diff --git a/Documentation/DocBook/media/dvb/dvbproperty.xml b/Documentation/DocBook/media/dvb/dvbproperty.xml
index ffee1fb..c7a4ca5 100644
--- a/Documentation/DocBook/media/dvb/dvbproperty.xml
+++ b/Documentation/DocBook/media/dvb/dvbproperty.xml
@@ -163,14 +163,16 @@
 	<section id="DTV-FREQUENCY">
 		<title><constant>DTV_FREQUENCY</constant></title>
 
-		<para>Central frequency of the channel, in HZ.</para>
+		<para>Central frequency of the channel.</para>
 
 		<para>Notes:</para>
-		<para>1)For ISDB-T, the channels are usually transmitted with an offset of 143kHz.
+		<para>1)For satellital delivery systems, it is measured in kHz.
+			For the other ones, it is measured in Hz.</para>
+		<para>2)For ISDB-T, the channels are usually transmitted with an offset of 143kHz.
 			E.g. a valid frequncy could be 474143 kHz. The stepping is bound to the bandwidth of
 			the channel which is 6MHz.</para>
 
-		<para>2)As in ISDB-Tsb the channel consists of only one or three segments the
+		<para>3)As in ISDB-Tsb the channel consists of only one or three segments the
 			frequency step is 429kHz, 3*429 respectively. As for ISDB-T the
 			central frequency of the channel is expected.</para>
 	</section>
@@ -735,14 +737,10 @@
 			<listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
 			<listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
 			<listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
-			<listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
 			<listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
 			<listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
-			<listitem><para><link linkend="DTV-CODE-RATE-HP"><constant>DTV_CODE_RATE_HP</constant></link></para></listitem>
-			<listitem><para><link linkend="DTV-CODE-RATE-LP"><constant>DTV_CODE_RATE_LP</constant></link></para></listitem>
 			<listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem>
 			<listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem>
-			<listitem><para><link linkend="DTV-HIERARCHY"><constant>DTV_HIERARCHY</constant></link></para></listitem>
 			<listitem><para><link linkend="DTV-ISDBT-LAYER-ENABLED"><constant>DTV_ISDBT_LAYER_ENABLED</constant></link></para></listitem>
 			<listitem><para><link linkend="DTV-ISDBT-PARTIAL-RECEPTION"><constant>DTV_ISDBT_PARTIAL_RECEPTION</constant></link></para></listitem>
 			<listitem><para><link linkend="DTV-ISDBT-SOUND-BROADCASTING"><constant>DTV_ISDBT_SOUND_BROADCASTING</constant></link></para></listitem>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-ext-ctrls.xml b/Documentation/DocBook/media/v4l/vidioc-g-ext-ctrls.xml
index 6f1f9a6..b17a7aa 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-ext-ctrls.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-ext-ctrls.xml
@@ -183,7 +183,12 @@
 	    <entry>__u32</entry>
 	    <entry><structfield>ctrl_class</structfield></entry>
 	    <entry>The control class to which all controls belong, see
-<xref linkend="ctrl-class" />.</entry>
+<xref linkend="ctrl-class" />. Drivers that use a kernel framework for handling
+controls will also accept a value of 0 here, meaning that the controls can
+belong to any control class. Whether drivers support this can be tested by setting
+<structfield>ctrl_class</structfield> to 0 and calling <constant>VIDIOC_TRY_EXT_CTRLS</constant>
+with a <structfield>count</structfield> of 0. If that succeeds, then the driver
+supports this feature.</entry>
 	  </row>
 	  <row>
 	    <entry>__u32</entry>
@@ -194,10 +199,13 @@
 	  <row>
 	    <entry>__u32</entry>
 	    <entry><structfield>error_idx</structfield></entry>
-	    <entry>Set by the driver in case of an error. It is the
-index of the control causing the error or equal to 'count' when the
-error is not associated with a particular control. Undefined when the
-ioctl returns 0 (success).</entry>
+	    <entry>Set by the driver in case of an error. If it is equal
+to <structfield>count</structfield>, then no actual changes were made to
+controls. In other words, the error was not associated with setting a particular
+control. If it is another value, then only the controls up to <structfield>error_idx-1</structfield>
+were modified and control <structfield>error_idx</structfield> is the one that
+caused the error. The <structfield>error_idx</structfield> value is undefined
+if the ioctl returned 0 (success).</entry>
 	  </row>
 	  <row>
 	    <entry>__u32</entry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-fbuf.xml b/Documentation/DocBook/media/v4l/vidioc-g-fbuf.xml
index 93817f3..7c63815 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-fbuf.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-fbuf.xml
@@ -364,15 +364,20 @@
 	  <row>
 	    <entry><constant>V4L2_FBUF_FLAG_OVERLAY</constant></entry>
 	    <entry>0x0002</entry>
-	    <entry>The frame buffer is an overlay surface the same
-size as the capture. [?]</entry>
-	  </row>
-	  <row>
-	    <entry spanname="hspan">The purpose of
-<constant>V4L2_FBUF_FLAG_OVERLAY</constant> was never quite clear.
-Most drivers seem to ignore this flag. For compatibility with the
-<wordasword>bttv</wordasword> driver applications should set the
-<constant>V4L2_FBUF_FLAG_OVERLAY</constant> flag.</entry>
+	    <entry>If this flag is set for a video capture device, then the
+driver will set the initial overlay size to cover the full framebuffer size,
+otherwise the existing overlay size (as set by &VIDIOC-S-FMT;) will be used.
+
+Only one video capture driver (bttv) supports this flag. The use of this flag
+for capture devices is deprecated. There is no way to detect which drivers
+support this flag, so the only reliable method of setting the overlay size is
+through &VIDIOC-S-FMT;.
+
+If this flag is set for a video output device, then the video output overlay
+window is relative to the top-left corner of the framebuffer and restricted
+to the size of the framebuffer. If it is cleared, then the video output
+overlay window is relative to the video output display.
+            </entry>
 	  </row>
 	  <row>
 	    <entry><constant>V4L2_FBUF_FLAG_CHROMAKEY</constant></entry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-frequency.xml b/Documentation/DocBook/media/v4l/vidioc-g-frequency.xml
index 1643181..66e9a52 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-frequency.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-frequency.xml
@@ -98,8 +98,11 @@
 	    <entry>&v4l2-tuner-type;</entry>
 	    <entry><structfield>type</structfield></entry>
 	    <entry>The tuner type. This is the same value as in the
-&v4l2-tuner; <structfield>type</structfield> field. The field is not
-applicable to modulators, &ie; ignored by drivers.</entry>
+&v4l2-tuner; <structfield>type</structfield> field. The type must be set
+to <constant>V4L2_TUNER_RADIO</constant> for <filename>/dev/radioX</filename>
+device nodes, and to <constant>V4L2_TUNER_ANALOG_TV</constant>
+for all others. The field is not applicable to modulators, &ie; ignored
+by drivers.</entry>
 	  </row>
 	  <row>
 	    <entry>__u32</entry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-input.xml b/Documentation/DocBook/media/v4l/vidioc-g-input.xml
index 08ae82f..1d43065 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-input.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-input.xml
@@ -61,8 +61,8 @@
 <constant>VIDIOC_S_INPUT</constant> ioctl with a pointer to this
 integer. Side effects are possible. For example inputs may support
 different video standards, so the driver may implicitly switch the
-current standard. It is good practice to select an input before
-querying or negotiating any other parameters.</para>
+current standard. Because of these possible side effects applications
+must select an input before querying or negotiating any other parameters.</para>
 
     <para>Information about video inputs is available using the
 &VIDIOC-ENUMINPUT; ioctl.</para>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-output.xml b/Documentation/DocBook/media/v4l/vidioc-g-output.xml
index fd45f1c..4533068 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-output.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-output.xml
@@ -61,8 +61,9 @@
 <constant>VIDIOC_S_OUTPUT</constant> ioctl with a pointer to this integer.
 Side effects are possible. For example outputs may support different
 video standards, so the driver may implicitly switch the current
-standard. It is good practice to select an output before querying or
-negotiating any other parameters.</para>
+standard.
+standard. Because of these possible side effects applications
+must select an output before querying or negotiating any other parameters.</para>
 
     <para>Information about video outputs is available using the
 &VIDIOC-ENUMOUTPUT; ioctl.</para>
diff --git a/Documentation/acpi/apei/einj.txt b/Documentation/acpi/apei/einj.txt
index 5cc699b..e7cc363 100644
--- a/Documentation/acpi/apei/einj.txt
+++ b/Documentation/acpi/apei/einj.txt
@@ -47,20 +47,53 @@
 
 - param1
   This file is used to set the first error parameter value. Effect of
-  parameter depends on error_type specified. For memory error, this is
-  physical memory address.  Only available if param_extension module
-  parameter is specified.
+  parameter depends on error_type specified.
 
 - param2
   This file is used to set the second error parameter value. Effect of
-  parameter depends on error_type specified. For memory error, this is
-  physical memory address mask.  Only available if param_extension
-  module parameter is specified.
+  parameter depends on error_type specified.
 
-Injecting parameter support is a BIOS version specific extension, that
-is, it only works on some BIOS version.  If you want to use it, please
-make sure your BIOS version has the proper support and specify
-"param_extension=y" in module parameter.
+BIOS versions based in the ACPI 4.0 specification have limited options
+to control where the errors are injected.  Your BIOS may support an
+extension (enabled with the param_extension=1 module parameter, or
+boot command line einj.param_extension=1). This allows the address
+and mask for memory injections to be specified by the param1 and
+param2 files in apei/einj.
+
+BIOS versions using the ACPI 5.0 specification have more control over
+the target of the injection. For processor related errors (type 0x1,
+0x2 and 0x4) the APICID of the target should be provided using the
+param1 file in apei/einj. For memory errors (type 0x8, 0x10 and 0x20)
+the address is set using param1 with a mask in param2 (0x0 is equivalent
+to all ones). For PCI express errors (type 0x40, 0x80 and 0x100) the
+segment, bus, device and function are specified using param1:
+
+         31     24 23    16 15    11 10      8  7        0
+	+-------------------------------------------------+
+	| segment |   bus  | device | function | reserved |
+	+-------------------------------------------------+
+
+An ACPI 5.0 BIOS may also allow vendor specific errors to be injected.
+In this case a file named vendor will contain identifying information
+from the BIOS that hopefully will allow an application wishing to use
+the vendor specific extension to tell that they are running on a BIOS
+that supports it. All vendor extensions have the 0x80000000 bit set in
+error_type. A file vendor_flags controls the interpretation of param1
+and param2 (1 = PROCESSOR, 2 = MEMORY, 4 = PCI). See your BIOS vendor
+documentation for details (and expect changes to this API if vendors
+creativity in using this feature expands beyond our expectations).
+
+Example:
+# cd /sys/kernel/debug/apei/einj
+# cat available_error_type		# See which errors can be injected
+0x00000002	Processor Uncorrectable non-fatal
+0x00000008	Memory Correctable
+0x00000010	Memory Uncorrectable non-fatal
+# echo 0x12345000 > param1		# Set memory address for injection
+# echo 0xfffffffffffff000 > param2	# Mask - anywhere in this page
+# echo 0x8 > error_type			# Choose correctable memory error
+# echo 1 > error_inject			# Inject now
+
 
 For more information about EINJ, please refer to ACPI specification
-version 4.0, section 17.5.
+version 4.0, section 17.5 and ACPI 5.0, section 18.6.
diff --git a/Documentation/coccinelle.txt b/Documentation/coccinelle.txt
index 96b6903..cf44eb6 100644
--- a/Documentation/coccinelle.txt
+++ b/Documentation/coccinelle.txt
@@ -102,9 +102,15 @@
 	make coccicheck COCCI=<my_SP.cocci> MODE=report
 
 
- Using Coccinelle on (modified) files
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ Controlling Which Files are Processed by Coccinelle
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+By default the entire kernel source tree is checked.
 
+To apply Coccinelle to a specific directory, M= can be used.
+For example, to check drivers/net/wireless/ one may write:
+
+    make coccicheck M=drivers/net/wireless/
+    
 To apply Coccinelle on a file basis, instead of a directory basis, the
 following command may be used:
 
diff --git a/Documentation/devices.txt b/Documentation/devices.txt
index cec8864..0038318 100644
--- a/Documentation/devices.txt
+++ b/Documentation/devices.txt
@@ -447,6 +447,9 @@
 		234 = /dev/btrfs-control	Btrfs control device
 		235 = /dev/autofs	Autofs control device
 		236 = /dev/mapper/control	Device-Mapper control device
+		237 = /dev/loop-control Loopback control device
+		238 = /dev/vhost-net	Host kernel accelerator for virtio net
+
 		240-254			Reserved for local use
 		255			Reserved for MISC_DYNAMIC_MINOR
 
diff --git a/Documentation/devicetree/bindings/dma/atmel-dma.txt b/Documentation/devicetree/bindings/dma/atmel-dma.txt
new file mode 100644
index 0000000..3c046ee
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/atmel-dma.txt
@@ -0,0 +1,14 @@
+* Atmel Direct Memory Access Controller (DMA)
+
+Required properties:
+- compatible: Should be "atmel,<chip>-dma"
+- reg: Should contain DMA registers location and length
+- interrupts: Should contain DMA interrupt
+
+Examples:
+
+dma@ffffec00 {
+	compatible = "atmel,at91sam9g45-dma";
+	reg = <0xffffec00 0x200>;
+	interrupts = <21>;
+};
diff --git a/Documentation/devicetree/bindings/i2c/omap-i2c.txt b/Documentation/devicetree/bindings/i2c/omap-i2c.txt
new file mode 100644
index 0000000..56564aa
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/omap-i2c.txt
@@ -0,0 +1,30 @@
+I2C for OMAP platforms
+
+Required properties :
+- compatible : Must be "ti,omap3-i2c" or "ti,omap4-i2c"
+- ti,hwmods : Must be "i2c<n>", n being the instance number (1-based)
+- #address-cells = <1>;
+- #size-cells = <0>;
+
+Recommended properties :
+- clock-frequency : Desired I2C bus clock frequency in Hz. Otherwise
+  the default 100 kHz frequency will be used.
+
+Optional properties:
+- Child nodes conforming to i2c bus binding
+
+Note: Current implementation will fetch base address, irq and dma
+from omap hwmod data base during device registration.
+Future plan is to migrate hwmod data base contents into device tree
+blob so that, all the required data will be used from device tree dts
+file.
+
+Examples :
+
+i2c1: i2c@0 {
+    compatible = "ti,omap3-i2c";
+    #address-cells = <1>;
+    #size-cells = <0>;
+    ti,hwmods = "i2c1";
+    clock-frequency = <400000>;
+};
diff --git a/Documentation/dmaengine.txt b/Documentation/dmaengine.txt
index 94b7e0f..bbe6cb3 100644
--- a/Documentation/dmaengine.txt
+++ b/Documentation/dmaengine.txt
@@ -75,6 +75,10 @@
    slave_sg	- DMA a list of scatter gather buffers from/to a peripheral
    dma_cyclic	- Perform a cyclic DMA operation from/to a peripheral till the
 		  operation is explicitly stopped.
+   interleaved_dma - This is common to Slave as well as M2M clients. For slave
+		 address of devices' fifo could be already known to the driver.
+		 Various types of operations could be expressed by setting
+		 appropriate values to the 'dma_interleaved_template' members.
 
    A non-NULL return of this transfer API represents a "descriptor" for
    the given transaction.
@@ -89,6 +93,10 @@
 		struct dma_chan *chan, dma_addr_t buf_addr, size_t buf_len,
 		size_t period_len, enum dma_data_direction direction);
 
+	struct dma_async_tx_descriptor *(*device_prep_interleaved_dma)(
+		struct dma_chan *chan, struct dma_interleaved_template *xt,
+		unsigned long flags);
+
    The peripheral driver is expected to have mapped the scatterlist for
    the DMA operation prior to calling device_prep_slave_sg, and must
    keep the scatterlist mapped until the DMA operation has completed.
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index d725c0d..1bea46a 100644
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -439,17 +439,6 @@
 
 ----------------------------
 
-What:	For VIDIOC_S_FREQUENCY the type field must match the device node's type.
-	If not, return -EINVAL.
-When:	3.2
-Why:	It makes no sense to switch the tuner to radio mode by calling
-	VIDIOC_S_FREQUENCY on a video node, or to switch the tuner to tv mode by
-	calling VIDIOC_S_FREQUENCY on a radio node. This is the first step of a
-	move to more consistent handling of tv and radio tuners.
-Who:	Hans Verkuil <hans.verkuil@cisco.com>
-
-----------------------------
-
 What:	Opening a radio device node will no longer automatically switch the
 	tuner mode from tv to radio.
 When:	3.3
diff --git a/Documentation/hwmon/it87 b/Documentation/hwmon/it87
index 6f496a5..23b7def 100644
--- a/Documentation/hwmon/it87
+++ b/Documentation/hwmon/it87
@@ -26,6 +26,10 @@
     Prefix: 'it8721'
     Addresses scanned: from Super I/O config space (8 I/O ports)
     Datasheet: Not publicly available
+  * IT8728F
+    Prefix: 'it8728'
+    Addresses scanned: from Super I/O config space (8 I/O ports)
+    Datasheet: Not publicly available
   * SiS950   [clone of IT8705F]
     Prefix: 'it87'
     Addresses scanned: from Super I/O config space (8 I/O ports)
@@ -71,7 +75,7 @@
 -----------
 
 This driver implements support for the IT8705F, IT8712F, IT8716F,
-IT8718F, IT8720F, IT8721F, IT8726F, IT8758E and SiS950 chips.
+IT8718F, IT8720F, IT8721F, IT8726F, IT8728F, IT8758E and SiS950 chips.
 
 These chips are 'Super I/O chips', supporting floppy disks, infrared ports,
 joysticks and other miscellaneous stuff. For hardware monitoring, they
@@ -105,6 +109,9 @@
 for AMD power sequencing. Therefore the chip will appear as IT8716F
 to userspace applications.
 
+The IT8728F is considered compatible with the IT8721F, until a datasheet
+becomes available (hopefully.)
+
 Temperatures are measured in degrees Celsius. An alarm is triggered once
 when the Overtemperature Shutdown limit is crossed.
 
@@ -121,8 +128,8 @@
 maximum limit. Note that minimum in this case always means 'closest to
 zero'; this is important for negative voltage measurements. All voltage
 inputs can measure voltages between 0 and 4.08 volts, with a resolution of
-0.016 volt (except IT8721F/IT8758E: 0.012 volt.) The battery voltage in8 does
-not have limit registers.
+0.016 volt (except IT8721F/IT8758E and IT8728F: 0.012 volt.) The battery
+voltage in8 does not have limit registers.
 
 On the IT8721F/IT8758E, some voltage inputs are internal and scaled inside
 the chip (in7, in8 and optionally in3). The driver handles this transparently
diff --git a/Documentation/hwmon/lm63 b/Documentation/hwmon/lm63
index b9843ea..4d30d20 100644
--- a/Documentation/hwmon/lm63
+++ b/Documentation/hwmon/lm63
@@ -12,6 +12,11 @@
     Addresses scanned: I2C 0x18 and 0x4e
     Datasheet: Publicly available at the National Semiconductor website
                http://www.national.com/pf/LM/LM64.html
+  * National Semiconductor LM96163
+    Prefix: 'lm96163'
+    Addresses scanned: I2C 0x4c
+    Datasheet: Publicly available at the National Semiconductor website
+               http://www.national.com/pf/LM/LM96163.html
 
 Author: Jean Delvare <khali@linux-fr.org>
 
@@ -49,16 +54,24 @@
 Note that the pin used for fan monitoring is shared with an alert out
 function. Depending on how the board designer wanted to use the chip, fan
 speed monitoring will or will not be possible. The proper chip configuration
-is left to the BIOS, and the driver will blindly trust it.
+is left to the BIOS, and the driver will blindly trust it. Only the original
+LM63 suffers from this limitation, the LM64 and LM96163 have separate pins
+for fan monitoring and alert out. On the LM64, monitoring is always enabled;
+on the LM96163 it can be disabled.
 
 A PWM output can be used to control the speed of the fan. The LM63 has two
 PWM modes: manual and automatic. Automatic mode is not fully implemented yet
 (you cannot define your custom PWM/temperature curve), and mode change isn't
 supported either.
 
-The lm63 driver will not update its values more frequently than every
-second; reading them more often will do no harm, but will return 'old'
-values.
+The lm63 driver will not update its values more frequently than configured with
+the update_interval sysfs attribute; reading them more often will do no harm,
+but will return 'old' values. Values in the automatic fan control lookup table
+(attributes pwm1_auto_*) have their own independent lifetime of 5 seconds.
 
 The LM64 is effectively an LM63 with GPIO lines. The driver does not
 support these GPIO lines at present.
+
+The LM96163 is an enhanced version of LM63 with improved temperature accuracy
+and better PWM resolution. For LM96163, the external temperature sensor type is
+configurable as CPU embedded diode(1) or 3904 transistor(2).
diff --git a/Documentation/hwmon/sysfs-interface b/Documentation/hwmon/sysfs-interface
index a4aa8f6..1f4dd85 100644
--- a/Documentation/hwmon/sysfs-interface
+++ b/Documentation/hwmon/sysfs-interface
@@ -304,7 +304,7 @@
 temp[1-*]_type	Sensor type selection.
 		Integers 1 to 6
 		RW
-		1: PII/Celeron Diode
+		1: CPU embedded diode
 		2: 3904 transistor
 		3: thermal diode
 		4: thermistor
diff --git a/Documentation/ioctl/ioctl-number.txt b/Documentation/ioctl/ioctl-number.txt
index 54078ed..4840334 100644
--- a/Documentation/ioctl/ioctl-number.txt
+++ b/Documentation/ioctl/ioctl-number.txt
@@ -149,6 +149,7 @@
 'M'	01-03	drivers/scsi/megaraid/megaraid_sas.h
 'M'	00-0F	drivers/video/fsl-diu-fb.h	conflict!
 'N'	00-1F	drivers/usb/scanner.h
+'N'	40-7F	drivers/block/nvme.c
 'O'     00-06   mtd/ubi-user.h		UBI
 'P'	all	linux/soundcard.h	conflict!
 'P'	60-6F	sound/sscape_ioctl.h	conflict!
diff --git a/Documentation/kbuild/makefiles.txt b/Documentation/kbuild/makefiles.txt
index f47cdef..ab0a984 100644
--- a/Documentation/kbuild/makefiles.txt
+++ b/Documentation/kbuild/makefiles.txt
@@ -33,14 +33,15 @@
 
 	=== 6 Architecture Makefiles
 	   --- 6.1 Set variables to tweak the build to the architecture
-	   --- 6.2 Add prerequisites to archprepare:
-	   --- 6.3 List directories to visit when descending
-	   --- 6.4 Architecture-specific boot images
-	   --- 6.5 Building non-kbuild targets
-	   --- 6.6 Commands useful for building a boot image
-	   --- 6.7 Custom kbuild commands
-	   --- 6.8 Preprocessing linker scripts
-	   --- 6.9 Generic header files
+	   --- 6.2 Add prerequisites to archheaders:
+	   --- 6.3 Add prerequisites to archprepare:
+	   --- 6.4 List directories to visit when descending
+	   --- 6.5 Architecture-specific boot images
+	   --- 6.6 Building non-kbuild targets
+	   --- 6.7 Commands useful for building a boot image
+	   --- 6.8 Custom kbuild commands
+	   --- 6.9 Preprocessing linker scripts
+	   --- 6.10 Generic header files
 
 	=== 7 Kbuild syntax for exported headers
 		--- 7.1 header-y
@@ -252,7 +253,7 @@
 	This will create a library lib.a based on delay.o. For kbuild to
 	actually recognize that there is a lib.a being built, the directory
 	shall be listed in libs-y.
-	See also "6.3 List directories to visit when descending".
+	See also "6.4 List directories to visit when descending".
 
 	Use of lib-y is normally restricted to lib/ and arch/*/lib.
 
@@ -974,7 +975,20 @@
 	$(KBUILD_ARFLAGS) set by the top level Makefile to "D" (deterministic
 	mode) if this option is supported by $(AR).
 
---- 6.2 Add prerequisites to archprepare:
+--- 6.2 Add prerequisites to archheaders:
+
+	The archheaders: rule is used to generate header files that
+	may be installed into user space by "make header_install" or
+	"make headers_install_all".  In order to support
+	"make headers_install_all", this target has to be able to run
+	on an unconfigured tree, or a tree configured for another
+	architecture.
+
+	It is run before "make archprepare" when run on the
+	architecture itself.
+
+
+--- 6.3 Add prerequisites to archprepare:
 
 	The archprepare: rule is used to list prerequisites that need to be
 	built before starting to descend down in the subdirectories.
@@ -990,7 +1004,7 @@
 	generating offset header files.
 
 
---- 6.3 List directories to visit when descending
+--- 6.4 List directories to visit when descending
 
 	An arch Makefile cooperates with the top Makefile to define variables
 	which specify how to build the vmlinux file.  Note that there is no
@@ -1019,7 +1033,7 @@
 		drivers-$(CONFIG_OPROFILE)  += arch/sparc64/oprofile/
 
 
---- 6.4 Architecture-specific boot images
+--- 6.5 Architecture-specific boot images
 
 	An arch Makefile specifies goals that take the vmlinux file, compress
 	it, wrap it in bootstrapping code, and copy the resulting files
@@ -1070,7 +1084,7 @@
 
 	When "make" is executed without arguments, bzImage will be built.
 
---- 6.5 Building non-kbuild targets
+--- 6.6 Building non-kbuild targets
 
     extra-y
 
@@ -1090,7 +1104,7 @@
 	shall be built, but shall not be linked as part of built-in.o.
 
 
---- 6.6 Commands useful for building a boot image
+--- 6.7 Commands useful for building a boot image
 
 	Kbuild provides a few macros that are useful when building a
 	boot image.
@@ -1112,7 +1126,7 @@
 	always be built.
 	Assignments to $(targets) are without $(obj)/ prefix.
 	if_changed may be used in conjunction with custom commands as
-	defined in 6.7 "Custom kbuild commands".
+	defined in 6.8 "Custom kbuild commands".
 
 	Note: It is a typical mistake to forget the FORCE prerequisite.
 	Another common pitfall is that whitespace is sometimes
@@ -1171,7 +1185,7 @@
 		$(obj)/%.dtb: $(src)/%.dts
 			$(call cmd,dtc)
 
---- 6.7 Custom kbuild commands
+--- 6.8 Custom kbuild commands
 
 	When kbuild is executing with KBUILD_VERBOSE=0, then only a shorthand
 	of a command is normally displayed.
@@ -1198,7 +1212,7 @@
 	will be displayed with "make KBUILD_VERBOSE=0".
 
 
---- 6.8 Preprocessing linker scripts
+--- 6.9 Preprocessing linker scripts
 
 	When the vmlinux image is built, the linker script
 	arch/$(ARCH)/kernel/vmlinux.lds is used.
@@ -1228,7 +1242,7 @@
 	The kbuild infrastructure for *lds file are used in several
 	architecture-specific files.
 
---- 6.9 Generic header files
+--- 6.10 Generic header files
 
 	The directory include/asm-generic contains the header files
 	that may be shared between individual architectures.
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index b29f3c4..033d4e6 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1059,6 +1059,11 @@
 			By default, super page will be supported if Intel IOMMU
 			has the capability. With this option, super page will
 			not be supported.
+
+	intel_idle.max_cstate=	[KNL,HW,ACPI,X86]
+			0	disables intel_idle and fall back on acpi_idle.
+			1 to 6	specify maximum depth of C-state.
+
 	intremap=	[X86-64, Intel-IOMMU]
 			on	enable Interrupt Remapping (default)
 			off	disable Interrupt Remapping
diff --git a/Documentation/scsi/ChangeLog.megaraid_sas b/Documentation/scsi/ChangeLog.megaraid_sas
index 64adb98..57566ba 100644
--- a/Documentation/scsi/ChangeLog.megaraid_sas
+++ b/Documentation/scsi/ChangeLog.megaraid_sas
@@ -1,3 +1,13 @@
+Release Date    : Fri. Jan 6, 2012 17:00:00 PST 2010 -
+			(emaild-id:megaraidlinux@lsi.com)
+			Adam Radford
+Current Version : 00.00.06.14-rc1
+Old Version     : 00.00.06.12-rc1
+    1. Fix reglockFlags for degraded raid5/6 for MR 9360/9380.
+    2. Mask off flags in ioctl path to prevent memory scribble with older
+       MegaCLI versions.
+    3. Remove poll_mode_io module paramater, sysfs node, and associated code.
+-------------------------------------------------------------------------------
 Release Date    : Wed. Oct 5, 2011 17:00:00 PST 2010 -
 			(emaild-id:megaraidlinux@lsi.com)
 			Adam Radford
diff --git a/Documentation/scsi/LICENSE.qla4xxx b/Documentation/scsi/LICENSE.qla4xxx
index 494980e..ab89959 100644
--- a/Documentation/scsi/LICENSE.qla4xxx
+++ b/Documentation/scsi/LICENSE.qla4xxx
@@ -1,32 +1,11 @@
 Copyright (c) 2003-2011 QLogic Corporation
-QLogic Linux iSCSI HBA Driver
+QLogic Linux iSCSI Driver
 
 This program includes a device driver for Linux 3.x.
 You may modify and redistribute the device driver code under the
 GNU General Public License (a copy of which is attached hereto as
 Exhibit A) published by the Free Software Foundation (version 2).
 
-REGARDLESS OF WHAT LICENSING MECHANISM IS USED OR APPLICABLE,
-THIS PROGRAM IS PROVIDED BY QLOGIC CORPORATION "AS IS'' AND ANY
-EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
-PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR
-BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
-TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
-ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGE.
-
-USER ACKNOWLEDGES AND AGREES THAT USE OF THIS PROGRAM WILL NOT
-CREATE OR GIVE GROUNDS FOR A LICENSE BY IMPLICATION, ESTOPPEL, OR
-OTHERWISE IN ANY INTELLECTUAL PROPERTY RIGHTS (PATENT, COPYRIGHT,
-TRADE SECRET, MASK WORK, OR OTHER PROPRIETARY RIGHT) EMBODIED IN
-ANY OTHER QLOGIC HARDWARE OR SOFTWARE EITHER SOLELY OR IN
-COMBINATION WITH THIS PROGRAM.
-
 
 EXHIBIT A
 
diff --git a/Documentation/target/tcm_mod_builder.py b/Documentation/target/tcm_mod_builder.py
index 7ef9b84..6e21b8b 100755
--- a/Documentation/target/tcm_mod_builder.py
+++ b/Documentation/target/tcm_mod_builder.py
@@ -230,14 +230,9 @@
 	buf += "#include <linux/ctype.h>\n"
 	buf += "#include <asm/unaligned.h>\n\n"
 	buf += "#include <target/target_core_base.h>\n"
-	buf += "#include <target/target_core_transport.h>\n"
-	buf += "#include <target/target_core_fabric_ops.h>\n"
+	buf += "#include <target/target_core_fabric.h>\n"
 	buf += "#include <target/target_core_fabric_configfs.h>\n"
-	buf += "#include <target/target_core_fabric_lib.h>\n"
-	buf += "#include <target/target_core_device.h>\n"
-	buf += "#include <target/target_core_tpg.h>\n"
 	buf += "#include <target/target_core_configfs.h>\n"
-	buf += "#include <target/target_core_base.h>\n"
 	buf += "#include <target/configfs_macros.h>\n\n"
 	buf += "#include \"" + fabric_mod_name + "_base.h\"\n"
 	buf += "#include \"" + fabric_mod_name + "_fabric.h\"\n\n"
@@ -260,7 +255,7 @@
 	buf += "	/* " + fabric_mod_name + "_parse_wwn(name, &wwpn, 1) < 0)\n"
 	buf += "		return ERR_PTR(-EINVAL); */\n"
 	buf += "	se_nacl_new = " + fabric_mod_name + "_alloc_fabric_acl(se_tpg);\n"
-	buf += "	if (!(se_nacl_new))\n"
+	buf += "	if (!se_nacl_new)\n"
 	buf += "		return ERR_PTR(-ENOMEM);\n"
 	buf += "//#warning FIXME: Hardcoded nexus depth in " + fabric_mod_name + "_make_nodeacl()\n"
 	buf += "	nexus_depth = 1;\n"
@@ -308,7 +303,7 @@
 	buf += "	if (strict_strtoul(name + 5, 10, &tpgt) || tpgt > UINT_MAX)\n"
 	buf += "		return ERR_PTR(-EINVAL);\n\n"
 	buf += "	tpg = kzalloc(sizeof(struct " + fabric_mod_name + "_tpg), GFP_KERNEL);\n"
-	buf += "	if (!(tpg)) {\n"
+	buf += "	if (!tpg) {\n"
 	buf += "		printk(KERN_ERR \"Unable to allocate struct " + fabric_mod_name + "_tpg\");\n"
 	buf += "		return ERR_PTR(-ENOMEM);\n"
 	buf += "	}\n"
@@ -344,7 +339,7 @@
 	buf += "	/* if (" + fabric_mod_name + "_parse_wwn(name, &wwpn, 1) < 0)\n"
 	buf += "		return ERR_PTR(-EINVAL); */\n\n"
 	buf += "	" + fabric_mod_port + " = kzalloc(sizeof(struct " + fabric_mod_name + "_" + fabric_mod_port + "), GFP_KERNEL);\n"
-	buf += "	if (!(" + fabric_mod_port + ")) {\n"
+	buf += "	if (!" + fabric_mod_port + ") {\n"
 	buf += "		printk(KERN_ERR \"Unable to allocate struct " + fabric_mod_name + "_" + fabric_mod_port + "\");\n"
 	buf += "		return ERR_PTR(-ENOMEM);\n"
 	buf += "	}\n"
@@ -352,7 +347,7 @@
 	if proto_ident == "FC" or proto_ident == "SAS":
 		buf += "	" + fabric_mod_port + "->" + fabric_mod_port + "_wwpn = wwpn;\n"
 
-	buf += "	/* " + fabric_mod_name + "_format_wwn(&" + fabric_mod_port + "->" + fabric_mod_port + "_name[0], " + fabric_mod_name.upper() + "__NAMELEN, wwpn); */\n\n"
+	buf += "	/* " + fabric_mod_name + "_format_wwn(&" + fabric_mod_port + "->" + fabric_mod_port + "_name[0], " + fabric_mod_name.upper() + "_NAMELEN, wwpn); */\n\n"
 	buf += "	return &" + fabric_mod_port + "->" + fabric_mod_port + "_wwn;\n"
 	buf += "}\n\n"
 	buf += "static void " + fabric_mod_name + "_drop_" + fabric_mod_port + "(struct se_wwn *wwn)\n"
@@ -391,8 +386,7 @@
 	buf += "	.tpg_alloc_fabric_acl		= " + fabric_mod_name + "_alloc_fabric_acl,\n"
 	buf += "	.tpg_release_fabric_acl		= " + fabric_mod_name + "_release_fabric_acl,\n"
 	buf += "	.tpg_get_inst_index		= " + fabric_mod_name + "_tpg_get_inst_index,\n"
-	buf += "	.release_cmd_to_pool		= " + fabric_mod_name + "_release_cmd,\n"
-	buf += "	.release_cmd_direct		= " + fabric_mod_name + "_release_cmd,\n"
+	buf += "	.release_cmd			= " + fabric_mod_name + "_release_cmd,\n"
 	buf += "	.shutdown_session		= " + fabric_mod_name + "_shutdown_session,\n"
 	buf += "	.close_session			= " + fabric_mod_name + "_close_session,\n"
 	buf += "	.stop_session			= " + fabric_mod_name + "_stop_session,\n"
@@ -405,14 +399,12 @@
 	buf += "	.set_default_node_attributes	= " + fabric_mod_name + "_set_default_node_attrs,\n"
 	buf += "	.get_task_tag			= " + fabric_mod_name + "_get_task_tag,\n"
 	buf += "	.get_cmd_state			= " + fabric_mod_name + "_get_cmd_state,\n"
-	buf += "	.new_cmd_failure		= " + fabric_mod_name + "_new_cmd_failure,\n"
 	buf += "	.queue_data_in			= " + fabric_mod_name + "_queue_data_in,\n"
 	buf += "	.queue_status			= " + fabric_mod_name + "_queue_status,\n"
 	buf += "	.queue_tm_rsp			= " + fabric_mod_name + "_queue_tm_rsp,\n"
 	buf += "	.get_fabric_sense_len		= " + fabric_mod_name + "_get_fabric_sense_len,\n"
 	buf += "	.set_fabric_sense_len		= " + fabric_mod_name + "_set_fabric_sense_len,\n"
 	buf += "	.is_state_remove		= " + fabric_mod_name + "_is_state_remove,\n"
-	buf += "	.pack_lun			= " + fabric_mod_name + "_pack_lun,\n"
 	buf += "	/*\n"
 	buf += "	 * Setup function pointers for generic logic in target_core_fabric_configfs.c\n"
 	buf += "	 */\n"
@@ -439,9 +431,9 @@
 	buf += "	 * Register the top level struct config_item_type with TCM core\n"
 	buf += "	 */\n"
 	buf += "	fabric = target_fabric_configfs_init(THIS_MODULE, \"" + fabric_mod_name[4:] + "\");\n"
-	buf += "	if (!(fabric)) {\n"
+	buf += "	if (IS_ERR(fabric)) {\n"
 	buf += "		printk(KERN_ERR \"target_fabric_configfs_init() failed\\n\");\n"
-	buf += "		return -ENOMEM;\n"
+	buf += "		return PTR_ERR(fabric);\n"
 	buf += "	}\n"
 	buf += "	/*\n"
 	buf += "	 * Setup fabric->tf_ops from our local " + fabric_mod_name + "_ops\n"
@@ -475,9 +467,9 @@
 	buf += "	printk(KERN_INFO \"" +  fabric_mod_name.upper() + "[0] - Set fabric -> " + fabric_mod_name + "_fabric_configfs\\n\");\n"
 	buf += "	return 0;\n"
 	buf += "};\n\n"
-	buf += "static void " + fabric_mod_name + "_deregister_configfs(void)\n"
+	buf += "static void __exit " + fabric_mod_name + "_deregister_configfs(void)\n"
 	buf += "{\n"
-	buf += "	if (!(" + fabric_mod_name + "_fabric_configfs))\n"
+	buf += "	if (!" + fabric_mod_name + "_fabric_configfs)\n"
 	buf += "		return;\n\n"
 	buf += "	target_fabric_configfs_deregister(" + fabric_mod_name + "_fabric_configfs);\n"
 	buf += "	" + fabric_mod_name + "_fabric_configfs = NULL;\n"
@@ -492,17 +484,15 @@
 	buf += "		return ret;\n\n"
 	buf += "	return 0;\n"
 	buf += "};\n\n"
-	buf += "static void " + fabric_mod_name + "_exit(void)\n"
+	buf += "static void __exit " + fabric_mod_name + "_exit(void)\n"
 	buf += "{\n"
 	buf += "	" + fabric_mod_name + "_deregister_configfs();\n"
 	buf += "};\n\n"
 
-	buf += "#ifdef MODULE\n"
 	buf += "MODULE_DESCRIPTION(\"" + fabric_mod_name.upper() + " series fabric driver\");\n"
 	buf += "MODULE_LICENSE(\"GPL\");\n"
 	buf += "module_init(" + fabric_mod_name + "_init);\n"
 	buf += "module_exit(" + fabric_mod_name + "_exit);\n"
-	buf += "#endif\n"
 
 	ret = p.write(buf)
 	if ret:
@@ -514,7 +504,7 @@
 
 def tcm_mod_scan_fabric_ops(tcm_dir):
 
-	fabric_ops_api = tcm_dir + "include/target/target_core_fabric_ops.h"
+	fabric_ops_api = tcm_dir + "include/target/target_core_fabric.h"
 
 	print "Using tcm_mod_scan_fabric_ops: " + fabric_ops_api
 	process_fo = 0;
@@ -579,11 +569,7 @@
 	buf += "#include <scsi/scsi_cmnd.h>\n"
 	buf += "#include <scsi/libfc.h>\n\n"
 	buf += "#include <target/target_core_base.h>\n"
-	buf += "#include <target/target_core_transport.h>\n"
-	buf += "#include <target/target_core_fabric_ops.h>\n"
-	buf += "#include <target/target_core_fabric_lib.h>\n"
-	buf += "#include <target/target_core_device.h>\n"
-	buf += "#include <target/target_core_tpg.h>\n"
+	buf += "#include <target/target_core_fabric.h>\n"
 	buf += "#include <target/target_core_configfs.h>\n\n"
 	buf += "#include \"" + fabric_mod_name + "_base.h\"\n"
 	buf += "#include \"" + fabric_mod_name + "_fabric.h\"\n\n"
@@ -788,7 +774,7 @@
 			buf += "{\n"
 			buf += "	struct " + fabric_mod_name + "_nacl *nacl;\n\n"
 			buf += "	nacl = kzalloc(sizeof(struct " + fabric_mod_name + "_nacl), GFP_KERNEL);\n"
-			buf += "	if (!(nacl)) {\n"
+			buf += "	if (!nacl) {\n"
 			buf += "		printk(KERN_ERR \"Unable to alocate struct " + fabric_mod_name + "_nacl\\n\");\n"
 			buf += "		return NULL;\n"
 			buf += "	}\n\n"
@@ -815,7 +801,7 @@
 			buf += "}\n\n"
 			bufi += "u32 " + fabric_mod_name + "_tpg_get_inst_index(struct se_portal_group *);\n"
 
-		if re.search('release_cmd_to_pool', fo):
+		if re.search('\*release_cmd\)\(', fo):
 			buf += "void " + fabric_mod_name + "_release_cmd(struct se_cmd *se_cmd)\n"
 			buf += "{\n"
 			buf += "	return;\n"
@@ -899,13 +885,6 @@
 			buf += "}\n\n"
 			bufi += "int " + fabric_mod_name + "_get_cmd_state(struct se_cmd *);\n"
 
-		if re.search('new_cmd_failure\)\(', fo):
-			buf += "void " + fabric_mod_name + "_new_cmd_failure(struct se_cmd *se_cmd)\n"
-			buf += "{\n"
-			buf += "	return;\n"
-			buf += "}\n\n"
-			bufi += "void " + fabric_mod_name + "_new_cmd_failure(struct se_cmd *);\n"
-
 		if re.search('queue_data_in\)\(', fo):
 			buf += "int " + fabric_mod_name + "_queue_data_in(struct se_cmd *se_cmd)\n"
 			buf += "{\n"
@@ -948,15 +927,6 @@
 			buf += "}\n\n"
 			bufi += "int " + fabric_mod_name + "_is_state_remove(struct se_cmd *);\n"
 
-		if re.search('pack_lun\)\(', fo):
-			buf += "u64 " + fabric_mod_name + "_pack_lun(unsigned int lun)\n"
-			buf += "{\n"
-			buf += "	WARN_ON(lun >= 256);\n"
-			buf += "	/* Caller wants this byte-swapped */\n"
-			buf += "	return cpu_to_le64((lun & 0xff) << 8);\n"
-			buf += "}\n\n"
-			bufi += "u64 " + fabric_mod_name + "_pack_lun(unsigned int);\n"
-
 
 	ret = p.write(buf)
 	if ret:
diff --git a/Documentation/video4linux/v4l2-controls.txt b/Documentation/video4linux/v4l2-controls.txt
index 26aa057..e2492a9 100644
--- a/Documentation/video4linux/v4l2-controls.txt
+++ b/Documentation/video4linux/v4l2-controls.txt
@@ -666,27 +666,6 @@
 class is added.
 
 
-Differences from the Spec
-=========================
-
-There are a few places where the framework acts slightly differently from the
-V4L2 Specification. Those differences are described in this section. We will
-have to see whether we need to adjust the spec or not.
-
-1) It is no longer required to have all controls contained in a
-v4l2_ext_control array be from the same control class. The framework will be
-able to handle any type of control in the array. You need to set ctrl_class
-to 0 in order to enable this. If ctrl_class is non-zero, then it will still
-check that all controls belong to that control class.
-
-If you set ctrl_class to 0 and count to 0, then it will only return an error
-if there are no controls at all.
-
-2) Clarified the way error_idx works. For get and set it will be equal to
-count if nothing was done yet. If it is less than count then only the controls
-up to error_idx-1 were successfully applied.
-
-
 Proposals for Extensions
 ========================
 
diff --git a/MAINTAINERS b/MAINTAINERS
index 2a90101..89b70df 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -745,6 +745,7 @@
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
 F:	arch/arm/mach-prima2/
+F:	drivers/dma/sirf-dma*
 
 ARM/EBSA110 MACHINE SUPPORT
 M:	Russell King <linux@arm.linux.org.uk>
@@ -1411,6 +1412,7 @@
 B43 WIRELESS DRIVER
 M:	Stefano Brivio <stefano.brivio@polimi.it>
 L:	linux-wireless@vger.kernel.org
+L:	b43-dev@lists.infradead.org (moderated for non-subscribers)
 W:	http://linuxwireless.org/en/users/Drivers/b43
 S:	Maintained
 F:	drivers/net/wireless/b43/
@@ -1587,6 +1589,13 @@
 S:	Supported
 F:	drivers/scsi/bnx2fc/
 
+BROADCOM SPECIFIC AMBA DRIVER (BCMA)
+M:	Rafał Miłecki <zajec5@gmail.com>
+L:	linux-wireless@vger.kernel.org
+S:	Maintained
+F:	drivers/bcma/
+F:	include/linux/bcma/
+
 BROCADE BFA FC SCSI DRIVER
 M:	Jing Huang <huangj@brocade.com>
 L:	linux-scsi@vger.kernel.org
@@ -5846,7 +5855,7 @@
 SECURITY SUBSYSTEM
 M:	James Morris <jmorris@namei.org>
 L:	linux-security-module@vger.kernel.org (suggested Cc:)
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6.git
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security.git
 W:	http://security.wiki.kernel.org/
 S:	Supported
 F:	security/
@@ -6116,13 +6125,6 @@
 F:	drivers/ssb/
 F:	include/linux/ssb/
 
-BROADCOM SPECIFIC AMBA DRIVER (BCMA)
-M:	Rafał Miłecki <zajec5@gmail.com>
-L:	linux-wireless@vger.kernel.org
-S:	Maintained
-F:	drivers/bcma/
-F:	include/linux/bcma/
-
 SONY VAIO CONTROL DEVICE DRIVER
 M:	Mattia Dongili <malattia@linux.it>
 L:	platform-driver-x86@vger.kernel.org
@@ -7198,7 +7200,7 @@
 F:	drivers/net/vmxnet3/
 
 VMware PVSCSI driver
-M:	Alok Kataria <akataria@vmware.com>
+M:	Arvind Kumar <arvindkumar@vmware.com>
 M:	VMware PV-Drivers <pv-drivers@vmware.com>
 L:	linux-scsi@vger.kernel.org
 S:	Maintained
diff --git a/Makefile b/Makefile
index adddd11..156ac69 100644
--- a/Makefile
+++ b/Makefile
@@ -312,7 +312,7 @@
 # If the user is running make -s (silent mode), suppress echoing of
 # commands
 
-ifneq ($(findstring s,$(MAKEFLAGS)),)
+ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
   quiet=silent_
 endif
 
@@ -442,7 +442,7 @@
 
 no-dot-config-targets := clean mrproper distclean \
 			 cscope gtags TAGS tags help %docs check% coccicheck \
-			 include/linux/version.h headers_% \
+			 include/linux/version.h headers_% archheaders \
 			 kernelversion %src-pkg
 
 config-targets := 0
@@ -979,7 +979,7 @@
                    include/config/auto.conf
 	$(cmd_crmodverdir)
 
-archprepare: prepare1 scripts_basic
+archprepare: archheaders prepare1 scripts_basic
 
 prepare0: archprepare FORCE
 	$(Q)$(MAKE) $(build)=.
@@ -1046,8 +1046,11 @@
 # If we do an all arch process set dst to asm-$(hdr-arch)
 hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm)
 
+PHONY += archheaders
+archheaders:
+
 PHONY += __headers
-__headers: include/linux/version.h scripts_basic asm-generic FORCE
+__headers: include/linux/version.h scripts_basic asm-generic archheaders FORCE
 	$(Q)$(MAKE) $(build)=scripts build_unifdef
 
 PHONY += headers_install_all
diff --git a/arch/arm/boot/Makefile b/arch/arm/boot/Makefile
index 5df26a9..fc871e7 100644
--- a/arch/arm/boot/Makefile
+++ b/arch/arm/boot/Makefile
@@ -59,9 +59,11 @@
 
 endif
 
+targets += $(dtb-y)
+
 # Rule to build device tree blobs
-$(obj)/%.dtb: $(src)/dts/%.dts
-	$(call cmd,dtc)
+$(obj)/%.dtb: $(src)/dts/%.dts FORCE
+	$(call if_changed_dep,dtc)
 
 $(obj)/dtbs: $(addprefix $(obj)/, $(dtb-y))
 
diff --git a/arch/arm/include/asm/gpio.h b/arch/arm/include/asm/gpio.h
index 7151753..c402e9b 100644
--- a/arch/arm/include/asm/gpio.h
+++ b/arch/arm/include/asm/gpio.h
@@ -2,7 +2,7 @@
 #define _ARCH_ARM_GPIO_H
 
 #if CONFIG_ARCH_NR_GPIO > 0
-#define ARCH_NR_GPIO CONFIG_ARCH_NR_GPIO
+#define ARCH_NR_GPIOS CONFIG_ARCH_NR_GPIO
 #endif
 
 /* not all ARM platforms necessarily support this API ... */
diff --git a/arch/arm/include/asm/kprobes.h b/arch/arm/include/asm/kprobes.h
index feec867..f82ec22 100644
--- a/arch/arm/include/asm/kprobes.h
+++ b/arch/arm/include/asm/kprobes.h
@@ -24,7 +24,6 @@
 #define MAX_INSN_SIZE			2
 #define MAX_STACK_SIZE			64	/* 32 would probably be OK */
 
-#define regs_return_value(regs)		((regs)->ARM_r0)
 #define flush_insn_slot(p)		do { } while (0)
 #define kretprobe_blacklist_size	0
 
diff --git a/arch/arm/include/asm/memblock.h b/arch/arm/include/asm/memblock.h
index b8da2e4..00ca5f9 100644
--- a/arch/arm/include/asm/memblock.h
+++ b/arch/arm/include/asm/memblock.h
@@ -6,4 +6,6 @@
 
 extern void arm_memblock_init(struct meminfo *, struct machine_desc *);
 
+phys_addr_t arm_memblock_steal(phys_addr_t size, phys_addr_t align);
+
 #endif
diff --git a/arch/arm/include/asm/ptrace.h b/arch/arm/include/asm/ptrace.h
index 96187ff..451808b 100644
--- a/arch/arm/include/asm/ptrace.h
+++ b/arch/arm/include/asm/ptrace.h
@@ -189,6 +189,11 @@
 	return 0;
 }
 
+static inline long regs_return_value(struct pt_regs *regs)
+{
+	return regs->ARM_r0;
+}
+
 #define instruction_pointer(regs)	(regs)->ARM_pc
 
 #ifdef CONFIG_SMP
diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h
index 0f30c3a..d4c24d4 100644
--- a/arch/arm/include/asm/thread_info.h
+++ b/arch/arm/include/asm/thread_info.h
@@ -129,6 +129,7 @@
 /*
  * thread information flags:
  *  TIF_SYSCALL_TRACE	- syscall trace active
+ *  TIF_SYSCAL_AUDIT	- syscall auditing active
  *  TIF_SIGPENDING	- signal pending
  *  TIF_NEED_RESCHED	- rescheduling necessary
  *  TIF_NOTIFY_RESUME	- callback before returning to user
@@ -139,6 +140,7 @@
 #define TIF_NEED_RESCHED	1
 #define TIF_NOTIFY_RESUME	2	/* callback before returning to user */
 #define TIF_SYSCALL_TRACE	8
+#define TIF_SYSCALL_AUDIT	9
 #define TIF_POLLING_NRFLAG	16
 #define TIF_USING_IWMMXT	17
 #define TIF_MEMDIE		18	/* is terminating due to OOM killer */
@@ -149,11 +151,15 @@
 #define _TIF_NEED_RESCHED	(1 << TIF_NEED_RESCHED)
 #define _TIF_NOTIFY_RESUME	(1 << TIF_NOTIFY_RESUME)
 #define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)
+#define _TIF_SYSCALL_AUDIT	(1 << TIF_SYSCALL_AUDIT)
 #define _TIF_POLLING_NRFLAG	(1 << TIF_POLLING_NRFLAG)
 #define _TIF_USING_IWMMXT	(1 << TIF_USING_IWMMXT)
 #define _TIF_RESTORE_SIGMASK	(1 << TIF_RESTORE_SIGMASK)
 #define _TIF_SECCOMP		(1 << TIF_SECCOMP)
 
+/* Checks for any syscall work in entry-common.S */
+#define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT)
+
 /*
  * Change these and you break ASM code in entry-common.S
  */
diff --git a/arch/arm/include/asm/unified.h b/arch/arm/include/asm/unified.h
index bc63116..f5989f4 100644
--- a/arch/arm/include/asm/unified.h
+++ b/arch/arm/include/asm/unified.h
@@ -37,8 +37,8 @@
 #define THUMB(x...)	x
 #ifdef __ASSEMBLY__
 #define W(instr)	instr.w
-#endif
 #define BSYM(sym)	sym + 1
+#endif
 
 #else	/* !CONFIG_THUMB2_KERNEL */
 
@@ -49,8 +49,8 @@
 #define THUMB(x...)
 #ifdef __ASSEMBLY__
 #define W(instr)	instr
-#endif
 #define BSYM(sym)	sym
+#endif
 
 #endif	/* CONFIG_THUMB2_KERNEL */
 
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index b2a27b6..520889c 100644
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -87,7 +87,7 @@
 	get_thread_info tsk
 	ldr	r1, [tsk, #TI_FLAGS]		@ check for syscall tracing
 	mov	why, #1
-	tst	r1, #_TIF_SYSCALL_TRACE		@ are we tracing syscalls?
+	tst	r1, #_TIF_SYSCALL_WORK		@ are we tracing syscalls?
 	beq	ret_slow_syscall
 	mov	r1, sp
 	mov	r0, #1				@ trace exit [IP = 1]
@@ -443,7 +443,7 @@
 1:
 #endif
 
-	tst	r10, #_TIF_SYSCALL_TRACE		@ are we tracing syscalls?
+	tst	r10, #_TIF_SYSCALL_WORK		@ are we tracing syscalls?
 	bne	__sys_trace
 
 	cmp	scno, #NR_syscalls		@ check upper syscall limit
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index 14e277d..6d57911 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -99,6 +99,14 @@
  THUMB( it	eq )		@ force fixup-able long branch encoding
 	beq	__error_p			@ yes, error 'p'
 
+#ifdef CONFIG_ARM_LPAE
+	mrc	p15, 0, r3, c0, c1, 4		@ read ID_MMFR0
+	and	r3, r3, #0xf			@ extract VMSA support
+	cmp	r3, #5				@ long-descriptor translation table format?
+ THUMB( it	lo )				@ force fixup-able long branch encoding
+	blo	__error_p			@ only classic page table format
+#endif
+
 #ifndef CONFIG_XIP_KERNEL
 	adr	r3, 2f
 	ldmia	r3, {r4, r8}
diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index 483727a..e1d5e19 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -906,11 +906,6 @@
 {
 	unsigned long ip;
 
-	if (!test_thread_flag(TIF_SYSCALL_TRACE))
-		return scno;
-	if (!(current->ptrace & PT_PTRACED))
-		return scno;
-
 	/*
 	 * Save IP.  IP is used to denote syscall entry/exit:
 	 *  IP = 0 -> entry, = 1 -> exit
@@ -918,6 +913,17 @@
 	ip = regs->ARM_ip;
 	regs->ARM_ip = why;
 
+	if (!ip)
+		audit_syscall_exit(regs);
+	else
+		audit_syscall_entry(AUDIT_ARCH_ARMEB, scno, regs->ARM_r0,
+				    regs->ARM_r1, regs->ARM_r2, regs->ARM_r3);
+
+	if (!test_thread_flag(TIF_SYSCALL_TRACE))
+		return scno;
+	if (!(current->ptrace & PT_PTRACED))
+		return scno;
+
 	current_thread_info()->syscall = scno;
 
 	/* the 0x80 provides a way for the tracing parent to distinguish
diff --git a/arch/arm/mach-ep93xx/include/mach/dma.h b/arch/arm/mach-ep93xx/include/mach/dma.h
index 46d4d87..e82c642 100644
--- a/arch/arm/mach-ep93xx/include/mach/dma.h
+++ b/arch/arm/mach-ep93xx/include/mach/dma.h
@@ -37,7 +37,7 @@
  */
 struct ep93xx_dma_data {
 	int				port;
-	enum dma_data_direction		direction;
+	enum dma_transfer_direction	direction;
 	const char			*name;
 };
 
@@ -80,14 +80,14 @@
  * channel supports given DMA direction. Only M2P channels have such
  * limitation, for M2M channels the direction is configurable.
  */
-static inline enum dma_data_direction
+static inline enum dma_transfer_direction
 ep93xx_dma_chan_direction(struct dma_chan *chan)
 {
 	if (!ep93xx_dma_chan_is_m2p(chan))
 		return DMA_NONE;
 
 	/* even channels are for TX, odd for RX */
-	return (chan->chan_id % 2 == 0) ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
+	return (chan->chan_id % 2 == 0) ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;
 }
 
 #endif /* __ASM_ARCH_DMA_H */
diff --git a/arch/arm/mach-exynos/headsmp.S b/arch/arm/mach-exynos/headsmp.S
index 3cdeb36..5364d4b 100644
--- a/arch/arm/mach-exynos/headsmp.S
+++ b/arch/arm/mach-exynos/headsmp.S
@@ -36,6 +36,8 @@
 	 * should now contain the SVC stack for this core
 	 */
 	b	secondary_startup
+ENDPROC(exynos4_secondary_startup)
 
+	.align 2
 1:	.long	.
 	.long	pen_release
diff --git a/arch/arm/mach-exynos/mach-origen.c b/arch/arm/mach-exynos/mach-origen.c
index 2b11e04..0679b8a 100644
--- a/arch/arm/mach-exynos/mach-origen.c
+++ b/arch/arm/mach-exynos/mach-origen.c
@@ -597,7 +597,8 @@
 static struct s3c_fb_platdata origen_lcd_pdata __initdata = {
 	.win[0]		= &origen_fb_win0,
 	.vidcon0	= VIDCON0_VIDOUT_RGB | VIDCON0_PNRMODE_RGB,
-	.vidcon1	= VIDCON1_INV_HSYNC | VIDCON1_INV_VSYNC,
+	.vidcon1	= VIDCON1_INV_HSYNC | VIDCON1_INV_VSYNC |
+				VIDCON1_INV_VCLK,
 	.setup_gpio	= exynos4_fimd0_gpio_setup_24bpp,
 };
 
diff --git a/arch/arm/mach-exynos/platsmp.c b/arch/arm/mach-exynos/platsmp.c
index 60bc45e..683aec7 100644
--- a/arch/arm/mach-exynos/platsmp.c
+++ b/arch/arm/mach-exynos/platsmp.c
@@ -24,7 +24,6 @@
 #include <asm/cacheflush.h>
 #include <asm/hardware/gic.h>
 #include <asm/smp_scu.h>
-#include <asm/unified.h>
 
 #include <mach/hardware.h>
 #include <mach/regs-clock.h>
@@ -137,7 +136,7 @@
 	while (time_before(jiffies, timeout)) {
 		smp_rmb();
 
-		__raw_writel(BSYM(virt_to_phys(exynos4_secondary_startup)),
+		__raw_writel(virt_to_phys(exynos4_secondary_startup),
 			CPU1_BOOT_REG);
 		gic_raise_softirq(cpumask_of(cpu), 1);
 
@@ -192,6 +191,6 @@
 	 * until it receives a soft interrupt, and then the
 	 * secondary CPU branches to this address.
 	 */
-	__raw_writel(BSYM(virt_to_phys(exynos4_secondary_startup)),
+	__raw_writel(virt_to_phys(exynos4_secondary_startup),
 			CPU1_BOOT_REG);
 }
diff --git a/arch/arm/mach-highbank/highbank.c b/arch/arm/mach-highbank/highbank.c
index 804c4a5..7afbe1e 100644
--- a/arch/arm/mach-highbank/highbank.c
+++ b/arch/arm/mach-highbank/highbank.c
@@ -25,7 +25,6 @@
 #include <linux/smp.h>
 
 #include <asm/cacheflush.h>
-#include <asm/unified.h>
 #include <asm/smp_scu.h>
 #include <asm/hardware/arm_timer.h>
 #include <asm/hardware/timer-sp.h>
@@ -76,7 +75,7 @@
 #ifdef CONFIG_SMP
 	cpu = cpu_logical_map(cpu);
 #endif
-	writel(BSYM(virt_to_phys(jump_addr)), HB_JUMP_TABLE_VIRT(cpu));
+	writel(virt_to_phys(jump_addr), HB_JUMP_TABLE_VIRT(cpu));
 	__cpuc_flush_dcache_area(HB_JUMP_TABLE_VIRT(cpu), 16);
 	outer_clean_range(HB_JUMP_TABLE_PHYS(cpu),
 			  HB_JUMP_TABLE_PHYS(cpu) + 15);
diff --git a/arch/arm/mach-imx/mach-mx31_3ds.c b/arch/arm/mach-imx/mach-mx31_3ds.c
index 89c3325..4d1aab1 100644
--- a/arch/arm/mach-imx/mach-mx31_3ds.c
+++ b/arch/arm/mach-imx/mach-mx31_3ds.c
@@ -36,6 +36,7 @@
 #include <asm/mach/time.h>
 #include <asm/memory.h>
 #include <asm/mach/map.h>
+#include <asm/memblock.h>
 #include <mach/common.h>
 #include <mach/iomux-mx3.h>
 #include <mach/3ds_debugboard.h>
@@ -754,10 +755,8 @@
 static void __init mx31_3ds_reserve(void)
 {
 	/* reserve MX31_3DS_CAMERA_BUF_SIZE bytes for mx3-camera */
-	mx3_camera_base = memblock_alloc(MX31_3DS_CAMERA_BUF_SIZE,
+	mx3_camera_base = arm_memblock_steal(MX31_3DS_CAMERA_BUF_SIZE,
 					 MX31_3DS_CAMERA_BUF_SIZE);
-	memblock_free(mx3_camera_base, MX31_3DS_CAMERA_BUF_SIZE);
-	memblock_remove(mx3_camera_base, MX31_3DS_CAMERA_BUF_SIZE);
 }
 
 MACHINE_START(MX31_3DS, "Freescale MX31PDK (3DS)")
diff --git a/arch/arm/mach-imx/mach-mx31moboard.c b/arch/arm/mach-imx/mach-mx31moboard.c
index b95981d..f225262 100644
--- a/arch/arm/mach-imx/mach-mx31moboard.c
+++ b/arch/arm/mach-imx/mach-mx31moboard.c
@@ -41,6 +41,7 @@
 #include <asm/mach/arch.h>
 #include <asm/mach/time.h>
 #include <asm/mach/map.h>
+#include <asm/memblock.h>
 #include <mach/board-mx31moboard.h>
 #include <mach/common.h>
 #include <mach/hardware.h>
@@ -584,10 +585,8 @@
 static void __init mx31moboard_reserve(void)
 {
 	/* reserve 4 MiB for mx3-camera */
-	mx3_camera_base = memblock_alloc(MX3_CAMERA_BUF_SIZE,
+	mx3_camera_base = arm_memblock_steal(MX3_CAMERA_BUF_SIZE,
 			MX3_CAMERA_BUF_SIZE);
-	memblock_free(mx3_camera_base, MX3_CAMERA_BUF_SIZE);
-	memblock_remove(mx3_camera_base, MX3_CAMERA_BUF_SIZE);
 }
 
 MACHINE_START(MX31MOBOARD, "EPFL Mobots mx31moboard")
diff --git a/arch/arm/mach-imx/mach-pcm037.c b/arch/arm/mach-imx/mach-pcm037.c
index d7e1516..e48854b 100644
--- a/arch/arm/mach-imx/mach-pcm037.c
+++ b/arch/arm/mach-imx/mach-pcm037.c
@@ -39,6 +39,7 @@
 #include <asm/mach/arch.h>
 #include <asm/mach/time.h>
 #include <asm/mach/map.h>
+#include <asm/memblock.h>
 #include <mach/common.h>
 #include <mach/hardware.h>
 #include <mach/iomux-mx3.h>
@@ -680,10 +681,8 @@
 static void __init pcm037_reserve(void)
 {
 	/* reserve 4 MiB for mx3-camera */
-	mx3_camera_base = memblock_alloc(MX3_CAMERA_BUF_SIZE,
+	mx3_camera_base = arm_memblock_steal(MX3_CAMERA_BUF_SIZE,
 			MX3_CAMERA_BUF_SIZE);
-	memblock_free(mx3_camera_base, MX3_CAMERA_BUF_SIZE);
-	memblock_remove(mx3_camera_base, MX3_CAMERA_BUF_SIZE);
 }
 
 MACHINE_START(PCM037, "Phytec Phycore pcm037")
diff --git a/arch/arm/mach-imx/src.c b/arch/arm/mach-imx/src.c
index 4bde04f..29bd124 100644
--- a/arch/arm/mach-imx/src.c
+++ b/arch/arm/mach-imx/src.c
@@ -15,7 +15,6 @@
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/smp.h>
-#include <asm/unified.h>
 
 #define SRC_SCR				0x000
 #define SRC_GPR1			0x020
@@ -43,7 +42,7 @@
 void imx_set_cpu_jump(int cpu, void *jump_addr)
 {
 	cpu = cpu_logical_map(cpu);
-	writel_relaxed(BSYM(virt_to_phys(jump_addr)),
+	writel_relaxed(virt_to_phys(jump_addr),
 		       src_base + SRC_GPR1 + cpu * 8);
 }
 
diff --git a/arch/arm/mach-msm/headsmp.S b/arch/arm/mach-msm/headsmp.S
index 0c631a9..bcd5af2 100644
--- a/arch/arm/mach-msm/headsmp.S
+++ b/arch/arm/mach-msm/headsmp.S
@@ -34,6 +34,7 @@
 	 * should now contain the SVC stack for this core
 	 */
 	b	secondary_startup
+ENDPROC(msm_secondary_startup)
 
 	.align
 1:	.long	.
diff --git a/arch/arm/mach-msm/vreg.c b/arch/arm/mach-msm/vreg.c
index a9103bc..bd66ed0 100644
--- a/arch/arm/mach-msm/vreg.c
+++ b/arch/arm/mach-msm/vreg.c
@@ -19,6 +19,7 @@
 #include <linux/device.h>
 #include <linux/init.h>
 #include <linux/debugfs.h>
+#include <linux/module.h>
 #include <linux/string.h>
 #include <mach/vreg.h>
 
diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
index 904bd1d..a8ba7b9 100644
--- a/arch/arm/mach-omap2/Kconfig
+++ b/arch/arm/mach-omap2/Kconfig
@@ -366,8 +366,8 @@
 	  going on could result in system crashes;
 
 config OMAP4_ERRATA_I688
-	bool "OMAP4 errata: Async Bridge Corruption"
-	depends on ARCH_OMAP4
+	bool "OMAP4 errata: Async Bridge Corruption (BROKEN)"
+	depends on ARCH_OMAP4 && BROKEN
 	select ARCH_HAS_BARRIERS
 	help
 	  If a data is stalled inside asynchronous bridge because of back
diff --git a/arch/arm/mach-omap2/devices.c b/arch/arm/mach-omap2/devices.c
index 46dfd1a..0b510ad 100644
--- a/arch/arm/mach-omap2/devices.c
+++ b/arch/arm/mach-omap2/devices.c
@@ -28,7 +28,6 @@
 #include <plat/board.h>
 #include <plat/mcbsp.h>
 #include <plat/mmc.h>
-#include <plat/iommu.h>
 #include <plat/dma.h>
 #include <plat/omap_hwmod.h>
 #include <plat/omap_device.h>
@@ -128,6 +127,10 @@
 };
 #endif
 
+#if defined(CONFIG_IOMMU_API)
+
+#include <plat/iommu.h>
+
 static struct resource omap3isp_resources[] = {
 	{
 		.start		= OMAP3430_ISP_BASE,
@@ -224,6 +227,15 @@
 	return platform_device_register(&omap3isp_device);
 }
 
+#else /* !CONFIG_IOMMU_API */
+
+int omap3_init_camera(struct isp_platform_data *pdata)
+{
+	return 0;
+}
+
+#endif
+
 static inline void omap_init_camera(void)
 {
 #if defined(CONFIG_VIDEO_OMAP2) || defined(CONFIG_VIDEO_OMAP2_MODULE)
diff --git a/arch/arm/mach-omap2/omap-secure.c b/arch/arm/mach-omap2/omap-secure.c
index 69f3c72..d8f8ef4 100644
--- a/arch/arm/mach-omap2/omap-secure.c
+++ b/arch/arm/mach-omap2/omap-secure.c
@@ -16,6 +16,7 @@
 #include <linux/memblock.h>
 
 #include <asm/cacheflush.h>
+#include <asm/memblock.h>
 
 #include <mach/omap-secure.h>
 
@@ -57,20 +58,10 @@
 /* Allocate the memory to save secure ram */
 int __init omap_secure_ram_reserve_memblock(void)
 {
-	phys_addr_t paddr;
 	u32 size = OMAP_SECURE_RAM_STORAGE;
 
 	size = ALIGN(size, SZ_1M);
-	paddr = memblock_alloc(size, SZ_1M);
-	if (!paddr) {
-		pr_err("%s: failed to reserve %x bytes\n",
-				__func__, size);
-		return -ENOMEM;
-	}
-	memblock_free(paddr, size);
-	memblock_remove(paddr, size);
-
-	omap_secure_memblock_base = paddr;
+	omap_secure_memblock_base = arm_memblock_steal(size, SZ_1M);
 
 	return 0;
 }
diff --git a/arch/arm/mach-omap2/omap4-common.c b/arch/arm/mach-omap2/omap4-common.c
index bc16c81..40a8fbc 100644
--- a/arch/arm/mach-omap2/omap4-common.c
+++ b/arch/arm/mach-omap2/omap4-common.c
@@ -20,6 +20,7 @@
 #include <asm/hardware/gic.h>
 #include <asm/hardware/cache-l2x0.h>
 #include <asm/mach/map.h>
+#include <asm/memblock.h>
 
 #include <plat/irqs.h>
 #include <plat/sram.h>
@@ -61,13 +62,8 @@
 		return -ENODEV;
 
 	size = ALIGN(PAGE_SIZE, SZ_1M);
-	paddr = memblock_alloc(size, SZ_1M);
-	if (!paddr) {
-		pr_err("%s: failed to reserve 4 Kbytes\n", __func__);
-		return -ENOMEM;
-	}
-	memblock_free(paddr, size);
-	memblock_remove(paddr, size);
+	paddr = arm_memblock_steal(size, SZ_1M);
+
 	dram_io_desc[0].virtual = OMAP4_DRAM_BARRIER_VA;
 	dram_io_desc[0].pfn = __phys_to_pfn(paddr);
 	dram_io_desc[0].length = size;
diff --git a/arch/arm/mach-picoxcell/time.c b/arch/arm/mach-picoxcell/time.c
index 6c89cf8..2ecba67 100644
--- a/arch/arm/mach-picoxcell/time.c
+++ b/arch/arm/mach-picoxcell/time.c
@@ -67,7 +67,7 @@
 
 static void __iomem *sched_io_base;
 
-unsigned u32 notrace picoxcell_read_sched_clock(void)
+static u32 picoxcell_read_sched_clock(void)
 {
 	return __raw_readl(sched_io_base);
 }
diff --git a/arch/arm/mach-realview/platsmp.c b/arch/arm/mach-realview/platsmp.c
index e83c654..17c878d 100644
--- a/arch/arm/mach-realview/platsmp.c
+++ b/arch/arm/mach-realview/platsmp.c
@@ -17,7 +17,6 @@
 #include <asm/hardware/gic.h>
 #include <asm/mach-types.h>
 #include <asm/smp_scu.h>
-#include <asm/unified.h>
 
 #include <mach/board-eb.h>
 #include <mach/board-pb11mp.h>
@@ -75,6 +74,6 @@
 	 * until it receives a soft interrupt, and then the
 	 * secondary CPU branches to this address.
 	 */
-	__raw_writel(BSYM(virt_to_phys(versatile_secondary_startup)),
+	__raw_writel(virt_to_phys(versatile_secondary_startup),
 		     __io_address(REALVIEW_SYS_FLAGSSET));
 }
diff --git a/arch/arm/mach-s3c64xx/include/mach/crag6410.h b/arch/arm/mach-s3c64xx/include/mach/crag6410.h
index 5d55ab0..4cb2f951 100644
--- a/arch/arm/mach-s3c64xx/include/mach/crag6410.h
+++ b/arch/arm/mach-s3c64xx/include/mach/crag6410.h
@@ -21,5 +21,6 @@
 #define CODEC_GPIO_BASE			(GPIO_BOARD_START + 8)
 #define GLENFARCLAS_PMIC_GPIO_BASE	(GPIO_BOARD_START + 32)
 #define BANFF_PMIC_GPIO_BASE		(GPIO_BOARD_START + 64)
+#define MMGPIO_GPIO_BASE		(GPIO_BOARD_START + 96)
 
 #endif
diff --git a/arch/arm/mach-s3c64xx/mach-crag6410.c b/arch/arm/mach-s3c64xx/mach-crag6410.c
index 1cc91d7..8077f65 100644
--- a/arch/arm/mach-s3c64xx/mach-crag6410.c
+++ b/arch/arm/mach-s3c64xx/mach-crag6410.c
@@ -260,6 +260,7 @@
 
 static struct resource crag6410_mmgpio_resource[] = {
 	[0] = {
+		.name	= "dat",
 		.start	= S3C64XX_PA_XM0CSN4 + 1,
 		.end	= S3C64XX_PA_XM0CSN4 + 1,
 		.flags	= IORESOURCE_MEM,
@@ -272,7 +273,7 @@
 	.resource	= crag6410_mmgpio_resource,
 	.num_resources	= ARRAY_SIZE(crag6410_mmgpio_resource),
 	.dev.platform_data = &(struct bgpio_pdata) {
-		.base	= -1,
+		.base	= MMGPIO_GPIO_BASE,
 	},
 };
 
@@ -328,7 +329,6 @@
 
 static struct platform_device *crag6410_devices[] __initdata = {
 	&s3c_device_hsmmc0,
-	&s3c_device_hsmmc1,
 	&s3c_device_hsmmc2,
 	&s3c_device_i2c0,
 	&s3c_device_i2c1,
@@ -355,7 +355,7 @@
 
 static struct pca953x_platform_data crag6410_pca_data = {
 	.gpio_base	= PCA935X_GPIO_BASE,
-	.irq_base	= 0,
+	.irq_base	= -1,
 };
 
 /* VDDARM is controlled by DVS1 connected to GPK(0) */
@@ -683,12 +683,6 @@
 	.cd_type		= S3C_SDHCI_CD_PERMANENT,
 };
 
-static struct s3c_sdhci_platdata crag6410_hsmmc1_pdata = {
-	.max_width		= 4,
-	.cd_type		= S3C_SDHCI_CD_GPIO,
-	.ext_cd_gpio		= S3C64XX_GPF(11),
-};
-
 static void crag6410_cfg_sdhci0(struct platform_device *dev, int width)
 {
 	/* Set all the necessary GPG pins to special-function 2 */
@@ -723,7 +717,6 @@
 	gpio_direction_output(S3C64XX_GPF(10), 1);
 
 	s3c_sdhci0_set_platdata(&crag6410_hsmmc0_pdata);
-	s3c_sdhci1_set_platdata(&crag6410_hsmmc1_pdata);
 	s3c_sdhci2_set_platdata(&crag6410_hsmmc2_pdata);
 
 	s3c_i2c0_set_platdata(&i2c0_pdata);
diff --git a/arch/arm/mach-s3c64xx/pm.c b/arch/arm/mach-s3c64xx/pm.c
index 055dac9..7d3e81b 100644
--- a/arch/arm/mach-s3c64xx/pm.c
+++ b/arch/arm/mach-s3c64xx/pm.c
@@ -346,23 +346,10 @@
 
 static __init int s3c64xx_pm_initcall(void)
 {
-	u32 val;
-
 	pm_cpu_prep = s3c64xx_pm_prepare;
 	pm_cpu_sleep = s3c64xx_cpu_suspend;
 	pm_uart_udivslot = 1;
 
-	/*
-	 * Unconditionally disable power domains that contain only
-	 * blocks which have no mainline driver support.
-	 */
-	val = __raw_readl(S3C64XX_NORMAL_CFG);
-	val &= ~(S3C64XX_NORMALCFG_DOMAIN_G_ON |
-		 S3C64XX_NORMALCFG_DOMAIN_V_ON |
-		 S3C64XX_NORMALCFG_DOMAIN_I_ON |
-		 S3C64XX_NORMALCFG_DOMAIN_P_ON);
-	__raw_writel(val, S3C64XX_NORMAL_CFG);
-
 #ifdef CONFIG_S3C_PM_DEBUG_LED_SMDK
 	gpio_request(S3C64XX_GPN(12), "DEBUG_LED0");
 	gpio_request(S3C64XX_GPN(13), "DEBUG_LED1");
diff --git a/arch/arm/mach-sa1100/assabet.c b/arch/arm/mach-sa1100/assabet.c
index 5bc6b38..ebafe8a 100644
--- a/arch/arm/mach-sa1100/assabet.c
+++ b/arch/arm/mach-sa1100/assabet.c
@@ -280,7 +280,7 @@
 	int prot = PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_DOMAIN(DOMAIN_IO);
 	pmd_t *pmd;
 
-	pmd = pmd_offset(pgd_offset_k(virt), virt);
+	pmd = pmd_offset(pud_offset(pgd_offset_k(virt), virt), virt);
 	*pmd = __pmd(phys | prot);
 	flush_pmd_entry(pmd);
 }
diff --git a/arch/arm/mach-shmobile/pm-sh7372.c b/arch/arm/mach-shmobile/pm-sh7372.c
index 77b8fc1..fcf8b17 100644
--- a/arch/arm/mach-shmobile/pm-sh7372.c
+++ b/arch/arm/mach-shmobile/pm-sh7372.c
@@ -276,7 +276,7 @@
 	 * Serial consoles make use of SCIF hardware located in A3SP,
 	 * keep such power domain on if "no_console_suspend" is set.
 	 */
-	return console_suspend_enabled ? -EBUSY : 0;
+	return console_suspend_enabled ? 0 : -EBUSY;
 }
 
 struct sh7372_pm_domain sh7372_a3sp = {
diff --git a/arch/arm/mach-shmobile/setup-sh7372.c b/arch/arm/mach-shmobile/setup-sh7372.c
index 1ea89be..6fcf304 100644
--- a/arch/arm/mach-shmobile/setup-sh7372.c
+++ b/arch/arm/mach-shmobile/setup-sh7372.c
@@ -445,31 +445,39 @@
 	},
 };
 
+#define SH7372_CHCLR 0x220
+
 static const struct sh_dmae_channel sh7372_dmae_channels[] = {
 	{
 		.offset = 0,
 		.dmars = 0,
 		.dmars_bit = 0,
+		.chclr_offset = SH7372_CHCLR + 0,
 	}, {
 		.offset = 0x10,
 		.dmars = 0,
 		.dmars_bit = 8,
+		.chclr_offset = SH7372_CHCLR + 0x10,
 	}, {
 		.offset = 0x20,
 		.dmars = 4,
 		.dmars_bit = 0,
+		.chclr_offset = SH7372_CHCLR + 0x20,
 	}, {
 		.offset = 0x30,
 		.dmars = 4,
 		.dmars_bit = 8,
+		.chclr_offset = SH7372_CHCLR + 0x30,
 	}, {
 		.offset = 0x50,
 		.dmars = 8,
 		.dmars_bit = 0,
+		.chclr_offset = SH7372_CHCLR + 0x50,
 	}, {
 		.offset = 0x60,
 		.dmars = 8,
 		.dmars_bit = 8,
+		.chclr_offset = SH7372_CHCLR + 0x60,
 	}
 };
 
@@ -487,6 +495,7 @@
 	.ts_shift	= ts_shift,
 	.ts_shift_num	= ARRAY_SIZE(ts_shift),
 	.dmaor_init	= DMAOR_DME,
+	.chclr_present	= 1,
 };
 
 /* Resource order important! */
@@ -494,7 +503,7 @@
 	{
 		/* Channel registers and DMAOR */
 		.start	= 0xfe008020,
-		.end	= 0xfe00808f,
+		.end	= 0xfe00828f,
 		.flags	= IORESOURCE_MEM,
 	},
 	{
@@ -522,7 +531,7 @@
 	{
 		/* Channel registers and DMAOR */
 		.start	= 0xfe018020,
-		.end	= 0xfe01808f,
+		.end	= 0xfe01828f,
 		.flags	= IORESOURCE_MEM,
 	},
 	{
@@ -550,7 +559,7 @@
 	{
 		/* Channel registers and DMAOR */
 		.start	= 0xfe028020,
-		.end	= 0xfe02808f,
+		.end	= 0xfe02828f,
 		.flags	= IORESOURCE_MEM,
 	},
 	{
diff --git a/arch/arm/mach-ux500/headsmp.S b/arch/arm/mach-ux500/headsmp.S
index 64fa451..08da5589 100644
--- a/arch/arm/mach-ux500/headsmp.S
+++ b/arch/arm/mach-ux500/headsmp.S
@@ -32,6 +32,8 @@
 	 * should now contain the SVC stack for this core
 	 */
 	b	secondary_startup
+ENDPROC(u8500_secondary_startup)
 
+	.align 2
 1:	.long	.
 	.long	pen_release
diff --git a/arch/arm/mach-vexpress/platsmp.c b/arch/arm/mach-vexpress/platsmp.c
index 2b5f7ac..124ffb1 100644
--- a/arch/arm/mach-vexpress/platsmp.c
+++ b/arch/arm/mach-vexpress/platsmp.c
@@ -13,8 +13,6 @@
 #include <linux/smp.h>
 #include <linux/io.h>
 
-#include <asm/unified.h>
-
 #include <mach/motherboard.h>
 #define V2M_PA_CS7 0x10000000
 
@@ -46,6 +44,6 @@
 	 * secondary CPU branches to this address.
 	 */
 	writel(~0, MMIO_P2V(V2M_SYS_FLAGSCLR));
-	writel(BSYM(virt_to_phys(versatile_secondary_startup)),
+	writel(virt_to_phys(versatile_secondary_startup),
 		MMIO_P2V(V2M_SYS_FLAGSSET));
 }
diff --git a/arch/arm/mach-w90x900/clksel.c b/arch/arm/mach-w90x900/clksel.c
index 3de4a52..06d867dc 100644
--- a/arch/arm/mach-w90x900/clksel.c
+++ b/arch/arm/mach-w90x900/clksel.c
@@ -48,7 +48,7 @@
 		offset = ATAOFFSET;
 	else if (strcmp(dev_id, "nuc900-lcd") == 0)
 		offset = LCDOFFSET;
-	else if (strcmp(dev_id, "nuc900-audio") == 0)
+	else if (strcmp(dev_id, "nuc900-ac97") == 0)
 		offset = AUDOFFSET;
 	else
 		offset = CPUOFFSET;
diff --git a/arch/arm/mach-w90x900/cpu.c b/arch/arm/mach-w90x900/cpu.c
index 604e1db..9a06619 100644
--- a/arch/arm/mach-w90x900/cpu.c
+++ b/arch/arm/mach-w90x900/cpu.c
@@ -79,7 +79,7 @@
 
 static struct clk_lookup nuc900_clkregs[] = {
 	DEF_CLKLOOK(&clk_lcd, "nuc900-lcd", NULL),
-	DEF_CLKLOOK(&clk_audio, "nuc900-audio", NULL),
+	DEF_CLKLOOK(&clk_audio, "nuc900-ac97", NULL),
 	DEF_CLKLOOK(&clk_fmi, "nuc900-fmi", NULL),
 	DEF_CLKLOOK(&clk_ms, "nuc900-fmi", "MS"),
 	DEF_CLKLOOK(&clk_sd, "nuc900-fmi", "SD"),
diff --git a/arch/arm/mach-w90x900/dev.c b/arch/arm/mach-w90x900/dev.c
index 5b0c38a..78110be 100644
--- a/arch/arm/mach-w90x900/dev.c
+++ b/arch/arm/mach-w90x900/dev.c
@@ -501,8 +501,8 @@
 
 };
 
-struct platform_device nuc900_device_audio = {
-	.name		= "nuc900-audio",
+struct platform_device nuc900_device_ac97 = {
+	.name		= "nuc900-ac97",
 	.id		= -1,
 	.num_resources	= ARRAY_SIZE(nuc900_ac97_resource),
 	.resource	= nuc900_ac97_resource,
@@ -523,7 +523,7 @@
 	&nuc900_device_emc,
 	&nuc900_device_spi,
 	&nuc900_device_wdt,
-	&nuc900_device_audio,
+	&nuc900_device_ac97,
 };
 
 /* Provide adding specific CPU platform devices API */
diff --git a/arch/arm/mach-w90x900/mfp.c b/arch/arm/mach-w90x900/mfp.c
index 9dd7461..c58d142 100644
--- a/arch/arm/mach-w90x900/mfp.c
+++ b/arch/arm/mach-w90x900/mfp.c
@@ -155,7 +155,7 @@
 	} else if (strcmp(dev_id, "nuc900-i2c1") == 0) {
 		mfpen &= ~(GPIOG2TO3);
 		mfpen |= ENI2C1;/*enable i2c1*/
-	} else if (strcmp(dev_id, "nuc900-audio") == 0) {
+	} else if (strcmp(dev_id, "nuc900-ac97") == 0) {
 		mfpen &= ~(GPIOG22TO23);
 		mfpen |= ENAC97;/*enable AC97*/
 	} else if (strcmp(dev_id, "nuc900-mmc-port1") == 0) {
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index e34ea8a..6ec1226 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -22,6 +22,7 @@
 #include <linux/memblock.h>
 
 #include <asm/mach-types.h>
+#include <asm/memblock.h>
 #include <asm/prom.h>
 #include <asm/sections.h>
 #include <asm/setup.h>
@@ -307,6 +308,21 @@
 }
 #endif
 
+static bool arm_memblock_steal_permitted = true;
+
+phys_addr_t arm_memblock_steal(phys_addr_t size, phys_addr_t align)
+{
+	phys_addr_t phys;
+
+	BUG_ON(!arm_memblock_steal_permitted);
+
+	phys = memblock_alloc(size, align);
+	memblock_free(phys, size);
+	memblock_remove(phys, size);
+
+	return phys;
+}
+
 void __init arm_memblock_init(struct meminfo *mi, struct machine_desc *mdesc)
 {
 	int i;
@@ -349,6 +365,7 @@
 	if (mdesc->reserve)
 		mdesc->reserve();
 
+	arm_memblock_steal_permitted = false;
 	memblock_allow_resize();
 	memblock_dump_all();
 }
diff --git a/arch/arm/plat-mxc/include/mach/mx3fb.h b/arch/arm/plat-mxc/include/mach/mx3fb.h
index ac24c5c..fdbe600 100644
--- a/arch/arm/plat-mxc/include/mach/mx3fb.h
+++ b/arch/arm/plat-mxc/include/mach/mx3fb.h
@@ -22,6 +22,20 @@
 #define FB_SYNC_SWAP_RGB	0x04000000
 #define FB_SYNC_CLK_SEL_EN	0x02000000
 
+/*
+ * Specify the way your display is connected. The IPU can arbitrarily
+ * map the internal colors to the external data lines. We only support
+ * the following mappings at the moment.
+ */
+enum disp_data_mapping {
+	/* blue -> d[0..5], green -> d[6..11], red -> d[12..17] */
+	IPU_DISP_DATA_MAPPING_RGB666,
+	/* blue -> d[0..4], green -> d[5..10], red -> d[11..15] */
+	IPU_DISP_DATA_MAPPING_RGB565,
+	/* blue -> d[0..7], green -> d[8..15], red -> d[16..23] */
+	IPU_DISP_DATA_MAPPING_RGB888,
+};
+
 /**
  * struct mx3fb_platform_data - mx3fb platform data
  *
@@ -33,6 +47,7 @@
 	const char			*name;
 	const struct fb_videomode	*mode;
 	int				num_modes;
+	enum disp_data_mapping		disp_data_fmt;
 };
 
 #endif
diff --git a/arch/arm/plat-nomadik/include/plat/ste_dma40.h b/arch/arm/plat-nomadik/include/plat/ste_dma40.h
index 685c787..fd0ee84 100644
--- a/arch/arm/plat-nomadik/include/plat/ste_dma40.h
+++ b/arch/arm/plat-nomadik/include/plat/ste_dma40.h
@@ -113,7 +113,8 @@
  * @dst_dev_type: Dst device type
  * @src_info: Parameters for dst half channel
  * @dst_info: Parameters for dst half channel
- *
+ * @use_fixed_channel: if true, use physical channel specified by phy_channel
+ * @phy_channel: physical channel to use, only if use_fixed_channel is true
  *
  * This structure has to be filled by the client drivers.
  * It is recommended to do all dma configurations for clients in the machine.
@@ -129,6 +130,9 @@
 	int					 dst_dev_type;
 	struct stedma40_half_channel_info	 src_info;
 	struct stedma40_half_channel_info	 dst_info;
+
+	bool					 use_fixed_channel;
+	int					 phy_channel;
 };
 
 /**
@@ -153,6 +157,7 @@
 	struct stedma40_chan_cfg	*memcpy_conf_phy;
 	struct stedma40_chan_cfg	*memcpy_conf_log;
 	int				 disabled_channels[STEDMA40_MAX_PHYS];
+	bool				 use_esram_lcla;
 };
 
 #ifdef CONFIG_STE_DMA40
@@ -187,7 +192,7 @@
 dma_async_tx_descriptor *stedma40_slave_mem(struct dma_chan *chan,
 					    dma_addr_t addr,
 					    unsigned int size,
-					    enum dma_data_direction direction,
+					    enum dma_transfer_direction direction,
 					    unsigned long flags)
 {
 	struct scatterlist sg;
@@ -209,7 +214,7 @@
 dma_async_tx_descriptor *stedma40_slave_mem(struct dma_chan *chan,
 					    dma_addr_t addr,
 					    unsigned int size,
-					    enum dma_data_direction direction,
+					    enum dma_transfer_direction direction,
 					    unsigned long flags)
 {
 	return NULL;
diff --git a/arch/arm/plat-omap/devices.c b/arch/arm/plat-omap/devices.c
index 1971932..60278f4 100644
--- a/arch/arm/plat-omap/devices.c
+++ b/arch/arm/plat-omap/devices.c
@@ -20,6 +20,7 @@
 #include <mach/hardware.h>
 #include <asm/mach-types.h>
 #include <asm/mach/map.h>
+#include <asm/memblock.h>
 
 #include <plat/tc.h>
 #include <plat/board.h>
@@ -164,14 +165,12 @@
 	if (!size)
 		return;
 
-	paddr = memblock_alloc(size, SZ_1M);
+	paddr = arm_memblock_steal(size, SZ_1M);
 	if (!paddr) {
 		pr_err("%s: failed to reserve %x bytes\n",
 				__func__, size);
 		return;
 	}
-	memblock_free(paddr, size);
-	memblock_remove(paddr, size);
 
 	omap_dsp_phys_mempool_base = paddr;
 }
diff --git a/arch/arm/plat-s3c24xx/cpu.c b/arch/arm/plat-s3c24xx/cpu.c
index 1121df1..21f1fda 100644
--- a/arch/arm/plat-s3c24xx/cpu.c
+++ b/arch/arm/plat-s3c24xx/cpu.c
@@ -38,8 +38,6 @@
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
 
-#include <mach/system-reset.h>
-
 #include <mach/regs-gpio.h>
 #include <plat/regs-serial.h>
 
diff --git a/arch/arm/plat-samsung/dma-ops.c b/arch/arm/plat-samsung/dma-ops.c
index 2cded87..0747c77 100644
--- a/arch/arm/plat-samsung/dma-ops.c
+++ b/arch/arm/plat-samsung/dma-ops.c
@@ -37,14 +37,14 @@
 				(void *)dma_ch;
 	chan = dma_request_channel(mask, pl330_filter, filter_param);
 
-	if (info->direction == DMA_FROM_DEVICE) {
+	if (info->direction == DMA_DEV_TO_MEM) {
 		memset(&slave_config, 0, sizeof(struct dma_slave_config));
 		slave_config.direction = info->direction;
 		slave_config.src_addr = info->fifo;
 		slave_config.src_addr_width = info->width;
 		slave_config.src_maxburst = 1;
 		dmaengine_slave_config(chan, &slave_config);
-	} else if (info->direction == DMA_TO_DEVICE) {
+	} else if (info->direction == DMA_MEM_TO_DEV) {
 		memset(&slave_config, 0, sizeof(struct dma_slave_config));
 		slave_config.direction = info->direction;
 		slave_config.dst_addr = info->fifo;
diff --git a/arch/arm/plat-samsung/include/plat/dma-ops.h b/arch/arm/plat-samsung/include/plat/dma-ops.h
index 22eafc3..71a6827 100644
--- a/arch/arm/plat-samsung/include/plat/dma-ops.h
+++ b/arch/arm/plat-samsung/include/plat/dma-ops.h
@@ -14,10 +14,11 @@
 #define __SAMSUNG_DMA_OPS_H_ __FILE__
 
 #include <linux/dmaengine.h>
+#include <mach/dma.h>
 
 struct samsung_dma_prep_info {
 	enum dma_transaction_type cap;
-	enum dma_data_direction direction;
+	enum dma_transfer_direction direction;
 	dma_addr_t buf;
 	unsigned long period;
 	unsigned long len;
@@ -27,7 +28,7 @@
 
 struct samsung_dma_info {
 	enum dma_transaction_type cap;
-	enum dma_data_direction direction;
+	enum dma_transfer_direction direction;
 	enum dma_slave_buswidth width;
 	dma_addr_t fifo;
 	struct s3c2410_dma_client *client;
diff --git a/arch/arm/plat-samsung/include/plat/dma.h b/arch/arm/plat-samsung/include/plat/dma.h
index b906112..7b02143 100644
--- a/arch/arm/plat-samsung/include/plat/dma.h
+++ b/arch/arm/plat-samsung/include/plat/dma.h
@@ -10,6 +10,9 @@
  * published by the Free Software Foundation.
 */
 
+#ifndef __PLAT_DMA_H
+#define __PLAT_DMA_H
+
 #include <linux/dma-mapping.h>
 
 enum s3c2410_dma_buffresult {
@@ -122,5 +125,6 @@
 extern int s3c2410_dma_set_opfn(enum dma_ch, s3c2410_dma_opfn_t rtn);
 extern int s3c2410_dma_set_buffdone_fn(enum dma_ch, s3c2410_dma_cbfn_t rtn);
 
-
 #include <plat/dma-ops.h>
+
+#endif
diff --git a/arch/arm/plat-samsung/include/plat/s3c64xx-spi.h b/arch/arm/plat-samsung/include/plat/s3c64xx-spi.h
index aea68b6..fa95e9a 100644
--- a/arch/arm/plat-samsung/include/plat/s3c64xx-spi.h
+++ b/arch/arm/plat-samsung/include/plat/s3c64xx-spi.h
@@ -11,6 +11,8 @@
 #ifndef __S3C64XX_PLAT_SPI_H
 #define __S3C64XX_PLAT_SPI_H
 
+struct platform_device;
+
 /**
  * struct s3c64xx_spi_csinfo - ChipSelect description
  * @fb_delay: Slave specific feedback delay.
diff --git a/arch/arm/plat-versatile/headsmp.S b/arch/arm/plat-versatile/headsmp.S
index d397a1f..dd703ef 100644
--- a/arch/arm/plat-versatile/headsmp.S
+++ b/arch/arm/plat-versatile/headsmp.S
@@ -38,3 +38,4 @@
 	.align
 1:	.long	.
 	.long	pen_release
+ENDPROC(versatile_secondary_startup)
diff --git a/arch/ia64/include/asm/ptrace.h b/arch/ia64/include/asm/ptrace.h
index f5cb276..68c98f5 100644
--- a/arch/ia64/include/asm/ptrace.h
+++ b/arch/ia64/include/asm/ptrace.h
@@ -246,7 +246,18 @@
 	return regs->ar_bspstore;
 }
 
-#define regs_return_value(regs) ((regs)->r8)
+static inline int is_syscall_success(struct pt_regs *regs)
+{
+	return regs->r10 != -1;
+}
+
+static inline long regs_return_value(struct pt_regs *regs)
+{
+	if (is_syscall_success(regs))
+		return regs->r8;
+	else
+		return -regs->r8;
+}
 
 /* Conserve space in histogram by encoding slot bits in address
  * bits 2 and 3 rather than bits 0 and 1.
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index bfb4d01..5207035 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -429,22 +429,24 @@
 static struct acpi_table_slit __initdata *slit_table;
 cpumask_t early_cpu_possible_map = CPU_MASK_NONE;
 
-static int get_processor_proximity_domain(struct acpi_srat_cpu_affinity *pa)
+static int __init
+get_processor_proximity_domain(struct acpi_srat_cpu_affinity *pa)
 {
 	int pxm;
 
 	pxm = pa->proximity_domain_lo;
-	if (ia64_platform_is("sn2"))
+	if (ia64_platform_is("sn2") || acpi_srat_revision >= 2)
 		pxm += pa->proximity_domain_hi[0] << 8;
 	return pxm;
 }
 
-static int get_memory_proximity_domain(struct acpi_srat_mem_affinity *ma)
+static int __init
+get_memory_proximity_domain(struct acpi_srat_mem_affinity *ma)
 {
 	int pxm;
 
 	pxm = ma->proximity_domain;
-	if (!ia64_platform_is("sn2"))
+	if (!ia64_platform_is("sn2") && acpi_srat_revision <= 1)
 		pxm &= 0xff;
 
 	return pxm;
diff --git a/arch/ia64/kernel/ptrace.c b/arch/ia64/kernel/ptrace.c
index 8848f43..dad9166 100644
--- a/arch/ia64/kernel/ptrace.c
+++ b/arch/ia64/kernel/ptrace.c
@@ -1246,15 +1246,8 @@
 	if (test_thread_flag(TIF_RESTORE_RSE))
 		ia64_sync_krbs();
 
-	if (unlikely(current->audit_context)) {
-		long syscall;
-		int arch;
 
-		syscall = regs.r15;
-		arch = AUDIT_ARCH_IA64;
-
-		audit_syscall_entry(arch, syscall, arg0, arg1, arg2, arg3);
-	}
+	audit_syscall_entry(AUDIT_ARCH_IA64, regs.r15, arg0, arg1, arg2, arg3);
 
 	return 0;
 }
@@ -1268,14 +1261,7 @@
 {
 	int step;
 
-	if (unlikely(current->audit_context)) {
-		int success = AUDITSC_RESULT(regs.r10);
-		long result = regs.r8;
-
-		if (success != AUDITSC_SUCCESS)
-			result = -result;
-		audit_syscall_exit(success, result);
-	}
+	audit_syscall_exit(&regs);
 
 	step = test_thread_flag(TIF_SINGLESTEP);
 	if (step || test_thread_flag(TIF_SYSCALL_TRACE))
diff --git a/arch/microblaze/boot/Makefile b/arch/microblaze/boot/Makefile
index 4c4e58e..0c796cf 100644
--- a/arch/microblaze/boot/Makefile
+++ b/arch/microblaze/boot/Makefile
@@ -53,6 +53,6 @@
 DTC_FLAGS := -p 1024
 
 $(obj)/%.dtb: $(src)/dts/%.dts FORCE
-	$(call cmd,dtc)
+	$(call if_changed_dep,dtc)
 
 clean-files += *.dtb simpleImage.*.unstrip linux.bin.ub
diff --git a/arch/microblaze/include/asm/ptrace.h b/arch/microblaze/include/asm/ptrace.h
index 816bee6..94e92c8 100644
--- a/arch/microblaze/include/asm/ptrace.h
+++ b/arch/microblaze/include/asm/ptrace.h
@@ -61,6 +61,11 @@
 #define instruction_pointer(regs)	((regs)->pc)
 #define profile_pc(regs)		instruction_pointer(regs)
 
+static inline long regs_return_value(struct pt_regs *regs)
+{
+	return regs->r3;
+}
+
 #else /* __KERNEL__ */
 
 /* pt_regs offsets used by gdbserver etc in ptrace syscalls */
diff --git a/arch/microblaze/kernel/ptrace.c b/arch/microblaze/kernel/ptrace.c
index 043cb58..6eb2aa9 100644
--- a/arch/microblaze/kernel/ptrace.c
+++ b/arch/microblaze/kernel/ptrace.c
@@ -147,10 +147,8 @@
 		 */
 		ret = -1L;
 
-	if (unlikely(current->audit_context))
-		audit_syscall_entry(EM_MICROBLAZE, regs->r12,
-				    regs->r5, regs->r6,
-				    regs->r7, regs->r8);
+	audit_syscall_entry(EM_MICROBLAZE, regs->r12, regs->r5, regs->r6,
+			    regs->r7, regs->r8);
 
 	return ret ?: regs->r12;
 }
@@ -159,8 +157,7 @@
 {
 	int step;
 
-	if (unlikely(current->audit_context))
-		audit_syscall_exit(AUDITSC_RESULT(regs->r3), regs->r3);
+	audit_syscall_exit(regs);
 
 	step = test_thread_flag(TIF_SINGLESTEP);
 	if (step || test_thread_flag(TIF_SYSCALL_TRACE))
diff --git a/arch/microblaze/kernel/setup.c b/arch/microblaze/kernel/setup.c
index 604cd9d..d4fc1a9 100644
--- a/arch/microblaze/kernel/setup.c
+++ b/arch/microblaze/kernel/setup.c
@@ -26,6 +26,7 @@
 #include <linux/cache.h>
 #include <linux/of_platform.h>
 #include <linux/dma-mapping.h>
+#include <linux/cpu.h>
 #include <asm/cacheflush.h>
 #include <asm/entry.h>
 #include <asm/cpuinfo.h>
@@ -226,5 +227,23 @@
 
 	return 0;
 }
-
 arch_initcall(setup_bus_notifier);
+
+static DEFINE_PER_CPU(struct cpu, cpu_devices);
+
+static int __init topology_init(void)
+{
+	int i, ret;
+
+	for_each_present_cpu(i) {
+		struct cpu *c = &per_cpu(cpu_devices, i);
+
+		ret = register_cpu(c, i);
+		if (ret)
+			printk(KERN_WARNING "topology_init: register_cpu %d "
+						"failed (%d)\n", i, ret);
+	}
+
+	return 0;
+}
+subsys_initcall(topology_init);
diff --git a/arch/mips/include/asm/ptrace.h b/arch/mips/include/asm/ptrace.h
index 7b99c67..4b7f525 100644
--- a/arch/mips/include/asm/ptrace.h
+++ b/arch/mips/include/asm/ptrace.h
@@ -137,7 +137,19 @@
  */
 #define user_mode(regs) (((regs)->cp0_status & KU_MASK) == KU_USER)
 
-#define regs_return_value(_regs) ((_regs)->regs[2])
+static inline int is_syscall_success(struct pt_regs *regs)
+{
+	return !regs->regs[7];
+}
+
+static inline long regs_return_value(struct pt_regs *regs)
+{
+	if (is_syscall_success(regs))
+		return regs->regs[2];
+	else
+		return -regs->regs[2];
+}
+
 #define instruction_pointer(regs) ((regs)->cp0_epc)
 #define profile_pc(regs) instruction_pointer(regs)
 
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index 4e6ea1f..7786b60 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -560,10 +560,9 @@
 	}
 
 out:
-	if (unlikely(current->audit_context))
-		audit_syscall_entry(audit_arch(), regs->regs[2],
-				    regs->regs[4], regs->regs[5],
-				    regs->regs[6], regs->regs[7]);
+	audit_syscall_entry(audit_arch(), regs->regs[2],
+			    regs->regs[4], regs->regs[5],
+			    regs->regs[6], regs->regs[7]);
 }
 
 /*
@@ -572,9 +571,7 @@
  */
 asmlinkage void syscall_trace_leave(struct pt_regs *regs)
 {
-	if (unlikely(current->audit_context))
-		audit_syscall_exit(AUDITSC_RESULT(regs->regs[7]),
-		                   -regs->regs[2]);
+	audit_syscall_exit(regs);
 
 	if (!(current->ptrace & PT_PTRACED))
 		return;
diff --git a/arch/openrisc/boot/Makefile b/arch/openrisc/boot/Makefile
index 98ca185..0995835 100644
--- a/arch/openrisc/boot/Makefile
+++ b/arch/openrisc/boot/Makefile
@@ -11,5 +11,5 @@
 
 #DTC_FLAGS ?= -p 1024
 
-$(obj)/%.dtb: $(src)/dts/%.dts
-	$(call cmd,dtc)
+$(obj)/%.dtb: $(src)/dts/%.dts FORCE
+	$(call if_changed_dep,dtc)
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 15986e7..8844a17 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -345,8 +345,8 @@
 	$(call if_changed,wrap,treeboot-$*,,$(obj)/$*.dtb)
 
 # Rule to build device tree blobs
-$(obj)/%.dtb: $(src)/dts/%.dts
-	$(call cmd,dtc)
+$(obj)/%.dtb: $(src)/dts/%.dts FORCE
+	$(call if_changed_dep,dtc)
 
 # If there isn't a platform selected then just strip the vmlinux.
 ifeq (,$(image-y))
diff --git a/arch/powerpc/include/asm/ptrace.h b/arch/powerpc/include/asm/ptrace.h
index 48223f9..78a2051 100644
--- a/arch/powerpc/include/asm/ptrace.h
+++ b/arch/powerpc/include/asm/ptrace.h
@@ -86,7 +86,18 @@
 #define instruction_pointer(regs) ((regs)->nip)
 #define user_stack_pointer(regs) ((regs)->gpr[1])
 #define kernel_stack_pointer(regs) ((regs)->gpr[1])
-#define regs_return_value(regs) ((regs)->gpr[3])
+static inline int is_syscall_success(struct pt_regs *regs)
+{
+	return !(regs->ccr & 0x10000000);
+}
+
+static inline long regs_return_value(struct pt_regs *regs)
+{
+	if (is_syscall_success(regs))
+		return regs->gpr[3];
+	else
+		return -regs->gpr[3];
+}
 
 #ifdef CONFIG_SMP
 extern unsigned long profile_pc(struct pt_regs *regs);
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index 5de73db..5b43325 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -1724,22 +1724,20 @@
 	if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
 		trace_sys_enter(regs, regs->gpr[0]);
 
-	if (unlikely(current->audit_context)) {
 #ifdef CONFIG_PPC64
-		if (!is_32bit_task())
-			audit_syscall_entry(AUDIT_ARCH_PPC64,
-					    regs->gpr[0],
-					    regs->gpr[3], regs->gpr[4],
-					    regs->gpr[5], regs->gpr[6]);
-		else
+	if (!is_32bit_task())
+		audit_syscall_entry(AUDIT_ARCH_PPC64,
+				    regs->gpr[0],
+				    regs->gpr[3], regs->gpr[4],
+				    regs->gpr[5], regs->gpr[6]);
+	else
 #endif
-			audit_syscall_entry(AUDIT_ARCH_PPC,
-					    regs->gpr[0],
-					    regs->gpr[3] & 0xffffffff,
-					    regs->gpr[4] & 0xffffffff,
-					    regs->gpr[5] & 0xffffffff,
-					    regs->gpr[6] & 0xffffffff);
-	}
+		audit_syscall_entry(AUDIT_ARCH_PPC,
+				    regs->gpr[0],
+				    regs->gpr[3] & 0xffffffff,
+				    regs->gpr[4] & 0xffffffff,
+				    regs->gpr[5] & 0xffffffff,
+				    regs->gpr[6] & 0xffffffff);
 
 	return ret ?: regs->gpr[0];
 }
@@ -1748,9 +1746,7 @@
 {
 	int step;
 
-	if (unlikely(current->audit_context))
-		audit_syscall_exit((regs->ccr&0x10000000)?AUDITSC_FAILURE:AUDITSC_SUCCESS,
-				   regs->result);
+	audit_syscall_exit(regs);
 
 	if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
 		trace_sys_exit(regs, regs->result);
diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h
index 56da355..aeb77f0 100644
--- a/arch/s390/include/asm/ptrace.h
+++ b/arch/s390/include/asm/ptrace.h
@@ -541,9 +541,13 @@
 #define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0)
 #define instruction_pointer(regs) ((regs)->psw.addr & PSW_ADDR_INSN)
 #define user_stack_pointer(regs)((regs)->gprs[15])
-#define regs_return_value(regs)((regs)->gprs[2])
 #define profile_pc(regs) instruction_pointer(regs)
 
+static inline long regs_return_value(struct pt_regs *regs)
+{
+	return regs->gprs[2];
+}
+
 int regs_query_register_offset(const char *name);
 const char *regs_query_register_name(unsigned int offset);
 unsigned long regs_get_register(struct pt_regs *regs, unsigned int offset);
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 573bc29..9d82ed4 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -740,20 +740,17 @@
 	if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
 		trace_sys_enter(regs, regs->gprs[2]);
 
-	if (unlikely(current->audit_context))
-		audit_syscall_entry(is_compat_task() ?
-					AUDIT_ARCH_S390 : AUDIT_ARCH_S390X,
-				    regs->gprs[2], regs->orig_gpr2,
-				    regs->gprs[3], regs->gprs[4],
-				    regs->gprs[5]);
+	audit_syscall_entry(is_compat_task() ?
+				AUDIT_ARCH_S390 : AUDIT_ARCH_S390X,
+			    regs->gprs[2], regs->orig_gpr2,
+			    regs->gprs[3], regs->gprs[4],
+			    regs->gprs[5]);
 	return ret ?: regs->gprs[2];
 }
 
 asmlinkage void do_syscall_trace_exit(struct pt_regs *regs)
 {
-	if (unlikely(current->audit_context))
-		audit_syscall_exit(AUDITSC_RESULT(regs->gprs[2]),
-				   regs->gprs[2]);
+	audit_syscall_exit(regs);
 
 	if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
 		trace_sys_exit(regs, regs->gprs[2]);
diff --git a/arch/sh/include/asm/ptrace_32.h b/arch/sh/include/asm/ptrace_32.h
index 6c2239c..2d3e906 100644
--- a/arch/sh/include/asm/ptrace_32.h
+++ b/arch/sh/include/asm/ptrace_32.h
@@ -76,7 +76,10 @@
 #ifdef __KERNEL__
 
 #define MAX_REG_OFFSET		offsetof(struct pt_regs, tra)
-#define regs_return_value(_regs)	((_regs)->regs[0])
+static inline long regs_return_value(struct pt_regs *regs)
+{
+	return regs->regs[0];
+}
 
 #endif /* __KERNEL__ */
 
diff --git a/arch/sh/include/asm/ptrace_64.h b/arch/sh/include/asm/ptrace_64.h
index bf9be77..eb3fcce 100644
--- a/arch/sh/include/asm/ptrace_64.h
+++ b/arch/sh/include/asm/ptrace_64.h
@@ -13,7 +13,10 @@
 #ifdef __KERNEL__
 
 #define MAX_REG_OFFSET		offsetof(struct pt_regs, tregs[7])
-#define regs_return_value(_regs)	((_regs)->regs[3])
+static inline long regs_return_value(struct pt_regs *regs)
+{
+	return regs->regs[3];
+}
 
 #endif /* __KERNEL__ */
 
diff --git a/arch/sh/kernel/ptrace_32.c b/arch/sh/kernel/ptrace_32.c
index 92b3c27..a3e6515 100644
--- a/arch/sh/kernel/ptrace_32.c
+++ b/arch/sh/kernel/ptrace_32.c
@@ -518,10 +518,9 @@
 	if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
 		trace_sys_enter(regs, regs->regs[0]);
 
-	if (unlikely(current->audit_context))
-		audit_syscall_entry(audit_arch(), regs->regs[3],
-				    regs->regs[4], regs->regs[5],
-				    regs->regs[6], regs->regs[7]);
+	audit_syscall_entry(audit_arch(), regs->regs[3],
+			    regs->regs[4], regs->regs[5],
+			    regs->regs[6], regs->regs[7]);
 
 	return ret ?: regs->regs[0];
 }
@@ -530,9 +529,7 @@
 {
 	int step;
 
-	if (unlikely(current->audit_context))
-		audit_syscall_exit(AUDITSC_RESULT(regs->regs[0]),
-				   regs->regs[0]);
+	audit_syscall_exit(regs);
 
 	if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
 		trace_sys_exit(regs, regs->regs[0]);
diff --git a/arch/sh/kernel/ptrace_64.c b/arch/sh/kernel/ptrace_64.c
index c8f9764..3d0080b 100644
--- a/arch/sh/kernel/ptrace_64.c
+++ b/arch/sh/kernel/ptrace_64.c
@@ -536,10 +536,9 @@
 	if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
 		trace_sys_enter(regs, regs->regs[9]);
 
-	if (unlikely(current->audit_context))
-		audit_syscall_entry(audit_arch(), regs->regs[1],
-				    regs->regs[2], regs->regs[3],
-				    regs->regs[4], regs->regs[5]);
+	audit_syscall_entry(audit_arch(), regs->regs[1],
+			    regs->regs[2], regs->regs[3],
+			    regs->regs[4], regs->regs[5]);
 
 	return ret ?: regs->regs[9];
 }
@@ -548,9 +547,7 @@
 {
 	int step;
 
-	if (unlikely(current->audit_context))
-		audit_syscall_exit(AUDITSC_RESULT(regs->regs[9]),
-				   regs->regs[9]);
+	audit_syscall_exit(regs);
 
 	if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
 		trace_sys_exit(regs, regs->regs[9]);
diff --git a/arch/sparc/include/asm/ptrace.h b/arch/sparc/include/asm/ptrace.h
index a0e1bcf..c00c3b5 100644
--- a/arch/sparc/include/asm/ptrace.h
+++ b/arch/sparc/include/asm/ptrace.h
@@ -207,7 +207,15 @@
 #define instruction_pointer(regs) ((regs)->tpc)
 #define instruction_pointer_set(regs, val) ((regs)->tpc = (val))
 #define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
-#define regs_return_value(regs) ((regs)->u_regs[UREG_I0])
+static inline int is_syscall_success(struct pt_regs *regs)
+{
+	return !(regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY));
+}
+
+static inline long regs_return_value(struct pt_regs *regs)
+{
+	return regs->u_regs[UREG_I0];
+}
 #ifdef CONFIG_SMP
 extern unsigned long profile_pc(struct pt_regs *);
 #else
diff --git a/arch/sparc/kernel/ptrace_64.c b/arch/sparc/kernel/ptrace_64.c
index 96ee50a..9388844 100644
--- a/arch/sparc/kernel/ptrace_64.c
+++ b/arch/sparc/kernel/ptrace_64.c
@@ -1071,32 +1071,22 @@
 	if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
 		trace_sys_enter(regs, regs->u_regs[UREG_G1]);
 
-	if (unlikely(current->audit_context) && !ret)
-		audit_syscall_entry((test_thread_flag(TIF_32BIT) ?
-				     AUDIT_ARCH_SPARC :
-				     AUDIT_ARCH_SPARC64),
-				    regs->u_regs[UREG_G1],
-				    regs->u_regs[UREG_I0],
-				    regs->u_regs[UREG_I1],
-				    regs->u_regs[UREG_I2],
-				    regs->u_regs[UREG_I3]);
+	audit_syscall_entry((test_thread_flag(TIF_32BIT) ?
+			     AUDIT_ARCH_SPARC :
+			     AUDIT_ARCH_SPARC64),
+			    regs->u_regs[UREG_G1],
+			    regs->u_regs[UREG_I0],
+			    regs->u_regs[UREG_I1],
+			    regs->u_regs[UREG_I2],
+			    regs->u_regs[UREG_I3]);
 
 	return ret;
 }
 
 asmlinkage void syscall_trace_leave(struct pt_regs *regs)
 {
-#ifdef CONFIG_AUDITSYSCALL
-	if (unlikely(current->audit_context)) {
-		unsigned long tstate = regs->tstate;
-		int result = AUDITSC_SUCCESS;
+	audit_syscall_exit(regs);
 
-		if (unlikely(tstate & (TSTATE_XCARRY | TSTATE_ICARRY)))
-			result = AUDITSC_FAILURE;
-
-		audit_syscall_exit(result, regs->u_regs[UREG_I0]);
-	}
-#endif
 	if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
 		trace_sys_exit(regs, regs->u_regs[UREG_G1]);
 
diff --git a/arch/um/Makefile b/arch/um/Makefile
index 7730af6..28688e6 100644
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -64,7 +64,8 @@
 #This will adjust *FLAGS accordingly to the platform.
 include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS)
 
-KBUILD_CPPFLAGS += -I$(srctree)/$(HOST_DIR)/include
+KBUILD_CPPFLAGS += -I$(srctree)/$(HOST_DIR)/include \
+		   -I$(HOST_DIR)/include/generated
 
 # -Derrno=kernel_errno - This turns all kernel references to errno into
 # kernel_errno to separate them from the libc errno.  This allows -fno-common
@@ -96,6 +97,10 @@
 
 KBUILD_KCONFIG := $(HOST_DIR)/um/Kconfig
 
+archheaders:
+	$(Q)$(MAKE) -C '$(srctree)' KBUILD_SRC= \
+		ARCH=$(SUBARCH) O='$(objtree)' archheaders
+
 archprepare: include/generated/user_constants.h
 
 LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
@@ -135,7 +140,7 @@
 
 # Generated files
 
-$(HOST_DIR)/um/user-offsets.s: FORCE
+$(HOST_DIR)/um/user-offsets.s: __headers FORCE
 	$(Q)$(MAKE) $(build)=$(HOST_DIR)/um $@
 
 define filechk_gen-asm-offsets
diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c
index c9da32b..06b1903 100644
--- a/arch/um/kernel/ptrace.c
+++ b/arch/um/kernel/ptrace.c
@@ -167,17 +167,15 @@
 	int is_singlestep = (current->ptrace & PT_DTRACE) && entryexit;
 	int tracesysgood;
 
-	if (unlikely(current->audit_context)) {
-		if (!entryexit)
-			audit_syscall_entry(HOST_AUDIT_ARCH,
-					    UPT_SYSCALL_NR(regs),
-					    UPT_SYSCALL_ARG1(regs),
-					    UPT_SYSCALL_ARG2(regs),
-					    UPT_SYSCALL_ARG3(regs),
-					    UPT_SYSCALL_ARG4(regs));
-		else audit_syscall_exit(AUDITSC_RESULT(UPT_SYSCALL_RET(regs)),
-					UPT_SYSCALL_RET(regs));
-	}
+	if (!entryexit)
+		audit_syscall_entry(HOST_AUDIT_ARCH,
+				    UPT_SYSCALL_NR(regs),
+				    UPT_SYSCALL_ARG1(regs),
+				    UPT_SYSCALL_ARG2(regs),
+				    UPT_SYSCALL_ARG3(regs),
+				    UPT_SYSCALL_ARG4(regs));
+	else
+		audit_syscall_exit(regs);
 
 	/* Fake a debug trap */
 	if (is_singlestep)
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index b02e509..209ba12 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -118,6 +118,12 @@
 KBUILD_AFLAGS += $(mflags-y)
 
 ###
+# Syscall table generation
+
+archheaders:
+	$(Q)$(MAKE) $(build)=arch/x86/syscalls all
+
+###
 # Kernel objects
 
 head-y := arch/x86/kernel/head_$(BITS).o
diff --git a/arch/x86/ia32/Makefile b/arch/x86/ia32/Makefile
index 52d0ccf..455646e 100644
--- a/arch/x86/ia32/Makefile
+++ b/arch/x86/ia32/Makefile
@@ -3,6 +3,7 @@
 #
 
 obj-$(CONFIG_IA32_EMULATION) := ia32entry.o sys_ia32.o ia32_signal.o
+obj-$(CONFIG_IA32_EMULATION) += nosyscall.o syscall_ia32.o
 
 sysv-$(CONFIG_SYSVIPC) := ipc32.o
 obj-$(CONFIG_IA32_EMULATION) += $(sysv-y)
diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S
index 3e27456..e3e7340 100644
--- a/arch/x86/ia32/ia32entry.S
+++ b/arch/x86/ia32/ia32entry.S
@@ -14,6 +14,7 @@
 #include <asm/segment.h>
 #include <asm/irqflags.h>
 #include <linux/linkage.h>
+#include <linux/err.h>
 
 /* Avoid __ASSEMBLER__'ifying <linux/audit.h> just for this.  */
 #include <linux/elf-em.h>
@@ -27,8 +28,6 @@
 
 	.section .entry.text, "ax"
 
-#define IA32_NR_syscalls ((ia32_syscall_end - ia32_sys_call_table)/8)
-
 	.macro IA32_ARG_FIXUP noebp=0
 	movl	%edi,%r8d
 	.if \noebp
@@ -191,7 +190,7 @@
 	movl %ebx,%edx			/* 3rd arg: 1st syscall arg */
 	movl %eax,%esi			/* 2nd arg: syscall number */
 	movl $AUDIT_ARCH_I386,%edi	/* 1st arg: audit arch */
-	call audit_syscall_entry
+	call __audit_syscall_entry
 	movl RAX-ARGOFFSET(%rsp),%eax	/* reload syscall number */
 	cmpq $(IA32_NR_syscalls-1),%rax
 	ja ia32_badsys
@@ -208,12 +207,13 @@
 	TRACE_IRQS_ON
 	sti
 	movl %eax,%esi		/* second arg, syscall return value */
-	cmpl $0,%eax		/* is it < 0? */
-	setl %al		/* 1 if so, 0 if not */
+	cmpl $-MAX_ERRNO,%eax	/* is it an error ? */
+	jbe 1f
+	movslq %eax, %rsi	/* if error sign extend to 64 bits */
+1:	setbe %al		/* 1 if error, 0 if not */
 	movzbl %al,%edi		/* zero-extend that into %edi */
-	inc %edi /* first arg, 0->1(AUDITSC_SUCCESS), 1->2(AUDITSC_FAILURE) */
-	call audit_syscall_exit
-	movl RAX-ARGOFFSET(%rsp),%eax	/* reload syscall return value */
+	call __audit_syscall_exit
+	movq RAX-ARGOFFSET(%rsp),%rax	/* reload syscall return value */
 	movl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),%edi
 	cli
 	TRACE_IRQS_OFF
@@ -447,9 +447,6 @@
 	movq $-ENOSYS,%rax
 	jmp ia32_sysret
 
-quiet_ni_syscall:
-	movq $-ENOSYS,%rax
-	ret
 	CFI_ENDPROC
 	
 	.macro PTREGSCALL label, func, arg
@@ -494,357 +491,3 @@
 	jmp  ia32_sysret	/* misbalances the return cache */
 	CFI_ENDPROC
 END(ia32_ptregs_common)
-
-	.section .rodata,"a"
-	.align 8
-ia32_sys_call_table:
-	.quad sys_restart_syscall
-	.quad sys_exit
-	.quad stub32_fork
-	.quad sys_read
-	.quad sys_write
-	.quad compat_sys_open		/* 5 */
-	.quad sys_close
-	.quad sys32_waitpid
-	.quad sys_creat
-	.quad sys_link
-	.quad sys_unlink		/* 10 */
-	.quad stub32_execve
-	.quad sys_chdir
-	.quad compat_sys_time
-	.quad sys_mknod
-	.quad sys_chmod		/* 15 */
-	.quad sys_lchown16
-	.quad quiet_ni_syscall			/* old break syscall holder */
-	.quad sys_stat
-	.quad sys32_lseek
-	.quad sys_getpid		/* 20 */
-	.quad compat_sys_mount	/* mount  */
-	.quad sys_oldumount	/* old_umount  */
-	.quad sys_setuid16
-	.quad sys_getuid16
-	.quad compat_sys_stime	/* stime */		/* 25 */
-	.quad compat_sys_ptrace	/* ptrace */
-	.quad sys_alarm
-	.quad sys_fstat	/* (old)fstat */
-	.quad sys_pause
-	.quad compat_sys_utime	/* 30 */
-	.quad quiet_ni_syscall	/* old stty syscall holder */
-	.quad quiet_ni_syscall	/* old gtty syscall holder */
-	.quad sys_access
-	.quad sys_nice	
-	.quad quiet_ni_syscall	/* 35 */	/* old ftime syscall holder */
-	.quad sys_sync
-	.quad sys32_kill
-	.quad sys_rename
-	.quad sys_mkdir
-	.quad sys_rmdir		/* 40 */
-	.quad sys_dup
-	.quad sys_pipe
-	.quad compat_sys_times
-	.quad quiet_ni_syscall			/* old prof syscall holder */
-	.quad sys_brk		/* 45 */
-	.quad sys_setgid16
-	.quad sys_getgid16
-	.quad sys_signal
-	.quad sys_geteuid16
-	.quad sys_getegid16	/* 50 */
-	.quad sys_acct
-	.quad sys_umount			/* new_umount */
-	.quad quiet_ni_syscall			/* old lock syscall holder */
-	.quad compat_sys_ioctl
-	.quad compat_sys_fcntl64		/* 55 */
-	.quad quiet_ni_syscall			/* old mpx syscall holder */
-	.quad sys_setpgid
-	.quad quiet_ni_syscall			/* old ulimit syscall holder */
-	.quad sys_olduname
-	.quad sys_umask		/* 60 */
-	.quad sys_chroot
-	.quad compat_sys_ustat
-	.quad sys_dup2
-	.quad sys_getppid
-	.quad sys_getpgrp		/* 65 */
-	.quad sys_setsid
-	.quad sys32_sigaction
-	.quad sys_sgetmask
-	.quad sys_ssetmask
-	.quad sys_setreuid16	/* 70 */
-	.quad sys_setregid16
-	.quad sys32_sigsuspend
-	.quad compat_sys_sigpending
-	.quad sys_sethostname
-	.quad compat_sys_setrlimit	/* 75 */
-	.quad compat_sys_old_getrlimit	/* old_getrlimit */
-	.quad compat_sys_getrusage
-	.quad compat_sys_gettimeofday
-	.quad compat_sys_settimeofday
-	.quad sys_getgroups16	/* 80 */
-	.quad sys_setgroups16
-	.quad compat_sys_old_select
-	.quad sys_symlink
-	.quad sys_lstat
-	.quad sys_readlink		/* 85 */
-	.quad sys_uselib
-	.quad sys_swapon
-	.quad sys_reboot
-	.quad compat_sys_old_readdir
-	.quad sys32_mmap		/* 90 */
-	.quad sys_munmap
-	.quad sys_truncate
-	.quad sys_ftruncate
-	.quad sys_fchmod
-	.quad sys_fchown16		/* 95 */
-	.quad sys_getpriority
-	.quad sys_setpriority
-	.quad quiet_ni_syscall			/* old profil syscall holder */
-	.quad compat_sys_statfs
-	.quad compat_sys_fstatfs		/* 100 */
-	.quad sys_ioperm
-	.quad compat_sys_socketcall
-	.quad sys_syslog
-	.quad compat_sys_setitimer
-	.quad compat_sys_getitimer	/* 105 */
-	.quad compat_sys_newstat
-	.quad compat_sys_newlstat
-	.quad compat_sys_newfstat
-	.quad sys_uname
-	.quad stub32_iopl		/* 110 */
-	.quad sys_vhangup
-	.quad quiet_ni_syscall	/* old "idle" system call */
-	.quad sys32_vm86_warning	/* vm86old */ 
-	.quad compat_sys_wait4
-	.quad sys_swapoff		/* 115 */
-	.quad compat_sys_sysinfo
-	.quad sys32_ipc
-	.quad sys_fsync
-	.quad stub32_sigreturn
-	.quad stub32_clone		/* 120 */
-	.quad sys_setdomainname
-	.quad sys_newuname
-	.quad sys_modify_ldt
-	.quad compat_sys_adjtimex
-	.quad sys32_mprotect		/* 125 */
-	.quad compat_sys_sigprocmask
-	.quad quiet_ni_syscall		/* create_module */
-	.quad sys_init_module
-	.quad sys_delete_module
-	.quad quiet_ni_syscall		/* 130  get_kernel_syms */
-	.quad sys32_quotactl
-	.quad sys_getpgid
-	.quad sys_fchdir
-	.quad quiet_ni_syscall	/* bdflush */
-	.quad sys_sysfs		/* 135 */
-	.quad sys_personality
-	.quad quiet_ni_syscall	/* for afs_syscall */
-	.quad sys_setfsuid16
-	.quad sys_setfsgid16
-	.quad sys_llseek		/* 140 */
-	.quad compat_sys_getdents
-	.quad compat_sys_select
-	.quad sys_flock
-	.quad sys_msync
-	.quad compat_sys_readv		/* 145 */
-	.quad compat_sys_writev
-	.quad sys_getsid
-	.quad sys_fdatasync
-	.quad compat_sys_sysctl	/* sysctl */
-	.quad sys_mlock		/* 150 */
-	.quad sys_munlock
-	.quad sys_mlockall
-	.quad sys_munlockall
-	.quad sys_sched_setparam
-	.quad sys_sched_getparam   /* 155 */
-	.quad sys_sched_setscheduler
-	.quad sys_sched_getscheduler
-	.quad sys_sched_yield
-	.quad sys_sched_get_priority_max
-	.quad sys_sched_get_priority_min  /* 160 */
-	.quad sys32_sched_rr_get_interval
-	.quad compat_sys_nanosleep
-	.quad sys_mremap
-	.quad sys_setresuid16
-	.quad sys_getresuid16	/* 165 */
-	.quad sys32_vm86_warning	/* vm86 */ 
-	.quad quiet_ni_syscall	/* query_module */
-	.quad sys_poll
-	.quad quiet_ni_syscall /* old nfsservctl */
-	.quad sys_setresgid16	/* 170 */
-	.quad sys_getresgid16
-	.quad sys_prctl
-	.quad stub32_rt_sigreturn
-	.quad sys32_rt_sigaction
-	.quad sys32_rt_sigprocmask	/* 175 */
-	.quad sys32_rt_sigpending
-	.quad compat_sys_rt_sigtimedwait
-	.quad sys32_rt_sigqueueinfo
-	.quad sys_rt_sigsuspend
-	.quad sys32_pread		/* 180 */
-	.quad sys32_pwrite
-	.quad sys_chown16
-	.quad sys_getcwd
-	.quad sys_capget
-	.quad sys_capset
-	.quad stub32_sigaltstack
-	.quad sys32_sendfile
-	.quad quiet_ni_syscall		/* streams1 */
-	.quad quiet_ni_syscall		/* streams2 */
-	.quad stub32_vfork            /* 190 */
-	.quad compat_sys_getrlimit
-	.quad sys_mmap_pgoff
-	.quad sys32_truncate64
-	.quad sys32_ftruncate64
-	.quad sys32_stat64		/* 195 */
-	.quad sys32_lstat64
-	.quad sys32_fstat64
-	.quad sys_lchown
-	.quad sys_getuid
-	.quad sys_getgid		/* 200 */
-	.quad sys_geteuid
-	.quad sys_getegid
-	.quad sys_setreuid
-	.quad sys_setregid
-	.quad sys_getgroups	/* 205 */
-	.quad sys_setgroups
-	.quad sys_fchown
-	.quad sys_setresuid
-	.quad sys_getresuid
-	.quad sys_setresgid	/* 210 */
-	.quad sys_getresgid
-	.quad sys_chown
-	.quad sys_setuid
-	.quad sys_setgid
-	.quad sys_setfsuid		/* 215 */
-	.quad sys_setfsgid
-	.quad sys_pivot_root
-	.quad sys_mincore
-	.quad sys_madvise
-	.quad compat_sys_getdents64	/* 220 getdents64 */
-	.quad compat_sys_fcntl64	
-	.quad quiet_ni_syscall		/* tux */
-	.quad quiet_ni_syscall    	/* security */
-	.quad sys_gettid	
-	.quad sys32_readahead	/* 225 */
-	.quad sys_setxattr
-	.quad sys_lsetxattr
-	.quad sys_fsetxattr
-	.quad sys_getxattr
-	.quad sys_lgetxattr	/* 230 */
-	.quad sys_fgetxattr
-	.quad sys_listxattr
-	.quad sys_llistxattr
-	.quad sys_flistxattr
-	.quad sys_removexattr	/* 235 */
-	.quad sys_lremovexattr
-	.quad sys_fremovexattr
-	.quad sys_tkill
-	.quad sys_sendfile64 
-	.quad compat_sys_futex		/* 240 */
-	.quad compat_sys_sched_setaffinity
-	.quad compat_sys_sched_getaffinity
-	.quad sys_set_thread_area
-	.quad sys_get_thread_area
-	.quad compat_sys_io_setup	/* 245 */
-	.quad sys_io_destroy
-	.quad compat_sys_io_getevents
-	.quad compat_sys_io_submit
-	.quad sys_io_cancel
-	.quad sys32_fadvise64		/* 250 */
-	.quad quiet_ni_syscall 	/* free_huge_pages */
-	.quad sys_exit_group
-	.quad sys32_lookup_dcookie
-	.quad sys_epoll_create
-	.quad sys_epoll_ctl		/* 255 */
-	.quad sys_epoll_wait
-	.quad sys_remap_file_pages
-	.quad sys_set_tid_address
-	.quad compat_sys_timer_create
-	.quad compat_sys_timer_settime	/* 260 */
-	.quad compat_sys_timer_gettime
-	.quad sys_timer_getoverrun
-	.quad sys_timer_delete
-	.quad compat_sys_clock_settime
-	.quad compat_sys_clock_gettime	/* 265 */
-	.quad compat_sys_clock_getres
-	.quad compat_sys_clock_nanosleep
-	.quad compat_sys_statfs64
-	.quad compat_sys_fstatfs64
-	.quad sys_tgkill		/* 270 */
-	.quad compat_sys_utimes
-	.quad sys32_fadvise64_64
-	.quad quiet_ni_syscall	/* sys_vserver */
-	.quad sys_mbind
-	.quad compat_sys_get_mempolicy	/* 275 */
-	.quad sys_set_mempolicy
-	.quad compat_sys_mq_open
-	.quad sys_mq_unlink
-	.quad compat_sys_mq_timedsend
-	.quad compat_sys_mq_timedreceive	/* 280 */
-	.quad compat_sys_mq_notify
-	.quad compat_sys_mq_getsetattr
-	.quad compat_sys_kexec_load	/* reserved for kexec */
-	.quad compat_sys_waitid
-	.quad quiet_ni_syscall		/* 285: sys_altroot */
-	.quad sys_add_key
-	.quad sys_request_key
-	.quad sys_keyctl
-	.quad sys_ioprio_set
-	.quad sys_ioprio_get		/* 290 */
-	.quad sys_inotify_init
-	.quad sys_inotify_add_watch
-	.quad sys_inotify_rm_watch
-	.quad sys_migrate_pages
-	.quad compat_sys_openat		/* 295 */
-	.quad sys_mkdirat
-	.quad sys_mknodat
-	.quad sys_fchownat
-	.quad compat_sys_futimesat
-	.quad sys32_fstatat		/* 300 */
-	.quad sys_unlinkat
-	.quad sys_renameat
-	.quad sys_linkat
-	.quad sys_symlinkat
-	.quad sys_readlinkat		/* 305 */
-	.quad sys_fchmodat
-	.quad sys_faccessat
-	.quad compat_sys_pselect6
-	.quad compat_sys_ppoll
-	.quad sys_unshare		/* 310 */
-	.quad compat_sys_set_robust_list
-	.quad compat_sys_get_robust_list
-	.quad sys_splice
-	.quad sys32_sync_file_range
-	.quad sys_tee			/* 315 */
-	.quad compat_sys_vmsplice
-	.quad compat_sys_move_pages
-	.quad sys_getcpu
-	.quad sys_epoll_pwait
-	.quad compat_sys_utimensat	/* 320 */
-	.quad compat_sys_signalfd
-	.quad sys_timerfd_create
-	.quad sys_eventfd
-	.quad sys32_fallocate
-	.quad compat_sys_timerfd_settime	/* 325 */
-	.quad compat_sys_timerfd_gettime
-	.quad compat_sys_signalfd4
-	.quad sys_eventfd2
-	.quad sys_epoll_create1
-	.quad sys_dup3				/* 330 */
-	.quad sys_pipe2
-	.quad sys_inotify_init1
-	.quad compat_sys_preadv
-	.quad compat_sys_pwritev
-	.quad compat_sys_rt_tgsigqueueinfo	/* 335 */
-	.quad sys_perf_event_open
-	.quad compat_sys_recvmmsg
-	.quad sys_fanotify_init
-	.quad sys32_fanotify_mark
-	.quad sys_prlimit64		/* 340 */
-	.quad sys_name_to_handle_at
-	.quad compat_sys_open_by_handle_at
-	.quad compat_sys_clock_adjtime
-	.quad sys_syncfs
-	.quad compat_sys_sendmmsg	/* 345 */
-	.quad sys_setns
-	.quad compat_sys_process_vm_readv
-	.quad compat_sys_process_vm_writev
-ia32_syscall_end:
diff --git a/arch/x86/ia32/nosyscall.c b/arch/x86/ia32/nosyscall.c
new file mode 100644
index 0000000..51ecd5b
--- /dev/null
+++ b/arch/x86/ia32/nosyscall.c
@@ -0,0 +1,7 @@
+#include <linux/kernel.h>
+#include <linux/errno.h>
+
+long compat_ni_syscall(void)
+{
+	return -ENOSYS;
+}
diff --git a/arch/x86/ia32/syscall_ia32.c b/arch/x86/ia32/syscall_ia32.c
new file mode 100644
index 0000000..4754ba0
--- /dev/null
+++ b/arch/x86/ia32/syscall_ia32.c
@@ -0,0 +1,25 @@
+/* System call table for ia32 emulation. */
+
+#include <linux/linkage.h>
+#include <linux/sys.h>
+#include <linux/cache.h>
+#include <asm/asm-offsets.h>
+
+#define __SYSCALL_I386(nr, sym, compat) extern asmlinkage void compat(void) ;
+#include <asm/syscalls_32.h>
+#undef __SYSCALL_I386
+
+#define __SYSCALL_I386(nr, sym, compat) [nr] = compat,
+
+typedef void (*sys_call_ptr_t)(void);
+
+extern void compat_ni_syscall(void);
+
+const sys_call_ptr_t ia32_sys_call_table[__NR_ia32_syscall_max+1] = {
+	/*
+	 * Smells like a compiler bug -- it doesn't work
+	 * when the & below is removed.
+	 */
+	[0 ... __NR_ia32_syscall_max] = &compat_ni_syscall,
+#include <asm/syscalls_32.h>
+};
diff --git a/arch/x86/include/asm/Kbuild b/arch/x86/include/asm/Kbuild
index 6fa90a8..b57e6a4 100644
--- a/arch/x86/include/asm/Kbuild
+++ b/arch/x86/include/asm/Kbuild
@@ -19,7 +19,8 @@
 header-y += ptrace-abi.h
 header-y += sigcontext32.h
 header-y += ucontext.h
-header-y += unistd_32.h
-header-y += unistd_64.h
 header-y += vm86.h
 header-y += vsyscall.h
+
+genhdr-y += unistd_32.h
+genhdr-y += unistd_64.h
diff --git a/arch/x86/include/asm/ia32_unistd.h b/arch/x86/include/asm/ia32_unistd.h
index 976f6ec..b0d5716 100644
--- a/arch/x86/include/asm/ia32_unistd.h
+++ b/arch/x86/include/asm/ia32_unistd.h
@@ -2,17 +2,10 @@
 #define _ASM_X86_IA32_UNISTD_H
 
 /*
- * This file contains the system call numbers of the ia32 port,
+ * This file contains the system call numbers of the ia32 compat ABI,
  * this is for the kernel only.
- * Only add syscalls here where some part of the kernel needs to know
- * the number. This should be otherwise in sync with asm-x86/unistd_32.h. -AK
  */
-
-#define __NR_ia32_restart_syscall 0
-#define __NR_ia32_exit		  1
-#define __NR_ia32_read		  3
-#define __NR_ia32_write		  4
-#define __NR_ia32_sigreturn	119
-#define __NR_ia32_rt_sigreturn	173
+#define __SYSCALL_ia32_NR(x) (x)
+#include <asm/unistd_32_ia32.h>
 
 #endif /* _ASM_X86_IA32_UNISTD_H */
diff --git a/arch/x86/include/asm/mce.h b/arch/x86/include/asm/mce.h
index f35ce43..6aefb14 100644
--- a/arch/x86/include/asm/mce.h
+++ b/arch/x86/include/asm/mce.h
@@ -151,7 +151,7 @@
 
 void mce_setup(struct mce *m);
 void mce_log(struct mce *m);
-DECLARE_PER_CPU(struct device, mce_device);
+extern struct device *mce_device[CONFIG_NR_CPUS];
 
 /*
  * Maximum banks number.
diff --git a/arch/x86/include/asm/syscall.h b/arch/x86/include/asm/syscall.h
index c4a348f..d962e56 100644
--- a/arch/x86/include/asm/syscall.h
+++ b/arch/x86/include/asm/syscall.h
@@ -15,6 +15,7 @@
 
 #include <linux/sched.h>
 #include <linux/err.h>
+#include <asm/asm-offsets.h>	/* For NR_syscalls */
 
 extern const unsigned long sys_call_table[];
 
diff --git a/arch/x86/include/asm/unistd.h b/arch/x86/include/asm/unistd.h
index 2a58ed3..b4a3db7 100644
--- a/arch/x86/include/asm/unistd.h
+++ b/arch/x86/include/asm/unistd.h
@@ -1,13 +1,59 @@
+#ifndef _ASM_X86_UNISTD_H
+#define _ASM_X86_UNISTD_H 1
+
 #ifdef __KERNEL__
 # ifdef CONFIG_X86_32
-#  include "unistd_32.h"
+
+#  include <asm/unistd_32.h>
+#  define __ARCH_WANT_IPC_PARSE_VERSION
+#  define __ARCH_WANT_STAT64
+#  define __ARCH_WANT_SYS_OLD_MMAP
+#  define __ARCH_WANT_SYS_OLD_SELECT
+
 # else
-#  include "unistd_64.h"
+
+#  include <asm/unistd_64.h>
+#  define __ARCH_WANT_COMPAT_SYS_TIME
+
 # endif
+
+# define __ARCH_WANT_OLD_READDIR
+# define __ARCH_WANT_OLD_STAT
+# define __ARCH_WANT_SYS_ALARM
+# define __ARCH_WANT_SYS_FADVISE64
+# define __ARCH_WANT_SYS_GETHOSTNAME
+# define __ARCH_WANT_SYS_GETPGRP
+# define __ARCH_WANT_SYS_LLSEEK
+# define __ARCH_WANT_SYS_NICE
+# define __ARCH_WANT_SYS_OLDUMOUNT
+# define __ARCH_WANT_SYS_OLD_GETRLIMIT
+# define __ARCH_WANT_SYS_OLD_UNAME
+# define __ARCH_WANT_SYS_PAUSE
+# define __ARCH_WANT_SYS_RT_SIGACTION
+# define __ARCH_WANT_SYS_RT_SIGSUSPEND
+# define __ARCH_WANT_SYS_SGETMASK
+# define __ARCH_WANT_SYS_SIGNAL
+# define __ARCH_WANT_SYS_SIGPENDING
+# define __ARCH_WANT_SYS_SIGPROCMASK
+# define __ARCH_WANT_SYS_SOCKETCALL
+# define __ARCH_WANT_SYS_TIME
+# define __ARCH_WANT_SYS_UTIME
+# define __ARCH_WANT_SYS_WAITPID
+
+/*
+ * "Conditional" syscalls
+ *
+ * What we want is __attribute__((weak,alias("sys_ni_syscall"))),
+ * but it doesn't work on all toolchains, so we just do it by hand
+ */
+# define cond_syscall(x) asm(".weak\t" #x "\n\t.set\t" #x ",sys_ni_syscall")
+
 #else
 # ifdef __i386__
-#  include "unistd_32.h"
+#  include <asm/unistd_32.h>
 # else
-#  include "unistd_64.h"
+#  include <asm/unistd_64.h>
 # endif
 #endif
+
+#endif /* _ASM_X86_UNISTD_H */
diff --git a/arch/x86/include/asm/unistd_32.h b/arch/x86/include/asm/unistd_32.h
deleted file mode 100644
index 599c77d..0000000
--- a/arch/x86/include/asm/unistd_32.h
+++ /dev/null
@@ -1,401 +0,0 @@
-#ifndef _ASM_X86_UNISTD_32_H
-#define _ASM_X86_UNISTD_32_H
-
-/*
- * This file contains the system call numbers.
- */
-
-#define __NR_restart_syscall      0
-#define __NR_exit		  1
-#define __NR_fork		  2
-#define __NR_read		  3
-#define __NR_write		  4
-#define __NR_open		  5
-#define __NR_close		  6
-#define __NR_waitpid		  7
-#define __NR_creat		  8
-#define __NR_link		  9
-#define __NR_unlink		 10
-#define __NR_execve		 11
-#define __NR_chdir		 12
-#define __NR_time		 13
-#define __NR_mknod		 14
-#define __NR_chmod		 15
-#define __NR_lchown		 16
-#define __NR_break		 17
-#define __NR_oldstat		 18
-#define __NR_lseek		 19
-#define __NR_getpid		 20
-#define __NR_mount		 21
-#define __NR_umount		 22
-#define __NR_setuid		 23
-#define __NR_getuid		 24
-#define __NR_stime		 25
-#define __NR_ptrace		 26
-#define __NR_alarm		 27
-#define __NR_oldfstat		 28
-#define __NR_pause		 29
-#define __NR_utime		 30
-#define __NR_stty		 31
-#define __NR_gtty		 32
-#define __NR_access		 33
-#define __NR_nice		 34
-#define __NR_ftime		 35
-#define __NR_sync		 36
-#define __NR_kill		 37
-#define __NR_rename		 38
-#define __NR_mkdir		 39
-#define __NR_rmdir		 40
-#define __NR_dup		 41
-#define __NR_pipe		 42
-#define __NR_times		 43
-#define __NR_prof		 44
-#define __NR_brk		 45
-#define __NR_setgid		 46
-#define __NR_getgid		 47
-#define __NR_signal		 48
-#define __NR_geteuid		 49
-#define __NR_getegid		 50
-#define __NR_acct		 51
-#define __NR_umount2		 52
-#define __NR_lock		 53
-#define __NR_ioctl		 54
-#define __NR_fcntl		 55
-#define __NR_mpx		 56
-#define __NR_setpgid		 57
-#define __NR_ulimit		 58
-#define __NR_oldolduname	 59
-#define __NR_umask		 60
-#define __NR_chroot		 61
-#define __NR_ustat		 62
-#define __NR_dup2		 63
-#define __NR_getppid		 64
-#define __NR_getpgrp		 65
-#define __NR_setsid		 66
-#define __NR_sigaction		 67
-#define __NR_sgetmask		 68
-#define __NR_ssetmask		 69
-#define __NR_setreuid		 70
-#define __NR_setregid		 71
-#define __NR_sigsuspend		 72
-#define __NR_sigpending		 73
-#define __NR_sethostname	 74
-#define __NR_setrlimit		 75
-#define __NR_getrlimit		 76   /* Back compatible 2Gig limited rlimit */
-#define __NR_getrusage		 77
-#define __NR_gettimeofday	 78
-#define __NR_settimeofday	 79
-#define __NR_getgroups		 80
-#define __NR_setgroups		 81
-#define __NR_select		 82
-#define __NR_symlink		 83
-#define __NR_oldlstat		 84
-#define __NR_readlink		 85
-#define __NR_uselib		 86
-#define __NR_swapon		 87
-#define __NR_reboot		 88
-#define __NR_readdir		 89
-#define __NR_mmap		 90
-#define __NR_munmap		 91
-#define __NR_truncate		 92
-#define __NR_ftruncate		 93
-#define __NR_fchmod		 94
-#define __NR_fchown		 95
-#define __NR_getpriority	 96
-#define __NR_setpriority	 97
-#define __NR_profil		 98
-#define __NR_statfs		 99
-#define __NR_fstatfs		100
-#define __NR_ioperm		101
-#define __NR_socketcall		102
-#define __NR_syslog		103
-#define __NR_setitimer		104
-#define __NR_getitimer		105
-#define __NR_stat		106
-#define __NR_lstat		107
-#define __NR_fstat		108
-#define __NR_olduname		109
-#define __NR_iopl		110
-#define __NR_vhangup		111
-#define __NR_idle		112
-#define __NR_vm86old		113
-#define __NR_wait4		114
-#define __NR_swapoff		115
-#define __NR_sysinfo		116
-#define __NR_ipc		117
-#define __NR_fsync		118
-#define __NR_sigreturn		119
-#define __NR_clone		120
-#define __NR_setdomainname	121
-#define __NR_uname		122
-#define __NR_modify_ldt		123
-#define __NR_adjtimex		124
-#define __NR_mprotect		125
-#define __NR_sigprocmask	126
-#define __NR_create_module	127
-#define __NR_init_module	128
-#define __NR_delete_module	129
-#define __NR_get_kernel_syms	130
-#define __NR_quotactl		131
-#define __NR_getpgid		132
-#define __NR_fchdir		133
-#define __NR_bdflush		134
-#define __NR_sysfs		135
-#define __NR_personality	136
-#define __NR_afs_syscall	137 /* Syscall for Andrew File System */
-#define __NR_setfsuid		138
-#define __NR_setfsgid		139
-#define __NR__llseek		140
-#define __NR_getdents		141
-#define __NR__newselect		142
-#define __NR_flock		143
-#define __NR_msync		144
-#define __NR_readv		145
-#define __NR_writev		146
-#define __NR_getsid		147
-#define __NR_fdatasync		148
-#define __NR__sysctl		149
-#define __NR_mlock		150
-#define __NR_munlock		151
-#define __NR_mlockall		152
-#define __NR_munlockall		153
-#define __NR_sched_setparam		154
-#define __NR_sched_getparam		155
-#define __NR_sched_setscheduler		156
-#define __NR_sched_getscheduler		157
-#define __NR_sched_yield		158
-#define __NR_sched_get_priority_max	159
-#define __NR_sched_get_priority_min	160
-#define __NR_sched_rr_get_interval	161
-#define __NR_nanosleep		162
-#define __NR_mremap		163
-#define __NR_setresuid		164
-#define __NR_getresuid		165
-#define __NR_vm86		166
-#define __NR_query_module	167
-#define __NR_poll		168
-#define __NR_nfsservctl		169
-#define __NR_setresgid		170
-#define __NR_getresgid		171
-#define __NR_prctl              172
-#define __NR_rt_sigreturn	173
-#define __NR_rt_sigaction	174
-#define __NR_rt_sigprocmask	175
-#define __NR_rt_sigpending	176
-#define __NR_rt_sigtimedwait	177
-#define __NR_rt_sigqueueinfo	178
-#define __NR_rt_sigsuspend	179
-#define __NR_pread64		180
-#define __NR_pwrite64		181
-#define __NR_chown		182
-#define __NR_getcwd		183
-#define __NR_capget		184
-#define __NR_capset		185
-#define __NR_sigaltstack	186
-#define __NR_sendfile		187
-#define __NR_getpmsg		188	/* some people actually want streams */
-#define __NR_putpmsg		189	/* some people actually want streams */
-#define __NR_vfork		190
-#define __NR_ugetrlimit		191	/* SuS compliant getrlimit */
-#define __NR_mmap2		192
-#define __NR_truncate64		193
-#define __NR_ftruncate64	194
-#define __NR_stat64		195
-#define __NR_lstat64		196
-#define __NR_fstat64		197
-#define __NR_lchown32		198
-#define __NR_getuid32		199
-#define __NR_getgid32		200
-#define __NR_geteuid32		201
-#define __NR_getegid32		202
-#define __NR_setreuid32		203
-#define __NR_setregid32		204
-#define __NR_getgroups32	205
-#define __NR_setgroups32	206
-#define __NR_fchown32		207
-#define __NR_setresuid32	208
-#define __NR_getresuid32	209
-#define __NR_setresgid32	210
-#define __NR_getresgid32	211
-#define __NR_chown32		212
-#define __NR_setuid32		213
-#define __NR_setgid32		214
-#define __NR_setfsuid32		215
-#define __NR_setfsgid32		216
-#define __NR_pivot_root		217
-#define __NR_mincore		218
-#define __NR_madvise		219
-#define __NR_madvise1		219	/* delete when C lib stub is removed */
-#define __NR_getdents64		220
-#define __NR_fcntl64		221
-/* 223 is unused */
-#define __NR_gettid		224
-#define __NR_readahead		225
-#define __NR_setxattr		226
-#define __NR_lsetxattr		227
-#define __NR_fsetxattr		228
-#define __NR_getxattr		229
-#define __NR_lgetxattr		230
-#define __NR_fgetxattr		231
-#define __NR_listxattr		232
-#define __NR_llistxattr		233
-#define __NR_flistxattr		234
-#define __NR_removexattr	235
-#define __NR_lremovexattr	236
-#define __NR_fremovexattr	237
-#define __NR_tkill		238
-#define __NR_sendfile64		239
-#define __NR_futex		240
-#define __NR_sched_setaffinity	241
-#define __NR_sched_getaffinity	242
-#define __NR_set_thread_area	243
-#define __NR_get_thread_area	244
-#define __NR_io_setup		245
-#define __NR_io_destroy		246
-#define __NR_io_getevents	247
-#define __NR_io_submit		248
-#define __NR_io_cancel		249
-#define __NR_fadvise64		250
-/* 251 is available for reuse (was briefly sys_set_zone_reclaim) */
-#define __NR_exit_group		252
-#define __NR_lookup_dcookie	253
-#define __NR_epoll_create	254
-#define __NR_epoll_ctl		255
-#define __NR_epoll_wait		256
-#define __NR_remap_file_pages	257
-#define __NR_set_tid_address	258
-#define __NR_timer_create	259
-#define __NR_timer_settime	(__NR_timer_create+1)
-#define __NR_timer_gettime	(__NR_timer_create+2)
-#define __NR_timer_getoverrun	(__NR_timer_create+3)
-#define __NR_timer_delete	(__NR_timer_create+4)
-#define __NR_clock_settime	(__NR_timer_create+5)
-#define __NR_clock_gettime	(__NR_timer_create+6)
-#define __NR_clock_getres	(__NR_timer_create+7)
-#define __NR_clock_nanosleep	(__NR_timer_create+8)
-#define __NR_statfs64		268
-#define __NR_fstatfs64		269
-#define __NR_tgkill		270
-#define __NR_utimes		271
-#define __NR_fadvise64_64	272
-#define __NR_vserver		273
-#define __NR_mbind		274
-#define __NR_get_mempolicy	275
-#define __NR_set_mempolicy	276
-#define __NR_mq_open 		277
-#define __NR_mq_unlink		(__NR_mq_open+1)
-#define __NR_mq_timedsend	(__NR_mq_open+2)
-#define __NR_mq_timedreceive	(__NR_mq_open+3)
-#define __NR_mq_notify		(__NR_mq_open+4)
-#define __NR_mq_getsetattr	(__NR_mq_open+5)
-#define __NR_kexec_load		283
-#define __NR_waitid		284
-/* #define __NR_sys_setaltroot	285 */
-#define __NR_add_key		286
-#define __NR_request_key	287
-#define __NR_keyctl		288
-#define __NR_ioprio_set		289
-#define __NR_ioprio_get		290
-#define __NR_inotify_init	291
-#define __NR_inotify_add_watch	292
-#define __NR_inotify_rm_watch	293
-#define __NR_migrate_pages	294
-#define __NR_openat		295
-#define __NR_mkdirat		296
-#define __NR_mknodat		297
-#define __NR_fchownat		298
-#define __NR_futimesat		299
-#define __NR_fstatat64		300
-#define __NR_unlinkat		301
-#define __NR_renameat		302
-#define __NR_linkat		303
-#define __NR_symlinkat		304
-#define __NR_readlinkat		305
-#define __NR_fchmodat		306
-#define __NR_faccessat		307
-#define __NR_pselect6		308
-#define __NR_ppoll		309
-#define __NR_unshare		310
-#define __NR_set_robust_list	311
-#define __NR_get_robust_list	312
-#define __NR_splice		313
-#define __NR_sync_file_range	314
-#define __NR_tee		315
-#define __NR_vmsplice		316
-#define __NR_move_pages		317
-#define __NR_getcpu		318
-#define __NR_epoll_pwait	319
-#define __NR_utimensat		320
-#define __NR_signalfd		321
-#define __NR_timerfd_create	322
-#define __NR_eventfd		323
-#define __NR_fallocate		324
-#define __NR_timerfd_settime	325
-#define __NR_timerfd_gettime	326
-#define __NR_signalfd4		327
-#define __NR_eventfd2		328
-#define __NR_epoll_create1	329
-#define __NR_dup3		330
-#define __NR_pipe2		331
-#define __NR_inotify_init1	332
-#define __NR_preadv		333
-#define __NR_pwritev		334
-#define __NR_rt_tgsigqueueinfo	335
-#define __NR_perf_event_open	336
-#define __NR_recvmmsg		337
-#define __NR_fanotify_init	338
-#define __NR_fanotify_mark	339
-#define __NR_prlimit64		340
-#define __NR_name_to_handle_at	341
-#define __NR_open_by_handle_at  342
-#define __NR_clock_adjtime	343
-#define __NR_syncfs             344
-#define __NR_sendmmsg		345
-#define __NR_setns		346
-#define __NR_process_vm_readv	347
-#define __NR_process_vm_writev	348
-
-#ifdef __KERNEL__
-
-#define NR_syscalls 349
-
-#define __ARCH_WANT_IPC_PARSE_VERSION
-#define __ARCH_WANT_OLD_READDIR
-#define __ARCH_WANT_OLD_STAT
-#define __ARCH_WANT_STAT64
-#define __ARCH_WANT_SYS_ALARM
-#define __ARCH_WANT_SYS_GETHOSTNAME
-#define __ARCH_WANT_SYS_IPC
-#define __ARCH_WANT_SYS_PAUSE
-#define __ARCH_WANT_SYS_SGETMASK
-#define __ARCH_WANT_SYS_SIGNAL
-#define __ARCH_WANT_SYS_TIME
-#define __ARCH_WANT_SYS_UTIME
-#define __ARCH_WANT_SYS_WAITPID
-#define __ARCH_WANT_SYS_SOCKETCALL
-#define __ARCH_WANT_SYS_FADVISE64
-#define __ARCH_WANT_SYS_GETPGRP
-#define __ARCH_WANT_SYS_LLSEEK
-#define __ARCH_WANT_SYS_NICE
-#define __ARCH_WANT_SYS_OLD_GETRLIMIT
-#define __ARCH_WANT_SYS_OLD_UNAME
-#define __ARCH_WANT_SYS_OLD_MMAP
-#define __ARCH_WANT_SYS_OLD_SELECT
-#define __ARCH_WANT_SYS_OLDUMOUNT
-#define __ARCH_WANT_SYS_SIGPENDING
-#define __ARCH_WANT_SYS_SIGPROCMASK
-#define __ARCH_WANT_SYS_RT_SIGACTION
-#define __ARCH_WANT_SYS_RT_SIGSUSPEND
-
-/*
- * "Conditional" syscalls
- *
- * What we want is __attribute__((weak,alias("sys_ni_syscall"))),
- * but it doesn't work on all toolchains, so we just do it by hand
- */
-#ifndef cond_syscall
-#define cond_syscall(x) asm(".weak\t" #x "\n\t.set\t" #x ",sys_ni_syscall")
-#endif
-
-#endif /* __KERNEL__ */
-#endif /* _ASM_X86_UNISTD_32_H */
diff --git a/arch/x86/include/asm/unistd_64.h b/arch/x86/include/asm/unistd_64.h
deleted file mode 100644
index 0431f19..0000000
--- a/arch/x86/include/asm/unistd_64.h
+++ /dev/null
@@ -1,732 +0,0 @@
-#ifndef _ASM_X86_UNISTD_64_H
-#define _ASM_X86_UNISTD_64_H
-
-#ifndef __SYSCALL
-#define __SYSCALL(a, b)
-#endif
-
-/*
- * This file contains the system call numbers.
- *
- * Note: holes are not allowed.
- */
-
-/* at least 8 syscall per cacheline */
-#define __NR_read				0
-__SYSCALL(__NR_read, sys_read)
-#define __NR_write				1
-__SYSCALL(__NR_write, sys_write)
-#define __NR_open				2
-__SYSCALL(__NR_open, sys_open)
-#define __NR_close				3
-__SYSCALL(__NR_close, sys_close)
-#define __NR_stat				4
-__SYSCALL(__NR_stat, sys_newstat)
-#define __NR_fstat				5
-__SYSCALL(__NR_fstat, sys_newfstat)
-#define __NR_lstat				6
-__SYSCALL(__NR_lstat, sys_newlstat)
-#define __NR_poll				7
-__SYSCALL(__NR_poll, sys_poll)
-
-#define __NR_lseek				8
-__SYSCALL(__NR_lseek, sys_lseek)
-#define __NR_mmap				9
-__SYSCALL(__NR_mmap, sys_mmap)
-#define __NR_mprotect				10
-__SYSCALL(__NR_mprotect, sys_mprotect)
-#define __NR_munmap				11
-__SYSCALL(__NR_munmap, sys_munmap)
-#define __NR_brk				12
-__SYSCALL(__NR_brk, sys_brk)
-#define __NR_rt_sigaction			13
-__SYSCALL(__NR_rt_sigaction, sys_rt_sigaction)
-#define __NR_rt_sigprocmask			14
-__SYSCALL(__NR_rt_sigprocmask, sys_rt_sigprocmask)
-#define __NR_rt_sigreturn			15
-__SYSCALL(__NR_rt_sigreturn, stub_rt_sigreturn)
-
-#define __NR_ioctl				16
-__SYSCALL(__NR_ioctl, sys_ioctl)
-#define __NR_pread64				17
-__SYSCALL(__NR_pread64, sys_pread64)
-#define __NR_pwrite64				18
-__SYSCALL(__NR_pwrite64, sys_pwrite64)
-#define __NR_readv				19
-__SYSCALL(__NR_readv, sys_readv)
-#define __NR_writev				20
-__SYSCALL(__NR_writev, sys_writev)
-#define __NR_access				21
-__SYSCALL(__NR_access, sys_access)
-#define __NR_pipe				22
-__SYSCALL(__NR_pipe, sys_pipe)
-#define __NR_select				23
-__SYSCALL(__NR_select, sys_select)
-
-#define __NR_sched_yield			24
-__SYSCALL(__NR_sched_yield, sys_sched_yield)
-#define __NR_mremap				25
-__SYSCALL(__NR_mremap, sys_mremap)
-#define __NR_msync				26
-__SYSCALL(__NR_msync, sys_msync)
-#define __NR_mincore				27
-__SYSCALL(__NR_mincore, sys_mincore)
-#define __NR_madvise				28
-__SYSCALL(__NR_madvise, sys_madvise)
-#define __NR_shmget				29
-__SYSCALL(__NR_shmget, sys_shmget)
-#define __NR_shmat				30
-__SYSCALL(__NR_shmat, sys_shmat)
-#define __NR_shmctl				31
-__SYSCALL(__NR_shmctl, sys_shmctl)
-
-#define __NR_dup				32
-__SYSCALL(__NR_dup, sys_dup)
-#define __NR_dup2				33
-__SYSCALL(__NR_dup2, sys_dup2)
-#define __NR_pause				34
-__SYSCALL(__NR_pause, sys_pause)
-#define __NR_nanosleep				35
-__SYSCALL(__NR_nanosleep, sys_nanosleep)
-#define __NR_getitimer				36
-__SYSCALL(__NR_getitimer, sys_getitimer)
-#define __NR_alarm				37
-__SYSCALL(__NR_alarm, sys_alarm)
-#define __NR_setitimer				38
-__SYSCALL(__NR_setitimer, sys_setitimer)
-#define __NR_getpid				39
-__SYSCALL(__NR_getpid, sys_getpid)
-
-#define __NR_sendfile				40
-__SYSCALL(__NR_sendfile, sys_sendfile64)
-#define __NR_socket				41
-__SYSCALL(__NR_socket, sys_socket)
-#define __NR_connect				42
-__SYSCALL(__NR_connect, sys_connect)
-#define __NR_accept				43
-__SYSCALL(__NR_accept, sys_accept)
-#define __NR_sendto				44
-__SYSCALL(__NR_sendto, sys_sendto)
-#define __NR_recvfrom				45
-__SYSCALL(__NR_recvfrom, sys_recvfrom)
-#define __NR_sendmsg				46
-__SYSCALL(__NR_sendmsg, sys_sendmsg)
-#define __NR_recvmsg				47
-__SYSCALL(__NR_recvmsg, sys_recvmsg)
-
-#define __NR_shutdown				48
-__SYSCALL(__NR_shutdown, sys_shutdown)
-#define __NR_bind				49
-__SYSCALL(__NR_bind, sys_bind)
-#define __NR_listen				50
-__SYSCALL(__NR_listen, sys_listen)
-#define __NR_getsockname			51
-__SYSCALL(__NR_getsockname, sys_getsockname)
-#define __NR_getpeername			52
-__SYSCALL(__NR_getpeername, sys_getpeername)
-#define __NR_socketpair				53
-__SYSCALL(__NR_socketpair, sys_socketpair)
-#define __NR_setsockopt				54
-__SYSCALL(__NR_setsockopt, sys_setsockopt)
-#define __NR_getsockopt				55
-__SYSCALL(__NR_getsockopt, sys_getsockopt)
-
-#define __NR_clone				56
-__SYSCALL(__NR_clone, stub_clone)
-#define __NR_fork				57
-__SYSCALL(__NR_fork, stub_fork)
-#define __NR_vfork				58
-__SYSCALL(__NR_vfork, stub_vfork)
-#define __NR_execve				59
-__SYSCALL(__NR_execve, stub_execve)
-#define __NR_exit				60
-__SYSCALL(__NR_exit, sys_exit)
-#define __NR_wait4				61
-__SYSCALL(__NR_wait4, sys_wait4)
-#define __NR_kill				62
-__SYSCALL(__NR_kill, sys_kill)
-#define __NR_uname				63
-__SYSCALL(__NR_uname, sys_newuname)
-
-#define __NR_semget				64
-__SYSCALL(__NR_semget, sys_semget)
-#define __NR_semop				65
-__SYSCALL(__NR_semop, sys_semop)
-#define __NR_semctl				66
-__SYSCALL(__NR_semctl, sys_semctl)
-#define __NR_shmdt				67
-__SYSCALL(__NR_shmdt, sys_shmdt)
-#define __NR_msgget				68
-__SYSCALL(__NR_msgget, sys_msgget)
-#define __NR_msgsnd				69
-__SYSCALL(__NR_msgsnd, sys_msgsnd)
-#define __NR_msgrcv				70
-__SYSCALL(__NR_msgrcv, sys_msgrcv)
-#define __NR_msgctl				71
-__SYSCALL(__NR_msgctl, sys_msgctl)
-
-#define __NR_fcntl				72
-__SYSCALL(__NR_fcntl, sys_fcntl)
-#define __NR_flock				73
-__SYSCALL(__NR_flock, sys_flock)
-#define __NR_fsync				74
-__SYSCALL(__NR_fsync, sys_fsync)
-#define __NR_fdatasync				75
-__SYSCALL(__NR_fdatasync, sys_fdatasync)
-#define __NR_truncate				76
-__SYSCALL(__NR_truncate, sys_truncate)
-#define __NR_ftruncate				77
-__SYSCALL(__NR_ftruncate, sys_ftruncate)
-#define __NR_getdents				78
-__SYSCALL(__NR_getdents, sys_getdents)
-#define __NR_getcwd				79
-__SYSCALL(__NR_getcwd, sys_getcwd)
-
-#define __NR_chdir				80
-__SYSCALL(__NR_chdir, sys_chdir)
-#define __NR_fchdir				81
-__SYSCALL(__NR_fchdir, sys_fchdir)
-#define __NR_rename				82
-__SYSCALL(__NR_rename, sys_rename)
-#define __NR_mkdir				83
-__SYSCALL(__NR_mkdir, sys_mkdir)
-#define __NR_rmdir				84
-__SYSCALL(__NR_rmdir, sys_rmdir)
-#define __NR_creat				85
-__SYSCALL(__NR_creat, sys_creat)
-#define __NR_link				86
-__SYSCALL(__NR_link, sys_link)
-#define __NR_unlink				87
-__SYSCALL(__NR_unlink, sys_unlink)
-
-#define __NR_symlink				88
-__SYSCALL(__NR_symlink, sys_symlink)
-#define __NR_readlink				89
-__SYSCALL(__NR_readlink, sys_readlink)
-#define __NR_chmod				90
-__SYSCALL(__NR_chmod, sys_chmod)
-#define __NR_fchmod				91
-__SYSCALL(__NR_fchmod, sys_fchmod)
-#define __NR_chown				92
-__SYSCALL(__NR_chown, sys_chown)
-#define __NR_fchown				93
-__SYSCALL(__NR_fchown, sys_fchown)
-#define __NR_lchown				94
-__SYSCALL(__NR_lchown, sys_lchown)
-#define __NR_umask				95
-__SYSCALL(__NR_umask, sys_umask)
-
-#define __NR_gettimeofday			96
-__SYSCALL(__NR_gettimeofday, sys_gettimeofday)
-#define __NR_getrlimit				97
-__SYSCALL(__NR_getrlimit, sys_getrlimit)
-#define __NR_getrusage				98
-__SYSCALL(__NR_getrusage, sys_getrusage)
-#define __NR_sysinfo				99
-__SYSCALL(__NR_sysinfo, sys_sysinfo)
-#define __NR_times				100
-__SYSCALL(__NR_times, sys_times)
-#define __NR_ptrace				101
-__SYSCALL(__NR_ptrace, sys_ptrace)
-#define __NR_getuid				102
-__SYSCALL(__NR_getuid, sys_getuid)
-#define __NR_syslog				103
-__SYSCALL(__NR_syslog, sys_syslog)
-
-/* at the very end the stuff that never runs during the benchmarks */
-#define __NR_getgid				104
-__SYSCALL(__NR_getgid, sys_getgid)
-#define __NR_setuid				105
-__SYSCALL(__NR_setuid, sys_setuid)
-#define __NR_setgid				106
-__SYSCALL(__NR_setgid, sys_setgid)
-#define __NR_geteuid				107
-__SYSCALL(__NR_geteuid, sys_geteuid)
-#define __NR_getegid				108
-__SYSCALL(__NR_getegid, sys_getegid)
-#define __NR_setpgid				109
-__SYSCALL(__NR_setpgid, sys_setpgid)
-#define __NR_getppid				110
-__SYSCALL(__NR_getppid, sys_getppid)
-#define __NR_getpgrp				111
-__SYSCALL(__NR_getpgrp, sys_getpgrp)
-
-#define __NR_setsid				112
-__SYSCALL(__NR_setsid, sys_setsid)
-#define __NR_setreuid				113
-__SYSCALL(__NR_setreuid, sys_setreuid)
-#define __NR_setregid				114
-__SYSCALL(__NR_setregid, sys_setregid)
-#define __NR_getgroups				115
-__SYSCALL(__NR_getgroups, sys_getgroups)
-#define __NR_setgroups				116
-__SYSCALL(__NR_setgroups, sys_setgroups)
-#define __NR_setresuid				117
-__SYSCALL(__NR_setresuid, sys_setresuid)
-#define __NR_getresuid				118
-__SYSCALL(__NR_getresuid, sys_getresuid)
-#define __NR_setresgid				119
-__SYSCALL(__NR_setresgid, sys_setresgid)
-
-#define __NR_getresgid				120
-__SYSCALL(__NR_getresgid, sys_getresgid)
-#define __NR_getpgid				121
-__SYSCALL(__NR_getpgid, sys_getpgid)
-#define __NR_setfsuid				122
-__SYSCALL(__NR_setfsuid, sys_setfsuid)
-#define __NR_setfsgid				123
-__SYSCALL(__NR_setfsgid, sys_setfsgid)
-#define __NR_getsid				124
-__SYSCALL(__NR_getsid, sys_getsid)
-#define __NR_capget				125
-__SYSCALL(__NR_capget, sys_capget)
-#define __NR_capset				126
-__SYSCALL(__NR_capset, sys_capset)
-
-#define __NR_rt_sigpending			127
-__SYSCALL(__NR_rt_sigpending, sys_rt_sigpending)
-#define __NR_rt_sigtimedwait			128
-__SYSCALL(__NR_rt_sigtimedwait, sys_rt_sigtimedwait)
-#define __NR_rt_sigqueueinfo			129
-__SYSCALL(__NR_rt_sigqueueinfo, sys_rt_sigqueueinfo)
-#define __NR_rt_sigsuspend			130
-__SYSCALL(__NR_rt_sigsuspend, sys_rt_sigsuspend)
-#define __NR_sigaltstack			131
-__SYSCALL(__NR_sigaltstack, stub_sigaltstack)
-#define __NR_utime				132
-__SYSCALL(__NR_utime, sys_utime)
-#define __NR_mknod				133
-__SYSCALL(__NR_mknod, sys_mknod)
-
-/* Only needed for a.out */
-#define __NR_uselib				134
-__SYSCALL(__NR_uselib, sys_ni_syscall)
-#define __NR_personality			135
-__SYSCALL(__NR_personality, sys_personality)
-
-#define __NR_ustat				136
-__SYSCALL(__NR_ustat, sys_ustat)
-#define __NR_statfs				137
-__SYSCALL(__NR_statfs, sys_statfs)
-#define __NR_fstatfs				138
-__SYSCALL(__NR_fstatfs, sys_fstatfs)
-#define __NR_sysfs				139
-__SYSCALL(__NR_sysfs, sys_sysfs)
-
-#define __NR_getpriority			140
-__SYSCALL(__NR_getpriority, sys_getpriority)
-#define __NR_setpriority			141
-__SYSCALL(__NR_setpriority, sys_setpriority)
-#define __NR_sched_setparam			142
-__SYSCALL(__NR_sched_setparam, sys_sched_setparam)
-#define __NR_sched_getparam			143
-__SYSCALL(__NR_sched_getparam, sys_sched_getparam)
-#define __NR_sched_setscheduler			144
-__SYSCALL(__NR_sched_setscheduler, sys_sched_setscheduler)
-#define __NR_sched_getscheduler			145
-__SYSCALL(__NR_sched_getscheduler, sys_sched_getscheduler)
-#define __NR_sched_get_priority_max		146
-__SYSCALL(__NR_sched_get_priority_max, sys_sched_get_priority_max)
-#define __NR_sched_get_priority_min		147
-__SYSCALL(__NR_sched_get_priority_min, sys_sched_get_priority_min)
-#define __NR_sched_rr_get_interval		148
-__SYSCALL(__NR_sched_rr_get_interval, sys_sched_rr_get_interval)
-
-#define __NR_mlock				149
-__SYSCALL(__NR_mlock, sys_mlock)
-#define __NR_munlock				150
-__SYSCALL(__NR_munlock, sys_munlock)
-#define __NR_mlockall				151
-__SYSCALL(__NR_mlockall, sys_mlockall)
-#define __NR_munlockall				152
-__SYSCALL(__NR_munlockall, sys_munlockall)
-
-#define __NR_vhangup				153
-__SYSCALL(__NR_vhangup, sys_vhangup)
-
-#define __NR_modify_ldt				154
-__SYSCALL(__NR_modify_ldt, sys_modify_ldt)
-
-#define __NR_pivot_root				155
-__SYSCALL(__NR_pivot_root, sys_pivot_root)
-
-#define __NR__sysctl				156
-__SYSCALL(__NR__sysctl, sys_sysctl)
-
-#define __NR_prctl				157
-__SYSCALL(__NR_prctl, sys_prctl)
-#define __NR_arch_prctl				158
-__SYSCALL(__NR_arch_prctl, sys_arch_prctl)
-
-#define __NR_adjtimex				159
-__SYSCALL(__NR_adjtimex, sys_adjtimex)
-
-#define __NR_setrlimit				160
-__SYSCALL(__NR_setrlimit, sys_setrlimit)
-
-#define __NR_chroot				161
-__SYSCALL(__NR_chroot, sys_chroot)
-
-#define __NR_sync				162
-__SYSCALL(__NR_sync, sys_sync)
-
-#define __NR_acct				163
-__SYSCALL(__NR_acct, sys_acct)
-
-#define __NR_settimeofday			164
-__SYSCALL(__NR_settimeofday, sys_settimeofday)
-
-#define __NR_mount				165
-__SYSCALL(__NR_mount, sys_mount)
-#define __NR_umount2				166
-__SYSCALL(__NR_umount2, sys_umount)
-
-#define __NR_swapon				167
-__SYSCALL(__NR_swapon, sys_swapon)
-#define __NR_swapoff				168
-__SYSCALL(__NR_swapoff, sys_swapoff)
-
-#define __NR_reboot				169
-__SYSCALL(__NR_reboot, sys_reboot)
-
-#define __NR_sethostname			170
-__SYSCALL(__NR_sethostname, sys_sethostname)
-#define __NR_setdomainname			171
-__SYSCALL(__NR_setdomainname, sys_setdomainname)
-
-#define __NR_iopl				172
-__SYSCALL(__NR_iopl, stub_iopl)
-#define __NR_ioperm				173
-__SYSCALL(__NR_ioperm, sys_ioperm)
-
-#define __NR_create_module			174
-__SYSCALL(__NR_create_module, sys_ni_syscall)
-#define __NR_init_module			175
-__SYSCALL(__NR_init_module, sys_init_module)
-#define __NR_delete_module			176
-__SYSCALL(__NR_delete_module, sys_delete_module)
-#define __NR_get_kernel_syms			177
-__SYSCALL(__NR_get_kernel_syms, sys_ni_syscall)
-#define __NR_query_module			178
-__SYSCALL(__NR_query_module, sys_ni_syscall)
-
-#define __NR_quotactl				179
-__SYSCALL(__NR_quotactl, sys_quotactl)
-
-#define __NR_nfsservctl				180
-__SYSCALL(__NR_nfsservctl, sys_ni_syscall)
-
-/* reserved for LiS/STREAMS */
-#define __NR_getpmsg				181
-__SYSCALL(__NR_getpmsg, sys_ni_syscall)
-#define __NR_putpmsg				182
-__SYSCALL(__NR_putpmsg, sys_ni_syscall)
-
-/* reserved for AFS */
-#define __NR_afs_syscall			183
-__SYSCALL(__NR_afs_syscall, sys_ni_syscall)
-
-/* reserved for tux */
-#define __NR_tuxcall				184
-__SYSCALL(__NR_tuxcall, sys_ni_syscall)
-
-#define __NR_security				185
-__SYSCALL(__NR_security, sys_ni_syscall)
-
-#define __NR_gettid				186
-__SYSCALL(__NR_gettid, sys_gettid)
-
-#define __NR_readahead				187
-__SYSCALL(__NR_readahead, sys_readahead)
-#define __NR_setxattr				188
-__SYSCALL(__NR_setxattr, sys_setxattr)
-#define __NR_lsetxattr				189
-__SYSCALL(__NR_lsetxattr, sys_lsetxattr)
-#define __NR_fsetxattr				190
-__SYSCALL(__NR_fsetxattr, sys_fsetxattr)
-#define __NR_getxattr				191
-__SYSCALL(__NR_getxattr, sys_getxattr)
-#define __NR_lgetxattr				192
-__SYSCALL(__NR_lgetxattr, sys_lgetxattr)
-#define __NR_fgetxattr				193
-__SYSCALL(__NR_fgetxattr, sys_fgetxattr)
-#define __NR_listxattr				194
-__SYSCALL(__NR_listxattr, sys_listxattr)
-#define __NR_llistxattr				195
-__SYSCALL(__NR_llistxattr, sys_llistxattr)
-#define __NR_flistxattr				196
-__SYSCALL(__NR_flistxattr, sys_flistxattr)
-#define __NR_removexattr			197
-__SYSCALL(__NR_removexattr, sys_removexattr)
-#define __NR_lremovexattr			198
-__SYSCALL(__NR_lremovexattr, sys_lremovexattr)
-#define __NR_fremovexattr			199
-__SYSCALL(__NR_fremovexattr, sys_fremovexattr)
-#define __NR_tkill				200
-__SYSCALL(__NR_tkill, sys_tkill)
-#define __NR_time				201
-__SYSCALL(__NR_time, sys_time)
-#define __NR_futex				202
-__SYSCALL(__NR_futex, sys_futex)
-#define __NR_sched_setaffinity			203
-__SYSCALL(__NR_sched_setaffinity, sys_sched_setaffinity)
-#define __NR_sched_getaffinity			204
-__SYSCALL(__NR_sched_getaffinity, sys_sched_getaffinity)
-#define __NR_set_thread_area			205
-__SYSCALL(__NR_set_thread_area, sys_ni_syscall)	/* use arch_prctl */
-#define __NR_io_setup				206
-__SYSCALL(__NR_io_setup, sys_io_setup)
-#define __NR_io_destroy				207
-__SYSCALL(__NR_io_destroy, sys_io_destroy)
-#define __NR_io_getevents			208
-__SYSCALL(__NR_io_getevents, sys_io_getevents)
-#define __NR_io_submit				209
-__SYSCALL(__NR_io_submit, sys_io_submit)
-#define __NR_io_cancel				210
-__SYSCALL(__NR_io_cancel, sys_io_cancel)
-#define __NR_get_thread_area			211
-__SYSCALL(__NR_get_thread_area, sys_ni_syscall)	/* use arch_prctl */
-#define __NR_lookup_dcookie			212
-__SYSCALL(__NR_lookup_dcookie, sys_lookup_dcookie)
-#define __NR_epoll_create			213
-__SYSCALL(__NR_epoll_create, sys_epoll_create)
-#define __NR_epoll_ctl_old			214
-__SYSCALL(__NR_epoll_ctl_old, sys_ni_syscall)
-#define __NR_epoll_wait_old			215
-__SYSCALL(__NR_epoll_wait_old, sys_ni_syscall)
-#define __NR_remap_file_pages			216
-__SYSCALL(__NR_remap_file_pages, sys_remap_file_pages)
-#define __NR_getdents64				217
-__SYSCALL(__NR_getdents64, sys_getdents64)
-#define __NR_set_tid_address			218
-__SYSCALL(__NR_set_tid_address, sys_set_tid_address)
-#define __NR_restart_syscall			219
-__SYSCALL(__NR_restart_syscall, sys_restart_syscall)
-#define __NR_semtimedop				220
-__SYSCALL(__NR_semtimedop, sys_semtimedop)
-#define __NR_fadvise64				221
-__SYSCALL(__NR_fadvise64, sys_fadvise64)
-#define __NR_timer_create			222
-__SYSCALL(__NR_timer_create, sys_timer_create)
-#define __NR_timer_settime			223
-__SYSCALL(__NR_timer_settime, sys_timer_settime)
-#define __NR_timer_gettime			224
-__SYSCALL(__NR_timer_gettime, sys_timer_gettime)
-#define __NR_timer_getoverrun			225
-__SYSCALL(__NR_timer_getoverrun, sys_timer_getoverrun)
-#define __NR_timer_delete			226
-__SYSCALL(__NR_timer_delete, sys_timer_delete)
-#define __NR_clock_settime			227
-__SYSCALL(__NR_clock_settime, sys_clock_settime)
-#define __NR_clock_gettime			228
-__SYSCALL(__NR_clock_gettime, sys_clock_gettime)
-#define __NR_clock_getres			229
-__SYSCALL(__NR_clock_getres, sys_clock_getres)
-#define __NR_clock_nanosleep			230
-__SYSCALL(__NR_clock_nanosleep, sys_clock_nanosleep)
-#define __NR_exit_group				231
-__SYSCALL(__NR_exit_group, sys_exit_group)
-#define __NR_epoll_wait				232
-__SYSCALL(__NR_epoll_wait, sys_epoll_wait)
-#define __NR_epoll_ctl				233
-__SYSCALL(__NR_epoll_ctl, sys_epoll_ctl)
-#define __NR_tgkill				234
-__SYSCALL(__NR_tgkill, sys_tgkill)
-#define __NR_utimes				235
-__SYSCALL(__NR_utimes, sys_utimes)
-#define __NR_vserver				236
-__SYSCALL(__NR_vserver, sys_ni_syscall)
-#define __NR_mbind				237
-__SYSCALL(__NR_mbind, sys_mbind)
-#define __NR_set_mempolicy			238
-__SYSCALL(__NR_set_mempolicy, sys_set_mempolicy)
-#define __NR_get_mempolicy			239
-__SYSCALL(__NR_get_mempolicy, sys_get_mempolicy)
-#define __NR_mq_open				240
-__SYSCALL(__NR_mq_open, sys_mq_open)
-#define __NR_mq_unlink				241
-__SYSCALL(__NR_mq_unlink, sys_mq_unlink)
-#define __NR_mq_timedsend			242
-__SYSCALL(__NR_mq_timedsend, sys_mq_timedsend)
-#define __NR_mq_timedreceive			243
-__SYSCALL(__NR_mq_timedreceive, sys_mq_timedreceive)
-#define __NR_mq_notify				244
-__SYSCALL(__NR_mq_notify, sys_mq_notify)
-#define __NR_mq_getsetattr			245
-__SYSCALL(__NR_mq_getsetattr, sys_mq_getsetattr)
-#define __NR_kexec_load				246
-__SYSCALL(__NR_kexec_load, sys_kexec_load)
-#define __NR_waitid				247
-__SYSCALL(__NR_waitid, sys_waitid)
-#define __NR_add_key				248
-__SYSCALL(__NR_add_key, sys_add_key)
-#define __NR_request_key			249
-__SYSCALL(__NR_request_key, sys_request_key)
-#define __NR_keyctl				250
-__SYSCALL(__NR_keyctl, sys_keyctl)
-#define __NR_ioprio_set				251
-__SYSCALL(__NR_ioprio_set, sys_ioprio_set)
-#define __NR_ioprio_get				252
-__SYSCALL(__NR_ioprio_get, sys_ioprio_get)
-#define __NR_inotify_init			253
-__SYSCALL(__NR_inotify_init, sys_inotify_init)
-#define __NR_inotify_add_watch			254
-__SYSCALL(__NR_inotify_add_watch, sys_inotify_add_watch)
-#define __NR_inotify_rm_watch			255
-__SYSCALL(__NR_inotify_rm_watch, sys_inotify_rm_watch)
-#define __NR_migrate_pages			256
-__SYSCALL(__NR_migrate_pages, sys_migrate_pages)
-#define __NR_openat				257
-__SYSCALL(__NR_openat, sys_openat)
-#define __NR_mkdirat				258
-__SYSCALL(__NR_mkdirat, sys_mkdirat)
-#define __NR_mknodat				259
-__SYSCALL(__NR_mknodat, sys_mknodat)
-#define __NR_fchownat				260
-__SYSCALL(__NR_fchownat, sys_fchownat)
-#define __NR_futimesat				261
-__SYSCALL(__NR_futimesat, sys_futimesat)
-#define __NR_newfstatat				262
-__SYSCALL(__NR_newfstatat, sys_newfstatat)
-#define __NR_unlinkat				263
-__SYSCALL(__NR_unlinkat, sys_unlinkat)
-#define __NR_renameat				264
-__SYSCALL(__NR_renameat, sys_renameat)
-#define __NR_linkat				265
-__SYSCALL(__NR_linkat, sys_linkat)
-#define __NR_symlinkat				266
-__SYSCALL(__NR_symlinkat, sys_symlinkat)
-#define __NR_readlinkat				267
-__SYSCALL(__NR_readlinkat, sys_readlinkat)
-#define __NR_fchmodat				268
-__SYSCALL(__NR_fchmodat, sys_fchmodat)
-#define __NR_faccessat				269
-__SYSCALL(__NR_faccessat, sys_faccessat)
-#define __NR_pselect6				270
-__SYSCALL(__NR_pselect6, sys_pselect6)
-#define __NR_ppoll				271
-__SYSCALL(__NR_ppoll,	sys_ppoll)
-#define __NR_unshare				272
-__SYSCALL(__NR_unshare,	sys_unshare)
-#define __NR_set_robust_list			273
-__SYSCALL(__NR_set_robust_list, sys_set_robust_list)
-#define __NR_get_robust_list			274
-__SYSCALL(__NR_get_robust_list, sys_get_robust_list)
-#define __NR_splice				275
-__SYSCALL(__NR_splice, sys_splice)
-#define __NR_tee				276
-__SYSCALL(__NR_tee, sys_tee)
-#define __NR_sync_file_range			277
-__SYSCALL(__NR_sync_file_range, sys_sync_file_range)
-#define __NR_vmsplice				278
-__SYSCALL(__NR_vmsplice, sys_vmsplice)
-#define __NR_move_pages				279
-__SYSCALL(__NR_move_pages, sys_move_pages)
-#define __NR_utimensat				280
-__SYSCALL(__NR_utimensat, sys_utimensat)
-#define __NR_epoll_pwait			281
-__SYSCALL(__NR_epoll_pwait, sys_epoll_pwait)
-#define __NR_signalfd				282
-__SYSCALL(__NR_signalfd, sys_signalfd)
-#define __NR_timerfd_create			283
-__SYSCALL(__NR_timerfd_create, sys_timerfd_create)
-#define __NR_eventfd				284
-__SYSCALL(__NR_eventfd, sys_eventfd)
-#define __NR_fallocate				285
-__SYSCALL(__NR_fallocate, sys_fallocate)
-#define __NR_timerfd_settime			286
-__SYSCALL(__NR_timerfd_settime, sys_timerfd_settime)
-#define __NR_timerfd_gettime			287
-__SYSCALL(__NR_timerfd_gettime, sys_timerfd_gettime)
-#define __NR_accept4				288
-__SYSCALL(__NR_accept4, sys_accept4)
-#define __NR_signalfd4				289
-__SYSCALL(__NR_signalfd4, sys_signalfd4)
-#define __NR_eventfd2				290
-__SYSCALL(__NR_eventfd2, sys_eventfd2)
-#define __NR_epoll_create1			291
-__SYSCALL(__NR_epoll_create1, sys_epoll_create1)
-#define __NR_dup3				292
-__SYSCALL(__NR_dup3, sys_dup3)
-#define __NR_pipe2				293
-__SYSCALL(__NR_pipe2, sys_pipe2)
-#define __NR_inotify_init1			294
-__SYSCALL(__NR_inotify_init1, sys_inotify_init1)
-#define __NR_preadv				295
-__SYSCALL(__NR_preadv, sys_preadv)
-#define __NR_pwritev				296
-__SYSCALL(__NR_pwritev, sys_pwritev)
-#define __NR_rt_tgsigqueueinfo			297
-__SYSCALL(__NR_rt_tgsigqueueinfo, sys_rt_tgsigqueueinfo)
-#define __NR_perf_event_open			298
-__SYSCALL(__NR_perf_event_open, sys_perf_event_open)
-#define __NR_recvmmsg				299
-__SYSCALL(__NR_recvmmsg, sys_recvmmsg)
-#define __NR_fanotify_init			300
-__SYSCALL(__NR_fanotify_init, sys_fanotify_init)
-#define __NR_fanotify_mark			301
-__SYSCALL(__NR_fanotify_mark, sys_fanotify_mark)
-#define __NR_prlimit64				302
-__SYSCALL(__NR_prlimit64, sys_prlimit64)
-#define __NR_name_to_handle_at			303
-__SYSCALL(__NR_name_to_handle_at, sys_name_to_handle_at)
-#define __NR_open_by_handle_at			304
-__SYSCALL(__NR_open_by_handle_at, sys_open_by_handle_at)
-#define __NR_clock_adjtime			305
-__SYSCALL(__NR_clock_adjtime, sys_clock_adjtime)
-#define __NR_syncfs                             306
-__SYSCALL(__NR_syncfs, sys_syncfs)
-#define __NR_sendmmsg				307
-__SYSCALL(__NR_sendmmsg, sys_sendmmsg)
-#define __NR_setns				308
-__SYSCALL(__NR_setns, sys_setns)
-#define __NR_getcpu				309
-__SYSCALL(__NR_getcpu, sys_getcpu)
-#define __NR_process_vm_readv			310
-__SYSCALL(__NR_process_vm_readv, sys_process_vm_readv)
-#define __NR_process_vm_writev			311
-__SYSCALL(__NR_process_vm_writev, sys_process_vm_writev)
-
-#ifndef __NO_STUBS
-#define __ARCH_WANT_OLD_READDIR
-#define __ARCH_WANT_OLD_STAT
-#define __ARCH_WANT_SYS_ALARM
-#define __ARCH_WANT_SYS_GETHOSTNAME
-#define __ARCH_WANT_SYS_PAUSE
-#define __ARCH_WANT_SYS_SGETMASK
-#define __ARCH_WANT_SYS_SIGNAL
-#define __ARCH_WANT_SYS_UTIME
-#define __ARCH_WANT_SYS_WAITPID
-#define __ARCH_WANT_SYS_SOCKETCALL
-#define __ARCH_WANT_SYS_FADVISE64
-#define __ARCH_WANT_SYS_GETPGRP
-#define __ARCH_WANT_SYS_LLSEEK
-#define __ARCH_WANT_SYS_NICE
-#define __ARCH_WANT_SYS_OLD_GETRLIMIT
-#define __ARCH_WANT_SYS_OLD_UNAME
-#define __ARCH_WANT_SYS_OLDUMOUNT
-#define __ARCH_WANT_SYS_SIGPENDING
-#define __ARCH_WANT_SYS_SIGPROCMASK
-#define __ARCH_WANT_SYS_RT_SIGACTION
-#define __ARCH_WANT_SYS_RT_SIGSUSPEND
-#define __ARCH_WANT_SYS_TIME
-#define __ARCH_WANT_COMPAT_SYS_TIME
-#endif	/* __NO_STUBS */
-
-#ifdef __KERNEL__
-
-#ifndef COMPILE_OFFSETS
-#include <asm/asm-offsets.h>
-#define NR_syscalls (__NR_syscall_max + 1)
-#endif
-
-/*
- * "Conditional" syscalls
- *
- * What we want is __attribute__((weak,alias("sys_ni_syscall"))),
- * but it doesn't work on all toolchains, so we just do it by hand
- */
-#define cond_syscall(x) asm(".weak\t" #x "\n\t.set\t" #x ",sys_ni_syscall")
-#endif	/* __KERNEL__ */
-
-#endif /* _ASM_X86_UNISTD_64_H */
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 02b2f05..5369059 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -25,7 +25,8 @@
 obj-y			+= probe_roms.o
 obj-$(CONFIG_X86_32)	+= sys_i386_32.o i386_ksyms_32.o
 obj-$(CONFIG_X86_64)	+= sys_x86_64.o x8664_ksyms_64.o
-obj-$(CONFIG_X86_64)	+= syscall_64.o vsyscall_64.o
+obj-y			+= syscall_$(BITS).o
+obj-$(CONFIG_X86_64)	+= vsyscall_64.o
 obj-$(CONFIG_X86_64)	+= vsyscall_emu_64.o
 obj-y			+= bootflag.o e820.o
 obj-y			+= pci-dma.o quirks.o topology.o kdebugfs.o
diff --git a/arch/x86/kernel/asm-offsets_32.c b/arch/x86/kernel/asm-offsets_32.c
index 395a10e..85d98ab 100644
--- a/arch/x86/kernel/asm-offsets_32.c
+++ b/arch/x86/kernel/asm-offsets_32.c
@@ -3,6 +3,11 @@
 #include <linux/lguest.h>
 #include "../../../drivers/lguest/lg.h"
 
+#define __SYSCALL_I386(nr, sym, compat) [nr] = 1,
+static char syscalls[] = {
+#include <asm/syscalls_32.h>
+};
+
 /* workaround for a warning with -Wmissing-prototypes */
 void foo(void);
 
@@ -76,4 +81,7 @@
 	OFFSET(LGUEST_PAGES_regs_errcode, lguest_pages, regs.errcode);
 	OFFSET(LGUEST_PAGES_regs, lguest_pages, regs);
 #endif
+	BLANK();
+	DEFINE(__NR_syscall_max, sizeof(syscalls) - 1);
+	DEFINE(NR_syscalls, sizeof(syscalls));
 }
diff --git a/arch/x86/kernel/asm-offsets_64.c b/arch/x86/kernel/asm-offsets_64.c
index e72a119..834e897 100644
--- a/arch/x86/kernel/asm-offsets_64.c
+++ b/arch/x86/kernel/asm-offsets_64.c
@@ -1,11 +1,12 @@
 #include <asm/ia32.h>
 
-#define __NO_STUBS 1
-#undef __SYSCALL
-#undef _ASM_X86_UNISTD_64_H
-#define __SYSCALL(nr, sym) [nr] = 1,
-static char syscalls[] = {
-#include <asm/unistd.h>
+#define __SYSCALL_64(nr, sym, compat) [nr] = 1,
+static char syscalls_64[] = {
+#include <asm/syscalls_64.h>
+};
+#define __SYSCALL_I386(nr, sym, compat) [nr] = 1,
+static char syscalls_ia32[] = {
+#include <asm/syscalls_32.h>
 };
 
 int main(void)
@@ -72,7 +73,11 @@
 	OFFSET(TSS_ist, tss_struct, x86_tss.ist);
 	BLANK();
 
-	DEFINE(__NR_syscall_max, sizeof(syscalls) - 1);
+	DEFINE(__NR_syscall_max, sizeof(syscalls_64) - 1);
+	DEFINE(NR_syscalls, sizeof(syscalls_64));
+
+	DEFINE(__NR_ia32_syscall_max, sizeof(syscalls_ia32) - 1);
+	DEFINE(IA32_NR_syscalls, sizeof(syscalls_ia32));
 
 	return 0;
 }
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 29ba329..5a11ae2 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -1859,7 +1859,7 @@
 	.dev_name	= "machinecheck",
 };
 
-DEFINE_PER_CPU(struct device, mce_device);
+struct device *mce_device[CONFIG_NR_CPUS];
 
 __cpuinitdata
 void (*threshold_cpu_callback)(unsigned long action, unsigned int cpu);
@@ -2001,19 +2001,27 @@
 
 static cpumask_var_t mce_device_initialized;
 
+static void mce_device_release(struct device *dev)
+{
+	kfree(dev);
+}
+
 /* Per cpu device init. All of the cpus still share the same ctrl bank: */
 static __cpuinit int mce_device_create(unsigned int cpu)
 {
-	struct device *dev = &per_cpu(mce_device, cpu);
+	struct device *dev;
 	int err;
 	int i, j;
 
 	if (!mce_available(&boot_cpu_data))
 		return -EIO;
 
-	memset(dev, 0, sizeof(struct device));
+	dev = kzalloc(sizeof *dev, GFP_KERNEL);
+	if (!dev)
+		return -ENOMEM;
 	dev->id  = cpu;
 	dev->bus = &mce_subsys;
+	dev->release = &mce_device_release;
 
 	err = device_register(dev);
 	if (err)
@@ -2030,6 +2038,7 @@
 			goto error2;
 	}
 	cpumask_set_cpu(cpu, mce_device_initialized);
+	mce_device[cpu] = dev;
 
 	return 0;
 error2:
@@ -2046,7 +2055,7 @@
 
 static __cpuinit void mce_device_remove(unsigned int cpu)
 {
-	struct device *dev = &per_cpu(mce_device, cpu);
+	struct device *dev = mce_device[cpu];
 	int i;
 
 	if (!cpumask_test_cpu(cpu, mce_device_initialized))
@@ -2060,6 +2069,7 @@
 
 	device_unregister(dev);
 	cpumask_clear_cpu(cpu, mce_device_initialized);
+	mce_device[cpu] = NULL;
 }
 
 /* Make sure there are no machine checks on offlined CPUs. */
diff --git a/arch/x86/kernel/cpu/mcheck/mce_amd.c b/arch/x86/kernel/cpu/mcheck/mce_amd.c
index ba0b94a..786e76a 100644
--- a/arch/x86/kernel/cpu/mcheck/mce_amd.c
+++ b/arch/x86/kernel/cpu/mcheck/mce_amd.c
@@ -523,6 +523,7 @@
 {
 	int i, err = 0;
 	struct threshold_bank *b = NULL;
+	struct device *dev = mce_device[cpu];
 	char name[32];
 
 	sprintf(name, "threshold_bank%i", bank);
@@ -543,8 +544,7 @@
 		if (!b)
 			goto out;
 
-		err = sysfs_create_link(&per_cpu(mce_device, cpu).kobj,
-					b->kobj, name);
+		err = sysfs_create_link(&dev->kobj, b->kobj, name);
 		if (err)
 			goto out;
 
@@ -565,7 +565,7 @@
 		goto out;
 	}
 
-	b->kobj = kobject_create_and_add(name, &per_cpu(mce_device, cpu).kobj);
+	b->kobj = kobject_create_and_add(name, &dev->kobj);
 	if (!b->kobj)
 		goto out_free;
 
@@ -585,8 +585,9 @@
 		if (i == cpu)
 			continue;
 
-		err = sysfs_create_link(&per_cpu(mce_device, i).kobj,
-					b->kobj, name);
+		dev = mce_device[i];
+		if (dev)
+			err = sysfs_create_link(&dev->kobj,b->kobj, name);
 		if (err)
 			goto out;
 
@@ -649,6 +650,7 @@
 static void threshold_remove_bank(unsigned int cpu, int bank)
 {
 	struct threshold_bank *b;
+	struct device *dev;
 	char name[32];
 	int i = 0;
 
@@ -663,7 +665,7 @@
 #ifdef CONFIG_SMP
 	/* sibling symlink */
 	if (shared_bank[bank] && b->blocks->cpu != cpu) {
-		sysfs_remove_link(&per_cpu(mce_device, cpu).kobj, name);
+		sysfs_remove_link(&mce_device[cpu]->kobj, name);
 		per_cpu(threshold_banks, cpu)[bank] = NULL;
 
 		return;
@@ -675,7 +677,9 @@
 		if (i == cpu)
 			continue;
 
-		sysfs_remove_link(&per_cpu(mce_device, i).kobj, name);
+		dev = mce_device[i];
+		if (dev)
+			sysfs_remove_link(&dev->kobj, name);
 		per_cpu(threshold_banks, i)[bank] = NULL;
 	}
 
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 174d938..62d61e9 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -703,7 +703,7 @@
 }
 #endif
 
-#ifdef CONFIG_HIBERNATION
+#ifdef CONFIG_ACPI
 /**
  * Mark ACPI NVS memory region, so that we can save/restore it during
  * hibernation and the subsequent resume.
@@ -716,7 +716,7 @@
 		struct e820entry *ei = &e820.map[i];
 
 		if (ei->type == E820_NVS)
-			suspend_nvs_register(ei->addr, ei->size);
+			acpi_nvs_register(ei->addr, ei->size);
 	}
 
 	return 0;
diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
index 22d0e21..79d97e6 100644
--- a/arch/x86/kernel/entry_32.S
+++ b/arch/x86/kernel/entry_32.S
@@ -42,6 +42,7 @@
  */
 
 #include <linux/linkage.h>
+#include <linux/err.h>
 #include <asm/thread_info.h>
 #include <asm/irqflags.h>
 #include <asm/errno.h>
@@ -81,8 +82,6 @@
  * enough to patch inline, increasing performance.
  */
 
-#define nr_syscalls ((syscall_table_size)/4)
-
 #ifdef CONFIG_PREEMPT
 #define preempt_stop(clobbers)	DISABLE_INTERRUPTS(clobbers); TRACE_IRQS_OFF
 #else
@@ -423,7 +422,7 @@
 	testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%ebp)
 	jnz sysenter_audit
 sysenter_do_call:
-	cmpl $(nr_syscalls), %eax
+	cmpl $(NR_syscalls), %eax
 	jae syscall_badsys
 	call *sys_call_table(,%eax,4)
 	movl %eax,PT_EAX(%esp)
@@ -455,7 +454,7 @@
 	movl %ebx,%ecx			/* 3rd arg: 1st syscall arg */
 	movl %eax,%edx			/* 2nd arg: syscall number */
 	movl $AUDIT_ARCH_I386,%eax	/* 1st arg: audit arch */
-	call audit_syscall_entry
+	call __audit_syscall_entry
 	pushl_cfi %ebx
 	movl PT_EAX(%esp),%eax		/* reload syscall number */
 	jmp sysenter_do_call
@@ -466,11 +465,10 @@
 	TRACE_IRQS_ON
 	ENABLE_INTERRUPTS(CLBR_ANY)
 	movl %eax,%edx		/* second arg, syscall return value */
-	cmpl $0,%eax		/* is it < 0? */
-	setl %al		/* 1 if so, 0 if not */
+	cmpl $-MAX_ERRNO,%eax	/* is it an error ? */
+	setbe %al		/* 1 if so, 0 if not */
 	movzbl %al,%eax		/* zero-extend that */
-	inc %eax /* first arg, 0->1(AUDITSC_SUCCESS), 1->2(AUDITSC_FAILURE) */
-	call audit_syscall_exit
+	call __audit_syscall_exit
 	DISABLE_INTERRUPTS(CLBR_ANY)
 	TRACE_IRQS_OFF
 	movl TI_flags(%ebp), %ecx
@@ -504,7 +502,7 @@
 					# system call tracing in operation / emulation
 	testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%ebp)
 	jnz syscall_trace_entry
-	cmpl $(nr_syscalls), %eax
+	cmpl $(NR_syscalls), %eax
 	jae syscall_badsys
 syscall_call:
 	call *sys_call_table(,%eax,4)
@@ -654,7 +652,7 @@
 	movl %esp, %eax
 	call syscall_trace_enter
 	/* What it returned is what we'll actually use.  */
-	cmpl $(nr_syscalls), %eax
+	cmpl $(NR_syscalls), %eax
 	jnae syscall_call
 	jmp syscall_exit
 END(syscall_trace_entry)
@@ -694,29 +692,28 @@
  * System calls that need a pt_regs pointer.
  */
 #define PTREGSCALL0(name) \
-	ALIGN; \
-ptregs_##name: \
+ENTRY(ptregs_##name) ;  \
 	leal 4(%esp),%eax; \
-	jmp sys_##name;
+	jmp sys_##name; \
+ENDPROC(ptregs_##name)
 
 #define PTREGSCALL1(name) \
-	ALIGN; \
-ptregs_##name: \
+ENTRY(ptregs_##name) ; \
 	leal 4(%esp),%edx; \
 	movl (PT_EBX+4)(%esp),%eax; \
-	jmp sys_##name;
+	jmp sys_##name; \
+ENDPROC(ptregs_##name)
 
 #define PTREGSCALL2(name) \
-	ALIGN; \
-ptregs_##name: \
+ENTRY(ptregs_##name) ; \
 	leal 4(%esp),%ecx; \
 	movl (PT_ECX+4)(%esp),%edx; \
 	movl (PT_EBX+4)(%esp),%eax; \
-	jmp sys_##name;
+	jmp sys_##name; \
+ENDPROC(ptregs_##name)
 
 #define PTREGSCALL3(name) \
-	ALIGN; \
-ptregs_##name: \
+ENTRY(ptregs_##name) ; \
 	CFI_STARTPROC; \
 	leal 4(%esp),%eax; \
 	pushl_cfi %eax; \
@@ -741,8 +738,7 @@
 PTREGSCALL1(vm86old)
 
 /* Clone is an oddball.  The 4th arg is in %edi */
-	ALIGN;
-ptregs_clone:
+ENTRY(ptregs_clone)
 	CFI_STARTPROC
 	leal 4(%esp),%eax
 	pushl_cfi %eax
@@ -1213,11 +1209,6 @@
 	jmp *%ecx
 #endif
 
-.section .rodata,"a"
-#include "syscall_table_32.S"
-
-syscall_table_size=(.-sys_call_table)
-
 /*
  * Some functions should be protected against kprobes
  */
diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
index 940ba71..3fe8239 100644
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -55,6 +55,7 @@
 #include <asm/paravirt.h>
 #include <asm/ftrace.h>
 #include <asm/percpu.h>
+#include <linux/err.h>
 
 /* Avoid __ASSEMBLER__'ifying <linux/audit.h> just for this.  */
 #include <linux/elf-em.h>
@@ -548,7 +549,7 @@
 #ifdef CONFIG_AUDITSYSCALL
 	/*
 	 * Fast path for syscall audit without full syscall trace.
-	 * We just call audit_syscall_entry() directly, and then
+	 * We just call __audit_syscall_entry() directly, and then
 	 * jump back to the normal fast path.
 	 */
 auditsys:
@@ -558,22 +559,21 @@
 	movq %rdi,%rdx			/* 3rd arg: 1st syscall arg */
 	movq %rax,%rsi			/* 2nd arg: syscall number */
 	movl $AUDIT_ARCH_X86_64,%edi	/* 1st arg: audit arch */
-	call audit_syscall_entry
+	call __audit_syscall_entry
 	LOAD_ARGS 0		/* reload call-clobbered registers */
 	jmp system_call_fastpath
 
 	/*
-	 * Return fast path for syscall audit.  Call audit_syscall_exit()
+	 * Return fast path for syscall audit.  Call __audit_syscall_exit()
 	 * directly and then jump back to the fast path with TIF_SYSCALL_AUDIT
 	 * masked off.
 	 */
 sysret_audit:
 	movq RAX-ARGOFFSET(%rsp),%rsi	/* second arg, syscall return value */
-	cmpq $0,%rsi		/* is it < 0? */
-	setl %al		/* 1 if so, 0 if not */
+	cmpq $-MAX_ERRNO,%rsi	/* is it < -MAX_ERRNO? */
+	setbe %al		/* 1 if so, 0 if not */
 	movzbl %al,%edi		/* zero-extend that into %edi */
-	inc %edi /* first arg, 0->1(AUDITSC_SUCCESS), 1->2(AUDITSC_FAILURE) */
-	call audit_syscall_exit
+	call __audit_syscall_exit
 	movl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),%edi
 	jmp sysret_check
 #endif	/* CONFIG_AUDITSYSCALL */
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index 89a04c7..5026738 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -1392,20 +1392,18 @@
 	if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
 		trace_sys_enter(regs, regs->orig_ax);
 
-	if (unlikely(current->audit_context)) {
-		if (IS_IA32)
-			audit_syscall_entry(AUDIT_ARCH_I386,
-					    regs->orig_ax,
-					    regs->bx, regs->cx,
-					    regs->dx, regs->si);
+	if (IS_IA32)
+		audit_syscall_entry(AUDIT_ARCH_I386,
+				    regs->orig_ax,
+				    regs->bx, regs->cx,
+				    regs->dx, regs->si);
 #ifdef CONFIG_X86_64
-		else
-			audit_syscall_entry(AUDIT_ARCH_X86_64,
-					    regs->orig_ax,
-					    regs->di, regs->si,
-					    regs->dx, regs->r10);
+	else
+		audit_syscall_entry(AUDIT_ARCH_X86_64,
+				    regs->orig_ax,
+				    regs->di, regs->si,
+				    regs->dx, regs->r10);
 #endif
-	}
 
 	return ret ?: regs->orig_ax;
 }
@@ -1414,8 +1412,7 @@
 {
 	bool step;
 
-	if (unlikely(current->audit_context))
-		audit_syscall_exit(AUDITSC_RESULT(regs->ax), regs->ax);
+	audit_syscall_exit(regs);
 
 	if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
 		trace_sys_exit(regs, regs->ax);
diff --git a/arch/x86/kernel/syscall_32.c b/arch/x86/kernel/syscall_32.c
new file mode 100644
index 0000000..147fcd4
--- /dev/null
+++ b/arch/x86/kernel/syscall_32.c
@@ -0,0 +1,25 @@
+/* System call table for i386. */
+
+#include <linux/linkage.h>
+#include <linux/sys.h>
+#include <linux/cache.h>
+#include <asm/asm-offsets.h>
+
+#define __SYSCALL_I386(nr, sym, compat) extern asmlinkage void sym(void) ;
+#include <asm/syscalls_32.h>
+#undef __SYSCALL_I386
+
+#define __SYSCALL_I386(nr, sym, compat) [nr] = sym,
+
+typedef asmlinkage void (*sys_call_ptr_t)(void);
+
+extern asmlinkage void sys_ni_syscall(void);
+
+const sys_call_ptr_t sys_call_table[__NR_syscall_max+1] = {
+	/*
+	 * Smells like a compiler bug -- it doesn't work
+	 * when the & below is removed.
+	 */
+	[0 ... __NR_syscall_max] = &sys_ni_syscall,
+#include <asm/syscalls_32.h>
+};
diff --git a/arch/x86/kernel/syscall_64.c b/arch/x86/kernel/syscall_64.c
index de87d60..7ac7943 100644
--- a/arch/x86/kernel/syscall_64.c
+++ b/arch/x86/kernel/syscall_64.c
@@ -5,15 +5,11 @@
 #include <linux/cache.h>
 #include <asm/asm-offsets.h>
 
-#define __NO_STUBS
+#define __SYSCALL_64(nr, sym, compat) extern asmlinkage void sym(void) ;
+#include <asm/syscalls_64.h>
+#undef __SYSCALL_64
 
-#define __SYSCALL(nr, sym) extern asmlinkage void sym(void) ;
-#undef _ASM_X86_UNISTD_64_H
-#include <asm/unistd_64.h>
-
-#undef __SYSCALL
-#define __SYSCALL(nr, sym) [nr] = sym,
-#undef _ASM_X86_UNISTD_64_H
+#define __SYSCALL_64(nr, sym, compat) [nr] = sym,
 
 typedef void (*sys_call_ptr_t)(void);
 
@@ -21,9 +17,9 @@
 
 const sys_call_ptr_t sys_call_table[__NR_syscall_max+1] = {
 	/*
-	*Smells like a like a compiler bug -- it doesn't work
-	*when the & below is removed.
-	*/
+	 * Smells like a compiler bug -- it doesn't work
+	 * when the & below is removed.
+	 */
 	[0 ... __NR_syscall_max] = &sys_ni_syscall,
-#include <asm/unistd_64.h>
+#include <asm/syscalls_64.h>
 };
diff --git a/arch/x86/kernel/syscall_table_32.S b/arch/x86/kernel/syscall_table_32.S
deleted file mode 100644
index 9a0e312..0000000
--- a/arch/x86/kernel/syscall_table_32.S
+++ /dev/null
@@ -1,350 +0,0 @@
-ENTRY(sys_call_table)
-	.long sys_restart_syscall	/* 0 - old "setup()" system call, used for restarting */
-	.long sys_exit
-	.long ptregs_fork
-	.long sys_read
-	.long sys_write
-	.long sys_open		/* 5 */
-	.long sys_close
-	.long sys_waitpid
-	.long sys_creat
-	.long sys_link
-	.long sys_unlink	/* 10 */
-	.long ptregs_execve
-	.long sys_chdir
-	.long sys_time
-	.long sys_mknod
-	.long sys_chmod		/* 15 */
-	.long sys_lchown16
-	.long sys_ni_syscall	/* old break syscall holder */
-	.long sys_stat
-	.long sys_lseek
-	.long sys_getpid	/* 20 */
-	.long sys_mount
-	.long sys_oldumount
-	.long sys_setuid16
-	.long sys_getuid16
-	.long sys_stime		/* 25 */
-	.long sys_ptrace
-	.long sys_alarm
-	.long sys_fstat
-	.long sys_pause
-	.long sys_utime		/* 30 */
-	.long sys_ni_syscall	/* old stty syscall holder */
-	.long sys_ni_syscall	/* old gtty syscall holder */
-	.long sys_access
-	.long sys_nice
-	.long sys_ni_syscall	/* 35 - old ftime syscall holder */
-	.long sys_sync
-	.long sys_kill
-	.long sys_rename
-	.long sys_mkdir
-	.long sys_rmdir		/* 40 */
-	.long sys_dup
-	.long sys_pipe
-	.long sys_times
-	.long sys_ni_syscall	/* old prof syscall holder */
-	.long sys_brk		/* 45 */
-	.long sys_setgid16
-	.long sys_getgid16
-	.long sys_signal
-	.long sys_geteuid16
-	.long sys_getegid16	/* 50 */
-	.long sys_acct
-	.long sys_umount	/* recycled never used phys() */
-	.long sys_ni_syscall	/* old lock syscall holder */
-	.long sys_ioctl
-	.long sys_fcntl		/* 55 */
-	.long sys_ni_syscall	/* old mpx syscall holder */
-	.long sys_setpgid
-	.long sys_ni_syscall	/* old ulimit syscall holder */
-	.long sys_olduname
-	.long sys_umask		/* 60 */
-	.long sys_chroot
-	.long sys_ustat
-	.long sys_dup2
-	.long sys_getppid
-	.long sys_getpgrp	/* 65 */
-	.long sys_setsid
-	.long sys_sigaction
-	.long sys_sgetmask
-	.long sys_ssetmask
-	.long sys_setreuid16	/* 70 */
-	.long sys_setregid16
-	.long sys_sigsuspend
-	.long sys_sigpending
-	.long sys_sethostname
-	.long sys_setrlimit	/* 75 */
-	.long sys_old_getrlimit
-	.long sys_getrusage
-	.long sys_gettimeofday
-	.long sys_settimeofday
-	.long sys_getgroups16	/* 80 */
-	.long sys_setgroups16
-	.long sys_old_select
-	.long sys_symlink
-	.long sys_lstat
-	.long sys_readlink	/* 85 */
-	.long sys_uselib
-	.long sys_swapon
-	.long sys_reboot
-	.long sys_old_readdir
-	.long sys_old_mmap	/* 90 */
-	.long sys_munmap
-	.long sys_truncate
-	.long sys_ftruncate
-	.long sys_fchmod
-	.long sys_fchown16	/* 95 */
-	.long sys_getpriority
-	.long sys_setpriority
-	.long sys_ni_syscall	/* old profil syscall holder */
-	.long sys_statfs
-	.long sys_fstatfs	/* 100 */
-	.long sys_ioperm
-	.long sys_socketcall
-	.long sys_syslog
-	.long sys_setitimer
-	.long sys_getitimer	/* 105 */
-	.long sys_newstat
-	.long sys_newlstat
-	.long sys_newfstat
-	.long sys_uname
-	.long ptregs_iopl	/* 110 */
-	.long sys_vhangup
-	.long sys_ni_syscall	/* old "idle" system call */
-	.long ptregs_vm86old
-	.long sys_wait4
-	.long sys_swapoff	/* 115 */
-	.long sys_sysinfo
-	.long sys_ipc
-	.long sys_fsync
-	.long ptregs_sigreturn
-	.long ptregs_clone	/* 120 */
-	.long sys_setdomainname
-	.long sys_newuname
-	.long sys_modify_ldt
-	.long sys_adjtimex
-	.long sys_mprotect	/* 125 */
-	.long sys_sigprocmask
-	.long sys_ni_syscall	/* old "create_module" */
-	.long sys_init_module
-	.long sys_delete_module
-	.long sys_ni_syscall	/* 130:	old "get_kernel_syms" */
-	.long sys_quotactl
-	.long sys_getpgid
-	.long sys_fchdir
-	.long sys_bdflush
-	.long sys_sysfs		/* 135 */
-	.long sys_personality
-	.long sys_ni_syscall	/* reserved for afs_syscall */
-	.long sys_setfsuid16
-	.long sys_setfsgid16
-	.long sys_llseek	/* 140 */
-	.long sys_getdents
-	.long sys_select
-	.long sys_flock
-	.long sys_msync
-	.long sys_readv		/* 145 */
-	.long sys_writev
-	.long sys_getsid
-	.long sys_fdatasync
-	.long sys_sysctl
-	.long sys_mlock		/* 150 */
-	.long sys_munlock
-	.long sys_mlockall
-	.long sys_munlockall
-	.long sys_sched_setparam
-	.long sys_sched_getparam   /* 155 */
-	.long sys_sched_setscheduler
-	.long sys_sched_getscheduler
-	.long sys_sched_yield
-	.long sys_sched_get_priority_max
-	.long sys_sched_get_priority_min  /* 160 */
-	.long sys_sched_rr_get_interval
-	.long sys_nanosleep
-	.long sys_mremap
-	.long sys_setresuid16
-	.long sys_getresuid16	/* 165 */
-	.long ptregs_vm86
-	.long sys_ni_syscall	/* Old sys_query_module */
-	.long sys_poll
-	.long sys_ni_syscall	/* Old nfsservctl */
-	.long sys_setresgid16	/* 170 */
-	.long sys_getresgid16
-	.long sys_prctl
-	.long ptregs_rt_sigreturn
-	.long sys_rt_sigaction
-	.long sys_rt_sigprocmask	/* 175 */
-	.long sys_rt_sigpending
-	.long sys_rt_sigtimedwait
-	.long sys_rt_sigqueueinfo
-	.long sys_rt_sigsuspend
-	.long sys_pread64	/* 180 */
-	.long sys_pwrite64
-	.long sys_chown16
-	.long sys_getcwd
-	.long sys_capget
-	.long sys_capset	/* 185 */
-	.long ptregs_sigaltstack
-	.long sys_sendfile
-	.long sys_ni_syscall	/* reserved for streams1 */
-	.long sys_ni_syscall	/* reserved for streams2 */
-	.long ptregs_vfork	/* 190 */
-	.long sys_getrlimit
-	.long sys_mmap_pgoff
-	.long sys_truncate64
-	.long sys_ftruncate64
-	.long sys_stat64	/* 195 */
-	.long sys_lstat64
-	.long sys_fstat64
-	.long sys_lchown
-	.long sys_getuid
-	.long sys_getgid	/* 200 */
-	.long sys_geteuid
-	.long sys_getegid
-	.long sys_setreuid
-	.long sys_setregid
-	.long sys_getgroups	/* 205 */
-	.long sys_setgroups
-	.long sys_fchown
-	.long sys_setresuid
-	.long sys_getresuid
-	.long sys_setresgid	/* 210 */
-	.long sys_getresgid
-	.long sys_chown
-	.long sys_setuid
-	.long sys_setgid
-	.long sys_setfsuid	/* 215 */
-	.long sys_setfsgid
-	.long sys_pivot_root
-	.long sys_mincore
-	.long sys_madvise
-	.long sys_getdents64	/* 220 */
-	.long sys_fcntl64
-	.long sys_ni_syscall	/* reserved for TUX */
-	.long sys_ni_syscall
-	.long sys_gettid
-	.long sys_readahead	/* 225 */
-	.long sys_setxattr
-	.long sys_lsetxattr
-	.long sys_fsetxattr
-	.long sys_getxattr
-	.long sys_lgetxattr	/* 230 */
-	.long sys_fgetxattr
-	.long sys_listxattr
-	.long sys_llistxattr
-	.long sys_flistxattr
-	.long sys_removexattr	/* 235 */
-	.long sys_lremovexattr
-	.long sys_fremovexattr
-	.long sys_tkill
-	.long sys_sendfile64
-	.long sys_futex		/* 240 */
-	.long sys_sched_setaffinity
-	.long sys_sched_getaffinity
-	.long sys_set_thread_area
-	.long sys_get_thread_area
-	.long sys_io_setup	/* 245 */
-	.long sys_io_destroy
-	.long sys_io_getevents
-	.long sys_io_submit
-	.long sys_io_cancel
-	.long sys_fadvise64	/* 250 */
-	.long sys_ni_syscall
-	.long sys_exit_group
-	.long sys_lookup_dcookie
-	.long sys_epoll_create
-	.long sys_epoll_ctl	/* 255 */
-	.long sys_epoll_wait
- 	.long sys_remap_file_pages
- 	.long sys_set_tid_address
- 	.long sys_timer_create
- 	.long sys_timer_settime		/* 260 */
- 	.long sys_timer_gettime
- 	.long sys_timer_getoverrun
- 	.long sys_timer_delete
- 	.long sys_clock_settime
- 	.long sys_clock_gettime		/* 265 */
- 	.long sys_clock_getres
- 	.long sys_clock_nanosleep
-	.long sys_statfs64
-	.long sys_fstatfs64
-	.long sys_tgkill	/* 270 */
-	.long sys_utimes
- 	.long sys_fadvise64_64
-	.long sys_ni_syscall	/* sys_vserver */
-	.long sys_mbind
-	.long sys_get_mempolicy
-	.long sys_set_mempolicy
-	.long sys_mq_open
-	.long sys_mq_unlink
-	.long sys_mq_timedsend
-	.long sys_mq_timedreceive	/* 280 */
-	.long sys_mq_notify
-	.long sys_mq_getsetattr
-	.long sys_kexec_load
-	.long sys_waitid
-	.long sys_ni_syscall		/* 285 */ /* available */
-	.long sys_add_key
-	.long sys_request_key
-	.long sys_keyctl
-	.long sys_ioprio_set
-	.long sys_ioprio_get		/* 290 */
-	.long sys_inotify_init
-	.long sys_inotify_add_watch
-	.long sys_inotify_rm_watch
-	.long sys_migrate_pages
-	.long sys_openat		/* 295 */
-	.long sys_mkdirat
-	.long sys_mknodat
-	.long sys_fchownat
-	.long sys_futimesat
-	.long sys_fstatat64		/* 300 */
-	.long sys_unlinkat
-	.long sys_renameat
-	.long sys_linkat
-	.long sys_symlinkat
-	.long sys_readlinkat		/* 305 */
-	.long sys_fchmodat
-	.long sys_faccessat
-	.long sys_pselect6
-	.long sys_ppoll
-	.long sys_unshare		/* 310 */
-	.long sys_set_robust_list
-	.long sys_get_robust_list
-	.long sys_splice
-	.long sys_sync_file_range
-	.long sys_tee			/* 315 */
-	.long sys_vmsplice
-	.long sys_move_pages
-	.long sys_getcpu
-	.long sys_epoll_pwait
-	.long sys_utimensat		/* 320 */
-	.long sys_signalfd
-	.long sys_timerfd_create
-	.long sys_eventfd
-	.long sys_fallocate
-	.long sys_timerfd_settime	/* 325 */
-	.long sys_timerfd_gettime
-	.long sys_signalfd4
-	.long sys_eventfd2
-	.long sys_epoll_create1
-	.long sys_dup3			/* 330 */
-	.long sys_pipe2
-	.long sys_inotify_init1
-	.long sys_preadv
-	.long sys_pwritev
-	.long sys_rt_tgsigqueueinfo	/* 335 */
-	.long sys_perf_event_open
-	.long sys_recvmmsg
-	.long sys_fanotify_init
-	.long sys_fanotify_mark
-	.long sys_prlimit64		/* 340 */
-	.long sys_name_to_handle_at
-	.long sys_open_by_handle_at
-	.long sys_clock_adjtime
-	.long sys_syncfs
-	.long sys_sendmmsg		/* 345 */
-	.long sys_setns
-	.long sys_process_vm_readv
-	.long sys_process_vm_writev
diff --git a/arch/x86/kernel/vm86_32.c b/arch/x86/kernel/vm86_32.c
index 863f875..b466cab 100644
--- a/arch/x86/kernel/vm86_32.c
+++ b/arch/x86/kernel/vm86_32.c
@@ -335,9 +335,11 @@
 	if (info->flags & VM86_SCREEN_BITMAP)
 		mark_screen_rdonly(tsk->mm);
 
-	/*call audit_syscall_exit since we do not exit via the normal paths */
+	/*call __audit_syscall_exit since we do not exit via the normal paths */
+#ifdef CONFIG_AUDITSYSCALL
 	if (unlikely(current->audit_context))
-		audit_syscall_exit(AUDITSC_RESULT(0), 0);
+		__audit_syscall_exit(1, 0);
+#endif
 
 	__asm__ __volatile__(
 		"movl %0,%%esp\n\t"
diff --git a/arch/x86/mm/srat.c b/arch/x86/mm/srat.c
index fd61b3f..1c1c4f4 100644
--- a/arch/x86/mm/srat.c
+++ b/arch/x86/mm/srat.c
@@ -109,6 +109,8 @@
 	if ((pa->flags & ACPI_SRAT_CPU_ENABLED) == 0)
 		return;
 	pxm = pa->proximity_domain_lo;
+	if (acpi_srat_revision >= 2)
+		pxm |= *((unsigned int*)pa->proximity_domain_hi) << 8;
 	node = setup_node(pxm);
 	if (node < 0) {
 		printk(KERN_ERR "SRAT: Too many proximity domains %x\n", pxm);
@@ -160,6 +162,8 @@
 	start = ma->base_address;
 	end = start + ma->length;
 	pxm = ma->proximity_domain;
+	if (acpi_srat_revision <= 1)
+		pxm &= 0xff;
 	node = setup_node(pxm);
 	if (node < 0) {
 		printk(KERN_ERR "SRAT: Too many proximity domains.\n");
diff --git a/arch/x86/syscalls/Makefile b/arch/x86/syscalls/Makefile
new file mode 100644
index 0000000..564b247
--- /dev/null
+++ b/arch/x86/syscalls/Makefile
@@ -0,0 +1,43 @@
+out := $(obj)/../include/generated/asm
+
+# Create output directory if not already present
+_dummy := $(shell [ -d '$(out)' ] || mkdir -p '$(out)')
+
+syscall32 := $(srctree)/$(src)/syscall_32.tbl
+syscall64 := $(srctree)/$(src)/syscall_64.tbl
+
+syshdr := $(srctree)/$(src)/syscallhdr.sh
+systbl := $(srctree)/$(src)/syscalltbl.sh
+
+quiet_cmd_syshdr = SYSHDR  $@
+      cmd_syshdr = $(CONFIG_SHELL) '$(syshdr)' $< $@ \
+		   $(syshdr_abi_$(basetarget)) $(syshdr_pfx_$(basetarget))
+quiet_cmd_systbl = SYSTBL  $@
+      cmd_systbl = $(CONFIG_SHELL) '$(systbl)' $< $@
+
+syshdr_abi_unistd_32 := i386
+$(out)/unistd_32.h: $(syscall32) $(syshdr)
+	$(call if_changed,syshdr)
+
+syshdr_abi_unistd_32_ia32 := i386
+syshdr_pfx_unistd_32_ia32 := ia32_
+$(out)/unistd_32_ia32.h: $(syscall32) $(syshdr)
+	$(call if_changed,syshdr)
+
+syshdr_abi_unistd_64 := 64
+$(out)/unistd_64.h: $(syscall64) $(syshdr)
+	$(call if_changed,syshdr)
+
+$(out)/syscalls_32.h: $(syscall32) $(systbl)
+	$(call if_changed,systbl)
+$(out)/syscalls_64.h: $(syscall64) $(systbl)
+	$(call if_changed,systbl)
+
+syshdr-y			+= unistd_32.h unistd_64.h
+syshdr-y			+= syscalls_32.h
+syshdr-$(CONFIG_X86_64)		+= unistd_32_ia32.h
+syshdr-$(CONFIG_X86_64)		+= syscalls_64.h
+
+targets	+= $(syshdr-y)
+
+all: $(addprefix $(out)/,$(targets))
diff --git a/arch/x86/syscalls/syscall_32.tbl b/arch/x86/syscalls/syscall_32.tbl
new file mode 100644
index 0000000..ce98e28
--- /dev/null
+++ b/arch/x86/syscalls/syscall_32.tbl
@@ -0,0 +1,357 @@
+#
+# 32-bit system call numbers and entry vectors
+#
+# The format is:
+# <number> <abi> <name> <entry point> <compat entry point>
+#
+# The abi is always "i386" for this file.
+#
+0	i386	restart_syscall		sys_restart_syscall
+1	i386	exit			sys_exit
+2	i386	fork			ptregs_fork			stub32_fork
+3	i386	read			sys_read
+4	i386	write			sys_write
+5	i386	open			sys_open			compat_sys_open
+6	i386	close			sys_close
+7	i386	waitpid			sys_waitpid			sys32_waitpid
+8	i386	creat			sys_creat
+9	i386	link			sys_link
+10	i386	unlink			sys_unlink
+11	i386	execve			ptregs_execve			stub32_execve
+12	i386	chdir			sys_chdir
+13	i386	time			sys_time			compat_sys_time
+14	i386	mknod			sys_mknod
+15	i386	chmod			sys_chmod
+16	i386	lchown			sys_lchown16
+17	i386	break
+18	i386	oldstat			sys_stat
+19	i386	lseek			sys_lseek			sys32_lseek
+20	i386	getpid			sys_getpid
+21	i386	mount			sys_mount			compat_sys_mount
+22	i386	umount			sys_oldumount
+23	i386	setuid			sys_setuid16
+24	i386	getuid			sys_getuid16
+25	i386	stime			sys_stime			compat_sys_stime
+26	i386	ptrace			sys_ptrace			compat_sys_ptrace
+27	i386	alarm			sys_alarm
+28	i386	oldfstat		sys_fstat
+29	i386	pause			sys_pause
+30	i386	utime			sys_utime			compat_sys_utime
+31	i386	stty
+32	i386	gtty
+33	i386	access			sys_access
+34	i386	nice			sys_nice
+35	i386	ftime
+36	i386	sync			sys_sync
+37	i386	kill			sys_kill			sys32_kill
+38	i386	rename			sys_rename
+39	i386	mkdir			sys_mkdir
+40	i386	rmdir			sys_rmdir
+41	i386	dup			sys_dup
+42	i386	pipe			sys_pipe
+43	i386	times			sys_times			compat_sys_times
+44	i386	prof
+45	i386	brk			sys_brk
+46	i386	setgid			sys_setgid16
+47	i386	getgid			sys_getgid16
+48	i386	signal			sys_signal
+49	i386	geteuid			sys_geteuid16
+50	i386	getegid			sys_getegid16
+51	i386	acct			sys_acct
+52	i386	umount2			sys_umount
+53	i386	lock
+54	i386	ioctl			sys_ioctl			compat_sys_ioctl
+55	i386	fcntl			sys_fcntl			compat_sys_fcntl64
+56	i386	mpx
+57	i386	setpgid			sys_setpgid
+58	i386	ulimit
+59	i386	oldolduname		sys_olduname
+60	i386	umask			sys_umask
+61	i386	chroot			sys_chroot
+62	i386	ustat			sys_ustat			compat_sys_ustat
+63	i386	dup2			sys_dup2
+64	i386	getppid			sys_getppid
+65	i386	getpgrp			sys_getpgrp
+66	i386	setsid			sys_setsid
+67	i386	sigaction		sys_sigaction			sys32_sigaction
+68	i386	sgetmask		sys_sgetmask
+69	i386	ssetmask		sys_ssetmask
+70	i386	setreuid		sys_setreuid16
+71	i386	setregid		sys_setregid16
+72	i386	sigsuspend		sys_sigsuspend			sys32_sigsuspend
+73	i386	sigpending		sys_sigpending			compat_sys_sigpending
+74	i386	sethostname		sys_sethostname
+75	i386	setrlimit		sys_setrlimit			compat_sys_setrlimit
+76	i386	getrlimit		sys_old_getrlimit		compat_sys_old_getrlimit
+77	i386	getrusage		sys_getrusage			compat_sys_getrusage
+78	i386	gettimeofday		sys_gettimeofday		compat_sys_gettimeofday
+79	i386	settimeofday		sys_settimeofday		compat_sys_settimeofday
+80	i386	getgroups		sys_getgroups16
+81	i386	setgroups		sys_setgroups16
+82	i386	select			sys_old_select			compat_sys_old_select
+83	i386	symlink			sys_symlink
+84	i386	oldlstat		sys_lstat
+85	i386	readlink		sys_readlink
+86	i386	uselib			sys_uselib
+87	i386	swapon			sys_swapon
+88	i386	reboot			sys_reboot
+89	i386	readdir			sys_old_readdir			compat_sys_old_readdir
+90	i386	mmap			sys_old_mmap			sys32_mmap
+91	i386	munmap			sys_munmap
+92	i386	truncate		sys_truncate
+93	i386	ftruncate		sys_ftruncate
+94	i386	fchmod			sys_fchmod
+95	i386	fchown			sys_fchown16
+96	i386	getpriority		sys_getpriority
+97	i386	setpriority		sys_setpriority
+98	i386	profil
+99	i386	statfs			sys_statfs			compat_sys_statfs
+100	i386	fstatfs			sys_fstatfs			compat_sys_fstatfs
+101	i386	ioperm			sys_ioperm
+102	i386	socketcall		sys_socketcall			compat_sys_socketcall
+103	i386	syslog			sys_syslog
+104	i386	setitimer		sys_setitimer			compat_sys_setitimer
+105	i386	getitimer		sys_getitimer			compat_sys_getitimer
+106	i386	stat			sys_newstat			compat_sys_newstat
+107	i386	lstat			sys_newlstat			compat_sys_newlstat
+108	i386	fstat			sys_newfstat			compat_sys_newfstat
+109	i386	olduname		sys_uname
+110	i386	iopl			ptregs_iopl			stub32_iopl
+111	i386	vhangup			sys_vhangup
+112	i386	idle
+113	i386	vm86old			ptregs_vm86old			sys32_vm86_warning
+114	i386	wait4			sys_wait4			compat_sys_wait4
+115	i386	swapoff			sys_swapoff
+116	i386	sysinfo			sys_sysinfo			compat_sys_sysinfo
+117	i386	ipc			sys_ipc				sys32_ipc
+118	i386	fsync			sys_fsync
+119	i386	sigreturn		ptregs_sigreturn		stub32_sigreturn
+120	i386	clone			ptregs_clone			stub32_clone
+121	i386	setdomainname		sys_setdomainname
+122	i386	uname			sys_newuname
+123	i386	modify_ldt		sys_modify_ldt
+124	i386	adjtimex		sys_adjtimex			compat_sys_adjtimex
+125	i386	mprotect		sys_mprotect			sys32_mprotect
+126	i386	sigprocmask		sys_sigprocmask			compat_sys_sigprocmask
+127	i386	create_module
+128	i386	init_module		sys_init_module
+129	i386	delete_module		sys_delete_module
+130	i386	get_kernel_syms
+131	i386	quotactl		sys_quotactl			sys32_quotactl
+132	i386	getpgid			sys_getpgid
+133	i386	fchdir			sys_fchdir
+134	i386	bdflush			sys_bdflush
+135	i386	sysfs			sys_sysfs
+136	i386	personality		sys_personality
+137	i386	afs_syscall
+138	i386	setfsuid		sys_setfsuid16
+139	i386	setfsgid		sys_setfsgid16
+140	i386	_llseek			sys_llseek
+141	i386	getdents		sys_getdents			compat_sys_getdents
+142	i386	_newselect		sys_select			compat_sys_select
+143	i386	flock			sys_flock
+144	i386	msync			sys_msync
+145	i386	readv			sys_readv			compat_sys_readv
+146	i386	writev			sys_writev			compat_sys_writev
+147	i386	getsid			sys_getsid
+148	i386	fdatasync		sys_fdatasync
+149	i386	_sysctl			sys_sysctl			compat_sys_sysctl
+150	i386	mlock			sys_mlock
+151	i386	munlock			sys_munlock
+152	i386	mlockall		sys_mlockall
+153	i386	munlockall		sys_munlockall
+154	i386	sched_setparam		sys_sched_setparam
+155	i386	sched_getparam		sys_sched_getparam
+156	i386	sched_setscheduler	sys_sched_setscheduler
+157	i386	sched_getscheduler	sys_sched_getscheduler
+158	i386	sched_yield		sys_sched_yield
+159	i386	sched_get_priority_max	sys_sched_get_priority_max
+160	i386	sched_get_priority_min	sys_sched_get_priority_min
+161	i386	sched_rr_get_interval	sys_sched_rr_get_interval	sys32_sched_rr_get_interval
+162	i386	nanosleep		sys_nanosleep			compat_sys_nanosleep
+163	i386	mremap			sys_mremap
+164	i386	setresuid		sys_setresuid16
+165	i386	getresuid		sys_getresuid16
+166	i386	vm86			ptregs_vm86			sys32_vm86_warning
+167	i386	query_module
+168	i386	poll			sys_poll
+169	i386	nfsservctl
+170	i386	setresgid		sys_setresgid16
+171	i386	getresgid		sys_getresgid16
+172	i386	prctl			sys_prctl
+173	i386	rt_sigreturn		ptregs_rt_sigreturn		stub32_rt_sigreturn
+174	i386	rt_sigaction		sys_rt_sigaction		sys32_rt_sigaction
+175	i386	rt_sigprocmask		sys_rt_sigprocmask		sys32_rt_sigprocmask
+176	i386	rt_sigpending		sys_rt_sigpending		sys32_rt_sigpending
+177	i386	rt_sigtimedwait		sys_rt_sigtimedwait		compat_sys_rt_sigtimedwait
+178	i386	rt_sigqueueinfo		sys_rt_sigqueueinfo		sys32_rt_sigqueueinfo
+179	i386	rt_sigsuspend		sys_rt_sigsuspend
+180	i386	pread64			sys_pread64			sys32_pread
+181	i386	pwrite64		sys_pwrite64			sys32_pwrite
+182	i386	chown			sys_chown16
+183	i386	getcwd			sys_getcwd
+184	i386	capget			sys_capget
+185	i386	capset			sys_capset
+186	i386	sigaltstack		ptregs_sigaltstack		stub32_sigaltstack
+187	i386	sendfile		sys_sendfile			sys32_sendfile
+188	i386	getpmsg
+189	i386	putpmsg
+190	i386	vfork			ptregs_vfork			stub32_vfork
+191	i386	ugetrlimit		sys_getrlimit			compat_sys_getrlimit
+192	i386	mmap2			sys_mmap_pgoff
+193	i386	truncate64		sys_truncate64			sys32_truncate64
+194	i386	ftruncate64		sys_ftruncate64			sys32_ftruncate64
+195	i386	stat64			sys_stat64			sys32_stat64
+196	i386	lstat64			sys_lstat64			sys32_lstat64
+197	i386	fstat64			sys_fstat64			sys32_fstat64
+198	i386	lchown32		sys_lchown
+199	i386	getuid32		sys_getuid
+200	i386	getgid32		sys_getgid
+201	i386	geteuid32		sys_geteuid
+202	i386	getegid32		sys_getegid
+203	i386	setreuid32		sys_setreuid
+204	i386	setregid32		sys_setregid
+205	i386	getgroups32		sys_getgroups
+206	i386	setgroups32		sys_setgroups
+207	i386	fchown32		sys_fchown
+208	i386	setresuid32		sys_setresuid
+209	i386	getresuid32		sys_getresuid
+210	i386	setresgid32		sys_setresgid
+211	i386	getresgid32		sys_getresgid
+212	i386	chown32			sys_chown
+213	i386	setuid32		sys_setuid
+214	i386	setgid32		sys_setgid
+215	i386	setfsuid32		sys_setfsuid
+216	i386	setfsgid32		sys_setfsgid
+217	i386	pivot_root		sys_pivot_root
+218	i386	mincore			sys_mincore
+219	i386	madvise			sys_madvise
+220	i386	getdents64		sys_getdents64			compat_sys_getdents64
+221	i386	fcntl64			sys_fcntl64			compat_sys_fcntl64
+# 222 is unused
+# 223 is unused
+224	i386	gettid			sys_gettid
+225	i386	readahead		sys_readahead			sys32_readahead
+226	i386	setxattr		sys_setxattr
+227	i386	lsetxattr		sys_lsetxattr
+228	i386	fsetxattr		sys_fsetxattr
+229	i386	getxattr		sys_getxattr
+230	i386	lgetxattr		sys_lgetxattr
+231	i386	fgetxattr		sys_fgetxattr
+232	i386	listxattr		sys_listxattr
+233	i386	llistxattr		sys_llistxattr
+234	i386	flistxattr		sys_flistxattr
+235	i386	removexattr		sys_removexattr
+236	i386	lremovexattr		sys_lremovexattr
+237	i386	fremovexattr		sys_fremovexattr
+238	i386	tkill			sys_tkill
+239	i386	sendfile64		sys_sendfile64
+240	i386	futex			sys_futex			compat_sys_futex
+241	i386	sched_setaffinity	sys_sched_setaffinity		compat_sys_sched_setaffinity
+242	i386	sched_getaffinity	sys_sched_getaffinity		compat_sys_sched_getaffinity
+243	i386	set_thread_area		sys_set_thread_area
+244	i386	get_thread_area		sys_get_thread_area
+245	i386	io_setup		sys_io_setup			compat_sys_io_setup
+246	i386	io_destroy		sys_io_destroy
+247	i386	io_getevents		sys_io_getevents		compat_sys_io_getevents
+248	i386	io_submit		sys_io_submit			compat_sys_io_submit
+249	i386	io_cancel		sys_io_cancel
+250	i386	fadvise64		sys_fadvise64			sys32_fadvise64
+# 251 is available for reuse (was briefly sys_set_zone_reclaim)
+252	i386	exit_group		sys_exit_group
+253	i386	lookup_dcookie		sys_lookup_dcookie		sys32_lookup_dcookie
+254	i386	epoll_create		sys_epoll_create
+255	i386	epoll_ctl		sys_epoll_ctl
+256	i386	epoll_wait		sys_epoll_wait
+257	i386	remap_file_pages	sys_remap_file_pages
+258	i386	set_tid_address		sys_set_tid_address
+259	i386	timer_create		sys_timer_create		compat_sys_timer_create
+260	i386	timer_settime		sys_timer_settime		compat_sys_timer_settime
+261	i386	timer_gettime		sys_timer_gettime		compat_sys_timer_gettime
+262	i386	timer_getoverrun	sys_timer_getoverrun
+263	i386	timer_delete		sys_timer_delete
+264	i386	clock_settime		sys_clock_settime		compat_sys_clock_settime
+265	i386	clock_gettime		sys_clock_gettime		compat_sys_clock_gettime
+266	i386	clock_getres		sys_clock_getres		compat_sys_clock_getres
+267	i386	clock_nanosleep		sys_clock_nanosleep		compat_sys_clock_nanosleep
+268	i386	statfs64		sys_statfs64			compat_sys_statfs64
+269	i386	fstatfs64		sys_fstatfs64			compat_sys_fstatfs64
+270	i386	tgkill			sys_tgkill
+271	i386	utimes			sys_utimes			compat_sys_utimes
+272	i386	fadvise64_64		sys_fadvise64_64		sys32_fadvise64_64
+273	i386	vserver
+274	i386	mbind			sys_mbind
+275	i386	get_mempolicy		sys_get_mempolicy		compat_sys_get_mempolicy
+276	i386	set_mempolicy		sys_set_mempolicy
+277	i386	mq_open			sys_mq_open			compat_sys_mq_open
+278	i386	mq_unlink		sys_mq_unlink
+279	i386	mq_timedsend		sys_mq_timedsend		compat_sys_mq_timedsend
+280	i386	mq_timedreceive		sys_mq_timedreceive		compat_sys_mq_timedreceive
+281	i386	mq_notify		sys_mq_notify			compat_sys_mq_notify
+282	i386	mq_getsetaddr		sys_mq_getsetattr		compat_sys_mq_getsetattr
+283	i386	kexec_load		sys_kexec_load			compat_sys_kexec_load
+284	i386	waitid			sys_waitid			compat_sys_waitid
+# 285 sys_setaltroot
+286	i386	add_key			sys_add_key
+287	i386	request_key		sys_request_key
+288	i386	keyctl			sys_keyctl
+289	i386	ioprio_set		sys_ioprio_set
+290	i386	ioprio_get		sys_ioprio_get
+291	i386	inotify_init		sys_inotify_init
+292	i386	inotify_add_watch	sys_inotify_add_watch
+293	i386	inotify_rm_watch	sys_inotify_rm_watch
+294	i386	migrate_pages		sys_migrate_pages
+295	i386	openat			sys_openat			compat_sys_openat
+296	i386	mkdirat			sys_mkdirat
+297	i386	mknodat			sys_mknodat
+298	i386	fchownat		sys_fchownat
+299	i386	futimesat		sys_futimesat			compat_sys_futimesat
+300	i386	fstatat64		sys_fstatat64			sys32_fstatat
+301	i386	unlinkat		sys_unlinkat
+302	i386	renameat		sys_renameat
+303	i386	linkat			sys_linkat
+304	i386	symlinkat		sys_symlinkat
+305	i386	readlinkat		sys_readlinkat
+306	i386	fchmodat		sys_fchmodat
+307	i386	faccessat		sys_faccessat
+308	i386	pselect6		sys_pselect6			compat_sys_pselect6
+309	i386	ppoll			sys_ppoll			compat_sys_ppoll
+310	i386	unshare			sys_unshare
+311	i386	set_robust_list		sys_set_robust_list		compat_sys_set_robust_list
+312	i386	get_robust_list		sys_get_robust_list		compat_sys_get_robust_list
+313	i386	splice			sys_splice
+314	i386	sync_file_range		sys_sync_file_range		sys32_sync_file_range
+315	i386	tee			sys_tee
+316	i386	vmsplice		sys_vmsplice			compat_sys_vmsplice
+317	i386	move_pages		sys_move_pages			compat_sys_move_pages
+318	i386	getcpu			sys_getcpu
+319	i386	epoll_pwait		sys_epoll_pwait
+320	i386	utimensat		sys_utimensat			compat_sys_utimensat
+321	i386	signalfd		sys_signalfd			compat_sys_signalfd
+322	i386	timerfd_create		sys_timerfd_create
+323	i386	eventfd			sys_eventfd
+324	i386	fallocate		sys_fallocate			sys32_fallocate
+325	i386	timerfd_settime		sys_timerfd_settime		compat_sys_timerfd_settime
+326	i386	timerfd_gettime		sys_timerfd_gettime		compat_sys_timerfd_gettime
+327	i386	signalfd4		sys_signalfd4			compat_sys_signalfd4
+328	i386	eventfd2		sys_eventfd2
+329	i386	epoll_create1		sys_epoll_create1
+330	i386	dup3			sys_dup3
+331	i386	pipe2			sys_pipe2
+332	i386	inotify_init1		sys_inotify_init1
+333	i386	preadv			sys_preadv			compat_sys_preadv
+334	i386	pwritev			sys_pwritev			compat_sys_pwritev
+335	i386	rt_tgsigqueueinfo	sys_rt_tgsigqueueinfo		compat_sys_rt_tgsigqueueinfo
+336	i386	perf_event_open		sys_perf_event_open
+337	i386	recvmmsg		sys_recvmmsg			compat_sys_recvmmsg
+338	i386	fanotify_init		sys_fanotify_init
+339	i386	fanotify_mark		sys_fanotify_mark		sys32_fanotify_mark
+340	i386	prlimit64		sys_prlimit64
+341	i386	name_to_handle_at	sys_name_to_handle_at
+342	i386	open_by_handle_at	sys_open_by_handle_at		compat_sys_open_by_handle_at
+343	i386	clock_adjtime		sys_clock_adjtime		compat_sys_clock_adjtime
+344	i386	syncfs			sys_syncfs
+345	i386	sendmmsg		sys_sendmmsg			compat_sys_sendmmsg
+346	i386	setns			sys_setns
+347	i386	process_vm_readv	sys_process_vm_readv		compat_sys_process_vm_readv
+348	i386	process_vm_writev	sys_process_vm_writev		compat_sys_process_vm_writev
diff --git a/arch/x86/syscalls/syscall_64.tbl b/arch/x86/syscalls/syscall_64.tbl
new file mode 100644
index 0000000..b440a8f
--- /dev/null
+++ b/arch/x86/syscalls/syscall_64.tbl
@@ -0,0 +1,320 @@
+#
+# 64-bit system call numbers and entry vectors
+#
+# The format is:
+# <number> <abi> <name> <entry point>
+#
+# The abi is always "64" for this file (for now.)
+#
+0	64	read			sys_read
+1	64	write			sys_write
+2	64	open			sys_open
+3	64	close			sys_close
+4	64	stat			sys_newstat
+5	64	fstat			sys_newfstat
+6	64	lstat			sys_newlstat
+7	64	poll			sys_poll
+8	64	lseek			sys_lseek
+9	64	mmap			sys_mmap
+10	64	mprotect		sys_mprotect
+11	64	munmap			sys_munmap
+12	64	brk			sys_brk
+13	64	rt_sigaction		sys_rt_sigaction
+14	64	rt_sigprocmask		sys_rt_sigprocmask
+15	64	rt_sigreturn		stub_rt_sigreturn
+16	64	ioctl			sys_ioctl
+17	64	pread64			sys_pread64
+18	64	pwrite64		sys_pwrite64
+19	64	readv			sys_readv
+20	64	writev			sys_writev
+21	64	access			sys_access
+22	64	pipe			sys_pipe
+23	64	select			sys_select
+24	64	sched_yield		sys_sched_yield
+25	64	mremap			sys_mremap
+26	64	msync			sys_msync
+27	64	mincore			sys_mincore
+28	64	madvise			sys_madvise
+29	64	shmget			sys_shmget
+30	64	shmat			sys_shmat
+31	64	shmctl			sys_shmctl
+32	64	dup			sys_dup
+33	64	dup2			sys_dup2
+34	64	pause			sys_pause
+35	64	nanosleep		sys_nanosleep
+36	64	getitimer		sys_getitimer
+37	64	alarm			sys_alarm
+38	64	setitimer		sys_setitimer
+39	64	getpid			sys_getpid
+40	64	sendfile		sys_sendfile64
+41	64	socket			sys_socket
+42	64	connect			sys_connect
+43	64	accept			sys_accept
+44	64	sendto			sys_sendto
+45	64	recvfrom		sys_recvfrom
+46	64	sendmsg			sys_sendmsg
+47	64	recvmsg			sys_recvmsg
+48	64	shutdown		sys_shutdown
+49	64	bind			sys_bind
+50	64	listen			sys_listen
+51	64	getsockname		sys_getsockname
+52	64	getpeername		sys_getpeername
+53	64	socketpair		sys_socketpair
+54	64	setsockopt		sys_setsockopt
+55	64	getsockopt		sys_getsockopt
+56	64	clone			stub_clone
+57	64	fork			stub_fork
+58	64	vfork			stub_vfork
+59	64	execve			stub_execve
+60	64	exit			sys_exit
+61	64	wait4			sys_wait4
+62	64	kill			sys_kill
+63	64	uname			sys_newuname
+64	64	semget			sys_semget
+65	64	semop			sys_semop
+66	64	semctl			sys_semctl
+67	64	shmdt			sys_shmdt
+68	64	msgget			sys_msgget
+69	64	msgsnd			sys_msgsnd
+70	64	msgrcv			sys_msgrcv
+71	64	msgctl			sys_msgctl
+72	64	fcntl			sys_fcntl
+73	64	flock			sys_flock
+74	64	fsync			sys_fsync
+75	64	fdatasync		sys_fdatasync
+76	64	truncate		sys_truncate
+77	64	ftruncate		sys_ftruncate
+78	64	getdents		sys_getdents
+79	64	getcwd			sys_getcwd
+80	64	chdir			sys_chdir
+81	64	fchdir			sys_fchdir
+82	64	rename			sys_rename
+83	64	mkdir			sys_mkdir
+84	64	rmdir			sys_rmdir
+85	64	creat			sys_creat
+86	64	link			sys_link
+87	64	unlink			sys_unlink
+88	64	symlink			sys_symlink
+89	64	readlink		sys_readlink
+90	64	chmod			sys_chmod
+91	64	fchmod			sys_fchmod
+92	64	chown			sys_chown
+93	64	fchown			sys_fchown
+94	64	lchown			sys_lchown
+95	64	umask			sys_umask
+96	64	gettimeofday		sys_gettimeofday
+97	64	getrlimit		sys_getrlimit
+98	64	getrusage		sys_getrusage
+99	64	sysinfo			sys_sysinfo
+100	64	times			sys_times
+101	64	ptrace			sys_ptrace
+102	64	getuid			sys_getuid
+103	64	syslog			sys_syslog
+104	64	getgid			sys_getgid
+105	64	setuid			sys_setuid
+106	64	setgid			sys_setgid
+107	64	geteuid			sys_geteuid
+108	64	getegid			sys_getegid
+109	64	setpgid			sys_setpgid
+110	64	getppid			sys_getppid
+111	64	getpgrp			sys_getpgrp
+112	64	setsid			sys_setsid
+113	64	setreuid		sys_setreuid
+114	64	setregid		sys_setregid
+115	64	getgroups		sys_getgroups
+116	64	setgroups		sys_setgroups
+117	64	setresuid		sys_setresuid
+118	64	getresuid		sys_getresuid
+119	64	setresgid		sys_setresgid
+120	64	getresgid		sys_getresgid
+121	64	getpgid			sys_getpgid
+122	64	setfsuid		sys_setfsuid
+123	64	setfsgid		sys_setfsgid
+124	64	getsid			sys_getsid
+125	64	capget			sys_capget
+126	64	capset			sys_capset
+127	64	rt_sigpending		sys_rt_sigpending
+128	64	rt_sigtimedwait		sys_rt_sigtimedwait
+129	64	rt_sigqueueinfo		sys_rt_sigqueueinfo
+130	64	rt_sigsuspend		sys_rt_sigsuspend
+131	64	sigaltstack		stub_sigaltstack
+132	64	utime			sys_utime
+133	64	mknod			sys_mknod
+134	64	uselib
+135	64	personality		sys_personality
+136	64	ustat			sys_ustat
+137	64	statfs			sys_statfs
+138	64	fstatfs			sys_fstatfs
+139	64	sysfs			sys_sysfs
+140	64	getpriority		sys_getpriority
+141	64	setpriority		sys_setpriority
+142	64	sched_setparam		sys_sched_setparam
+143	64	sched_getparam		sys_sched_getparam
+144	64	sched_setscheduler	sys_sched_setscheduler
+145	64	sched_getscheduler	sys_sched_getscheduler
+146	64	sched_get_priority_max	sys_sched_get_priority_max
+147	64	sched_get_priority_min	sys_sched_get_priority_min
+148	64	sched_rr_get_interval	sys_sched_rr_get_interval
+149	64	mlock			sys_mlock
+150	64	munlock			sys_munlock
+151	64	mlockall		sys_mlockall
+152	64	munlockall		sys_munlockall
+153	64	vhangup			sys_vhangup
+154	64	modify_ldt		sys_modify_ldt
+155	64	pivot_root		sys_pivot_root
+156	64	_sysctl			sys_sysctl
+157	64	prctl			sys_prctl
+158	64	arch_prctl		sys_arch_prctl
+159	64	adjtimex		sys_adjtimex
+160	64	setrlimit		sys_setrlimit
+161	64	chroot			sys_chroot
+162	64	sync			sys_sync
+163	64	acct			sys_acct
+164	64	settimeofday		sys_settimeofday
+165	64	mount			sys_mount
+166	64	umount2			sys_umount
+167	64	swapon			sys_swapon
+168	64	swapoff			sys_swapoff
+169	64	reboot			sys_reboot
+170	64	sethostname		sys_sethostname
+171	64	setdomainname		sys_setdomainname
+172	64	iopl			stub_iopl
+173	64	ioperm			sys_ioperm
+174	64	create_module
+175	64	init_module		sys_init_module
+176	64	delete_module		sys_delete_module
+177	64	get_kernel_syms
+178	64	query_module
+179	64	quotactl		sys_quotactl
+180	64	nfsservctl
+181	64	getpmsg
+182	64	putpmsg
+183	64	afs_syscall
+184	64	tuxcall
+185	64	security
+186	64	gettid			sys_gettid
+187	64	readahead		sys_readahead
+188	64	setxattr		sys_setxattr
+189	64	lsetxattr		sys_lsetxattr
+190	64	fsetxattr		sys_fsetxattr
+191	64	getxattr		sys_getxattr
+192	64	lgetxattr		sys_lgetxattr
+193	64	fgetxattr		sys_fgetxattr
+194	64	listxattr		sys_listxattr
+195	64	llistxattr		sys_llistxattr
+196	64	flistxattr		sys_flistxattr
+197	64	removexattr		sys_removexattr
+198	64	lremovexattr		sys_lremovexattr
+199	64	fremovexattr		sys_fremovexattr
+200	64	tkill			sys_tkill
+201	64	time			sys_time
+202	64	futex			sys_futex
+203	64	sched_setaffinity	sys_sched_setaffinity
+204	64	sched_getaffinity	sys_sched_getaffinity
+205	64	set_thread_area
+206	64	io_setup		sys_io_setup
+207	64	io_destroy		sys_io_destroy
+208	64	io_getevents		sys_io_getevents
+209	64	io_submit		sys_io_submit
+210	64	io_cancel		sys_io_cancel
+211	64	get_thread_area
+212	64	lookup_dcookie		sys_lookup_dcookie
+213	64	epoll_create		sys_epoll_create
+214	64	epoll_ctl_old
+215	64	epoll_wait_old
+216	64	remap_file_pages	sys_remap_file_pages
+217	64	getdents64		sys_getdents64
+218	64	set_tid_address		sys_set_tid_address
+219	64	restart_syscall		sys_restart_syscall
+220	64	semtimedop		sys_semtimedop
+221	64	fadvise64		sys_fadvise64
+222	64	timer_create		sys_timer_create
+223	64	timer_settime		sys_timer_settime
+224	64	timer_gettime		sys_timer_gettime
+225	64	timer_getoverrun	sys_timer_getoverrun
+226	64	timer_delete		sys_timer_delete
+227	64	clock_settime		sys_clock_settime
+228	64	clock_gettime		sys_clock_gettime
+229	64	clock_getres		sys_clock_getres
+230	64	clock_nanosleep		sys_clock_nanosleep
+231	64	exit_group		sys_exit_group
+232	64	epoll_wait		sys_epoll_wait
+233	64	epoll_ctl		sys_epoll_ctl
+234	64	tgkill			sys_tgkill
+235	64	utimes			sys_utimes
+236	64	vserver
+237	64	mbind			sys_mbind
+238	64	set_mempolicy		sys_set_mempolicy
+239	64	get_mempolicy		sys_get_mempolicy
+240	64	mq_open			sys_mq_open
+241	64	mq_unlink		sys_mq_unlink
+242	64	mq_timedsend		sys_mq_timedsend
+243	64	mq_timedreceive		sys_mq_timedreceive
+244	64	mq_notify		sys_mq_notify
+245	64	mq_getsetattr		sys_mq_getsetattr
+246	64	kexec_load		sys_kexec_load
+247	64	waitid			sys_waitid
+248	64	add_key			sys_add_key
+249	64	request_key		sys_request_key
+250	64	keyctl			sys_keyctl
+251	64	ioprio_set		sys_ioprio_set
+252	64	ioprio_get		sys_ioprio_get
+253	64	inotify_init		sys_inotify_init
+254	64	inotify_add_watch	sys_inotify_add_watch
+255	64	inotify_rm_watch	sys_inotify_rm_watch
+256	64	migrate_pages		sys_migrate_pages
+257	64	openat			sys_openat
+258	64	mkdirat			sys_mkdirat
+259	64	mknodat			sys_mknodat
+260	64	fchownat		sys_fchownat
+261	64	futimesat		sys_futimesat
+262	64	newfstatat		sys_newfstatat
+263	64	unlinkat		sys_unlinkat
+264	64	renameat		sys_renameat
+265	64	linkat			sys_linkat
+266	64	symlinkat		sys_symlinkat
+267	64	readlinkat		sys_readlinkat
+268	64	fchmodat		sys_fchmodat
+269	64	faccessat		sys_faccessat
+270	64	pselect6		sys_pselect6
+271	64	ppoll			sys_ppoll
+272	64	unshare			sys_unshare
+273	64	set_robust_list		sys_set_robust_list
+274	64	get_robust_list		sys_get_robust_list
+275	64	splice			sys_splice
+276	64	tee			sys_tee
+277	64	sync_file_range		sys_sync_file_range
+278	64	vmsplice		sys_vmsplice
+279	64	move_pages		sys_move_pages
+280	64	utimensat		sys_utimensat
+281	64	epoll_pwait		sys_epoll_pwait
+282	64	signalfd		sys_signalfd
+283	64	timerfd_create		sys_timerfd_create
+284	64	eventfd			sys_eventfd
+285	64	fallocate		sys_fallocate
+286	64	timerfd_settime		sys_timerfd_settime
+287	64	timerfd_gettime		sys_timerfd_gettime
+288	64	accept4			sys_accept4
+289	64	signalfd4		sys_signalfd4
+290	64	eventfd2		sys_eventfd2
+291	64	epoll_create1		sys_epoll_create1
+292	64	dup3			sys_dup3
+293	64	pipe2			sys_pipe2
+294	64	inotify_init1		sys_inotify_init1
+295	64	preadv			sys_preadv
+296	64	pwritev			sys_pwritev
+297	64	rt_tgsigqueueinfo	sys_rt_tgsigqueueinfo
+298	64	perf_event_open		sys_perf_event_open
+299	64	recvmmsg		sys_recvmmsg
+300	64	fanotify_init		sys_fanotify_init
+301	64	fanotify_mark		sys_fanotify_mark
+302	64	prlimit64		sys_prlimit64
+303	64	name_to_handle_at	sys_name_to_handle_at
+304	64	open_by_handle_at	sys_open_by_handle_at
+305	64	clock_adjtime		sys_clock_adjtime
+306	64	syncfs			sys_syncfs
+307	64	sendmmsg		sys_sendmmsg
+308	64	setns			sys_setns
+309	64	getcpu			sys_getcpu
+310	64	process_vm_readv	sys_process_vm_readv
+311	64	process_vm_writev	sys_process_vm_writev
diff --git a/arch/x86/syscalls/syscallhdr.sh b/arch/x86/syscalls/syscallhdr.sh
new file mode 100644
index 0000000..31fd5f1
--- /dev/null
+++ b/arch/x86/syscalls/syscallhdr.sh
@@ -0,0 +1,27 @@
+#!/bin/sh
+
+in="$1"
+out="$2"
+my_abis=`echo "($3)" | tr ',' '|'`
+prefix="$4"
+offset="$5"
+
+fileguard=_ASM_X86_`basename "$out" | sed \
+    -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \
+    -e 's/[^A-Z0-9_]/_/g' -e 's/__/_/g'`
+grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
+    echo "#ifndef ${fileguard}"
+    echo "#define ${fileguard} 1"
+    echo ""
+
+    while read nr abi name entry ; do
+	if [ -z "$offset" ]; then
+	    echo "#define __NR_${prefix}${name} $nr"
+	else
+	    echo "#define __NR_${prefix}${name} ($offset + $nr)"
+        fi
+    done
+
+    echo ""
+    echo "#endif /* ${fileguard} */"
+) > "$out"
diff --git a/arch/x86/syscalls/syscalltbl.sh b/arch/x86/syscalls/syscalltbl.sh
new file mode 100644
index 0000000..0e7f8ec
--- /dev/null
+++ b/arch/x86/syscalls/syscalltbl.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+in="$1"
+out="$2"
+
+grep '^[0-9]' "$in" | sort -n | (
+    while read nr abi name entry compat; do
+	abi=`echo "$abi" | tr '[a-z]' '[A-Z]'`
+	if [ -n "$compat" ]; then
+	    echo "__SYSCALL_${abi}($nr, $entry, $compat)"
+	elif [ -n "$entry" ]; then
+	    echo "__SYSCALL_${abi}($nr, $entry, $entry)"
+	fi
+    done
+) > "$out"
diff --git a/arch/x86/um/Makefile b/arch/x86/um/Makefile
index 8fb5840..5d065b2 100644
--- a/arch/x86/um/Makefile
+++ b/arch/x86/um/Makefile
@@ -37,7 +37,8 @@
 USER_OBJS := bugs_$(BITS).o ptrace_user.o fault.o
 
 extra-y += user-offsets.s
-$(obj)/user-offsets.s: c_flags = -Wp,-MD,$(depfile) $(USER_CFLAGS)
+$(obj)/user-offsets.s: c_flags = -Wp,-MD,$(depfile) $(USER_CFLAGS) \
+	-Iarch/x86/include/generated
 
 UNPROFILE_OBJS := stub_segv.o
 CFLAGS_stub_segv.o := $(CFLAGS_NO_HARDENING)
diff --git a/arch/x86/um/shared/sysdep/ptrace.h b/arch/x86/um/shared/sysdep/ptrace.h
index 711b162..2bbe1ec2 100644
--- a/arch/x86/um/shared/sysdep/ptrace.h
+++ b/arch/x86/um/shared/sysdep/ptrace.h
@@ -1,5 +1,15 @@
+#ifndef __SYSDEP_X86_PTRACE_H
+#define __SYSDEP_X86_PTRACE_H
+
 #ifdef __i386__
 #include "ptrace_32.h"
 #else
 #include "ptrace_64.h"
 #endif
+
+static inline long regs_return_value(struct uml_pt_regs *regs)
+{
+	return UPT_SYSCALL_RET(regs);
+}
+
+#endif /* __SYSDEP_X86_PTRACE_H */
diff --git a/arch/x86/um/sys_call_table_32.S b/arch/x86/um/sys_call_table_32.S
deleted file mode 100644
index a7ca80d..0000000
--- a/arch/x86/um/sys_call_table_32.S
+++ /dev/null
@@ -1,26 +0,0 @@
-#include <linux/linkage.h>
-/* Steal i386 syscall table for our purposes, but with some slight changes.*/
-
-#define sys_iopl sys_ni_syscall
-#define sys_ioperm sys_ni_syscall
-
-#define sys_vm86old sys_ni_syscall
-#define sys_vm86 sys_ni_syscall
-
-#define old_mmap sys_old_mmap
-
-#define ptregs_fork sys_fork
-#define ptregs_execve sys_execve
-#define ptregs_iopl sys_iopl
-#define ptregs_vm86old sys_vm86old
-#define ptregs_clone sys_clone
-#define ptregs_vm86 sys_vm86
-#define ptregs_sigaltstack sys_sigaltstack
-#define ptregs_vfork sys_vfork
-
-.section .rodata,"a"
-
-#include "../kernel/syscall_table_32.S"
-
-ENTRY(syscall_table_size)
-.long .-sys_call_table
diff --git a/arch/x86/um/sys_call_table_32.c b/arch/x86/um/sys_call_table_32.c
new file mode 100644
index 0000000..416bd40
--- /dev/null
+++ b/arch/x86/um/sys_call_table_32.c
@@ -0,0 +1,55 @@
+/*
+ * System call table for UML/i386, copied from arch/x86/kernel/syscall_*.c
+ * with some changes for UML.
+ */
+
+#include <linux/linkage.h>
+#include <linux/sys.h>
+#include <linux/cache.h>
+#include <generated/user_constants.h>
+
+#define __NO_STUBS
+
+/*
+ * Below you can see, in terms of #define's, the differences between the x86-64
+ * and the UML syscall table.
+ */
+
+/* Not going to be implemented by UML, since we have no hardware. */
+#define sys_iopl sys_ni_syscall
+#define sys_ioperm sys_ni_syscall
+
+#define sys_vm86old sys_ni_syscall
+#define sys_vm86 sys_ni_syscall
+
+#define old_mmap sys_old_mmap
+
+#define ptregs_fork sys_fork
+#define ptregs_execve sys_execve
+#define ptregs_iopl sys_iopl
+#define ptregs_vm86old sys_vm86old
+#define ptregs_clone sys_clone
+#define ptregs_vm86 sys_vm86
+#define ptregs_sigaltstack sys_sigaltstack
+#define ptregs_vfork sys_vfork
+
+#define __SYSCALL_I386(nr, sym, compat) extern asmlinkage void sym(void) ;
+#include <asm/syscalls_32.h>
+
+#undef __SYSCALL_I386
+#define __SYSCALL_I386(nr, sym, compat) [ nr ] = sym,
+
+typedef void (*sys_call_ptr_t)(void);
+
+extern void sys_ni_syscall(void);
+
+const sys_call_ptr_t sys_call_table[] __cacheline_aligned = {
+	/*
+	 * Smells like a compiler bug -- it doesn't work
+	 * when the & below is removed.
+	 */
+	[0 ... __NR_syscall_max] = &sys_ni_syscall,
+#include <asm/syscalls_32.h>
+};
+
+int syscall_table_size = sizeof(sys_call_table);
diff --git a/arch/x86/um/sys_call_table_64.c b/arch/x86/um/sys_call_table_64.c
index 99522f7..fe626c3 100644
--- a/arch/x86/um/sys_call_table_64.c
+++ b/arch/x86/um/sys_call_table_64.c
@@ -1,11 +1,12 @@
 /*
- * System call table for UML/x86-64, copied from arch/x86_64/kernel/syscall.c
+ * System call table for UML/x86-64, copied from arch/x86/kernel/syscall_*.c
  * with some changes for UML.
  */
 
 #include <linux/linkage.h>
 #include <linux/sys.h>
 #include <linux/cache.h>
+#include <generated/user_constants.h>
 
 #define __NO_STUBS
 
@@ -34,31 +35,23 @@
 #define stub_sigaltstack sys_sigaltstack
 #define stub_rt_sigreturn sys_rt_sigreturn
 
-#define __SYSCALL(nr, sym) extern asmlinkage void sym(void) ;
-#undef _ASM_X86_UNISTD_64_H
-#include "../../x86/include/asm/unistd_64.h"
+#define __SYSCALL_64(nr, sym, compat) extern asmlinkage void sym(void) ;
+#include <asm/syscalls_64.h>
 
-#undef __SYSCALL
-#define __SYSCALL(nr, sym) [ nr ] = sym,
-#undef _ASM_X86_UNISTD_64_H
+#undef __SYSCALL_64
+#define __SYSCALL_64(nr, sym, compat) [ nr ] = sym,
 
 typedef void (*sys_call_ptr_t)(void);
 
 extern void sys_ni_syscall(void);
 
-/*
- * We used to have a trick here which made sure that holes in the
- * x86_64 table were filled in with sys_ni_syscall, but a comment in
- * unistd_64.h says that holes aren't allowed, so the trick was
- * removed.
- * The trick looked like this
- *	[0 ... UM_NR_syscall_max] = &sys_ni_syscall
- * before including unistd_64.h - the later initializations overwrote
- * the sys_ni_syscall filler.
- */
-
-sys_call_ptr_t sys_call_table[] __cacheline_aligned = {
-#include <asm/unistd_64.h>
+const sys_call_ptr_t sys_call_table[] __cacheline_aligned = {
+	/*
+	 * Smells like a compiler bug -- it doesn't work
+	 * when the & below is removed.
+	 */
+	[0 ... __NR_syscall_max] = &sys_ni_syscall,
+#include <asm/syscalls_64.h>
 };
 
 int syscall_table_size = sizeof(sys_call_table);
diff --git a/arch/x86/um/user-offsets.c b/arch/x86/um/user-offsets.c
index ca49be8..5edf4f4 100644
--- a/arch/x86/um/user-offsets.c
+++ b/arch/x86/um/user-offsets.c
@@ -8,6 +8,18 @@
 #include <asm/ptrace.h>
 #include <asm/types.h>
 
+#ifdef __i386__
+#define __SYSCALL_I386(nr, sym, compat) [nr] = 1,
+static char syscalls[] = {
+#include <asm/syscalls_32.h>
+};
+#else
+#define __SYSCALL_64(nr, sym, compat) [nr] = 1,
+static char syscalls[] = {
+#include <asm/syscalls_64.h>
+};
+#endif
+
 #define DEFINE(sym, val) \
 	asm volatile("\n->" #sym " %0 " #val : : "i" (val))
 
@@ -77,4 +89,7 @@
 	DEFINE(UM_PROT_READ, PROT_READ);
 	DEFINE(UM_PROT_WRITE, PROT_WRITE);
 	DEFINE(UM_PROT_EXEC, PROT_EXEC);
+
+	DEFINE(__NR_syscall_max, sizeof(syscalls) - 1);
+	DEFINE(NR_syscalls, sizeof(syscalls));
 }
diff --git a/arch/xtensa/kernel/ptrace.c b/arch/xtensa/kernel/ptrace.c
index a0d042a..2dff698 100644
--- a/arch/xtensa/kernel/ptrace.c
+++ b/arch/xtensa/kernel/ptrace.c
@@ -334,8 +334,7 @@
 		do_syscall_trace();
 
 #if 0
-	if (unlikely(current->audit_context))
-		audit_syscall_entry(current, AUDIT_ARCH_XTENSA..);
+	audit_syscall_entry(current, AUDIT_ARCH_XTENSA..);
 #endif
 }
 
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index 163263d..ee55019 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -3117,18 +3117,17 @@
  */
 static void cfq_preempt_queue(struct cfq_data *cfqd, struct cfq_queue *cfqq)
 {
-	struct cfq_queue *old_cfqq = cfqd->active_queue;
-
 	cfq_log_cfqq(cfqd, cfqq, "preempt");
-	cfq_slice_expired(cfqd, 1);
 
 	/*
 	 * workload type is changed, don't save slice, otherwise preempt
 	 * doesn't happen
 	 */
-	if (cfqq_type(old_cfqq) != cfqq_type(cfqq))
+	if (cfqq_type(cfqd->active_queue) != cfqq_type(cfqq))
 		cfqq->cfqg->saved_workload_slice = 0;
 
+	cfq_slice_expired(cfqd, 1);
+
 	/*
 	 * Put the new queue at the front of the of the current list,
 	 * so we know that it will be selected next.
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index ecb26b4..c07f44f 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -20,11 +20,12 @@
 # All the builtin files are in the "acpi." module_param namespace.
 acpi-y				+= osl.o utils.o reboot.o
 acpi-y				+= atomicio.o
+acpi-y				+= nvs.o
 
 # sleep related files
 acpi-y				+= wakeup.o
 acpi-y				+= sleep.o
-acpi-$(CONFIG_ACPI_SLEEP)	+= proc.o nvs.o
+acpi-$(CONFIG_ACPI_SLEEP)	+= proc.o
 
 
 #
diff --git a/drivers/acpi/acpica/Makefile b/drivers/acpi/acpica/Makefile
index 301bd2d..0ca208b 100644
--- a/drivers/acpi/acpica/Makefile
+++ b/drivers/acpi/acpica/Makefile
@@ -8,41 +8,151 @@
 # use acpi.o to put all files here into acpi.o modparam namespace
 obj-y	+= acpi.o
 
-acpi-y := dsfield.o   dsmthdat.o  dsopcode.o  dswexec.o  dswscope.o \
-	 dsmethod.o  dsobject.o  dsutils.o   dswload.o  dswstate.o \
-	 dsinit.o dsargs.o dscontrol.o dswload2.o
+acpi-y :=		\
+	dsargs.o	\
+	dscontrol.o	\
+	dsfield.o	\
+	dsinit.o	\
+	dsmethod.o	\
+	dsmthdat.o	\
+	dsobject.o	\
+	dsopcode.o	\
+	dsutils.o	\
+	dswexec.o	\
+	dswload.o	\
+	dswload2.o	\
+	dswscope.o	\
+	dswstate.o
 
-acpi-y += evevent.o  evregion.o  evsci.o    evxfevnt.o \
-	 evmisc.o   evrgnini.o  evxface.o  evxfregn.o \
-	 evgpe.o    evgpeblk.o evgpeinit.o  evgpeutil.o evxfgpe.o evglock.o
+acpi-y +=		\
+	evevent.o	\
+	evgpe.o		\
+	evgpeblk.o	\
+	evgpeinit.o	\
+	evgpeutil.o	\
+	evglock.o	\
+	evmisc.o	\
+	evregion.o	\
+	evrgnini.o	\
+	evsci.o		\
+	evxface.o	\
+	evxfevnt.o	\
+	evxfgpe.o	\
+	evxfregn.o
 
-acpi-y += exconfig.o  exfield.o  exnames.o   exoparg6.o  exresolv.o  exstorob.o\
-	 exconvrt.o  exfldio.o  exoparg1.o  exprep.o    exresop.o   exsystem.o\
-	 excreate.o  exmisc.o   exoparg2.o  exregion.o  exstore.o   exutils.o \
-	 exdump.o    exmutex.o  exoparg3.o  exresnte.o  exstoren.o  exdebug.o
+acpi-y +=		\
+	exconfig.o	\
+	exconvrt.o	\
+	excreate.o	\
+	exdebug.o	\
+	exdump.o	\
+	exfield.o	\
+	exfldio.o	\
+	exmutex.o	\
+	exnames.o	\
+	exoparg1.o	\
+	exoparg2.o	\
+	exoparg3.o	\
+	exoparg6.o	\
+	exprep.o	\
+	exmisc.o	\
+	exregion.o	\
+	exresnte.o	\
+	exresolv.o	\
+	exresop.o	\
+	exstore.o	\
+	exstoren.o	\
+	exstorob.o	\
+	exsystem.o	\
+	exutils.o
 
-acpi-y += hwacpi.o  hwgpe.o  hwregs.o  hwsleep.o hwxface.o hwvalid.o hwpci.o
+acpi-y +=		\
+	hwacpi.o	\
+	hwgpe.o		\
+	hwpci.o		\
+	hwregs.o	\
+	hwsleep.o	\
+	hwvalid.o	\
+	hwxface.o
 
 acpi-$(ACPI_FUTURE_USAGE) += hwtimer.o
 
-acpi-y += nsaccess.o  nsload.o    nssearch.o  nsxfeval.o \
-	 nsalloc.o   nseval.o    nsnames.o   nsutils.o   nsxfname.o \
-	 nsdump.o    nsinit.o    nsobject.o  nswalk.o    nsxfobj.o  \
-	 nsparse.o   nspredef.o  nsrepair.o  nsrepair2.o
+acpi-y +=		\
+	nsaccess.o	\
+	nsalloc.o	\
+	nsdump.o	\
+	nseval.o	\
+	nsinit.o	\
+	nsload.o	\
+	nsnames.o	\
+	nsobject.o	\
+	nsparse.o	\
+	nspredef.o	\
+	nsrepair.o	\
+	nsrepair2.o	\
+	nssearch.o	\
+	nsutils.o	\
+	nswalk.o	\
+	nsxfeval.o	\
+	nsxfname.o	\
+	nsxfobj.o
 
 acpi-$(ACPI_FUTURE_USAGE) += nsdumpdv.o
 
-acpi-y += psargs.o    psparse.o  psloop.o pstree.o   pswalk.o  \
-	 psopcode.o  psscope.o  psutils.o  psxface.o
+acpi-y +=		\
+	psargs.o	\
+	psloop.o	\
+	psopcode.o	\
+	psparse.o	\
+	psscope.o	\
+	pstree.o	\
+	psutils.o	\
+	pswalk.o	\
+	psxface.o
 
-acpi-y += rsaddr.o rscreate.o rsinfo.o rsio.o rslist.o rsmisc.o rsxface.o \
-	 rscalc.o  rsirq.o  rsmemory.o  rsutils.o
+acpi-y +=		\
+	rsaddr.o	\
+	rscalc.o	\
+	rscreate.o	\
+	rsinfo.o	\
+	rsio.o		\
+	rsirq.o		\
+	rslist.o	\
+	rsmemory.o	\
+	rsmisc.o	\
+	rsserial.o	\
+	rsutils.o	\
+	rsxface.o
 
 acpi-$(ACPI_FUTURE_USAGE) += rsdump.o
 
-acpi-y += tbxface.o tbinstal.o tbutils.o tbfind.o tbfadt.o tbxfroot.o
+acpi-y +=		\
+	tbfadt.o	\
+	tbfind.o	\
+	tbinstal.o	\
+	tbutils.o	\
+	tbxface.o	\
+	tbxfroot.o
 
-acpi-y += utalloc.o utdebug.o uteval.o utinit.o utmisc.o utxface.o \
-		utcopy.o utdelete.o utglobal.o utmath.o utobject.o \
-		utstate.o utmutex.o utobject.o utresrc.o utlock.o utids.o \
-		utosi.o utxferror.o utdecode.o
+acpi-y +=		\
+	utaddress.o	\
+	utalloc.o	\
+	utcopy.o	\
+	utdebug.o	\
+	utdecode.o	\
+	utdelete.o	\
+	uteval.o	\
+	utglobal.o	\
+	utids.o		\
+	utinit.o	\
+	utlock.o	\
+	utmath.o	\
+	utmisc.o	\
+	utmutex.o	\
+	utobject.o	\
+	utosi.o		\
+	utresrc.o	\
+	utstate.o	\
+	utxface.o	\
+	utxferror.o	\
+	utxfmutex.o
diff --git a/drivers/acpi/acpica/accommon.h b/drivers/acpi/acpica/accommon.h
index e0ba17f..a44bd42 100644
--- a/drivers/acpi/acpica/accommon.h
+++ b/drivers/acpi/acpica/accommon.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/acconfig.h b/drivers/acpi/acpica/acconfig.h
index f895a24..1f30af6 100644
--- a/drivers/acpi/acpica/acconfig.h
+++ b/drivers/acpi/acpica/acconfig.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -123,6 +123,10 @@
 
 #define ACPI_MAX_SLEEP                  2000	/* Two seconds */
 
+/* Address Range lists are per-space_id (Memory and I/O only) */
+
+#define ACPI_ADDRESS_RANGE_MAX          2
+
 /******************************************************************************
  *
  * ACPI Specification constants (Do not change unless the specification changes)
@@ -202,9 +206,10 @@
 #define ACPI_RSDP_CHECKSUM_LENGTH       20
 #define ACPI_RSDP_XCHECKSUM_LENGTH      36
 
-/* SMBus and IPMI bidirectional buffer size */
+/* SMBus, GSBus and IPMI bidirectional buffer size */
 
 #define ACPI_SMBUS_BUFFER_SIZE          34
+#define ACPI_GSBUS_BUFFER_SIZE          34
 #define ACPI_IPMI_BUFFER_SIZE           66
 
 /* _sx_d and _sx_w control methods */
diff --git a/drivers/acpi/acpica/acdebug.h b/drivers/acpi/acpica/acdebug.h
index eb0b1f8..deaa819 100644
--- a/drivers/acpi/acpica/acdebug.h
+++ b/drivers/acpi/acpica/acdebug.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/acdispat.h b/drivers/acpi/acpica/acdispat.h
index 2d1b7ff..5935ba6 100644
--- a/drivers/acpi/acpica/acdispat.h
+++ b/drivers/acpi/acpica/acdispat.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/acevents.h b/drivers/acpi/acpica/acevents.h
index bea3b48..c53caa5 100644
--- a/drivers/acpi/acpica/acevents.h
+++ b/drivers/acpi/acpica/acevents.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -162,6 +162,7 @@
 
 acpi_status
 acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
+			       union acpi_operand_object *field_obj,
 			       u32 function,
 			       u32 region_offset, u32 bit_width, u64 *value);
 
diff --git a/drivers/acpi/acpica/acglobal.h b/drivers/acpi/acpica/acglobal.h
index e6652d7..2853f76 100644
--- a/drivers/acpi/acpica/acglobal.h
+++ b/drivers/acpi/acpica/acglobal.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -140,8 +140,19 @@
 acpi_name acpi_gbl_trace_method_name;
 u8 acpi_gbl_system_awake_and_running;
 
+/*
+ * ACPI 5.0 introduces the concept of a "reduced hardware platform", meaning
+ * that the ACPI hardware is no longer required. A flag in the FADT indicates
+ * a reduced HW machine, and that flag is duplicated here for convenience.
+ */
+u8 acpi_gbl_reduced_hardware;
+
 #endif
 
+/* Do not disassemble buffers to resource descriptors */
+
+ACPI_EXTERN u8 ACPI_INIT_GLOBAL(acpi_gbl_no_resource_disassembly, FALSE);
+
 /*****************************************************************************
  *
  * Debug support
@@ -207,7 +218,7 @@
 
 /*****************************************************************************
  *
- * Mutual exlusion within ACPICA subsystem
+ * Mutual exclusion within ACPICA subsystem
  *
  ****************************************************************************/
 
@@ -295,6 +306,8 @@
 ACPI_EXTERN u8 acpi_gbl_events_initialized;
 ACPI_EXTERN u8 acpi_gbl_osi_data;
 ACPI_EXTERN struct acpi_interface_info *acpi_gbl_supported_interfaces;
+ACPI_EXTERN struct acpi_address_range
+    *acpi_gbl_address_range_list[ACPI_ADDRESS_RANGE_MAX];
 
 #ifndef DEFINE_ACPI_GLOBALS
 
diff --git a/drivers/acpi/acpica/achware.h b/drivers/acpi/acpica/achware.h
index e7213be..677793e 100644
--- a/drivers/acpi/acpica/achware.h
+++ b/drivers/acpi/acpica/achware.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/acinterp.h b/drivers/acpi/acpica/acinterp.h
index 3731e1c..eb30863 100644
--- a/drivers/acpi/acpica/acinterp.h
+++ b/drivers/acpi/acpica/acinterp.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -468,6 +468,8 @@
 
 void acpi_ex_integer_to_string(char *dest, u64 value);
 
+u8 acpi_is_valid_space_id(u8 space_id);
+
 /*
  * exregion - default op_region handlers
  */
diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h
index 5552125..3f24068 100644
--- a/drivers/acpi/acpica/aclocal.h
+++ b/drivers/acpi/acpica/aclocal.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -53,7 +53,7 @@
 
 /* Total number of aml opcodes defined */
 
-#define AML_NUM_OPCODES                 0x7F
+#define AML_NUM_OPCODES                 0x81
 
 /* Forward declarations */
 
@@ -249,12 +249,16 @@
 	struct acpi_namespace_node *field_node;
 	struct acpi_namespace_node *register_node;
 	struct acpi_namespace_node *data_register_node;
+	struct acpi_namespace_node *connection_node;
+	u8 *resource_buffer;
 	u32 bank_value;
 	u32 field_bit_position;
 	u32 field_bit_length;
+	u16 resource_length;
 	u8 field_flags;
 	u8 attribute;
 	u8 field_type;
+	u8 access_length;
 };
 
 typedef
@@ -315,7 +319,8 @@
 
 /*
  * Used for ACPI_PTYPE1_FIXED, ACPI_PTYPE1_VAR, ACPI_PTYPE2,
- * ACPI_PTYPE2_MIN, ACPI_PTYPE2_PKG_COUNT, ACPI_PTYPE2_COUNT
+ * ACPI_PTYPE2_MIN, ACPI_PTYPE2_PKG_COUNT, ACPI_PTYPE2_COUNT,
+ * ACPI_PTYPE2_FIX_VAR
  */
 struct acpi_package_info {
 	u8 type;
@@ -625,6 +630,15 @@
 
 typedef acpi_status(*ACPI_EXECUTE_OP) (struct acpi_walk_state * walk_state);
 
+/* Address Range info block */
+
+struct acpi_address_range {
+	struct acpi_address_range *next;
+	struct acpi_namespace_node *region_node;
+	acpi_physical_address start_address;
+	acpi_physical_address end_address;
+};
+
 /*****************************************************************************
  *
  * Parser typedefs and structs
@@ -951,7 +965,7 @@
 #define ACPI_RESOURCE_NAME_END_DEPENDENT        0x38
 #define ACPI_RESOURCE_NAME_IO                   0x40
 #define ACPI_RESOURCE_NAME_FIXED_IO             0x48
-#define ACPI_RESOURCE_NAME_RESERVED_S1          0x50
+#define ACPI_RESOURCE_NAME_FIXED_DMA            0x50
 #define ACPI_RESOURCE_NAME_RESERVED_S2          0x58
 #define ACPI_RESOURCE_NAME_RESERVED_S3          0x60
 #define ACPI_RESOURCE_NAME_RESERVED_S4          0x68
@@ -973,7 +987,9 @@
 #define ACPI_RESOURCE_NAME_EXTENDED_IRQ         0x89
 #define ACPI_RESOURCE_NAME_ADDRESS64            0x8A
 #define ACPI_RESOURCE_NAME_EXTENDED_ADDRESS64   0x8B
-#define ACPI_RESOURCE_NAME_LARGE_MAX            0x8B
+#define ACPI_RESOURCE_NAME_GPIO                 0x8C
+#define ACPI_RESOURCE_NAME_SERIAL_BUS           0x8E
+#define ACPI_RESOURCE_NAME_LARGE_MAX            0x8E
 
 /*****************************************************************************
  *
diff --git a/drivers/acpi/acpica/acmacros.h b/drivers/acpi/acpica/acmacros.h
index b7491ee..ef338a9 100644
--- a/drivers/acpi/acpica/acmacros.h
+++ b/drivers/acpi/acpica/acmacros.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/acnamesp.h b/drivers/acpi/acpica/acnamesp.h
index 79a598c..2c9e0f0 100644
--- a/drivers/acpi/acpica/acnamesp.h
+++ b/drivers/acpi/acpica/acnamesp.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/acobject.h b/drivers/acpi/acpica/acobject.h
index 1055769..c065078 100644
--- a/drivers/acpi/acpica/acobject.h
+++ b/drivers/acpi/acpica/acobject.h
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -254,6 +254,7 @@
 	u32                             base_byte_offset;   /* Byte offset within containing object */\
 	u32                             value;              /* Value to store into the Bank or Index register */\
 	u8                              start_field_bit_offset;/* Bit offset within first field datum (0-63) */\
+	u8                              access_length;	/* For serial regions/fields */
 
 
 struct acpi_object_field_common {	/* COMMON FIELD (for BUFFER, REGION, BANK, and INDEX fields) */
@@ -261,7 +262,9 @@
 };
 
 struct acpi_object_region_field {
-	ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *region_obj;	/* Containing op_region object */
+	ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO u16 resource_length;
+	union acpi_operand_object *region_obj;	/* Containing op_region object */
+	u8 *resource_buffer;	/* resource_template for serial regions/fields */
 };
 
 struct acpi_object_bank_field {
@@ -358,6 +361,7 @@
  */
 struct acpi_object_extra {
 	ACPI_OBJECT_COMMON_HEADER struct acpi_namespace_node *method_REG;	/* _REG method for this region (if any) */
+	struct acpi_namespace_node *scope_node;
 	void *region_context;	/* Region-specific data */
 	u8 *aml_start;
 	u32 aml_length;
diff --git a/drivers/acpi/acpica/acopcode.h b/drivers/acpi/acpica/acopcode.h
index bb2ccfa..9440d05 100644
--- a/drivers/acpi/acpica/acopcode.h
+++ b/drivers/acpi/acpica/acopcode.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -93,6 +93,7 @@
 #define ARGP_CONCAT_OP                  ARGP_LIST3 (ARGP_TERMARG,    ARGP_TERMARG,       ARGP_TARGET)
 #define ARGP_CONCAT_RES_OP              ARGP_LIST3 (ARGP_TERMARG,    ARGP_TERMARG,       ARGP_TARGET)
 #define ARGP_COND_REF_OF_OP             ARGP_LIST2 (ARGP_SUPERNAME,  ARGP_SUPERNAME)
+#define ARGP_CONNECTFIELD_OP            ARGP_LIST1 (ARGP_NAMESTRING)
 #define ARGP_CONTINUE_OP                ARG_NONE
 #define ARGP_COPY_OP                    ARGP_LIST2 (ARGP_TERMARG,    ARGP_SIMPLENAME)
 #define ARGP_CREATE_BIT_FIELD_OP        ARGP_LIST3 (ARGP_TERMARG,    ARGP_TERMARG,       ARGP_NAME)
@@ -164,6 +165,7 @@
 #define ARGP_RETURN_OP                  ARGP_LIST1 (ARGP_TERMARG)
 #define ARGP_REVISION_OP                ARG_NONE
 #define ARGP_SCOPE_OP                   ARGP_LIST3 (ARGP_PKGLENGTH,  ARGP_NAME,          ARGP_TERMLIST)
+#define ARGP_SERIALFIELD_OP             ARGP_LIST1 (ARGP_NAMESTRING)
 #define ARGP_SHIFT_LEFT_OP              ARGP_LIST3 (ARGP_TERMARG,    ARGP_TERMARG,       ARGP_TARGET)
 #define ARGP_SHIFT_RIGHT_OP             ARGP_LIST3 (ARGP_TERMARG,    ARGP_TERMARG,       ARGP_TARGET)
 #define ARGP_SIGNAL_OP                  ARGP_LIST1 (ARGP_SUPERNAME)
@@ -223,6 +225,7 @@
 #define ARGI_CONCAT_OP                  ARGI_LIST3 (ARGI_COMPUTEDATA,ARGI_COMPUTEDATA,   ARGI_TARGETREF)
 #define ARGI_CONCAT_RES_OP              ARGI_LIST3 (ARGI_BUFFER,     ARGI_BUFFER,        ARGI_TARGETREF)
 #define ARGI_COND_REF_OF_OP             ARGI_LIST2 (ARGI_OBJECT_REF, ARGI_TARGETREF)
+#define ARGI_CONNECTFIELD_OP            ARGI_INVALID_OPCODE
 #define ARGI_CONTINUE_OP                ARGI_INVALID_OPCODE
 #define ARGI_COPY_OP                    ARGI_LIST2 (ARGI_ANYTYPE,    ARGI_SIMPLE_TARGET)
 #define ARGI_CREATE_BIT_FIELD_OP        ARGI_LIST3 (ARGI_BUFFER,     ARGI_INTEGER,       ARGI_REFERENCE)
@@ -294,6 +297,7 @@
 #define ARGI_RETURN_OP                  ARGI_INVALID_OPCODE
 #define ARGI_REVISION_OP                ARG_NONE
 #define ARGI_SCOPE_OP                   ARGI_INVALID_OPCODE
+#define ARGI_SERIALFIELD_OP             ARGI_INVALID_OPCODE
 #define ARGI_SHIFT_LEFT_OP              ARGI_LIST3 (ARGI_INTEGER,    ARGI_INTEGER,       ARGI_TARGETREF)
 #define ARGI_SHIFT_RIGHT_OP             ARGI_LIST3 (ARGI_INTEGER,    ARGI_INTEGER,       ARGI_TARGETREF)
 #define ARGI_SIGNAL_OP                  ARGI_LIST1 (ARGI_EVENT)
diff --git a/drivers/acpi/acpica/acparser.h b/drivers/acpi/acpica/acparser.h
index 5ea1e06..b725d78 100644
--- a/drivers/acpi/acpica/acparser.h
+++ b/drivers/acpi/acpica/acparser.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/acpredef.h b/drivers/acpi/acpica/acpredef.h
index c445cca..bbb34c9 100644
--- a/drivers/acpi/acpica/acpredef.h
+++ b/drivers/acpi/acpica/acpredef.h
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -94,6 +94,14 @@
  * ACPI_PTYPE2_REV_FIXED: Revision at start, each subpackage is Fixed-length
  *      (Used for _ART, _FPS)
  *
+ * ACPI_PTYPE2_FIX_VAR: Each subpackage consists of some fixed-length elements
+ *      followed by an optional element
+ *      object type
+ *      count
+ *      object type
+ *      count = 0 (optional)
+ *      (Used for _DLM)
+ *
  *****************************************************************************/
 
 enum acpi_return_package_types {
@@ -105,7 +113,8 @@
 	ACPI_PTYPE2_PKG_COUNT = 6,
 	ACPI_PTYPE2_FIXED = 7,
 	ACPI_PTYPE2_MIN = 8,
-	ACPI_PTYPE2_REV_FIXED = 9
+	ACPI_PTYPE2_REV_FIXED = 9,
+	ACPI_PTYPE2_FIX_VAR = 10
 };
 
 #ifdef ACPI_CREATE_PREDEFINED_TABLE
@@ -154,6 +163,7 @@
 	{{"_AC8", 0, ACPI_RTYPE_INTEGER}},
 	{{"_AC9", 0, ACPI_RTYPE_INTEGER}},
 	{{"_ADR", 0, ACPI_RTYPE_INTEGER}},
+	{{"_AEI", 0, ACPI_RTYPE_BUFFER}},
 	{{"_AL0", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Refs) */
 			  {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0,0}, 0,0}},
 
@@ -229,6 +239,13 @@
 	{{"_CID", 0, ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING | ACPI_RTYPE_PACKAGE}}, /* Variable-length (Ints/Strs) */
 			  {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING, 0,0}, 0,0}},
 
+	{{"_CLS", 0, ACPI_RTYPE_PACKAGE}},	/* Fixed-length (3 Int) */
+	{{{ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 3, 0}, 0, 0}},
+
+	{{"_CPC", 0, ACPI_RTYPE_PACKAGE}},	/* Variable-length (Ints/Bufs) */
+	{{{ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER | ACPI_RTYPE_BUFFER, 0, 0}, 0,
+	  0}},
+
 	{{"_CRS", 0, ACPI_RTYPE_BUFFER}},
 	{{"_CRT", 0, ACPI_RTYPE_INTEGER}},
 	{{"_CSD", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (1 Int(n), n-1 Int) */
@@ -237,12 +254,21 @@
 	{{"_CST", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (1 Int(n), n Pkg (1 Buf/3 Int) */
 			  {{{ACPI_PTYPE2_PKG_COUNT,ACPI_RTYPE_BUFFER, 1, ACPI_RTYPE_INTEGER}, 3,0}},
 
+	{{"_CWS", 1, ACPI_RTYPE_INTEGER}},
 	{{"_DCK", 1, ACPI_RTYPE_INTEGER}},
 	{{"_DCS", 0, ACPI_RTYPE_INTEGER}},
 	{{"_DDC", 1, ACPI_RTYPE_INTEGER | ACPI_RTYPE_BUFFER}},
 	{{"_DDN", 0, ACPI_RTYPE_STRING}},
+	{{"_DEP", 0, ACPI_RTYPE_PACKAGE}},	/* Variable-length (Refs) */
+	{{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0}, 0, 0}},
+
 	{{"_DGS", 0, ACPI_RTYPE_INTEGER}},
 	{{"_DIS", 0, 0}},
+
+	{{"_DLM", 0, ACPI_RTYPE_PACKAGE}},	/* Variable-length (Pkgs) each (1 Ref, 0/1 Optional Buf/Ref) */
+	{{{ACPI_PTYPE2_FIX_VAR, ACPI_RTYPE_REFERENCE, 1,
+	   ACPI_RTYPE_REFERENCE | ACPI_RTYPE_BUFFER}, 0, 0}},
+
 	{{"_DMA", 0, ACPI_RTYPE_BUFFER}},
 	{{"_DOD", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Ints) */
 			  {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 0,0}, 0,0}},
@@ -262,6 +288,7 @@
 	{{"_EJ3", 1, 0}},
 	{{"_EJ4", 1, 0}},
 	{{"_EJD", 0, ACPI_RTYPE_STRING}},
+	{{"_EVT", 1, 0}},
 	{{"_FDE", 0, ACPI_RTYPE_BUFFER}},
 	{{"_FDI", 0, ACPI_RTYPE_PACKAGE}}, /* Fixed-length (16 Int) */
 			  {{{ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 16,0}, 0,0}},
@@ -281,14 +308,17 @@
 	{{{ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 3, 0}, 0, 0}},
 
 	{{"_GAI", 0, ACPI_RTYPE_INTEGER}},
+	{{"_GCP", 0, ACPI_RTYPE_INTEGER}},
 	{{"_GHL", 0, ACPI_RTYPE_INTEGER}},
 	{{"_GLK", 0, ACPI_RTYPE_INTEGER}},
 	{{"_GPD", 0, ACPI_RTYPE_INTEGER}},
 	{{"_GPE", 0, ACPI_RTYPE_INTEGER}}, /* _GPE method, not _GPE scope */
+	{{"_GRT", 0, ACPI_RTYPE_BUFFER}},
 	{{"_GSB", 0, ACPI_RTYPE_INTEGER}},
 	{{"_GTF", 0, ACPI_RTYPE_BUFFER}},
 	{{"_GTM", 0, ACPI_RTYPE_BUFFER}},
 	{{"_GTS", 1, 0}},
+	{{"_GWS", 1, ACPI_RTYPE_INTEGER}},
 	{{"_HID", 0, ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING}},
 	{{"_HOT", 0, ACPI_RTYPE_INTEGER}},
 	{{"_HPP", 0, ACPI_RTYPE_PACKAGE}}, /* Fixed-length (4 Int) */
@@ -303,6 +333,7 @@
 	{{"_HPX", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Pkgs) each (var Ints) */
 			  {{{ACPI_PTYPE2_MIN, ACPI_RTYPE_INTEGER, 5,0}, 0,0}},
 
+	{{"_HRV", 0, ACPI_RTYPE_INTEGER}},
 	{{"_IFT", 0, ACPI_RTYPE_INTEGER}}, /* See IPMI spec */
 	{{"_INI", 0, 0}},
 	{{"_IRC", 0, 0}},
@@ -361,6 +392,9 @@
 	{{"_PR3", 0, ACPI_RTYPE_PACKAGE}},	/* Variable-length (Refs) */
 	{{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0}, 0, 0}},
 
+	{{"_PRE", 0, ACPI_RTYPE_PACKAGE}},	/* Variable-length (Refs) */
+	{{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0}, 0, 0}},
+
 	{{"_PRL", 0, ACPI_RTYPE_PACKAGE}},	/* Variable-length (Refs) */
 	{{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0}, 0, 0}},
 
@@ -391,6 +425,7 @@
 	{{"_PSD", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Pkgs) each (5 Int) with count */
 			  {{{ACPI_PTYPE2_COUNT, ACPI_RTYPE_INTEGER,0,0}, 0,0}},
 
+	{{"_PSE", 1, 0}},
 	{{"_PSL", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Refs) */
 			  {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0,0}, 0,0}},
 
@@ -457,6 +492,7 @@
 	{{"_SLI", 0, ACPI_RTYPE_BUFFER}},
 	{{"_SPD", 1, ACPI_RTYPE_INTEGER}},
 	{{"_SRS", 1, 0}},
+	{{"_SRT", 1, ACPI_RTYPE_INTEGER}},
 	{{"_SRV", 0, ACPI_RTYPE_INTEGER}}, /* See IPMI spec */
 	{{"_SST", 1, 0}},
 	{{"_STA", 0, ACPI_RTYPE_INTEGER}},
@@ -464,6 +500,7 @@
 	{{"_STP", 2, ACPI_RTYPE_INTEGER}},
 	{{"_STR", 0, ACPI_RTYPE_BUFFER}},
 	{{"_STV", 2, ACPI_RTYPE_INTEGER}},
+	{{"_SUB", 0, ACPI_RTYPE_STRING}},
 	{{"_SUN", 0, ACPI_RTYPE_INTEGER}},
 	{{"_SWS", 0, ACPI_RTYPE_INTEGER}},
 	{{"_TC1", 0, ACPI_RTYPE_INTEGER}},
diff --git a/drivers/acpi/acpica/acresrc.h b/drivers/acpi/acpica/acresrc.h
index f08b55b..0347d09 100644
--- a/drivers/acpi/acpica/acresrc.h
+++ b/drivers/acpi/acpica/acresrc.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -73,28 +73,40 @@
 
 /* Resource conversion opcodes */
 
-#define ACPI_RSC_INITGET                0
-#define ACPI_RSC_INITSET                1
-#define ACPI_RSC_FLAGINIT               2
-#define ACPI_RSC_1BITFLAG               3
-#define ACPI_RSC_2BITFLAG               4
-#define ACPI_RSC_COUNT                  5
-#define ACPI_RSC_COUNT16                6
-#define ACPI_RSC_LENGTH                 7
-#define ACPI_RSC_MOVE8                  8
-#define ACPI_RSC_MOVE16                 9
-#define ACPI_RSC_MOVE32                 10
-#define ACPI_RSC_MOVE64                 11
-#define ACPI_RSC_SET8                   12
-#define ACPI_RSC_DATA8                  13
-#define ACPI_RSC_ADDRESS                14
-#define ACPI_RSC_SOURCE                 15
-#define ACPI_RSC_SOURCEX                16
-#define ACPI_RSC_BITMASK                17
-#define ACPI_RSC_BITMASK16              18
-#define ACPI_RSC_EXIT_NE                19
-#define ACPI_RSC_EXIT_LE                20
-#define ACPI_RSC_EXIT_EQ                21
+typedef enum {
+	ACPI_RSC_INITGET = 0,
+	ACPI_RSC_INITSET,
+	ACPI_RSC_FLAGINIT,
+	ACPI_RSC_1BITFLAG,
+	ACPI_RSC_2BITFLAG,
+	ACPI_RSC_3BITFLAG,
+	ACPI_RSC_ADDRESS,
+	ACPI_RSC_BITMASK,
+	ACPI_RSC_BITMASK16,
+	ACPI_RSC_COUNT,
+	ACPI_RSC_COUNT16,
+	ACPI_RSC_COUNT_GPIO_PIN,
+	ACPI_RSC_COUNT_GPIO_RES,
+	ACPI_RSC_COUNT_GPIO_VEN,
+	ACPI_RSC_COUNT_SERIAL_RES,
+	ACPI_RSC_COUNT_SERIAL_VEN,
+	ACPI_RSC_DATA8,
+	ACPI_RSC_EXIT_EQ,
+	ACPI_RSC_EXIT_LE,
+	ACPI_RSC_EXIT_NE,
+	ACPI_RSC_LENGTH,
+	ACPI_RSC_MOVE_GPIO_PIN,
+	ACPI_RSC_MOVE_GPIO_RES,
+	ACPI_RSC_MOVE_SERIAL_RES,
+	ACPI_RSC_MOVE_SERIAL_VEN,
+	ACPI_RSC_MOVE8,
+	ACPI_RSC_MOVE16,
+	ACPI_RSC_MOVE32,
+	ACPI_RSC_MOVE64,
+	ACPI_RSC_SET8,
+	ACPI_RSC_SOURCE,
+	ACPI_RSC_SOURCEX
+} ACPI_RSCONVERT_OPCODES;
 
 /* Resource Conversion sub-opcodes */
 
@@ -106,6 +118,9 @@
 #define ACPI_RS_OFFSET(f)               (u8) ACPI_OFFSET (struct acpi_resource,f)
 #define AML_OFFSET(f)                   (u8) ACPI_OFFSET (union aml_resource,f)
 
+/*
+ * Individual entry for the resource dump tables
+ */
 typedef const struct acpi_rsdump_info {
 	u8 opcode;
 	u8 offset;
@@ -116,20 +131,25 @@
 
 /* Values for the Opcode field above */
 
-#define ACPI_RSD_TITLE                  0
-#define ACPI_RSD_LITERAL                1
-#define ACPI_RSD_STRING                 2
-#define ACPI_RSD_UINT8                  3
-#define ACPI_RSD_UINT16                 4
-#define ACPI_RSD_UINT32                 5
-#define ACPI_RSD_UINT64                 6
-#define ACPI_RSD_1BITFLAG               7
-#define ACPI_RSD_2BITFLAG               8
-#define ACPI_RSD_SHORTLIST              9
-#define ACPI_RSD_LONGLIST               10
-#define ACPI_RSD_DWORDLIST              11
-#define ACPI_RSD_ADDRESS                12
-#define ACPI_RSD_SOURCE                 13
+typedef enum {
+	ACPI_RSD_TITLE = 0,
+	ACPI_RSD_1BITFLAG,
+	ACPI_RSD_2BITFLAG,
+	ACPI_RSD_3BITFLAG,
+	ACPI_RSD_ADDRESS,
+	ACPI_RSD_DWORDLIST,
+	ACPI_RSD_LITERAL,
+	ACPI_RSD_LONGLIST,
+	ACPI_RSD_SHORTLIST,
+	ACPI_RSD_SHORTLISTX,
+	ACPI_RSD_SOURCE,
+	ACPI_RSD_STRING,
+	ACPI_RSD_UINT8,
+	ACPI_RSD_UINT16,
+	ACPI_RSD_UINT32,
+	ACPI_RSD_UINT64,
+	ACPI_RSD_WORDLIST
+} ACPI_RSDUMP_OPCODES;
 
 /* restore default alignment */
 
@@ -138,13 +158,18 @@
 /* Resource tables indexed by internal resource type */
 
 extern const u8 acpi_gbl_aml_resource_sizes[];
+extern const u8 acpi_gbl_aml_resource_serial_bus_sizes[];
 extern struct acpi_rsconvert_info *acpi_gbl_set_resource_dispatch[];
 
 /* Resource tables indexed by raw AML resource descriptor type */
 
 extern const u8 acpi_gbl_resource_struct_sizes[];
+extern const u8 acpi_gbl_resource_struct_serial_bus_sizes[];
 extern struct acpi_rsconvert_info *acpi_gbl_get_resource_dispatch[];
 
+extern struct acpi_rsconvert_info
+    *acpi_gbl_convert_resource_serial_bus_dispatch[];
+
 struct acpi_vendor_walk_info {
 	struct acpi_vendor_uuid *uuid;
 	struct acpi_buffer *buffer;
@@ -190,6 +215,10 @@
 acpi_rs_set_srs_method_data(struct acpi_namespace_node *node,
 			    struct acpi_buffer *ret_buffer);
 
+acpi_status
+acpi_rs_get_aei_method_data(struct acpi_namespace_node *node,
+			    struct acpi_buffer *ret_buffer);
+
 /*
  * rscalc
  */
@@ -293,6 +322,11 @@
 extern struct acpi_rsconvert_info acpi_rs_convert_ext_irq[];
 extern struct acpi_rsconvert_info acpi_rs_convert_address64[];
 extern struct acpi_rsconvert_info acpi_rs_convert_ext_address64[];
+extern struct acpi_rsconvert_info acpi_rs_convert_gpio[];
+extern struct acpi_rsconvert_info acpi_rs_convert_fixed_dma[];
+extern struct acpi_rsconvert_info acpi_rs_convert_i2c_serial_bus[];
+extern struct acpi_rsconvert_info acpi_rs_convert_spi_serial_bus[];
+extern struct acpi_rsconvert_info acpi_rs_convert_uart_serial_bus[];
 
 /* These resources require separate get/set tables */
 
@@ -310,6 +344,7 @@
  * rsinfo
  */
 extern struct acpi_rsdump_info *acpi_gbl_dump_resource_dispatch[];
+extern struct acpi_rsdump_info *acpi_gbl_dump_serial_bus_dispatch[];
 
 /*
  * rsdump
@@ -331,6 +366,12 @@
 extern struct acpi_rsdump_info acpi_rs_dump_ext_address64[];
 extern struct acpi_rsdump_info acpi_rs_dump_ext_irq[];
 extern struct acpi_rsdump_info acpi_rs_dump_generic_reg[];
+extern struct acpi_rsdump_info acpi_rs_dump_gpio[];
+extern struct acpi_rsdump_info acpi_rs_dump_fixed_dma[];
+extern struct acpi_rsdump_info acpi_rs_dump_common_serial_bus[];
+extern struct acpi_rsdump_info acpi_rs_dump_i2c_serial_bus[];
+extern struct acpi_rsdump_info acpi_rs_dump_spi_serial_bus[];
+extern struct acpi_rsdump_info acpi_rs_dump_uart_serial_bus[];
 #endif
 
 #endif				/* __ACRESRC_H__ */
diff --git a/drivers/acpi/acpica/acstruct.h b/drivers/acpi/acpica/acstruct.h
index 1623b24..0404df6 100644
--- a/drivers/acpi/acpica/acstruct.h
+++ b/drivers/acpi/acpica/acstruct.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/actables.h b/drivers/acpi/acpica/actables.h
index 967f081..d5bec30 100644
--- a/drivers/acpi/acpica/actables.h
+++ b/drivers/acpi/acpica/actables.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/acutils.h b/drivers/acpi/acpica/acutils.h
index 99c140d..925ccf2 100644
--- a/drivers/acpi/acpica/acutils.h
+++ b/drivers/acpi/acpica/acutils.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -45,6 +45,7 @@
 #define _ACUTILS_H
 
 extern const u8 acpi_gbl_resource_aml_sizes[];
+extern const u8 acpi_gbl_resource_aml_serial_bus_sizes[];
 
 /* Strings used by the disassembler and debugger resource dump routines */
 
@@ -579,6 +580,24 @@
 #endif				/* ACPI_DBG_TRACK_ALLOCATIONS */
 
 /*
+ * utaddress - address range check
+ */
+acpi_status
+acpi_ut_add_address_range(acpi_adr_space_type space_id,
+			  acpi_physical_address address,
+			  u32 length, struct acpi_namespace_node *region_node);
+
+void
+acpi_ut_remove_address_range(acpi_adr_space_type space_id,
+			     struct acpi_namespace_node *region_node);
+
+u32
+acpi_ut_check_address_range(acpi_adr_space_type space_id,
+			    acpi_physical_address address, u32 length, u8 warn);
+
+void acpi_ut_delete_address_lists(void);
+
+/*
  * utxferror - various error/warning output functions
  */
 void ACPI_INTERNAL_VAR_XFACE
diff --git a/drivers/acpi/acpica/amlcode.h b/drivers/acpi/acpica/amlcode.h
index 1077f17..905280f 100644
--- a/drivers/acpi/acpica/amlcode.h
+++ b/drivers/acpi/acpica/amlcode.h
@@ -7,7 +7,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -189,6 +189,14 @@
 #define AML_LNOTEQUAL_OP            (u16) 0x9293
 
 /*
+ * Opcodes for "Field" operators
+ */
+#define AML_FIELD_OFFSET_OP         (u8) 0x00
+#define AML_FIELD_ACCESS_OP         (u8) 0x01
+#define AML_FIELD_CONNECTION_OP     (u8) 0x02	/* ACPI 5.0 */
+#define AML_FIELD_EXT_ACCESS_OP     (u8) 0x03	/* ACPI 5.0 */
+
+/*
  * Internal opcodes
  * Use only "Unknown" AML opcodes, don't attempt to use
  * any valid ACPI ASCII values (A-Z, 0-9, '-')
@@ -202,6 +210,8 @@
 #define AML_INT_METHODCALL_OP       (u16) 0x0035
 #define AML_INT_RETURN_VALUE_OP     (u16) 0x0036
 #define AML_INT_EVAL_SUBTREE_OP     (u16) 0x0037
+#define AML_INT_CONNECTION_OP       (u16) 0x0038
+#define AML_INT_EXTACCESSFIELD_OP   (u16) 0x0039
 
 #define ARG_NONE                    0x0
 
@@ -456,13 +466,16 @@
  * access_as keyword
  */
 typedef enum {
-	AML_FIELD_ATTRIB_SMB_QUICK = 0x02,
-	AML_FIELD_ATTRIB_SMB_SEND_RCV = 0x04,
-	AML_FIELD_ATTRIB_SMB_BYTE = 0x06,
-	AML_FIELD_ATTRIB_SMB_WORD = 0x08,
-	AML_FIELD_ATTRIB_SMB_BLOCK = 0x0A,
-	AML_FIELD_ATTRIB_SMB_WORD_CALL = 0x0C,
-	AML_FIELD_ATTRIB_SMB_BLOCK_CALL = 0x0D
+	AML_FIELD_ATTRIB_QUICK = 0x02,
+	AML_FIELD_ATTRIB_SEND_RCV = 0x04,
+	AML_FIELD_ATTRIB_BYTE = 0x06,
+	AML_FIELD_ATTRIB_WORD = 0x08,
+	AML_FIELD_ATTRIB_BLOCK = 0x0A,
+	AML_FIELD_ATTRIB_MULTIBYTE = 0x0B,
+	AML_FIELD_ATTRIB_WORD_CALL = 0x0C,
+	AML_FIELD_ATTRIB_BLOCK_CALL = 0x0D,
+	AML_FIELD_ATTRIB_RAW_BYTES = 0x0E,
+	AML_FIELD_ATTRIB_RAW_PROCESS = 0x0F
 } AML_ACCESS_ATTRIBUTE;
 
 /* Bit fields in the AML method_flags byte */
diff --git a/drivers/acpi/acpica/amlresrc.h b/drivers/acpi/acpica/amlresrc.h
index 59122cd..7b2128f 100644
--- a/drivers/acpi/acpica/amlresrc.h
+++ b/drivers/acpi/acpica/amlresrc.h
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -58,29 +58,48 @@
 #define ACPI_RESTAG_TYPESPECIFICATTRIBUTES      "_ATT"
 #define ACPI_RESTAG_BASEADDRESS                 "_BAS"
 #define ACPI_RESTAG_BUSMASTER                   "_BM_"	/* Master(1), Slave(0) */
+#define ACPI_RESTAG_DEBOUNCETIME                "_DBT"
 #define ACPI_RESTAG_DECODE                      "_DEC"
+#define ACPI_RESTAG_DEVICEPOLARITY              "_DPL"
 #define ACPI_RESTAG_DMA                         "_DMA"
 #define ACPI_RESTAG_DMATYPE                     "_TYP"	/* Compatible(0), A(1), B(2), F(3) */
+#define ACPI_RESTAG_DRIVESTRENGTH               "_DRS"
+#define ACPI_RESTAG_ENDIANNESS                  "_END"
+#define ACPI_RESTAG_FLOWCONTROL                 "_FLC"
 #define ACPI_RESTAG_GRANULARITY                 "_GRA"
 #define ACPI_RESTAG_INTERRUPT                   "_INT"
 #define ACPI_RESTAG_INTERRUPTLEVEL              "_LL_"	/* active_lo(1), active_hi(0) */
 #define ACPI_RESTAG_INTERRUPTSHARE              "_SHR"	/* Shareable(1), no_share(0) */
 #define ACPI_RESTAG_INTERRUPTTYPE               "_HE_"	/* Edge(1), Level(0) */
+#define ACPI_RESTAG_IORESTRICTION               "_IOR"
 #define ACPI_RESTAG_LENGTH                      "_LEN"
+#define ACPI_RESTAG_LINE                        "_LIN"
 #define ACPI_RESTAG_MEMATTRIBUTES               "_MTP"	/* Memory(0), Reserved(1), ACPI(2), NVS(3) */
 #define ACPI_RESTAG_MEMTYPE                     "_MEM"	/* non_cache(0), Cacheable(1) Cache+combine(2), Cache+prefetch(3) */
 #define ACPI_RESTAG_MAXADDR                     "_MAX"
 #define ACPI_RESTAG_MINADDR                     "_MIN"
 #define ACPI_RESTAG_MAXTYPE                     "_MAF"
 #define ACPI_RESTAG_MINTYPE                     "_MIF"
+#define ACPI_RESTAG_MODE                        "_MOD"
+#define ACPI_RESTAG_PARITY                      "_PAR"
+#define ACPI_RESTAG_PHASE                       "_PHA"
+#define ACPI_RESTAG_PIN                         "_PIN"
+#define ACPI_RESTAG_PINCONFIG                   "_PPI"
+#define ACPI_RESTAG_POLARITY                    "_POL"
 #define ACPI_RESTAG_REGISTERBITOFFSET           "_RBO"
 #define ACPI_RESTAG_REGISTERBITWIDTH            "_RBW"
 #define ACPI_RESTAG_RANGETYPE                   "_RNG"
 #define ACPI_RESTAG_READWRITETYPE               "_RW_"	/* read_only(0), Writeable (1) */
+#define ACPI_RESTAG_LENGTH_RX                   "_RXL"
+#define ACPI_RESTAG_LENGTH_TX                   "_TXL"
+#define ACPI_RESTAG_SLAVEMODE                   "_SLV"
+#define ACPI_RESTAG_SPEED                       "_SPE"
+#define ACPI_RESTAG_STOPBITS                    "_STB"
 #define ACPI_RESTAG_TRANSLATION                 "_TRA"
 #define ACPI_RESTAG_TRANSTYPE                   "_TRS"	/* Sparse(1), Dense(0) */
 #define ACPI_RESTAG_TYPE                        "_TTP"	/* Translation(1), Static (0) */
 #define ACPI_RESTAG_XFERTYPE                    "_SIZ"	/* 8(0), 8_and16(1), 16(2) */
+#define ACPI_RESTAG_VENDORDATA                  "_VEN"
 
 /* Default sizes for "small" resource descriptors */
 
@@ -90,6 +109,7 @@
 #define ASL_RDESC_END_DEPEND_SIZE               0x00
 #define ASL_RDESC_IO_SIZE                       0x07
 #define ASL_RDESC_FIXED_IO_SIZE                 0x03
+#define ASL_RDESC_FIXED_DMA_SIZE                0x05
 #define ASL_RDESC_END_TAG_SIZE                  0x01
 
 struct asl_resource_node {
@@ -164,6 +184,12 @@
 	AML_RESOURCE_SMALL_HEADER_COMMON u8 checksum;
 };
 
+struct aml_resource_fixed_dma {
+	AML_RESOURCE_SMALL_HEADER_COMMON u16 request_lines;
+	u16 channels;
+	u8 width;
+};
+
 /*
  * LARGE descriptors
  */
@@ -263,6 +289,110 @@
 	u64 address;
 };
 
+/* Common descriptor for gpio_int and gpio_io (ACPI 5.0) */
+
+struct aml_resource_gpio {
+	AML_RESOURCE_LARGE_HEADER_COMMON u8 revision_id;
+	u8 connection_type;
+	u16 flags;
+	u16 int_flags;
+	u8 pin_config;
+	u16 drive_strength;
+	u16 debounce_timeout;
+	u16 pin_table_offset;
+	u8 res_source_index;
+	u16 res_source_offset;
+	u16 vendor_offset;
+	u16 vendor_length;
+	/*
+	 * Optional fields follow immediately:
+	 * 1) PIN list (Words)
+	 * 2) Resource Source String
+	 * 3) Vendor Data bytes
+	 */
+};
+
+#define AML_RESOURCE_GPIO_REVISION              1	/* ACPI 5.0 */
+
+/* Values for connection_type above */
+
+#define AML_RESOURCE_GPIO_TYPE_INT              0
+#define AML_RESOURCE_GPIO_TYPE_IO               1
+#define AML_RESOURCE_MAX_GPIOTYPE               1
+
+/* Common preamble for all serial descriptors (ACPI 5.0) */
+
+#define AML_RESOURCE_SERIAL_COMMON \
+	u8                              revision_id; \
+	u8                              res_source_index; \
+	u8                              type; \
+	u8                              flags; \
+	u16                             type_specific_flags; \
+	u8                              type_revision_id; \
+	u16                             type_data_length; \
+
+/* Values for the type field above */
+
+#define AML_RESOURCE_I2C_SERIALBUSTYPE          1
+#define AML_RESOURCE_SPI_SERIALBUSTYPE          2
+#define AML_RESOURCE_UART_SERIALBUSTYPE         3
+#define AML_RESOURCE_MAX_SERIALBUSTYPE          3
+#define AML_RESOURCE_VENDOR_SERIALBUSTYPE       192	/* Vendor defined is 0xC0-0xFF (NOT SUPPORTED) */
+
+struct aml_resource_common_serialbus {
+AML_RESOURCE_LARGE_HEADER_COMMON AML_RESOURCE_SERIAL_COMMON};
+
+struct aml_resource_i2c_serialbus {
+	AML_RESOURCE_LARGE_HEADER_COMMON
+	    AML_RESOURCE_SERIAL_COMMON u32 connection_speed;
+	u16 slave_address;
+	/*
+	 * Optional fields follow immediately:
+	 * 1) Vendor Data bytes
+	 * 2) Resource Source String
+	 */
+};
+
+#define AML_RESOURCE_I2C_REVISION               1	/* ACPI 5.0 */
+#define AML_RESOURCE_I2C_TYPE_REVISION          1	/* ACPI 5.0 */
+#define AML_RESOURCE_I2C_MIN_DATA_LEN           6
+
+struct aml_resource_spi_serialbus {
+	AML_RESOURCE_LARGE_HEADER_COMMON
+	    AML_RESOURCE_SERIAL_COMMON u32 connection_speed;
+	u8 data_bit_length;
+	u8 clock_phase;
+	u8 clock_polarity;
+	u16 device_selection;
+	/*
+	 * Optional fields follow immediately:
+	 * 1) Vendor Data bytes
+	 * 2) Resource Source String
+	 */
+};
+
+#define AML_RESOURCE_SPI_REVISION               1	/* ACPI 5.0 */
+#define AML_RESOURCE_SPI_TYPE_REVISION          1	/* ACPI 5.0 */
+#define AML_RESOURCE_SPI_MIN_DATA_LEN           9
+
+struct aml_resource_uart_serialbus {
+	AML_RESOURCE_LARGE_HEADER_COMMON
+	    AML_RESOURCE_SERIAL_COMMON u32 default_baud_rate;
+	u16 rx_fifo_size;
+	u16 tx_fifo_size;
+	u8 parity;
+	u8 lines_enabled;
+	/*
+	 * Optional fields follow immediately:
+	 * 1) Vendor Data bytes
+	 * 2) Resource Source String
+	 */
+};
+
+#define AML_RESOURCE_UART_REVISION              1	/* ACPI 5.0 */
+#define AML_RESOURCE_UART_TYPE_REVISION         1	/* ACPI 5.0 */
+#define AML_RESOURCE_UART_MIN_DATA_LEN          10
+
 /* restore default alignment */
 
 #pragma pack()
@@ -284,6 +414,7 @@
 	struct aml_resource_end_dependent end_dpf;
 	struct aml_resource_io io;
 	struct aml_resource_fixed_io fixed_io;
+	struct aml_resource_fixed_dma fixed_dma;
 	struct aml_resource_vendor_small vendor_small;
 	struct aml_resource_end_tag end_tag;
 
@@ -299,6 +430,11 @@
 	struct aml_resource_address64 address64;
 	struct aml_resource_extended_address64 ext_address64;
 	struct aml_resource_extended_irq extended_irq;
+	struct aml_resource_gpio gpio;
+	struct aml_resource_i2c_serialbus i2c_serial_bus;
+	struct aml_resource_spi_serialbus spi_serial_bus;
+	struct aml_resource_uart_serialbus uart_serial_bus;
+	struct aml_resource_common_serialbus common_serial_bus;
 
 	/* Utility overlays */
 
diff --git a/drivers/acpi/acpica/dsargs.c b/drivers/acpi/acpica/dsargs.c
index 8c7b997..80eb190 100644
--- a/drivers/acpi/acpica/dsargs.c
+++ b/drivers/acpi/acpica/dsargs.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -250,6 +250,13 @@
 	status = acpi_ds_execute_arguments(node, node->parent,
 					   extra_desc->extra.aml_length,
 					   extra_desc->extra.aml_start);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	status = acpi_ut_add_address_range(obj_desc->region.space_id,
+					   obj_desc->region.address,
+					   obj_desc->region.length, node);
 	return_ACPI_STATUS(status);
 }
 
@@ -384,8 +391,15 @@
 
 	/* Execute the argument AML */
 
-	status = acpi_ds_execute_arguments(node, node->parent,
+	status = acpi_ds_execute_arguments(node, extra_desc->extra.scope_node,
 					   extra_desc->extra.aml_length,
 					   extra_desc->extra.aml_start);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	status = acpi_ut_add_address_range(obj_desc->region.space_id,
+					   obj_desc->region.address,
+					   obj_desc->region.length, node);
 	return_ACPI_STATUS(status);
 }
diff --git a/drivers/acpi/acpica/dscontrol.c b/drivers/acpi/acpica/dscontrol.c
index 26c49ff..effe4ca 100644
--- a/drivers/acpi/acpica/dscontrol.c
+++ b/drivers/acpi/acpica/dscontrol.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/dsfield.c b/drivers/acpi/acpica/dsfield.c
index 34be60c..cd243cf 100644
--- a/drivers/acpi/acpica/dsfield.c
+++ b/drivers/acpi/acpica/dsfield.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -221,6 +221,7 @@
 {
 	acpi_status status;
 	u64 position;
+	union acpi_parse_object *child;
 
 	ACPI_FUNCTION_TRACE_PTR(ds_get_field_names, info);
 
@@ -232,10 +233,11 @@
 
 	while (arg) {
 		/*
-		 * Three types of field elements are handled:
-		 * 1) Offset - specifies a bit offset
-		 * 2) access_as - changes the access mode
-		 * 3) Name - Enters a new named field into the namespace
+		 * Four types of field elements are handled:
+		 * 1) Name - Enters a new named field into the namespace
+		 * 2) Offset - specifies a bit offset
+		 * 3) access_as - changes the access mode/attributes
+		 * 4) Connection - Associate a resource template with the field
 		 */
 		switch (arg->common.aml_opcode) {
 		case AML_INT_RESERVEDFIELD_OP:
@@ -253,21 +255,70 @@
 			break;
 
 		case AML_INT_ACCESSFIELD_OP:
-
+		case AML_INT_EXTACCESSFIELD_OP:
 			/*
-			 * Get a new access_type and access_attribute -- to be used for all
-			 * field units that follow, until field end or another access_as
-			 * keyword.
+			 * Get new access_type, access_attribute, and access_length fields
+			 * -- to be used for all field units that follow, until the
+			 * end-of-field or another access_as keyword is encountered.
+			 * NOTE. These three bytes are encoded in the integer value
+			 * of the parseop for convenience.
 			 *
 			 * In field_flags, preserve the flag bits other than the
-			 * ACCESS_TYPE bits
+			 * ACCESS_TYPE bits.
 			 */
+
+			/* access_type (byte_acc, word_acc, etc.) */
+
 			info->field_flags = (u8)
 			    ((info->
 			      field_flags & ~(AML_FIELD_ACCESS_TYPE_MASK)) |
-			     ((u8) ((u32) arg->common.value.integer >> 8)));
+			     ((u8)((u32)(arg->common.value.integer & 0x07))));
 
-			info->attribute = (u8) (arg->common.value.integer);
+			/* access_attribute (attrib_quick, attrib_byte, etc.) */
+
+			info->attribute =
+			    (u8)((arg->common.value.integer >> 8) & 0xFF);
+
+			/* access_length (for serial/buffer protocols) */
+
+			info->access_length =
+			    (u8)((arg->common.value.integer >> 16) & 0xFF);
+			break;
+
+		case AML_INT_CONNECTION_OP:
+			/*
+			 * Clear any previous connection. New connection is used for all
+			 * fields that follow, similar to access_as
+			 */
+			info->resource_buffer = NULL;
+			info->connection_node = NULL;
+
+			/*
+			 * A Connection() is either an actual resource descriptor (buffer)
+			 * or a named reference to a resource template
+			 */
+			child = arg->common.value.arg;
+			if (child->common.aml_opcode == AML_INT_BYTELIST_OP) {
+				info->resource_buffer = child->named.data;
+				info->resource_length =
+				    (u16)child->named.value.integer;
+			} else {
+				/* Lookup the Connection() namepath, it should already exist */
+
+				status = acpi_ns_lookup(walk_state->scope_info,
+							child->common.value.
+							name, ACPI_TYPE_ANY,
+							ACPI_IMODE_EXECUTE,
+							ACPI_NS_DONT_OPEN_SCOPE,
+							walk_state,
+							&info->connection_node);
+				if (ACPI_FAILURE(status)) {
+					ACPI_ERROR_NAMESPACE(child->common.
+							     value.name,
+							     status);
+					return_ACPI_STATUS(status);
+				}
+			}
 			break;
 
 		case AML_INT_NAMEDFIELD_OP:
@@ -374,6 +425,8 @@
 		}
 	}
 
+	ACPI_MEMSET(&info, 0, sizeof(struct acpi_create_field_info));
+
 	/* Second arg is the field flags */
 
 	arg = arg->common.next;
@@ -386,7 +439,6 @@
 	info.region_node = region_node;
 
 	status = acpi_ds_get_field_names(&info, walk_state, arg->common.next);
-
 	return_ACPI_STATUS(status);
 }
 
@@ -474,8 +526,8 @@
 	 */
 	while (arg) {
 		/*
-		 * Ignore OFFSET and ACCESSAS terms here; we are only interested in the
-		 * field names in order to enter them into the namespace.
+		 * Ignore OFFSET/ACCESSAS/CONNECTION terms here; we are only interested
+		 * in the field names in order to enter them into the namespace.
 		 */
 		if (arg->common.aml_opcode == AML_INT_NAMEDFIELD_OP) {
 			status = acpi_ns_lookup(walk_state->scope_info,
@@ -651,6 +703,5 @@
 	info.region_node = region_node;
 
 	status = acpi_ds_get_field_names(&info, walk_state, arg->common.next);
-
 	return_ACPI_STATUS(status);
 }
diff --git a/drivers/acpi/acpica/dsinit.c b/drivers/acpi/acpica/dsinit.c
index a7718bf..9e5ac7f 100644
--- a/drivers/acpi/acpica/dsinit.c
+++ b/drivers/acpi/acpica/dsinit.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/dsmethod.c b/drivers/acpi/acpica/dsmethod.c
index 5d79775..00f5dab 100644
--- a/drivers/acpi/acpica/dsmethod.c
+++ b/drivers/acpi/acpica/dsmethod.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/dsmthdat.c b/drivers/acpi/acpica/dsmthdat.c
index 905ce29..b40bd50 100644
--- a/drivers/acpi/acpica/dsmthdat.c
+++ b/drivers/acpi/acpica/dsmthdat.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/dsobject.c b/drivers/acpi/acpica/dsobject.c
index f42e17e..d7045ca 100644
--- a/drivers/acpi/acpica/dsobject.c
+++ b/drivers/acpi/acpica/dsobject.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/dsopcode.c b/drivers/acpi/acpica/dsopcode.c
index c627a28..e5eff75 100644
--- a/drivers/acpi/acpica/dsopcode.c
+++ b/drivers/acpi/acpica/dsopcode.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/dsutils.c b/drivers/acpi/acpica/dsutils.c
index 2c477ce..1abcda3 100644
--- a/drivers/acpi/acpica/dsutils.c
+++ b/drivers/acpi/acpica/dsutils.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/dswexec.c b/drivers/acpi/acpica/dswexec.c
index fe40e4c..642f3c0 100644
--- a/drivers/acpi/acpica/dswexec.c
+++ b/drivers/acpi/acpica/dswexec.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/dswload.c b/drivers/acpi/acpica/dswload.c
index 324acec..552aa3a 100644
--- a/drivers/acpi/acpica/dswload.c
+++ b/drivers/acpi/acpica/dswload.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/dswload2.c b/drivers/acpi/acpica/dswload2.c
index 9763181..ae71477 100644
--- a/drivers/acpi/acpica/dswload2.c
+++ b/drivers/acpi/acpica/dswload2.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/dswscope.c b/drivers/acpi/acpica/dswscope.c
index 76a661f..9e9490a 100644
--- a/drivers/acpi/acpica/dswscope.c
+++ b/drivers/acpi/acpica/dswscope.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/dswstate.c b/drivers/acpi/acpica/dswstate.c
index a6c374e..c9c2ac1 100644
--- a/drivers/acpi/acpica/dswstate.c
+++ b/drivers/acpi/acpica/dswstate.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/evevent.c b/drivers/acpi/acpica/evevent.c
index d458b04..6729ebe 100644
--- a/drivers/acpi/acpica/evevent.c
+++ b/drivers/acpi/acpica/evevent.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -71,6 +71,12 @@
 
 	ACPI_FUNCTION_TRACE(ev_initialize_events);
 
+	/* If Hardware Reduced flag is set, there are no fixed events */
+
+	if (acpi_gbl_reduced_hardware) {
+		return_ACPI_STATUS(AE_OK);
+	}
+
 	/*
 	 * Initialize the Fixed and General Purpose Events. This is done prior to
 	 * enabling SCIs to prevent interrupts from occurring before the handlers
@@ -111,6 +117,12 @@
 
 	ACPI_FUNCTION_TRACE(ev_install_xrupt_handlers);
 
+	/* If Hardware Reduced flag is set, there is no ACPI h/w */
+
+	if (acpi_gbl_reduced_hardware) {
+		return_ACPI_STATUS(AE_OK);
+	}
+
 	/* Install the SCI handler */
 
 	status = acpi_ev_install_sci_handler();
diff --git a/drivers/acpi/acpica/evglock.c b/drivers/acpi/acpica/evglock.c
index 56a562a..5e5683c 100644
--- a/drivers/acpi/acpica/evglock.c
+++ b/drivers/acpi/acpica/evglock.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -70,6 +70,12 @@
 
 	ACPI_FUNCTION_TRACE(ev_init_global_lock_handler);
 
+	/* If Hardware Reduced flag is set, there is no global lock */
+
+	if (acpi_gbl_reduced_hardware) {
+		return_ACPI_STATUS(AE_OK);
+	}
+
 	/* Attempt installation of the global lock handler */
 
 	status = acpi_install_fixed_event_handler(ACPI_EVENT_GLOBAL,
diff --git a/drivers/acpi/acpica/evgpe.c b/drivers/acpi/acpica/evgpe.c
index 65c79ad..9e88cb6 100644
--- a/drivers/acpi/acpica/evgpe.c
+++ b/drivers/acpi/acpica/evgpe.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/evgpeblk.c b/drivers/acpi/acpica/evgpeblk.c
index ca2c41a..be75339 100644
--- a/drivers/acpi/acpica/evgpeblk.c
+++ b/drivers/acpi/acpica/evgpeblk.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/evgpeinit.c b/drivers/acpi/acpica/evgpeinit.c
index ce9aa9f..adf7494 100644
--- a/drivers/acpi/acpica/evgpeinit.c
+++ b/drivers/acpi/acpica/evgpeinit.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/evgpeutil.c b/drivers/acpi/acpica/evgpeutil.c
index 80a81d0..2507393 100644
--- a/drivers/acpi/acpica/evgpeutil.c
+++ b/drivers/acpi/acpica/evgpeutil.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/evmisc.c b/drivers/acpi/acpica/evmisc.c
index d0b3318..84966f4 100644
--- a/drivers/acpi/acpica/evmisc.c
+++ b/drivers/acpi/acpica/evmisc.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/evregion.c b/drivers/acpi/acpica/evregion.c
index f0edf5c..1b0180a 100644
--- a/drivers/acpi/acpica/evregion.c
+++ b/drivers/acpi/acpica/evregion.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -329,6 +329,7 @@
  * FUNCTION:    acpi_ev_address_space_dispatch
  *
  * PARAMETERS:  region_obj          - Internal region object
+ *              field_obj           - Corresponding field. Can be NULL.
  *              Function            - Read or Write operation
  *              region_offset       - Where in the region to read or write
  *              bit_width           - Field width in bits (8, 16, 32, or 64)
@@ -344,6 +345,7 @@
 
 acpi_status
 acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
+			       union acpi_operand_object *field_obj,
 			       u32 function,
 			       u32 region_offset, u32 bit_width, u64 *value)
 {
@@ -353,6 +355,7 @@
 	union acpi_operand_object *handler_desc;
 	union acpi_operand_object *region_obj2;
 	void *region_context = NULL;
+	struct acpi_connection_info *context;
 
 	ACPI_FUNCTION_TRACE(ev_address_space_dispatch);
 
@@ -375,6 +378,8 @@
 		return_ACPI_STATUS(AE_NOT_EXIST);
 	}
 
+	context = handler_desc->address_space.context;
+
 	/*
 	 * It may be the case that the region has never been initialized.
 	 * Some types of regions require special init code
@@ -404,8 +409,7 @@
 		acpi_ex_exit_interpreter();
 
 		status = region_setup(region_obj, ACPI_REGION_ACTIVATE,
-				      handler_desc->address_space.context,
-				      &region_context);
+				      context, &region_context);
 
 		/* Re-enter the interpreter */
 
@@ -455,6 +459,25 @@
 			  acpi_ut_get_region_name(region_obj->region.
 						  space_id)));
 
+	/*
+	 * Special handling for generic_serial_bus and general_purpose_io:
+	 * There are three extra parameters that must be passed to the
+	 * handler via the context:
+	 *   1) Connection buffer, a resource template from Connection() op.
+	 *   2) Length of the above buffer.
+	 *   3) Actual access length from the access_as() op.
+	 */
+	if (((region_obj->region.space_id == ACPI_ADR_SPACE_GSBUS) ||
+	     (region_obj->region.space_id == ACPI_ADR_SPACE_GPIO)) &&
+	    context && field_obj) {
+
+		/* Get the Connection (resource_template) buffer */
+
+		context->connection = field_obj->field.resource_buffer;
+		context->length = field_obj->field.resource_length;
+		context->access_length = field_obj->field.access_length;
+	}
+
 	if (!(handler_desc->address_space.handler_flags &
 	      ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) {
 		/*
@@ -469,7 +492,7 @@
 
 	status = handler(function,
 			 (region_obj->region.address + region_offset),
-			 bit_width, value, handler_desc->address_space.context,
+			 bit_width, value, context,
 			 region_obj2->extra.region_context);
 
 	if (ACPI_FAILURE(status)) {
diff --git a/drivers/acpi/acpica/evrgnini.c b/drivers/acpi/acpica/evrgnini.c
index 55a5d35..819c17f 100644
--- a/drivers/acpi/acpica/evrgnini.c
+++ b/drivers/acpi/acpica/evrgnini.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/evsci.c b/drivers/acpi/acpica/evsci.c
index 2ebd40e..26065c6 100644
--- a/drivers/acpi/acpica/evsci.c
+++ b/drivers/acpi/acpica/evsci.c
@@ -6,7 +6,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/evxface.c b/drivers/acpi/acpica/evxface.c
index f4f523b..61944e8 100644
--- a/drivers/acpi/acpica/evxface.c
+++ b/drivers/acpi/acpica/evxface.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/evxfevnt.c b/drivers/acpi/acpica/evxfevnt.c
index 20516e5..1768bbe 100644
--- a/drivers/acpi/acpica/evxfevnt.c
+++ b/drivers/acpi/acpica/evxfevnt.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/evxfgpe.c b/drivers/acpi/acpica/evxfgpe.c
index f06a3ee..33388fd 100644
--- a/drivers/acpi/acpica/evxfgpe.c
+++ b/drivers/acpi/acpica/evxfgpe.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/evxfregn.c b/drivers/acpi/acpica/evxfregn.c
index aee887e..6019208c 100644
--- a/drivers/acpi/acpica/evxfregn.c
+++ b/drivers/acpi/acpica/evxfregn.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exconfig.c b/drivers/acpi/acpica/exconfig.c
index 745a42b..c86d44e 100644
--- a/drivers/acpi/acpica/exconfig.c
+++ b/drivers/acpi/acpica/exconfig.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -297,9 +297,9 @@
 	/* Bytewise reads */
 
 	for (i = 0; i < length; i++) {
-		status = acpi_ev_address_space_dispatch(obj_desc, ACPI_READ,
-							region_offset, 8,
-							&value);
+		status =
+		    acpi_ev_address_space_dispatch(obj_desc, NULL, ACPI_READ,
+						   region_offset, 8, &value);
 		if (ACPI_FAILURE(status)) {
 			return status;
 		}
diff --git a/drivers/acpi/acpica/exconvrt.c b/drivers/acpi/acpica/exconvrt.c
index 74162a1..e385436 100644
--- a/drivers/acpi/acpica/exconvrt.c
+++ b/drivers/acpi/acpica/exconvrt.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/excreate.c b/drivers/acpi/acpica/excreate.c
index 110711a..3f5bc99 100644
--- a/drivers/acpi/acpica/excreate.c
+++ b/drivers/acpi/acpica/excreate.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -267,7 +267,7 @@
  *
  * PARAMETERS:  aml_start           - Pointer to the region declaration AML
  *              aml_length          - Max length of the declaration AML
- *              region_space        - space_iD for the region
+ *              space_id            - Address space ID for the region
  *              walk_state          - Current state
  *
  * RETURN:      Status
@@ -279,7 +279,7 @@
 acpi_status
 acpi_ex_create_region(u8 * aml_start,
 		      u32 aml_length,
-		      u8 region_space, struct acpi_walk_state *walk_state)
+		      u8 space_id, struct acpi_walk_state *walk_state)
 {
 	acpi_status status;
 	union acpi_operand_object *obj_desc;
@@ -304,16 +304,19 @@
 	 * Space ID must be one of the predefined IDs, or in the user-defined
 	 * range
 	 */
-	if ((region_space >= ACPI_NUM_PREDEFINED_REGIONS) &&
-	    (region_space < ACPI_USER_REGION_BEGIN) &&
-	    (region_space != ACPI_ADR_SPACE_DATA_TABLE)) {
-		ACPI_ERROR((AE_INFO, "Invalid AddressSpace type 0x%X",
-			    region_space));
-		return_ACPI_STATUS(AE_AML_INVALID_SPACE_ID);
+	if (!acpi_is_valid_space_id(space_id)) {
+		/*
+		 * Print an error message, but continue. We don't want to abort
+		 * a table load for this exception. Instead, if the region is
+		 * actually used at runtime, abort the executing method.
+		 */
+		ACPI_ERROR((AE_INFO,
+			    "Invalid/unknown Address Space ID: 0x%2.2X",
+			    space_id));
 	}
 
 	ACPI_DEBUG_PRINT((ACPI_DB_LOAD, "Region Type - %s (0x%X)\n",
-			  acpi_ut_get_region_name(region_space), region_space));
+			  acpi_ut_get_region_name(space_id), space_id));
 
 	/* Create the region descriptor */
 
@@ -330,10 +333,16 @@
 	region_obj2 = obj_desc->common.next_object;
 	region_obj2->extra.aml_start = aml_start;
 	region_obj2->extra.aml_length = aml_length;
+	if (walk_state->scope_info) {
+		region_obj2->extra.scope_node =
+		    walk_state->scope_info->scope.node;
+	} else {
+		region_obj2->extra.scope_node = node;
+	}
 
 	/* Init the region from the operands */
 
-	obj_desc->region.space_id = region_space;
+	obj_desc->region.space_id = space_id;
 	obj_desc->region.address = 0;
 	obj_desc->region.length = 0;
 	obj_desc->region.node = node;
diff --git a/drivers/acpi/acpica/exdebug.c b/drivers/acpi/acpica/exdebug.c
index c7a2f1e..e211e9c 100644
--- a/drivers/acpi/acpica/exdebug.c
+++ b/drivers/acpi/acpica/exdebug.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exdump.c b/drivers/acpi/acpica/exdump.c
index 61b8c0e..2a6ac0a 100644
--- a/drivers/acpi/acpica/exdump.c
+++ b/drivers/acpi/acpica/exdump.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -192,10 +192,13 @@
 	 "Buffer Object"}
 };
 
-static struct acpi_exdump_info acpi_ex_dump_region_field[3] = {
+static struct acpi_exdump_info acpi_ex_dump_region_field[5] = {
 	{ACPI_EXD_INIT, ACPI_EXD_TABLE_SIZE(acpi_ex_dump_region_field), NULL},
 	{ACPI_EXD_FIELD, 0, NULL},
-	{ACPI_EXD_POINTER, ACPI_EXD_OFFSET(field.region_obj), "Region Object"}
+	{ACPI_EXD_UINT8, ACPI_EXD_OFFSET(field.access_length), "AccessLength"},
+	{ACPI_EXD_POINTER, ACPI_EXD_OFFSET(field.region_obj), "Region Object"},
+	{ACPI_EXD_POINTER, ACPI_EXD_OFFSET(field.resource_buffer),
+	 "ResourceBuffer"}
 };
 
 static struct acpi_exdump_info acpi_ex_dump_bank_field[5] = {
diff --git a/drivers/acpi/acpica/exfield.c b/drivers/acpi/acpica/exfield.c
index 0bde223..dc092f5 100644
--- a/drivers/acpi/acpica/exfield.c
+++ b/drivers/acpi/acpica/exfield.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -100,18 +100,25 @@
 		   (obj_desc->field.region_obj->region.space_id ==
 		    ACPI_ADR_SPACE_SMBUS
 		    || obj_desc->field.region_obj->region.space_id ==
+		    ACPI_ADR_SPACE_GSBUS
+		    || obj_desc->field.region_obj->region.space_id ==
 		    ACPI_ADR_SPACE_IPMI)) {
 		/*
-		 * This is an SMBus or IPMI read. We must create a buffer to hold
+		 * This is an SMBus, GSBus or IPMI read. We must create a buffer to hold
 		 * the data and then directly access the region handler.
 		 *
-		 * Note: Smbus protocol value is passed in upper 16-bits of Function
+		 * Note: SMBus and GSBus protocol value is passed in upper 16-bits of Function
 		 */
 		if (obj_desc->field.region_obj->region.space_id ==
 		    ACPI_ADR_SPACE_SMBUS) {
 			length = ACPI_SMBUS_BUFFER_SIZE;
 			function =
 			    ACPI_READ | (obj_desc->field.attribute << 16);
+		} else if (obj_desc->field.region_obj->region.space_id ==
+			   ACPI_ADR_SPACE_GSBUS) {
+			length = ACPI_GSBUS_BUFFER_SIZE;
+			function =
+			    ACPI_READ | (obj_desc->field.attribute << 16);
 		} else {	/* IPMI */
 
 			length = ACPI_IPMI_BUFFER_SIZE;
@@ -248,21 +255,23 @@
 		   (obj_desc->field.region_obj->region.space_id ==
 		    ACPI_ADR_SPACE_SMBUS
 		    || obj_desc->field.region_obj->region.space_id ==
+		    ACPI_ADR_SPACE_GSBUS
+		    || obj_desc->field.region_obj->region.space_id ==
 		    ACPI_ADR_SPACE_IPMI)) {
 		/*
-		 * This is an SMBus or IPMI write. We will bypass the entire field
+		 * This is an SMBus, GSBus or IPMI write. We will bypass the entire field
 		 * mechanism and handoff the buffer directly to the handler. For
 		 * these address spaces, the buffer is bi-directional; on a write,
 		 * return data is returned in the same buffer.
 		 *
 		 * Source must be a buffer of sufficient size:
-		 * ACPI_SMBUS_BUFFER_SIZE or ACPI_IPMI_BUFFER_SIZE.
+		 * ACPI_SMBUS_BUFFER_SIZE, ACPI_GSBUS_BUFFER_SIZE, or ACPI_IPMI_BUFFER_SIZE.
 		 *
-		 * Note: SMBus protocol type is passed in upper 16-bits of Function
+		 * Note: SMBus and GSBus protocol type is passed in upper 16-bits of Function
 		 */
 		if (source_desc->common.type != ACPI_TYPE_BUFFER) {
 			ACPI_ERROR((AE_INFO,
-				    "SMBus or IPMI write requires Buffer, found type %s",
+				    "SMBus/IPMI/GenericSerialBus write requires Buffer, found type %s",
 				    acpi_ut_get_object_type_name(source_desc)));
 
 			return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
@@ -273,6 +282,11 @@
 			length = ACPI_SMBUS_BUFFER_SIZE;
 			function =
 			    ACPI_WRITE | (obj_desc->field.attribute << 16);
+		} else if (obj_desc->field.region_obj->region.space_id ==
+			   ACPI_ADR_SPACE_GSBUS) {
+			length = ACPI_GSBUS_BUFFER_SIZE;
+			function =
+			    ACPI_WRITE | (obj_desc->field.attribute << 16);
 		} else {	/* IPMI */
 
 			length = ACPI_IPMI_BUFFER_SIZE;
@@ -281,7 +295,7 @@
 
 		if (source_desc->buffer.length < length) {
 			ACPI_ERROR((AE_INFO,
-				    "SMBus or IPMI write requires Buffer of length %u, found length %u",
+				    "SMBus/IPMI/GenericSerialBus write requires Buffer of length %u, found length %u",
 				    length, source_desc->buffer.length));
 
 			return_ACPI_STATUS(AE_AML_BUFFER_LIMIT);
diff --git a/drivers/acpi/acpica/exfldio.c b/drivers/acpi/acpica/exfldio.c
index f915a7f..149de45 100644
--- a/drivers/acpi/acpica/exfldio.c
+++ b/drivers/acpi/acpica/exfldio.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -86,6 +86,7 @@
 {
 	acpi_status status = AE_OK;
 	union acpi_operand_object *rgn_desc;
+	u8 space_id;
 
 	ACPI_FUNCTION_TRACE_U32(ex_setup_region, field_datum_byte_offset);
 
@@ -101,6 +102,17 @@
 		return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 	}
 
+	space_id = rgn_desc->region.space_id;
+
+	/* Validate the Space ID */
+
+	if (!acpi_is_valid_space_id(space_id)) {
+		ACPI_ERROR((AE_INFO,
+			    "Invalid/unknown Address Space ID: 0x%2.2X",
+			    space_id));
+		return_ACPI_STATUS(AE_AML_INVALID_SPACE_ID);
+	}
+
 	/*
 	 * If the Region Address and Length have not been previously evaluated,
 	 * evaluate them now and save the results.
@@ -119,11 +131,12 @@
 	}
 
 	/*
-	 * Exit now for SMBus or IPMI address space, it has a non-linear
+	 * Exit now for SMBus, GSBus or IPMI address space, it has a non-linear
 	 * address space and the request cannot be directly validated
 	 */
-	if (rgn_desc->region.space_id == ACPI_ADR_SPACE_SMBUS ||
-	    rgn_desc->region.space_id == ACPI_ADR_SPACE_IPMI) {
+	if (space_id == ACPI_ADR_SPACE_SMBUS ||
+	    space_id == ACPI_ADR_SPACE_GSBUS ||
+	    space_id == ACPI_ADR_SPACE_IPMI) {
 
 		/* SMBus or IPMI has a non-linear address space */
 
@@ -271,11 +284,12 @@
 
 	/* Invoke the appropriate address_space/op_region handler */
 
-	status =
-	    acpi_ev_address_space_dispatch(rgn_desc, function, region_offset,
-					   ACPI_MUL_8(obj_desc->common_field.
-						      access_byte_width),
-					   value);
+	status = acpi_ev_address_space_dispatch(rgn_desc, obj_desc,
+						function, region_offset,
+						ACPI_MUL_8(obj_desc->
+							   common_field.
+							   access_byte_width),
+						value);
 
 	if (ACPI_FAILURE(status)) {
 		if (status == AE_NOT_IMPLEMENTED) {
@@ -316,6 +330,7 @@
 static u8
 acpi_ex_register_overflow(union acpi_operand_object *obj_desc, u64 value)
 {
+	ACPI_FUNCTION_NAME(ex_register_overflow);
 
 	if (obj_desc->common_field.bit_length >= ACPI_INTEGER_BIT_SIZE) {
 		/*
@@ -330,6 +345,11 @@
 		 * The Value is larger than the maximum value that can fit into
 		 * the register.
 		 */
+		ACPI_ERROR((AE_INFO,
+			    "Index value 0x%8.8X%8.8X overflows field width 0x%X",
+			    ACPI_FORMAT_UINT64(value),
+			    obj_desc->common_field.bit_length));
+
 		return (TRUE);
 	}
 
diff --git a/drivers/acpi/acpica/exmisc.c b/drivers/acpi/acpica/exmisc.c
index 703d88e..0a08933 100644
--- a/drivers/acpi/acpica/exmisc.c
+++ b/drivers/acpi/acpica/exmisc.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exmutex.c b/drivers/acpi/acpica/exmutex.c
index be1c56e..60933e9 100644
--- a/drivers/acpi/acpica/exmutex.c
+++ b/drivers/acpi/acpica/exmutex.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exnames.c b/drivers/acpi/acpica/exnames.c
index 49ec049..fcc75fa 100644
--- a/drivers/acpi/acpica/exnames.c
+++ b/drivers/acpi/acpica/exnames.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exoparg1.c b/drivers/acpi/acpica/exoparg1.c
index 236ead1..9ba8c73 100644
--- a/drivers/acpi/acpica/exoparg1.c
+++ b/drivers/acpi/acpica/exoparg1.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exoparg2.c b/drivers/acpi/acpica/exoparg2.c
index 2571b4a..879e8a2 100644
--- a/drivers/acpi/acpica/exoparg2.c
+++ b/drivers/acpi/acpica/exoparg2.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exoparg3.c b/drivers/acpi/acpica/exoparg3.c
index 1b48d9d..71fcc65 100644
--- a/drivers/acpi/acpica/exoparg3.c
+++ b/drivers/acpi/acpica/exoparg3.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exoparg6.c b/drivers/acpi/acpica/exoparg6.c
index f4a2787..0786b86 100644
--- a/drivers/acpi/acpica/exoparg6.c
+++ b/drivers/acpi/acpica/exoparg6.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exprep.c b/drivers/acpi/acpica/exprep.c
index cc95e20..30157f5 100644
--- a/drivers/acpi/acpica/exprep.c
+++ b/drivers/acpi/acpica/exprep.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -47,6 +47,7 @@
 #include "acinterp.h"
 #include "amlcode.h"
 #include "acnamesp.h"
+#include "acdispat.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exprep")
@@ -455,6 +456,30 @@
 		obj_desc->field.region_obj =
 		    acpi_ns_get_attached_object(info->region_node);
 
+		/* Fields specific to generic_serial_bus fields */
+
+		obj_desc->field.access_length = info->access_length;
+
+		if (info->connection_node) {
+			second_desc = info->connection_node->object;
+			if (!(second_desc->common.flags & AOPOBJ_DATA_VALID)) {
+				status =
+				    acpi_ds_get_buffer_arguments(second_desc);
+				if (ACPI_FAILURE(status)) {
+					acpi_ut_delete_object_desc(obj_desc);
+					return_ACPI_STATUS(status);
+				}
+			}
+
+			obj_desc->field.resource_buffer =
+			    second_desc->buffer.pointer;
+			obj_desc->field.resource_length =
+			    (u16)second_desc->buffer.length;
+		} else if (info->resource_buffer) {
+			obj_desc->field.resource_buffer = info->resource_buffer;
+			obj_desc->field.resource_length = info->resource_length;
+		}
+
 		/* Allow full data read from EC address space */
 
 		if ((obj_desc->field.region_obj->region.space_id ==
diff --git a/drivers/acpi/acpica/exregion.c b/drivers/acpi/acpica/exregion.c
index f0d5e14..12d51df 100644
--- a/drivers/acpi/acpica/exregion.c
+++ b/drivers/acpi/acpica/exregion.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exresnte.c b/drivers/acpi/acpica/exresnte.c
index 55997e4..fa50e77 100644
--- a/drivers/acpi/acpica/exresnte.c
+++ b/drivers/acpi/acpica/exresnte.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exresolv.c b/drivers/acpi/acpica/exresolv.c
index db502cd..6e335dc 100644
--- a/drivers/acpi/acpica/exresolv.c
+++ b/drivers/acpi/acpica/exresolv.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exresop.c b/drivers/acpi/acpica/exresop.c
index e3bb00c..a67b1d9 100644
--- a/drivers/acpi/acpica/exresop.c
+++ b/drivers/acpi/acpica/exresop.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exstore.c b/drivers/acpi/acpica/exstore.c
index c0c8842..c6cf843 100644
--- a/drivers/acpi/acpica/exstore.c
+++ b/drivers/acpi/acpica/exstore.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exstoren.c b/drivers/acpi/acpica/exstoren.c
index a979017..b35bed5 100644
--- a/drivers/acpi/acpica/exstoren.c
+++ b/drivers/acpi/acpica/exstoren.c
@@ -7,7 +7,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exstorob.c b/drivers/acpi/acpica/exstorob.c
index dc665cc..65a45d8 100644
--- a/drivers/acpi/acpica/exstorob.c
+++ b/drivers/acpi/acpica/exstorob.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exsystem.c b/drivers/acpi/acpica/exsystem.c
index df66e7b..191a129 100644
--- a/drivers/acpi/acpica/exsystem.c
+++ b/drivers/acpi/acpica/exsystem.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exutils.c b/drivers/acpi/acpica/exutils.c
index 8ad9314..eb6798b 100644
--- a/drivers/acpi/acpica/exutils.c
+++ b/drivers/acpi/acpica/exutils.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -435,4 +435,29 @@
 	}
 }
 
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_is_valid_space_id
+ *
+ * PARAMETERS:  space_id            - ID to be validated
+ *
+ * RETURN:      TRUE if valid/supported ID.
+ *
+ * DESCRIPTION: Validate an operation region space_iD.
+ *
+ ******************************************************************************/
+
+u8 acpi_is_valid_space_id(u8 space_id)
+{
+
+	if ((space_id >= ACPI_NUM_PREDEFINED_REGIONS) &&
+	    (space_id < ACPI_USER_REGION_BEGIN) &&
+	    (space_id != ACPI_ADR_SPACE_DATA_TABLE) &&
+	    (space_id != ACPI_ADR_SPACE_FIXED_HARDWARE)) {
+		return (FALSE);
+	}
+
+	return (TRUE);
+}
+
 #endif
diff --git a/drivers/acpi/acpica/hwacpi.c b/drivers/acpi/acpica/hwacpi.c
index fc380d3..d21ec5f 100644
--- a/drivers/acpi/acpica/hwacpi.c
+++ b/drivers/acpi/acpica/hwacpi.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/hwgpe.c b/drivers/acpi/acpica/hwgpe.c
index f610d88..1a6894a 100644
--- a/drivers/acpi/acpica/hwgpe.c
+++ b/drivers/acpi/acpica/hwgpe.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/hwpci.c b/drivers/acpi/acpica/hwpci.c
index 050fd22..1455ddc 100644
--- a/drivers/acpi/acpica/hwpci.c
+++ b/drivers/acpi/acpica/hwpci.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/hwregs.c b/drivers/acpi/acpica/hwregs.c
index cc70f3f..4ea4eeb5 100644
--- a/drivers/acpi/acpica/hwregs.c
+++ b/drivers/acpi/acpica/hwregs.c
@@ -7,7 +7,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/hwsleep.c b/drivers/acpi/acpica/hwsleep.c
index d52da30..3c4a922 100644
--- a/drivers/acpi/acpica/hwsleep.c
+++ b/drivers/acpi/acpica/hwsleep.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/hwtimer.c b/drivers/acpi/acpica/hwtimer.c
index 50d21c4..d4973d9 100644
--- a/drivers/acpi/acpica/hwtimer.c
+++ b/drivers/acpi/acpica/hwtimer.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/hwvalid.c b/drivers/acpi/acpica/hwvalid.c
index 5f16058..6e5c43a 100644
--- a/drivers/acpi/acpica/hwvalid.c
+++ b/drivers/acpi/acpica/hwvalid.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -134,6 +134,8 @@
 	/* Supported widths are 8/16/32 */
 
 	if ((bit_width != 8) && (bit_width != 16) && (bit_width != 32)) {
+		ACPI_ERROR((AE_INFO,
+			    "Bad BitWidth parameter: %8.8X", bit_width));
 		return AE_BAD_PARAMETER;
 	}
 
diff --git a/drivers/acpi/acpica/hwxface.c b/drivers/acpi/acpica/hwxface.c
index d707756..9d38eb6 100644
--- a/drivers/acpi/acpica/hwxface.c
+++ b/drivers/acpi/acpica/hwxface.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsaccess.c b/drivers/acpi/acpica/nsaccess.c
index d93172f..61623f3 100644
--- a/drivers/acpi/acpica/nsaccess.c
+++ b/drivers/acpi/acpica/nsaccess.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsalloc.c b/drivers/acpi/acpica/nsalloc.c
index 1d0ef15..7c3d3ce 100644
--- a/drivers/acpi/acpica/nsalloc.c
+++ b/drivers/acpi/acpica/nsalloc.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsdump.c b/drivers/acpi/acpica/nsdump.c
index b683cc2..b7f2b3b 100644
--- a/drivers/acpi/acpica/nsdump.c
+++ b/drivers/acpi/acpica/nsdump.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsdumpdv.c b/drivers/acpi/acpica/nsdumpdv.c
index 2ed294b..30ea5bc 100644
--- a/drivers/acpi/acpica/nsdumpdv.c
+++ b/drivers/acpi/acpica/nsdumpdv.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nseval.c b/drivers/acpi/acpica/nseval.c
index c1bd02b..f375cb8 100644
--- a/drivers/acpi/acpica/nseval.c
+++ b/drivers/acpi/acpica/nseval.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsinit.c b/drivers/acpi/acpica/nsinit.c
index fd7c638..9d84ec2 100644
--- a/drivers/acpi/acpica/nsinit.c
+++ b/drivers/acpi/acpica/nsinit.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsload.c b/drivers/acpi/acpica/nsload.c
index 5f7dc69..5cbf15f 100644
--- a/drivers/acpi/acpica/nsload.c
+++ b/drivers/acpi/acpica/nsload.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsnames.c b/drivers/acpi/acpica/nsnames.c
index d5fa520..b20e7c8 100644
--- a/drivers/acpi/acpica/nsnames.c
+++ b/drivers/acpi/acpica/nsnames.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsobject.c b/drivers/acpi/acpica/nsobject.c
index 3bb8bf1..dd77a3c 100644
--- a/drivers/acpi/acpica/nsobject.c
+++ b/drivers/acpi/acpica/nsobject.c
@@ -6,7 +6,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsparse.c b/drivers/acpi/acpica/nsparse.c
index b3234fa..ec7ba2d 100644
--- a/drivers/acpi/acpica/nsparse.c
+++ b/drivers/acpi/acpica/nsparse.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nspredef.c b/drivers/acpi/acpica/nspredef.c
index c845c80..bbe46a4 100644
--- a/drivers/acpi/acpica/nspredef.c
+++ b/drivers/acpi/acpica/nspredef.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -620,6 +620,7 @@
 	case ACPI_PTYPE2_FIXED:
 	case ACPI_PTYPE2_MIN:
 	case ACPI_PTYPE2_COUNT:
+	case ACPI_PTYPE2_FIX_VAR:
 
 		/*
 		 * These types all return a single Package that consists of a
@@ -759,6 +760,34 @@
 			}
 			break;
 
+		case ACPI_PTYPE2_FIX_VAR:
+			/*
+			 * Each subpackage has a fixed number of elements and an
+			 * optional element
+			 */
+			expected_count =
+			    package->ret_info.count1 + package->ret_info.count2;
+			if (sub_package->package.count < expected_count) {
+				goto package_too_small;
+			}
+
+			status =
+			    acpi_ns_check_package_elements(data, sub_elements,
+							   package->ret_info.
+							   object_type1,
+							   package->ret_info.
+							   count1,
+							   package->ret_info.
+							   object_type2,
+							   sub_package->package.
+							   count -
+							   package->ret_info.
+							   count1, 0);
+			if (ACPI_FAILURE(status)) {
+				return (status);
+			}
+			break;
+
 		case ACPI_PTYPE2_FIXED:
 
 			/* Each sub-package has a fixed length */
diff --git a/drivers/acpi/acpica/nsrepair.c b/drivers/acpi/acpica/nsrepair.c
index ac7b854..9c35d20 100644
--- a/drivers/acpi/acpica/nsrepair.c
+++ b/drivers/acpi/acpica/nsrepair.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -634,6 +634,7 @@
 	case ACPI_PTYPE2_FIXED:
 	case ACPI_PTYPE2_MIN:
 	case ACPI_PTYPE2_REV_FIXED:
+	case ACPI_PTYPE2_FIX_VAR:
 		break;
 
 	default:
diff --git a/drivers/acpi/acpica/nsrepair2.c b/drivers/acpi/acpica/nsrepair2.c
index 024c4f2..726bc8e 100644
--- a/drivers/acpi/acpica/nsrepair2.c
+++ b/drivers/acpi/acpica/nsrepair2.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -467,11 +467,12 @@
 	}
 
 	/*
-	 * Copy and uppercase the string. From the ACPI specification:
+	 * Copy and uppercase the string. From the ACPI 5.0 specification:
 	 *
 	 * A valid PNP ID must be of the form "AAA####" where A is an uppercase
 	 * letter and # is a hex digit. A valid ACPI ID must be of the form
-	 * "ACPI####" where # is a hex digit.
+	 * "NNNN####" where N is an uppercase letter or decimal digit, and
+	 * # is a hex digit.
 	 */
 	for (dest = new_string->string.pointer; *source; dest++, source++) {
 		*dest = (char)ACPI_TOUPPER(*source);
diff --git a/drivers/acpi/acpica/nssearch.c b/drivers/acpi/acpica/nssearch.c
index 28b0d7a..507043d 100644
--- a/drivers/acpi/acpica/nssearch.c
+++ b/drivers/acpi/acpica/nssearch.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsutils.c b/drivers/acpi/acpica/nsutils.c
index cb1b104..a535b7a 100644
--- a/drivers/acpi/acpica/nsutils.c
+++ b/drivers/acpi/acpica/nsutils.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nswalk.c b/drivers/acpi/acpica/nswalk.c
index 345f0c3..f69895a 100644
--- a/drivers/acpi/acpica/nswalk.c
+++ b/drivers/acpi/acpica/nswalk.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsxfeval.c b/drivers/acpi/acpica/nsxfeval.c
index e7f016d..71d15f6 100644
--- a/drivers/acpi/acpica/nsxfeval.c
+++ b/drivers/acpi/acpica/nsxfeval.c
@@ -6,7 +6,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsxfname.c b/drivers/acpi/acpica/nsxfname.c
index 83bf930..af401c9 100644
--- a/drivers/acpi/acpica/nsxfname.c
+++ b/drivers/acpi/acpica/nsxfname.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsxfobj.c b/drivers/acpi/acpica/nsxfobj.c
index 57e6d82..880a605 100644
--- a/drivers/acpi/acpica/nsxfobj.c
+++ b/drivers/acpi/acpica/nsxfobj.c
@@ -6,7 +6,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/psargs.c b/drivers/acpi/acpica/psargs.c
index e1fad0e..5ac36ab 100644
--- a/drivers/acpi/acpica/psargs.c
+++ b/drivers/acpi/acpica/psargs.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -484,34 +484,54 @@
 static union acpi_parse_object *acpi_ps_get_next_field(struct acpi_parse_state
 						       *parser_state)
 {
-	u32 aml_offset = (u32)
-	    ACPI_PTR_DIFF(parser_state->aml,
-			  parser_state->aml_start);
+	u32 aml_offset;
 	union acpi_parse_object *field;
+	union acpi_parse_object *arg = NULL;
 	u16 opcode;
 	u32 name;
+	u8 access_type;
+	u8 access_attribute;
+	u8 access_length;
+	u32 pkg_length;
+	u8 *pkg_end;
+	u32 buffer_length;
 
 	ACPI_FUNCTION_TRACE(ps_get_next_field);
 
+	aml_offset =
+	    (u32)ACPI_PTR_DIFF(parser_state->aml, parser_state->aml_start);
+
 	/* Determine field type */
 
 	switch (ACPI_GET8(parser_state->aml)) {
-	default:
-
-		opcode = AML_INT_NAMEDFIELD_OP;
-		break;
-
-	case 0x00:
+	case AML_FIELD_OFFSET_OP:
 
 		opcode = AML_INT_RESERVEDFIELD_OP;
 		parser_state->aml++;
 		break;
 
-	case 0x01:
+	case AML_FIELD_ACCESS_OP:
 
 		opcode = AML_INT_ACCESSFIELD_OP;
 		parser_state->aml++;
 		break;
+
+	case AML_FIELD_CONNECTION_OP:
+
+		opcode = AML_INT_CONNECTION_OP;
+		parser_state->aml++;
+		break;
+
+	case AML_FIELD_EXT_ACCESS_OP:
+
+		opcode = AML_INT_EXTACCESSFIELD_OP;
+		parser_state->aml++;
+		break;
+
+	default:
+
+		opcode = AML_INT_NAMEDFIELD_OP;
+		break;
 	}
 
 	/* Allocate a new field op */
@@ -549,16 +569,111 @@
 		break;
 
 	case AML_INT_ACCESSFIELD_OP:
+	case AML_INT_EXTACCESSFIELD_OP:
 
 		/*
 		 * Get access_type and access_attrib and merge into the field Op
-		 * access_type is first operand, access_attribute is second
+		 * access_type is first operand, access_attribute is second. stuff
+		 * these bytes into the node integer value for convenience.
 		 */
-		field->common.value.integer =
-		    (((u32) ACPI_GET8(parser_state->aml) << 8));
+
+		/* Get the two bytes (Type/Attribute) */
+
+		access_type = ACPI_GET8(parser_state->aml);
 		parser_state->aml++;
-		field->common.value.integer |= ACPI_GET8(parser_state->aml);
+		access_attribute = ACPI_GET8(parser_state->aml);
 		parser_state->aml++;
+
+		field->common.value.integer = (u8)access_type;
+		field->common.value.integer |= (u16)(access_attribute << 8);
+
+		/* This opcode has a third byte, access_length */
+
+		if (opcode == AML_INT_EXTACCESSFIELD_OP) {
+			access_length = ACPI_GET8(parser_state->aml);
+			parser_state->aml++;
+
+			field->common.value.integer |=
+			    (u32)(access_length << 16);
+		}
+		break;
+
+	case AML_INT_CONNECTION_OP:
+
+		/*
+		 * Argument for Connection operator can be either a Buffer
+		 * (resource descriptor), or a name_string.
+		 */
+		if (ACPI_GET8(parser_state->aml) == AML_BUFFER_OP) {
+			parser_state->aml++;
+
+			pkg_end = parser_state->aml;
+			pkg_length =
+			    acpi_ps_get_next_package_length(parser_state);
+			pkg_end += pkg_length;
+
+			if (parser_state->aml < pkg_end) {
+
+				/* Non-empty list */
+
+				arg = acpi_ps_alloc_op(AML_INT_BYTELIST_OP);
+				if (!arg) {
+					return_PTR(NULL);
+				}
+
+				/* Get the actual buffer length argument */
+
+				opcode = ACPI_GET8(parser_state->aml);
+				parser_state->aml++;
+
+				switch (opcode) {
+				case AML_BYTE_OP:	/* AML_BYTEDATA_ARG */
+					buffer_length =
+					    ACPI_GET8(parser_state->aml);
+					parser_state->aml += 1;
+					break;
+
+				case AML_WORD_OP:	/* AML_WORDDATA_ARG */
+					buffer_length =
+					    ACPI_GET16(parser_state->aml);
+					parser_state->aml += 2;
+					break;
+
+				case AML_DWORD_OP:	/* AML_DWORDATA_ARG */
+					buffer_length =
+					    ACPI_GET32(parser_state->aml);
+					parser_state->aml += 4;
+					break;
+
+				default:
+					buffer_length = 0;
+					break;
+				}
+
+				/* Fill in bytelist data */
+
+				arg->named.value.size = buffer_length;
+				arg->named.data = parser_state->aml;
+			}
+
+			/* Skip to End of byte data */
+
+			parser_state->aml = pkg_end;
+		} else {
+			arg = acpi_ps_alloc_op(AML_INT_NAMEPATH_OP);
+			if (!arg) {
+				return_PTR(NULL);
+			}
+
+			/* Get the Namestring argument */
+
+			arg->common.value.name =
+			    acpi_ps_get_next_namestring(parser_state);
+		}
+
+		/* Link the buffer/namestring to parent (CONNECTION_OP) */
+
+		acpi_ps_append_arg(field, arg);
 		break;
 
 	default:
diff --git a/drivers/acpi/acpica/psloop.c b/drivers/acpi/acpica/psloop.c
index 01dd70d..9547ad8 100644
--- a/drivers/acpi/acpica/psloop.c
+++ b/drivers/acpi/acpica/psloop.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/psopcode.c b/drivers/acpi/acpica/psopcode.c
index bed08de..a0226fd 100644
--- a/drivers/acpi/acpica/psopcode.c
+++ b/drivers/acpi/acpica/psopcode.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -638,7 +638,16 @@
 
 /* 7E */ ACPI_OP("Timer", ARGP_TIMER_OP, ARGI_TIMER_OP, ACPI_TYPE_ANY,
 		 AML_CLASS_EXECUTE, AML_TYPE_EXEC_0A_0T_1R,
-		 AML_FLAGS_EXEC_0A_0T_1R)
+			 AML_FLAGS_EXEC_0A_0T_1R),
+
+/* ACPI 5.0 opcodes */
+
+/* 7F */ ACPI_OP("-ConnectField-", ARGP_CONNECTFIELD_OP,
+			 ARGI_CONNECTFIELD_OP, ACPI_TYPE_ANY,
+			 AML_CLASS_INTERNAL, AML_TYPE_BOGUS, AML_HAS_ARGS),
+/* 80 */ ACPI_OP("-ExtAccessField-", ARGP_CONNECTFIELD_OP,
+			 ARGI_CONNECTFIELD_OP, ACPI_TYPE_ANY,
+			 AML_CLASS_INTERNAL, AML_TYPE_BOGUS, 0)
 
 /*! [End] no source code translation !*/
 };
@@ -657,7 +666,7 @@
 /* 0x20 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
 /* 0x28 */ _UNK, _UNK, _UNK, _UNK, _UNK, 0x63, _PFX, _PFX,
 /* 0x30 */ 0x67, 0x66, 0x68, 0x65, 0x69, 0x64, 0x6A, 0x7D,
-/* 0x38 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
+/* 0x38 */ 0x7F, 0x80, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
 /* 0x40 */ _UNK, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC,
 /* 0x48 */ _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC,
 /* 0x50 */ _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC,
diff --git a/drivers/acpi/acpica/psparse.c b/drivers/acpi/acpica/psparse.c
index 9bb0cbd..2ff9c35 100644
--- a/drivers/acpi/acpica/psparse.c
+++ b/drivers/acpi/acpica/psparse.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/psscope.c b/drivers/acpi/acpica/psscope.c
index a5faa13..c872aa4 100644
--- a/drivers/acpi/acpica/psscope.c
+++ b/drivers/acpi/acpica/psscope.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/pstree.c b/drivers/acpi/acpica/pstree.c
index f1464c0..2b03cdb 100644
--- a/drivers/acpi/acpica/pstree.c
+++ b/drivers/acpi/acpica/pstree.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -74,6 +74,12 @@
 
 	ACPI_FUNCTION_ENTRY();
 
+/*
+	if (Op->Common.aml_opcode == AML_INT_CONNECTION_OP)
+	{
+		return (Op->Common.Value.Arg);
+	}
+*/
 	/* Get the info structure for this opcode */
 
 	op_info = acpi_ps_get_opcode_info(op->common.aml_opcode);
diff --git a/drivers/acpi/acpica/psutils.c b/drivers/acpi/acpica/psutils.c
index 7eda785..13bb131 100644
--- a/drivers/acpi/acpica/psutils.c
+++ b/drivers/acpi/acpica/psutils.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/pswalk.c b/drivers/acpi/acpica/pswalk.c
index 3312d63..ab96cf4 100644
--- a/drivers/acpi/acpica/pswalk.c
+++ b/drivers/acpi/acpica/pswalk.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/psxface.c b/drivers/acpi/acpica/psxface.c
index 8086805..9d98c5f 100644
--- a/drivers/acpi/acpica/psxface.c
+++ b/drivers/acpi/acpica/psxface.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/rsaddr.c b/drivers/acpi/acpica/rsaddr.c
index 9e66f90..a030565 100644
--- a/drivers/acpi/acpica/rsaddr.c
+++ b/drivers/acpi/acpica/rsaddr.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/rscalc.c b/drivers/acpi/acpica/rscalc.c
index 3a8a89e..3c6df4b 100644
--- a/drivers/acpi/acpica/rscalc.c
+++ b/drivers/acpi/acpica/rscalc.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -313,6 +313,38 @@
 							  resource_source));
 			break;
 
+		case ACPI_RESOURCE_TYPE_GPIO:
+
+			total_size =
+			    (acpi_rs_length) (total_size +
+					      (resource->data.gpio.
+					       pin_table_length * 2) +
+					      resource->data.gpio.
+					      resource_source.string_length +
+					      resource->data.gpio.
+					      vendor_length);
+
+			break;
+
+		case ACPI_RESOURCE_TYPE_SERIAL_BUS:
+
+			total_size =
+			    acpi_gbl_aml_resource_serial_bus_sizes[resource->
+								   data.
+								   common_serial_bus.
+								   type];
+
+			total_size = (acpi_rs_length) (total_size +
+						       resource->data.
+						       i2c_serial_bus.
+						       resource_source.
+						       string_length +
+						       resource->data.
+						       i2c_serial_bus.
+						       vendor_length);
+
+			break;
+
 		default:
 			break;
 		}
@@ -362,10 +394,11 @@
 	u32 extra_struct_bytes;
 	u8 resource_index;
 	u8 minimum_aml_resource_length;
+	union aml_resource *aml_resource;
 
 	ACPI_FUNCTION_TRACE(rs_get_list_length);
 
-	*size_needed = 0;
+	*size_needed = ACPI_RS_SIZE_MIN;	/* Minimum size is one end_tag */
 	end_aml = aml_buffer + aml_buffer_length;
 
 	/* Walk the list of AML resource descriptors */
@@ -376,9 +409,15 @@
 
 		status = acpi_ut_validate_resource(aml_buffer, &resource_index);
 		if (ACPI_FAILURE(status)) {
+			/*
+			 * Exit on failure. Cannot continue because the descriptor length
+			 * may be bogus also.
+			 */
 			return_ACPI_STATUS(status);
 		}
 
+		aml_resource = (void *)aml_buffer;
+
 		/* Get the resource length and base (minimum) AML size */
 
 		resource_length = acpi_ut_get_resource_length(aml_buffer);
@@ -422,10 +461,8 @@
 
 		case ACPI_RESOURCE_NAME_END_TAG:
 			/*
-			 * End Tag:
-			 * This is the normal exit, add size of end_tag
+			 * End Tag: This is the normal exit
 			 */
-			*size_needed += ACPI_RS_SIZE_MIN;
 			return_ACPI_STATUS(AE_OK);
 
 		case ACPI_RESOURCE_NAME_ADDRESS32:
@@ -457,6 +494,33 @@
 							 minimum_aml_resource_length);
 			break;
 
+		case ACPI_RESOURCE_NAME_GPIO:
+
+			/* Vendor data is optional */
+
+			if (aml_resource->gpio.vendor_length) {
+				extra_struct_bytes +=
+				    aml_resource->gpio.vendor_offset -
+				    aml_resource->gpio.pin_table_offset +
+				    aml_resource->gpio.vendor_length;
+			} else {
+				extra_struct_bytes +=
+				    aml_resource->large_header.resource_length +
+				    sizeof(struct aml_resource_large_header) -
+				    aml_resource->gpio.pin_table_offset;
+			}
+			break;
+
+		case ACPI_RESOURCE_NAME_SERIAL_BUS:
+
+			minimum_aml_resource_length =
+			    acpi_gbl_resource_aml_serial_bus_sizes
+			    [aml_resource->common_serial_bus.type];
+			extra_struct_bytes +=
+			    aml_resource->common_serial_bus.resource_length -
+			    minimum_aml_resource_length;
+			break;
+
 		default:
 			break;
 		}
@@ -467,9 +531,18 @@
 		 * Important: Round the size up for the appropriate alignment. This
 		 * is a requirement on IA64.
 		 */
-		buffer_size = acpi_gbl_resource_struct_sizes[resource_index] +
-		    extra_struct_bytes;
-		buffer_size = (u32) ACPI_ROUND_UP_TO_NATIVE_WORD(buffer_size);
+		if (acpi_ut_get_resource_type(aml_buffer) ==
+		    ACPI_RESOURCE_NAME_SERIAL_BUS) {
+			buffer_size =
+			    acpi_gbl_resource_struct_serial_bus_sizes
+			    [aml_resource->common_serial_bus.type] +
+			    extra_struct_bytes;
+		} else {
+			buffer_size =
+			    acpi_gbl_resource_struct_sizes[resource_index] +
+			    extra_struct_bytes;
+		}
+		buffer_size = (u32)ACPI_ROUND_UP_TO_NATIVE_WORD(buffer_size);
 
 		*size_needed += buffer_size;
 
diff --git a/drivers/acpi/acpica/rscreate.c b/drivers/acpi/acpica/rscreate.c
index 4ce6e11..46d6eb3 100644
--- a/drivers/acpi/acpica/rscreate.c
+++ b/drivers/acpi/acpica/rscreate.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -51,6 +51,70 @@
 
 /*******************************************************************************
  *
+ * FUNCTION:    acpi_buffer_to_resource
+ *
+ * PARAMETERS:  aml_buffer          - Pointer to the resource byte stream
+ *              aml_buffer_length   - Length of the aml_buffer
+ *              resource_ptr        - Where the converted resource is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Convert a raw AML buffer to a resource list
+ *
+ ******************************************************************************/
+acpi_status
+acpi_buffer_to_resource(u8 *aml_buffer,
+			u16 aml_buffer_length,
+			struct acpi_resource **resource_ptr)
+{
+	acpi_status status;
+	acpi_size list_size_needed;
+	void *resource;
+	void *current_resource_ptr;
+
+	/*
+	 * Note: we allow AE_AML_NO_RESOURCE_END_TAG, since an end tag
+	 * is not required here.
+	 */
+
+	/* Get the required length for the converted resource */
+
+	status = acpi_rs_get_list_length(aml_buffer, aml_buffer_length,
+					 &list_size_needed);
+	if (status == AE_AML_NO_RESOURCE_END_TAG) {
+		status = AE_OK;
+	}
+	if (ACPI_FAILURE(status)) {
+		return (status);
+	}
+
+	/* Allocate a buffer for the converted resource */
+
+	resource = ACPI_ALLOCATE_ZEROED(list_size_needed);
+	current_resource_ptr = resource;
+	if (!resource) {
+		return (AE_NO_MEMORY);
+	}
+
+	/* Perform the AML-to-Resource conversion */
+
+	status = acpi_ut_walk_aml_resources(aml_buffer, aml_buffer_length,
+					    acpi_rs_convert_aml_to_resources,
+					    &current_resource_ptr);
+	if (status == AE_AML_NO_RESOURCE_END_TAG) {
+		status = AE_OK;
+	}
+	if (ACPI_FAILURE(status)) {
+		ACPI_FREE(resource);
+	} else {
+		*resource_ptr = resource;
+	}
+
+	return (status);
+}
+
+/*******************************************************************************
+ *
  * FUNCTION:    acpi_rs_create_resource_list
  *
  * PARAMETERS:  aml_buffer          - Pointer to the resource byte stream
@@ -66,9 +130,10 @@
  *              of device resources.
  *
  ******************************************************************************/
+
 acpi_status
 acpi_rs_create_resource_list(union acpi_operand_object *aml_buffer,
-			     struct acpi_buffer *output_buffer)
+			     struct acpi_buffer * output_buffer)
 {
 
 	acpi_status status;
diff --git a/drivers/acpi/acpica/rsdump.c b/drivers/acpi/acpica/rsdump.c
index 33db752..b4c5811 100644
--- a/drivers/acpi/acpica/rsdump.c
+++ b/drivers/acpi/acpica/rsdump.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -61,11 +61,13 @@
 
 static void acpi_rs_out_title(char *title);
 
-static void acpi_rs_dump_byte_list(u16 length, u8 * data);
+static void acpi_rs_dump_byte_list(u16 length, u8 *data);
 
-static void acpi_rs_dump_dword_list(u8 length, u32 * data);
+static void acpi_rs_dump_word_list(u16 length, u16 *data);
 
-static void acpi_rs_dump_short_byte_list(u8 length, u8 * data);
+static void acpi_rs_dump_dword_list(u8 length, u32 *data);
+
+static void acpi_rs_dump_short_byte_list(u8 length, u8 *data);
 
 static void
 acpi_rs_dump_resource_source(struct acpi_resource_source *resource_source);
@@ -309,6 +311,125 @@
 	{ACPI_RSD_UINT64, ACPI_RSD_OFFSET(generic_reg.address), "Address", NULL}
 };
 
+struct acpi_rsdump_info acpi_rs_dump_gpio[16] = {
+	{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_gpio), "GPIO", NULL},
+	{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(gpio.revision_id), "RevisionId", NULL},
+	{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(gpio.connection_type),
+	 "ConnectionType", acpi_gbl_ct_decode},
+	{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(gpio.producer_consumer),
+	 "ProducerConsumer", acpi_gbl_consume_decode},
+	{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(gpio.pin_config), "PinConfig",
+	 acpi_gbl_ppc_decode},
+	{ACPI_RSD_2BITFLAG, ACPI_RSD_OFFSET(gpio.sharable), "Sharable",
+	 acpi_gbl_shr_decode},
+	{ACPI_RSD_2BITFLAG, ACPI_RSD_OFFSET(gpio.io_restriction),
+	 "IoRestriction", acpi_gbl_ior_decode},
+	{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(gpio.triggering), "Triggering",
+	 acpi_gbl_he_decode},
+	{ACPI_RSD_2BITFLAG, ACPI_RSD_OFFSET(gpio.polarity), "Polarity",
+	 acpi_gbl_ll_decode},
+	{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(gpio.drive_strength), "DriveStrength",
+	 NULL},
+	{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(gpio.debounce_timeout),
+	 "DebounceTimeout", NULL},
+	{ACPI_RSD_SOURCE, ACPI_RSD_OFFSET(gpio.resource_source),
+	 "ResourceSource", NULL},
+	{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(gpio.pin_table_length),
+	 "PinTableLength", NULL},
+	{ACPI_RSD_WORDLIST, ACPI_RSD_OFFSET(gpio.pin_table), "PinTable", NULL},
+	{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(gpio.vendor_length), "VendorLength",
+	 NULL},
+	{ACPI_RSD_SHORTLISTX, ACPI_RSD_OFFSET(gpio.vendor_data), "VendorData",
+	 NULL},
+};
+
+struct acpi_rsdump_info acpi_rs_dump_fixed_dma[4] = {
+	{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_fixed_dma),
+	 "FixedDma", NULL},
+	{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(fixed_dma.request_lines),
+	 "RequestLines", NULL},
+	{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(fixed_dma.channels), "Channels",
+	 NULL},
+	{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(fixed_dma.width), "TransferWidth",
+	 acpi_gbl_dts_decode},
+};
+
+#define ACPI_RS_DUMP_COMMON_SERIAL_BUS \
+	{ACPI_RSD_UINT8,    ACPI_RSD_OFFSET (common_serial_bus.revision_id),    "RevisionId",               NULL}, \
+	{ACPI_RSD_UINT8,    ACPI_RSD_OFFSET (common_serial_bus.type),           "Type",                     acpi_gbl_sbt_decode}, \
+	{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET (common_serial_bus.producer_consumer), "ProducerConsumer",      acpi_gbl_consume_decode}, \
+	{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET (common_serial_bus.slave_mode),     "SlaveMode",                acpi_gbl_sm_decode}, \
+	{ACPI_RSD_UINT8,    ACPI_RSD_OFFSET (common_serial_bus.type_revision_id), "TypeRevisionId",         NULL}, \
+	{ACPI_RSD_UINT16,   ACPI_RSD_OFFSET (common_serial_bus.type_data_length), "TypeDataLength",         NULL}, \
+	{ACPI_RSD_SOURCE,   ACPI_RSD_OFFSET (common_serial_bus.resource_source), "ResourceSource",          NULL}, \
+	{ACPI_RSD_UINT16,   ACPI_RSD_OFFSET (common_serial_bus.vendor_length),  "VendorLength",             NULL}, \
+	{ACPI_RSD_SHORTLISTX,ACPI_RSD_OFFSET (common_serial_bus.vendor_data),   "VendorData",               NULL},
+
+struct acpi_rsdump_info acpi_rs_dump_common_serial_bus[10] = {
+	{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_common_serial_bus),
+	 "Common Serial Bus", NULL},
+	ACPI_RS_DUMP_COMMON_SERIAL_BUS
+};
+
+struct acpi_rsdump_info acpi_rs_dump_i2c_serial_bus[13] = {
+	{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_i2c_serial_bus),
+	 "I2C Serial Bus", NULL},
+	ACPI_RS_DUMP_COMMON_SERIAL_BUS {ACPI_RSD_1BITFLAG,
+					ACPI_RSD_OFFSET(i2c_serial_bus.
+							access_mode),
+					"AccessMode", acpi_gbl_am_decode},
+	{ACPI_RSD_UINT32, ACPI_RSD_OFFSET(i2c_serial_bus.connection_speed),
+	 "ConnectionSpeed", NULL},
+	{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(i2c_serial_bus.slave_address),
+	 "SlaveAddress", NULL},
+};
+
+struct acpi_rsdump_info acpi_rs_dump_spi_serial_bus[17] = {
+	{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_spi_serial_bus),
+	 "Spi Serial Bus", NULL},
+	ACPI_RS_DUMP_COMMON_SERIAL_BUS {ACPI_RSD_1BITFLAG,
+					ACPI_RSD_OFFSET(spi_serial_bus.
+							wire_mode), "WireMode",
+					acpi_gbl_wm_decode},
+	{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(spi_serial_bus.device_polarity),
+	 "DevicePolarity", acpi_gbl_dp_decode},
+	{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(spi_serial_bus.data_bit_length),
+	 "DataBitLength", NULL},
+	{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(spi_serial_bus.clock_phase),
+	 "ClockPhase", acpi_gbl_cph_decode},
+	{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(spi_serial_bus.clock_polarity),
+	 "ClockPolarity", acpi_gbl_cpo_decode},
+	{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(spi_serial_bus.device_selection),
+	 "DeviceSelection", NULL},
+	{ACPI_RSD_UINT32, ACPI_RSD_OFFSET(spi_serial_bus.connection_speed),
+	 "ConnectionSpeed", NULL},
+};
+
+struct acpi_rsdump_info acpi_rs_dump_uart_serial_bus[19] = {
+	{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_uart_serial_bus),
+	 "Uart Serial Bus", NULL},
+	ACPI_RS_DUMP_COMMON_SERIAL_BUS {ACPI_RSD_2BITFLAG,
+					ACPI_RSD_OFFSET(uart_serial_bus.
+							flow_control),
+					"FlowControl", acpi_gbl_fc_decode},
+	{ACPI_RSD_2BITFLAG, ACPI_RSD_OFFSET(uart_serial_bus.stop_bits),
+	 "StopBits", acpi_gbl_sb_decode},
+	{ACPI_RSD_3BITFLAG, ACPI_RSD_OFFSET(uart_serial_bus.data_bits),
+	 "DataBits", acpi_gbl_bpb_decode},
+	{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(uart_serial_bus.endian), "Endian",
+	 acpi_gbl_ed_decode},
+	{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(uart_serial_bus.parity), "Parity",
+	 acpi_gbl_pt_decode},
+	{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(uart_serial_bus.lines_enabled),
+	 "LinesEnabled", NULL},
+	{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(uart_serial_bus.rx_fifo_size),
+	 "RxFifoSize", NULL},
+	{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(uart_serial_bus.tx_fifo_size),
+	 "TxFifoSize", NULL},
+	{ACPI_RSD_UINT32, ACPI_RSD_OFFSET(uart_serial_bus.default_baud_rate),
+	 "ConnectionSpeed", NULL},
+};
+
 /*
  * Tables used for common address descriptor flag fields
  */
@@ -413,7 +534,14 @@
 			/* Data items, 8/16/32/64 bit */
 
 		case ACPI_RSD_UINT8:
-			acpi_rs_out_integer8(name, ACPI_GET8(target));
+			if (table->pointer) {
+				acpi_rs_out_string(name, ACPI_CAST_PTR(char,
+								       table->
+								       pointer
+								       [*target]));
+			} else {
+				acpi_rs_out_integer8(name, ACPI_GET8(target));
+			}
 			break;
 
 		case ACPI_RSD_UINT16:
@@ -444,6 +572,13 @@
 								       0x03]));
 			break;
 
+		case ACPI_RSD_3BITFLAG:
+			acpi_rs_out_string(name, ACPI_CAST_PTR(char,
+							       table->
+							       pointer[*target &
+								       0x07]));
+			break;
+
 		case ACPI_RSD_SHORTLIST:
 			/*
 			 * Short byte list (single line output) for DMA and IRQ resources
@@ -456,6 +591,20 @@
 			}
 			break;
 
+		case ACPI_RSD_SHORTLISTX:
+			/*
+			 * Short byte list (single line output) for GPIO vendor data
+			 * Note: The list length is obtained from the previous table entry
+			 */
+			if (previous_target) {
+				acpi_rs_out_title(name);
+				acpi_rs_dump_short_byte_list(*previous_target,
+							     *
+							     (ACPI_CAST_INDIRECT_PTR
+							      (u8, target)));
+			}
+			break;
+
 		case ACPI_RSD_LONGLIST:
 			/*
 			 * Long byte list for Vendor resource data
@@ -480,6 +629,18 @@
 			}
 			break;
 
+		case ACPI_RSD_WORDLIST:
+			/*
+			 * Word list for GPIO Pin Table
+			 * Note: The list length is obtained from the previous table entry
+			 */
+			if (previous_target) {
+				acpi_rs_dump_word_list(*previous_target,
+						       *(ACPI_CAST_INDIRECT_PTR
+							 (u16, target)));
+			}
+			break;
+
 		case ACPI_RSD_ADDRESS:
 			/*
 			 * Common flags for all Address resources
@@ -627,14 +788,20 @@
 
 		/* Dump the resource descriptor */
 
-		acpi_rs_dump_descriptor(&resource_list->data,
-					acpi_gbl_dump_resource_dispatch[type]);
+		if (type == ACPI_RESOURCE_TYPE_SERIAL_BUS) {
+			acpi_rs_dump_descriptor(&resource_list->data,
+						acpi_gbl_dump_serial_bus_dispatch
+						[resource_list->data.
+						 common_serial_bus.type]);
+		} else {
+			acpi_rs_dump_descriptor(&resource_list->data,
+						acpi_gbl_dump_resource_dispatch
+						[type]);
+		}
 
 		/* Point to the next resource structure */
 
-		resource_list =
-		    ACPI_ADD_PTR(struct acpi_resource, resource_list,
-				 resource_list->length);
+		resource_list = ACPI_NEXT_RESOURCE(resource_list);
 
 		/* Exit when END_TAG descriptor is reached */
 
@@ -768,4 +935,13 @@
 	}
 }
 
+static void acpi_rs_dump_word_list(u16 length, u16 *data)
+{
+	u16 i;
+
+	for (i = 0; i < length; i++) {
+		acpi_os_printf("%25s%2.2X : %4.4X\n", "Word", i, data[i]);
+	}
+}
+
 #endif
diff --git a/drivers/acpi/acpica/rsinfo.c b/drivers/acpi/acpica/rsinfo.c
index f9ea608..a9fa515 100644
--- a/drivers/acpi/acpica/rsinfo.c
+++ b/drivers/acpi/acpica/rsinfo.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -76,7 +76,10 @@
 	acpi_rs_convert_address64,	/* 0x0D, ACPI_RESOURCE_TYPE_ADDRESS64 */
 	acpi_rs_convert_ext_address64,	/* 0x0E, ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64 */
 	acpi_rs_convert_ext_irq,	/* 0x0F, ACPI_RESOURCE_TYPE_EXTENDED_IRQ */
-	acpi_rs_convert_generic_reg	/* 0x10, ACPI_RESOURCE_TYPE_GENERIC_REGISTER */
+	acpi_rs_convert_generic_reg,	/* 0x10, ACPI_RESOURCE_TYPE_GENERIC_REGISTER */
+	acpi_rs_convert_gpio,	/* 0x11, ACPI_RESOURCE_TYPE_GPIO */
+	acpi_rs_convert_fixed_dma,	/* 0x12, ACPI_RESOURCE_TYPE_FIXED_DMA */
+	NULL,			/* 0x13, ACPI_RESOURCE_TYPE_SERIAL_BUS - Use subtype table below */
 };
 
 /* Dispatch tables for AML-to-resource (Get Resource) conversion functions */
@@ -94,7 +97,7 @@
 	acpi_rs_convert_end_dpf,	/* 0x07, ACPI_RESOURCE_NAME_END_DEPENDENT */
 	acpi_rs_convert_io,	/* 0x08, ACPI_RESOURCE_NAME_IO */
 	acpi_rs_convert_fixed_io,	/* 0x09, ACPI_RESOURCE_NAME_FIXED_IO */
-	NULL,			/* 0x0A, Reserved */
+	acpi_rs_convert_fixed_dma,	/* 0x0A, ACPI_RESOURCE_NAME_FIXED_DMA */
 	NULL,			/* 0x0B, Reserved */
 	NULL,			/* 0x0C, Reserved */
 	NULL,			/* 0x0D, Reserved */
@@ -114,7 +117,19 @@
 	acpi_rs_convert_address16,	/* 0x08, ACPI_RESOURCE_NAME_ADDRESS16 */
 	acpi_rs_convert_ext_irq,	/* 0x09, ACPI_RESOURCE_NAME_EXTENDED_IRQ */
 	acpi_rs_convert_address64,	/* 0x0A, ACPI_RESOURCE_NAME_ADDRESS64 */
-	acpi_rs_convert_ext_address64	/* 0x0B, ACPI_RESOURCE_NAME_EXTENDED_ADDRESS64 */
+	acpi_rs_convert_ext_address64,	/* 0x0B, ACPI_RESOURCE_NAME_EXTENDED_ADDRESS64 */
+	acpi_rs_convert_gpio,	/* 0x0C, ACPI_RESOURCE_NAME_GPIO */
+	NULL,			/* 0x0D, Reserved */
+	NULL,			/* 0x0E, ACPI_RESOURCE_NAME_SERIAL_BUS - Use subtype table below */
+};
+
+/* Subtype table for serial_bus -- I2C, SPI, and UART */
+
+struct acpi_rsconvert_info *acpi_gbl_convert_resource_serial_bus_dispatch[] = {
+	NULL,
+	acpi_rs_convert_i2c_serial_bus,
+	acpi_rs_convert_spi_serial_bus,
+	acpi_rs_convert_uart_serial_bus,
 };
 
 #ifdef ACPI_FUTURE_USAGE
@@ -140,6 +155,16 @@
 	acpi_rs_dump_ext_address64,	/* ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64 */
 	acpi_rs_dump_ext_irq,	/* ACPI_RESOURCE_TYPE_EXTENDED_IRQ */
 	acpi_rs_dump_generic_reg,	/* ACPI_RESOURCE_TYPE_GENERIC_REGISTER */
+	acpi_rs_dump_gpio,	/* ACPI_RESOURCE_TYPE_GPIO */
+	acpi_rs_dump_fixed_dma,	/* ACPI_RESOURCE_TYPE_FIXED_DMA */
+	NULL,			/* ACPI_RESOURCE_TYPE_SERIAL_BUS */
+};
+
+struct acpi_rsdump_info *acpi_gbl_dump_serial_bus_dispatch[] = {
+	NULL,
+	acpi_rs_dump_i2c_serial_bus,	/* AML_RESOURCE_I2C_BUS_TYPE */
+	acpi_rs_dump_spi_serial_bus,	/* AML_RESOURCE_SPI_BUS_TYPE */
+	acpi_rs_dump_uart_serial_bus,	/* AML_RESOURCE_UART_BUS_TYPE */
 };
 #endif
 
@@ -166,7 +191,10 @@
 	sizeof(struct aml_resource_address64),	/* ACPI_RESOURCE_TYPE_ADDRESS64 */
 	sizeof(struct aml_resource_extended_address64),	/*ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64 */
 	sizeof(struct aml_resource_extended_irq),	/* ACPI_RESOURCE_TYPE_EXTENDED_IRQ */
-	sizeof(struct aml_resource_generic_register)	/* ACPI_RESOURCE_TYPE_GENERIC_REGISTER */
+	sizeof(struct aml_resource_generic_register),	/* ACPI_RESOURCE_TYPE_GENERIC_REGISTER */
+	sizeof(struct aml_resource_gpio),	/* ACPI_RESOURCE_TYPE_GPIO */
+	sizeof(struct aml_resource_fixed_dma),	/* ACPI_RESOURCE_TYPE_FIXED_DMA */
+	sizeof(struct aml_resource_common_serialbus),	/* ACPI_RESOURCE_TYPE_SERIAL_BUS */
 };
 
 const u8 acpi_gbl_resource_struct_sizes[] = {
@@ -182,7 +210,7 @@
 	ACPI_RS_SIZE_MIN,
 	ACPI_RS_SIZE(struct acpi_resource_io),
 	ACPI_RS_SIZE(struct acpi_resource_fixed_io),
-	0,
+	ACPI_RS_SIZE(struct acpi_resource_fixed_dma),
 	0,
 	0,
 	0,
@@ -202,5 +230,21 @@
 	ACPI_RS_SIZE(struct acpi_resource_address16),
 	ACPI_RS_SIZE(struct acpi_resource_extended_irq),
 	ACPI_RS_SIZE(struct acpi_resource_address64),
-	ACPI_RS_SIZE(struct acpi_resource_extended_address64)
+	ACPI_RS_SIZE(struct acpi_resource_extended_address64),
+	ACPI_RS_SIZE(struct acpi_resource_gpio),
+	ACPI_RS_SIZE(struct acpi_resource_common_serialbus)
+};
+
+const u8 acpi_gbl_aml_resource_serial_bus_sizes[] = {
+	0,
+	sizeof(struct aml_resource_i2c_serialbus),
+	sizeof(struct aml_resource_spi_serialbus),
+	sizeof(struct aml_resource_uart_serialbus),
+};
+
+const u8 acpi_gbl_resource_struct_serial_bus_sizes[] = {
+	0,
+	ACPI_RS_SIZE(struct acpi_resource_i2c_serialbus),
+	ACPI_RS_SIZE(struct acpi_resource_spi_serialbus),
+	ACPI_RS_SIZE(struct acpi_resource_uart_serialbus),
 };
diff --git a/drivers/acpi/acpica/rsio.c b/drivers/acpi/acpica/rsio.c
index 0c7efef..f6a0810 100644
--- a/drivers/acpi/acpica/rsio.c
+++ b/drivers/acpi/acpica/rsio.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/rsirq.c b/drivers/acpi/acpica/rsirq.c
index 50b8ad2..e23a9ec 100644
--- a/drivers/acpi/acpica/rsirq.c
+++ b/drivers/acpi/acpica/rsirq.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -264,3 +264,34 @@
 	 AML_OFFSET(dma.dma_channel_mask),
 	 ACPI_RS_OFFSET(data.dma.channel_count)}
 };
+
+/*******************************************************************************
+ *
+ * acpi_rs_convert_fixed_dma
+ *
+ ******************************************************************************/
+
+struct acpi_rsconvert_info acpi_rs_convert_fixed_dma[4] = {
+	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_FIXED_DMA,
+	 ACPI_RS_SIZE(struct acpi_resource_fixed_dma),
+	 ACPI_RSC_TABLE_SIZE(acpi_rs_convert_fixed_dma)},
+
+	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_FIXED_DMA,
+	 sizeof(struct aml_resource_fixed_dma),
+	 0},
+
+	/*
+	 * These fields are contiguous in both the source and destination:
+	 * request_lines
+	 * Channels
+	 */
+
+	{ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.fixed_dma.request_lines),
+	 AML_OFFSET(fixed_dma.request_lines),
+	 2},
+
+	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.fixed_dma.width),
+	 AML_OFFSET(fixed_dma.width),
+	 1},
+
+};
diff --git a/drivers/acpi/acpica/rslist.c b/drivers/acpi/acpica/rslist.c
index 1bfcef7..9be129f 100644
--- a/drivers/acpi/acpica/rslist.c
+++ b/drivers/acpi/acpica/rslist.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -70,6 +70,8 @@
 	struct acpi_resource **resource_ptr =
 	    ACPI_CAST_INDIRECT_PTR(struct acpi_resource, context);
 	struct acpi_resource *resource;
+	union aml_resource *aml_resource;
+	struct acpi_rsconvert_info *conversion_table;
 	acpi_status status;
 
 	ACPI_FUNCTION_TRACE(rs_convert_aml_to_resources);
@@ -84,14 +86,37 @@
 			      "Misaligned resource pointer %p", resource));
 	}
 
+	/* Get the appropriate conversion info table */
+
+	aml_resource = ACPI_CAST_PTR(union aml_resource, aml);
+	if (acpi_ut_get_resource_type(aml) == ACPI_RESOURCE_NAME_SERIAL_BUS) {
+		if (aml_resource->common_serial_bus.type >
+		    AML_RESOURCE_MAX_SERIALBUSTYPE) {
+			conversion_table = NULL;
+		} else {
+			/* This is an I2C, SPI, or UART serial_bus descriptor */
+
+			conversion_table =
+			    acpi_gbl_convert_resource_serial_bus_dispatch
+			    [aml_resource->common_serial_bus.type];
+		}
+	} else {
+		conversion_table =
+		    acpi_gbl_get_resource_dispatch[resource_index];
+	}
+
+	if (!conversion_table) {
+		ACPI_ERROR((AE_INFO,
+			    "Invalid/unsupported resource descriptor: Type 0x%2.2X",
+			    resource_index));
+		return (AE_AML_INVALID_RESOURCE_TYPE);
+	}
+
 	/* Convert the AML byte stream resource to a local resource struct */
 
 	status =
-	    acpi_rs_convert_aml_to_resource(resource,
-					    ACPI_CAST_PTR(union aml_resource,
-							  aml),
-					    acpi_gbl_get_resource_dispatch
-					    [resource_index]);
+	    acpi_rs_convert_aml_to_resource(resource, aml_resource,
+					    conversion_table);
 	if (ACPI_FAILURE(status)) {
 		ACPI_EXCEPTION((AE_INFO, status,
 				"Could not convert AML resource (Type 0x%X)",
@@ -106,7 +131,7 @@
 
 	/* Point to the next structure in the output buffer */
 
-	*resource_ptr = ACPI_ADD_PTR(void, resource, resource->length);
+	*resource_ptr = ACPI_NEXT_RESOURCE(resource);
 	return_ACPI_STATUS(AE_OK);
 }
 
@@ -135,6 +160,7 @@
 {
 	u8 *aml = output_buffer;
 	u8 *end_aml = output_buffer + aml_size_needed;
+	struct acpi_rsconvert_info *conversion_table;
 	acpi_status status;
 
 	ACPI_FUNCTION_TRACE(rs_convert_resources_to_aml);
@@ -154,11 +180,34 @@
 
 		/* Perform the conversion */
 
-		status = acpi_rs_convert_resource_to_aml(resource, ACPI_CAST_PTR(union
-										 aml_resource,
-										 aml),
-							 acpi_gbl_set_resource_dispatch
-							 [resource->type]);
+		if (resource->type == ACPI_RESOURCE_TYPE_SERIAL_BUS) {
+			if (resource->data.common_serial_bus.type >
+			    AML_RESOURCE_MAX_SERIALBUSTYPE) {
+				conversion_table = NULL;
+			} else {
+				/* This is an I2C, SPI, or UART serial_bus descriptor */
+
+				conversion_table =
+				    acpi_gbl_convert_resource_serial_bus_dispatch
+				    [resource->data.common_serial_bus.type];
+			}
+		} else {
+			conversion_table =
+			    acpi_gbl_set_resource_dispatch[resource->type];
+		}
+
+		if (!conversion_table) {
+			ACPI_ERROR((AE_INFO,
+				    "Invalid/unsupported resource descriptor: Type 0x%2.2X",
+				    resource->type));
+			return (AE_AML_INVALID_RESOURCE_TYPE);
+		}
+
+		status = acpi_rs_convert_resource_to_aml(resource,
+						         ACPI_CAST_PTR(union
+								       aml_resource,
+								       aml),
+							 conversion_table);
 		if (ACPI_FAILURE(status)) {
 			ACPI_EXCEPTION((AE_INFO, status,
 					"Could not convert resource (type 0x%X) to AML",
@@ -192,9 +241,7 @@
 
 		/* Point to the next input resource descriptor */
 
-		resource =
-		    ACPI_ADD_PTR(struct acpi_resource, resource,
-				 resource->length);
+		resource = ACPI_NEXT_RESOURCE(resource);
 	}
 
 	/* Completed buffer, but did not find an end_tag resource descriptor */
diff --git a/drivers/acpi/acpica/rsmemory.c b/drivers/acpi/acpica/rsmemory.c
index 7cc6d86..4fd611a 100644
--- a/drivers/acpi/acpica/rsmemory.c
+++ b/drivers/acpi/acpica/rsmemory.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/rsmisc.c b/drivers/acpi/acpica/rsmisc.c
index 410264b..8073b37 100644
--- a/drivers/acpi/acpica/rsmisc.c
+++ b/drivers/acpi/acpica/rsmisc.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -83,6 +83,10 @@
 
 	ACPI_FUNCTION_TRACE(rs_convert_aml_to_resource);
 
+	if (!info) {
+		return_ACPI_STATUS(AE_BAD_PARAMETER);
+	}
+
 	if (((acpi_size) resource) & 0x3) {
 
 		/* Each internal resource struct is expected to be 32-bit aligned */
@@ -101,7 +105,6 @@
 	 * table length (# of table entries)
 	 */
 	count = INIT_TABLE_LENGTH(info);
-
 	while (count) {
 		/*
 		 * Source is the external AML byte stream buffer,
@@ -145,6 +148,14 @@
 			    ((ACPI_GET8(source) >> info->value) & 0x03);
 			break;
 
+		case ACPI_RSC_3BITFLAG:
+			/*
+			 * Mask and shift the flag bits
+			 */
+			ACPI_SET8(destination) = (u8)
+			    ((ACPI_GET8(source) >> info->value) & 0x07);
+			break;
+
 		case ACPI_RSC_COUNT:
 
 			item_count = ACPI_GET8(source);
@@ -163,6 +174,69 @@
 			    (info->value * (item_count - 1));
 			break;
 
+		case ACPI_RSC_COUNT_GPIO_PIN:
+
+			target = ACPI_ADD_PTR(void, aml, info->value);
+			item_count = ACPI_GET16(target) - ACPI_GET16(source);
+
+			resource->length = resource->length + item_count;
+			item_count = item_count / 2;
+			ACPI_SET16(destination) = item_count;
+			break;
+
+		case ACPI_RSC_COUNT_GPIO_VEN:
+
+			item_count = ACPI_GET8(source);
+			ACPI_SET8(destination) = (u8)item_count;
+
+			resource->length = resource->length +
+			    (info->value * item_count);
+			break;
+
+		case ACPI_RSC_COUNT_GPIO_RES:
+
+			/*
+			 * Vendor data is optional (length/offset may both be zero)
+			 * Examine vendor data length field first
+			 */
+			target = ACPI_ADD_PTR(void, aml, (info->value + 2));
+			if (ACPI_GET16(target)) {
+
+				/* Use vendor offset to get resource source length */
+
+				target = ACPI_ADD_PTR(void, aml, info->value);
+				item_count =
+				    ACPI_GET16(target) - ACPI_GET16(source);
+			} else {
+				/* No vendor data to worry about */
+
+				item_count = aml->large_header.resource_length +
+				    sizeof(struct aml_resource_large_header) -
+				    ACPI_GET16(source);
+			}
+
+			resource->length = resource->length + item_count;
+			ACPI_SET16(destination) = item_count;
+			break;
+
+		case ACPI_RSC_COUNT_SERIAL_VEN:
+
+			item_count = ACPI_GET16(source) - info->value;
+
+			resource->length = resource->length + item_count;
+			ACPI_SET16(destination) = item_count;
+			break;
+
+		case ACPI_RSC_COUNT_SERIAL_RES:
+
+			item_count = (aml_resource_length +
+				      sizeof(struct aml_resource_large_header))
+			    - ACPI_GET16(source) - info->value;
+
+			resource->length = resource->length + item_count;
+			ACPI_SET16(destination) = item_count;
+			break;
+
 		case ACPI_RSC_LENGTH:
 
 			resource->length = resource->length + info->value;
@@ -183,6 +257,72 @@
 					  info->opcode);
 			break;
 
+		case ACPI_RSC_MOVE_GPIO_PIN:
+
+			/* Generate and set the PIN data pointer */
+
+			target = (char *)ACPI_ADD_PTR(void, resource,
+						      (resource->length -
+						       item_count * 2));
+			*(u16 **)destination = ACPI_CAST_PTR(u16, target);
+
+			/* Copy the PIN data */
+
+			source = ACPI_ADD_PTR(void, aml, ACPI_GET16(source));
+			acpi_rs_move_data(target, source, item_count,
+					  info->opcode);
+			break;
+
+		case ACPI_RSC_MOVE_GPIO_RES:
+
+			/* Generate and set the resource_source string pointer */
+
+			target = (char *)ACPI_ADD_PTR(void, resource,
+						      (resource->length -
+						       item_count));
+			*(u8 **)destination = ACPI_CAST_PTR(u8, target);
+
+			/* Copy the resource_source string */
+
+			source = ACPI_ADD_PTR(void, aml, ACPI_GET16(source));
+			acpi_rs_move_data(target, source, item_count,
+					  info->opcode);
+			break;
+
+		case ACPI_RSC_MOVE_SERIAL_VEN:
+
+			/* Generate and set the Vendor Data pointer */
+
+			target = (char *)ACPI_ADD_PTR(void, resource,
+						      (resource->length -
+						       item_count));
+			*(u8 **)destination = ACPI_CAST_PTR(u8, target);
+
+			/* Copy the Vendor Data */
+
+			source = ACPI_ADD_PTR(void, aml, info->value);
+			acpi_rs_move_data(target, source, item_count,
+					  info->opcode);
+			break;
+
+		case ACPI_RSC_MOVE_SERIAL_RES:
+
+			/* Generate and set the resource_source string pointer */
+
+			target = (char *)ACPI_ADD_PTR(void, resource,
+						      (resource->length -
+						       item_count));
+			*(u8 **)destination = ACPI_CAST_PTR(u8, target);
+
+			/* Copy the resource_source string */
+
+			source =
+			    ACPI_ADD_PTR(void, aml,
+					 (ACPI_GET16(source) + info->value));
+			acpi_rs_move_data(target, source, item_count,
+					  info->opcode);
+			break;
+
 		case ACPI_RSC_SET8:
 
 			ACPI_MEMSET(destination, info->aml_offset, info->value);
@@ -219,13 +359,18 @@
 			 * Optional resource_source (Index and String). This is the more
 			 * complicated case used by the Interrupt() macro
 			 */
-			target =
-			    ACPI_ADD_PTR(char, resource,
-					 info->aml_offset + (item_count * 4));
+			target = ACPI_ADD_PTR(char, resource,
+					      info->aml_offset +
+					      (item_count * 4));
 
 			resource->length +=
 			    acpi_rs_get_resource_source(aml_resource_length,
-							(acpi_rs_length) (((item_count - 1) * sizeof(u32)) + info->value), destination, aml, target);
+							(acpi_rs_length)
+							(((item_count -
+							   1) * sizeof(u32)) +
+							 info->value),
+							destination, aml,
+							target);
 			break;
 
 		case ACPI_RSC_BITMASK:
@@ -327,6 +472,7 @@
 {
 	void *source = NULL;
 	void *destination;
+	char *target;
 	acpi_rsdesc_size aml_length = 0;
 	u8 count;
 	u16 temp16 = 0;
@@ -334,6 +480,10 @@
 
 	ACPI_FUNCTION_TRACE(rs_convert_resource_to_aml);
 
+	if (!info) {
+		return_ACPI_STATUS(AE_BAD_PARAMETER);
+	}
+
 	/*
 	 * First table entry must be ACPI_RSC_INITxxx and must contain the
 	 * table length (# of table entries)
@@ -383,6 +533,14 @@
 			    ((ACPI_GET8(source) & 0x03) << info->value);
 			break;
 
+		case ACPI_RSC_3BITFLAG:
+			/*
+			 * Mask and shift the flag bits
+			 */
+			ACPI_SET8(destination) |= (u8)
+			    ((ACPI_GET8(source) & 0x07) << info->value);
+			break;
+
 		case ACPI_RSC_COUNT:
 
 			item_count = ACPI_GET8(source);
@@ -400,6 +558,63 @@
 			acpi_rs_set_resource_length(aml_length, aml);
 			break;
 
+		case ACPI_RSC_COUNT_GPIO_PIN:
+
+			item_count = ACPI_GET16(source);
+			ACPI_SET16(destination) = (u16)aml_length;
+
+			aml_length = (u16)(aml_length + item_count * 2);
+			target = ACPI_ADD_PTR(void, aml, info->value);
+			ACPI_SET16(target) = (u16)aml_length;
+			acpi_rs_set_resource_length(aml_length, aml);
+			break;
+
+		case ACPI_RSC_COUNT_GPIO_VEN:
+
+			item_count = ACPI_GET16(source);
+			ACPI_SET16(destination) = (u16)item_count;
+
+			aml_length =
+			    (u16)(aml_length + (info->value * item_count));
+			acpi_rs_set_resource_length(aml_length, aml);
+			break;
+
+		case ACPI_RSC_COUNT_GPIO_RES:
+
+			/* Set resource source string length */
+
+			item_count = ACPI_GET16(source);
+			ACPI_SET16(destination) = (u16)aml_length;
+
+			/* Compute offset for the Vendor Data */
+
+			aml_length = (u16)(aml_length + item_count);
+			target = ACPI_ADD_PTR(void, aml, info->value);
+
+			/* Set vendor offset only if there is vendor data */
+
+			if (resource->data.gpio.vendor_length) {
+				ACPI_SET16(target) = (u16)aml_length;
+			}
+
+			acpi_rs_set_resource_length(aml_length, aml);
+			break;
+
+		case ACPI_RSC_COUNT_SERIAL_VEN:
+
+			item_count = ACPI_GET16(source);
+			ACPI_SET16(destination) = item_count + info->value;
+			aml_length = (u16)(aml_length + item_count);
+			acpi_rs_set_resource_length(aml_length, aml);
+			break;
+
+		case ACPI_RSC_COUNT_SERIAL_RES:
+
+			item_count = ACPI_GET16(source);
+			aml_length = (u16)(aml_length + item_count);
+			acpi_rs_set_resource_length(aml_length, aml);
+			break;
+
 		case ACPI_RSC_LENGTH:
 
 			acpi_rs_set_resource_length(info->value, aml);
@@ -417,6 +632,48 @@
 					  info->opcode);
 			break;
 
+		case ACPI_RSC_MOVE_GPIO_PIN:
+
+			destination = (char *)ACPI_ADD_PTR(void, aml,
+							   ACPI_GET16
+							   (destination));
+			source = *(u16 **)source;
+			acpi_rs_move_data(destination, source, item_count,
+					  info->opcode);
+			break;
+
+		case ACPI_RSC_MOVE_GPIO_RES:
+
+			/* Used for both resource_source string and vendor_data */
+
+			destination = (char *)ACPI_ADD_PTR(void, aml,
+							   ACPI_GET16
+							   (destination));
+			source = *(u8 **)source;
+			acpi_rs_move_data(destination, source, item_count,
+					  info->opcode);
+			break;
+
+		case ACPI_RSC_MOVE_SERIAL_VEN:
+
+			destination = (char *)ACPI_ADD_PTR(void, aml,
+							   (aml_length -
+							    item_count));
+			source = *(u8 **)source;
+			acpi_rs_move_data(destination, source, item_count,
+					  info->opcode);
+			break;
+
+		case ACPI_RSC_MOVE_SERIAL_RES:
+
+			destination = (char *)ACPI_ADD_PTR(void, aml,
+							   (aml_length -
+							    item_count));
+			source = *(u8 **)source;
+			acpi_rs_move_data(destination, source, item_count,
+					  info->opcode);
+			break;
+
 		case ACPI_RSC_ADDRESS:
 
 			/* Set the Resource Type, General Flags, and Type-Specific Flags */
diff --git a/drivers/acpi/acpica/rsserial.c b/drivers/acpi/acpica/rsserial.c
new file mode 100644
index 0000000..9aa5e68
--- /dev/null
+++ b/drivers/acpi/acpica/rsserial.c
@@ -0,0 +1,441 @@
+/*******************************************************************************
+ *
+ * Module Name: rsserial - GPIO/serial_bus resource descriptors
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2012, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acresrc.h"
+
+#define _COMPONENT          ACPI_RESOURCES
+ACPI_MODULE_NAME("rsserial")
+
+/*******************************************************************************
+ *
+ * acpi_rs_convert_gpio
+ *
+ ******************************************************************************/
+struct acpi_rsconvert_info acpi_rs_convert_gpio[17] = {
+	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_GPIO,
+	 ACPI_RS_SIZE(struct acpi_resource_gpio),
+	 ACPI_RSC_TABLE_SIZE(acpi_rs_convert_gpio)},
+
+	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_GPIO,
+	 sizeof(struct aml_resource_gpio),
+	 0},
+
+	/*
+	 * These fields are contiguous in both the source and destination:
+	 * revision_id
+	 * connection_type
+	 */
+	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.gpio.revision_id),
+	 AML_OFFSET(gpio.revision_id),
+	 2},
+
+	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.gpio.producer_consumer),
+	 AML_OFFSET(gpio.flags),
+	 0},
+
+	{ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.gpio.sharable),
+	 AML_OFFSET(gpio.int_flags),
+	 3},
+
+	{ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.gpio.io_restriction),
+	 AML_OFFSET(gpio.int_flags),
+	 0},
+
+	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.gpio.triggering),
+	 AML_OFFSET(gpio.int_flags),
+	 0},
+
+	{ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.gpio.polarity),
+	 AML_OFFSET(gpio.int_flags),
+	 1},
+
+	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.gpio.pin_config),
+	 AML_OFFSET(gpio.pin_config),
+	 1},
+
+	/*
+	 * These fields are contiguous in both the source and destination:
+	 * drive_strength
+	 * debounce_timeout
+	 */
+	{ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.gpio.drive_strength),
+	 AML_OFFSET(gpio.drive_strength),
+	 2},
+
+	/* Pin Table */
+
+	{ACPI_RSC_COUNT_GPIO_PIN, ACPI_RS_OFFSET(data.gpio.pin_table_length),
+	 AML_OFFSET(gpio.pin_table_offset),
+	 AML_OFFSET(gpio.res_source_offset)},
+
+	{ACPI_RSC_MOVE_GPIO_PIN, ACPI_RS_OFFSET(data.gpio.pin_table),
+	 AML_OFFSET(gpio.pin_table_offset),
+	 0},
+
+	/* Resource Source */
+
+	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.gpio.resource_source.index),
+	 AML_OFFSET(gpio.res_source_index),
+	 1},
+
+	{ACPI_RSC_COUNT_GPIO_RES,
+	 ACPI_RS_OFFSET(data.gpio.resource_source.string_length),
+	 AML_OFFSET(gpio.res_source_offset),
+	 AML_OFFSET(gpio.vendor_offset)},
+
+	{ACPI_RSC_MOVE_GPIO_RES,
+	 ACPI_RS_OFFSET(data.gpio.resource_source.string_ptr),
+	 AML_OFFSET(gpio.res_source_offset),
+	 0},
+
+	/* Vendor Data */
+
+	{ACPI_RSC_COUNT_GPIO_VEN, ACPI_RS_OFFSET(data.gpio.vendor_length),
+	 AML_OFFSET(gpio.vendor_length),
+	 1},
+
+	{ACPI_RSC_MOVE_GPIO_RES, ACPI_RS_OFFSET(data.gpio.vendor_data),
+	 AML_OFFSET(gpio.vendor_offset),
+	 0},
+};
+
+/*******************************************************************************
+ *
+ * acpi_rs_convert_i2c_serial_bus
+ *
+ ******************************************************************************/
+
+struct acpi_rsconvert_info acpi_rs_convert_i2c_serial_bus[16] = {
+	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_SERIAL_BUS,
+	 ACPI_RS_SIZE(struct acpi_resource_i2c_serialbus),
+	 ACPI_RSC_TABLE_SIZE(acpi_rs_convert_i2c_serial_bus)},
+
+	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_SERIAL_BUS,
+	 sizeof(struct aml_resource_i2c_serialbus),
+	 0},
+
+	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.common_serial_bus.revision_id),
+	 AML_OFFSET(common_serial_bus.revision_id),
+	 1},
+
+	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.common_serial_bus.type),
+	 AML_OFFSET(common_serial_bus.type),
+	 1},
+
+	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.common_serial_bus.slave_mode),
+	 AML_OFFSET(common_serial_bus.flags),
+	 0},
+
+	{ACPI_RSC_1BITFLAG,
+	 ACPI_RS_OFFSET(data.common_serial_bus.producer_consumer),
+	 AML_OFFSET(common_serial_bus.flags),
+	 1},
+
+	{ACPI_RSC_MOVE8,
+	 ACPI_RS_OFFSET(data.common_serial_bus.type_revision_id),
+	 AML_OFFSET(common_serial_bus.type_revision_id),
+	 1},
+
+	{ACPI_RSC_MOVE16,
+	 ACPI_RS_OFFSET(data.common_serial_bus.type_data_length),
+	 AML_OFFSET(common_serial_bus.type_data_length),
+	 1},
+
+	/* Vendor data */
+
+	{ACPI_RSC_COUNT_SERIAL_VEN,
+	 ACPI_RS_OFFSET(data.common_serial_bus.vendor_length),
+	 AML_OFFSET(common_serial_bus.type_data_length),
+	 AML_RESOURCE_I2C_MIN_DATA_LEN},
+
+	{ACPI_RSC_MOVE_SERIAL_VEN,
+	 ACPI_RS_OFFSET(data.common_serial_bus.vendor_data),
+	 0,
+	 sizeof(struct aml_resource_i2c_serialbus)},
+
+	/* Resource Source */
+
+	{ACPI_RSC_MOVE8,
+	 ACPI_RS_OFFSET(data.common_serial_bus.resource_source.index),
+	 AML_OFFSET(common_serial_bus.res_source_index),
+	 1},
+
+	{ACPI_RSC_COUNT_SERIAL_RES,
+	 ACPI_RS_OFFSET(data.common_serial_bus.resource_source.string_length),
+	 AML_OFFSET(common_serial_bus.type_data_length),
+	 sizeof(struct aml_resource_common_serialbus)},
+
+	{ACPI_RSC_MOVE_SERIAL_RES,
+	 ACPI_RS_OFFSET(data.common_serial_bus.resource_source.string_ptr),
+	 AML_OFFSET(common_serial_bus.type_data_length),
+	 sizeof(struct aml_resource_common_serialbus)},
+
+	/* I2C bus type specific */
+
+	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.i2c_serial_bus.access_mode),
+	 AML_OFFSET(i2c_serial_bus.type_specific_flags),
+	 0},
+
+	{ACPI_RSC_MOVE32, ACPI_RS_OFFSET(data.i2c_serial_bus.connection_speed),
+	 AML_OFFSET(i2c_serial_bus.connection_speed),
+	 1},
+
+	{ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.i2c_serial_bus.slave_address),
+	 AML_OFFSET(i2c_serial_bus.slave_address),
+	 1},
+};
+
+/*******************************************************************************
+ *
+ * acpi_rs_convert_spi_serial_bus
+ *
+ ******************************************************************************/
+
+struct acpi_rsconvert_info acpi_rs_convert_spi_serial_bus[20] = {
+	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_SERIAL_BUS,
+	 ACPI_RS_SIZE(struct acpi_resource_spi_serialbus),
+	 ACPI_RSC_TABLE_SIZE(acpi_rs_convert_spi_serial_bus)},
+
+	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_SERIAL_BUS,
+	 sizeof(struct aml_resource_spi_serialbus),
+	 0},
+
+	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.common_serial_bus.revision_id),
+	 AML_OFFSET(common_serial_bus.revision_id),
+	 1},
+
+	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.common_serial_bus.type),
+	 AML_OFFSET(common_serial_bus.type),
+	 1},
+
+	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.common_serial_bus.slave_mode),
+	 AML_OFFSET(common_serial_bus.flags),
+	 0},
+
+	{ACPI_RSC_1BITFLAG,
+	 ACPI_RS_OFFSET(data.common_serial_bus.producer_consumer),
+	 AML_OFFSET(common_serial_bus.flags),
+	 1},
+
+	{ACPI_RSC_MOVE8,
+	 ACPI_RS_OFFSET(data.common_serial_bus.type_revision_id),
+	 AML_OFFSET(common_serial_bus.type_revision_id),
+	 1},
+
+	{ACPI_RSC_MOVE16,
+	 ACPI_RS_OFFSET(data.common_serial_bus.type_data_length),
+	 AML_OFFSET(common_serial_bus.type_data_length),
+	 1},
+
+	/* Vendor data */
+
+	{ACPI_RSC_COUNT_SERIAL_VEN,
+	 ACPI_RS_OFFSET(data.common_serial_bus.vendor_length),
+	 AML_OFFSET(common_serial_bus.type_data_length),
+	 AML_RESOURCE_SPI_MIN_DATA_LEN},
+
+	{ACPI_RSC_MOVE_SERIAL_VEN,
+	 ACPI_RS_OFFSET(data.common_serial_bus.vendor_data),
+	 0,
+	 sizeof(struct aml_resource_spi_serialbus)},
+
+	/* Resource Source */
+
+	{ACPI_RSC_MOVE8,
+	 ACPI_RS_OFFSET(data.common_serial_bus.resource_source.index),
+	 AML_OFFSET(common_serial_bus.res_source_index),
+	 1},
+
+	{ACPI_RSC_COUNT_SERIAL_RES,
+	 ACPI_RS_OFFSET(data.common_serial_bus.resource_source.string_length),
+	 AML_OFFSET(common_serial_bus.type_data_length),
+	 sizeof(struct aml_resource_common_serialbus)},
+
+	{ACPI_RSC_MOVE_SERIAL_RES,
+	 ACPI_RS_OFFSET(data.common_serial_bus.resource_source.string_ptr),
+	 AML_OFFSET(common_serial_bus.type_data_length),
+	 sizeof(struct aml_resource_common_serialbus)},
+
+	/* Spi bus type specific  */
+
+	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.spi_serial_bus.wire_mode),
+	 AML_OFFSET(spi_serial_bus.type_specific_flags),
+	 0},
+
+	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.spi_serial_bus.device_polarity),
+	 AML_OFFSET(spi_serial_bus.type_specific_flags),
+	 1},
+
+	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.spi_serial_bus.data_bit_length),
+	 AML_OFFSET(spi_serial_bus.data_bit_length),
+	 1},
+
+	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.spi_serial_bus.clock_phase),
+	 AML_OFFSET(spi_serial_bus.clock_phase),
+	 1},
+
+	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.spi_serial_bus.clock_polarity),
+	 AML_OFFSET(spi_serial_bus.clock_polarity),
+	 1},
+
+	{ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.spi_serial_bus.device_selection),
+	 AML_OFFSET(spi_serial_bus.device_selection),
+	 1},
+
+	{ACPI_RSC_MOVE32, ACPI_RS_OFFSET(data.spi_serial_bus.connection_speed),
+	 AML_OFFSET(spi_serial_bus.connection_speed),
+	 1},
+};
+
+/*******************************************************************************
+ *
+ * acpi_rs_convert_uart_serial_bus
+ *
+ ******************************************************************************/
+
+struct acpi_rsconvert_info acpi_rs_convert_uart_serial_bus[22] = {
+	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_SERIAL_BUS,
+	 ACPI_RS_SIZE(struct acpi_resource_uart_serialbus),
+	 ACPI_RSC_TABLE_SIZE(acpi_rs_convert_uart_serial_bus)},
+
+	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_SERIAL_BUS,
+	 sizeof(struct aml_resource_uart_serialbus),
+	 0},
+
+	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.common_serial_bus.revision_id),
+	 AML_OFFSET(common_serial_bus.revision_id),
+	 1},
+
+	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.common_serial_bus.type),
+	 AML_OFFSET(common_serial_bus.type),
+	 1},
+
+	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.common_serial_bus.slave_mode),
+	 AML_OFFSET(common_serial_bus.flags),
+	 0},
+
+	{ACPI_RSC_1BITFLAG,
+	 ACPI_RS_OFFSET(data.common_serial_bus.producer_consumer),
+	 AML_OFFSET(common_serial_bus.flags),
+	 1},
+
+	{ACPI_RSC_MOVE8,
+	 ACPI_RS_OFFSET(data.common_serial_bus.type_revision_id),
+	 AML_OFFSET(common_serial_bus.type_revision_id),
+	 1},
+
+	{ACPI_RSC_MOVE16,
+	 ACPI_RS_OFFSET(data.common_serial_bus.type_data_length),
+	 AML_OFFSET(common_serial_bus.type_data_length),
+	 1},
+
+	/* Vendor data */
+
+	{ACPI_RSC_COUNT_SERIAL_VEN,
+	 ACPI_RS_OFFSET(data.common_serial_bus.vendor_length),
+	 AML_OFFSET(common_serial_bus.type_data_length),
+	 AML_RESOURCE_UART_MIN_DATA_LEN},
+
+	{ACPI_RSC_MOVE_SERIAL_VEN,
+	 ACPI_RS_OFFSET(data.common_serial_bus.vendor_data),
+	 0,
+	 sizeof(struct aml_resource_uart_serialbus)},
+
+	/* Resource Source */
+
+	{ACPI_RSC_MOVE8,
+	 ACPI_RS_OFFSET(data.common_serial_bus.resource_source.index),
+	 AML_OFFSET(common_serial_bus.res_source_index),
+	 1},
+
+	{ACPI_RSC_COUNT_SERIAL_RES,
+	 ACPI_RS_OFFSET(data.common_serial_bus.resource_source.string_length),
+	 AML_OFFSET(common_serial_bus.type_data_length),
+	 sizeof(struct aml_resource_common_serialbus)},
+
+	{ACPI_RSC_MOVE_SERIAL_RES,
+	 ACPI_RS_OFFSET(data.common_serial_bus.resource_source.string_ptr),
+	 AML_OFFSET(common_serial_bus.type_data_length),
+	 sizeof(struct aml_resource_common_serialbus)},
+
+	/* Uart bus type specific  */
+
+	{ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.uart_serial_bus.flow_control),
+	 AML_OFFSET(uart_serial_bus.type_specific_flags),
+	 0},
+
+	{ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.uart_serial_bus.stop_bits),
+	 AML_OFFSET(uart_serial_bus.type_specific_flags),
+	 2},
+
+	{ACPI_RSC_3BITFLAG, ACPI_RS_OFFSET(data.uart_serial_bus.data_bits),
+	 AML_OFFSET(uart_serial_bus.type_specific_flags),
+	 4},
+
+	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.uart_serial_bus.endian),
+	 AML_OFFSET(uart_serial_bus.type_specific_flags),
+	 7},
+
+	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.uart_serial_bus.parity),
+	 AML_OFFSET(uart_serial_bus.parity),
+	 1},
+
+	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.uart_serial_bus.lines_enabled),
+	 AML_OFFSET(uart_serial_bus.lines_enabled),
+	 1},
+
+	{ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.uart_serial_bus.rx_fifo_size),
+	 AML_OFFSET(uart_serial_bus.rx_fifo_size),
+	 1},
+
+	{ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.uart_serial_bus.tx_fifo_size),
+	 AML_OFFSET(uart_serial_bus.tx_fifo_size),
+	 1},
+
+	{ACPI_RSC_MOVE32,
+	 ACPI_RS_OFFSET(data.uart_serial_bus.default_baud_rate),
+	 AML_OFFSET(uart_serial_bus.default_baud_rate),
+	 1},
+};
diff --git a/drivers/acpi/acpica/rsutils.c b/drivers/acpi/acpica/rsutils.c
index 231811e..433a375 100644
--- a/drivers/acpi/acpica/rsutils.c
+++ b/drivers/acpi/acpica/rsutils.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -144,6 +144,9 @@
 			 * since there are no alignment or endian issues
 			 */
 		case ACPI_RSC_MOVE8:
+		case ACPI_RSC_MOVE_GPIO_RES:
+		case ACPI_RSC_MOVE_SERIAL_VEN:
+		case ACPI_RSC_MOVE_SERIAL_RES:
 			ACPI_MEMCPY(destination, source, item_count);
 			return;
 
@@ -153,6 +156,7 @@
 			 * misaligned memory transfers
 			 */
 		case ACPI_RSC_MOVE16:
+		case ACPI_RSC_MOVE_GPIO_PIN:
 			ACPI_MOVE_16_TO_16(&ACPI_CAST_PTR(u16, destination)[i],
 					   &ACPI_CAST_PTR(u16, source)[i]);
 			break;
@@ -590,6 +594,56 @@
 
 /*******************************************************************************
  *
+ * FUNCTION:    acpi_rs_get_aei_method_data
+ *
+ * PARAMETERS:  Node            - Device node
+ *              ret_buffer      - Pointer to a buffer structure for the
+ *                                results
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: This function is called to get the _AEI value of an object
+ *              contained in an object specified by the handle passed in
+ *
+ *              If the function fails an appropriate status will be returned
+ *              and the contents of the callers buffer is undefined.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_get_aei_method_data(struct acpi_namespace_node *node,
+			    struct acpi_buffer *ret_buffer)
+{
+	union acpi_operand_object *obj_desc;
+	acpi_status status;
+
+	ACPI_FUNCTION_TRACE(rs_get_aei_method_data);
+
+	/* Parameters guaranteed valid by caller */
+
+	/* Execute the method, no parameters */
+
+	status = acpi_ut_evaluate_object(node, METHOD_NAME__AEI,
+					 ACPI_BTYPE_BUFFER, &obj_desc);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	/*
+	 * Make the call to create a resource linked list from the
+	 * byte stream buffer that comes back from the _CRS method
+	 * execution.
+	 */
+	status = acpi_rs_create_resource_list(obj_desc, ret_buffer);
+
+	/* On exit, we must delete the object returned by evaluate_object */
+
+	acpi_ut_remove_reference(obj_desc);
+	return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
  * FUNCTION:    acpi_rs_get_method_data
  *
  * PARAMETERS:  Handle          - Handle to the containing object
diff --git a/drivers/acpi/acpica/rsxface.c b/drivers/acpi/acpica/rsxface.c
index fe86b37..f58c098 100644
--- a/drivers/acpi/acpica/rsxface.c
+++ b/drivers/acpi/acpica/rsxface.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -307,6 +307,46 @@
 
 ACPI_EXPORT_SYMBOL(acpi_set_current_resources)
 
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_get_event_resources
+ *
+ * PARAMETERS:  device_handle   - Handle to the device object for the
+ *                                device we are getting resources
+ *              in_buffer       - Pointer to a buffer containing the
+ *                                resources to be set for the device
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: This function is called to get the event resources for a
+ *              specific device. The caller must first acquire a handle for
+ *              the desired device. The resource data is passed to the routine
+ *              the buffer pointed to by the in_buffer variable. Uses the
+ *              _AEI method.
+ *
+ ******************************************************************************/
+acpi_status
+acpi_get_event_resources(acpi_handle device_handle,
+			 struct acpi_buffer *ret_buffer)
+{
+	acpi_status status;
+	struct acpi_namespace_node *node;
+
+	ACPI_FUNCTION_TRACE(acpi_get_event_resources);
+
+	/* Validate parameters then dispatch to internal routine */
+
+	status = acpi_rs_validate_parameters(device_handle, ret_buffer, &node);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	status = acpi_rs_get_aei_method_data(node, ret_buffer);
+	return_ACPI_STATUS(status);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_get_event_resources)
+
 /******************************************************************************
  *
  * FUNCTION:    acpi_resource_to_address64
@@ -486,8 +526,9 @@
  *
  * PARAMETERS:  device_handle   - Handle to the device object for the
  *                                device we are querying
- *              Name            - Method name of the resources we want
- *                                (METHOD_NAME__CRS or METHOD_NAME__PRS)
+ *              Name            - Method name of the resources we want.
+ *                                (METHOD_NAME__CRS, METHOD_NAME__PRS, or
+ *                                METHOD_NAME__AEI)
  *              user_function   - Called for each resource
  *              Context         - Passed to user_function
  *
@@ -514,11 +555,12 @@
 
 	if (!device_handle || !user_function || !name ||
 	    (!ACPI_COMPARE_NAME(name, METHOD_NAME__CRS) &&
-	     !ACPI_COMPARE_NAME(name, METHOD_NAME__PRS))) {
+	     !ACPI_COMPARE_NAME(name, METHOD_NAME__PRS) &&
+	     !ACPI_COMPARE_NAME(name, METHOD_NAME__AEI))) {
 		return_ACPI_STATUS(AE_BAD_PARAMETER);
 	}
 
-	/* Get the _CRS or _PRS resource list */
+	/* Get the _CRS/_PRS/_AEI resource list */
 
 	buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
 	status = acpi_rs_get_method_data(device_handle, name, &buffer);
diff --git a/drivers/acpi/acpica/tbfadt.c b/drivers/acpi/acpica/tbfadt.c
index 6f5588e..c5d8704 100644
--- a/drivers/acpi/acpica/tbfadt.c
+++ b/drivers/acpi/acpica/tbfadt.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -63,14 +63,15 @@
 
 typedef struct acpi_fadt_info {
 	char *name;
-	u8 address64;
-	u8 address32;
-	u8 length;
+	u16 address64;
+	u16 address32;
+	u16 length;
 	u8 default_length;
 	u8 type;
 
 } acpi_fadt_info;
 
+#define ACPI_FADT_OPTIONAL          0
 #define ACPI_FADT_REQUIRED          1
 #define ACPI_FADT_SEPARATE_LENGTH   2
 
@@ -87,7 +88,7 @@
 	 ACPI_FADT_OFFSET(pm1b_event_block),
 	 ACPI_FADT_OFFSET(pm1_event_length),
 	 ACPI_PM1_REGISTER_WIDTH * 2,	/* Enable + Status register */
-	 0},
+	 ACPI_FADT_OPTIONAL},
 
 	{"Pm1aControlBlock",
 	 ACPI_FADT_OFFSET(xpm1a_control_block),
@@ -101,7 +102,7 @@
 	 ACPI_FADT_OFFSET(pm1b_control_block),
 	 ACPI_FADT_OFFSET(pm1_control_length),
 	 ACPI_PM1_REGISTER_WIDTH,
-	 0},
+	 ACPI_FADT_OPTIONAL},
 
 	{"Pm2ControlBlock",
 	 ACPI_FADT_OFFSET(xpm2_control_block),
@@ -139,7 +140,7 @@
 
 typedef struct acpi_fadt_pm_info {
 	struct acpi_generic_address *target;
-	u8 source;
+	u16 source;
 	u8 register_num;
 
 } acpi_fadt_pm_info;
@@ -253,8 +254,13 @@
 	acpi_tb_install_table((acpi_physical_address) acpi_gbl_FADT.Xdsdt,
 			      ACPI_SIG_DSDT, ACPI_TABLE_INDEX_DSDT);
 
-	acpi_tb_install_table((acpi_physical_address) acpi_gbl_FADT.Xfacs,
-			      ACPI_SIG_FACS, ACPI_TABLE_INDEX_FACS);
+	/* If Hardware Reduced flag is set, there is no FACS */
+
+	if (!acpi_gbl_reduced_hardware) {
+		acpi_tb_install_table((acpi_physical_address) acpi_gbl_FADT.
+				      Xfacs, ACPI_SIG_FACS,
+				      ACPI_TABLE_INDEX_FACS);
+	}
 }
 
 /*******************************************************************************
@@ -277,12 +283,12 @@
 {
 	/*
 	 * Check if the FADT is larger than the largest table that we expect
-	 * (the ACPI 2.0/3.0 version). If so, truncate the table, and issue
+	 * (the ACPI 5.0 version). If so, truncate the table, and issue
 	 * a warning.
 	 */
 	if (length > sizeof(struct acpi_table_fadt)) {
 		ACPI_WARNING((AE_INFO,
-			      "FADT (revision %u) is longer than ACPI 2.0 version, "
+			      "FADT (revision %u) is longer than ACPI 5.0 version, "
 			      "truncating length %u to %u",
 			      table->revision, length,
 			      (u32)sizeof(struct acpi_table_fadt)));
@@ -297,6 +303,13 @@
 	ACPI_MEMCPY(&acpi_gbl_FADT, table,
 		    ACPI_MIN(length, sizeof(struct acpi_table_fadt)));
 
+	/* Take a copy of the Hardware Reduced flag */
+
+	acpi_gbl_reduced_hardware = FALSE;
+	if (acpi_gbl_FADT.flags & ACPI_FADT_HW_REDUCED) {
+		acpi_gbl_reduced_hardware = TRUE;
+	}
+
 	/* Convert the local copy of the FADT to the common internal format */
 
 	acpi_tb_convert_fadt();
@@ -502,6 +515,12 @@
 		acpi_gbl_FADT.Xdsdt = (u64) acpi_gbl_FADT.dsdt;
 	}
 
+	/* If Hardware Reduced flag is set, we are all done */
+
+	if (acpi_gbl_reduced_hardware) {
+		return;
+	}
+
 	/* Examine all of the 64-bit extended address fields (X fields) */
 
 	for (i = 0; i < ACPI_FADT_INFO_ENTRIES; i++) {
diff --git a/drivers/acpi/acpica/tbfind.c b/drivers/acpi/acpica/tbfind.c
index a55cb2b..4903e36 100644
--- a/drivers/acpi/acpica/tbfind.c
+++ b/drivers/acpi/acpica/tbfind.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/tbinstal.c b/drivers/acpi/acpica/tbinstal.c
index 62365f6..1aecf7b 100644
--- a/drivers/acpi/acpica/tbinstal.c
+++ b/drivers/acpi/acpica/tbinstal.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/tbutils.c b/drivers/acpi/acpica/tbutils.c
index 0f2d395..09ca39e 100644
--- a/drivers/acpi/acpica/tbutils.c
+++ b/drivers/acpi/acpica/tbutils.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -135,6 +135,13 @@
 {
 	acpi_status status;
 
+	/* If Hardware Reduced flag is set, there is no FACS */
+
+	if (acpi_gbl_reduced_hardware) {
+		acpi_gbl_FACS = NULL;
+		return (AE_OK);
+	}
+
 	status = acpi_get_table_by_index(ACPI_TABLE_INDEX_FACS,
 					 ACPI_CAST_INDIRECT_PTR(struct
 								acpi_table_header,
diff --git a/drivers/acpi/acpica/tbxface.c b/drivers/acpi/acpica/tbxface.c
index e7d13f5..abcc641 100644
--- a/drivers/acpi/acpica/tbxface.c
+++ b/drivers/acpi/acpica/tbxface.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/tbxfroot.c b/drivers/acpi/acpica/tbxfroot.c
index 7eb6c6c..4258f64 100644
--- a/drivers/acpi/acpica/tbxfroot.c
+++ b/drivers/acpi/acpica/tbxfroot.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utaddress.c b/drivers/acpi/acpica/utaddress.c
new file mode 100644
index 0000000..67932ae
--- /dev/null
+++ b/drivers/acpi/acpica/utaddress.c
@@ -0,0 +1,294 @@
+/******************************************************************************
+ *
+ * Module Name: utaddress - op_region address range check
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2012, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acnamesp.h"
+
+#define _COMPONENT          ACPI_UTILITIES
+ACPI_MODULE_NAME("utaddress")
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_add_address_range
+ *
+ * PARAMETERS:  space_id            - Address space ID
+ *              Address             - op_region start address
+ *              Length              - op_region length
+ *              region_node         - op_region namespace node
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Add the Operation Region address range to the global list.
+ *              The only supported Space IDs are Memory and I/O. Called when
+ *              the op_region address/length operands are fully evaluated.
+ *
+ * MUTEX:       Locks the namespace
+ *
+ * NOTE: Because this interface is only called when an op_region argument
+ * list is evaluated, there cannot be any duplicate region_nodes.
+ * Duplicate Address/Length values are allowed, however, so that multiple
+ * address conflicts can be detected.
+ *
+ ******************************************************************************/
+acpi_status
+acpi_ut_add_address_range(acpi_adr_space_type space_id,
+			  acpi_physical_address address,
+			  u32 length, struct acpi_namespace_node *region_node)
+{
+	struct acpi_address_range *range_info;
+	acpi_status status;
+
+	ACPI_FUNCTION_TRACE(ut_add_address_range);
+
+	if ((space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY) &&
+	    (space_id != ACPI_ADR_SPACE_SYSTEM_IO)) {
+		return_ACPI_STATUS(AE_OK);
+	}
+
+	/* Allocate/init a new info block, add it to the appropriate list */
+
+	range_info = ACPI_ALLOCATE(sizeof(struct acpi_address_range));
+	if (!range_info) {
+		return_ACPI_STATUS(AE_NO_MEMORY);
+	}
+
+	range_info->start_address = address;
+	range_info->end_address = (address + length - 1);
+	range_info->region_node = region_node;
+
+	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+	if (ACPI_FAILURE(status)) {
+		ACPI_FREE(range_info);
+		return_ACPI_STATUS(status);
+	}
+
+	range_info->next = acpi_gbl_address_range_list[space_id];
+	acpi_gbl_address_range_list[space_id] = range_info;
+
+	ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
+			  "\nAdded [%4.4s] address range: 0x%p-0x%p\n",
+			  acpi_ut_get_node_name(range_info->region_node),
+			  ACPI_CAST_PTR(void, address),
+			  ACPI_CAST_PTR(void, range_info->end_address)));
+
+	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
+	return_ACPI_STATUS(AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_remove_address_range
+ *
+ * PARAMETERS:  space_id            - Address space ID
+ *              region_node         - op_region namespace node
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Remove the Operation Region from the global list. The only
+ *              supported Space IDs are Memory and I/O. Called when an
+ *              op_region is deleted.
+ *
+ * MUTEX:       Assumes the namespace is locked
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_remove_address_range(acpi_adr_space_type space_id,
+			     struct acpi_namespace_node *region_node)
+{
+	struct acpi_address_range *range_info;
+	struct acpi_address_range *prev;
+
+	ACPI_FUNCTION_TRACE(ut_remove_address_range);
+
+	if ((space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY) &&
+	    (space_id != ACPI_ADR_SPACE_SYSTEM_IO)) {
+		return_VOID;
+	}
+
+	/* Get the appropriate list head and check the list */
+
+	range_info = prev = acpi_gbl_address_range_list[space_id];
+	while (range_info) {
+		if (range_info->region_node == region_node) {
+			if (range_info == prev) {	/* Found at list head */
+				acpi_gbl_address_range_list[space_id] =
+				    range_info->next;
+			} else {
+				prev->next = range_info->next;
+			}
+
+			ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
+					  "\nRemoved [%4.4s] address range: 0x%p-0x%p\n",
+					  acpi_ut_get_node_name(range_info->
+								region_node),
+					  ACPI_CAST_PTR(void,
+							range_info->
+							start_address),
+					  ACPI_CAST_PTR(void,
+							range_info->
+							end_address)));
+
+			ACPI_FREE(range_info);
+			return_VOID;
+		}
+
+		prev = range_info;
+		range_info = range_info->next;
+	}
+
+	return_VOID;
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_check_address_range
+ *
+ * PARAMETERS:  space_id            - Address space ID
+ *              Address             - Start address
+ *              Length              - Length of address range
+ *              Warn                - TRUE if warning on overlap desired
+ *
+ * RETURN:      Count of the number of conflicts detected. Zero is always
+ *              returned for Space IDs other than Memory or I/O.
+ *
+ * DESCRIPTION: Check if the input address range overlaps any of the
+ *              ASL operation region address ranges. The only supported
+ *              Space IDs are Memory and I/O.
+ *
+ * MUTEX:       Assumes the namespace is locked.
+ *
+ ******************************************************************************/
+
+u32
+acpi_ut_check_address_range(acpi_adr_space_type space_id,
+			    acpi_physical_address address, u32 length, u8 warn)
+{
+	struct acpi_address_range *range_info;
+	acpi_physical_address end_address;
+	char *pathname;
+	u32 overlap_count = 0;
+
+	ACPI_FUNCTION_TRACE(ut_check_address_range);
+
+	if ((space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY) &&
+	    (space_id != ACPI_ADR_SPACE_SYSTEM_IO)) {
+		return_UINT32(0);
+	}
+
+	range_info = acpi_gbl_address_range_list[space_id];
+	end_address = address + length - 1;
+
+	/* Check entire list for all possible conflicts */
+
+	while (range_info) {
+		/*
+		 * Check if the requested Address/Length overlaps this address_range.
+		 * Four cases to consider:
+		 *
+		 * 1) Input address/length is contained completely in the address range
+		 * 2) Input address/length overlaps range at the range start
+		 * 3) Input address/length overlaps range at the range end
+		 * 4) Input address/length completely encompasses the range
+		 */
+		if ((address <= range_info->end_address) &&
+		    (end_address >= range_info->start_address)) {
+
+			/* Found an address range overlap */
+
+			overlap_count++;
+			if (warn) {	/* Optional warning message */
+				pathname =
+				    acpi_ns_get_external_pathname(range_info->
+								  region_node);
+
+				ACPI_WARNING((AE_INFO,
+					      "0x%p-0x%p %s conflicts with Region %s %d",
+					      ACPI_CAST_PTR(void, address),
+					      ACPI_CAST_PTR(void, end_address),
+					      acpi_ut_get_region_name(space_id),
+					      pathname, overlap_count));
+				ACPI_FREE(pathname);
+			}
+		}
+
+		range_info = range_info->next;
+	}
+
+	return_UINT32(overlap_count);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_delete_address_lists
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Delete all global address range lists (called during
+ *              subsystem shutdown).
+ *
+ ******************************************************************************/
+
+void acpi_ut_delete_address_lists(void)
+{
+	struct acpi_address_range *next;
+	struct acpi_address_range *range_info;
+	int i;
+
+	/* Delete all elements in all address range lists */
+
+	for (i = 0; i < ACPI_ADDRESS_RANGE_MAX; i++) {
+		next = acpi_gbl_address_range_list[i];
+
+		while (next) {
+			range_info = next;
+			next = range_info->next;
+			ACPI_FREE(range_info);
+		}
+
+		acpi_gbl_address_range_list[i] = NULL;
+	}
+}
diff --git a/drivers/acpi/acpica/utalloc.c b/drivers/acpi/acpica/utalloc.c
index 0a69735..9982d2ea 100644
--- a/drivers/acpi/acpica/utalloc.c
+++ b/drivers/acpi/acpica/utalloc.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utcopy.c b/drivers/acpi/acpica/utcopy.c
index aded299..3317c0a 100644
--- a/drivers/acpi/acpica/utcopy.c
+++ b/drivers/acpi/acpica/utcopy.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utdebug.c b/drivers/acpi/acpica/utdebug.c
index a1f8d75..a0998a8 100644
--- a/drivers/acpi/acpica/utdebug.c
+++ b/drivers/acpi/acpica/utdebug.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utdecode.c b/drivers/acpi/acpica/utdecode.c
index 8b087e2..d42ede52 100644
--- a/drivers/acpi/acpica/utdecode.c
+++ b/drivers/acpi/acpica/utdecode.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -171,7 +171,9 @@
 	"SMBus",
 	"SystemCMOS",
 	"PCIBARTarget",
-	"IPMI"
+	"IPMI",
+	"GeneralPurposeIo",
+	"GenericSerialBus"
 };
 
 char *acpi_ut_get_region_name(u8 space_id)
diff --git a/drivers/acpi/acpica/utdelete.c b/drivers/acpi/acpica/utdelete.c
index 31f5a78..2a6c3e1 100644
--- a/drivers/acpi/acpica/utdelete.c
+++ b/drivers/acpi/acpica/utdelete.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -215,11 +215,14 @@
 		ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
 				  "***** Region %p\n", object));
 
-		/* Invalidate the region address/length via the host OS */
-
-		acpi_os_invalidate_address(object->region.space_id,
-					  object->region.address,
-					  (acpi_size) object->region.length);
+		/*
+		 * Update address_range list. However, only permanent regions
+		 * are installed in this list. (Not created within a method)
+		 */
+		if (!(object->region.node->flags & ANOBJ_TEMPORARY)) {
+			acpi_ut_remove_address_range(object->region.space_id,
+						     object->region.node);
+		}
 
 		second_desc = acpi_ns_get_secondary_object(object);
 		if (second_desc) {
diff --git a/drivers/acpi/acpica/uteval.c b/drivers/acpi/acpica/uteval.c
index 18f73c9..479f32b 100644
--- a/drivers/acpi/acpica/uteval.c
+++ b/drivers/acpi/acpica/uteval.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utglobal.c b/drivers/acpi/acpica/utglobal.c
index ffba0a3..4153584 100644
--- a/drivers/acpi/acpica/utglobal.c
+++ b/drivers/acpi/acpica/utglobal.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -264,6 +264,12 @@
 		return_ACPI_STATUS(status);
 	}
 
+	/* Address Range lists */
+
+	for (i = 0; i < ACPI_ADDRESS_RANGE_MAX; i++) {
+		acpi_gbl_address_range_list[i] = NULL;
+	}
+
 	/* Mutex locked flags */
 
 	for (i = 0; i < ACPI_NUM_MUTEX; i++) {
diff --git a/drivers/acpi/acpica/utids.c b/drivers/acpi/acpica/utids.c
index b679ea6..c92eb1d 100644
--- a/drivers/acpi/acpica/utids.c
+++ b/drivers/acpi/acpica/utids.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utinit.c b/drivers/acpi/acpica/utinit.c
index 191b682..8359c0c 100644
--- a/drivers/acpi/acpica/utinit.c
+++ b/drivers/acpi/acpica/utinit.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -92,6 +92,7 @@
 		gpe_xrupt_info = next_gpe_xrupt_info;
 	}
 
+	acpi_ut_delete_address_lists();
 	return_VOID;
 }
 
diff --git a/drivers/acpi/acpica/utlock.c b/drivers/acpi/acpica/utlock.c
index f6bb75c..155fd78 100644
--- a/drivers/acpi/acpica/utlock.c
+++ b/drivers/acpi/acpica/utlock.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utmath.c b/drivers/acpi/acpica/utmath.c
index ce481da..2491a55 100644
--- a/drivers/acpi/acpica/utmath.c
+++ b/drivers/acpi/acpica/utmath.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utmisc.c b/drivers/acpi/acpica/utmisc.c
index c33a852..86f19db 100644
--- a/drivers/acpi/acpica/utmisc.c
+++ b/drivers/acpi/acpica/utmisc.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utmutex.c b/drivers/acpi/acpica/utmutex.c
index 7d797e2..43174df 100644
--- a/drivers/acpi/acpica/utmutex.c
+++ b/drivers/acpi/acpica/utmutex.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -293,14 +293,10 @@
 
 acpi_status acpi_ut_release_mutex(acpi_mutex_handle mutex_id)
 {
-	acpi_thread_id this_thread_id;
-
 	ACPI_FUNCTION_NAME(ut_release_mutex);
 
-	this_thread_id = acpi_os_get_thread_id();
-
 	ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Thread %u releasing Mutex [%s]\n",
-			  (u32)this_thread_id,
+			  (u32)acpi_os_get_thread_id(),
 			  acpi_ut_get_mutex_name(mutex_id)));
 
 	if (mutex_id > ACPI_MAX_MUTEX) {
@@ -329,7 +325,8 @@
 		 * the ACPI subsystem code.
 		 */
 		for (i = mutex_id; i < ACPI_NUM_MUTEX; i++) {
-			if (acpi_gbl_mutex_info[i].thread_id == this_thread_id) {
+			if (acpi_gbl_mutex_info[i].thread_id ==
+			    acpi_os_get_thread_id()) {
 				if (i == mutex_id) {
 					continue;
 				}
diff --git a/drivers/acpi/acpica/utobject.c b/drivers/acpi/acpica/utobject.c
index 188340a..b112744 100644
--- a/drivers/acpi/acpica/utobject.c
+++ b/drivers/acpi/acpica/utobject.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utosi.c b/drivers/acpi/acpica/utosi.c
index 1fb10cb..2360cf7 100644
--- a/drivers/acpi/acpica/utosi.c
+++ b/drivers/acpi/acpica/utosi.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utresrc.c b/drivers/acpi/acpica/utresrc.c
index 6ffd3a8..9d441ea 100644
--- a/drivers/acpi/acpica/utresrc.c
+++ b/drivers/acpi/acpica/utresrc.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -43,7 +43,7 @@
 
 #include <acpi/acpi.h>
 #include "accommon.h"
-#include "amlresrc.h"
+#include "acresrc.h"
 
 #define _COMPONENT          ACPI_UTILITIES
 ACPI_MODULE_NAME("utresrc")
@@ -154,6 +154,138 @@
 	"TypeF"
 };
 
+const char *acpi_gbl_ppc_decode[] = {
+	"PullDefault",
+	"PullUp",
+	"PullDown",
+	"PullNone"
+};
+
+const char *acpi_gbl_ior_decode[] = {
+	"IoRestrictionNone",
+	"IoRestrictionInputOnly",
+	"IoRestrictionOutputOnly",
+	"IoRestrictionNoneAndPreserve"
+};
+
+const char *acpi_gbl_dts_decode[] = {
+	"Width8bit",
+	"Width16bit",
+	"Width32bit",
+	"Width64bit",
+	"Width128bit",
+	"Width256bit",
+};
+
+/* GPIO connection type */
+
+const char *acpi_gbl_ct_decode[] = {
+	"Interrupt",
+	"I/O"
+};
+
+/* Serial bus type */
+
+const char *acpi_gbl_sbt_decode[] = {
+	"/* UNKNOWN serial bus type */",
+	"I2C",
+	"SPI",
+	"UART"
+};
+
+/* I2C serial bus access mode */
+
+const char *acpi_gbl_am_decode[] = {
+	"AddressingMode7Bit",
+	"AddressingMode10Bit"
+};
+
+/* I2C serial bus slave mode */
+
+const char *acpi_gbl_sm_decode[] = {
+	"ControllerInitiated",
+	"DeviceInitiated"
+};
+
+/* SPI serial bus wire mode */
+
+const char *acpi_gbl_wm_decode[] = {
+	"FourWireMode",
+	"ThreeWireMode"
+};
+
+/* SPI serial clock phase */
+
+const char *acpi_gbl_cph_decode[] = {
+	"ClockPhaseFirst",
+	"ClockPhaseSecond"
+};
+
+/* SPI serial bus clock polarity */
+
+const char *acpi_gbl_cpo_decode[] = {
+	"ClockPolarityLow",
+	"ClockPolarityHigh"
+};
+
+/* SPI serial bus device polarity */
+
+const char *acpi_gbl_dp_decode[] = {
+	"PolarityLow",
+	"PolarityHigh"
+};
+
+/* UART serial bus endian */
+
+const char *acpi_gbl_ed_decode[] = {
+	"LittleEndian",
+	"BigEndian"
+};
+
+/* UART serial bus bits per byte */
+
+const char *acpi_gbl_bpb_decode[] = {
+	"DataBitsFive",
+	"DataBitsSix",
+	"DataBitsSeven",
+	"DataBitsEight",
+	"DataBitsNine",
+	"/* UNKNOWN Bits per byte */",
+	"/* UNKNOWN Bits per byte */",
+	"/* UNKNOWN Bits per byte */"
+};
+
+/* UART serial bus stop bits */
+
+const char *acpi_gbl_sb_decode[] = {
+	"StopBitsNone",
+	"StopBitsOne",
+	"StopBitsOnePlusHalf",
+	"StopBitsTwo"
+};
+
+/* UART serial bus flow control */
+
+const char *acpi_gbl_fc_decode[] = {
+	"FlowControlNone",
+	"FlowControlHardware",
+	"FlowControlXON",
+	"/* UNKNOWN flow control keyword */"
+};
+
+/* UART serial bus parity type */
+
+const char *acpi_gbl_pt_decode[] = {
+	"ParityTypeNone",
+	"ParityTypeEven",
+	"ParityTypeOdd",
+	"ParityTypeMark",
+	"ParityTypeSpace",
+	"/* UNKNOWN parity keyword */",
+	"/* UNKNOWN parity keyword */",
+	"/* UNKNOWN parity keyword */"
+};
+
 #endif
 
 /*
@@ -173,7 +305,7 @@
 	ACPI_AML_SIZE_SMALL(struct aml_resource_end_dependent),
 	ACPI_AML_SIZE_SMALL(struct aml_resource_io),
 	ACPI_AML_SIZE_SMALL(struct aml_resource_fixed_io),
-	0,
+	ACPI_AML_SIZE_SMALL(struct aml_resource_fixed_dma),
 	0,
 	0,
 	0,
@@ -193,7 +325,17 @@
 	ACPI_AML_SIZE_LARGE(struct aml_resource_address16),
 	ACPI_AML_SIZE_LARGE(struct aml_resource_extended_irq),
 	ACPI_AML_SIZE_LARGE(struct aml_resource_address64),
-	ACPI_AML_SIZE_LARGE(struct aml_resource_extended_address64)
+	ACPI_AML_SIZE_LARGE(struct aml_resource_extended_address64),
+	ACPI_AML_SIZE_LARGE(struct aml_resource_gpio),
+	0,
+	ACPI_AML_SIZE_LARGE(struct aml_resource_common_serialbus),
+};
+
+const u8 acpi_gbl_resource_aml_serial_bus_sizes[] = {
+	0,
+	ACPI_AML_SIZE_LARGE(struct aml_resource_i2c_serialbus),
+	ACPI_AML_SIZE_LARGE(struct aml_resource_spi_serialbus),
+	ACPI_AML_SIZE_LARGE(struct aml_resource_uart_serialbus),
 };
 
 /*
@@ -209,35 +351,49 @@
 	0,
 	0,
 	0,
-	ACPI_SMALL_VARIABLE_LENGTH,
-	ACPI_FIXED_LENGTH,
-	ACPI_SMALL_VARIABLE_LENGTH,
-	ACPI_FIXED_LENGTH,
-	ACPI_FIXED_LENGTH,
-	ACPI_FIXED_LENGTH,
+	ACPI_SMALL_VARIABLE_LENGTH,	/* 04 IRQ */
+	ACPI_FIXED_LENGTH,	/* 05 DMA */
+	ACPI_SMALL_VARIABLE_LENGTH,	/* 06 start_dependent_functions */
+	ACPI_FIXED_LENGTH,	/* 07 end_dependent_functions */
+	ACPI_FIXED_LENGTH,	/* 08 IO */
+	ACPI_FIXED_LENGTH,	/* 09 fixed_iO */
+	ACPI_FIXED_LENGTH,	/* 0_a fixed_dMA */
 	0,
 	0,
 	0,
-	0,
-	ACPI_VARIABLE_LENGTH,
-	ACPI_FIXED_LENGTH,
+	ACPI_VARIABLE_LENGTH,	/* 0_e vendor_short */
+	ACPI_FIXED_LENGTH,	/* 0_f end_tag */
 
 	/* Large descriptors */
 
 	0,
-	ACPI_FIXED_LENGTH,
-	ACPI_FIXED_LENGTH,
+	ACPI_FIXED_LENGTH,	/* 01 Memory24 */
+	ACPI_FIXED_LENGTH,	/* 02 generic_register */
 	0,
-	ACPI_VARIABLE_LENGTH,
-	ACPI_FIXED_LENGTH,
-	ACPI_FIXED_LENGTH,
-	ACPI_VARIABLE_LENGTH,
-	ACPI_VARIABLE_LENGTH,
-	ACPI_VARIABLE_LENGTH,
-	ACPI_VARIABLE_LENGTH,
-	ACPI_FIXED_LENGTH
+	ACPI_VARIABLE_LENGTH,	/* 04 vendor_long */
+	ACPI_FIXED_LENGTH,	/* 05 Memory32 */
+	ACPI_FIXED_LENGTH,	/* 06 memory32_fixed */
+	ACPI_VARIABLE_LENGTH,	/* 07 Dword* address */
+	ACPI_VARIABLE_LENGTH,	/* 08 Word* address */
+	ACPI_VARIABLE_LENGTH,	/* 09 extended_iRQ */
+	ACPI_VARIABLE_LENGTH,	/* 0_a Qword* address */
+	ACPI_FIXED_LENGTH,	/* 0_b Extended* address */
+	ACPI_VARIABLE_LENGTH,	/* 0_c Gpio* */
+	0,
+	ACPI_VARIABLE_LENGTH	/* 0_e *serial_bus */
 };
 
+/*
+ * For the i_aSL compiler/disassembler, we don't want any error messages
+ * because the disassembler uses the resource validation code to determine
+ * if Buffer objects are actually Resource Templates.
+ */
+#ifdef ACPI_ASL_COMPILER
+#define ACPI_RESOURCE_ERROR(plist)
+#else
+#define ACPI_RESOURCE_ERROR(plist)  ACPI_ERROR(plist)
+#endif
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ut_walk_aml_resources
@@ -265,6 +421,7 @@
 	u8 resource_index;
 	u32 length;
 	u32 offset = 0;
+	u8 end_tag[2] = { 0x79, 0x00 };
 
 	ACPI_FUNCTION_TRACE(ut_walk_aml_resources);
 
@@ -286,6 +443,10 @@
 
 		status = acpi_ut_validate_resource(aml, &resource_index);
 		if (ACPI_FAILURE(status)) {
+			/*
+			 * Exit on failure. Cannot continue because the descriptor length
+			 * may be bogus also.
+			 */
 			return_ACPI_STATUS(status);
 		}
 
@@ -300,7 +461,7 @@
 			    user_function(aml, length, offset, resource_index,
 					  context);
 			if (ACPI_FAILURE(status)) {
-				return (status);
+				return_ACPI_STATUS(status);
 			}
 		}
 
@@ -333,7 +494,19 @@
 
 	/* Did not find an end_tag descriptor */
 
-	return (AE_AML_NO_RESOURCE_END_TAG);
+	if (user_function) {
+
+		/* Insert an end_tag anyway. acpi_rs_get_list_length always leaves room */
+
+		(void)acpi_ut_validate_resource(end_tag, &resource_index);
+		status =
+		    user_function(end_tag, 2, offset, resource_index, context);
+		if (ACPI_FAILURE(status)) {
+			return_ACPI_STATUS(status);
+		}
+	}
+
+	return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
 }
 
 /*******************************************************************************
@@ -354,6 +527,7 @@
 
 acpi_status acpi_ut_validate_resource(void *aml, u8 * return_index)
 {
+	union aml_resource *aml_resource;
 	u8 resource_type;
 	u8 resource_index;
 	acpi_rs_length resource_length;
@@ -375,7 +549,7 @@
 		/* Verify the large resource type (name) against the max */
 
 		if (resource_type > ACPI_RESOURCE_NAME_LARGE_MAX) {
-			return (AE_AML_INVALID_RESOURCE_TYPE);
+			goto invalid_resource;
 		}
 
 		/*
@@ -392,15 +566,17 @@
 		    ((resource_type & ACPI_RESOURCE_NAME_SMALL_MASK) >> 3);
 	}
 
-	/* Check validity of the resource type, zero indicates name is invalid */
-
+	/*
+	 * Check validity of the resource type, via acpi_gbl_resource_types. Zero
+	 * indicates an invalid resource.
+	 */
 	if (!acpi_gbl_resource_types[resource_index]) {
-		return (AE_AML_INVALID_RESOURCE_TYPE);
+		goto invalid_resource;
 	}
 
 	/*
-	 * 2) Validate the resource_length field. This ensures that the length
-	 *    is at least reasonable, and guarantees that it is non-zero.
+	 * Validate the resource_length field. This ensures that the length
+	 * is at least reasonable, and guarantees that it is non-zero.
 	 */
 	resource_length = acpi_ut_get_resource_length(aml);
 	minimum_resource_length = acpi_gbl_resource_aml_sizes[resource_index];
@@ -413,7 +589,7 @@
 		/* Fixed length resource, length must match exactly */
 
 		if (resource_length != minimum_resource_length) {
-			return (AE_AML_BAD_RESOURCE_LENGTH);
+			goto bad_resource_length;
 		}
 		break;
 
@@ -422,7 +598,7 @@
 		/* Variable length resource, length must be at least the minimum */
 
 		if (resource_length < minimum_resource_length) {
-			return (AE_AML_BAD_RESOURCE_LENGTH);
+			goto bad_resource_length;
 		}
 		break;
 
@@ -432,7 +608,7 @@
 
 		if ((resource_length > minimum_resource_length) ||
 		    (resource_length < (minimum_resource_length - 1))) {
-			return (AE_AML_BAD_RESOURCE_LENGTH);
+			goto bad_resource_length;
 		}
 		break;
 
@@ -440,7 +616,23 @@
 
 		/* Shouldn't happen (because of validation earlier), but be sure */
 
-		return (AE_AML_INVALID_RESOURCE_TYPE);
+		goto invalid_resource;
+	}
+
+	aml_resource = ACPI_CAST_PTR(union aml_resource, aml);
+	if (resource_type == ACPI_RESOURCE_NAME_SERIAL_BUS) {
+
+		/* Validate the bus_type field */
+
+		if ((aml_resource->common_serial_bus.type == 0) ||
+		    (aml_resource->common_serial_bus.type >
+		     AML_RESOURCE_MAX_SERIALBUSTYPE)) {
+			ACPI_RESOURCE_ERROR((AE_INFO,
+					     "Invalid/unsupported SerialBus resource descriptor: BusType 0x%2.2X",
+					     aml_resource->common_serial_bus.
+					     type));
+			return (AE_AML_INVALID_RESOURCE_TYPE);
+		}
 	}
 
 	/* Optionally return the resource table index */
@@ -450,6 +642,22 @@
 	}
 
 	return (AE_OK);
+
+      invalid_resource:
+
+	ACPI_RESOURCE_ERROR((AE_INFO,
+			     "Invalid/unsupported resource descriptor: Type 0x%2.2X",
+			     resource_type));
+	return (AE_AML_INVALID_RESOURCE_TYPE);
+
+      bad_resource_length:
+
+	ACPI_RESOURCE_ERROR((AE_INFO,
+			     "Invalid resource descriptor length: Type "
+			     "0x%2.2X, Length 0x%4.4X, MinLength 0x%4.4X",
+			     resource_type, resource_length,
+			     minimum_resource_length));
+	return (AE_AML_BAD_RESOURCE_LENGTH);
 }
 
 /*******************************************************************************
diff --git a/drivers/acpi/acpica/utstate.c b/drivers/acpi/acpica/utstate.c
index 30c21e1..4267477 100644
--- a/drivers/acpi/acpica/utstate.c
+++ b/drivers/acpi/acpica/utstate.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utxface.c b/drivers/acpi/acpica/utxface.c
index 420ebfe..644e8c8 100644
--- a/drivers/acpi/acpica/utxface.c
+++ b/drivers/acpi/acpica/utxface.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -48,6 +48,7 @@
 #include "acnamesp.h"
 #include "acdebug.h"
 #include "actables.h"
+#include "acinterp.h"
 
 #define _COMPONENT          ACPI_UTILITIES
 ACPI_MODULE_NAME("utxface")
@@ -640,4 +641,41 @@
 }
 
 ACPI_EXPORT_SYMBOL(acpi_install_interface_handler)
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_check_address_range
+ *
+ * PARAMETERS:  space_id            - Address space ID
+ *              Address             - Start address
+ *              Length              - Length
+ *              Warn                - TRUE if warning on overlap desired
+ *
+ * RETURN:      Count of the number of conflicts detected.
+ *
+ * DESCRIPTION: Check if the input address range overlaps any of the
+ *              ASL operation region address ranges.
+ *
+ ****************************************************************************/
+u32
+acpi_check_address_range(acpi_adr_space_type space_id,
+			 acpi_physical_address address,
+			 acpi_size length, u8 warn)
+{
+	u32 overlaps;
+	acpi_status status;
+
+	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+	if (ACPI_FAILURE(status)) {
+		return (0);
+	}
+
+	overlaps = acpi_ut_check_address_range(space_id, address,
+					       (u32)length, warn);
+
+	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
+	return (overlaps);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_check_address_range)
 #endif				/* !ACPI_ASL_COMPILER */
diff --git a/drivers/acpi/acpica/utxferror.c b/drivers/acpi/acpica/utxferror.c
index 8d0245e..52b568a 100644
--- a/drivers/acpi/acpica/utxferror.c
+++ b/drivers/acpi/acpica/utxferror.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utxfmutex.c b/drivers/acpi/acpica/utxfmutex.c
new file mode 100644
index 0000000..1427d19
--- /dev/null
+++ b/drivers/acpi/acpica/utxfmutex.c
@@ -0,0 +1,187 @@
+/*******************************************************************************
+ *
+ * Module Name: utxfmutex - external AML mutex access functions
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2012, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acnamesp.h"
+
+#define _COMPONENT          ACPI_UTILITIES
+ACPI_MODULE_NAME("utxfmutex")
+
+/* Local prototypes */
+static acpi_status
+acpi_ut_get_mutex_object(acpi_handle handle,
+			 acpi_string pathname,
+			 union acpi_operand_object **ret_obj);
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_get_mutex_object
+ *
+ * PARAMETERS:  Handle              - Mutex or prefix handle (optional)
+ *              Pathname            - Mutex pathname (optional)
+ *              ret_obj             - Where the mutex object is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Get an AML mutex object. The mutex node is pointed to by
+ *              Handle:Pathname. Either Handle or Pathname can be NULL, but
+ *              not both.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ut_get_mutex_object(acpi_handle handle,
+			 acpi_string pathname,
+			 union acpi_operand_object **ret_obj)
+{
+	struct acpi_namespace_node *mutex_node;
+	union acpi_operand_object *mutex_obj;
+	acpi_status status;
+
+	/* Parameter validation */
+
+	if (!ret_obj || (!handle && !pathname)) {
+		return (AE_BAD_PARAMETER);
+	}
+
+	/* Get a the namespace node for the mutex */
+
+	mutex_node = handle;
+	if (pathname != NULL) {
+		status = acpi_get_handle(handle, pathname,
+					 ACPI_CAST_PTR(acpi_handle,
+						       &mutex_node));
+		if (ACPI_FAILURE(status)) {
+			return (status);
+		}
+	}
+
+	/* Ensure that we actually have a Mutex object */
+
+	if (!mutex_node || (mutex_node->type != ACPI_TYPE_MUTEX)) {
+		return (AE_TYPE);
+	}
+
+	/* Get the low-level mutex object */
+
+	mutex_obj = acpi_ns_get_attached_object(mutex_node);
+	if (!mutex_obj) {
+		return (AE_NULL_OBJECT);
+	}
+
+	*ret_obj = mutex_obj;
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_acquire_mutex
+ *
+ * PARAMETERS:  Handle              - Mutex or prefix handle (optional)
+ *              Pathname            - Mutex pathname (optional)
+ *              Timeout             - Max time to wait for the lock (millisec)
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Acquire an AML mutex. This is a device driver interface to
+ *              AML mutex objects, and allows for transaction locking between
+ *              drivers and AML code. The mutex node is pointed to by
+ *              Handle:Pathname. Either Handle or Pathname can be NULL, but
+ *              not both.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_acquire_mutex(acpi_handle handle, acpi_string pathname, u16 timeout)
+{
+	acpi_status status;
+	union acpi_operand_object *mutex_obj;
+
+	/* Get the low-level mutex associated with Handle:Pathname */
+
+	status = acpi_ut_get_mutex_object(handle, pathname, &mutex_obj);
+	if (ACPI_FAILURE(status)) {
+		return (status);
+	}
+
+	/* Acquire the OS mutex */
+
+	status = acpi_os_acquire_mutex(mutex_obj->mutex.os_mutex, timeout);
+	return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_release_mutex
+ *
+ * PARAMETERS:  Handle              - Mutex or prefix handle (optional)
+ *              Pathname            - Mutex pathname (optional)
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Release an AML mutex. This is a device driver interface to
+ *              AML mutex objects, and allows for transaction locking between
+ *              drivers and AML code. The mutex node is pointed to by
+ *              Handle:Pathname. Either Handle or Pathname can be NULL, but
+ *              not both.
+ *
+ ******************************************************************************/
+
+acpi_status acpi_release_mutex(acpi_handle handle, acpi_string pathname)
+{
+	acpi_status status;
+	union acpi_operand_object *mutex_obj;
+
+	/* Get the low-level mutex associated with Handle:Pathname */
+
+	status = acpi_ut_get_mutex_object(handle, pathname, &mutex_obj);
+	if (ACPI_FAILURE(status)) {
+		return (status);
+	}
+
+	/* Release the OS mutex */
+
+	acpi_os_release_mutex(mutex_obj->mutex.os_mutex);
+	return (AE_OK);
+}
diff --git a/drivers/acpi/apei/apei-base.c b/drivers/acpi/apei/apei-base.c
index 6154036..e45350c 100644
--- a/drivers/acpi/apei/apei-base.c
+++ b/drivers/acpi/apei/apei-base.c
@@ -34,13 +34,13 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/acpi.h>
+#include <linux/acpi_io.h>
 #include <linux/slab.h>
 #include <linux/io.h>
 #include <linux/kref.h>
 #include <linux/rculist.h>
 #include <linux/interrupt.h>
 #include <linux/debugfs.h>
-#include <acpi/atomicio.h>
 
 #include "apei-internal.h"
 
@@ -70,7 +70,7 @@
 {
 	int rc;
 
-	rc = acpi_atomic_read(val, &entry->register_region);
+	rc = apei_read(val, &entry->register_region);
 	if (rc)
 		return rc;
 	*val >>= entry->register_region.bit_offset;
@@ -116,13 +116,13 @@
 	val <<= entry->register_region.bit_offset;
 	if (entry->flags & APEI_EXEC_PRESERVE_REGISTER) {
 		u64 valr = 0;
-		rc = acpi_atomic_read(&valr, &entry->register_region);
+		rc = apei_read(&valr, &entry->register_region);
 		if (rc)
 			return rc;
 		valr &= ~(entry->mask << entry->register_region.bit_offset);
 		val |= valr;
 	}
-	rc = acpi_atomic_write(val, &entry->register_region);
+	rc = apei_write(val, &entry->register_region);
 
 	return rc;
 }
@@ -243,7 +243,7 @@
 	u8 ins = entry->instruction;
 
 	if (ctx->ins_table[ins].flags & APEI_EXEC_INS_ACCESS_REGISTER)
-		return acpi_pre_map_gar(&entry->register_region);
+		return acpi_os_map_generic_address(&entry->register_region);
 
 	return 0;
 }
@@ -276,7 +276,7 @@
 	u8 ins = entry->instruction;
 
 	if (ctx->ins_table[ins].flags & APEI_EXEC_INS_ACCESS_REGISTER)
-		acpi_post_unmap_gar(&entry->register_region);
+		acpi_os_unmap_generic_address(&entry->register_region);
 
 	return 0;
 }
@@ -421,6 +421,17 @@
 	return 0;
 }
 
+int apei_resources_add(struct apei_resources *resources,
+		       unsigned long start, unsigned long size,
+		       bool iomem)
+{
+	if (iomem)
+		return apei_res_add(&resources->iomem, start, size);
+	else
+		return apei_res_add(&resources->ioport, start, size);
+}
+EXPORT_SYMBOL_GPL(apei_resources_add);
+
 /*
  * EINJ has two groups of GARs (EINJ table entry and trigger table
  * entry), so common resources are subtracted from the trigger table
@@ -438,8 +449,19 @@
 }
 EXPORT_SYMBOL_GPL(apei_resources_sub);
 
+static int apei_get_nvs_callback(__u64 start, __u64 size, void *data)
+{
+	struct apei_resources *resources = data;
+	return apei_res_add(&resources->iomem, start, size);
+}
+
+static int apei_get_nvs_resources(struct apei_resources *resources)
+{
+	return acpi_nvs_for_each_region(apei_get_nvs_callback, resources);
+}
+
 /*
- * IO memory/port rersource management mechanism is used to check
+ * IO memory/port resource management mechanism is used to check
  * whether memory/port area used by GARs conflicts with normal memory
  * or IO memory/port of devices.
  */
@@ -448,21 +470,35 @@
 {
 	struct apei_res *res, *res_bak = NULL;
 	struct resource *r;
+	struct apei_resources nvs_resources;
 	int rc;
 
 	rc = apei_resources_sub(resources, &apei_resources_all);
 	if (rc)
 		return rc;
 
+	/*
+	 * Some firmware uses ACPI NVS region, that has been marked as
+	 * busy, so exclude it from APEI resources to avoid false
+	 * conflict.
+	 */
+	apei_resources_init(&nvs_resources);
+	rc = apei_get_nvs_resources(&nvs_resources);
+	if (rc)
+		goto res_fini;
+	rc = apei_resources_sub(resources, &nvs_resources);
+	if (rc)
+		goto res_fini;
+
 	rc = -EINVAL;
 	list_for_each_entry(res, &resources->iomem, list) {
 		r = request_mem_region(res->start, res->end - res->start,
 				       desc);
 		if (!r) {
 			pr_err(APEI_PFX
-		"Can not request iomem region <%016llx-%016llx> for GARs.\n",
+		"Can not request [mem %#010llx-%#010llx] for %s registers\n",
 			       (unsigned long long)res->start,
-			       (unsigned long long)res->end);
+			       (unsigned long long)res->end - 1, desc);
 			res_bak = res;
 			goto err_unmap_iomem;
 		}
@@ -472,9 +508,9 @@
 		r = request_region(res->start, res->end - res->start, desc);
 		if (!r) {
 			pr_err(APEI_PFX
-		"Can not request ioport region <%016llx-%016llx> for GARs.\n",
+		"Can not request [io  %#06llx-%#06llx] for %s registers\n",
 			       (unsigned long long)res->start,
-			       (unsigned long long)res->end);
+			       (unsigned long long)res->end - 1, desc);
 			res_bak = res;
 			goto err_unmap_ioport;
 		}
@@ -500,6 +536,8 @@
 			break;
 		release_mem_region(res->start, res->end - res->start);
 	}
+res_fini:
+	apei_resources_fini(&nvs_resources);
 	return rc;
 }
 EXPORT_SYMBOL_GPL(apei_resources_request);
@@ -553,6 +591,96 @@
 	return 0;
 }
 
+/* read GAR in interrupt (including NMI) or process context */
+int apei_read(u64 *val, struct acpi_generic_address *reg)
+{
+	int rc;
+	u64 address;
+	u32 tmp, width = reg->bit_width;
+	acpi_status status;
+
+	rc = apei_check_gar(reg, &address);
+	if (rc)
+		return rc;
+
+	if (width == 64)
+		width = 32;	/* Break into two 32-bit transfers */
+
+	*val = 0;
+	switch(reg->space_id) {
+	case ACPI_ADR_SPACE_SYSTEM_MEMORY:
+		status = acpi_os_read_memory((acpi_physical_address)
+					     address, &tmp, width);
+		if (ACPI_FAILURE(status))
+			return -EIO;
+		*val = tmp;
+
+		if (reg->bit_width == 64) {
+			/* Read the top 32 bits */
+			status = acpi_os_read_memory((acpi_physical_address)
+						     (address + 4), &tmp, 32);
+			if (ACPI_FAILURE(status))
+				return -EIO;
+			*val |= ((u64)tmp << 32);
+		}
+		break;
+	case ACPI_ADR_SPACE_SYSTEM_IO:
+		status = acpi_os_read_port(address, (u32 *)val, reg->bit_width);
+		if (ACPI_FAILURE(status))
+			return -EIO;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(apei_read);
+
+/* write GAR in interrupt (including NMI) or process context */
+int apei_write(u64 val, struct acpi_generic_address *reg)
+{
+	int rc;
+	u64 address;
+	u32 width = reg->bit_width;
+	acpi_status status;
+
+	rc = apei_check_gar(reg, &address);
+	if (rc)
+		return rc;
+
+	if (width == 64)
+		width = 32;	/* Break into two 32-bit transfers */
+
+	switch (reg->space_id) {
+	case ACPI_ADR_SPACE_SYSTEM_MEMORY:
+		status = acpi_os_write_memory((acpi_physical_address)
+					      address, ACPI_LODWORD(val),
+					      width);
+		if (ACPI_FAILURE(status))
+			return -EIO;
+
+		if (reg->bit_width == 64) {
+			status = acpi_os_write_memory((acpi_physical_address)
+						      (address + 4),
+						      ACPI_HIDWORD(val), 32);
+			if (ACPI_FAILURE(status))
+				return -EIO;
+		}
+		break;
+	case ACPI_ADR_SPACE_SYSTEM_IO:
+		status = acpi_os_write_port(address, val, reg->bit_width);
+		if (ACPI_FAILURE(status))
+			return -EIO;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(apei_write);
+
 static int collect_res_callback(struct apei_exec_context *ctx,
 				struct acpi_whea_header *entry,
 				void *data)
diff --git a/drivers/acpi/apei/apei-internal.h b/drivers/acpi/apei/apei-internal.h
index f57050e..cca240a 100644
--- a/drivers/acpi/apei/apei-internal.h
+++ b/drivers/acpi/apei/apei-internal.h
@@ -68,6 +68,9 @@
 /* IP has been set in instruction function */
 #define APEI_EXEC_SET_IP	1
 
+int apei_read(u64 *val, struct acpi_generic_address *reg);
+int apei_write(u64 val, struct acpi_generic_address *reg);
+
 int __apei_exec_read_register(struct acpi_whea_header *entry, u64 *val);
 int __apei_exec_write_register(struct acpi_whea_header *entry, u64 val);
 int apei_exec_read_register(struct apei_exec_context *ctx,
@@ -95,6 +98,9 @@
 }
 
 void apei_resources_fini(struct apei_resources *resources);
+int apei_resources_add(struct apei_resources *resources,
+		       unsigned long start, unsigned long size,
+		       bool iomem);
 int apei_resources_sub(struct apei_resources *resources1,
 		       struct apei_resources *resources2);
 int apei_resources_request(struct apei_resources *resources,
diff --git a/drivers/acpi/apei/einj.c b/drivers/acpi/apei/einj.c
index 589b96c..5b898d4 100644
--- a/drivers/acpi/apei/einj.c
+++ b/drivers/acpi/apei/einj.c
@@ -43,6 +43,42 @@
 #define FIRMWARE_TIMEOUT	(1 * NSEC_PER_MSEC)
 
 /*
+ * ACPI version 5 provides a SET_ERROR_TYPE_WITH_ADDRESS action.
+ */
+static int acpi5;
+
+struct set_error_type_with_address {
+	u32	type;
+	u32	vendor_extension;
+	u32	flags;
+	u32	apicid;
+	u64	memory_address;
+	u64	memory_address_range;
+	u32	pcie_sbdf;
+};
+enum {
+	SETWA_FLAGS_APICID = 1,
+	SETWA_FLAGS_MEM = 2,
+	SETWA_FLAGS_PCIE_SBDF = 4,
+};
+
+/*
+ * Vendor extensions for platform specific operations
+ */
+struct vendor_error_type_extension {
+	u32	length;
+	u32	pcie_sbdf;
+	u16	vendor_id;
+	u16	device_id;
+	u8	rev_id;
+	u8	reserved[3];
+};
+
+static u32 vendor_flags;
+static struct debugfs_blob_wrapper vendor_blob;
+static char vendor_dev[64];
+
+/*
  * Some BIOSes allow parameters to the SET_ERROR_TYPE entries in the
  * EINJ table through an unpublished extension. Use with caution as
  * most will ignore the parameter and make their own choice of address
@@ -103,7 +139,14 @@
  */
 static DEFINE_MUTEX(einj_mutex);
 
-static struct einj_parameter *einj_param;
+static void *einj_param;
+
+#ifndef readq
+static inline __u64 readq(volatile void __iomem *addr)
+{
+	return ((__u64)readl(addr+4) << 32) + readl(addr);
+}
+#endif
 
 #ifndef writeq
 static inline void writeq(__u64 val, volatile void __iomem *addr)
@@ -158,10 +201,31 @@
 	return 0;
 }
 
-static u64 einj_get_parameter_address(void)
+static void check_vendor_extension(u64 paddr,
+				   struct set_error_type_with_address *v5param)
+{
+	int	offset = readl(&v5param->vendor_extension);
+	struct	vendor_error_type_extension *v;
+	u32	sbdf;
+
+	if (!offset)
+		return;
+	v = ioremap(paddr + offset, sizeof(*v));
+	if (!v)
+		return;
+	sbdf = readl(&v->pcie_sbdf);
+	sprintf(vendor_dev, "%x:%x:%x.%x vendor_id=%x device_id=%x rev_id=%x\n",
+		sbdf >> 24, (sbdf >> 16) & 0xff,
+		(sbdf >> 11) & 0x1f, (sbdf >> 8) & 0x7,
+		 readw(&v->vendor_id), readw(&v->device_id),
+		readb(&v->rev_id));
+	iounmap(v);
+}
+
+static void *einj_get_parameter_address(void)
 {
 	int i;
-	u64 paddr = 0;
+	u64 paddrv4 = 0, paddrv5 = 0;
 	struct acpi_whea_header *entry;
 
 	entry = EINJ_TAB_ENTRY(einj_tab);
@@ -170,12 +234,40 @@
 		    entry->instruction == ACPI_EINJ_WRITE_REGISTER &&
 		    entry->register_region.space_id ==
 		    ACPI_ADR_SPACE_SYSTEM_MEMORY)
-			memcpy(&paddr, &entry->register_region.address,
-			       sizeof(paddr));
+			memcpy(&paddrv4, &entry->register_region.address,
+			       sizeof(paddrv4));
+		if (entry->action == ACPI_EINJ_SET_ERROR_TYPE_WITH_ADDRESS &&
+		    entry->instruction == ACPI_EINJ_WRITE_REGISTER &&
+		    entry->register_region.space_id ==
+		    ACPI_ADR_SPACE_SYSTEM_MEMORY)
+			memcpy(&paddrv5, &entry->register_region.address,
+			       sizeof(paddrv5));
 		entry++;
 	}
+	if (paddrv5) {
+		struct set_error_type_with_address *v5param;
 
-	return paddr;
+		v5param = ioremap(paddrv5, sizeof(*v5param));
+		if (v5param) {
+			acpi5 = 1;
+			check_vendor_extension(paddrv5, v5param);
+			return v5param;
+		}
+	}
+	if (paddrv4) {
+		struct einj_parameter *v4param;
+
+		v4param = ioremap(paddrv4, sizeof(*v4param));
+		if (!v4param)
+			return 0;
+		if (readq(&v4param->reserved1) || readq(&v4param->reserved2)) {
+			iounmap(v4param);
+			return 0;
+		}
+		return v4param;
+	}
+
+	return 0;
 }
 
 /* do sanity check to trigger table */
@@ -194,8 +286,29 @@
 	return 0;
 }
 
+static struct acpi_generic_address *einj_get_trigger_parameter_region(
+	struct acpi_einj_trigger *trigger_tab, u64 param1, u64 param2)
+{
+	int i;
+	struct acpi_whea_header *entry;
+
+	entry = (struct acpi_whea_header *)
+		((char *)trigger_tab + sizeof(struct acpi_einj_trigger));
+	for (i = 0; i < trigger_tab->entry_count; i++) {
+		if (entry->action == ACPI_EINJ_TRIGGER_ERROR &&
+		entry->instruction == ACPI_EINJ_WRITE_REGISTER_VALUE &&
+		entry->register_region.space_id ==
+			ACPI_ADR_SPACE_SYSTEM_MEMORY &&
+		(entry->register_region.address & param2) == (param1 & param2))
+			return &entry->register_region;
+		entry++;
+	}
+
+	return NULL;
+}
 /* Execute instructions in trigger error action table */
-static int __einj_error_trigger(u64 trigger_paddr)
+static int __einj_error_trigger(u64 trigger_paddr, u32 type,
+				u64 param1, u64 param2)
 {
 	struct acpi_einj_trigger *trigger_tab = NULL;
 	struct apei_exec_context trigger_ctx;
@@ -204,14 +317,16 @@
 	struct resource *r;
 	u32 table_size;
 	int rc = -EIO;
+	struct acpi_generic_address *trigger_param_region = NULL;
 
 	r = request_mem_region(trigger_paddr, sizeof(*trigger_tab),
 			       "APEI EINJ Trigger Table");
 	if (!r) {
 		pr_err(EINJ_PFX
-	"Can not request iomem region <%016llx-%016llx> for Trigger table.\n",
+	"Can not request [mem %#010llx-%#010llx] for Trigger table\n",
 		       (unsigned long long)trigger_paddr,
-		       (unsigned long long)trigger_paddr+sizeof(*trigger_tab));
+		       (unsigned long long)trigger_paddr +
+			    sizeof(*trigger_tab) - 1);
 		goto out;
 	}
 	trigger_tab = ioremap_cache(trigger_paddr, sizeof(*trigger_tab));
@@ -232,9 +347,9 @@
 			       "APEI EINJ Trigger Table");
 	if (!r) {
 		pr_err(EINJ_PFX
-"Can not request iomem region <%016llx-%016llx> for Trigger Table Entry.\n",
-		       (unsigned long long)trigger_paddr+sizeof(*trigger_tab),
-		       (unsigned long long)trigger_paddr + table_size);
+"Can not request [mem %#010llx-%#010llx] for Trigger Table Entry\n",
+		       (unsigned long long)trigger_paddr + sizeof(*trigger_tab),
+		       (unsigned long long)trigger_paddr + table_size - 1);
 		goto out_rel_header;
 	}
 	iounmap(trigger_tab);
@@ -255,6 +370,30 @@
 	rc = apei_resources_sub(&trigger_resources, &einj_resources);
 	if (rc)
 		goto out_fini;
+	/*
+	 * Some firmware will access target address specified in
+	 * param1 to trigger the error when injecting memory error.
+	 * This will cause resource conflict with regular memory.  So
+	 * remove it from trigger table resources.
+	 */
+	if (param_extension && (type & 0x0038) && param2) {
+		struct apei_resources addr_resources;
+		apei_resources_init(&addr_resources);
+		trigger_param_region = einj_get_trigger_parameter_region(
+			trigger_tab, param1, param2);
+		if (trigger_param_region) {
+			rc = apei_resources_add(&addr_resources,
+				trigger_param_region->address,
+				trigger_param_region->bit_width/8, true);
+			if (rc)
+				goto out_fini;
+			rc = apei_resources_sub(&trigger_resources,
+					&addr_resources);
+		}
+		apei_resources_fini(&addr_resources);
+		if (rc)
+			goto out_fini;
+	}
 	rc = apei_resources_request(&trigger_resources, "APEI EINJ Trigger");
 	if (rc)
 		goto out_fini;
@@ -293,12 +432,56 @@
 	if (rc)
 		return rc;
 	apei_exec_ctx_set_input(&ctx, type);
-	rc = apei_exec_run(&ctx, ACPI_EINJ_SET_ERROR_TYPE);
-	if (rc)
-		return rc;
-	if (einj_param) {
-		writeq(param1, &einj_param->param1);
-		writeq(param2, &einj_param->param2);
+	if (acpi5) {
+		struct set_error_type_with_address *v5param = einj_param;
+
+		writel(type, &v5param->type);
+		if (type & 0x80000000) {
+			switch (vendor_flags) {
+			case SETWA_FLAGS_APICID:
+				writel(param1, &v5param->apicid);
+				break;
+			case SETWA_FLAGS_MEM:
+				writeq(param1, &v5param->memory_address);
+				writeq(param2, &v5param->memory_address_range);
+				break;
+			case SETWA_FLAGS_PCIE_SBDF:
+				writel(param1, &v5param->pcie_sbdf);
+				break;
+			}
+			writel(vendor_flags, &v5param->flags);
+		} else {
+			switch (type) {
+			case ACPI_EINJ_PROCESSOR_CORRECTABLE:
+			case ACPI_EINJ_PROCESSOR_UNCORRECTABLE:
+			case ACPI_EINJ_PROCESSOR_FATAL:
+				writel(param1, &v5param->apicid);
+				writel(SETWA_FLAGS_APICID, &v5param->flags);
+				break;
+			case ACPI_EINJ_MEMORY_CORRECTABLE:
+			case ACPI_EINJ_MEMORY_UNCORRECTABLE:
+			case ACPI_EINJ_MEMORY_FATAL:
+				writeq(param1, &v5param->memory_address);
+				writeq(param2, &v5param->memory_address_range);
+				writel(SETWA_FLAGS_MEM, &v5param->flags);
+				break;
+			case ACPI_EINJ_PCIX_CORRECTABLE:
+			case ACPI_EINJ_PCIX_UNCORRECTABLE:
+			case ACPI_EINJ_PCIX_FATAL:
+				writel(param1, &v5param->pcie_sbdf);
+				writel(SETWA_FLAGS_PCIE_SBDF, &v5param->flags);
+				break;
+			}
+		}
+	} else {
+		rc = apei_exec_run(&ctx, ACPI_EINJ_SET_ERROR_TYPE);
+		if (rc)
+			return rc;
+		if (einj_param) {
+			struct einj_parameter *v4param = einj_param;
+			writeq(param1, &v4param->param1);
+			writeq(param2, &v4param->param2);
+		}
 	}
 	rc = apei_exec_run(&ctx, ACPI_EINJ_EXECUTE_OPERATION);
 	if (rc)
@@ -324,7 +507,7 @@
 	if (rc)
 		return rc;
 	trigger_paddr = apei_exec_ctx_get_output(&ctx);
-	rc = __einj_error_trigger(trigger_paddr);
+	rc = __einj_error_trigger(trigger_paddr, type, param1, param2);
 	if (rc)
 		return rc;
 	rc = apei_exec_run_optional(&ctx, ACPI_EINJ_END_OPERATION);
@@ -408,15 +591,25 @@
 {
 	int rc;
 	u32 available_error_type = 0;
+	u32 tval, vendor;
+
+	/*
+	 * Vendor defined types have 0x80000000 bit set, and
+	 * are not enumerated by ACPI_EINJ_GET_ERROR_TYPE
+	 */
+	vendor = val & 0x80000000;
+	tval = val & 0x7fffffff;
 
 	/* Only one error type can be specified */
-	if (val & (val - 1))
+	if (tval & (tval - 1))
 		return -EINVAL;
-	rc = einj_get_available_error_type(&available_error_type);
-	if (rc)
-		return rc;
-	if (!(val & available_error_type))
-		return -EINVAL;
+	if (!vendor) {
+		rc = einj_get_available_error_type(&available_error_type);
+		if (rc)
+			return rc;
+		if (!(val & available_error_type))
+			return -EINVAL;
+	}
 	error_type = val;
 
 	return 0;
@@ -455,7 +648,6 @@
 static int __init einj_init(void)
 {
 	int rc;
-	u64 param_paddr;
 	acpi_status status;
 	struct dentry *fentry;
 	struct apei_exec_context ctx;
@@ -465,10 +657,9 @@
 
 	status = acpi_get_table(ACPI_SIG_EINJ, 0,
 				(struct acpi_table_header **)&einj_tab);
-	if (status == AE_NOT_FOUND) {
-		pr_info(EINJ_PFX "Table is not found!\n");
+	if (status == AE_NOT_FOUND)
 		return -ENODEV;
-	} else if (ACPI_FAILURE(status)) {
+	else if (ACPI_FAILURE(status)) {
 		const char *msg = acpi_format_exception(status);
 		pr_err(EINJ_PFX "Failed to get table, %s\n", msg);
 		return -EINVAL;
@@ -509,23 +700,30 @@
 	rc = apei_exec_pre_map_gars(&ctx);
 	if (rc)
 		goto err_release;
-	if (param_extension) {
-		param_paddr = einj_get_parameter_address();
-		if (param_paddr) {
-			einj_param = ioremap(param_paddr, sizeof(*einj_param));
-			rc = -ENOMEM;
-			if (!einj_param)
-				goto err_unmap;
-			fentry = debugfs_create_x64("param1", S_IRUSR | S_IWUSR,
-						    einj_debug_dir, &error_param1);
-			if (!fentry)
-				goto err_unmap;
-			fentry = debugfs_create_x64("param2", S_IRUSR | S_IWUSR,
-						    einj_debug_dir, &error_param2);
-			if (!fentry)
-				goto err_unmap;
-		} else
-			pr_warn(EINJ_PFX "Parameter extension is not supported.\n");
+
+	einj_param = einj_get_parameter_address();
+	if ((param_extension || acpi5) && einj_param) {
+		fentry = debugfs_create_x64("param1", S_IRUSR | S_IWUSR,
+					    einj_debug_dir, &error_param1);
+		if (!fentry)
+			goto err_unmap;
+		fentry = debugfs_create_x64("param2", S_IRUSR | S_IWUSR,
+					    einj_debug_dir, &error_param2);
+		if (!fentry)
+			goto err_unmap;
+	}
+
+	if (vendor_dev[0]) {
+		vendor_blob.data = vendor_dev;
+		vendor_blob.size = strlen(vendor_dev);
+		fentry = debugfs_create_blob("vendor", S_IRUSR,
+					     einj_debug_dir, &vendor_blob);
+		if (!fentry)
+			goto err_unmap;
+		fentry = debugfs_create_x32("vendor_flags", S_IRUSR | S_IWUSR,
+					    einj_debug_dir, &vendor_flags);
+		if (!fentry)
+			goto err_unmap;
 	}
 
 	pr_info(EINJ_PFX "Error INJection is initialized.\n");
diff --git a/drivers/acpi/apei/erst.c b/drivers/acpi/apei/erst.c
index 6a9e3ba..eb9fab5 100644
--- a/drivers/acpi/apei/erst.c
+++ b/drivers/acpi/apei/erst.c
@@ -1127,10 +1127,9 @@
 
 	status = acpi_get_table(ACPI_SIG_ERST, 0,
 				(struct acpi_table_header **)&erst_tab);
-	if (status == AE_NOT_FOUND) {
-		pr_info(ERST_PFX "Table is not found!\n");
+	if (status == AE_NOT_FOUND)
 		goto err;
-	} else if (ACPI_FAILURE(status)) {
+	else if (ACPI_FAILURE(status)) {
 		const char *msg = acpi_format_exception(status);
 		pr_err(ERST_PFX "Failed to get table, %s\n", msg);
 		rc = -EINVAL;
diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index ebaf037..9b3cac0 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -33,6 +33,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/acpi.h>
+#include <linux/acpi_io.h>
 #include <linux/io.h>
 #include <linux/interrupt.h>
 #include <linux/timer.h>
@@ -45,8 +46,9 @@
 #include <linux/irq_work.h>
 #include <linux/llist.h>
 #include <linux/genalloc.h>
+#include <linux/pci.h>
+#include <linux/aer.h>
 #include <acpi/apei.h>
-#include <acpi/atomicio.h>
 #include <acpi/hed.h>
 #include <asm/mce.h>
 #include <asm/tlbflush.h>
@@ -299,7 +301,7 @@
 	if (!ghes)
 		return ERR_PTR(-ENOMEM);
 	ghes->generic = generic;
-	rc = acpi_pre_map_gar(&generic->error_status_address);
+	rc = acpi_os_map_generic_address(&generic->error_status_address);
 	if (rc)
 		goto err_free;
 	error_block_length = generic->error_block_length;
@@ -319,7 +321,7 @@
 	return ghes;
 
 err_unmap:
-	acpi_post_unmap_gar(&generic->error_status_address);
+	acpi_os_unmap_generic_address(&generic->error_status_address);
 err_free:
 	kfree(ghes);
 	return ERR_PTR(rc);
@@ -328,7 +330,7 @@
 static void ghes_fini(struct ghes *ghes)
 {
 	kfree(ghes->estatus);
-	acpi_post_unmap_gar(&ghes->generic->error_status_address);
+	acpi_os_unmap_generic_address(&ghes->generic->error_status_address);
 }
 
 enum {
@@ -399,7 +401,7 @@
 	u32 len;
 	int rc;
 
-	rc = acpi_atomic_read(&buf_paddr, &g->error_status_address);
+	rc = apei_read(&buf_paddr, &g->error_status_address);
 	if (rc) {
 		if (!silent && printk_ratelimit())
 			pr_warning(FW_WARN GHES_PFX
@@ -476,6 +478,27 @@
 			}
 #endif
 		}
+#ifdef CONFIG_ACPI_APEI_PCIEAER
+		else if (!uuid_le_cmp(*(uuid_le *)gdata->section_type,
+				      CPER_SEC_PCIE)) {
+			struct cper_sec_pcie *pcie_err;
+			pcie_err = (struct cper_sec_pcie *)(gdata+1);
+			if (sev == GHES_SEV_RECOVERABLE &&
+			    sec_sev == GHES_SEV_RECOVERABLE &&
+			    pcie_err->validation_bits & CPER_PCIE_VALID_DEVICE_ID &&
+			    pcie_err->validation_bits & CPER_PCIE_VALID_AER_INFO) {
+				unsigned int devfn;
+				int aer_severity;
+				devfn = PCI_DEVFN(pcie_err->device_id.device,
+						  pcie_err->device_id.function);
+				aer_severity = cper_severity_to_aer(sev);
+				aer_recover_queue(pcie_err->device_id.segment,
+						  pcie_err->device_id.bus,
+						  devfn, aer_severity);
+			}
+
+		}
+#endif
 	}
 }
 
@@ -483,16 +506,22 @@
 				 const struct acpi_hest_generic *generic,
 				 const struct acpi_hest_generic_status *estatus)
 {
+	static atomic_t seqno;
+	unsigned int curr_seqno;
+	char pfx_seq[64];
+
 	if (pfx == NULL) {
 		if (ghes_severity(estatus->error_severity) <=
 		    GHES_SEV_CORRECTED)
-			pfx = KERN_WARNING HW_ERR;
+			pfx = KERN_WARNING;
 		else
-			pfx = KERN_ERR HW_ERR;
+			pfx = KERN_ERR;
 	}
+	curr_seqno = atomic_inc_return(&seqno);
+	snprintf(pfx_seq, sizeof(pfx_seq), "%s{%u}" HW_ERR, pfx, curr_seqno);
 	printk("%s""Hardware error from APEI Generic Hardware Error Source: %d\n",
-	       pfx, generic->header.source_id);
-	apei_estatus_print(pfx, estatus);
+	       pfx_seq, generic->header.source_id);
+	apei_estatus_print(pfx_seq, estatus);
 }
 
 static int ghes_print_estatus(const char *pfx,
@@ -711,26 +740,34 @@
 	return ret;
 }
 
-static void ghes_proc_in_irq(struct irq_work *irq_work)
+static struct llist_node *llist_nodes_reverse(struct llist_node *llnode)
 {
-	struct llist_node *llnode, *next, *tail = NULL;
-	struct ghes_estatus_node *estatus_node;
-	struct acpi_hest_generic *generic;
-	struct acpi_hest_generic_status *estatus;
-	u32 len, node_len;
+	struct llist_node *next, *tail = NULL;
 
-	/*
-	 * Because the time order of estatus in list is reversed,
-	 * revert it back to proper order.
-	 */
-	llnode = llist_del_all(&ghes_estatus_llist);
 	while (llnode) {
 		next = llnode->next;
 		llnode->next = tail;
 		tail = llnode;
 		llnode = next;
 	}
-	llnode = tail;
+
+	return tail;
+}
+
+static void ghes_proc_in_irq(struct irq_work *irq_work)
+{
+	struct llist_node *llnode, *next;
+	struct ghes_estatus_node *estatus_node;
+	struct acpi_hest_generic *generic;
+	struct acpi_hest_generic_status *estatus;
+	u32 len, node_len;
+
+	llnode = llist_del_all(&ghes_estatus_llist);
+	/*
+	 * Because the time order of estatus in list is reversed,
+	 * revert it back to proper order.
+	 */
+	llnode = llist_nodes_reverse(llnode);
 	while (llnode) {
 		next = llnode->next;
 		estatus_node = llist_entry(llnode, struct ghes_estatus_node,
@@ -750,6 +787,32 @@
 	}
 }
 
+static void ghes_print_queued_estatus(void)
+{
+	struct llist_node *llnode;
+	struct ghes_estatus_node *estatus_node;
+	struct acpi_hest_generic *generic;
+	struct acpi_hest_generic_status *estatus;
+	u32 len, node_len;
+
+	llnode = llist_del_all(&ghes_estatus_llist);
+	/*
+	 * Because the time order of estatus in list is reversed,
+	 * revert it back to proper order.
+	 */
+	llnode = llist_nodes_reverse(llnode);
+	while (llnode) {
+		estatus_node = llist_entry(llnode, struct ghes_estatus_node,
+					   llnode);
+		estatus = GHES_ESTATUS_FROM_NODE(estatus_node);
+		len = apei_estatus_len(estatus);
+		node_len = GHES_ESTATUS_NODE_LEN(len);
+		generic = estatus_node->generic;
+		ghes_print_estatus(NULL, generic, estatus);
+		llnode = llnode->next;
+	}
+}
+
 static int ghes_notify_nmi(unsigned int cmd, struct pt_regs *regs)
 {
 	struct ghes *ghes, *ghes_global = NULL;
@@ -775,7 +838,8 @@
 
 	if (sev_global >= GHES_SEV_PANIC) {
 		oops_begin();
-		__ghes_print_estatus(KERN_EMERG HW_ERR, ghes_global->generic,
+		ghes_print_queued_estatus();
+		__ghes_print_estatus(KERN_EMERG, ghes_global->generic,
 				     ghes_global->estatus);
 		/* reboot to log the error! */
 		if (panic_timeout == 0)
diff --git a/drivers/acpi/apei/hest.c b/drivers/acpi/apei/hest.c
index ee7fddc..7f00cf3 100644
--- a/drivers/acpi/apei/hest.c
+++ b/drivers/acpi/apei/hest.c
@@ -221,10 +221,9 @@
 
 	status = acpi_get_table(ACPI_SIG_HEST, 0,
 				(struct acpi_table_header **)&hest_tab);
-	if (status == AE_NOT_FOUND) {
-		pr_info(HEST_PFX "Table not found.\n");
+	if (status == AE_NOT_FOUND)
 		goto err;
-	} else if (ACPI_FAILURE(status)) {
+	else if (ACPI_FAILURE(status)) {
 		const char *msg = acpi_format_exception(status);
 		pr_err(HEST_PFX "Failed to get table, %s\n", msg);
 		rc = -EINVAL;
diff --git a/drivers/acpi/atomicio.c b/drivers/acpi/atomicio.c
index cfc0cc1..d4a5b3d 100644
--- a/drivers/acpi/atomicio.c
+++ b/drivers/acpi/atomicio.c
@@ -32,6 +32,8 @@
 #include <linux/rculist.h>
 #include <linux/interrupt.h>
 #include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/highmem.h>
 #include <acpi/atomicio.h>
 
 #define ACPI_PFX "ACPI: "
@@ -97,6 +99,37 @@
 		return NULL;
 }
 
+#ifndef CONFIG_IA64
+#define should_use_kmap(pfn)	page_is_ram(pfn)
+#else
+/* ioremap will take care of cache attributes */
+#define should_use_kmap(pfn)	0
+#endif
+
+static void __iomem *acpi_map(phys_addr_t pg_off, unsigned long pg_sz)
+{
+	unsigned long pfn;
+
+	pfn = pg_off >> PAGE_SHIFT;
+	if (should_use_kmap(pfn)) {
+		if (pg_sz > PAGE_SIZE)
+			return NULL;
+		return (void __iomem __force *)kmap(pfn_to_page(pfn));
+	} else
+		return ioremap(pg_off, pg_sz);
+}
+
+static void acpi_unmap(phys_addr_t pg_off, void __iomem *vaddr)
+{
+	unsigned long pfn;
+
+	pfn = pg_off >> PAGE_SHIFT;
+	if (page_is_ram(pfn))
+		kunmap(pfn_to_page(pfn));
+	else
+		iounmap(vaddr);
+}
+
 /*
  * Used to pre-map the specified IO memory area. First try to find
  * whether the area is already pre-mapped, if it is, increase the
@@ -119,7 +152,7 @@
 
 	pg_off = paddr & PAGE_MASK;
 	pg_sz = ((paddr + size + PAGE_SIZE - 1) & PAGE_MASK) - pg_off;
-	vaddr = ioremap(pg_off, pg_sz);
+	vaddr = acpi_map(pg_off, pg_sz);
 	if (!vaddr)
 		return NULL;
 	map = kmalloc(sizeof(*map), GFP_KERNEL);
@@ -135,7 +168,7 @@
 	vaddr = __acpi_try_ioremap(paddr, size);
 	if (vaddr) {
 		spin_unlock_irqrestore(&acpi_iomaps_lock, flags);
-		iounmap(map->vaddr);
+		acpi_unmap(pg_off, map->vaddr);
 		kfree(map);
 		return vaddr;
 	}
@@ -144,7 +177,7 @@
 
 	return map->vaddr + (paddr - map->paddr);
 err_unmap:
-	iounmap(vaddr);
+	acpi_unmap(pg_off, vaddr);
 	return NULL;
 }
 
@@ -177,7 +210,7 @@
 		return;
 
 	synchronize_rcu();
-	iounmap(map->vaddr);
+	acpi_unmap(map->paddr, map->vaddr);
 	kfree(map);
 }
 
@@ -260,6 +293,21 @@
 }
 EXPORT_SYMBOL_GPL(acpi_post_unmap_gar);
 
+#ifdef readq
+static inline u64 read64(const volatile void __iomem *addr)
+{
+	return readq(addr);
+}
+#else
+static inline u64 read64(const volatile void __iomem *addr)
+{
+	u64 l, h;
+	l = readl(addr);
+	h = readl(addr+4);
+	return l | (h << 32);
+}
+#endif
+
 /*
  * Can be used in atomic (including NMI) or process context. RCU read
  * lock can only be released after the IO memory area accessing.
@@ -280,11 +328,9 @@
 	case 32:
 		*val = readl(addr);
 		break;
-#ifdef readq
 	case 64:
-		*val = readq(addr);
+		*val = read64(addr);
 		break;
-#endif
 	default:
 		return -EINVAL;
 	}
@@ -293,6 +339,19 @@
 	return 0;
 }
 
+#ifdef writeq
+static inline void write64(u64 val, volatile void __iomem *addr)
+{
+	writeq(val, addr);
+}
+#else
+static inline void write64(u64 val, volatile void __iomem *addr)
+{
+	writel(val, addr);
+	writel(val>>32, addr+4);
+}
+#endif
+
 static int acpi_atomic_write_mem(u64 paddr, u64 val, u32 width)
 {
 	void __iomem *addr;
@@ -309,11 +368,9 @@
 	case 32:
 		writel(val, addr);
 		break;
-#ifdef writeq
 	case 64:
-		writeq(val, addr);
+		write64(val, addr);
 		break;
-#endif
 	default:
 		return -EINVAL;
 	}
diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c
index 3b5c318..e56f3be 100644
--- a/drivers/acpi/numa.c
+++ b/drivers/acpi/numa.c
@@ -45,6 +45,8 @@
 static int node_to_pxm_map[MAX_NUMNODES]
 			= { [0 ... MAX_NUMNODES - 1] = PXM_INVAL };
 
+unsigned char acpi_srat_revision __initdata;
+
 int pxm_to_node(int pxm)
 {
 	if (pxm < 0)
@@ -255,9 +257,13 @@
 
 static int __init acpi_parse_srat(struct acpi_table_header *table)
 {
+	struct acpi_table_srat *srat;
 	if (!table)
 		return -EINVAL;
 
+	srat = (struct acpi_table_srat *)table;
+	acpi_srat_revision = srat->header.revision;
+
 	/* Real work done in acpi_table_parse_srat below. */
 
 	return 0;
diff --git a/drivers/acpi/nvs.c b/drivers/acpi/nvs.c
index 096787b..7a2035f 100644
--- a/drivers/acpi/nvs.c
+++ b/drivers/acpi/nvs.c
@@ -15,6 +15,56 @@
 #include <linux/acpi_io.h>
 #include <acpi/acpiosxf.h>
 
+/* ACPI NVS regions, APEI may use it */
+
+struct nvs_region {
+	__u64 phys_start;
+	__u64 size;
+	struct list_head node;
+};
+
+static LIST_HEAD(nvs_region_list);
+
+#ifdef CONFIG_ACPI_SLEEP
+static int suspend_nvs_register(unsigned long start, unsigned long size);
+#else
+static inline int suspend_nvs_register(unsigned long a, unsigned long b)
+{
+	return 0;
+}
+#endif
+
+int acpi_nvs_register(__u64 start, __u64 size)
+{
+	struct nvs_region *region;
+
+	region = kmalloc(sizeof(*region), GFP_KERNEL);
+	if (!region)
+		return -ENOMEM;
+	region->phys_start = start;
+	region->size = size;
+	list_add_tail(&region->node, &nvs_region_list);
+
+	return suspend_nvs_register(start, size);
+}
+
+int acpi_nvs_for_each_region(int (*func)(__u64 start, __u64 size, void *data),
+			     void *data)
+{
+	int rc;
+	struct nvs_region *region;
+
+	list_for_each_entry(region, &nvs_region_list, node) {
+		rc = func(region->phys_start, region->size, data);
+		if (rc)
+			return rc;
+	}
+
+	return 0;
+}
+
+
+#ifdef CONFIG_ACPI_SLEEP
 /*
  * Platforms, like ACPI, may want us to save some memory used by them during
  * suspend and to restore the contents of this memory during the subsequent
@@ -41,7 +91,7 @@
  *	things so that the data from page-aligned addresses in this region will
  *	be copied into separate RAM pages.
  */
-int suspend_nvs_register(unsigned long start, unsigned long size)
+static int suspend_nvs_register(unsigned long start, unsigned long size)
 {
 	struct nvs_page *entry, *next;
 
@@ -159,3 +209,4 @@
 		if (entry->data)
 			memcpy(entry->kaddr, entry->data, entry->size);
 }
+#endif
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index f31c5c5..fcc12d8 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -83,19 +83,6 @@
 struct workqueue_struct *kacpi_hotplug_wq;
 EXPORT_SYMBOL(kacpi_hotplug_wq);
 
-struct acpi_res_list {
-	resource_size_t start;
-	resource_size_t end;
-	acpi_adr_space_type resource_type; /* IO port, System memory, ...*/
-	char name[5];   /* only can have a length of 4 chars, make use of this
-			   one instead of res->name, no need to kalloc then */
-	struct list_head resource_list;
-	int count;
-};
-
-static LIST_HEAD(resource_list_head);
-static DEFINE_SPINLOCK(acpi_res_lock);
-
 /*
  * This list of permanent mappings is for memory that may be accessed from
  * interrupt context, where we can't do the ioremap().
@@ -166,17 +153,21 @@
 	return supported;
 }
 
-static void __init acpi_request_region (struct acpi_generic_address *addr,
+static void __init acpi_request_region (struct acpi_generic_address *gas,
 	unsigned int length, char *desc)
 {
-	if (!addr->address || !length)
+	u64 addr;
+
+	/* Handle possible alignment issues */
+	memcpy(&addr, &gas->address, sizeof(addr));
+	if (!addr || !length)
 		return;
 
 	/* Resources are never freed */
-	if (addr->space_id == ACPI_ADR_SPACE_SYSTEM_IO)
-		request_region(addr->address, length, desc);
-	else if (addr->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY)
-		request_mem_region(addr->address, length, desc);
+	if (gas->space_id == ACPI_ADR_SPACE_SYSTEM_IO)
+		request_region(addr, length, desc);
+	else if (gas->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY)
+		request_mem_region(addr, length, desc);
 }
 
 static int __init acpi_reserve_resources(void)
@@ -427,35 +418,42 @@
 		__acpi_unmap_table(virt, size);
 }
 
-static int acpi_os_map_generic_address(struct acpi_generic_address *addr)
+int acpi_os_map_generic_address(struct acpi_generic_address *gas)
 {
+	u64 addr;
 	void __iomem *virt;
 
-	if (addr->space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY)
+	if (gas->space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY)
 		return 0;
 
-	if (!addr->address || !addr->bit_width)
+	/* Handle possible alignment issues */
+	memcpy(&addr, &gas->address, sizeof(addr));
+	if (!addr || !gas->bit_width)
 		return -EINVAL;
 
-	virt = acpi_os_map_memory(addr->address, addr->bit_width / 8);
+	virt = acpi_os_map_memory(addr, gas->bit_width / 8);
 	if (!virt)
 		return -EIO;
 
 	return 0;
 }
+EXPORT_SYMBOL(acpi_os_map_generic_address);
 
-static void acpi_os_unmap_generic_address(struct acpi_generic_address *addr)
+void acpi_os_unmap_generic_address(struct acpi_generic_address *gas)
 {
+	u64 addr;
 	struct acpi_ioremap *map;
 
-	if (addr->space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY)
+	if (gas->space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY)
 		return;
 
-	if (!addr->address || !addr->bit_width)
+	/* Handle possible alignment issues */
+	memcpy(&addr, &gas->address, sizeof(addr));
+	if (!addr || !gas->bit_width)
 		return;
 
 	mutex_lock(&acpi_ioremap_lock);
-	map = acpi_map_lookup(addr->address, addr->bit_width / 8);
+	map = acpi_map_lookup(addr, gas->bit_width / 8);
 	if (!map) {
 		mutex_unlock(&acpi_ioremap_lock);
 		return;
@@ -465,6 +463,7 @@
 
 	acpi_os_map_cleanup(map);
 }
+EXPORT_SYMBOL(acpi_os_unmap_generic_address);
 
 #ifdef ACPI_FUTURE_USAGE
 acpi_status
@@ -1278,44 +1277,28 @@
  * drivers */
 int acpi_check_resource_conflict(const struct resource *res)
 {
-	struct acpi_res_list *res_list_elem;
-	int ioport = 0, clash = 0;
+	acpi_adr_space_type space_id;
+	acpi_size length;
+	u8 warn = 0;
+	int clash = 0;
 
 	if (acpi_enforce_resources == ENFORCE_RESOURCES_NO)
 		return 0;
 	if (!(res->flags & IORESOURCE_IO) && !(res->flags & IORESOURCE_MEM))
 		return 0;
 
-	ioport = res->flags & IORESOURCE_IO;
+	if (res->flags & IORESOURCE_IO)
+		space_id = ACPI_ADR_SPACE_SYSTEM_IO;
+	else
+		space_id = ACPI_ADR_SPACE_SYSTEM_MEMORY;
 
-	spin_lock(&acpi_res_lock);
-	list_for_each_entry(res_list_elem, &resource_list_head,
-			    resource_list) {
-		if (ioport && (res_list_elem->resource_type
-			       != ACPI_ADR_SPACE_SYSTEM_IO))
-			continue;
-		if (!ioport && (res_list_elem->resource_type
-				!= ACPI_ADR_SPACE_SYSTEM_MEMORY))
-			continue;
-
-		if (res->end < res_list_elem->start
-		    || res_list_elem->end < res->start)
-			continue;
-		clash = 1;
-		break;
-	}
-	spin_unlock(&acpi_res_lock);
+	length = res->end - res->start + 1;
+	if (acpi_enforce_resources != ENFORCE_RESOURCES_NO)
+		warn = 1;
+	clash = acpi_check_address_range(space_id, res->start, length, warn);
 
 	if (clash) {
 		if (acpi_enforce_resources != ENFORCE_RESOURCES_NO) {
-			printk(KERN_WARNING "ACPI: resource %s %pR"
-			       " conflicts with ACPI region %s "
-			       "[%s 0x%zx-0x%zx]\n",
-			       res->name, res, res_list_elem->name,
-			       (res_list_elem->resource_type ==
-				ACPI_ADR_SPACE_SYSTEM_IO) ? "io" : "mem",
-			       (size_t) res_list_elem->start,
-			       (size_t) res_list_elem->end);
 			if (acpi_enforce_resources == ENFORCE_RESOURCES_LAX)
 				printk(KERN_NOTICE "ACPI: This conflict may"
 				       " cause random problems and system"
@@ -1467,155 +1450,6 @@
 	kmem_cache_free(cache, object);
 	return (AE_OK);
 }
-
-static inline int acpi_res_list_add(struct acpi_res_list *res)
-{
-	struct acpi_res_list *res_list_elem;
-
-	list_for_each_entry(res_list_elem, &resource_list_head,
-			    resource_list) {
-
-		if (res->resource_type == res_list_elem->resource_type &&
-		    res->start == res_list_elem->start &&
-		    res->end == res_list_elem->end) {
-
-			/*
-			 * The Region(addr,len) already exist in the list,
-			 * just increase the count
-			 */
-
-			res_list_elem->count++;
-			return 0;
-		}
-	}
-
-	res->count = 1;
-	list_add(&res->resource_list, &resource_list_head);
-	return 1;
-}
-
-static inline void acpi_res_list_del(struct acpi_res_list *res)
-{
-	struct acpi_res_list *res_list_elem;
-
-	list_for_each_entry(res_list_elem, &resource_list_head,
-			    resource_list) {
-
-		if (res->resource_type == res_list_elem->resource_type &&
-		    res->start == res_list_elem->start &&
-		    res->end == res_list_elem->end) {
-
-			/*
-			 * If the res count is decreased to 0,
-			 * remove and free it
-			 */
-
-			if (--res_list_elem->count == 0) {
-				list_del(&res_list_elem->resource_list);
-				kfree(res_list_elem);
-			}
-			return;
-		}
-	}
-}
-
-acpi_status
-acpi_os_invalidate_address(
-    u8                   space_id,
-    acpi_physical_address   address,
-    acpi_size               length)
-{
-	struct acpi_res_list res;
-
-	switch (space_id) {
-	case ACPI_ADR_SPACE_SYSTEM_IO:
-	case ACPI_ADR_SPACE_SYSTEM_MEMORY:
-		/* Only interference checks against SystemIO and SystemMemory
-		   are needed */
-		res.start = address;
-		res.end = address + length - 1;
-		res.resource_type = space_id;
-		spin_lock(&acpi_res_lock);
-		acpi_res_list_del(&res);
-		spin_unlock(&acpi_res_lock);
-		break;
-	case ACPI_ADR_SPACE_PCI_CONFIG:
-	case ACPI_ADR_SPACE_EC:
-	case ACPI_ADR_SPACE_SMBUS:
-	case ACPI_ADR_SPACE_CMOS:
-	case ACPI_ADR_SPACE_PCI_BAR_TARGET:
-	case ACPI_ADR_SPACE_DATA_TABLE:
-	case ACPI_ADR_SPACE_FIXED_HARDWARE:
-		break;
-	}
-	return AE_OK;
-}
-
-/******************************************************************************
- *
- * FUNCTION:    acpi_os_validate_address
- *
- * PARAMETERS:  space_id             - ACPI space ID
- *              address             - Physical address
- *              length              - Address length
- *
- * RETURN:      AE_OK if address/length is valid for the space_id. Otherwise,
- *              should return AE_AML_ILLEGAL_ADDRESS.
- *
- * DESCRIPTION: Validate a system address via the host OS. Used to validate
- *              the addresses accessed by AML operation regions.
- *
- *****************************************************************************/
-
-acpi_status
-acpi_os_validate_address (
-    u8                   space_id,
-    acpi_physical_address   address,
-    acpi_size               length,
-    char *name)
-{
-	struct acpi_res_list *res;
-	int added;
-	if (acpi_enforce_resources == ENFORCE_RESOURCES_NO)
-		return AE_OK;
-
-	switch (space_id) {
-	case ACPI_ADR_SPACE_SYSTEM_IO:
-	case ACPI_ADR_SPACE_SYSTEM_MEMORY:
-		/* Only interference checks against SystemIO and SystemMemory
-		   are needed */
-		res = kzalloc(sizeof(struct acpi_res_list), GFP_KERNEL);
-		if (!res)
-			return AE_OK;
-		/* ACPI names are fixed to 4 bytes, still better use strlcpy */
-		strlcpy(res->name, name, 5);
-		res->start = address;
-		res->end = address + length - 1;
-		res->resource_type = space_id;
-		spin_lock(&acpi_res_lock);
-		added = acpi_res_list_add(res);
-		spin_unlock(&acpi_res_lock);
-		pr_debug("%s %s resource: start: 0x%llx, end: 0x%llx, "
-			 "name: %s\n", added ? "Added" : "Already exist",
-			 (space_id == ACPI_ADR_SPACE_SYSTEM_IO)
-			 ? "SystemIO" : "System Memory",
-			 (unsigned long long)res->start,
-			 (unsigned long long)res->end,
-			 res->name);
-		if (!added)
-			kfree(res);
-		break;
-	case ACPI_ADR_SPACE_PCI_CONFIG:
-	case ACPI_ADR_SPACE_EC:
-	case ACPI_ADR_SPACE_SMBUS:
-	case ACPI_ADR_SPACE_CMOS:
-	case ACPI_ADR_SPACE_PCI_BAR_TARGET:
-	case ACPI_ADR_SPACE_DATA_TABLE:
-	case ACPI_ADR_SPACE_FIXED_HARDWARE:
-		break;
-	}
-	return AE_OK;
-}
 #endif
 
 acpi_status __init acpi_os_initialize(void)
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index 3a0428e..c850de4 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -173,8 +173,30 @@
 	apic_id = map_mat_entry(handle, type, acpi_id);
 	if (apic_id == -1)
 		apic_id = map_madt_entry(type, acpi_id);
-	if (apic_id == -1)
-		return apic_id;
+	if (apic_id == -1) {
+		/*
+		 * On UP processor, there is no _MAT or MADT table.
+		 * So above apic_id is always set to -1.
+		 *
+		 * BIOS may define multiple CPU handles even for UP processor.
+		 * For example,
+		 *
+		 * Scope (_PR)
+                 * {
+		 *     Processor (CPU0, 0x00, 0x00000410, 0x06) {}
+		 *     Processor (CPU1, 0x01, 0x00000410, 0x06) {}
+		 *     Processor (CPU2, 0x02, 0x00000410, 0x06) {}
+		 *     Processor (CPU3, 0x03, 0x00000410, 0x06) {}
+		 * }
+		 *
+		 * Ignores apic_id and always return 0 for CPU0's handle.
+		 * Return -1 for other CPU's handle.
+		 */
+		if (acpi_id == 0)
+			return acpi_id;
+		else
+			return apic_id;
+	}
 
 #ifdef CONFIG_SMP
 	for_each_possible_cpu(i) {
diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
index 20a68ca..0034ede 100644
--- a/drivers/acpi/processor_driver.c
+++ b/drivers/acpi/processor_driver.c
@@ -82,7 +82,7 @@
 static int acpi_processor_add(struct acpi_device *device);
 static int acpi_processor_remove(struct acpi_device *device, int type);
 static void acpi_processor_notify(struct acpi_device *device, u32 event);
-static acpi_status acpi_processor_hotadd_init(acpi_handle handle, int *p_cpu);
+static acpi_status acpi_processor_hotadd_init(struct acpi_processor *pr);
 static int acpi_processor_handle_eject(struct acpi_processor *pr);
 
 
@@ -324,10 +324,8 @@
 	 *  they are physically not present.
 	 */
 	if (pr->id == -1) {
-		if (ACPI_FAILURE
-		    (acpi_processor_hotadd_init(pr->handle, &pr->id))) {
+		if (ACPI_FAILURE(acpi_processor_hotadd_init(pr)))
 			return -ENODEV;
-		}
 	}
 	/*
 	 * On some boxes several processors use the same processor bus id.
@@ -539,6 +537,7 @@
 	thermal_cooling_device_unregister(pr->cdev);
 err_power_exit:
 	acpi_processor_power_exit(pr, device);
+	sysfs_remove_link(&device->dev.kobj, "sysdev");
 err_free_cpumask:
 	free_cpumask_var(pr->throttling.shared_cpu_map);
 
@@ -720,18 +719,19 @@
 	return (AE_OK);
 }
 
-static acpi_status acpi_processor_hotadd_init(acpi_handle handle, int *p_cpu)
+static acpi_status acpi_processor_hotadd_init(struct acpi_processor *pr)
 {
+	acpi_handle handle = pr->handle;
 
 	if (!is_processor_present(handle)) {
 		return AE_ERROR;
 	}
 
-	if (acpi_map_lsapic(handle, p_cpu))
+	if (acpi_map_lsapic(handle, &pr->id))
 		return AE_ERROR;
 
-	if (arch_register_cpu(*p_cpu)) {
-		acpi_unmap_lsapic(*p_cpu);
+	if (arch_register_cpu(pr->id)) {
+		acpi_unmap_lsapic(pr->id);
 		return AE_ERROR;
 	}
 
@@ -748,7 +748,7 @@
 	return (0);
 }
 #else
-static acpi_status acpi_processor_hotadd_init(acpi_handle handle, int *p_cpu)
+static acpi_status acpi_processor_hotadd_init(struct acpi_processor *pr)
 {
 	return AE_ERROR;
 }
@@ -827,8 +827,6 @@
 
 	acpi_bus_unregister_driver(&acpi_processor_driver);
 
-	cpuidle_unregister_driver(&acpi_idle_driver);
-
 	return;
 }
 
diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index 69ac373..fdf27b9 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -1117,6 +1117,13 @@
 			},
 		},
 		{
+			.ident = "Satellite Pro A120",
+			.matches = {
+				DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+				DMI_MATCH(DMI_PRODUCT_NAME, "Satellite Pro A120"),
+			},
+		},
+		{
 			.ident = "Portege M500",
 			.matches = {
 				DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 11c9aea..c06e0ec 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4125,6 +4125,8 @@
 	 * device and controller are SATA.
 	 */
 	{ "PIONEER DVD-RW  DVRTD08",	NULL,	ATA_HORKAGE_NOSETXFER },
+	{ "PIONEER DVD-RW  DVRTD08A",	NULL,	ATA_HORKAGE_NOSETXFER },
+	{ "PIONEER DVD-RW  DVR-215",	NULL,	ATA_HORKAGE_NOSETXFER },
 	{ "PIONEER DVD-RW  DVR-212D",	NULL,	ATA_HORKAGE_NOSETXFER },
 	{ "PIONEER DVD-RW  DVR-216D",	NULL,	ATA_HORKAGE_NOSETXFER },
 
diff --git a/drivers/ata/libata-transport.c b/drivers/ata/libata-transport.c
index 9a7f0ea..74aaee3 100644
--- a/drivers/ata/libata-transport.c
+++ b/drivers/ata/libata-transport.c
@@ -291,6 +291,7 @@
 		goto tport_err;
 	}
 
+	device_enable_async_suspend(dev);
 	pm_runtime_set_active(dev);
 	pm_runtime_enable(dev);
 
diff --git a/drivers/ata/pata_bf54x.c b/drivers/ata/pata_bf54x.c
index d6a4677..1e65842 100644
--- a/drivers/ata/pata_bf54x.c
+++ b/drivers/ata/pata_bf54x.c
@@ -251,6 +251,8 @@
 static const u32 udma_tackmin = 20;
 static const u32 udma_tssmin = 50;
 
+#define BFIN_MAX_SG_SEGMENTS 4
+
 /**
  *
  *	Function:       num_clocks_min
@@ -829,30 +831,74 @@
 
 static void bfin_bmdma_setup(struct ata_queued_cmd *qc)
 {
-	unsigned short config = WDSIZE_16;
+	struct ata_port *ap = qc->ap;
+	struct dma_desc_array *dma_desc_cpu = (struct dma_desc_array *)ap->bmdma_prd;
+	void __iomem *base = (void __iomem *)ap->ioaddr.ctl_addr;
+	unsigned short config = DMAFLOW_ARRAY | NDSIZE_5 | RESTART | WDSIZE_16 | DMAEN;
 	struct scatterlist *sg;
 	unsigned int si;
+	unsigned int channel;
+	unsigned int dir;
+	unsigned int size = 0;
 
 	dev_dbg(qc->ap->dev, "in atapi dma setup\n");
 	/* Program the ATA_CTRL register with dir */
 	if (qc->tf.flags & ATA_TFLAG_WRITE) {
-		/* fill the ATAPI DMA controller */
-		set_dma_config(CH_ATAPI_TX, config);
-		set_dma_x_modify(CH_ATAPI_TX, 2);
-		for_each_sg(qc->sg, sg, qc->n_elem, si) {
-			set_dma_start_addr(CH_ATAPI_TX, sg_dma_address(sg));
-			set_dma_x_count(CH_ATAPI_TX, sg_dma_len(sg) >> 1);
-		}
+		channel = CH_ATAPI_TX;
+		dir = DMA_TO_DEVICE;
 	} else {
+		channel = CH_ATAPI_RX;
+		dir = DMA_FROM_DEVICE;
 		config |= WNR;
-		/* fill the ATAPI DMA controller */
-		set_dma_config(CH_ATAPI_RX, config);
-		set_dma_x_modify(CH_ATAPI_RX, 2);
-		for_each_sg(qc->sg, sg, qc->n_elem, si) {
-			set_dma_start_addr(CH_ATAPI_RX, sg_dma_address(sg));
-			set_dma_x_count(CH_ATAPI_RX, sg_dma_len(sg) >> 1);
-		}
 	}
+
+	dma_map_sg(ap->dev, qc->sg, qc->n_elem, dir);
+
+	/* fill the ATAPI DMA controller */
+	for_each_sg(qc->sg, sg, qc->n_elem, si) {
+		dma_desc_cpu[si].start_addr = sg_dma_address(sg);
+		dma_desc_cpu[si].cfg = config;
+		dma_desc_cpu[si].x_count = sg_dma_len(sg) >> 1;
+		dma_desc_cpu[si].x_modify = 2;
+		size += sg_dma_len(sg);
+	}
+
+	/* Set the last descriptor to stop mode */
+	dma_desc_cpu[qc->n_elem - 1].cfg &= ~(DMAFLOW | NDSIZE);
+
+	flush_dcache_range((unsigned int)dma_desc_cpu,
+		(unsigned int)dma_desc_cpu +
+			qc->n_elem * sizeof(struct dma_desc_array));
+
+	/* Enable ATA DMA operation*/
+	set_dma_curr_desc_addr(channel, (unsigned long *)ap->bmdma_prd_dma);
+	set_dma_x_count(channel, 0);
+	set_dma_x_modify(channel, 0);
+	set_dma_config(channel, config);
+
+	SSYNC();
+
+	/* Send ATA DMA command */
+	bfin_exec_command(ap, &qc->tf);
+
+	if (qc->tf.flags & ATA_TFLAG_WRITE) {
+		/* set ATA DMA write direction */
+		ATAPI_SET_CONTROL(base, (ATAPI_GET_CONTROL(base)
+			| XFER_DIR));
+	} else {
+		/* set ATA DMA read direction */
+		ATAPI_SET_CONTROL(base, (ATAPI_GET_CONTROL(base)
+			& ~XFER_DIR));
+	}
+
+	/* Reset all transfer count */
+	ATAPI_SET_CONTROL(base, ATAPI_GET_CONTROL(base) | TFRCNT_RST);
+
+	/* Set ATAPI state machine contorl in terminate sequence */
+	ATAPI_SET_CONTROL(base, ATAPI_GET_CONTROL(base) | END_ON_TERM);
+
+	/* Set transfer length to the total size of sg buffers */
+	ATAPI_SET_XFER_LEN(base, size >> 1);
 }
 
 /**
@@ -866,59 +912,13 @@
 {
 	struct ata_port *ap = qc->ap;
 	void __iomem *base = (void __iomem *)ap->ioaddr.ctl_addr;
-	struct scatterlist *sg;
-	unsigned int si;
 
 	dev_dbg(qc->ap->dev, "in atapi dma start\n");
+
 	if (!(ap->udma_mask || ap->mwdma_mask))
 		return;
 
-	/* start ATAPI DMA controller*/
-	if (qc->tf.flags & ATA_TFLAG_WRITE) {
-		/*
-		 * On blackfin arch, uncacheable memory is not
-		 * allocated with flag GFP_DMA. DMA buffer from
-		 * common kenel code should be flushed if WB
-		 * data cache is enabled. Otherwise, this loop
-		 * is an empty loop and optimized out.
-		 */
-		for_each_sg(qc->sg, sg, qc->n_elem, si) {
-			flush_dcache_range(sg_dma_address(sg),
-				sg_dma_address(sg) + sg_dma_len(sg));
-		}
-		enable_dma(CH_ATAPI_TX);
-		dev_dbg(qc->ap->dev, "enable udma write\n");
-
-		/* Send ATA DMA write command */
-		bfin_exec_command(ap, &qc->tf);
-
-		/* set ATA DMA write direction */
-		ATAPI_SET_CONTROL(base, (ATAPI_GET_CONTROL(base)
-			| XFER_DIR));
-	} else {
-		enable_dma(CH_ATAPI_RX);
-		dev_dbg(qc->ap->dev, "enable udma read\n");
-
-		/* Send ATA DMA read command */
-		bfin_exec_command(ap, &qc->tf);
-
-		/* set ATA DMA read direction */
-		ATAPI_SET_CONTROL(base, (ATAPI_GET_CONTROL(base)
-			& ~XFER_DIR));
-	}
-
-	/* Reset all transfer count */
-	ATAPI_SET_CONTROL(base, ATAPI_GET_CONTROL(base) | TFRCNT_RST);
-
-	/* Set ATAPI state machine contorl in terminate sequence */
-	ATAPI_SET_CONTROL(base, ATAPI_GET_CONTROL(base) | END_ON_TERM);
-
-	/* Set transfer length to buffer len */
-	for_each_sg(qc->sg, sg, qc->n_elem, si) {
-		ATAPI_SET_XFER_LEN(base, (sg_dma_len(sg) >> 1));
-	}
-
-	/* Enable ATA DMA operation*/
+	/* start ATAPI transfer*/
 	if (ap->udma_mask)
 		ATAPI_SET_CONTROL(base, ATAPI_GET_CONTROL(base)
 			| ULTRA_START);
@@ -935,34 +935,23 @@
 static void bfin_bmdma_stop(struct ata_queued_cmd *qc)
 {
 	struct ata_port *ap = qc->ap;
-	struct scatterlist *sg;
-	unsigned int si;
+	unsigned int dir;
 
 	dev_dbg(qc->ap->dev, "in atapi dma stop\n");
+
 	if (!(ap->udma_mask || ap->mwdma_mask))
 		return;
 
 	/* stop ATAPI DMA controller*/
-	if (qc->tf.flags & ATA_TFLAG_WRITE)
+	if (qc->tf.flags & ATA_TFLAG_WRITE) {
+		dir = DMA_TO_DEVICE;
 		disable_dma(CH_ATAPI_TX);
-	else {
+	} else {
+		dir = DMA_FROM_DEVICE;
 		disable_dma(CH_ATAPI_RX);
-		if (ap->hsm_task_state & HSM_ST_LAST) {
-			/*
-			 * On blackfin arch, uncacheable memory is not
-			 * allocated with flag GFP_DMA. DMA buffer from
-			 * common kenel code should be invalidated if
-			 * data cache is enabled. Otherwise, this loop
-			 * is an empty loop and optimized out.
-			 */
-			for_each_sg(qc->sg, sg, qc->n_elem, si) {
-				invalidate_dcache_range(
-					sg_dma_address(sg),
-					sg_dma_address(sg)
-					+ sg_dma_len(sg));
-			}
-		}
 	}
+
+	dma_unmap_sg(ap->dev, qc->sg, qc->n_elem, dir);
 }
 
 /**
@@ -1260,6 +1249,11 @@
 {
 	dev_dbg(ap->dev, "in atapi port stop\n");
 	if (ap->udma_mask != 0 || ap->mwdma_mask != 0) {
+		dma_free_coherent(ap->dev,
+			BFIN_MAX_SG_SEGMENTS * sizeof(struct dma_desc_array),
+			ap->bmdma_prd,
+			ap->bmdma_prd_dma);
+
 		free_dma(CH_ATAPI_RX);
 		free_dma(CH_ATAPI_TX);
 	}
@@ -1271,14 +1265,29 @@
 	if (!(ap->udma_mask || ap->mwdma_mask))
 		return 0;
 
+	ap->bmdma_prd = dma_alloc_coherent(ap->dev,
+				BFIN_MAX_SG_SEGMENTS * sizeof(struct dma_desc_array),
+				&ap->bmdma_prd_dma,
+				GFP_KERNEL);
+
+	if (ap->bmdma_prd == NULL) {
+		dev_info(ap->dev, "Unable to allocate DMA descriptor array.\n");
+		goto out;
+	}
+
 	if (request_dma(CH_ATAPI_RX, "BFIN ATAPI RX DMA") >= 0) {
 		if (request_dma(CH_ATAPI_TX,
 			"BFIN ATAPI TX DMA") >= 0)
 			return 0;
 
 		free_dma(CH_ATAPI_RX);
+		dma_free_coherent(ap->dev,
+			BFIN_MAX_SG_SEGMENTS * sizeof(struct dma_desc_array),
+			ap->bmdma_prd,
+			ap->bmdma_prd_dma);
 	}
 
+out:
 	ap->udma_mask = 0;
 	ap->mwdma_mask = 0;
 	dev_err(ap->dev, "Unable to request ATAPI DMA!"
@@ -1400,7 +1409,7 @@
 
 static struct scsi_host_template bfin_sht = {
 	ATA_BASE_SHT(DRV_NAME),
-	.sg_tablesize		= SG_NONE,
+	.sg_tablesize		= BFIN_MAX_SG_SEGMENTS,
 	.dma_boundary		= ATA_DMA_BOUNDARY,
 };
 
diff --git a/drivers/ata/sata_fsl.c b/drivers/ata/sata_fsl.c
index 5a2c95b..0120b0d 100644
--- a/drivers/ata/sata_fsl.c
+++ b/drivers/ata/sata_fsl.c
@@ -140,6 +140,7 @@
 	 */
 	HCONTROL_ONLINE_PHY_RST = (1 << 31),
 	HCONTROL_FORCE_OFFLINE = (1 << 30),
+	HCONTROL_LEGACY = (1 << 28),
 	HCONTROL_PARITY_PROT_MOD = (1 << 14),
 	HCONTROL_DPATH_PARITY = (1 << 12),
 	HCONTROL_SNOOP_ENABLE = (1 << 10),
@@ -1223,6 +1224,10 @@
 	 * part of the port_start() callback
 	 */
 
+	/* sata controller to operate in enterprise mode */
+	temp = ioread32(hcr_base + HCONTROL);
+	iowrite32(temp & ~HCONTROL_LEGACY, hcr_base + HCONTROL);
+
 	/* ack. any pending IRQs for this controller/port */
 	temp = ioread32(hcr_base + HSTATUS);
 	if (temp & 0x3F)
@@ -1421,6 +1426,12 @@
 	/* Recovery the CHBA register in host controller cmd register set */
 	iowrite32(pp->cmdslot_paddr & 0xffffffff, hcr_base + CHBA);
 
+	iowrite32((ioread32(hcr_base + HCONTROL)
+				| HCONTROL_ONLINE_PHY_RST
+				| HCONTROL_SNOOP_ENABLE
+				| HCONTROL_PMP_ATTACHED),
+			hcr_base + HCONTROL);
+
 	ata_host_resume(host);
 	return 0;
 }
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 92e6a90..978bbf7 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -1429,6 +1429,8 @@
 	return 0;
 }
 
+#ifdef CONFIG_PM_SLEEP
+
 /**
  * pm_genpd_default_suspend - Default "device suspend" for PM domians.
  * @dev: Device to handle.
@@ -1517,6 +1519,19 @@
 	return cb ? cb(dev) : pm_generic_thaw(dev);
 }
 
+#else /* !CONFIG_PM_SLEEP */
+
+#define pm_genpd_default_suspend	NULL
+#define pm_genpd_default_suspend_late	NULL
+#define pm_genpd_default_resume_early	NULL
+#define pm_genpd_default_resume		NULL
+#define pm_genpd_default_freeze		NULL
+#define pm_genpd_default_freeze_late	NULL
+#define pm_genpd_default_thaw_early	NULL
+#define pm_genpd_default_thaw		NULL
+
+#endif /* !CONFIG_PM_SLEEP */
+
 /**
  * pm_genpd_init - Initialize a generic I/O PM domain object.
  * @genpd: PM domain object to initialize.
diff --git a/drivers/base/power/domain_governor.c b/drivers/base/power/domain_governor.c
index 51527ee..66a265b 100644
--- a/drivers/base/power/domain_governor.c
+++ b/drivers/base/power/domain_governor.c
@@ -12,6 +12,8 @@
 #include <linux/pm_qos.h>
 #include <linux/hrtimer.h>
 
+#ifdef CONFIG_PM_RUNTIME
+
 /**
  * default_stop_ok - Default PM domain governor routine for stopping devices.
  * @dev: Device to check.
@@ -137,16 +139,28 @@
 	return true;
 }
 
-struct dev_power_governor simple_qos_governor = {
-	.stop_ok = default_stop_ok,
-	.power_down_ok = default_power_down_ok,
-};
-
 static bool always_on_power_down_ok(struct dev_pm_domain *domain)
 {
 	return false;
 }
 
+#else /* !CONFIG_PM_RUNTIME */
+
+bool default_stop_ok(struct device *dev)
+{
+	return false;
+}
+
+#define default_power_down_ok	NULL
+#define always_on_power_down_ok	NULL
+
+#endif /* !CONFIG_PM_RUNTIME */
+
+struct dev_power_governor simple_qos_governor = {
+	.stop_ok = default_stop_ok,
+	.power_down_ok = default_power_down_ok,
+};
+
 /**
  * pm_genpd_gov_always_on - A governor implementing an always-on policy
  */
diff --git a/drivers/bcma/bcma_private.h b/drivers/bcma/bcma_private.h
index fda56bd..0def898 100644
--- a/drivers/bcma/bcma_private.h
+++ b/drivers/bcma/bcma_private.h
@@ -19,6 +19,7 @@
 				   struct bcma_device *core_cc,
 				   struct bcma_device *core_mips);
 #ifdef CONFIG_PM
+int bcma_bus_suspend(struct bcma_bus *bus);
 int bcma_bus_resume(struct bcma_bus *bus);
 #endif
 
diff --git a/drivers/bcma/host_pci.c b/drivers/bcma/host_pci.c
index 443b83a..f59244e 100644
--- a/drivers/bcma/host_pci.c
+++ b/drivers/bcma/host_pci.c
@@ -235,38 +235,32 @@
 }
 
 #ifdef CONFIG_PM
-static int bcma_host_pci_suspend(struct pci_dev *dev, pm_message_t state)
+static int bcma_host_pci_suspend(struct device *dev)
 {
-	/* Host specific */
-	pci_save_state(dev);
-	pci_disable_device(dev);
-	pci_set_power_state(dev, pci_choose_state(dev, state));
+	struct pci_dev *pdev = to_pci_dev(dev);
+	struct bcma_bus *bus = pci_get_drvdata(pdev);
 
-	return 0;
+	bus->mapped_core = NULL;
+
+	return bcma_bus_suspend(bus);
 }
 
-static int bcma_host_pci_resume(struct pci_dev *dev)
+static int bcma_host_pci_resume(struct device *dev)
 {
-	struct bcma_bus *bus = pci_get_drvdata(dev);
-	int err;
+	struct pci_dev *pdev = to_pci_dev(dev);
+	struct bcma_bus *bus = pci_get_drvdata(pdev);
 
-	/* Host specific */
-	pci_set_power_state(dev, 0);
-	err = pci_enable_device(dev);
-	if (err)
-		return err;
-	pci_restore_state(dev);
-
-	/* Bus specific */
-	err = bcma_bus_resume(bus);
-	if (err)
-		return err;
-
-	return 0;
+	return bcma_bus_resume(bus);
 }
+
+static SIMPLE_DEV_PM_OPS(bcma_pm_ops, bcma_host_pci_suspend,
+			 bcma_host_pci_resume);
+#define BCMA_PM_OPS	(&bcma_pm_ops)
+
 #else /* CONFIG_PM */
-# define bcma_host_pci_suspend	NULL
-# define bcma_host_pci_resume	NULL
+
+#define BCMA_PM_OPS     NULL
+
 #endif /* CONFIG_PM */
 
 static DEFINE_PCI_DEVICE_TABLE(bcma_pci_bridge_tbl) = {
@@ -284,8 +278,7 @@
 	.id_table = bcma_pci_bridge_tbl,
 	.probe = bcma_host_pci_probe,
 	.remove = bcma_host_pci_remove,
-	.suspend = bcma_host_pci_suspend,
-	.resume = bcma_host_pci_resume,
+	.driver.pm = BCMA_PM_OPS,
 };
 
 int __init bcma_host_pci_init(void)
diff --git a/drivers/bcma/main.c b/drivers/bcma/main.c
index 10f92b3..febbc0a 100644
--- a/drivers/bcma/main.c
+++ b/drivers/bcma/main.c
@@ -241,6 +241,21 @@
 }
 
 #ifdef CONFIG_PM
+int bcma_bus_suspend(struct bcma_bus *bus)
+{
+	struct bcma_device *core;
+
+	list_for_each_entry(core, &bus->cores, list) {
+		struct device_driver *drv = core->dev.driver;
+		if (drv) {
+			struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
+			if (adrv->suspend)
+				adrv->suspend(core);
+		}
+	}
+	return 0;
+}
+
 int bcma_bus_resume(struct bcma_bus *bus)
 {
 	struct bcma_device *core;
@@ -252,6 +267,15 @@
 		bcma_core_chipcommon_init(&bus->drv_cc);
 	}
 
+	list_for_each_entry(core, &bus->cores, list) {
+		struct device_driver *drv = core->dev.driver;
+		if (drv) {
+			struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
+			if (adrv->resume)
+				adrv->resume(core);
+		}
+	}
+
 	return 0;
 }
 #endif
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index a30aa10..4e4c8a4 100644
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -317,6 +317,17 @@
 
 	  If unsure, say N.
 
+config BLK_DEV_NVME
+	tristate "NVM Express block device"
+	depends on PCI
+	---help---
+	  The NVM Express driver is for solid state drives directly
+	  connected to the PCI or PCI Express bus.  If you know you
+	  don't have one of these, it is safe to answer N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called nvme.
+
 config BLK_DEV_OSD
 	tristate "OSD object-as-blkdev support"
 	depends on SCSI_OSD_ULD
diff --git a/drivers/block/Makefile b/drivers/block/Makefile
index ad7b74a..5b79505 100644
--- a/drivers/block/Makefile
+++ b/drivers/block/Makefile
@@ -23,6 +23,7 @@
 obj-$(CONFIG_CDROM_PKTCDVD)	+= pktcdvd.o
 obj-$(CONFIG_MG_DISK)		+= mg_disk.o
 obj-$(CONFIG_SUNVDC)		+= sunvdc.o
+obj-$(CONFIG_BLK_DEV_NVME)	+= nvme.o
 obj-$(CONFIG_BLK_DEV_OSD)	+= osdblk.o
 
 obj-$(CONFIG_BLK_DEV_UMEM)	+= umem.o
diff --git a/drivers/block/nvme.c b/drivers/block/nvme.c
new file mode 100644
index 0000000..c1dc4d8
--- /dev/null
+++ b/drivers/block/nvme.c
@@ -0,0 +1,1739 @@
+/*
+ * NVM Express device driver
+ * Copyright (c) 2011, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <linux/nvme.h>
+#include <linux/bio.h>
+#include <linux/bitops.h>
+#include <linux/blkdev.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/genhd.h>
+#include <linux/idr.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/kdev_t.h>
+#include <linux/kthread.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/pci.h>
+#include <linux/poison.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/version.h>
+
+#define NVME_Q_DEPTH 1024
+#define SQ_SIZE(depth)		(depth * sizeof(struct nvme_command))
+#define CQ_SIZE(depth)		(depth * sizeof(struct nvme_completion))
+#define NVME_MINORS 64
+#define NVME_IO_TIMEOUT	(5 * HZ)
+#define ADMIN_TIMEOUT	(60 * HZ)
+
+static int nvme_major;
+module_param(nvme_major, int, 0);
+
+static int use_threaded_interrupts;
+module_param(use_threaded_interrupts, int, 0);
+
+static DEFINE_SPINLOCK(dev_list_lock);
+static LIST_HEAD(dev_list);
+static struct task_struct *nvme_thread;
+
+/*
+ * Represents an NVM Express device.  Each nvme_dev is a PCI function.
+ */
+struct nvme_dev {
+	struct list_head node;
+	struct nvme_queue **queues;
+	u32 __iomem *dbs;
+	struct pci_dev *pci_dev;
+	struct dma_pool *prp_page_pool;
+	struct dma_pool *prp_small_pool;
+	int instance;
+	int queue_count;
+	int db_stride;
+	u32 ctrl_config;
+	struct msix_entry *entry;
+	struct nvme_bar __iomem *bar;
+	struct list_head namespaces;
+	char serial[20];
+	char model[40];
+	char firmware_rev[8];
+};
+
+/*
+ * An NVM Express namespace is equivalent to a SCSI LUN
+ */
+struct nvme_ns {
+	struct list_head list;
+
+	struct nvme_dev *dev;
+	struct request_queue *queue;
+	struct gendisk *disk;
+
+	int ns_id;
+	int lba_shift;
+};
+
+/*
+ * An NVM Express queue.  Each device has at least two (one for admin
+ * commands and one for I/O commands).
+ */
+struct nvme_queue {
+	struct device *q_dmadev;
+	struct nvme_dev *dev;
+	spinlock_t q_lock;
+	struct nvme_command *sq_cmds;
+	volatile struct nvme_completion *cqes;
+	dma_addr_t sq_dma_addr;
+	dma_addr_t cq_dma_addr;
+	wait_queue_head_t sq_full;
+	wait_queue_t sq_cong_wait;
+	struct bio_list sq_cong;
+	u32 __iomem *q_db;
+	u16 q_depth;
+	u16 cq_vector;
+	u16 sq_head;
+	u16 sq_tail;
+	u16 cq_head;
+	u16 cq_phase;
+	unsigned long cmdid_data[];
+};
+
+/*
+ * Check we didin't inadvertently grow the command struct
+ */
+static inline void _nvme_check_size(void)
+{
+	BUILD_BUG_ON(sizeof(struct nvme_rw_command) != 64);
+	BUILD_BUG_ON(sizeof(struct nvme_create_cq) != 64);
+	BUILD_BUG_ON(sizeof(struct nvme_create_sq) != 64);
+	BUILD_BUG_ON(sizeof(struct nvme_delete_queue) != 64);
+	BUILD_BUG_ON(sizeof(struct nvme_features) != 64);
+	BUILD_BUG_ON(sizeof(struct nvme_command) != 64);
+	BUILD_BUG_ON(sizeof(struct nvme_id_ctrl) != 4096);
+	BUILD_BUG_ON(sizeof(struct nvme_id_ns) != 4096);
+	BUILD_BUG_ON(sizeof(struct nvme_lba_range_type) != 64);
+}
+
+typedef void (*nvme_completion_fn)(struct nvme_dev *, void *,
+						struct nvme_completion *);
+
+struct nvme_cmd_info {
+	nvme_completion_fn fn;
+	void *ctx;
+	unsigned long timeout;
+};
+
+static struct nvme_cmd_info *nvme_cmd_info(struct nvme_queue *nvmeq)
+{
+	return (void *)&nvmeq->cmdid_data[BITS_TO_LONGS(nvmeq->q_depth)];
+}
+
+/**
+ * alloc_cmdid() - Allocate a Command ID
+ * @nvmeq: The queue that will be used for this command
+ * @ctx: A pointer that will be passed to the handler
+ * @handler: The function to call on completion
+ *
+ * Allocate a Command ID for a queue.  The data passed in will
+ * be passed to the completion handler.  This is implemented by using
+ * the bottom two bits of the ctx pointer to store the handler ID.
+ * Passing in a pointer that's not 4-byte aligned will cause a BUG.
+ * We can change this if it becomes a problem.
+ *
+ * May be called with local interrupts disabled and the q_lock held,
+ * or with interrupts enabled and no locks held.
+ */
+static int alloc_cmdid(struct nvme_queue *nvmeq, void *ctx,
+				nvme_completion_fn handler, unsigned timeout)
+{
+	int depth = nvmeq->q_depth - 1;
+	struct nvme_cmd_info *info = nvme_cmd_info(nvmeq);
+	int cmdid;
+
+	do {
+		cmdid = find_first_zero_bit(nvmeq->cmdid_data, depth);
+		if (cmdid >= depth)
+			return -EBUSY;
+	} while (test_and_set_bit(cmdid, nvmeq->cmdid_data));
+
+	info[cmdid].fn = handler;
+	info[cmdid].ctx = ctx;
+	info[cmdid].timeout = jiffies + timeout;
+	return cmdid;
+}
+
+static int alloc_cmdid_killable(struct nvme_queue *nvmeq, void *ctx,
+				nvme_completion_fn handler, unsigned timeout)
+{
+	int cmdid;
+	wait_event_killable(nvmeq->sq_full,
+		(cmdid = alloc_cmdid(nvmeq, ctx, handler, timeout)) >= 0);
+	return (cmdid < 0) ? -EINTR : cmdid;
+}
+
+/* Special values must be less than 0x1000 */
+#define CMD_CTX_BASE		((void *)POISON_POINTER_DELTA)
+#define CMD_CTX_CANCELLED	(0x30C + CMD_CTX_BASE)
+#define CMD_CTX_COMPLETED	(0x310 + CMD_CTX_BASE)
+#define CMD_CTX_INVALID		(0x314 + CMD_CTX_BASE)
+#define CMD_CTX_FLUSH		(0x318 + CMD_CTX_BASE)
+
+static void special_completion(struct nvme_dev *dev, void *ctx,
+						struct nvme_completion *cqe)
+{
+	if (ctx == CMD_CTX_CANCELLED)
+		return;
+	if (ctx == CMD_CTX_FLUSH)
+		return;
+	if (ctx == CMD_CTX_COMPLETED) {
+		dev_warn(&dev->pci_dev->dev,
+				"completed id %d twice on queue %d\n",
+				cqe->command_id, le16_to_cpup(&cqe->sq_id));
+		return;
+	}
+	if (ctx == CMD_CTX_INVALID) {
+		dev_warn(&dev->pci_dev->dev,
+				"invalid id %d completed on queue %d\n",
+				cqe->command_id, le16_to_cpup(&cqe->sq_id));
+		return;
+	}
+
+	dev_warn(&dev->pci_dev->dev, "Unknown special completion %p\n", ctx);
+}
+
+/*
+ * Called with local interrupts disabled and the q_lock held.  May not sleep.
+ */
+static void *free_cmdid(struct nvme_queue *nvmeq, int cmdid,
+						nvme_completion_fn *fn)
+{
+	void *ctx;
+	struct nvme_cmd_info *info = nvme_cmd_info(nvmeq);
+
+	if (cmdid >= nvmeq->q_depth) {
+		*fn = special_completion;
+		return CMD_CTX_INVALID;
+	}
+	*fn = info[cmdid].fn;
+	ctx = info[cmdid].ctx;
+	info[cmdid].fn = special_completion;
+	info[cmdid].ctx = CMD_CTX_COMPLETED;
+	clear_bit(cmdid, nvmeq->cmdid_data);
+	wake_up(&nvmeq->sq_full);
+	return ctx;
+}
+
+static void *cancel_cmdid(struct nvme_queue *nvmeq, int cmdid,
+						nvme_completion_fn *fn)
+{
+	void *ctx;
+	struct nvme_cmd_info *info = nvme_cmd_info(nvmeq);
+	if (fn)
+		*fn = info[cmdid].fn;
+	ctx = info[cmdid].ctx;
+	info[cmdid].fn = special_completion;
+	info[cmdid].ctx = CMD_CTX_CANCELLED;
+	return ctx;
+}
+
+static struct nvme_queue *get_nvmeq(struct nvme_dev *dev)
+{
+	return dev->queues[get_cpu() + 1];
+}
+
+static void put_nvmeq(struct nvme_queue *nvmeq)
+{
+	put_cpu();
+}
+
+/**
+ * nvme_submit_cmd() - Copy a command into a queue and ring the doorbell
+ * @nvmeq: The queue to use
+ * @cmd: The command to send
+ *
+ * Safe to use from interrupt context
+ */
+static int nvme_submit_cmd(struct nvme_queue *nvmeq, struct nvme_command *cmd)
+{
+	unsigned long flags;
+	u16 tail;
+	spin_lock_irqsave(&nvmeq->q_lock, flags);
+	tail = nvmeq->sq_tail;
+	memcpy(&nvmeq->sq_cmds[tail], cmd, sizeof(*cmd));
+	if (++tail == nvmeq->q_depth)
+		tail = 0;
+	writel(tail, nvmeq->q_db);
+	nvmeq->sq_tail = tail;
+	spin_unlock_irqrestore(&nvmeq->q_lock, flags);
+
+	return 0;
+}
+
+/*
+ * The nvme_iod describes the data in an I/O, including the list of PRP
+ * entries.  You can't see it in this data structure because C doesn't let
+ * me express that.  Use nvme_alloc_iod to ensure there's enough space
+ * allocated to store the PRP list.
+ */
+struct nvme_iod {
+	void *private;		/* For the use of the submitter of the I/O */
+	int npages;		/* In the PRP list. 0 means small pool in use */
+	int offset;		/* Of PRP list */
+	int nents;		/* Used in scatterlist */
+	int length;		/* Of data, in bytes */
+	dma_addr_t first_dma;
+	struct scatterlist sg[0];
+};
+
+static __le64 **iod_list(struct nvme_iod *iod)
+{
+	return ((void *)iod) + iod->offset;
+}
+
+/*
+ * Will slightly overestimate the number of pages needed.  This is OK
+ * as it only leads to a small amount of wasted memory for the lifetime of
+ * the I/O.
+ */
+static int nvme_npages(unsigned size)
+{
+	unsigned nprps = DIV_ROUND_UP(size + PAGE_SIZE, PAGE_SIZE);
+	return DIV_ROUND_UP(8 * nprps, PAGE_SIZE - 8);
+}
+
+static struct nvme_iod *
+nvme_alloc_iod(unsigned nseg, unsigned nbytes, gfp_t gfp)
+{
+	struct nvme_iod *iod = kmalloc(sizeof(struct nvme_iod) +
+				sizeof(__le64 *) * nvme_npages(nbytes) +
+				sizeof(struct scatterlist) * nseg, gfp);
+
+	if (iod) {
+		iod->offset = offsetof(struct nvme_iod, sg[nseg]);
+		iod->npages = -1;
+		iod->length = nbytes;
+	}
+
+	return iod;
+}
+
+static void nvme_free_iod(struct nvme_dev *dev, struct nvme_iod *iod)
+{
+	const int last_prp = PAGE_SIZE / 8 - 1;
+	int i;
+	__le64 **list = iod_list(iod);
+	dma_addr_t prp_dma = iod->first_dma;
+
+	if (iod->npages == 0)
+		dma_pool_free(dev->prp_small_pool, list[0], prp_dma);
+	for (i = 0; i < iod->npages; i++) {
+		__le64 *prp_list = list[i];
+		dma_addr_t next_prp_dma = le64_to_cpu(prp_list[last_prp]);
+		dma_pool_free(dev->prp_page_pool, prp_list, prp_dma);
+		prp_dma = next_prp_dma;
+	}
+	kfree(iod);
+}
+
+static void requeue_bio(struct nvme_dev *dev, struct bio *bio)
+{
+	struct nvme_queue *nvmeq = get_nvmeq(dev);
+	if (bio_list_empty(&nvmeq->sq_cong))
+		add_wait_queue(&nvmeq->sq_full, &nvmeq->sq_cong_wait);
+	bio_list_add(&nvmeq->sq_cong, bio);
+	put_nvmeq(nvmeq);
+	wake_up_process(nvme_thread);
+}
+
+static void bio_completion(struct nvme_dev *dev, void *ctx,
+						struct nvme_completion *cqe)
+{
+	struct nvme_iod *iod = ctx;
+	struct bio *bio = iod->private;
+	u16 status = le16_to_cpup(&cqe->status) >> 1;
+
+	dma_unmap_sg(&dev->pci_dev->dev, iod->sg, iod->nents,
+			bio_data_dir(bio) ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+	nvme_free_iod(dev, iod);
+	if (status) {
+		bio_endio(bio, -EIO);
+	} else if (bio->bi_vcnt > bio->bi_idx) {
+		requeue_bio(dev, bio);
+	} else {
+		bio_endio(bio, 0);
+	}
+}
+
+/* length is in bytes.  gfp flags indicates whether we may sleep. */
+static int nvme_setup_prps(struct nvme_dev *dev,
+			struct nvme_common_command *cmd, struct nvme_iod *iod,
+			int total_len, gfp_t gfp)
+{
+	struct dma_pool *pool;
+	int length = total_len;
+	struct scatterlist *sg = iod->sg;
+	int dma_len = sg_dma_len(sg);
+	u64 dma_addr = sg_dma_address(sg);
+	int offset = offset_in_page(dma_addr);
+	__le64 *prp_list;
+	__le64 **list = iod_list(iod);
+	dma_addr_t prp_dma;
+	int nprps, i;
+
+	cmd->prp1 = cpu_to_le64(dma_addr);
+	length -= (PAGE_SIZE - offset);
+	if (length <= 0)
+		return total_len;
+
+	dma_len -= (PAGE_SIZE - offset);
+	if (dma_len) {
+		dma_addr += (PAGE_SIZE - offset);
+	} else {
+		sg = sg_next(sg);
+		dma_addr = sg_dma_address(sg);
+		dma_len = sg_dma_len(sg);
+	}
+
+	if (length <= PAGE_SIZE) {
+		cmd->prp2 = cpu_to_le64(dma_addr);
+		return total_len;
+	}
+
+	nprps = DIV_ROUND_UP(length, PAGE_SIZE);
+	if (nprps <= (256 / 8)) {
+		pool = dev->prp_small_pool;
+		iod->npages = 0;
+	} else {
+		pool = dev->prp_page_pool;
+		iod->npages = 1;
+	}
+
+	prp_list = dma_pool_alloc(pool, gfp, &prp_dma);
+	if (!prp_list) {
+		cmd->prp2 = cpu_to_le64(dma_addr);
+		iod->npages = -1;
+		return (total_len - length) + PAGE_SIZE;
+	}
+	list[0] = prp_list;
+	iod->first_dma = prp_dma;
+	cmd->prp2 = cpu_to_le64(prp_dma);
+	i = 0;
+	for (;;) {
+		if (i == PAGE_SIZE / 8) {
+			__le64 *old_prp_list = prp_list;
+			prp_list = dma_pool_alloc(pool, gfp, &prp_dma);
+			if (!prp_list)
+				return total_len - length;
+			list[iod->npages++] = prp_list;
+			prp_list[0] = old_prp_list[i - 1];
+			old_prp_list[i - 1] = cpu_to_le64(prp_dma);
+			i = 1;
+		}
+		prp_list[i++] = cpu_to_le64(dma_addr);
+		dma_len -= PAGE_SIZE;
+		dma_addr += PAGE_SIZE;
+		length -= PAGE_SIZE;
+		if (length <= 0)
+			break;
+		if (dma_len > 0)
+			continue;
+		BUG_ON(dma_len < 0);
+		sg = sg_next(sg);
+		dma_addr = sg_dma_address(sg);
+		dma_len = sg_dma_len(sg);
+	}
+
+	return total_len;
+}
+
+/* NVMe scatterlists require no holes in the virtual address */
+#define BIOVEC_NOT_VIRT_MERGEABLE(vec1, vec2)	((vec2)->bv_offset || \
+			(((vec1)->bv_offset + (vec1)->bv_len) % PAGE_SIZE))
+
+static int nvme_map_bio(struct device *dev, struct nvme_iod *iod,
+		struct bio *bio, enum dma_data_direction dma_dir, int psegs)
+{
+	struct bio_vec *bvec, *bvprv = NULL;
+	struct scatterlist *sg = NULL;
+	int i, old_idx, length = 0, nsegs = 0;
+
+	sg_init_table(iod->sg, psegs);
+	old_idx = bio->bi_idx;
+	bio_for_each_segment(bvec, bio, i) {
+		if (bvprv && BIOVEC_PHYS_MERGEABLE(bvprv, bvec)) {
+			sg->length += bvec->bv_len;
+		} else {
+			if (bvprv && BIOVEC_NOT_VIRT_MERGEABLE(bvprv, bvec))
+				break;
+			sg = sg ? sg + 1 : iod->sg;
+			sg_set_page(sg, bvec->bv_page, bvec->bv_len,
+							bvec->bv_offset);
+			nsegs++;
+		}
+		length += bvec->bv_len;
+		bvprv = bvec;
+	}
+	bio->bi_idx = i;
+	iod->nents = nsegs;
+	sg_mark_end(sg);
+	if (dma_map_sg(dev, iod->sg, iod->nents, dma_dir) == 0) {
+		bio->bi_idx = old_idx;
+		return -ENOMEM;
+	}
+	return length;
+}
+
+static int nvme_submit_flush(struct nvme_queue *nvmeq, struct nvme_ns *ns,
+								int cmdid)
+{
+	struct nvme_command *cmnd = &nvmeq->sq_cmds[nvmeq->sq_tail];
+
+	memset(cmnd, 0, sizeof(*cmnd));
+	cmnd->common.opcode = nvme_cmd_flush;
+	cmnd->common.command_id = cmdid;
+	cmnd->common.nsid = cpu_to_le32(ns->ns_id);
+
+	if (++nvmeq->sq_tail == nvmeq->q_depth)
+		nvmeq->sq_tail = 0;
+	writel(nvmeq->sq_tail, nvmeq->q_db);
+
+	return 0;
+}
+
+static int nvme_submit_flush_data(struct nvme_queue *nvmeq, struct nvme_ns *ns)
+{
+	int cmdid = alloc_cmdid(nvmeq, (void *)CMD_CTX_FLUSH,
+					special_completion, NVME_IO_TIMEOUT);
+	if (unlikely(cmdid < 0))
+		return cmdid;
+
+	return nvme_submit_flush(nvmeq, ns, cmdid);
+}
+
+/*
+ * Called with local interrupts disabled and the q_lock held.  May not sleep.
+ */
+static int nvme_submit_bio_queue(struct nvme_queue *nvmeq, struct nvme_ns *ns,
+								struct bio *bio)
+{
+	struct nvme_command *cmnd;
+	struct nvme_iod *iod;
+	enum dma_data_direction dma_dir;
+	int cmdid, length, result = -ENOMEM;
+	u16 control;
+	u32 dsmgmt;
+	int psegs = bio_phys_segments(ns->queue, bio);
+
+	if ((bio->bi_rw & REQ_FLUSH) && psegs) {
+		result = nvme_submit_flush_data(nvmeq, ns);
+		if (result)
+			return result;
+	}
+
+	iod = nvme_alloc_iod(psegs, bio->bi_size, GFP_ATOMIC);
+	if (!iod)
+		goto nomem;
+	iod->private = bio;
+
+	result = -EBUSY;
+	cmdid = alloc_cmdid(nvmeq, iod, bio_completion, NVME_IO_TIMEOUT);
+	if (unlikely(cmdid < 0))
+		goto free_iod;
+
+	if ((bio->bi_rw & REQ_FLUSH) && !psegs)
+		return nvme_submit_flush(nvmeq, ns, cmdid);
+
+	control = 0;
+	if (bio->bi_rw & REQ_FUA)
+		control |= NVME_RW_FUA;
+	if (bio->bi_rw & (REQ_FAILFAST_DEV | REQ_RAHEAD))
+		control |= NVME_RW_LR;
+
+	dsmgmt = 0;
+	if (bio->bi_rw & REQ_RAHEAD)
+		dsmgmt |= NVME_RW_DSM_FREQ_PREFETCH;
+
+	cmnd = &nvmeq->sq_cmds[nvmeq->sq_tail];
+
+	memset(cmnd, 0, sizeof(*cmnd));
+	if (bio_data_dir(bio)) {
+		cmnd->rw.opcode = nvme_cmd_write;
+		dma_dir = DMA_TO_DEVICE;
+	} else {
+		cmnd->rw.opcode = nvme_cmd_read;
+		dma_dir = DMA_FROM_DEVICE;
+	}
+
+	result = nvme_map_bio(nvmeq->q_dmadev, iod, bio, dma_dir, psegs);
+	if (result < 0)
+		goto free_iod;
+	length = result;
+
+	cmnd->rw.command_id = cmdid;
+	cmnd->rw.nsid = cpu_to_le32(ns->ns_id);
+	length = nvme_setup_prps(nvmeq->dev, &cmnd->common, iod, length,
+								GFP_ATOMIC);
+	cmnd->rw.slba = cpu_to_le64(bio->bi_sector >> (ns->lba_shift - 9));
+	cmnd->rw.length = cpu_to_le16((length >> ns->lba_shift) - 1);
+	cmnd->rw.control = cpu_to_le16(control);
+	cmnd->rw.dsmgmt = cpu_to_le32(dsmgmt);
+
+	bio->bi_sector += length >> 9;
+
+	if (++nvmeq->sq_tail == nvmeq->q_depth)
+		nvmeq->sq_tail = 0;
+	writel(nvmeq->sq_tail, nvmeq->q_db);
+
+	return 0;
+
+ free_iod:
+	nvme_free_iod(nvmeq->dev, iod);
+ nomem:
+	return result;
+}
+
+static void nvme_make_request(struct request_queue *q, struct bio *bio)
+{
+	struct nvme_ns *ns = q->queuedata;
+	struct nvme_queue *nvmeq = get_nvmeq(ns->dev);
+	int result = -EBUSY;
+
+	spin_lock_irq(&nvmeq->q_lock);
+	if (bio_list_empty(&nvmeq->sq_cong))
+		result = nvme_submit_bio_queue(nvmeq, ns, bio);
+	if (unlikely(result)) {
+		if (bio_list_empty(&nvmeq->sq_cong))
+			add_wait_queue(&nvmeq->sq_full, &nvmeq->sq_cong_wait);
+		bio_list_add(&nvmeq->sq_cong, bio);
+	}
+
+	spin_unlock_irq(&nvmeq->q_lock);
+	put_nvmeq(nvmeq);
+}
+
+static irqreturn_t nvme_process_cq(struct nvme_queue *nvmeq)
+{
+	u16 head, phase;
+
+	head = nvmeq->cq_head;
+	phase = nvmeq->cq_phase;
+
+	for (;;) {
+		void *ctx;
+		nvme_completion_fn fn;
+		struct nvme_completion cqe = nvmeq->cqes[head];
+		if ((le16_to_cpu(cqe.status) & 1) != phase)
+			break;
+		nvmeq->sq_head = le16_to_cpu(cqe.sq_head);
+		if (++head == nvmeq->q_depth) {
+			head = 0;
+			phase = !phase;
+		}
+
+		ctx = free_cmdid(nvmeq, cqe.command_id, &fn);
+		fn(nvmeq->dev, ctx, &cqe);
+	}
+
+	/* If the controller ignores the cq head doorbell and continuously
+	 * writes to the queue, it is theoretically possible to wrap around
+	 * the queue twice and mistakenly return IRQ_NONE.  Linux only
+	 * requires that 0.1% of your interrupts are handled, so this isn't
+	 * a big problem.
+	 */
+	if (head == nvmeq->cq_head && phase == nvmeq->cq_phase)
+		return IRQ_NONE;
+
+	writel(head, nvmeq->q_db + (1 << nvmeq->dev->db_stride));
+	nvmeq->cq_head = head;
+	nvmeq->cq_phase = phase;
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t nvme_irq(int irq, void *data)
+{
+	irqreturn_t result;
+	struct nvme_queue *nvmeq = data;
+	spin_lock(&nvmeq->q_lock);
+	result = nvme_process_cq(nvmeq);
+	spin_unlock(&nvmeq->q_lock);
+	return result;
+}
+
+static irqreturn_t nvme_irq_check(int irq, void *data)
+{
+	struct nvme_queue *nvmeq = data;
+	struct nvme_completion cqe = nvmeq->cqes[nvmeq->cq_head];
+	if ((le16_to_cpu(cqe.status) & 1) != nvmeq->cq_phase)
+		return IRQ_NONE;
+	return IRQ_WAKE_THREAD;
+}
+
+static void nvme_abort_command(struct nvme_queue *nvmeq, int cmdid)
+{
+	spin_lock_irq(&nvmeq->q_lock);
+	cancel_cmdid(nvmeq, cmdid, NULL);
+	spin_unlock_irq(&nvmeq->q_lock);
+}
+
+struct sync_cmd_info {
+	struct task_struct *task;
+	u32 result;
+	int status;
+};
+
+static void sync_completion(struct nvme_dev *dev, void *ctx,
+						struct nvme_completion *cqe)
+{
+	struct sync_cmd_info *cmdinfo = ctx;
+	cmdinfo->result = le32_to_cpup(&cqe->result);
+	cmdinfo->status = le16_to_cpup(&cqe->status) >> 1;
+	wake_up_process(cmdinfo->task);
+}
+
+/*
+ * Returns 0 on success.  If the result is negative, it's a Linux error code;
+ * if the result is positive, it's an NVM Express status code
+ */
+static int nvme_submit_sync_cmd(struct nvme_queue *nvmeq,
+			struct nvme_command *cmd, u32 *result, unsigned timeout)
+{
+	int cmdid;
+	struct sync_cmd_info cmdinfo;
+
+	cmdinfo.task = current;
+	cmdinfo.status = -EINTR;
+
+	cmdid = alloc_cmdid_killable(nvmeq, &cmdinfo, sync_completion,
+								timeout);
+	if (cmdid < 0)
+		return cmdid;
+	cmd->common.command_id = cmdid;
+
+	set_current_state(TASK_KILLABLE);
+	nvme_submit_cmd(nvmeq, cmd);
+	schedule();
+
+	if (cmdinfo.status == -EINTR) {
+		nvme_abort_command(nvmeq, cmdid);
+		return -EINTR;
+	}
+
+	if (result)
+		*result = cmdinfo.result;
+
+	return cmdinfo.status;
+}
+
+static int nvme_submit_admin_cmd(struct nvme_dev *dev, struct nvme_command *cmd,
+								u32 *result)
+{
+	return nvme_submit_sync_cmd(dev->queues[0], cmd, result, ADMIN_TIMEOUT);
+}
+
+static int adapter_delete_queue(struct nvme_dev *dev, u8 opcode, u16 id)
+{
+	int status;
+	struct nvme_command c;
+
+	memset(&c, 0, sizeof(c));
+	c.delete_queue.opcode = opcode;
+	c.delete_queue.qid = cpu_to_le16(id);
+
+	status = nvme_submit_admin_cmd(dev, &c, NULL);
+	if (status)
+		return -EIO;
+	return 0;
+}
+
+static int adapter_alloc_cq(struct nvme_dev *dev, u16 qid,
+						struct nvme_queue *nvmeq)
+{
+	int status;
+	struct nvme_command c;
+	int flags = NVME_QUEUE_PHYS_CONTIG | NVME_CQ_IRQ_ENABLED;
+
+	memset(&c, 0, sizeof(c));
+	c.create_cq.opcode = nvme_admin_create_cq;
+	c.create_cq.prp1 = cpu_to_le64(nvmeq->cq_dma_addr);
+	c.create_cq.cqid = cpu_to_le16(qid);
+	c.create_cq.qsize = cpu_to_le16(nvmeq->q_depth - 1);
+	c.create_cq.cq_flags = cpu_to_le16(flags);
+	c.create_cq.irq_vector = cpu_to_le16(nvmeq->cq_vector);
+
+	status = nvme_submit_admin_cmd(dev, &c, NULL);
+	if (status)
+		return -EIO;
+	return 0;
+}
+
+static int adapter_alloc_sq(struct nvme_dev *dev, u16 qid,
+						struct nvme_queue *nvmeq)
+{
+	int status;
+	struct nvme_command c;
+	int flags = NVME_QUEUE_PHYS_CONTIG | NVME_SQ_PRIO_MEDIUM;
+
+	memset(&c, 0, sizeof(c));
+	c.create_sq.opcode = nvme_admin_create_sq;
+	c.create_sq.prp1 = cpu_to_le64(nvmeq->sq_dma_addr);
+	c.create_sq.sqid = cpu_to_le16(qid);
+	c.create_sq.qsize = cpu_to_le16(nvmeq->q_depth - 1);
+	c.create_sq.sq_flags = cpu_to_le16(flags);
+	c.create_sq.cqid = cpu_to_le16(qid);
+
+	status = nvme_submit_admin_cmd(dev, &c, NULL);
+	if (status)
+		return -EIO;
+	return 0;
+}
+
+static int adapter_delete_cq(struct nvme_dev *dev, u16 cqid)
+{
+	return adapter_delete_queue(dev, nvme_admin_delete_cq, cqid);
+}
+
+static int adapter_delete_sq(struct nvme_dev *dev, u16 sqid)
+{
+	return adapter_delete_queue(dev, nvme_admin_delete_sq, sqid);
+}
+
+static int nvme_identify(struct nvme_dev *dev, unsigned nsid, unsigned cns,
+							dma_addr_t dma_addr)
+{
+	struct nvme_command c;
+
+	memset(&c, 0, sizeof(c));
+	c.identify.opcode = nvme_admin_identify;
+	c.identify.nsid = cpu_to_le32(nsid);
+	c.identify.prp1 = cpu_to_le64(dma_addr);
+	c.identify.cns = cpu_to_le32(cns);
+
+	return nvme_submit_admin_cmd(dev, &c, NULL);
+}
+
+static int nvme_get_features(struct nvme_dev *dev, unsigned fid,
+				unsigned dword11, dma_addr_t dma_addr)
+{
+	struct nvme_command c;
+
+	memset(&c, 0, sizeof(c));
+	c.features.opcode = nvme_admin_get_features;
+	c.features.prp1 = cpu_to_le64(dma_addr);
+	c.features.fid = cpu_to_le32(fid);
+	c.features.dword11 = cpu_to_le32(dword11);
+
+	return nvme_submit_admin_cmd(dev, &c, NULL);
+}
+
+static int nvme_set_features(struct nvme_dev *dev, unsigned fid,
+			unsigned dword11, dma_addr_t dma_addr, u32 *result)
+{
+	struct nvme_command c;
+
+	memset(&c, 0, sizeof(c));
+	c.features.opcode = nvme_admin_set_features;
+	c.features.prp1 = cpu_to_le64(dma_addr);
+	c.features.fid = cpu_to_le32(fid);
+	c.features.dword11 = cpu_to_le32(dword11);
+
+	return nvme_submit_admin_cmd(dev, &c, result);
+}
+
+static void nvme_free_queue(struct nvme_dev *dev, int qid)
+{
+	struct nvme_queue *nvmeq = dev->queues[qid];
+	int vector = dev->entry[nvmeq->cq_vector].vector;
+
+	irq_set_affinity_hint(vector, NULL);
+	free_irq(vector, nvmeq);
+
+	/* Don't tell the adapter to delete the admin queue */
+	if (qid) {
+		adapter_delete_sq(dev, qid);
+		adapter_delete_cq(dev, qid);
+	}
+
+	dma_free_coherent(nvmeq->q_dmadev, CQ_SIZE(nvmeq->q_depth),
+				(void *)nvmeq->cqes, nvmeq->cq_dma_addr);
+	dma_free_coherent(nvmeq->q_dmadev, SQ_SIZE(nvmeq->q_depth),
+					nvmeq->sq_cmds, nvmeq->sq_dma_addr);
+	kfree(nvmeq);
+}
+
+static struct nvme_queue *nvme_alloc_queue(struct nvme_dev *dev, int qid,
+							int depth, int vector)
+{
+	struct device *dmadev = &dev->pci_dev->dev;
+	unsigned extra = (depth / 8) + (depth * sizeof(struct nvme_cmd_info));
+	struct nvme_queue *nvmeq = kzalloc(sizeof(*nvmeq) + extra, GFP_KERNEL);
+	if (!nvmeq)
+		return NULL;
+
+	nvmeq->cqes = dma_alloc_coherent(dmadev, CQ_SIZE(depth),
+					&nvmeq->cq_dma_addr, GFP_KERNEL);
+	if (!nvmeq->cqes)
+		goto free_nvmeq;
+	memset((void *)nvmeq->cqes, 0, CQ_SIZE(depth));
+
+	nvmeq->sq_cmds = dma_alloc_coherent(dmadev, SQ_SIZE(depth),
+					&nvmeq->sq_dma_addr, GFP_KERNEL);
+	if (!nvmeq->sq_cmds)
+		goto free_cqdma;
+
+	nvmeq->q_dmadev = dmadev;
+	nvmeq->dev = dev;
+	spin_lock_init(&nvmeq->q_lock);
+	nvmeq->cq_head = 0;
+	nvmeq->cq_phase = 1;
+	init_waitqueue_head(&nvmeq->sq_full);
+	init_waitqueue_entry(&nvmeq->sq_cong_wait, nvme_thread);
+	bio_list_init(&nvmeq->sq_cong);
+	nvmeq->q_db = &dev->dbs[qid << (dev->db_stride + 1)];
+	nvmeq->q_depth = depth;
+	nvmeq->cq_vector = vector;
+
+	return nvmeq;
+
+ free_cqdma:
+	dma_free_coherent(dmadev, CQ_SIZE(nvmeq->q_depth), (void *)nvmeq->cqes,
+							nvmeq->cq_dma_addr);
+ free_nvmeq:
+	kfree(nvmeq);
+	return NULL;
+}
+
+static int queue_request_irq(struct nvme_dev *dev, struct nvme_queue *nvmeq,
+							const char *name)
+{
+	if (use_threaded_interrupts)
+		return request_threaded_irq(dev->entry[nvmeq->cq_vector].vector,
+					nvme_irq_check, nvme_irq,
+					IRQF_DISABLED | IRQF_SHARED,
+					name, nvmeq);
+	return request_irq(dev->entry[nvmeq->cq_vector].vector, nvme_irq,
+				IRQF_DISABLED | IRQF_SHARED, name, nvmeq);
+}
+
+static __devinit struct nvme_queue *nvme_create_queue(struct nvme_dev *dev,
+					int qid, int cq_size, int vector)
+{
+	int result;
+	struct nvme_queue *nvmeq = nvme_alloc_queue(dev, qid, cq_size, vector);
+
+	if (!nvmeq)
+		return ERR_PTR(-ENOMEM);
+
+	result = adapter_alloc_cq(dev, qid, nvmeq);
+	if (result < 0)
+		goto free_nvmeq;
+
+	result = adapter_alloc_sq(dev, qid, nvmeq);
+	if (result < 0)
+		goto release_cq;
+
+	result = queue_request_irq(dev, nvmeq, "nvme");
+	if (result < 0)
+		goto release_sq;
+
+	return nvmeq;
+
+ release_sq:
+	adapter_delete_sq(dev, qid);
+ release_cq:
+	adapter_delete_cq(dev, qid);
+ free_nvmeq:
+	dma_free_coherent(nvmeq->q_dmadev, CQ_SIZE(nvmeq->q_depth),
+				(void *)nvmeq->cqes, nvmeq->cq_dma_addr);
+	dma_free_coherent(nvmeq->q_dmadev, SQ_SIZE(nvmeq->q_depth),
+					nvmeq->sq_cmds, nvmeq->sq_dma_addr);
+	kfree(nvmeq);
+	return ERR_PTR(result);
+}
+
+static int __devinit nvme_configure_admin_queue(struct nvme_dev *dev)
+{
+	int result;
+	u32 aqa;
+	u64 cap;
+	unsigned long timeout;
+	struct nvme_queue *nvmeq;
+
+	dev->dbs = ((void __iomem *)dev->bar) + 4096;
+
+	nvmeq = nvme_alloc_queue(dev, 0, 64, 0);
+	if (!nvmeq)
+		return -ENOMEM;
+
+	aqa = nvmeq->q_depth - 1;
+	aqa |= aqa << 16;
+
+	dev->ctrl_config = NVME_CC_ENABLE | NVME_CC_CSS_NVM;
+	dev->ctrl_config |= (PAGE_SHIFT - 12) << NVME_CC_MPS_SHIFT;
+	dev->ctrl_config |= NVME_CC_ARB_RR | NVME_CC_SHN_NONE;
+	dev->ctrl_config |= NVME_CC_IOSQES | NVME_CC_IOCQES;
+
+	writel(0, &dev->bar->cc);
+	writel(aqa, &dev->bar->aqa);
+	writeq(nvmeq->sq_dma_addr, &dev->bar->asq);
+	writeq(nvmeq->cq_dma_addr, &dev->bar->acq);
+	writel(dev->ctrl_config, &dev->bar->cc);
+
+	cap = readq(&dev->bar->cap);
+	timeout = ((NVME_CAP_TIMEOUT(cap) + 1) * HZ / 2) + jiffies;
+	dev->db_stride = NVME_CAP_STRIDE(cap);
+
+	while (!(readl(&dev->bar->csts) & NVME_CSTS_RDY)) {
+		msleep(100);
+		if (fatal_signal_pending(current))
+			return -EINTR;
+		if (time_after(jiffies, timeout)) {
+			dev_err(&dev->pci_dev->dev,
+				"Device not ready; aborting initialisation\n");
+			return -ENODEV;
+		}
+	}
+
+	result = queue_request_irq(dev, nvmeq, "nvme admin");
+	dev->queues[0] = nvmeq;
+	return result;
+}
+
+static struct nvme_iod *nvme_map_user_pages(struct nvme_dev *dev, int write,
+				unsigned long addr, unsigned length)
+{
+	int i, err, count, nents, offset;
+	struct scatterlist *sg;
+	struct page **pages;
+	struct nvme_iod *iod;
+
+	if (addr & 3)
+		return ERR_PTR(-EINVAL);
+	if (!length)
+		return ERR_PTR(-EINVAL);
+
+	offset = offset_in_page(addr);
+	count = DIV_ROUND_UP(offset + length, PAGE_SIZE);
+	pages = kcalloc(count, sizeof(*pages), GFP_KERNEL);
+
+	err = get_user_pages_fast(addr, count, 1, pages);
+	if (err < count) {
+		count = err;
+		err = -EFAULT;
+		goto put_pages;
+	}
+
+	iod = nvme_alloc_iod(count, length, GFP_KERNEL);
+	sg = iod->sg;
+	sg_init_table(sg, count);
+	for (i = 0; i < count; i++) {
+		sg_set_page(&sg[i], pages[i],
+				min_t(int, length, PAGE_SIZE - offset), offset);
+		length -= (PAGE_SIZE - offset);
+		offset = 0;
+	}
+	sg_mark_end(&sg[i - 1]);
+	iod->nents = count;
+
+	err = -ENOMEM;
+	nents = dma_map_sg(&dev->pci_dev->dev, sg, count,
+				write ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+	if (!nents)
+		goto free_iod;
+
+	kfree(pages);
+	return iod;
+
+ free_iod:
+	kfree(iod);
+ put_pages:
+	for (i = 0; i < count; i++)
+		put_page(pages[i]);
+	kfree(pages);
+	return ERR_PTR(err);
+}
+
+static void nvme_unmap_user_pages(struct nvme_dev *dev, int write,
+			struct nvme_iod *iod)
+{
+	int i;
+
+	dma_unmap_sg(&dev->pci_dev->dev, iod->sg, iod->nents,
+				write ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+
+	for (i = 0; i < iod->nents; i++)
+		put_page(sg_page(&iod->sg[i]));
+}
+
+static int nvme_submit_io(struct nvme_ns *ns, struct nvme_user_io __user *uio)
+{
+	struct nvme_dev *dev = ns->dev;
+	struct nvme_queue *nvmeq;
+	struct nvme_user_io io;
+	struct nvme_command c;
+	unsigned length;
+	int status;
+	struct nvme_iod *iod;
+
+	if (copy_from_user(&io, uio, sizeof(io)))
+		return -EFAULT;
+	length = (io.nblocks + 1) << ns->lba_shift;
+
+	switch (io.opcode) {
+	case nvme_cmd_write:
+	case nvme_cmd_read:
+	case nvme_cmd_compare:
+		iod = nvme_map_user_pages(dev, io.opcode & 1, io.addr, length);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	if (IS_ERR(iod))
+		return PTR_ERR(iod);
+
+	memset(&c, 0, sizeof(c));
+	c.rw.opcode = io.opcode;
+	c.rw.flags = io.flags;
+	c.rw.nsid = cpu_to_le32(ns->ns_id);
+	c.rw.slba = cpu_to_le64(io.slba);
+	c.rw.length = cpu_to_le16(io.nblocks);
+	c.rw.control = cpu_to_le16(io.control);
+	c.rw.dsmgmt = cpu_to_le16(io.dsmgmt);
+	c.rw.reftag = io.reftag;
+	c.rw.apptag = io.apptag;
+	c.rw.appmask = io.appmask;
+	/* XXX: metadata */
+	length = nvme_setup_prps(dev, &c.common, iod, length, GFP_KERNEL);
+
+	nvmeq = get_nvmeq(dev);
+	/*
+	 * Since nvme_submit_sync_cmd sleeps, we can't keep preemption
+	 * disabled.  We may be preempted at any point, and be rescheduled
+	 * to a different CPU.  That will cause cacheline bouncing, but no
+	 * additional races since q_lock already protects against other CPUs.
+	 */
+	put_nvmeq(nvmeq);
+	if (length != (io.nblocks + 1) << ns->lba_shift)
+		status = -ENOMEM;
+	else
+		status = nvme_submit_sync_cmd(nvmeq, &c, NULL, NVME_IO_TIMEOUT);
+
+	nvme_unmap_user_pages(dev, io.opcode & 1, iod);
+	nvme_free_iod(dev, iod);
+	return status;
+}
+
+static int nvme_user_admin_cmd(struct nvme_ns *ns,
+					struct nvme_admin_cmd __user *ucmd)
+{
+	struct nvme_dev *dev = ns->dev;
+	struct nvme_admin_cmd cmd;
+	struct nvme_command c;
+	int status, length;
+	struct nvme_iod *iod;
+
+	if (!capable(CAP_SYS_ADMIN))
+		return -EACCES;
+	if (copy_from_user(&cmd, ucmd, sizeof(cmd)))
+		return -EFAULT;
+
+	memset(&c, 0, sizeof(c));
+	c.common.opcode = cmd.opcode;
+	c.common.flags = cmd.flags;
+	c.common.nsid = cpu_to_le32(cmd.nsid);
+	c.common.cdw2[0] = cpu_to_le32(cmd.cdw2);
+	c.common.cdw2[1] = cpu_to_le32(cmd.cdw3);
+	c.common.cdw10[0] = cpu_to_le32(cmd.cdw10);
+	c.common.cdw10[1] = cpu_to_le32(cmd.cdw11);
+	c.common.cdw10[2] = cpu_to_le32(cmd.cdw12);
+	c.common.cdw10[3] = cpu_to_le32(cmd.cdw13);
+	c.common.cdw10[4] = cpu_to_le32(cmd.cdw14);
+	c.common.cdw10[5] = cpu_to_le32(cmd.cdw15);
+
+	length = cmd.data_len;
+	if (cmd.data_len) {
+		iod = nvme_map_user_pages(dev, cmd.opcode & 1, cmd.addr,
+								length);
+		if (IS_ERR(iod))
+			return PTR_ERR(iod);
+		length = nvme_setup_prps(dev, &c.common, iod, length,
+								GFP_KERNEL);
+	}
+
+	if (length != cmd.data_len)
+		status = -ENOMEM;
+	else
+		status = nvme_submit_admin_cmd(dev, &c, NULL);
+
+	if (cmd.data_len) {
+		nvme_unmap_user_pages(dev, cmd.opcode & 1, iod);
+		nvme_free_iod(dev, iod);
+	}
+	return status;
+}
+
+static int nvme_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd,
+							unsigned long arg)
+{
+	struct nvme_ns *ns = bdev->bd_disk->private_data;
+
+	switch (cmd) {
+	case NVME_IOCTL_ID:
+		return ns->ns_id;
+	case NVME_IOCTL_ADMIN_CMD:
+		return nvme_user_admin_cmd(ns, (void __user *)arg);
+	case NVME_IOCTL_SUBMIT_IO:
+		return nvme_submit_io(ns, (void __user *)arg);
+	default:
+		return -ENOTTY;
+	}
+}
+
+static const struct block_device_operations nvme_fops = {
+	.owner		= THIS_MODULE,
+	.ioctl		= nvme_ioctl,
+	.compat_ioctl	= nvme_ioctl,
+};
+
+static void nvme_timeout_ios(struct nvme_queue *nvmeq)
+{
+	int depth = nvmeq->q_depth - 1;
+	struct nvme_cmd_info *info = nvme_cmd_info(nvmeq);
+	unsigned long now = jiffies;
+	int cmdid;
+
+	for_each_set_bit(cmdid, nvmeq->cmdid_data, depth) {
+		void *ctx;
+		nvme_completion_fn fn;
+		static struct nvme_completion cqe = { .status = cpu_to_le16(NVME_SC_ABORT_REQ) << 1, };
+
+		if (!time_after(now, info[cmdid].timeout))
+			continue;
+		dev_warn(nvmeq->q_dmadev, "Timing out I/O %d\n", cmdid);
+		ctx = cancel_cmdid(nvmeq, cmdid, &fn);
+		fn(nvmeq->dev, ctx, &cqe);
+	}
+}
+
+static void nvme_resubmit_bios(struct nvme_queue *nvmeq)
+{
+	while (bio_list_peek(&nvmeq->sq_cong)) {
+		struct bio *bio = bio_list_pop(&nvmeq->sq_cong);
+		struct nvme_ns *ns = bio->bi_bdev->bd_disk->private_data;
+		if (nvme_submit_bio_queue(nvmeq, ns, bio)) {
+			bio_list_add_head(&nvmeq->sq_cong, bio);
+			break;
+		}
+		if (bio_list_empty(&nvmeq->sq_cong))
+			remove_wait_queue(&nvmeq->sq_full,
+							&nvmeq->sq_cong_wait);
+	}
+}
+
+static int nvme_kthread(void *data)
+{
+	struct nvme_dev *dev;
+
+	while (!kthread_should_stop()) {
+		__set_current_state(TASK_RUNNING);
+		spin_lock(&dev_list_lock);
+		list_for_each_entry(dev, &dev_list, node) {
+			int i;
+			for (i = 0; i < dev->queue_count; i++) {
+				struct nvme_queue *nvmeq = dev->queues[i];
+				if (!nvmeq)
+					continue;
+				spin_lock_irq(&nvmeq->q_lock);
+				if (nvme_process_cq(nvmeq))
+					printk("process_cq did something\n");
+				nvme_timeout_ios(nvmeq);
+				nvme_resubmit_bios(nvmeq);
+				spin_unlock_irq(&nvmeq->q_lock);
+			}
+		}
+		spin_unlock(&dev_list_lock);
+		set_current_state(TASK_INTERRUPTIBLE);
+		schedule_timeout(HZ);
+	}
+	return 0;
+}
+
+static DEFINE_IDA(nvme_index_ida);
+
+static int nvme_get_ns_idx(void)
+{
+	int index, error;
+
+	do {
+		if (!ida_pre_get(&nvme_index_ida, GFP_KERNEL))
+			return -1;
+
+		spin_lock(&dev_list_lock);
+		error = ida_get_new(&nvme_index_ida, &index);
+		spin_unlock(&dev_list_lock);
+	} while (error == -EAGAIN);
+
+	if (error)
+		index = -1;
+	return index;
+}
+
+static void nvme_put_ns_idx(int index)
+{
+	spin_lock(&dev_list_lock);
+	ida_remove(&nvme_index_ida, index);
+	spin_unlock(&dev_list_lock);
+}
+
+static struct nvme_ns *nvme_alloc_ns(struct nvme_dev *dev, int nsid,
+			struct nvme_id_ns *id, struct nvme_lba_range_type *rt)
+{
+	struct nvme_ns *ns;
+	struct gendisk *disk;
+	int lbaf;
+
+	if (rt->attributes & NVME_LBART_ATTRIB_HIDE)
+		return NULL;
+
+	ns = kzalloc(sizeof(*ns), GFP_KERNEL);
+	if (!ns)
+		return NULL;
+	ns->queue = blk_alloc_queue(GFP_KERNEL);
+	if (!ns->queue)
+		goto out_free_ns;
+	ns->queue->queue_flags = QUEUE_FLAG_DEFAULT;
+	queue_flag_set_unlocked(QUEUE_FLAG_NOMERGES, ns->queue);
+	queue_flag_set_unlocked(QUEUE_FLAG_NONROT, ns->queue);
+/*	queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, ns->queue); */
+	blk_queue_make_request(ns->queue, nvme_make_request);
+	ns->dev = dev;
+	ns->queue->queuedata = ns;
+
+	disk = alloc_disk(NVME_MINORS);
+	if (!disk)
+		goto out_free_queue;
+	ns->ns_id = nsid;
+	ns->disk = disk;
+	lbaf = id->flbas & 0xf;
+	ns->lba_shift = id->lbaf[lbaf].ds;
+
+	disk->major = nvme_major;
+	disk->minors = NVME_MINORS;
+	disk->first_minor = NVME_MINORS * nvme_get_ns_idx();
+	disk->fops = &nvme_fops;
+	disk->private_data = ns;
+	disk->queue = ns->queue;
+	disk->driverfs_dev = &dev->pci_dev->dev;
+	sprintf(disk->disk_name, "nvme%dn%d", dev->instance, nsid);
+	set_capacity(disk, le64_to_cpup(&id->nsze) << (ns->lba_shift - 9));
+
+	return ns;
+
+ out_free_queue:
+	blk_cleanup_queue(ns->queue);
+ out_free_ns:
+	kfree(ns);
+	return NULL;
+}
+
+static void nvme_ns_free(struct nvme_ns *ns)
+{
+	int index = ns->disk->first_minor / NVME_MINORS;
+	put_disk(ns->disk);
+	nvme_put_ns_idx(index);
+	blk_cleanup_queue(ns->queue);
+	kfree(ns);
+}
+
+static int set_queue_count(struct nvme_dev *dev, int count)
+{
+	int status;
+	u32 result;
+	u32 q_count = (count - 1) | ((count - 1) << 16);
+
+	status = nvme_set_features(dev, NVME_FEAT_NUM_QUEUES, q_count, 0,
+								&result);
+	if (status)
+		return -EIO;
+	return min(result & 0xffff, result >> 16) + 1;
+}
+
+static int __devinit nvme_setup_io_queues(struct nvme_dev *dev)
+{
+	int result, cpu, i, nr_io_queues, db_bar_size;
+
+	nr_io_queues = num_online_cpus();
+	result = set_queue_count(dev, nr_io_queues);
+	if (result < 0)
+		return result;
+	if (result < nr_io_queues)
+		nr_io_queues = result;
+
+	/* Deregister the admin queue's interrupt */
+	free_irq(dev->entry[0].vector, dev->queues[0]);
+
+	db_bar_size = 4096 + ((nr_io_queues + 1) << (dev->db_stride + 3));
+	if (db_bar_size > 8192) {
+		iounmap(dev->bar);
+		dev->bar = ioremap(pci_resource_start(dev->pci_dev, 0),
+								db_bar_size);
+		dev->dbs = ((void __iomem *)dev->bar) + 4096;
+		dev->queues[0]->q_db = dev->dbs;
+	}
+
+	for (i = 0; i < nr_io_queues; i++)
+		dev->entry[i].entry = i;
+	for (;;) {
+		result = pci_enable_msix(dev->pci_dev, dev->entry,
+								nr_io_queues);
+		if (result == 0) {
+			break;
+		} else if (result > 0) {
+			nr_io_queues = result;
+			continue;
+		} else {
+			nr_io_queues = 1;
+			break;
+		}
+	}
+
+	result = queue_request_irq(dev, dev->queues[0], "nvme admin");
+	/* XXX: handle failure here */
+
+	cpu = cpumask_first(cpu_online_mask);
+	for (i = 0; i < nr_io_queues; i++) {
+		irq_set_affinity_hint(dev->entry[i].vector, get_cpu_mask(cpu));
+		cpu = cpumask_next(cpu, cpu_online_mask);
+	}
+
+	for (i = 0; i < nr_io_queues; i++) {
+		dev->queues[i + 1] = nvme_create_queue(dev, i + 1,
+							NVME_Q_DEPTH, i);
+		if (IS_ERR(dev->queues[i + 1]))
+			return PTR_ERR(dev->queues[i + 1]);
+		dev->queue_count++;
+	}
+
+	for (; i < num_possible_cpus(); i++) {
+		int target = i % rounddown_pow_of_two(dev->queue_count - 1);
+		dev->queues[i + 1] = dev->queues[target + 1];
+	}
+
+	return 0;
+}
+
+static void nvme_free_queues(struct nvme_dev *dev)
+{
+	int i;
+
+	for (i = dev->queue_count - 1; i >= 0; i--)
+		nvme_free_queue(dev, i);
+}
+
+static int __devinit nvme_dev_add(struct nvme_dev *dev)
+{
+	int res, nn, i;
+	struct nvme_ns *ns, *next;
+	struct nvme_id_ctrl *ctrl;
+	struct nvme_id_ns *id_ns;
+	void *mem;
+	dma_addr_t dma_addr;
+
+	res = nvme_setup_io_queues(dev);
+	if (res)
+		return res;
+
+	mem = dma_alloc_coherent(&dev->pci_dev->dev, 8192, &dma_addr,
+								GFP_KERNEL);
+
+	res = nvme_identify(dev, 0, 1, dma_addr);
+	if (res) {
+		res = -EIO;
+		goto out_free;
+	}
+
+	ctrl = mem;
+	nn = le32_to_cpup(&ctrl->nn);
+	memcpy(dev->serial, ctrl->sn, sizeof(ctrl->sn));
+	memcpy(dev->model, ctrl->mn, sizeof(ctrl->mn));
+	memcpy(dev->firmware_rev, ctrl->fr, sizeof(ctrl->fr));
+
+	id_ns = mem;
+	for (i = 1; i <= nn; i++) {
+		res = nvme_identify(dev, i, 0, dma_addr);
+		if (res)
+			continue;
+
+		if (id_ns->ncap == 0)
+			continue;
+
+		res = nvme_get_features(dev, NVME_FEAT_LBA_RANGE, i,
+							dma_addr + 4096);
+		if (res)
+			continue;
+
+		ns = nvme_alloc_ns(dev, i, mem, mem + 4096);
+		if (ns)
+			list_add_tail(&ns->list, &dev->namespaces);
+	}
+	list_for_each_entry(ns, &dev->namespaces, list)
+		add_disk(ns->disk);
+
+	goto out;
+
+ out_free:
+	list_for_each_entry_safe(ns, next, &dev->namespaces, list) {
+		list_del(&ns->list);
+		nvme_ns_free(ns);
+	}
+
+ out:
+	dma_free_coherent(&dev->pci_dev->dev, 8192, mem, dma_addr);
+	return res;
+}
+
+static int nvme_dev_remove(struct nvme_dev *dev)
+{
+	struct nvme_ns *ns, *next;
+
+	spin_lock(&dev_list_lock);
+	list_del(&dev->node);
+	spin_unlock(&dev_list_lock);
+
+	/* TODO: wait all I/O finished or cancel them */
+
+	list_for_each_entry_safe(ns, next, &dev->namespaces, list) {
+		list_del(&ns->list);
+		del_gendisk(ns->disk);
+		nvme_ns_free(ns);
+	}
+
+	nvme_free_queues(dev);
+
+	return 0;
+}
+
+static int nvme_setup_prp_pools(struct nvme_dev *dev)
+{
+	struct device *dmadev = &dev->pci_dev->dev;
+	dev->prp_page_pool = dma_pool_create("prp list page", dmadev,
+						PAGE_SIZE, PAGE_SIZE, 0);
+	if (!dev->prp_page_pool)
+		return -ENOMEM;
+
+	/* Optimisation for I/Os between 4k and 128k */
+	dev->prp_small_pool = dma_pool_create("prp list 256", dmadev,
+						256, 256, 0);
+	if (!dev->prp_small_pool) {
+		dma_pool_destroy(dev->prp_page_pool);
+		return -ENOMEM;
+	}
+	return 0;
+}
+
+static void nvme_release_prp_pools(struct nvme_dev *dev)
+{
+	dma_pool_destroy(dev->prp_page_pool);
+	dma_pool_destroy(dev->prp_small_pool);
+}
+
+/* XXX: Use an ida or something to let remove / add work correctly */
+static void nvme_set_instance(struct nvme_dev *dev)
+{
+	static int instance;
+	dev->instance = instance++;
+}
+
+static void nvme_release_instance(struct nvme_dev *dev)
+{
+}
+
+static int __devinit nvme_probe(struct pci_dev *pdev,
+						const struct pci_device_id *id)
+{
+	int bars, result = -ENOMEM;
+	struct nvme_dev *dev;
+
+	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+	if (!dev)
+		return -ENOMEM;
+	dev->entry = kcalloc(num_possible_cpus(), sizeof(*dev->entry),
+								GFP_KERNEL);
+	if (!dev->entry)
+		goto free;
+	dev->queues = kcalloc(num_possible_cpus() + 1, sizeof(void *),
+								GFP_KERNEL);
+	if (!dev->queues)
+		goto free;
+
+	if (pci_enable_device_mem(pdev))
+		goto free;
+	pci_set_master(pdev);
+	bars = pci_select_bars(pdev, IORESOURCE_MEM);
+	if (pci_request_selected_regions(pdev, bars, "nvme"))
+		goto disable;
+
+	INIT_LIST_HEAD(&dev->namespaces);
+	dev->pci_dev = pdev;
+	pci_set_drvdata(pdev, dev);
+	dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
+	dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
+	nvme_set_instance(dev);
+	dev->entry[0].vector = pdev->irq;
+
+	result = nvme_setup_prp_pools(dev);
+	if (result)
+		goto disable_msix;
+
+	dev->bar = ioremap(pci_resource_start(pdev, 0), 8192);
+	if (!dev->bar) {
+		result = -ENOMEM;
+		goto disable_msix;
+	}
+
+	result = nvme_configure_admin_queue(dev);
+	if (result)
+		goto unmap;
+	dev->queue_count++;
+
+	spin_lock(&dev_list_lock);
+	list_add(&dev->node, &dev_list);
+	spin_unlock(&dev_list_lock);
+
+	result = nvme_dev_add(dev);
+	if (result)
+		goto delete;
+
+	return 0;
+
+ delete:
+	spin_lock(&dev_list_lock);
+	list_del(&dev->node);
+	spin_unlock(&dev_list_lock);
+
+	nvme_free_queues(dev);
+ unmap:
+	iounmap(dev->bar);
+ disable_msix:
+	pci_disable_msix(pdev);
+	nvme_release_instance(dev);
+	nvme_release_prp_pools(dev);
+ disable:
+	pci_disable_device(pdev);
+	pci_release_regions(pdev);
+ free:
+	kfree(dev->queues);
+	kfree(dev->entry);
+	kfree(dev);
+	return result;
+}
+
+static void __devexit nvme_remove(struct pci_dev *pdev)
+{
+	struct nvme_dev *dev = pci_get_drvdata(pdev);
+	nvme_dev_remove(dev);
+	pci_disable_msix(pdev);
+	iounmap(dev->bar);
+	nvme_release_instance(dev);
+	nvme_release_prp_pools(dev);
+	pci_disable_device(pdev);
+	pci_release_regions(pdev);
+	kfree(dev->queues);
+	kfree(dev->entry);
+	kfree(dev);
+}
+
+/* These functions are yet to be implemented */
+#define nvme_error_detected NULL
+#define nvme_dump_registers NULL
+#define nvme_link_reset NULL
+#define nvme_slot_reset NULL
+#define nvme_error_resume NULL
+#define nvme_suspend NULL
+#define nvme_resume NULL
+
+static struct pci_error_handlers nvme_err_handler = {
+	.error_detected	= nvme_error_detected,
+	.mmio_enabled	= nvme_dump_registers,
+	.link_reset	= nvme_link_reset,
+	.slot_reset	= nvme_slot_reset,
+	.resume		= nvme_error_resume,
+};
+
+/* Move to pci_ids.h later */
+#define PCI_CLASS_STORAGE_EXPRESS	0x010802
+
+static DEFINE_PCI_DEVICE_TABLE(nvme_id_table) = {
+	{ PCI_DEVICE_CLASS(PCI_CLASS_STORAGE_EXPRESS, 0xffffff) },
+	{ 0, }
+};
+MODULE_DEVICE_TABLE(pci, nvme_id_table);
+
+static struct pci_driver nvme_driver = {
+	.name		= "nvme",
+	.id_table	= nvme_id_table,
+	.probe		= nvme_probe,
+	.remove		= __devexit_p(nvme_remove),
+	.suspend	= nvme_suspend,
+	.resume		= nvme_resume,
+	.err_handler	= &nvme_err_handler,
+};
+
+static int __init nvme_init(void)
+{
+	int result = -EBUSY;
+
+	nvme_thread = kthread_run(nvme_kthread, NULL, "nvme");
+	if (IS_ERR(nvme_thread))
+		return PTR_ERR(nvme_thread);
+
+	nvme_major = register_blkdev(nvme_major, "nvme");
+	if (nvme_major <= 0)
+		goto kill_kthread;
+
+	result = pci_register_driver(&nvme_driver);
+	if (result)
+		goto unregister_blkdev;
+	return 0;
+
+ unregister_blkdev:
+	unregister_blkdev(nvme_major, "nvme");
+ kill_kthread:
+	kthread_stop(nvme_thread);
+	return result;
+}
+
+static void __exit nvme_exit(void)
+{
+	pci_unregister_driver(&nvme_driver);
+	unregister_blkdev(nvme_major, "nvme");
+	kthread_stop(nvme_thread);
+}
+
+MODULE_AUTHOR("Matthew Wilcox <willy@linux.intel.com>");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("0.8");
+module_init(nvme_init);
+module_exit(nvme_exit);
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 732215b..54ca8b2 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -965,6 +965,7 @@
  */
 static void init_std_data(struct entropy_store *r)
 {
+	int i;
 	ktime_t now;
 	unsigned long flags;
 
@@ -974,6 +975,11 @@
 
 	now = ktime_get_real();
 	mix_pool_bytes(r, &now, sizeof(now));
+	for (i = r->poolinfo->POOLBYTES; i > 0; i -= sizeof flags) {
+		if (!arch_get_random_long(&flags))
+			break;
+		mix_pool_bytes(r, &flags, sizeof(flags));
+	}
 	mix_pool_bytes(r, utsname(), sizeof(*(utsname())));
 }
 
diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c
index 6a8771f..32362cf 100644
--- a/drivers/char/tpm/tpm.c
+++ b/drivers/char/tpm/tpm.c
@@ -846,6 +846,15 @@
 
 	do {
 		rc = __tpm_pcr_read(chip, 0, digest);
+		if (rc == TPM_ERR_DISABLED || rc == TPM_ERR_DEACTIVATED) {
+			dev_info(chip->dev,
+				 "TPM is disabled/deactivated (0x%X)\n", rc);
+			/* TPM is disabled and/or deactivated; driver can
+			 * proceed and TPM does handle commands for
+			 * suspend/resume correctly
+			 */
+			return 0;
+		}
 		if (rc != TPM_WARN_DOING_SELFTEST)
 			return rc;
 		msleep(delay_msec);
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index 8c1df30..0105471 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -39,6 +39,9 @@
 };
 
 #define TPM_WARN_DOING_SELFTEST 0x802
+#define TPM_ERR_DEACTIVATED     0x6
+#define TPM_ERR_DISABLED        0x7
+
 #define TPM_HEADER_SIZE		10
 extern ssize_t tpm_show_pubek(struct device *, struct device_attribute *attr,
 				char *);
diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index 5a99bb3..f1a2749 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -124,7 +124,7 @@
 
 config MX3_IPU
 	bool "MX3x Image Processing Unit support"
-	depends on SOC_IMX31 || SOC_IMX35
+	depends on ARCH_MXC
 	select DMA_ENGINE
 	default y
 	help
@@ -187,6 +187,13 @@
 	help
 	  Enable support for the Timberdale FPGA DMA engine.
 
+config SIRF_DMA
+	tristate "CSR SiRFprimaII DMA support"
+	depends on ARCH_PRIMA2
+	select DMA_ENGINE
+	help
+	  Enable support for the CSR SiRFprimaII DMA engine.
+
 config ARCH_HAS_ASYNC_TX_FIND_CHANNEL
 	bool
 
@@ -201,26 +208,26 @@
 	  platform_data for a dma-pl330 device.
 
 config PCH_DMA
-	tristate "Intel EG20T PCH / OKI Semi IOH(ML7213/ML7223) DMA support"
+	tristate "Intel EG20T PCH / LAPIS Semicon IOH(ML7213/ML7223/ML7831) DMA"
 	depends on PCI && X86
 	select DMA_ENGINE
 	help
 	  Enable support for Intel EG20T PCH DMA engine.
 
-	  This driver also can be used for OKI SEMICONDUCTOR IOH(Input/
-	  Output Hub), ML7213 and ML7223.
-	  ML7213 IOH is for IVI(In-Vehicle Infotainment) use and ML7223 IOH is
-	  for MP(Media Phone) use.
-	  ML7213/ML7223 is companion chip for Intel Atom E6xx series.
-	  ML7213/ML7223 is completely compatible for Intel EG20T PCH.
+	  This driver also can be used for LAPIS Semiconductor IOH(Input/
+	  Output Hub), ML7213, ML7223 and ML7831.
+	  ML7213 IOH is for IVI(In-Vehicle Infotainment) use, ML7223 IOH is
+	  for MP(Media Phone) use and ML7831 IOH is for general purpose use.
+	  ML7213/ML7223/ML7831 is companion chip for Intel Atom E6xx series.
+	  ML7213/ML7223/ML7831 is completely compatible for Intel EG20T PCH.
 
 config IMX_SDMA
 	tristate "i.MX SDMA support"
-	depends on ARCH_MX25 || SOC_IMX31 || SOC_IMX35 || ARCH_MX5
+	depends on ARCH_MXC
 	select DMA_ENGINE
 	help
 	  Support the i.MX SDMA engine. This engine is integrated into
-	  Freescale i.MX25/31/35/51 chips.
+	  Freescale i.MX25/31/35/51/53 chips.
 
 config IMX_DMA
 	tristate "i.MX DMA support"
diff --git a/drivers/dma/Makefile b/drivers/dma/Makefile
index 30cf3b1..009a222 100644
--- a/drivers/dma/Makefile
+++ b/drivers/dma/Makefile
@@ -21,6 +21,7 @@
 obj-$(CONFIG_IMX_DMA) += imx-dma.o
 obj-$(CONFIG_MXS_DMA) += mxs-dma.o
 obj-$(CONFIG_TIMB_DMA) += timb_dma.o
+obj-$(CONFIG_SIRF_DMA) += sirf-dma.o
 obj-$(CONFIG_STE_DMA40) += ste_dma40.o ste_dma40_ll.o
 obj-$(CONFIG_PL330_DMA) += pl330.o
 obj-$(CONFIG_PCH_DMA) += pch_dma.o
diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
index 0698695..8a28158 100644
--- a/drivers/dma/amba-pl08x.c
+++ b/drivers/dma/amba-pl08x.c
@@ -854,8 +854,10 @@
 	int ret;
 
 	/* Check if we already have a channel */
-	if (plchan->phychan)
-		return 0;
+	if (plchan->phychan) {
+		ch = plchan->phychan;
+		goto got_channel;
+	}
 
 	ch = pl08x_get_phy_channel(pl08x, plchan);
 	if (!ch) {
@@ -880,21 +882,22 @@
 			return -EBUSY;
 		}
 		ch->signal = ret;
-
-		/* Assign the flow control signal to this channel */
-		if (txd->direction == DMA_TO_DEVICE)
-			txd->ccfg |= ch->signal << PL080_CONFIG_DST_SEL_SHIFT;
-		else if (txd->direction == DMA_FROM_DEVICE)
-			txd->ccfg |= ch->signal << PL080_CONFIG_SRC_SEL_SHIFT;
 	}
 
+	plchan->phychan = ch;
 	dev_dbg(&pl08x->adev->dev, "allocated physical channel %d and signal %d for xfer on %s\n",
 		 ch->id,
 		 ch->signal,
 		 plchan->name);
 
+got_channel:
+	/* Assign the flow control signal to this channel */
+	if (txd->direction == DMA_MEM_TO_DEV)
+		txd->ccfg |= ch->signal << PL080_CONFIG_DST_SEL_SHIFT;
+	else if (txd->direction == DMA_DEV_TO_MEM)
+		txd->ccfg |= ch->signal << PL080_CONFIG_SRC_SEL_SHIFT;
+
 	plchan->phychan_hold++;
-	plchan->phychan = ch;
 
 	return 0;
 }
@@ -1102,10 +1105,10 @@
 
 	/* Transfer direction */
 	plchan->runtime_direction = config->direction;
-	if (config->direction == DMA_TO_DEVICE) {
+	if (config->direction == DMA_MEM_TO_DEV) {
 		addr_width = config->dst_addr_width;
 		maxburst = config->dst_maxburst;
-	} else if (config->direction == DMA_FROM_DEVICE) {
+	} else if (config->direction == DMA_DEV_TO_MEM) {
 		addr_width = config->src_addr_width;
 		maxburst = config->src_maxburst;
 	} else {
@@ -1136,7 +1139,7 @@
 	cctl |= burst << PL080_CONTROL_SB_SIZE_SHIFT;
 	cctl |= burst << PL080_CONTROL_DB_SIZE_SHIFT;
 
-	if (plchan->runtime_direction == DMA_FROM_DEVICE) {
+	if (plchan->runtime_direction == DMA_DEV_TO_MEM) {
 		plchan->src_addr = config->src_addr;
 		plchan->src_cctl = pl08x_cctl(cctl) | PL080_CONTROL_DST_INCR |
 			pl08x_select_bus(plchan->cd->periph_buses,
@@ -1152,7 +1155,7 @@
 		"configured channel %s (%s) for %s, data width %d, "
 		"maxburst %d words, LE, CCTL=0x%08x\n",
 		dma_chan_name(chan), plchan->name,
-		(config->direction == DMA_FROM_DEVICE) ? "RX" : "TX",
+		(config->direction == DMA_DEV_TO_MEM) ? "RX" : "TX",
 		addr_width,
 		maxburst,
 		cctl);
@@ -1322,7 +1325,7 @@
 
 static struct dma_async_tx_descriptor *pl08x_prep_slave_sg(
 		struct dma_chan *chan, struct scatterlist *sgl,
-		unsigned int sg_len, enum dma_data_direction direction,
+		unsigned int sg_len, enum dma_transfer_direction direction,
 		unsigned long flags)
 {
 	struct pl08x_dma_chan *plchan = to_pl08x_chan(chan);
@@ -1354,10 +1357,10 @@
 	 */
 	txd->direction = direction;
 
-	if (direction == DMA_TO_DEVICE) {
+	if (direction == DMA_MEM_TO_DEV) {
 		txd->cctl = plchan->dst_cctl;
 		slave_addr = plchan->dst_addr;
-	} else if (direction == DMA_FROM_DEVICE) {
+	} else if (direction == DMA_DEV_TO_MEM) {
 		txd->cctl = plchan->src_cctl;
 		slave_addr = plchan->src_addr;
 	} else {
@@ -1368,10 +1371,10 @@
 	}
 
 	if (plchan->cd->device_fc)
-		tmp = (direction == DMA_TO_DEVICE) ? PL080_FLOW_MEM2PER_PER :
+		tmp = (direction == DMA_MEM_TO_DEV) ? PL080_FLOW_MEM2PER_PER :
 			PL080_FLOW_PER2MEM_PER;
 	else
-		tmp = (direction == DMA_TO_DEVICE) ? PL080_FLOW_MEM2PER :
+		tmp = (direction == DMA_MEM_TO_DEV) ? PL080_FLOW_MEM2PER :
 			PL080_FLOW_PER2MEM;
 
 	txd->ccfg |= tmp << PL080_CONFIG_FLOW_CONTROL_SHIFT;
@@ -1387,7 +1390,7 @@
 		list_add_tail(&dsg->node, &txd->dsg_list);
 
 		dsg->len = sg_dma_len(sg);
-		if (direction == DMA_TO_DEVICE) {
+		if (direction == DMA_MEM_TO_DEV) {
 			dsg->src_addr = sg_phys(sg);
 			dsg->dst_addr = slave_addr;
 		} else {
diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index fcfa0a8..97f87b2 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -23,6 +23,8 @@
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
 
 #include "at_hdmac_regs.h"
 
@@ -660,7 +662,7 @@
  */
 static struct dma_async_tx_descriptor *
 atc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
-		unsigned int sg_len, enum dma_data_direction direction,
+		unsigned int sg_len, enum dma_transfer_direction direction,
 		unsigned long flags)
 {
 	struct at_dma_chan	*atchan = to_at_dma_chan(chan);
@@ -678,7 +680,7 @@
 
 	dev_vdbg(chan2dev(chan), "prep_slave_sg (%d): %s f0x%lx\n",
 			sg_len,
-			direction == DMA_TO_DEVICE ? "TO DEVICE" : "FROM DEVICE",
+			direction == DMA_MEM_TO_DEV ? "TO DEVICE" : "FROM DEVICE",
 			flags);
 
 	if (unlikely(!atslave || !sg_len)) {
@@ -692,7 +694,7 @@
 	ctrlb = ATC_IEN;
 
 	switch (direction) {
-	case DMA_TO_DEVICE:
+	case DMA_MEM_TO_DEV:
 		ctrla |=  ATC_DST_WIDTH(reg_width);
 		ctrlb |=  ATC_DST_ADDR_MODE_FIXED
 			| ATC_SRC_ADDR_MODE_INCR
@@ -725,7 +727,7 @@
 			total_len += len;
 		}
 		break;
-	case DMA_FROM_DEVICE:
+	case DMA_DEV_TO_MEM:
 		ctrla |=  ATC_SRC_WIDTH(reg_width);
 		ctrlb |=  ATC_DST_ADDR_MODE_INCR
 			| ATC_SRC_ADDR_MODE_FIXED
@@ -787,7 +789,7 @@
  */
 static int
 atc_dma_cyclic_check_values(unsigned int reg_width, dma_addr_t buf_addr,
-		size_t period_len, enum dma_data_direction direction)
+		size_t period_len, enum dma_transfer_direction direction)
 {
 	if (period_len > (ATC_BTSIZE_MAX << reg_width))
 		goto err_out;
@@ -795,7 +797,7 @@
 		goto err_out;
 	if (unlikely(buf_addr & ((1 << reg_width) - 1)))
 		goto err_out;
-	if (unlikely(!(direction & (DMA_TO_DEVICE | DMA_FROM_DEVICE))))
+	if (unlikely(!(direction & (DMA_DEV_TO_MEM | DMA_MEM_TO_DEV))))
 		goto err_out;
 
 	return 0;
@@ -810,7 +812,7 @@
 static int
 atc_dma_cyclic_fill_desc(struct at_dma_slave *atslave, struct at_desc *desc,
 		unsigned int period_index, dma_addr_t buf_addr,
-		size_t period_len, enum dma_data_direction direction)
+		size_t period_len, enum dma_transfer_direction direction)
 {
 	u32		ctrla;
 	unsigned int	reg_width = atslave->reg_width;
@@ -822,7 +824,7 @@
 		| period_len >> reg_width;
 
 	switch (direction) {
-	case DMA_TO_DEVICE:
+	case DMA_MEM_TO_DEV:
 		desc->lli.saddr = buf_addr + (period_len * period_index);
 		desc->lli.daddr = atslave->tx_reg;
 		desc->lli.ctrla = ctrla;
@@ -833,7 +835,7 @@
 				| ATC_DIF(AT_DMA_PER_IF);
 		break;
 
-	case DMA_FROM_DEVICE:
+	case DMA_DEV_TO_MEM:
 		desc->lli.saddr = atslave->rx_reg;
 		desc->lli.daddr = buf_addr + (period_len * period_index);
 		desc->lli.ctrla = ctrla;
@@ -861,7 +863,7 @@
  */
 static struct dma_async_tx_descriptor *
 atc_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t buf_addr, size_t buf_len,
-		size_t period_len, enum dma_data_direction direction)
+		size_t period_len, enum dma_transfer_direction direction)
 {
 	struct at_dma_chan	*atchan = to_at_dma_chan(chan);
 	struct at_dma_slave	*atslave = chan->private;
@@ -872,7 +874,7 @@
 	unsigned int		i;
 
 	dev_vdbg(chan2dev(chan), "prep_dma_cyclic: %s buf@0x%08x - %d (%d/%d)\n",
-			direction == DMA_TO_DEVICE ? "TO DEVICE" : "FROM DEVICE",
+			direction == DMA_MEM_TO_DEV ? "TO DEVICE" : "FROM DEVICE",
 			buf_addr,
 			periods, buf_len, period_len);
 
@@ -1175,6 +1177,56 @@
 
 /*--  Module Management  -----------------------------------------------*/
 
+/* cap_mask is a multi-u32 bitfield, fill it with proper C code. */
+static struct at_dma_platform_data at91sam9rl_config = {
+	.nr_channels = 2,
+};
+static struct at_dma_platform_data at91sam9g45_config = {
+	.nr_channels = 8,
+};
+
+#if defined(CONFIG_OF)
+static const struct of_device_id atmel_dma_dt_ids[] = {
+	{
+		.compatible = "atmel,at91sam9rl-dma",
+		.data = &at91sam9rl_config,
+	}, {
+		.compatible = "atmel,at91sam9g45-dma",
+		.data = &at91sam9g45_config,
+	}, {
+		/* sentinel */
+	}
+};
+
+MODULE_DEVICE_TABLE(of, atmel_dma_dt_ids);
+#endif
+
+static const struct platform_device_id atdma_devtypes[] = {
+	{
+		.name = "at91sam9rl_dma",
+		.driver_data = (unsigned long) &at91sam9rl_config,
+	}, {
+		.name = "at91sam9g45_dma",
+		.driver_data = (unsigned long) &at91sam9g45_config,
+	}, {
+		/* sentinel */
+	}
+};
+
+static inline struct at_dma_platform_data * __init at_dma_get_driver_data(
+						struct platform_device *pdev)
+{
+	if (pdev->dev.of_node) {
+		const struct of_device_id *match;
+		match = of_match_node(atmel_dma_dt_ids, pdev->dev.of_node);
+		if (match == NULL)
+			return NULL;
+		return match->data;
+	}
+	return (struct at_dma_platform_data *)
+			platform_get_device_id(pdev)->driver_data;
+}
+
 /**
  * at_dma_off - disable DMA controller
  * @atdma: the Atmel HDAMC device
@@ -1193,18 +1245,23 @@
 
 static int __init at_dma_probe(struct platform_device *pdev)
 {
-	struct at_dma_platform_data *pdata;
 	struct resource		*io;
 	struct at_dma		*atdma;
 	size_t			size;
 	int			irq;
 	int			err;
 	int			i;
+	struct at_dma_platform_data *plat_dat;
 
-	/* get DMA Controller parameters from platform */
-	pdata = pdev->dev.platform_data;
-	if (!pdata || pdata->nr_channels > AT_DMA_MAX_NR_CHANNELS)
-		return -EINVAL;
+	/* setup platform data for each SoC */
+	dma_cap_set(DMA_MEMCPY, at91sam9rl_config.cap_mask);
+	dma_cap_set(DMA_MEMCPY, at91sam9g45_config.cap_mask);
+	dma_cap_set(DMA_SLAVE, at91sam9g45_config.cap_mask);
+
+	/* get DMA parameters from controller type */
+	plat_dat = at_dma_get_driver_data(pdev);
+	if (!plat_dat)
+		return -ENODEV;
 
 	io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!io)
@@ -1215,14 +1272,14 @@
 		return irq;
 
 	size = sizeof(struct at_dma);
-	size += pdata->nr_channels * sizeof(struct at_dma_chan);
+	size += plat_dat->nr_channels * sizeof(struct at_dma_chan);
 	atdma = kzalloc(size, GFP_KERNEL);
 	if (!atdma)
 		return -ENOMEM;
 
-	/* discover transaction capabilites from the platform data */
-	atdma->dma_common.cap_mask = pdata->cap_mask;
-	atdma->all_chan_mask = (1 << pdata->nr_channels) - 1;
+	/* discover transaction capabilities */
+	atdma->dma_common.cap_mask = plat_dat->cap_mask;
+	atdma->all_chan_mask = (1 << plat_dat->nr_channels) - 1;
 
 	size = resource_size(io);
 	if (!request_mem_region(io->start, size, pdev->dev.driver->name)) {
@@ -1268,7 +1325,7 @@
 
 	/* initialize channels related values */
 	INIT_LIST_HEAD(&atdma->dma_common.channels);
-	for (i = 0; i < pdata->nr_channels; i++) {
+	for (i = 0; i < plat_dat->nr_channels; i++) {
 		struct at_dma_chan	*atchan = &atdma->chan[i];
 
 		atchan->chan_common.device = &atdma->dma_common;
@@ -1313,7 +1370,7 @@
 	dev_info(&pdev->dev, "Atmel AHB DMA Controller ( %s%s), %d channels\n",
 	  dma_has_cap(DMA_MEMCPY, atdma->dma_common.cap_mask) ? "cpy " : "",
 	  dma_has_cap(DMA_SLAVE, atdma->dma_common.cap_mask)  ? "slave " : "",
-	  pdata->nr_channels);
+	  plat_dat->nr_channels);
 
 	dma_async_device_register(&atdma->dma_common);
 
@@ -1495,9 +1552,11 @@
 static struct platform_driver at_dma_driver = {
 	.remove		= __exit_p(at_dma_remove),
 	.shutdown	= at_dma_shutdown,
+	.id_table	= atdma_devtypes,
 	.driver = {
 		.name	= "at_hdmac",
 		.pm	= &at_dma_dev_pm_ops,
+		.of_match_table	= of_match_ptr(atmel_dma_dt_ids),
 	},
 };
 
diff --git a/drivers/dma/at_hdmac_regs.h b/drivers/dma/at_hdmac_regs.h
index aa4c9ae..dcaedfc 100644
--- a/drivers/dma/at_hdmac_regs.h
+++ b/drivers/dma/at_hdmac_regs.h
@@ -251,6 +251,7 @@
 /**
  * struct at_dma - internal representation of an Atmel HDMA Controller
  * @chan_common: common dmaengine dma_device object members
+ * @atdma_devtype: identifier of DMA controller compatibility
  * @ch_regs: memory mapped register base
  * @clk: dma controller clock
  * @save_imr: interrupt mask register that is saved on suspend/resume cycle
diff --git a/drivers/dma/coh901318.c b/drivers/dma/coh901318.c
index 4234f41..d65a718 100644
--- a/drivers/dma/coh901318.c
+++ b/drivers/dma/coh901318.c
@@ -39,7 +39,7 @@
 	struct scatterlist *sg;
 	unsigned int sg_len;
 	struct coh901318_lli *lli;
-	enum dma_data_direction dir;
+	enum dma_transfer_direction dir;
 	unsigned long flags;
 	u32 head_config;
 	u32 head_ctrl;
@@ -1034,7 +1034,7 @@
 
 static struct dma_async_tx_descriptor *
 coh901318_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
-			unsigned int sg_len, enum dma_data_direction direction,
+			unsigned int sg_len, enum dma_transfer_direction direction,
 			unsigned long flags)
 {
 	struct coh901318_chan *cohc = to_coh901318_chan(chan);
@@ -1077,7 +1077,7 @@
 	ctrl_last |= cohc->runtime_ctrl;
 	ctrl |= cohc->runtime_ctrl;
 
-	if (direction == DMA_TO_DEVICE) {
+	if (direction == DMA_MEM_TO_DEV) {
 		u32 tx_flags = COH901318_CX_CTRL_PRDD_SOURCE |
 			COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE;
 
@@ -1085,7 +1085,7 @@
 		ctrl_chained |= tx_flags;
 		ctrl_last |= tx_flags;
 		ctrl |= tx_flags;
-	} else if (direction == DMA_FROM_DEVICE) {
+	} else if (direction == DMA_DEV_TO_MEM) {
 		u32 rx_flags = COH901318_CX_CTRL_PRDD_DEST |
 			COH901318_CX_CTRL_DST_ADDR_INC_ENABLE;
 
@@ -1274,11 +1274,11 @@
 	int i = 0;
 
 	/* We only support mem to per or per to mem transfers */
-	if (config->direction == DMA_FROM_DEVICE) {
+	if (config->direction == DMA_DEV_TO_MEM) {
 		addr = config->src_addr;
 		addr_width = config->src_addr_width;
 		maxburst = config->src_maxburst;
-	} else if (config->direction == DMA_TO_DEVICE) {
+	} else if (config->direction == DMA_MEM_TO_DEV) {
 		addr = config->dst_addr;
 		addr_width = config->dst_addr_width;
 		maxburst = config->dst_maxburst;
diff --git a/drivers/dma/coh901318_lli.c b/drivers/dma/coh901318_lli.c
index 9f7e0e6..6c0e2d4 100644
--- a/drivers/dma/coh901318_lli.c
+++ b/drivers/dma/coh901318_lli.c
@@ -7,11 +7,10 @@
  * Author: Per Friden <per.friden@stericsson.com>
  */
 
-#include <linux/dma-mapping.h>
 #include <linux/spinlock.h>
-#include <linux/dmapool.h>
 #include <linux/memory.h>
 #include <linux/gfp.h>
+#include <linux/dmapool.h>
 #include <mach/coh901318.h>
 
 #include "coh901318_lli.h"
@@ -177,18 +176,18 @@
 			  struct coh901318_lli *lli,
 			  dma_addr_t buf, unsigned int size,
 			  dma_addr_t dev_addr, u32 ctrl_chained, u32 ctrl_eom,
-			  enum dma_data_direction dir)
+			  enum dma_transfer_direction dir)
 {
 	int s = size;
 	dma_addr_t src;
 	dma_addr_t dst;
 
 
-	if (dir == DMA_TO_DEVICE) {
+	if (dir == DMA_MEM_TO_DEV) {
 		src = buf;
 		dst = dev_addr;
 
-	} else if (dir == DMA_FROM_DEVICE) {
+	} else if (dir == DMA_DEV_TO_MEM) {
 
 		src = dev_addr;
 		dst = buf;
@@ -215,9 +214,9 @@
 
 		lli = coh901318_lli_next(lli);
 
-		if (dir == DMA_TO_DEVICE)
+		if (dir == DMA_MEM_TO_DEV)
 			src += block_size;
-		else if (dir == DMA_FROM_DEVICE)
+		else if (dir == DMA_DEV_TO_MEM)
 			dst += block_size;
 	}
 
@@ -234,7 +233,7 @@
 		      struct scatterlist *sgl, unsigned int nents,
 		      dma_addr_t dev_addr, u32 ctrl_chained, u32 ctrl,
 		      u32 ctrl_last,
-		      enum dma_data_direction dir, u32 ctrl_irq_mask)
+		      enum dma_transfer_direction dir, u32 ctrl_irq_mask)
 {
 	int i;
 	struct scatterlist *sg;
@@ -249,9 +248,9 @@
 
 	spin_lock(&pool->lock);
 
-	if (dir == DMA_TO_DEVICE)
+	if (dir == DMA_MEM_TO_DEV)
 		dst = dev_addr;
-	else if (dir == DMA_FROM_DEVICE)
+	else if (dir == DMA_DEV_TO_MEM)
 		src = dev_addr;
 	else
 		goto err;
@@ -269,7 +268,7 @@
 			ctrl_sg = ctrl ? ctrl : ctrl_last;
 
 
-		if (dir == DMA_TO_DEVICE)
+		if (dir == DMA_MEM_TO_DEV)
 			/* increment source address */
 			src = sg_phys(sg);
 		else
@@ -293,7 +292,7 @@
 			lli->src_addr = src;
 			lli->dst_addr = dst;
 
-			if (dir == DMA_FROM_DEVICE)
+			if (dir == DMA_DEV_TO_MEM)
 				dst += elem_size;
 			else
 				src += elem_size;
diff --git a/drivers/dma/coh901318_lli.h b/drivers/dma/coh901318_lli.h
index 7a5c809..abff371 100644
--- a/drivers/dma/coh901318_lli.h
+++ b/drivers/dma/coh901318_lli.h
@@ -97,7 +97,7 @@
 			  struct coh901318_lli *lli,
 			  dma_addr_t buf, unsigned int size,
 			  dma_addr_t dev_addr, u32 ctrl_chained, u32 ctrl_last,
-			  enum dma_data_direction dir);
+			  enum dma_transfer_direction dir);
 
 /**
  * coh901318_lli_fill_single() - Prepares the lli:s for dma scatter list transfer
@@ -119,6 +119,6 @@
 		      struct scatterlist *sg, unsigned int nents,
 		      dma_addr_t dev_addr, u32 ctrl_chained,
 		      u32 ctrl, u32 ctrl_last,
-		      enum dma_data_direction dir, u32 ctrl_irq_mask);
+		      enum dma_transfer_direction dir, u32 ctrl_irq_mask);
 
 #endif /* COH901318_LLI_H */
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index b48967b..a6c6051 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -693,12 +693,12 @@
 		!device->device_prep_dma_interrupt);
 	BUG_ON(dma_has_cap(DMA_SG, device->cap_mask) &&
 		!device->device_prep_dma_sg);
-	BUG_ON(dma_has_cap(DMA_SLAVE, device->cap_mask) &&
-		!device->device_prep_slave_sg);
 	BUG_ON(dma_has_cap(DMA_CYCLIC, device->cap_mask) &&
 		!device->device_prep_dma_cyclic);
 	BUG_ON(dma_has_cap(DMA_SLAVE, device->cap_mask) &&
 		!device->device_control);
+	BUG_ON(dma_has_cap(DMA_INTERLEAVE, device->cap_mask) &&
+		!device->device_prep_interleaved_dma);
 
 	BUG_ON(!device->device_alloc_chan_resources);
 	BUG_ON(!device->device_free_chan_resources);
diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
index 9bfd6d3..9b592b0 100644
--- a/drivers/dma/dw_dmac.c
+++ b/drivers/dma/dw_dmac.c
@@ -166,6 +166,38 @@
 	return cookie;
 }
 
+static void dwc_initialize(struct dw_dma_chan *dwc)
+{
+	struct dw_dma *dw = to_dw_dma(dwc->chan.device);
+	struct dw_dma_slave *dws = dwc->chan.private;
+	u32 cfghi = DWC_CFGH_FIFO_MODE;
+	u32 cfglo = DWC_CFGL_CH_PRIOR(dwc->priority);
+
+	if (dwc->initialized == true)
+		return;
+
+	if (dws) {
+		/*
+		 * We need controller-specific data to set up slave
+		 * transfers.
+		 */
+		BUG_ON(!dws->dma_dev || dws->dma_dev != dw->dma.dev);
+
+		cfghi = dws->cfg_hi;
+		cfglo |= dws->cfg_lo & ~DWC_CFGL_CH_PRIOR_MASK;
+	}
+
+	channel_writel(dwc, CFG_LO, cfglo);
+	channel_writel(dwc, CFG_HI, cfghi);
+
+	/* Enable interrupts */
+	channel_set_bit(dw, MASK.XFER, dwc->mask);
+	channel_set_bit(dw, MASK.BLOCK, dwc->mask);
+	channel_set_bit(dw, MASK.ERROR, dwc->mask);
+
+	dwc->initialized = true;
+}
+
 /*----------------------------------------------------------------------*/
 
 /* Called with dwc->lock held and bh disabled */
@@ -189,6 +221,8 @@
 		return;
 	}
 
+	dwc_initialize(dwc);
+
 	channel_writel(dwc, LLP, first->txd.phys);
 	channel_writel(dwc, CTL_LO,
 			DWC_CTLL_LLP_D_EN | DWC_CTLL_LLP_S_EN);
@@ -696,7 +730,7 @@
 
 static struct dma_async_tx_descriptor *
 dwc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
-		unsigned int sg_len, enum dma_data_direction direction,
+		unsigned int sg_len, enum dma_transfer_direction direction,
 		unsigned long flags)
 {
 	struct dw_dma_chan	*dwc = to_dw_dma_chan(chan);
@@ -720,7 +754,7 @@
 	prev = first = NULL;
 
 	switch (direction) {
-	case DMA_TO_DEVICE:
+	case DMA_MEM_TO_DEV:
 		ctllo = (DWC_DEFAULT_CTLLO(chan->private)
 				| DWC_CTLL_DST_WIDTH(reg_width)
 				| DWC_CTLL_DST_FIX
@@ -777,7 +811,7 @@
 				goto slave_sg_todev_fill_desc;
 		}
 		break;
-	case DMA_FROM_DEVICE:
+	case DMA_DEV_TO_MEM:
 		ctllo = (DWC_DEFAULT_CTLLO(chan->private)
 				| DWC_CTLL_SRC_WIDTH(reg_width)
 				| DWC_CTLL_DST_INC
@@ -959,10 +993,7 @@
 	struct dw_dma_chan	*dwc = to_dw_dma_chan(chan);
 	struct dw_dma		*dw = to_dw_dma(chan->device);
 	struct dw_desc		*desc;
-	struct dw_dma_slave	*dws;
 	int			i;
-	u32			cfghi;
-	u32			cfglo;
 	unsigned long		flags;
 
 	dev_vdbg(chan2dev(chan), "alloc_chan_resources\n");
@@ -975,26 +1006,6 @@
 
 	dwc->completed = chan->cookie = 1;
 
-	cfghi = DWC_CFGH_FIFO_MODE;
-	cfglo = 0;
-
-	dws = chan->private;
-	if (dws) {
-		/*
-		 * We need controller-specific data to set up slave
-		 * transfers.
-		 */
-		BUG_ON(!dws->dma_dev || dws->dma_dev != dw->dma.dev);
-
-		cfghi = dws->cfg_hi;
-		cfglo = dws->cfg_lo & ~DWC_CFGL_CH_PRIOR_MASK;
-	}
-
-	cfglo |= DWC_CFGL_CH_PRIOR(dwc->priority);
-
-	channel_writel(dwc, CFG_LO, cfglo);
-	channel_writel(dwc, CFG_HI, cfghi);
-
 	/*
 	 * NOTE: some controllers may have additional features that we
 	 * need to initialize here, like "scatter-gather" (which
@@ -1026,11 +1037,6 @@
 		i = ++dwc->descs_allocated;
 	}
 
-	/* Enable interrupts */
-	channel_set_bit(dw, MASK.XFER, dwc->mask);
-	channel_set_bit(dw, MASK.BLOCK, dwc->mask);
-	channel_set_bit(dw, MASK.ERROR, dwc->mask);
-
 	spin_unlock_irqrestore(&dwc->lock, flags);
 
 	dev_dbg(chan2dev(chan),
@@ -1058,6 +1064,7 @@
 	spin_lock_irqsave(&dwc->lock, flags);
 	list_splice_init(&dwc->free_list, &list);
 	dwc->descs_allocated = 0;
+	dwc->initialized = false;
 
 	/* Disable interrupts */
 	channel_clear_bit(dw, MASK.XFER, dwc->mask);
@@ -1165,7 +1172,7 @@
  */
 struct dw_cyclic_desc *dw_dma_cyclic_prep(struct dma_chan *chan,
 		dma_addr_t buf_addr, size_t buf_len, size_t period_len,
-		enum dma_data_direction direction)
+		enum dma_transfer_direction direction)
 {
 	struct dw_dma_chan		*dwc = to_dw_dma_chan(chan);
 	struct dw_cyclic_desc		*cdesc;
@@ -1206,7 +1213,7 @@
 		goto out_err;
 	if (unlikely(buf_addr & ((1 << reg_width) - 1)))
 		goto out_err;
-	if (unlikely(!(direction & (DMA_TO_DEVICE | DMA_FROM_DEVICE))))
+	if (unlikely(!(direction & (DMA_MEM_TO_DEV | DMA_DEV_TO_MEM))))
 		goto out_err;
 
 	retval = ERR_PTR(-ENOMEM);
@@ -1228,7 +1235,7 @@
 			goto out_err_desc_get;
 
 		switch (direction) {
-		case DMA_TO_DEVICE:
+		case DMA_MEM_TO_DEV:
 			desc->lli.dar = dws->tx_reg;
 			desc->lli.sar = buf_addr + (period_len * i);
 			desc->lli.ctllo = (DWC_DEFAULT_CTLLO(chan->private)
@@ -1239,7 +1246,7 @@
 					| DWC_CTLL_FC(dws->fc)
 					| DWC_CTLL_INT_EN);
 			break;
-		case DMA_FROM_DEVICE:
+		case DMA_DEV_TO_MEM:
 			desc->lli.dar = buf_addr + (period_len * i);
 			desc->lli.sar = dws->rx_reg;
 			desc->lli.ctllo = (DWC_DEFAULT_CTLLO(chan->private)
@@ -1335,6 +1342,8 @@
 
 static void dw_dma_off(struct dw_dma *dw)
 {
+	int i;
+
 	dma_writel(dw, CFG, 0);
 
 	channel_clear_bit(dw, MASK.XFER, dw->all_chan_mask);
@@ -1345,6 +1354,9 @@
 
 	while (dma_readl(dw, CFG) & DW_CFG_DMA_EN)
 		cpu_relax();
+
+	for (i = 0; i < dw->dma.chancnt; i++)
+		dw->chan[i].initialized = false;
 }
 
 static int __init dw_probe(struct platform_device *pdev)
@@ -1533,6 +1545,7 @@
 
 	dw_dma_off(platform_get_drvdata(pdev));
 	clk_disable(dw->clk);
+
 	return 0;
 }
 
diff --git a/drivers/dma/dw_dmac_regs.h b/drivers/dma/dw_dmac_regs.h
index c341951..5eef694 100644
--- a/drivers/dma/dw_dmac_regs.h
+++ b/drivers/dma/dw_dmac_regs.h
@@ -140,6 +140,7 @@
 	u8			mask;
 	u8			priority;
 	bool			paused;
+	bool			initialized;
 
 	spinlock_t		lock;
 
diff --git a/drivers/dma/ep93xx_dma.c b/drivers/dma/ep93xx_dma.c
index b47e2b8..59e7a96 100644
--- a/drivers/dma/ep93xx_dma.c
+++ b/drivers/dma/ep93xx_dma.c
@@ -246,6 +246,9 @@
 static struct ep93xx_dma_desc *
 ep93xx_dma_get_active(struct ep93xx_dma_chan *edmac)
 {
+	if (list_empty(&edmac->active))
+		return NULL;
+
 	return list_first_entry(&edmac->active, struct ep93xx_dma_desc, node);
 }
 
@@ -263,16 +266,22 @@
  */
 static bool ep93xx_dma_advance_active(struct ep93xx_dma_chan *edmac)
 {
+	struct ep93xx_dma_desc *desc;
+
 	list_rotate_left(&edmac->active);
 
 	if (test_bit(EP93XX_DMA_IS_CYCLIC, &edmac->flags))
 		return true;
 
+	desc = ep93xx_dma_get_active(edmac);
+	if (!desc)
+		return false;
+
 	/*
 	 * If txd.cookie is set it means that we are back in the first
 	 * descriptor in the chain and hence done with it.
 	 */
-	return !ep93xx_dma_get_active(edmac)->txd.cookie;
+	return !desc->txd.cookie;
 }
 
 /*
@@ -327,10 +336,16 @@
 
 static void m2p_fill_desc(struct ep93xx_dma_chan *edmac)
 {
-	struct ep93xx_dma_desc *desc = ep93xx_dma_get_active(edmac);
+	struct ep93xx_dma_desc *desc;
 	u32 bus_addr;
 
-	if (ep93xx_dma_chan_direction(&edmac->chan) == DMA_TO_DEVICE)
+	desc = ep93xx_dma_get_active(edmac);
+	if (!desc) {
+		dev_warn(chan2dev(edmac), "M2P: empty descriptor list\n");
+		return;
+	}
+
+	if (ep93xx_dma_chan_direction(&edmac->chan) == DMA_MEM_TO_DEV)
 		bus_addr = desc->src_addr;
 	else
 		bus_addr = desc->dst_addr;
@@ -443,7 +458,7 @@
 		control = (5 << M2M_CONTROL_PWSC_SHIFT);
 		control |= M2M_CONTROL_NO_HDSK;
 
-		if (data->direction == DMA_TO_DEVICE) {
+		if (data->direction == DMA_MEM_TO_DEV) {
 			control |= M2M_CONTROL_DAH;
 			control |= M2M_CONTROL_TM_TX;
 			control |= M2M_CONTROL_RSS_SSPTX;
@@ -459,11 +474,7 @@
 		 * This IDE part is totally untested. Values below are taken
 		 * from the EP93xx Users's Guide and might not be correct.
 		 */
-		control |= M2M_CONTROL_NO_HDSK;
-		control |= M2M_CONTROL_RSS_IDE;
-		control |= M2M_CONTROL_PW_16;
-
-		if (data->direction == DMA_TO_DEVICE) {
+		if (data->direction == DMA_MEM_TO_DEV) {
 			/* Worst case from the UG */
 			control = (3 << M2M_CONTROL_PWSC_SHIFT);
 			control |= M2M_CONTROL_DAH;
@@ -473,6 +484,10 @@
 			control |= M2M_CONTROL_SAH;
 			control |= M2M_CONTROL_TM_RX;
 		}
+
+		control |= M2M_CONTROL_NO_HDSK;
+		control |= M2M_CONTROL_RSS_IDE;
+		control |= M2M_CONTROL_PW_16;
 		break;
 
 	default:
@@ -491,7 +506,13 @@
 
 static void m2m_fill_desc(struct ep93xx_dma_chan *edmac)
 {
-	struct ep93xx_dma_desc *desc = ep93xx_dma_get_active(edmac);
+	struct ep93xx_dma_desc *desc;
+
+	desc = ep93xx_dma_get_active(edmac);
+	if (!desc) {
+		dev_warn(chan2dev(edmac), "M2M: empty descriptor list\n");
+		return;
+	}
 
 	if (edmac->buffer == 0) {
 		writel(desc->src_addr, edmac->regs + M2M_SAR_BASE0);
@@ -669,24 +690,30 @@
 {
 	struct ep93xx_dma_chan *edmac = (struct ep93xx_dma_chan *)data;
 	struct ep93xx_dma_desc *desc, *d;
-	dma_async_tx_callback callback;
-	void *callback_param;
+	dma_async_tx_callback callback = NULL;
+	void *callback_param = NULL;
 	LIST_HEAD(list);
 
 	spin_lock_irq(&edmac->lock);
+	/*
+	 * If dma_terminate_all() was called before we get to run, the active
+	 * list has become empty. If that happens we aren't supposed to do
+	 * anything more than call ep93xx_dma_advance_work().
+	 */
 	desc = ep93xx_dma_get_active(edmac);
-	if (desc->complete) {
-		edmac->last_completed = desc->txd.cookie;
-		list_splice_init(&edmac->active, &list);
+	if (desc) {
+		if (desc->complete) {
+			edmac->last_completed = desc->txd.cookie;
+			list_splice_init(&edmac->active, &list);
+		}
+		callback = desc->txd.callback;
+		callback_param = desc->txd.callback_param;
 	}
 	spin_unlock_irq(&edmac->lock);
 
 	/* Pick up the next descriptor from the queue */
 	ep93xx_dma_advance_work(edmac);
 
-	callback = desc->txd.callback;
-	callback_param = desc->txd.callback_param;
-
 	/* Now we can release all the chained descriptors */
 	list_for_each_entry_safe(desc, d, &list, node) {
 		/*
@@ -706,13 +733,22 @@
 static irqreturn_t ep93xx_dma_interrupt(int irq, void *dev_id)
 {
 	struct ep93xx_dma_chan *edmac = dev_id;
+	struct ep93xx_dma_desc *desc;
 	irqreturn_t ret = IRQ_HANDLED;
 
 	spin_lock(&edmac->lock);
 
+	desc = ep93xx_dma_get_active(edmac);
+	if (!desc) {
+		dev_warn(chan2dev(edmac),
+			 "got interrupt while active list is empty\n");
+		spin_unlock(&edmac->lock);
+		return IRQ_NONE;
+	}
+
 	switch (edmac->edma->hw_interrupt(edmac)) {
 	case INTERRUPT_DONE:
-		ep93xx_dma_get_active(edmac)->complete = true;
+		desc->complete = true;
 		tasklet_schedule(&edmac->tasklet);
 		break;
 
@@ -803,8 +839,8 @@
 			switch (data->port) {
 			case EP93XX_DMA_SSP:
 			case EP93XX_DMA_IDE:
-				if (data->direction != DMA_TO_DEVICE &&
-				    data->direction != DMA_FROM_DEVICE)
+				if (data->direction != DMA_MEM_TO_DEV &&
+				    data->direction != DMA_DEV_TO_MEM)
 					return -EINVAL;
 				break;
 			default:
@@ -952,7 +988,7 @@
  */
 static struct dma_async_tx_descriptor *
 ep93xx_dma_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
-			 unsigned int sg_len, enum dma_data_direction dir,
+			 unsigned int sg_len, enum dma_transfer_direction dir,
 			 unsigned long flags)
 {
 	struct ep93xx_dma_chan *edmac = to_ep93xx_dma_chan(chan);
@@ -988,7 +1024,7 @@
 			goto fail;
 		}
 
-		if (dir == DMA_TO_DEVICE) {
+		if (dir == DMA_MEM_TO_DEV) {
 			desc->src_addr = sg_dma_address(sg);
 			desc->dst_addr = edmac->runtime_addr;
 		} else {
@@ -1032,7 +1068,7 @@
 static struct dma_async_tx_descriptor *
 ep93xx_dma_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t dma_addr,
 			   size_t buf_len, size_t period_len,
-			   enum dma_data_direction dir)
+			   enum dma_transfer_direction dir)
 {
 	struct ep93xx_dma_chan *edmac = to_ep93xx_dma_chan(chan);
 	struct ep93xx_dma_desc *desc, *first;
@@ -1065,7 +1101,7 @@
 			goto fail;
 		}
 
-		if (dir == DMA_TO_DEVICE) {
+		if (dir == DMA_MEM_TO_DEV) {
 			desc->src_addr = dma_addr + offset;
 			desc->dst_addr = edmac->runtime_addr;
 		} else {
@@ -1133,12 +1169,12 @@
 		return -EINVAL;
 
 	switch (config->direction) {
-	case DMA_FROM_DEVICE:
+	case DMA_DEV_TO_MEM:
 		width = config->src_addr_width;
 		addr = config->src_addr;
 		break;
 
-	case DMA_TO_DEVICE:
+	case DMA_MEM_TO_DEV:
 		width = config->dst_addr_width;
 		addr = config->dst_addr;
 		break;
diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index 8a78154..b98070c 100644
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -772,7 +772,7 @@
  */
 static struct dma_async_tx_descriptor *fsl_dma_prep_slave_sg(
 	struct dma_chan *dchan, struct scatterlist *sgl, unsigned int sg_len,
-	enum dma_data_direction direction, unsigned long flags)
+	enum dma_transfer_direction direction, unsigned long flags)
 {
 	/*
 	 * This operation is not supported on the Freescale DMA controller
@@ -819,7 +819,7 @@
 			return -ENXIO;
 
 		/* we set the controller burst size depending on direction */
-		if (config->direction == DMA_TO_DEVICE)
+		if (config->direction == DMA_MEM_TO_DEV)
 			size = config->dst_addr_width * config->dst_maxburst;
 		else
 			size = config->src_addr_width * config->src_maxburst;
diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c
index 4be55f9..e4383ee 100644
--- a/drivers/dma/imx-dma.c
+++ b/drivers/dma/imx-dma.c
@@ -107,7 +107,7 @@
 		imx_dma_disable(imxdmac->imxdma_channel);
 		return 0;
 	case DMA_SLAVE_CONFIG:
-		if (dmaengine_cfg->direction == DMA_FROM_DEVICE) {
+		if (dmaengine_cfg->direction == DMA_DEV_TO_MEM) {
 			imxdmac->per_address = dmaengine_cfg->src_addr;
 			imxdmac->watermark_level = dmaengine_cfg->src_maxburst;
 			imxdmac->word_size = dmaengine_cfg->src_addr_width;
@@ -224,7 +224,7 @@
 
 static struct dma_async_tx_descriptor *imxdma_prep_slave_sg(
 		struct dma_chan *chan, struct scatterlist *sgl,
-		unsigned int sg_len, enum dma_data_direction direction,
+		unsigned int sg_len, enum dma_transfer_direction direction,
 		unsigned long flags)
 {
 	struct imxdma_channel *imxdmac = to_imxdma_chan(chan);
@@ -241,7 +241,7 @@
 		dma_length += sg->length;
 	}
 
-	if (direction == DMA_FROM_DEVICE)
+	if (direction == DMA_DEV_TO_MEM)
 		dmamode = DMA_MODE_READ;
 	else
 		dmamode = DMA_MODE_WRITE;
@@ -271,7 +271,7 @@
 
 static struct dma_async_tx_descriptor *imxdma_prep_dma_cyclic(
 		struct dma_chan *chan, dma_addr_t dma_addr, size_t buf_len,
-		size_t period_len, enum dma_data_direction direction)
+		size_t period_len, enum dma_transfer_direction direction)
 {
 	struct imxdma_channel *imxdmac = to_imxdma_chan(chan);
 	struct imxdma_engine *imxdma = imxdmac->imxdma;
@@ -317,7 +317,7 @@
 	imxdmac->sg_list[periods].page_link =
 		((unsigned long)imxdmac->sg_list | 0x01) & ~0x02;
 
-	if (direction == DMA_FROM_DEVICE)
+	if (direction == DMA_DEV_TO_MEM)
 		dmamode = DMA_MODE_READ;
 	else
 		dmamode = DMA_MODE_WRITE;
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index f993955..a8af379 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -247,7 +247,7 @@
 struct sdma_channel {
 	struct sdma_engine		*sdma;
 	unsigned int			channel;
-	enum dma_data_direction		direction;
+	enum dma_transfer_direction		direction;
 	enum sdma_peripheral_type	peripheral_type;
 	unsigned int			event_id0;
 	unsigned int			event_id1;
@@ -268,6 +268,8 @@
 	struct dma_async_tx_descriptor	desc;
 	dma_cookie_t			last_completed;
 	enum dma_status			status;
+	unsigned int			chn_count;
+	unsigned int			chn_real_count;
 };
 
 #define IMX_DMA_SG_LOOP		(1 << 0)
@@ -503,6 +505,7 @@
 	struct sdma_buffer_descriptor *bd;
 	int i, error = 0;
 
+	sdmac->chn_real_count = 0;
 	/*
 	 * non loop mode. Iterate over all descriptors, collect
 	 * errors and call callback function
@@ -512,6 +515,7 @@
 
 		 if (bd->mode.status & (BD_DONE | BD_RROR))
 			error = -EIO;
+		 sdmac->chn_real_count += bd->mode.count;
 	}
 
 	if (error)
@@ -519,9 +523,9 @@
 	else
 		sdmac->status = DMA_SUCCESS;
 
+	sdmac->last_completed = sdmac->desc.cookie;
 	if (sdmac->desc.callback)
 		sdmac->desc.callback(sdmac->desc.callback_param);
-	sdmac->last_completed = sdmac->desc.cookie;
 }
 
 static void mxc_sdma_handle_channel(struct sdma_channel *sdmac)
@@ -650,7 +654,7 @@
 	struct sdma_buffer_descriptor *bd0 = sdma->channel[0].bd;
 	int ret;
 
-	if (sdmac->direction == DMA_FROM_DEVICE) {
+	if (sdmac->direction == DMA_DEV_TO_MEM) {
 		load_address = sdmac->pc_from_device;
 	} else {
 		load_address = sdmac->pc_to_device;
@@ -832,17 +836,18 @@
 
 static dma_cookie_t sdma_tx_submit(struct dma_async_tx_descriptor *tx)
 {
+	unsigned long flags;
 	struct sdma_channel *sdmac = to_sdma_chan(tx->chan);
 	struct sdma_engine *sdma = sdmac->sdma;
 	dma_cookie_t cookie;
 
-	spin_lock_irq(&sdmac->lock);
+	spin_lock_irqsave(&sdmac->lock, flags);
 
 	cookie = sdma_assign_cookie(sdmac);
 
 	sdma_enable_channel(sdma, sdmac->channel);
 
-	spin_unlock_irq(&sdmac->lock);
+	spin_unlock_irqrestore(&sdmac->lock, flags);
 
 	return cookie;
 }
@@ -911,7 +916,7 @@
 
 static struct dma_async_tx_descriptor *sdma_prep_slave_sg(
 		struct dma_chan *chan, struct scatterlist *sgl,
-		unsigned int sg_len, enum dma_data_direction direction,
+		unsigned int sg_len, enum dma_transfer_direction direction,
 		unsigned long flags)
 {
 	struct sdma_channel *sdmac = to_sdma_chan(chan);
@@ -941,6 +946,7 @@
 		goto err_out;
 	}
 
+	sdmac->chn_count = 0;
 	for_each_sg(sgl, sg, sg_len, i) {
 		struct sdma_buffer_descriptor *bd = &sdmac->bd[i];
 		int param;
@@ -957,6 +963,7 @@
 		}
 
 		bd->mode.count = count;
+		sdmac->chn_count += count;
 
 		if (sdmac->word_size > DMA_SLAVE_BUSWIDTH_4_BYTES) {
 			ret =  -EINVAL;
@@ -1008,7 +1015,7 @@
 
 static struct dma_async_tx_descriptor *sdma_prep_dma_cyclic(
 		struct dma_chan *chan, dma_addr_t dma_addr, size_t buf_len,
-		size_t period_len, enum dma_data_direction direction)
+		size_t period_len, enum dma_transfer_direction direction)
 {
 	struct sdma_channel *sdmac = to_sdma_chan(chan);
 	struct sdma_engine *sdma = sdmac->sdma;
@@ -1093,7 +1100,7 @@
 		sdma_disable_channel(sdmac);
 		return 0;
 	case DMA_SLAVE_CONFIG:
-		if (dmaengine_cfg->direction == DMA_FROM_DEVICE) {
+		if (dmaengine_cfg->direction == DMA_DEV_TO_MEM) {
 			sdmac->per_address = dmaengine_cfg->src_addr;
 			sdmac->watermark_level = dmaengine_cfg->src_maxburst;
 			sdmac->word_size = dmaengine_cfg->src_addr_width;
@@ -1102,6 +1109,7 @@
 			sdmac->watermark_level = dmaengine_cfg->dst_maxburst;
 			sdmac->word_size = dmaengine_cfg->dst_addr_width;
 		}
+		sdmac->direction = dmaengine_cfg->direction;
 		return sdma_config_channel(sdmac);
 	default:
 		return -ENOSYS;
@@ -1119,7 +1127,8 @@
 
 	last_used = chan->cookie;
 
-	dma_set_tx_state(txstate, sdmac->last_completed, last_used, 0);
+	dma_set_tx_state(txstate, sdmac->last_completed, last_used,
+			sdmac->chn_count - sdmac->chn_real_count);
 
 	return sdmac->status;
 }
diff --git a/drivers/dma/intel_mid_dma.c b/drivers/dma/intel_mid_dma.c
index 19a0c64..74f70aa 100644
--- a/drivers/dma/intel_mid_dma.c
+++ b/drivers/dma/intel_mid_dma.c
@@ -280,7 +280,8 @@
  * callbacks but must be called with the lock held.
  */
 static void midc_descriptor_complete(struct intel_mid_dma_chan *midc,
-	       struct intel_mid_dma_desc *desc)
+		struct intel_mid_dma_desc *desc)
+		__releases(&midc->lock) __acquires(&midc->lock)
 {
 	struct dma_async_tx_descriptor	*txd = &desc->txd;
 	dma_async_tx_callback callback_txd = NULL;
@@ -311,6 +312,7 @@
 			pci_pool_free(desc->lli_pool, desc->lli,
 						desc->lli_phys);
 			pci_pool_destroy(desc->lli_pool);
+			desc->lli = NULL;
 		}
 		list_move(&desc->desc_node, &midc->free_list);
 		midc->busy = false;
@@ -395,10 +397,10 @@
 							midc->dma->block_size);
 		/*Populate SAR and DAR values*/
 		sg_phy_addr = sg_phys(sg);
-		if (desc->dirn ==  DMA_TO_DEVICE) {
+		if (desc->dirn ==  DMA_MEM_TO_DEV) {
 			lli_bloc_desc->sar  = sg_phy_addr;
 			lli_bloc_desc->dar  = mids->dma_slave.dst_addr;
-		} else if (desc->dirn ==  DMA_FROM_DEVICE) {
+		} else if (desc->dirn ==  DMA_DEV_TO_MEM) {
 			lli_bloc_desc->sar  = mids->dma_slave.src_addr;
 			lli_bloc_desc->dar  = sg_phy_addr;
 		}
@@ -490,7 +492,9 @@
 
 	ret = dma_async_is_complete(cookie, last_complete, last_used);
 	if (ret != DMA_SUCCESS) {
+		spin_lock_bh(&midc->lock);
 		midc_scan_descriptors(to_middma_device(chan->device), midc);
+		spin_unlock_bh(&midc->lock);
 
 		last_complete = midc->completed;
 		last_used = chan->cookie;
@@ -566,6 +570,7 @@
 			pci_pool_free(desc->lli_pool, desc->lli,
 						desc->lli_phys);
 			pci_pool_destroy(desc->lli_pool);
+			desc->lli = NULL;
 		}
 		list_move(&desc->desc_node, &midc->free_list);
 	}
@@ -632,13 +637,13 @@
 		if (midc->dma->pimr_mask) {
 			cfg_hi.cfgx.protctl = 0x0; /*default value*/
 			cfg_hi.cfgx.fifo_mode = 1;
-			if (mids->dma_slave.direction == DMA_TO_DEVICE) {
+			if (mids->dma_slave.direction == DMA_MEM_TO_DEV) {
 				cfg_hi.cfgx.src_per = 0;
 				if (mids->device_instance == 0)
 					cfg_hi.cfgx.dst_per = 3;
 				if (mids->device_instance == 1)
 					cfg_hi.cfgx.dst_per = 1;
-			} else if (mids->dma_slave.direction == DMA_FROM_DEVICE) {
+			} else if (mids->dma_slave.direction == DMA_DEV_TO_MEM) {
 				if (mids->device_instance == 0)
 					cfg_hi.cfgx.src_per = 2;
 				if (mids->device_instance == 1)
@@ -682,11 +687,11 @@
 		ctl_lo.ctlx.sinc = 0;
 		ctl_lo.ctlx.dinc = 0;
 	} else {
-		if (mids->dma_slave.direction == DMA_TO_DEVICE) {
+		if (mids->dma_slave.direction == DMA_MEM_TO_DEV) {
 			ctl_lo.ctlx.sinc = 0;
 			ctl_lo.ctlx.dinc = 2;
 			ctl_lo.ctlx.tt_fc = 1;
-		} else if (mids->dma_slave.direction == DMA_FROM_DEVICE) {
+		} else if (mids->dma_slave.direction == DMA_DEV_TO_MEM) {
 			ctl_lo.ctlx.sinc = 2;
 			ctl_lo.ctlx.dinc = 0;
 			ctl_lo.ctlx.tt_fc = 2;
@@ -732,7 +737,7 @@
  */
 static struct dma_async_tx_descriptor *intel_mid_dma_prep_slave_sg(
 			struct dma_chan *chan, struct scatterlist *sgl,
-			unsigned int sg_len, enum dma_data_direction direction,
+			unsigned int sg_len, enum dma_transfer_direction direction,
 			unsigned long flags)
 {
 	struct intel_mid_dma_chan *midc = NULL;
@@ -868,7 +873,7 @@
 	pm_runtime_get_sync(&mid->pdev->dev);
 
 	if (mid->state == SUSPENDED) {
-		if (dma_resume(mid->pdev)) {
+		if (dma_resume(&mid->pdev->dev)) {
 			pr_err("ERR_MDMA: resume failed");
 			return -EFAULT;
 		}
@@ -1099,7 +1104,8 @@
 					LNW_PERIPHRAL_MASK_SIZE);
 		if (dma->mask_reg == NULL) {
 			pr_err("ERR_MDMA:Can't map periphral intr space !!\n");
-			return -ENOMEM;
+			err = -ENOMEM;
+			goto err_ioremap;
 		}
 	} else
 		dma->mask_reg = NULL;
@@ -1196,6 +1202,9 @@
 err_engine:
 	free_irq(pdev->irq, dma);
 err_irq:
+	if (dma->mask_reg)
+		iounmap(dma->mask_reg);
+err_ioremap:
 	pci_pool_destroy(dma->dma_pool);
 err_dma_pool:
 	pr_err("ERR_MDMA:setup_dma failed: %d\n", err);
@@ -1337,8 +1346,9 @@
 *
 * This function is called by OS when a power event occurs
 */
-int dma_suspend(struct pci_dev *pci, pm_message_t state)
+static int dma_suspend(struct device *dev)
 {
+	struct pci_dev *pci = to_pci_dev(dev);
 	int i;
 	struct middma_device *device = pci_get_drvdata(pci);
 	pr_debug("MDMA: dma_suspend called\n");
@@ -1362,8 +1372,9 @@
 *
 * This function is called by OS when a power event occurs
 */
-int dma_resume(struct pci_dev *pci)
+int dma_resume(struct device *dev)
 {
+	struct pci_dev *pci = to_pci_dev(dev);
 	int ret;
 	struct middma_device *device = pci_get_drvdata(pci);
 
@@ -1429,6 +1440,8 @@
 	.runtime_suspend = dma_runtime_suspend,
 	.runtime_resume = dma_runtime_resume,
 	.runtime_idle = dma_runtime_idle,
+	.suspend = dma_suspend,
+	.resume = dma_resume,
 };
 
 static struct pci_driver intel_mid_dma_pci_driver = {
@@ -1437,8 +1450,6 @@
 	.probe		=	intel_mid_dma_probe,
 	.remove		=	__devexit_p(intel_mid_dma_remove),
 #ifdef CONFIG_PM
-	.suspend = dma_suspend,
-	.resume = dma_resume,
 	.driver = {
 		.pm = &intel_mid_dma_pm,
 	},
diff --git a/drivers/dma/intel_mid_dma_regs.h b/drivers/dma/intel_mid_dma_regs.h
index aea5ee8..c83d35b 100644
--- a/drivers/dma/intel_mid_dma_regs.h
+++ b/drivers/dma/intel_mid_dma_regs.h
@@ -262,7 +262,7 @@
 	unsigned int			lli_length;
 	unsigned int			current_lli;
 	dma_addr_t			next;
-	enum dma_data_direction		dirn;
+	enum dma_transfer_direction		dirn;
 	enum dma_status			status;
 	enum dma_slave_buswidth		width; /*width of DMA txn*/
 	enum intel_mid_dma_mode		cfg_mode; /*mode configuration*/
@@ -296,6 +296,6 @@
 }
 
 
-int dma_resume(struct pci_dev *pci);
+int dma_resume(struct device *dev);
 
 #endif /*__INTEL_MID_DMAC_REGS_H__*/
diff --git a/drivers/dma/iop-adma.c b/drivers/dma/iop-adma.c
index e03f811..04be90b 100644
--- a/drivers/dma/iop-adma.c
+++ b/drivers/dma/iop-adma.c
@@ -1735,8 +1735,6 @@
 	spin_unlock_bh(&iop_chan->lock);
 }
 
-MODULE_ALIAS("platform:iop-adma");
-
 static struct platform_driver iop_adma_driver = {
 	.probe		= iop_adma_probe,
 	.remove		= __devexit_p(iop_adma_remove),
@@ -1746,19 +1744,9 @@
 	},
 };
 
-static int __init iop_adma_init (void)
-{
-	return platform_driver_register(&iop_adma_driver);
-}
-
-static void __exit iop_adma_exit (void)
-{
-	platform_driver_unregister(&iop_adma_driver);
-	return;
-}
-module_exit(iop_adma_exit);
-module_init(iop_adma_init);
+module_platform_driver(iop_adma_driver);
 
 MODULE_AUTHOR("Intel Corporation");
 MODULE_DESCRIPTION("IOP ADMA Engine Driver");
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:iop-adma");
diff --git a/drivers/dma/ipu/ipu_idmac.c b/drivers/dma/ipu/ipu_idmac.c
index 0e5ef33..6212b16 100644
--- a/drivers/dma/ipu/ipu_idmac.c
+++ b/drivers/dma/ipu/ipu_idmac.c
@@ -312,7 +312,7 @@
 	case IPU_PIX_FMT_RGB565:
 		params->ip.bpp	= 2;
 		params->ip.pfs	= 4;
-		params->ip.npb	= 7;
+		params->ip.npb	= 15;
 		params->ip.sat	= 2;		/* SAT = 32-bit access */
 		params->ip.ofs0	= 0;		/* Red bit offset */
 		params->ip.ofs1	= 5;		/* Green bit offset */
@@ -422,12 +422,6 @@
 	params->pp.nsb = 1;
 }
 
-static void ipu_ch_param_set_burst_size(union chan_param_mem *params,
-					uint16_t burst_pixels)
-{
-	params->pp.npb = burst_pixels - 1;
-}
-
 static void ipu_ch_param_set_buffer(union chan_param_mem *params,
 				    dma_addr_t buf0, dma_addr_t buf1)
 {
@@ -690,23 +684,6 @@
 	ipu_ch_param_set_size(&params, pixel_fmt, width, height, stride_bytes);
 	ipu_ch_param_set_buffer(&params, phyaddr_0, phyaddr_1);
 	ipu_ch_param_set_rotation(&params, rot_mode);
-	/* Some channels (rotation) have restriction on burst length */
-	switch (channel) {
-	case IDMAC_IC_7:	/* Hangs with burst 8, 16, other values
-				   invalid - Table 44-30 */
-/*
-		ipu_ch_param_set_burst_size(&params, 8);
- */
-		break;
-	case IDMAC_SDC_0:
-	case IDMAC_SDC_1:
-		/* In original code only IPU_PIX_FMT_RGB565 was setting burst */
-		ipu_ch_param_set_burst_size(&params, 16);
-		break;
-	case IDMAC_IC_0:
-	default:
-		break;
-	}
 
 	spin_lock_irqsave(&ipu->lock, flags);
 
@@ -1364,7 +1341,7 @@
 /* Allocate and initialise a transfer descriptor. */
 static struct dma_async_tx_descriptor *idmac_prep_slave_sg(struct dma_chan *chan,
 		struct scatterlist *sgl, unsigned int sg_len,
-		enum dma_data_direction direction, unsigned long tx_flags)
+		enum dma_transfer_direction direction, unsigned long tx_flags)
 {
 	struct idmac_channel *ichan = to_idmac_chan(chan);
 	struct idmac_tx_desc *desc = NULL;
@@ -1376,7 +1353,7 @@
 	    chan->chan_id != IDMAC_IC_7)
 		return NULL;
 
-	if (direction != DMA_FROM_DEVICE && direction != DMA_TO_DEVICE) {
+	if (direction != DMA_DEV_TO_MEM && direction != DMA_MEM_TO_DEV) {
 		dev_err(chan->device->dev, "Invalid DMA direction %d!\n", direction);
 		return NULL;
 	}
diff --git a/drivers/dma/mpc512x_dma.c b/drivers/dma/mpc512x_dma.c
index 8ba4edc..4d6d4cf 100644
--- a/drivers/dma/mpc512x_dma.c
+++ b/drivers/dma/mpc512x_dma.c
@@ -835,17 +835,7 @@
 	},
 };
 
-static int __init mpc_dma_init(void)
-{
-	return platform_driver_register(&mpc_dma_driver);
-}
-module_init(mpc_dma_init);
-
-static void __exit mpc_dma_exit(void)
-{
-	platform_driver_unregister(&mpc_dma_driver);
-}
-module_exit(mpc_dma_exit);
+module_platform_driver(mpc_dma_driver);
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Piotr Ziecik <kosmo@semihalf.com>");
diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c
index fc903c0..b06cd4c 100644
--- a/drivers/dma/mxs-dma.c
+++ b/drivers/dma/mxs-dma.c
@@ -44,7 +44,6 @@
 #define HW_APBHX_CTRL0				0x000
 #define BM_APBH_CTRL0_APB_BURST8_EN		(1 << 29)
 #define BM_APBH_CTRL0_APB_BURST_EN		(1 << 28)
-#define BP_APBH_CTRL0_CLKGATE_CHANNEL		8
 #define BP_APBH_CTRL0_RESET_CHANNEL		16
 #define HW_APBHX_CTRL1				0x010
 #define HW_APBHX_CTRL2				0x020
@@ -111,6 +110,7 @@
 	int				chan_irq;
 	struct mxs_dma_ccw		*ccw;
 	dma_addr_t			ccw_phys;
+	int				desc_count;
 	dma_cookie_t			last_completed;
 	enum dma_status			status;
 	unsigned int			flags;
@@ -130,23 +130,6 @@
 	struct mxs_dma_chan		mxs_chans[MXS_DMA_CHANNELS];
 };
 
-static inline void mxs_dma_clkgate(struct mxs_dma_chan *mxs_chan, int enable)
-{
-	struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
-	int chan_id = mxs_chan->chan.chan_id;
-	int set_clr = enable ? MXS_CLR_ADDR : MXS_SET_ADDR;
-
-	/* enable apbh channel clock */
-	if (dma_is_apbh()) {
-		if (apbh_is_old())
-			writel(1 << (chan_id + BP_APBH_CTRL0_CLKGATE_CHANNEL),
-				mxs_dma->base + HW_APBHX_CTRL0 + set_clr);
-		else
-			writel(1 << chan_id,
-				mxs_dma->base + HW_APBHX_CTRL0 + set_clr);
-	}
-}
-
 static void mxs_dma_reset_chan(struct mxs_dma_chan *mxs_chan)
 {
 	struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
@@ -165,9 +148,6 @@
 	struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
 	int chan_id = mxs_chan->chan.chan_id;
 
-	/* clkgate needs to be enabled before writing other registers */
-	mxs_dma_clkgate(mxs_chan, 1);
-
 	/* set cmd_addr up */
 	writel(mxs_chan->ccw_phys,
 		mxs_dma->base + HW_APBHX_CHn_NXTCMDAR(chan_id));
@@ -178,9 +158,6 @@
 
 static void mxs_dma_disable_chan(struct mxs_dma_chan *mxs_chan)
 {
-	/* disable apbh channel clock */
-	mxs_dma_clkgate(mxs_chan, 0);
-
 	mxs_chan->status = DMA_SUCCESS;
 }
 
@@ -268,7 +245,7 @@
 	/*
 	 * When both completion and error of termination bits set at the
 	 * same time, we do not take it as an error.  IOW, it only becomes
-	 * an error we need to handler here in case of ether it's (1) an bus
+	 * an error we need to handle here in case of either it's (1) a bus
 	 * error or (2) a termination error with no completion.
 	 */
 	stat2 = ((stat2 >> MXS_DMA_CHANNELS) & stat2) | /* (1) */
@@ -338,10 +315,7 @@
 	if (ret)
 		goto err_clk;
 
-	/* clkgate needs to be enabled for reset to finish */
-	mxs_dma_clkgate(mxs_chan, 1);
 	mxs_dma_reset_chan(mxs_chan);
-	mxs_dma_clkgate(mxs_chan, 0);
 
 	dma_async_tx_descriptor_init(&mxs_chan->desc, chan);
 	mxs_chan->desc.tx_submit = mxs_dma_tx_submit;
@@ -377,7 +351,7 @@
 
 static struct dma_async_tx_descriptor *mxs_dma_prep_slave_sg(
 		struct dma_chan *chan, struct scatterlist *sgl,
-		unsigned int sg_len, enum dma_data_direction direction,
+		unsigned int sg_len, enum dma_transfer_direction direction,
 		unsigned long append)
 {
 	struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
@@ -386,7 +360,7 @@
 	struct scatterlist *sg;
 	int i, j;
 	u32 *pio;
-	static int idx;
+	int idx = append ? mxs_chan->desc_count : 0;
 
 	if (mxs_chan->status == DMA_IN_PROGRESS && !append)
 		return NULL;
@@ -417,7 +391,7 @@
 		idx = 0;
 	}
 
-	if (direction == DMA_NONE) {
+	if (direction == DMA_TRANS_NONE) {
 		ccw = &mxs_chan->ccw[idx++];
 		pio = (u32 *) sgl;
 
@@ -450,7 +424,7 @@
 			ccw->bits |= CCW_CHAIN;
 			ccw->bits |= CCW_HALT_ON_TERM;
 			ccw->bits |= CCW_TERM_FLUSH;
-			ccw->bits |= BF_CCW(direction == DMA_FROM_DEVICE ?
+			ccw->bits |= BF_CCW(direction == DMA_DEV_TO_MEM ?
 					MXS_DMA_CMD_WRITE : MXS_DMA_CMD_READ,
 					COMMAND);
 
@@ -462,6 +436,7 @@
 			}
 		}
 	}
+	mxs_chan->desc_count = idx;
 
 	return &mxs_chan->desc;
 
@@ -472,7 +447,7 @@
 
 static struct dma_async_tx_descriptor *mxs_dma_prep_dma_cyclic(
 		struct dma_chan *chan, dma_addr_t dma_addr, size_t buf_len,
-		size_t period_len, enum dma_data_direction direction)
+		size_t period_len, enum dma_transfer_direction direction)
 {
 	struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
 	struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
@@ -515,7 +490,7 @@
 		ccw->bits |= CCW_IRQ;
 		ccw->bits |= CCW_HALT_ON_TERM;
 		ccw->bits |= CCW_TERM_FLUSH;
-		ccw->bits |= BF_CCW(direction == DMA_FROM_DEVICE ?
+		ccw->bits |= BF_CCW(direction == DMA_DEV_TO_MEM ?
 				MXS_DMA_CMD_WRITE : MXS_DMA_CMD_READ, COMMAND);
 
 		dma_addr += period_len;
@@ -523,6 +498,7 @@
 
 		i++;
 	}
+	mxs_chan->desc_count = i;
 
 	return &mxs_chan->desc;
 
@@ -539,8 +515,8 @@
 
 	switch (cmd) {
 	case DMA_TERMINATE_ALL:
-		mxs_dma_disable_chan(mxs_chan);
 		mxs_dma_reset_chan(mxs_chan);
+		mxs_dma_disable_chan(mxs_chan);
 		break;
 	case DMA_PAUSE:
 		mxs_dma_pause_chan(mxs_chan);
@@ -580,7 +556,7 @@
 
 	ret = clk_prepare_enable(mxs_dma->clk);
 	if (ret)
-		goto err_out;
+		return ret;
 
 	ret = mxs_reset_block(mxs_dma->base);
 	if (ret)
@@ -604,11 +580,8 @@
 	writel(MXS_DMA_CHANNELS_MASK << MXS_DMA_CHANNELS,
 		mxs_dma->base + HW_APBHX_CTRL1 + MXS_SET_ADDR);
 
-	clk_disable_unprepare(mxs_dma->clk);
-
-	return 0;
-
 err_out:
+	clk_disable_unprepare(mxs_dma->clk);
 	return ret;
 }
 
diff --git a/drivers/dma/pch_dma.c b/drivers/dma/pch_dma.c
index a6d0e3d..823f581 100644
--- a/drivers/dma/pch_dma.c
+++ b/drivers/dma/pch_dma.c
@@ -1,7 +1,7 @@
 /*
  * Topcliff PCH DMA controller driver
  * Copyright (c) 2010 Intel Corporation
- * Copyright (C) 2011 OKI SEMICONDUCTOR CO., LTD.
+ * Copyright (C) 2011 LAPIS Semiconductor Co., Ltd.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -99,7 +99,7 @@
 struct pch_dma_chan {
 	struct dma_chan		chan;
 	void __iomem *membase;
-	enum dma_data_direction	dir;
+	enum dma_transfer_direction dir;
 	struct tasklet_struct	tasklet;
 	unsigned long		err_status;
 
@@ -224,7 +224,7 @@
 		mask_ctl = DMA_MASK_CTL0_MODE & ~(DMA_CTL0_MODE_MASK_BITS <<
 				       (DMA_CTL0_BITS_PER_CH * chan->chan_id));
 		val &= mask_mode;
-		if (pd_chan->dir == DMA_TO_DEVICE)
+		if (pd_chan->dir == DMA_MEM_TO_DEV)
 			val |= 0x1 << (DMA_CTL0_BITS_PER_CH * chan->chan_id +
 				       DMA_CTL0_DIR_SHIFT_BITS);
 		else
@@ -242,7 +242,7 @@
 		mask_ctl = DMA_MASK_CTL2_MODE & ~(DMA_CTL0_MODE_MASK_BITS <<
 						 (DMA_CTL0_BITS_PER_CH * ch));
 		val &= mask_mode;
-		if (pd_chan->dir == DMA_TO_DEVICE)
+		if (pd_chan->dir == DMA_MEM_TO_DEV)
 			val |= 0x1 << (DMA_CTL0_BITS_PER_CH * ch +
 				       DMA_CTL0_DIR_SHIFT_BITS);
 		else
@@ -607,7 +607,7 @@
 
 static struct dma_async_tx_descriptor *pd_prep_slave_sg(struct dma_chan *chan,
 			struct scatterlist *sgl, unsigned int sg_len,
-			enum dma_data_direction direction, unsigned long flags)
+			enum dma_transfer_direction direction, unsigned long flags)
 {
 	struct pch_dma_chan *pd_chan = to_pd_chan(chan);
 	struct pch_dma_slave *pd_slave = chan->private;
@@ -623,9 +623,9 @@
 		return NULL;
 	}
 
-	if (direction == DMA_FROM_DEVICE)
+	if (direction == DMA_DEV_TO_MEM)
 		reg = pd_slave->rx_reg;
-	else if (direction == DMA_TO_DEVICE)
+	else if (direction == DMA_MEM_TO_DEV)
 		reg = pd_slave->tx_reg;
 	else
 		return NULL;
@@ -1018,6 +1018,8 @@
 #define PCI_DEVICE_ID_ML7223_DMA2_4CH	0x800E
 #define PCI_DEVICE_ID_ML7223_DMA3_4CH	0x8017
 #define PCI_DEVICE_ID_ML7223_DMA4_4CH	0x803B
+#define PCI_DEVICE_ID_ML7831_DMA1_8CH	0x8810
+#define PCI_DEVICE_ID_ML7831_DMA2_4CH	0x8815
 
 DEFINE_PCI_DEVICE_TABLE(pch_dma_id_table) = {
 	{ PCI_VDEVICE(INTEL, PCI_DEVICE_ID_EG20T_PCH_DMA_8CH), 8 },
@@ -1030,6 +1032,8 @@
 	{ PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ML7223_DMA2_4CH), 4}, /* Video SPI */
 	{ PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ML7223_DMA3_4CH), 4}, /* Security */
 	{ PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ML7223_DMA4_4CH), 4}, /* FPGA */
+	{ PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ML7831_DMA1_8CH), 8}, /* UART */
+	{ PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ML7831_DMA2_4CH), 4}, /* SPI */
 	{ 0, },
 };
 
@@ -1057,7 +1061,7 @@
 module_init(pch_dma_init);
 module_exit(pch_dma_exit);
 
-MODULE_DESCRIPTION("Intel EG20T PCH / OKI SEMICONDUCTOR ML7213 IOH "
+MODULE_DESCRIPTION("Intel EG20T PCH / LAPIS Semicon ML7213/ML7223/ML7831 IOH "
 		   "DMA controller driver");
 MODULE_AUTHOR("Yong Wang <yong.y.wang@intel.com>");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index 09adcfc..b8ec03e 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -350,14 +350,14 @@
 	case DMA_SLAVE_CONFIG:
 		slave_config = (struct dma_slave_config *)arg;
 
-		if (slave_config->direction == DMA_TO_DEVICE) {
+		if (slave_config->direction == DMA_MEM_TO_DEV) {
 			if (slave_config->dst_addr)
 				pch->fifo_addr = slave_config->dst_addr;
 			if (slave_config->dst_addr_width)
 				pch->burst_sz = __ffs(slave_config->dst_addr_width);
 			if (slave_config->dst_maxburst)
 				pch->burst_len = slave_config->dst_maxburst;
-		} else if (slave_config->direction == DMA_FROM_DEVICE) {
+		} else if (slave_config->direction == DMA_DEV_TO_MEM) {
 			if (slave_config->src_addr)
 				pch->fifo_addr = slave_config->src_addr;
 			if (slave_config->src_addr_width)
@@ -621,7 +621,7 @@
 
 static struct dma_async_tx_descriptor *pl330_prep_dma_cyclic(
 		struct dma_chan *chan, dma_addr_t dma_addr, size_t len,
-		size_t period_len, enum dma_data_direction direction)
+		size_t period_len, enum dma_transfer_direction direction)
 {
 	struct dma_pl330_desc *desc;
 	struct dma_pl330_chan *pch = to_pchan(chan);
@@ -636,14 +636,14 @@
 	}
 
 	switch (direction) {
-	case DMA_TO_DEVICE:
+	case DMA_MEM_TO_DEV:
 		desc->rqcfg.src_inc = 1;
 		desc->rqcfg.dst_inc = 0;
 		desc->req.rqtype = MEMTODEV;
 		src = dma_addr;
 		dst = pch->fifo_addr;
 		break;
-	case DMA_FROM_DEVICE:
+	case DMA_DEV_TO_MEM:
 		desc->rqcfg.src_inc = 0;
 		desc->rqcfg.dst_inc = 1;
 		desc->req.rqtype = DEVTOMEM;
@@ -710,7 +710,7 @@
 
 static struct dma_async_tx_descriptor *
 pl330_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
-		unsigned int sg_len, enum dma_data_direction direction,
+		unsigned int sg_len, enum dma_transfer_direction direction,
 		unsigned long flg)
 {
 	struct dma_pl330_desc *first, *desc = NULL;
@@ -759,7 +759,7 @@
 		else
 			list_add_tail(&desc->node, &first->node);
 
-		if (direction == DMA_TO_DEVICE) {
+		if (direction == DMA_MEM_TO_DEV) {
 			desc->rqcfg.src_inc = 1;
 			desc->rqcfg.dst_inc = 0;
 			desc->req.rqtype = MEMTODEV;
@@ -834,17 +834,7 @@
 
 	amba_set_drvdata(adev, pdmac);
 
-#ifdef CONFIG_PM_RUNTIME
-	/* to use the runtime PM helper functions */
-	pm_runtime_enable(&adev->dev);
-
-	/* enable the power domain */
-	if (pm_runtime_get_sync(&adev->dev)) {
-		dev_err(&adev->dev, "failed to get runtime pm\n");
-		ret = -ENODEV;
-		goto probe_err1;
-	}
-#else
+#ifndef CONFIG_PM_RUNTIME
 	/* enable dma clk */
 	clk_enable(pdmac->clk);
 #endif
@@ -977,10 +967,7 @@
 	res = &adev->res;
 	release_mem_region(res->start, resource_size(res));
 
-#ifdef CONFIG_PM_RUNTIME
-	pm_runtime_put(&adev->dev);
-	pm_runtime_disable(&adev->dev);
-#else
+#ifndef CONFIG_PM_RUNTIME
 	clk_disable(pdmac->clk);
 #endif
 
diff --git a/drivers/dma/shdma.c b/drivers/dma/shdma.c
index 81809c2..54043cd 100644
--- a/drivers/dma/shdma.c
+++ b/drivers/dma/shdma.c
@@ -23,7 +23,6 @@
 #include <linux/interrupt.h>
 #include <linux/dmaengine.h>
 #include <linux/delay.h>
-#include <linux/dma-mapping.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/sh_dma.h>
@@ -57,6 +56,15 @@
 static unsigned long sh_dmae_slave_used[BITS_TO_LONGS(SH_DMA_SLAVE_NUMBER)];
 
 static void sh_dmae_chan_ld_cleanup(struct sh_dmae_chan *sh_chan, bool all);
+static void sh_chan_xfer_ld_queue(struct sh_dmae_chan *sh_chan);
+
+static void chclr_write(struct sh_dmae_chan *sh_dc, u32 data)
+{
+	struct sh_dmae_device *shdev = to_sh_dev(sh_dc);
+
+	__raw_writel(data, shdev->chan_reg +
+		     shdev->pdata->channel[sh_dc->id].chclr_offset);
+}
 
 static void sh_dmae_writel(struct sh_dmae_chan *sh_dc, u32 data, u32 reg)
 {
@@ -129,6 +137,15 @@
 
 	dmaor = dmaor_read(shdev) & ~(DMAOR_NMIF | DMAOR_AE | DMAOR_DME);
 
+	if (shdev->pdata->chclr_present) {
+		int i;
+		for (i = 0; i < shdev->pdata->channel_num; i++) {
+			struct sh_dmae_chan *sh_chan = shdev->chan[i];
+			if (sh_chan)
+				chclr_write(sh_chan, 0);
+		}
+	}
+
 	dmaor_write(shdev, dmaor | shdev->pdata->dmaor_init);
 
 	dmaor = dmaor_read(shdev);
@@ -139,6 +156,10 @@
 		dev_warn(shdev->common.dev, "Can't initialize DMAOR.\n");
 		return -EIO;
 	}
+	if (shdev->pdata->dmaor_init & ~dmaor)
+		dev_warn(shdev->common.dev,
+			 "DMAOR=0x%x hasn't latched the initial value 0x%x.\n",
+			 dmaor, shdev->pdata->dmaor_init);
 	return 0;
 }
 
@@ -259,8 +280,6 @@
 	return 0;
 }
 
-static void sh_chan_xfer_ld_queue(struct sh_dmae_chan *sh_chan);
-
 static dma_cookie_t sh_dmae_tx_submit(struct dma_async_tx_descriptor *tx)
 {
 	struct sh_desc *desc = tx_to_sh_desc(tx), *chunk, *last = desc, *c;
@@ -340,6 +359,8 @@
 				sh_chan_xfer_ld_queue(sh_chan);
 			sh_chan->pm_state = DMAE_PM_ESTABLISHED;
 		}
+	} else {
+		sh_chan->pm_state = DMAE_PM_PENDING;
 	}
 
 	spin_unlock_irq(&sh_chan->desc_lock);
@@ -479,19 +500,19 @@
  * @sh_chan:	DMA channel
  * @flags:	DMA transfer flags
  * @dest:	destination DMA address, incremented when direction equals
- *		DMA_FROM_DEVICE or DMA_BIDIRECTIONAL
+ *		DMA_DEV_TO_MEM
  * @src:	source DMA address, incremented when direction equals
- *		DMA_TO_DEVICE or DMA_BIDIRECTIONAL
+ *		DMA_MEM_TO_DEV
  * @len:	DMA transfer length
  * @first:	if NULL, set to the current descriptor and cookie set to -EBUSY
  * @direction:	needed for slave DMA to decide which address to keep constant,
- *		equals DMA_BIDIRECTIONAL for MEMCPY
+ *		equals DMA_MEM_TO_MEM for MEMCPY
  * Returns 0 or an error
  * Locks: called with desc_lock held
  */
 static struct sh_desc *sh_dmae_add_desc(struct sh_dmae_chan *sh_chan,
 	unsigned long flags, dma_addr_t *dest, dma_addr_t *src, size_t *len,
-	struct sh_desc **first, enum dma_data_direction direction)
+	struct sh_desc **first, enum dma_transfer_direction direction)
 {
 	struct sh_desc *new;
 	size_t copy_size;
@@ -531,9 +552,9 @@
 	new->direction = direction;
 
 	*len -= copy_size;
-	if (direction == DMA_BIDIRECTIONAL || direction == DMA_TO_DEVICE)
+	if (direction == DMA_MEM_TO_MEM || direction == DMA_MEM_TO_DEV)
 		*src += copy_size;
-	if (direction == DMA_BIDIRECTIONAL || direction == DMA_FROM_DEVICE)
+	if (direction == DMA_MEM_TO_MEM || direction == DMA_DEV_TO_MEM)
 		*dest += copy_size;
 
 	return new;
@@ -546,12 +567,12 @@
  * converted to scatter-gather to guarantee consistent locking and a correct
  * list manipulation. For slave DMA direction carries the usual meaning, and,
  * logically, the SG list is RAM and the addr variable contains slave address,
- * e.g., the FIFO I/O register. For MEMCPY direction equals DMA_BIDIRECTIONAL
+ * e.g., the FIFO I/O register. For MEMCPY direction equals DMA_MEM_TO_MEM
  * and the SG list contains only one element and points at the source buffer.
  */
 static struct dma_async_tx_descriptor *sh_dmae_prep_sg(struct sh_dmae_chan *sh_chan,
 	struct scatterlist *sgl, unsigned int sg_len, dma_addr_t *addr,
-	enum dma_data_direction direction, unsigned long flags)
+	enum dma_transfer_direction direction, unsigned long flags)
 {
 	struct scatterlist *sg;
 	struct sh_desc *first = NULL, *new = NULL /* compiler... */;
@@ -592,7 +613,7 @@
 			dev_dbg(sh_chan->dev, "Add SG #%d@%p[%d], dma %llx\n",
 				i, sg, len, (unsigned long long)sg_addr);
 
-			if (direction == DMA_FROM_DEVICE)
+			if (direction == DMA_DEV_TO_MEM)
 				new = sh_dmae_add_desc(sh_chan, flags,
 						&sg_addr, addr, &len, &first,
 						direction);
@@ -646,13 +667,13 @@
 	sg_dma_address(&sg) = dma_src;
 	sg_dma_len(&sg) = len;
 
-	return sh_dmae_prep_sg(sh_chan, &sg, 1, &dma_dest, DMA_BIDIRECTIONAL,
+	return sh_dmae_prep_sg(sh_chan, &sg, 1, &dma_dest, DMA_MEM_TO_MEM,
 			       flags);
 }
 
 static struct dma_async_tx_descriptor *sh_dmae_prep_slave_sg(
 	struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len,
-	enum dma_data_direction direction, unsigned long flags)
+	enum dma_transfer_direction direction, unsigned long flags)
 {
 	struct sh_dmae_slave *param;
 	struct sh_dmae_chan *sh_chan;
@@ -996,7 +1017,7 @@
 	spin_lock_irq(&sh_chan->desc_lock);
 	list_for_each_entry(desc, &sh_chan->ld_queue, node) {
 		if (desc->mark == DESC_SUBMITTED &&
-		    ((desc->direction == DMA_FROM_DEVICE &&
+		    ((desc->direction == DMA_DEV_TO_MEM &&
 		      (desc->hw.dar + desc->hw.tcr) == dar_buf) ||
 		     (desc->hw.sar + desc->hw.tcr) == sar_buf)) {
 			dev_dbg(sh_chan->dev, "done #%d@%p dst %u\n",
@@ -1225,6 +1246,8 @@
 
 	platform_set_drvdata(pdev, shdev);
 
+	shdev->common.dev = &pdev->dev;
+
 	pm_runtime_enable(&pdev->dev);
 	pm_runtime_get_sync(&pdev->dev);
 
@@ -1254,7 +1277,6 @@
 	shdev->common.device_prep_slave_sg = sh_dmae_prep_slave_sg;
 	shdev->common.device_control = sh_dmae_control;
 
-	shdev->common.dev = &pdev->dev;
 	/* Default transfer size of 32 bytes requires 32-byte alignment */
 	shdev->common.copy_align = LOG2_DEFAULT_XFER_SIZE;
 
@@ -1435,22 +1457,17 @@
 #ifdef CONFIG_PM
 static int sh_dmae_suspend(struct device *dev)
 {
-	struct sh_dmae_device *shdev = dev_get_drvdata(dev);
-	int i;
-
-	for (i = 0; i < shdev->pdata->channel_num; i++) {
-		struct sh_dmae_chan *sh_chan = shdev->chan[i];
-		if (sh_chan->descs_allocated)
-			sh_chan->pm_error = pm_runtime_put_sync(dev);
-	}
-
 	return 0;
 }
 
 static int sh_dmae_resume(struct device *dev)
 {
 	struct sh_dmae_device *shdev = dev_get_drvdata(dev);
-	int i;
+	int i, ret;
+
+	ret = sh_dmae_rst(shdev);
+	if (ret < 0)
+		dev_err(dev, "Failed to reset!\n");
 
 	for (i = 0; i < shdev->pdata->channel_num; i++) {
 		struct sh_dmae_chan *sh_chan = shdev->chan[i];
@@ -1459,9 +1476,6 @@
 		if (!sh_chan->descs_allocated)
 			continue;
 
-		if (!sh_chan->pm_error)
-			pm_runtime_get_sync(dev);
-
 		if (param) {
 			const struct sh_dmae_slave_config *cfg = param->config;
 			dmae_set_dmars(sh_chan, cfg->mid_rid);
diff --git a/drivers/dma/sirf-dma.c b/drivers/dma/sirf-dma.c
new file mode 100644
index 0000000..2333810
--- /dev/null
+++ b/drivers/dma/sirf-dma.c
@@ -0,0 +1,707 @@
+/*
+ * DMA controller driver for CSR SiRFprimaII
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#include <linux/module.h>
+#include <linux/dmaengine.h>
+#include <linux/dma-mapping.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/of_irq.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
+#include <linux/sirfsoc_dma.h>
+
+#define SIRFSOC_DMA_DESCRIPTORS                 16
+#define SIRFSOC_DMA_CHANNELS                    16
+
+#define SIRFSOC_DMA_CH_ADDR                     0x00
+#define SIRFSOC_DMA_CH_XLEN                     0x04
+#define SIRFSOC_DMA_CH_YLEN                     0x08
+#define SIRFSOC_DMA_CH_CTRL                     0x0C
+
+#define SIRFSOC_DMA_WIDTH_0                     0x100
+#define SIRFSOC_DMA_CH_VALID                    0x140
+#define SIRFSOC_DMA_CH_INT                      0x144
+#define SIRFSOC_DMA_INT_EN                      0x148
+#define SIRFSOC_DMA_CH_LOOP_CTRL                0x150
+
+#define SIRFSOC_DMA_MODE_CTRL_BIT               4
+#define SIRFSOC_DMA_DIR_CTRL_BIT                5
+
+/* xlen and dma_width register is in 4 bytes boundary */
+#define SIRFSOC_DMA_WORD_LEN			4
+
+struct sirfsoc_dma_desc {
+	struct dma_async_tx_descriptor	desc;
+	struct list_head		node;
+
+	/* SiRFprimaII 2D-DMA parameters */
+
+	int             xlen;           /* DMA xlen */
+	int             ylen;           /* DMA ylen */
+	int             width;          /* DMA width */
+	int             dir;
+	bool            cyclic;         /* is loop DMA? */
+	u32             addr;		/* DMA buffer address */
+};
+
+struct sirfsoc_dma_chan {
+	struct dma_chan			chan;
+	struct list_head		free;
+	struct list_head		prepared;
+	struct list_head		queued;
+	struct list_head		active;
+	struct list_head		completed;
+	dma_cookie_t			completed_cookie;
+	unsigned long			happened_cyclic;
+	unsigned long			completed_cyclic;
+
+	/* Lock for this structure */
+	spinlock_t			lock;
+
+	int				mode;
+};
+
+struct sirfsoc_dma {
+	struct dma_device		dma;
+	struct tasklet_struct		tasklet;
+	struct sirfsoc_dma_chan		channels[SIRFSOC_DMA_CHANNELS];
+	void __iomem			*base;
+	int				irq;
+};
+
+#define DRV_NAME	"sirfsoc_dma"
+
+/* Convert struct dma_chan to struct sirfsoc_dma_chan */
+static inline
+struct sirfsoc_dma_chan *dma_chan_to_sirfsoc_dma_chan(struct dma_chan *c)
+{
+	return container_of(c, struct sirfsoc_dma_chan, chan);
+}
+
+/* Convert struct dma_chan to struct sirfsoc_dma */
+static inline struct sirfsoc_dma *dma_chan_to_sirfsoc_dma(struct dma_chan *c)
+{
+	struct sirfsoc_dma_chan *schan = dma_chan_to_sirfsoc_dma_chan(c);
+	return container_of(schan, struct sirfsoc_dma, channels[c->chan_id]);
+}
+
+/* Execute all queued DMA descriptors */
+static void sirfsoc_dma_execute(struct sirfsoc_dma_chan *schan)
+{
+	struct sirfsoc_dma *sdma = dma_chan_to_sirfsoc_dma(&schan->chan);
+	int cid = schan->chan.chan_id;
+	struct sirfsoc_dma_desc *sdesc = NULL;
+
+	/*
+	 * lock has been held by functions calling this, so we don't hold
+	 * lock again
+	 */
+
+	sdesc = list_first_entry(&schan->queued, struct sirfsoc_dma_desc,
+		node);
+	/* Move the first queued descriptor to active list */
+	list_move_tail(&schan->queued, &schan->active);
+
+	/* Start the DMA transfer */
+	writel_relaxed(sdesc->width, sdma->base + SIRFSOC_DMA_WIDTH_0 +
+		cid * 4);
+	writel_relaxed(cid | (schan->mode << SIRFSOC_DMA_MODE_CTRL_BIT) |
+		(sdesc->dir << SIRFSOC_DMA_DIR_CTRL_BIT),
+		sdma->base + cid * 0x10 + SIRFSOC_DMA_CH_CTRL);
+	writel_relaxed(sdesc->xlen, sdma->base + cid * 0x10 +
+		SIRFSOC_DMA_CH_XLEN);
+	writel_relaxed(sdesc->ylen, sdma->base + cid * 0x10 +
+		SIRFSOC_DMA_CH_YLEN);
+	writel_relaxed(readl_relaxed(sdma->base + SIRFSOC_DMA_INT_EN) |
+		(1 << cid), sdma->base + SIRFSOC_DMA_INT_EN);
+
+	/*
+	 * writel has an implict memory write barrier to make sure data is
+	 * flushed into memory before starting DMA
+	 */
+	writel(sdesc->addr >> 2, sdma->base + cid * 0x10 + SIRFSOC_DMA_CH_ADDR);
+
+	if (sdesc->cyclic) {
+		writel((1 << cid) | 1 << (cid + 16) |
+			readl_relaxed(sdma->base + SIRFSOC_DMA_CH_LOOP_CTRL),
+			sdma->base + SIRFSOC_DMA_CH_LOOP_CTRL);
+		schan->happened_cyclic = schan->completed_cyclic = 0;
+	}
+}
+
+/* Interrupt handler */
+static irqreturn_t sirfsoc_dma_irq(int irq, void *data)
+{
+	struct sirfsoc_dma *sdma = data;
+	struct sirfsoc_dma_chan *schan;
+	struct sirfsoc_dma_desc *sdesc = NULL;
+	u32 is;
+	int ch;
+
+	is = readl(sdma->base + SIRFSOC_DMA_CH_INT);
+	while ((ch = fls(is) - 1) >= 0) {
+		is &= ~(1 << ch);
+		writel_relaxed(1 << ch, sdma->base + SIRFSOC_DMA_CH_INT);
+		schan = &sdma->channels[ch];
+
+		spin_lock(&schan->lock);
+
+		sdesc = list_first_entry(&schan->active, struct sirfsoc_dma_desc,
+			node);
+		if (!sdesc->cyclic) {
+			/* Execute queued descriptors */
+			list_splice_tail_init(&schan->active, &schan->completed);
+			if (!list_empty(&schan->queued))
+				sirfsoc_dma_execute(schan);
+		} else
+			schan->happened_cyclic++;
+
+		spin_unlock(&schan->lock);
+	}
+
+	/* Schedule tasklet */
+	tasklet_schedule(&sdma->tasklet);
+
+	return IRQ_HANDLED;
+}
+
+/* process completed descriptors */
+static void sirfsoc_dma_process_completed(struct sirfsoc_dma *sdma)
+{
+	dma_cookie_t last_cookie = 0;
+	struct sirfsoc_dma_chan *schan;
+	struct sirfsoc_dma_desc *sdesc;
+	struct dma_async_tx_descriptor *desc;
+	unsigned long flags;
+	unsigned long happened_cyclic;
+	LIST_HEAD(list);
+	int i;
+
+	for (i = 0; i < sdma->dma.chancnt; i++) {
+		schan = &sdma->channels[i];
+
+		/* Get all completed descriptors */
+		spin_lock_irqsave(&schan->lock, flags);
+		if (!list_empty(&schan->completed)) {
+			list_splice_tail_init(&schan->completed, &list);
+			spin_unlock_irqrestore(&schan->lock, flags);
+
+			/* Execute callbacks and run dependencies */
+			list_for_each_entry(sdesc, &list, node) {
+				desc = &sdesc->desc;
+
+				if (desc->callback)
+					desc->callback(desc->callback_param);
+
+				last_cookie = desc->cookie;
+				dma_run_dependencies(desc);
+			}
+
+			/* Free descriptors */
+			spin_lock_irqsave(&schan->lock, flags);
+			list_splice_tail_init(&list, &schan->free);
+			schan->completed_cookie = last_cookie;
+			spin_unlock_irqrestore(&schan->lock, flags);
+		} else {
+			/* for cyclic channel, desc is always in active list */
+			sdesc = list_first_entry(&schan->active, struct sirfsoc_dma_desc,
+				node);
+
+			if (!sdesc || (sdesc && !sdesc->cyclic)) {
+				/* without active cyclic DMA */
+				spin_unlock_irqrestore(&schan->lock, flags);
+				continue;
+			}
+
+			/* cyclic DMA */
+			happened_cyclic = schan->happened_cyclic;
+			spin_unlock_irqrestore(&schan->lock, flags);
+
+			desc = &sdesc->desc;
+			while (happened_cyclic != schan->completed_cyclic) {
+				if (desc->callback)
+					desc->callback(desc->callback_param);
+				schan->completed_cyclic++;
+			}
+		}
+	}
+}
+
+/* DMA Tasklet */
+static void sirfsoc_dma_tasklet(unsigned long data)
+{
+	struct sirfsoc_dma *sdma = (void *)data;
+
+	sirfsoc_dma_process_completed(sdma);
+}
+
+/* Submit descriptor to hardware */
+static dma_cookie_t sirfsoc_dma_tx_submit(struct dma_async_tx_descriptor *txd)
+{
+	struct sirfsoc_dma_chan *schan = dma_chan_to_sirfsoc_dma_chan(txd->chan);
+	struct sirfsoc_dma_desc *sdesc;
+	unsigned long flags;
+	dma_cookie_t cookie;
+
+	sdesc = container_of(txd, struct sirfsoc_dma_desc, desc);
+
+	spin_lock_irqsave(&schan->lock, flags);
+
+	/* Move descriptor to queue */
+	list_move_tail(&sdesc->node, &schan->queued);
+
+	/* Update cookie */
+	cookie = schan->chan.cookie + 1;
+	if (cookie <= 0)
+		cookie = 1;
+
+	schan->chan.cookie = cookie;
+	sdesc->desc.cookie = cookie;
+
+	spin_unlock_irqrestore(&schan->lock, flags);
+
+	return cookie;
+}
+
+static int sirfsoc_dma_slave_config(struct sirfsoc_dma_chan *schan,
+	struct dma_slave_config *config)
+{
+	unsigned long flags;
+
+	if ((config->src_addr_width != DMA_SLAVE_BUSWIDTH_4_BYTES) ||
+		(config->dst_addr_width != DMA_SLAVE_BUSWIDTH_4_BYTES))
+		return -EINVAL;
+
+	spin_lock_irqsave(&schan->lock, flags);
+	schan->mode = (config->src_maxburst == 4 ? 1 : 0);
+	spin_unlock_irqrestore(&schan->lock, flags);
+
+	return 0;
+}
+
+static int sirfsoc_dma_terminate_all(struct sirfsoc_dma_chan *schan)
+{
+	struct sirfsoc_dma *sdma = dma_chan_to_sirfsoc_dma(&schan->chan);
+	int cid = schan->chan.chan_id;
+	unsigned long flags;
+
+	writel_relaxed(readl_relaxed(sdma->base + SIRFSOC_DMA_INT_EN) &
+		~(1 << cid), sdma->base + SIRFSOC_DMA_INT_EN);
+	writel_relaxed(1 << cid, sdma->base + SIRFSOC_DMA_CH_VALID);
+
+	writel_relaxed(readl_relaxed(sdma->base + SIRFSOC_DMA_CH_LOOP_CTRL)
+		& ~((1 << cid) | 1 << (cid + 16)),
+			sdma->base + SIRFSOC_DMA_CH_LOOP_CTRL);
+
+	spin_lock_irqsave(&schan->lock, flags);
+	list_splice_tail_init(&schan->active, &schan->free);
+	list_splice_tail_init(&schan->queued, &schan->free);
+	spin_unlock_irqrestore(&schan->lock, flags);
+
+	return 0;
+}
+
+static int sirfsoc_dma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
+	unsigned long arg)
+{
+	struct dma_slave_config *config;
+	struct sirfsoc_dma_chan *schan = dma_chan_to_sirfsoc_dma_chan(chan);
+
+	switch (cmd) {
+	case DMA_TERMINATE_ALL:
+		return sirfsoc_dma_terminate_all(schan);
+	case DMA_SLAVE_CONFIG:
+		config = (struct dma_slave_config *)arg;
+		return sirfsoc_dma_slave_config(schan, config);
+
+	default:
+		break;
+	}
+
+	return -ENOSYS;
+}
+
+/* Alloc channel resources */
+static int sirfsoc_dma_alloc_chan_resources(struct dma_chan *chan)
+{
+	struct sirfsoc_dma *sdma = dma_chan_to_sirfsoc_dma(chan);
+	struct sirfsoc_dma_chan *schan = dma_chan_to_sirfsoc_dma_chan(chan);
+	struct sirfsoc_dma_desc *sdesc;
+	unsigned long flags;
+	LIST_HEAD(descs);
+	int i;
+
+	/* Alloc descriptors for this channel */
+	for (i = 0; i < SIRFSOC_DMA_DESCRIPTORS; i++) {
+		sdesc = kzalloc(sizeof(*sdesc), GFP_KERNEL);
+		if (!sdesc) {
+			dev_notice(sdma->dma.dev, "Memory allocation error. "
+				"Allocated only %u descriptors\n", i);
+			break;
+		}
+
+		dma_async_tx_descriptor_init(&sdesc->desc, chan);
+		sdesc->desc.flags = DMA_CTRL_ACK;
+		sdesc->desc.tx_submit = sirfsoc_dma_tx_submit;
+
+		list_add_tail(&sdesc->node, &descs);
+	}
+
+	/* Return error only if no descriptors were allocated */
+	if (i == 0)
+		return -ENOMEM;
+
+	spin_lock_irqsave(&schan->lock, flags);
+
+	list_splice_tail_init(&descs, &schan->free);
+	spin_unlock_irqrestore(&schan->lock, flags);
+
+	return i;
+}
+
+/* Free channel resources */
+static void sirfsoc_dma_free_chan_resources(struct dma_chan *chan)
+{
+	struct sirfsoc_dma_chan *schan = dma_chan_to_sirfsoc_dma_chan(chan);
+	struct sirfsoc_dma_desc *sdesc, *tmp;
+	unsigned long flags;
+	LIST_HEAD(descs);
+
+	spin_lock_irqsave(&schan->lock, flags);
+
+	/* Channel must be idle */
+	BUG_ON(!list_empty(&schan->prepared));
+	BUG_ON(!list_empty(&schan->queued));
+	BUG_ON(!list_empty(&schan->active));
+	BUG_ON(!list_empty(&schan->completed));
+
+	/* Move data */
+	list_splice_tail_init(&schan->free, &descs);
+
+	spin_unlock_irqrestore(&schan->lock, flags);
+
+	/* Free descriptors */
+	list_for_each_entry_safe(sdesc, tmp, &descs, node)
+		kfree(sdesc);
+}
+
+/* Send pending descriptor to hardware */
+static void sirfsoc_dma_issue_pending(struct dma_chan *chan)
+{
+	struct sirfsoc_dma_chan *schan = dma_chan_to_sirfsoc_dma_chan(chan);
+	unsigned long flags;
+
+	spin_lock_irqsave(&schan->lock, flags);
+
+	if (list_empty(&schan->active) && !list_empty(&schan->queued))
+		sirfsoc_dma_execute(schan);
+
+	spin_unlock_irqrestore(&schan->lock, flags);
+}
+
+/* Check request completion status */
+static enum dma_status
+sirfsoc_dma_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
+	struct dma_tx_state *txstate)
+{
+	struct sirfsoc_dma_chan *schan = dma_chan_to_sirfsoc_dma_chan(chan);
+	unsigned long flags;
+	dma_cookie_t last_used;
+	dma_cookie_t last_complete;
+
+	spin_lock_irqsave(&schan->lock, flags);
+	last_used = schan->chan.cookie;
+	last_complete = schan->completed_cookie;
+	spin_unlock_irqrestore(&schan->lock, flags);
+
+	dma_set_tx_state(txstate, last_complete, last_used, 0);
+	return dma_async_is_complete(cookie, last_complete, last_used);
+}
+
+static struct dma_async_tx_descriptor *sirfsoc_dma_prep_interleaved(
+	struct dma_chan *chan, struct dma_interleaved_template *xt,
+	unsigned long flags)
+{
+	struct sirfsoc_dma *sdma = dma_chan_to_sirfsoc_dma(chan);
+	struct sirfsoc_dma_chan *schan = dma_chan_to_sirfsoc_dma_chan(chan);
+	struct sirfsoc_dma_desc *sdesc = NULL;
+	unsigned long iflags;
+	int ret;
+
+	if ((xt->dir != DMA_MEM_TO_DEV) || (xt->dir != DMA_DEV_TO_MEM)) {
+		ret = -EINVAL;
+		goto err_dir;
+	}
+
+	/* Get free descriptor */
+	spin_lock_irqsave(&schan->lock, iflags);
+	if (!list_empty(&schan->free)) {
+		sdesc = list_first_entry(&schan->free, struct sirfsoc_dma_desc,
+			node);
+		list_del(&sdesc->node);
+	}
+	spin_unlock_irqrestore(&schan->lock, iflags);
+
+	if (!sdesc) {
+		/* try to free completed descriptors */
+		sirfsoc_dma_process_completed(sdma);
+		ret = 0;
+		goto no_desc;
+	}
+
+	/* Place descriptor in prepared list */
+	spin_lock_irqsave(&schan->lock, iflags);
+
+	/*
+	 * Number of chunks in a frame can only be 1 for prima2
+	 * and ylen (number of frame - 1) must be at least 0
+	 */
+	if ((xt->frame_size == 1) && (xt->numf > 0)) {
+		sdesc->cyclic = 0;
+		sdesc->xlen = xt->sgl[0].size / SIRFSOC_DMA_WORD_LEN;
+		sdesc->width = (xt->sgl[0].size + xt->sgl[0].icg) /
+				SIRFSOC_DMA_WORD_LEN;
+		sdesc->ylen = xt->numf - 1;
+		if (xt->dir == DMA_MEM_TO_DEV) {
+			sdesc->addr = xt->src_start;
+			sdesc->dir = 1;
+		} else {
+			sdesc->addr = xt->dst_start;
+			sdesc->dir = 0;
+		}
+
+		list_add_tail(&sdesc->node, &schan->prepared);
+	} else {
+		pr_err("sirfsoc DMA Invalid xfer\n");
+		ret = -EINVAL;
+		goto err_xfer;
+	}
+	spin_unlock_irqrestore(&schan->lock, iflags);
+
+	return &sdesc->desc;
+err_xfer:
+	spin_unlock_irqrestore(&schan->lock, iflags);
+no_desc:
+err_dir:
+	return ERR_PTR(ret);
+}
+
+static struct dma_async_tx_descriptor *
+sirfsoc_dma_prep_cyclic(struct dma_chan *chan, dma_addr_t addr,
+	size_t buf_len, size_t period_len,
+	enum dma_transfer_direction direction)
+{
+	struct sirfsoc_dma_chan *schan = dma_chan_to_sirfsoc_dma_chan(chan);
+	struct sirfsoc_dma_desc *sdesc = NULL;
+	unsigned long iflags;
+
+	/*
+	 * we only support cycle transfer with 2 period
+	 * If the X-length is set to 0, it would be the loop mode.
+	 * The DMA address keeps increasing until reaching the end of a loop
+	 * area whose size is defined by (DMA_WIDTH x (Y_LENGTH + 1)). Then
+	 * the DMA address goes back to the beginning of this area.
+	 * In loop mode, the DMA data region is divided into two parts, BUFA
+	 * and BUFB. DMA controller generates interrupts twice in each loop:
+	 * when the DMA address reaches the end of BUFA or the end of the
+	 * BUFB
+	 */
+	if (buf_len !=  2 * period_len)
+		return ERR_PTR(-EINVAL);
+
+	/* Get free descriptor */
+	spin_lock_irqsave(&schan->lock, iflags);
+	if (!list_empty(&schan->free)) {
+		sdesc = list_first_entry(&schan->free, struct sirfsoc_dma_desc,
+			node);
+		list_del(&sdesc->node);
+	}
+	spin_unlock_irqrestore(&schan->lock, iflags);
+
+	if (!sdesc)
+		return 0;
+
+	/* Place descriptor in prepared list */
+	spin_lock_irqsave(&schan->lock, iflags);
+	sdesc->addr = addr;
+	sdesc->cyclic = 1;
+	sdesc->xlen = 0;
+	sdesc->ylen = buf_len / SIRFSOC_DMA_WORD_LEN - 1;
+	sdesc->width = 1;
+	list_add_tail(&sdesc->node, &schan->prepared);
+	spin_unlock_irqrestore(&schan->lock, iflags);
+
+	return &sdesc->desc;
+}
+
+/*
+ * The DMA controller consists of 16 independent DMA channels.
+ * Each channel is allocated to a different function
+ */
+bool sirfsoc_dma_filter_id(struct dma_chan *chan, void *chan_id)
+{
+	unsigned int ch_nr = (unsigned int) chan_id;
+
+	if (ch_nr == chan->chan_id +
+		chan->device->dev_id * SIRFSOC_DMA_CHANNELS)
+		return true;
+
+	return false;
+}
+EXPORT_SYMBOL(sirfsoc_dma_filter_id);
+
+static int __devinit sirfsoc_dma_probe(struct platform_device *op)
+{
+	struct device_node *dn = op->dev.of_node;
+	struct device *dev = &op->dev;
+	struct dma_device *dma;
+	struct sirfsoc_dma *sdma;
+	struct sirfsoc_dma_chan *schan;
+	struct resource res;
+	ulong regs_start, regs_size;
+	u32 id;
+	int ret, i;
+
+	sdma = devm_kzalloc(dev, sizeof(*sdma), GFP_KERNEL);
+	if (!sdma) {
+		dev_err(dev, "Memory exhausted!\n");
+		return -ENOMEM;
+	}
+
+	if (of_property_read_u32(dn, "cell-index", &id)) {
+		dev_err(dev, "Fail to get DMAC index\n");
+		ret = -ENODEV;
+		goto free_mem;
+	}
+
+	sdma->irq = irq_of_parse_and_map(dn, 0);
+	if (sdma->irq == NO_IRQ) {
+		dev_err(dev, "Error mapping IRQ!\n");
+		ret = -EINVAL;
+		goto free_mem;
+	}
+
+	ret = of_address_to_resource(dn, 0, &res);
+	if (ret) {
+		dev_err(dev, "Error parsing memory region!\n");
+		goto free_mem;
+	}
+
+	regs_start = res.start;
+	regs_size = resource_size(&res);
+
+	sdma->base = devm_ioremap(dev, regs_start, regs_size);
+	if (!sdma->base) {
+		dev_err(dev, "Error mapping memory region!\n");
+		ret = -ENOMEM;
+		goto irq_dispose;
+	}
+
+	ret = devm_request_irq(dev, sdma->irq, &sirfsoc_dma_irq, 0, DRV_NAME,
+		sdma);
+	if (ret) {
+		dev_err(dev, "Error requesting IRQ!\n");
+		ret = -EINVAL;
+		goto unmap_mem;
+	}
+
+	dma = &sdma->dma;
+	dma->dev = dev;
+	dma->chancnt = SIRFSOC_DMA_CHANNELS;
+
+	dma->device_alloc_chan_resources = sirfsoc_dma_alloc_chan_resources;
+	dma->device_free_chan_resources = sirfsoc_dma_free_chan_resources;
+	dma->device_issue_pending = sirfsoc_dma_issue_pending;
+	dma->device_control = sirfsoc_dma_control;
+	dma->device_tx_status = sirfsoc_dma_tx_status;
+	dma->device_prep_interleaved_dma = sirfsoc_dma_prep_interleaved;
+	dma->device_prep_dma_cyclic = sirfsoc_dma_prep_cyclic;
+
+	INIT_LIST_HEAD(&dma->channels);
+	dma_cap_set(DMA_SLAVE, dma->cap_mask);
+	dma_cap_set(DMA_CYCLIC, dma->cap_mask);
+	dma_cap_set(DMA_INTERLEAVE, dma->cap_mask);
+	dma_cap_set(DMA_PRIVATE, dma->cap_mask);
+
+	for (i = 0; i < dma->chancnt; i++) {
+		schan = &sdma->channels[i];
+
+		schan->chan.device = dma;
+		schan->chan.cookie = 1;
+		schan->completed_cookie = schan->chan.cookie;
+
+		INIT_LIST_HEAD(&schan->free);
+		INIT_LIST_HEAD(&schan->prepared);
+		INIT_LIST_HEAD(&schan->queued);
+		INIT_LIST_HEAD(&schan->active);
+		INIT_LIST_HEAD(&schan->completed);
+
+		spin_lock_init(&schan->lock);
+		list_add_tail(&schan->chan.device_node, &dma->channels);
+	}
+
+	tasklet_init(&sdma->tasklet, sirfsoc_dma_tasklet, (unsigned long)sdma);
+
+	/* Register DMA engine */
+	dev_set_drvdata(dev, sdma);
+	ret = dma_async_device_register(dma);
+	if (ret)
+		goto free_irq;
+
+	dev_info(dev, "initialized SIRFSOC DMAC driver\n");
+
+	return 0;
+
+free_irq:
+	devm_free_irq(dev, sdma->irq, sdma);
+irq_dispose:
+	irq_dispose_mapping(sdma->irq);
+unmap_mem:
+	iounmap(sdma->base);
+free_mem:
+	devm_kfree(dev, sdma);
+	return ret;
+}
+
+static int __devexit sirfsoc_dma_remove(struct platform_device *op)
+{
+	struct device *dev = &op->dev;
+	struct sirfsoc_dma *sdma = dev_get_drvdata(dev);
+
+	dma_async_device_unregister(&sdma->dma);
+	devm_free_irq(dev, sdma->irq, sdma);
+	irq_dispose_mapping(sdma->irq);
+	iounmap(sdma->base);
+	devm_kfree(dev, sdma);
+	return 0;
+}
+
+static struct of_device_id sirfsoc_dma_match[] = {
+	{ .compatible = "sirf,prima2-dmac", },
+	{},
+};
+
+static struct platform_driver sirfsoc_dma_driver = {
+	.probe		= sirfsoc_dma_probe,
+	.remove		= __devexit_p(sirfsoc_dma_remove),
+	.driver = {
+		.name = DRV_NAME,
+		.owner = THIS_MODULE,
+		.of_match_table	= sirfsoc_dma_match,
+	},
+};
+
+module_platform_driver(sirfsoc_dma_driver);
+
+MODULE_AUTHOR("Rongjun Ying <rongjun.ying@csr.com>, "
+	"Barry Song <baohua.song@csr.com>");
+MODULE_DESCRIPTION("SIRFSOC DMA control driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 13259ca..cc5ecbc 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -14,6 +14,8 @@
 #include <linux/platform_device.h>
 #include <linux/clk.h>
 #include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
 #include <linux/err.h>
 #include <linux/amba/bus.h>
 
@@ -32,6 +34,9 @@
 /* Maximum iterations taken before giving up suspending a channel */
 #define D40_SUSPEND_MAX_IT 500
 
+/* Milliseconds */
+#define DMA40_AUTOSUSPEND_DELAY	100
+
 /* Hardware requirement on LCLA alignment */
 #define LCLA_ALIGNMENT 0x40000
 
@@ -62,6 +67,55 @@
 	D40_DMA_SUSPENDED	= 3
 };
 
+/*
+ * These are the registers that has to be saved and later restored
+ * when the DMA hw is powered off.
+ * TODO: Add save/restore of D40_DREG_GCC on dma40 v3 or later, if that works.
+ */
+static u32 d40_backup_regs[] = {
+	D40_DREG_LCPA,
+	D40_DREG_LCLA,
+	D40_DREG_PRMSE,
+	D40_DREG_PRMSO,
+	D40_DREG_PRMOE,
+	D40_DREG_PRMOO,
+};
+
+#define BACKUP_REGS_SZ ARRAY_SIZE(d40_backup_regs)
+
+/* TODO: Check if all these registers have to be saved/restored on dma40 v3 */
+static u32 d40_backup_regs_v3[] = {
+	D40_DREG_PSEG1,
+	D40_DREG_PSEG2,
+	D40_DREG_PSEG3,
+	D40_DREG_PSEG4,
+	D40_DREG_PCEG1,
+	D40_DREG_PCEG2,
+	D40_DREG_PCEG3,
+	D40_DREG_PCEG4,
+	D40_DREG_RSEG1,
+	D40_DREG_RSEG2,
+	D40_DREG_RSEG3,
+	D40_DREG_RSEG4,
+	D40_DREG_RCEG1,
+	D40_DREG_RCEG2,
+	D40_DREG_RCEG3,
+	D40_DREG_RCEG4,
+};
+
+#define BACKUP_REGS_SZ_V3 ARRAY_SIZE(d40_backup_regs_v3)
+
+static u32 d40_backup_regs_chan[] = {
+	D40_CHAN_REG_SSCFG,
+	D40_CHAN_REG_SSELT,
+	D40_CHAN_REG_SSPTR,
+	D40_CHAN_REG_SSLNK,
+	D40_CHAN_REG_SDCFG,
+	D40_CHAN_REG_SDELT,
+	D40_CHAN_REG_SDPTR,
+	D40_CHAN_REG_SDLNK,
+};
+
 /**
  * struct d40_lli_pool - Structure for keeping LLIs in memory
  *
@@ -96,7 +150,7 @@
  * during a transfer.
  * @node: List entry.
  * @is_in_client_list: true if the client owns this descriptor.
- * the previous one.
+ * @cyclic: true if this is a cyclic job
  *
  * This descriptor is used for both logical and physical transfers.
  */
@@ -143,6 +197,7 @@
  * channels.
  *
  * @lock: A lock protection this entity.
+ * @reserved: True if used by secure world or otherwise.
  * @num: The physical channel number of this entity.
  * @allocated_src: Bit mapped to show which src event line's are mapped to
  * this physical channel. Can also be free or physically allocated.
@@ -152,6 +207,7 @@
  */
 struct d40_phy_res {
 	spinlock_t lock;
+	bool	   reserved;
 	int	   num;
 	u32	   allocated_src;
 	u32	   allocated_dst;
@@ -185,7 +241,6 @@
  * @src_def_cfg: Default cfg register setting for src.
  * @dst_def_cfg: Default cfg register setting for dst.
  * @log_def: Default logical channel settings.
- * @lcla: Space for one dst src pair for logical channel transfers.
  * @lcpa: Pointer to dst and src lcpa settings.
  * @runtime_addr: runtime configured address.
  * @runtime_direction: runtime configured direction.
@@ -217,7 +272,7 @@
 	struct d40_log_lli_full		*lcpa;
 	/* Runtime reconfiguration */
 	dma_addr_t			runtime_addr;
-	enum dma_data_direction		runtime_direction;
+	enum dma_transfer_direction	runtime_direction;
 };
 
 /**
@@ -241,6 +296,7 @@
  * @dma_both: dma_device channels that can do both memcpy and slave transfers.
  * @dma_slave: dma_device channels that can do only do slave transfers.
  * @dma_memcpy: dma_device channels that can do only do memcpy transfers.
+ * @phy_chans: Room for all possible physical channels in system.
  * @log_chans: Room for all possible logical channels in system.
  * @lookup_log_chans: Used to map interrupt number to logical channel. Points
  * to log_chans entries.
@@ -248,12 +304,20 @@
  * to phy_chans entries.
  * @plat_data: Pointer to provided platform_data which is the driver
  * configuration.
+ * @lcpa_regulator: Pointer to hold the regulator for the esram bank for lcla.
  * @phy_res: Vector containing all physical channels.
  * @lcla_pool: lcla pool settings and data.
  * @lcpa_base: The virtual mapped address of LCPA.
  * @phy_lcpa: The physical address of the LCPA.
  * @lcpa_size: The size of the LCPA area.
  * @desc_slab: cache for descriptors.
+ * @reg_val_backup: Here the values of some hardware registers are stored
+ * before the DMA is powered off. They are restored when the power is back on.
+ * @reg_val_backup_v3: Backup of registers that only exits on dma40 v3 and
+ * later.
+ * @reg_val_backup_chan: Backup data for standard channel parameter registers.
+ * @gcc_pwr_off_mask: Mask to maintain the channels that can be turned off.
+ * @initialized: true if the dma has been initialized
  */
 struct d40_base {
 	spinlock_t			 interrupt_lock;
@@ -275,6 +339,7 @@
 	struct d40_chan			**lookup_log_chans;
 	struct d40_chan			**lookup_phy_chans;
 	struct stedma40_platform_data	 *plat_data;
+	struct regulator		 *lcpa_regulator;
 	/* Physical half channels */
 	struct d40_phy_res		 *phy_res;
 	struct d40_lcla_pool		  lcla_pool;
@@ -282,6 +347,11 @@
 	dma_addr_t			  phy_lcpa;
 	resource_size_t			  lcpa_size;
 	struct kmem_cache		 *desc_slab;
+	u32				  reg_val_backup[BACKUP_REGS_SZ];
+	u32				  reg_val_backup_v3[BACKUP_REGS_SZ_V3];
+	u32				 *reg_val_backup_chan;
+	u16				  gcc_pwr_off_mask;
+	bool				  initialized;
 };
 
 /**
@@ -479,13 +549,14 @@
 		struct d40_desc *d;
 		struct d40_desc *_d;
 
-		list_for_each_entry_safe(d, _d, &d40c->client, node)
+		list_for_each_entry_safe(d, _d, &d40c->client, node) {
 			if (async_tx_test_ack(&d->txd)) {
 				d40_desc_remove(d);
 				desc = d;
 				memset(desc, 0, sizeof(*desc));
 				break;
 			}
+		}
 	}
 
 	if (!desc)
@@ -536,6 +607,7 @@
 	bool cyclic = desc->cyclic;
 	int curr_lcla = -EINVAL;
 	int first_lcla = 0;
+	bool use_esram_lcla = chan->base->plat_data->use_esram_lcla;
 	bool linkback;
 
 	/*
@@ -608,11 +680,16 @@
 				       &lli->src[lli_current],
 				       next_lcla, flags);
 
-		dma_sync_single_range_for_device(chan->base->dev,
-					pool->dma_addr, lcla_offset,
-					2 * sizeof(struct d40_log_lli),
-					DMA_TO_DEVICE);
-
+		/*
+		 * Cache maintenance is not needed if lcla is
+		 * mapped in esram
+		 */
+		if (!use_esram_lcla) {
+			dma_sync_single_range_for_device(chan->base->dev,
+						pool->dma_addr, lcla_offset,
+						2 * sizeof(struct d40_log_lli),
+						DMA_TO_DEVICE);
+		}
 		curr_lcla = next_lcla;
 
 		if (curr_lcla == -EINVAL || curr_lcla == first_lcla) {
@@ -740,7 +817,61 @@
 	return len;
 }
 
-/* Support functions for logical channels */
+
+#ifdef CONFIG_PM
+static void dma40_backup(void __iomem *baseaddr, u32 *backup,
+			 u32 *regaddr, int num, bool save)
+{
+	int i;
+
+	for (i = 0; i < num; i++) {
+		void __iomem *addr = baseaddr + regaddr[i];
+
+		if (save)
+			backup[i] = readl_relaxed(addr);
+		else
+			writel_relaxed(backup[i], addr);
+	}
+}
+
+static void d40_save_restore_registers(struct d40_base *base, bool save)
+{
+	int i;
+
+	/* Save/Restore channel specific registers */
+	for (i = 0; i < base->num_phy_chans; i++) {
+		void __iomem *addr;
+		int idx;
+
+		if (base->phy_res[i].reserved)
+			continue;
+
+		addr = base->virtbase + D40_DREG_PCBASE + i * D40_DREG_PCDELTA;
+		idx = i * ARRAY_SIZE(d40_backup_regs_chan);
+
+		dma40_backup(addr, &base->reg_val_backup_chan[idx],
+			     d40_backup_regs_chan,
+			     ARRAY_SIZE(d40_backup_regs_chan),
+			     save);
+	}
+
+	/* Save/Restore global registers */
+	dma40_backup(base->virtbase, base->reg_val_backup,
+		     d40_backup_regs, ARRAY_SIZE(d40_backup_regs),
+		     save);
+
+	/* Save/Restore registers only existing on dma40 v3 and later */
+	if (base->rev >= 3)
+		dma40_backup(base->virtbase, base->reg_val_backup_v3,
+			     d40_backup_regs_v3,
+			     ARRAY_SIZE(d40_backup_regs_v3),
+			     save);
+}
+#else
+static void d40_save_restore_registers(struct d40_base *base, bool save)
+{
+}
+#endif
 
 static int d40_channel_execute_command(struct d40_chan *d40c,
 				       enum d40_command command)
@@ -973,6 +1104,10 @@
 		/* Set LIDX for lcla */
 		writel(lidx, chanbase + D40_CHAN_REG_SSELT);
 		writel(lidx, chanbase + D40_CHAN_REG_SDELT);
+
+		/* Clear LNK which will be used by d40_chan_has_events() */
+		writel(0, chanbase + D40_CHAN_REG_SSLNK);
+		writel(0, chanbase + D40_CHAN_REG_SDLNK);
 	}
 }
 
@@ -1013,6 +1148,7 @@
 	if (!d40c->busy)
 		return 0;
 
+	pm_runtime_get_sync(d40c->base->dev);
 	spin_lock_irqsave(&d40c->lock, flags);
 
 	res = d40_channel_execute_command(d40c, D40_DMA_SUSPEND_REQ);
@@ -1025,7 +1161,8 @@
 								  D40_DMA_RUN);
 		}
 	}
-
+	pm_runtime_mark_last_busy(d40c->base->dev);
+	pm_runtime_put_autosuspend(d40c->base->dev);
 	spin_unlock_irqrestore(&d40c->lock, flags);
 	return res;
 }
@@ -1039,7 +1176,7 @@
 		return 0;
 
 	spin_lock_irqsave(&d40c->lock, flags);
-
+	pm_runtime_get_sync(d40c->base->dev);
 	if (d40c->base->rev == 0)
 		if (chan_is_logical(d40c)) {
 			res = d40_channel_execute_command(d40c,
@@ -1057,6 +1194,8 @@
 	}
 
 no_suspend:
+	pm_runtime_mark_last_busy(d40c->base->dev);
+	pm_runtime_put_autosuspend(d40c->base->dev);
 	spin_unlock_irqrestore(&d40c->lock, flags);
 	return res;
 }
@@ -1129,7 +1268,10 @@
 	d40d = d40_first_queued(d40c);
 
 	if (d40d != NULL) {
-		d40c->busy = true;
+		if (!d40c->busy)
+			d40c->busy = true;
+
+		pm_runtime_get_sync(d40c->base->dev);
 
 		/* Remove from queue */
 		d40_desc_remove(d40d);
@@ -1190,6 +1332,8 @@
 
 		if (d40_queue_start(d40c) == NULL)
 			d40c->busy = false;
+		pm_runtime_mark_last_busy(d40c->base->dev);
+		pm_runtime_put_autosuspend(d40c->base->dev);
 	}
 
 	d40c->pending_tx++;
@@ -1405,11 +1549,16 @@
 	return res;
 }
 
-static bool d40_alloc_mask_set(struct d40_phy_res *phy, bool is_src,
-			       int log_event_line, bool is_log)
+static bool d40_alloc_mask_set(struct d40_phy_res *phy,
+			       bool is_src, int log_event_line, bool is_log,
+			       bool *first_user)
 {
 	unsigned long flags;
 	spin_lock_irqsave(&phy->lock, flags);
+
+	*first_user = ((phy->allocated_src | phy->allocated_dst)
+			== D40_ALLOC_FREE);
+
 	if (!is_log) {
 		/* Physical interrupts are masked per physical full channel */
 		if (phy->allocated_src == D40_ALLOC_FREE &&
@@ -1490,7 +1639,7 @@
 	return is_free;
 }
 
-static int d40_allocate_channel(struct d40_chan *d40c)
+static int d40_allocate_channel(struct d40_chan *d40c, bool *first_phy_user)
 {
 	int dev_type;
 	int event_group;
@@ -1526,7 +1675,8 @@
 			for (i = 0; i < d40c->base->num_phy_chans; i++) {
 
 				if (d40_alloc_mask_set(&phys[i], is_src,
-						       0, is_log))
+						       0, is_log,
+						       first_phy_user))
 					goto found_phy;
 			}
 		} else
@@ -1536,7 +1686,8 @@
 					if (d40_alloc_mask_set(&phys[i],
 							       is_src,
 							       0,
-							       is_log))
+							       is_log,
+							       first_phy_user))
 						goto found_phy;
 				}
 			}
@@ -1552,6 +1703,25 @@
 	/* Find logical channel */
 	for (j = 0; j < d40c->base->num_phy_chans; j += 8) {
 		int phy_num = j + event_group * 2;
+
+		if (d40c->dma_cfg.use_fixed_channel) {
+			i = d40c->dma_cfg.phy_channel;
+
+			if ((i != phy_num) && (i != phy_num + 1)) {
+				dev_err(chan2dev(d40c),
+					"invalid fixed phy channel %d\n", i);
+				return -EINVAL;
+			}
+
+			if (d40_alloc_mask_set(&phys[i], is_src, event_line,
+					       is_log, first_phy_user))
+				goto found_log;
+
+			dev_err(chan2dev(d40c),
+				"could not allocate fixed phy channel %d\n", i);
+			return -EINVAL;
+		}
+
 		/*
 		 * Spread logical channels across all available physical rather
 		 * than pack every logical channel at the first available phy
@@ -1560,13 +1730,15 @@
 		if (is_src) {
 			for (i = phy_num; i < phy_num + 2; i++) {
 				if (d40_alloc_mask_set(&phys[i], is_src,
-						       event_line, is_log))
+						       event_line, is_log,
+						       first_phy_user))
 					goto found_log;
 			}
 		} else {
 			for (i = phy_num + 1; i >= phy_num; i--) {
 				if (d40_alloc_mask_set(&phys[i], is_src,
-						       event_line, is_log))
+						       event_line, is_log,
+						       first_phy_user))
 					goto found_log;
 			}
 		}
@@ -1643,10 +1815,11 @@
 		return -EINVAL;
 	}
 
+	pm_runtime_get_sync(d40c->base->dev);
 	res = d40_channel_execute_command(d40c, D40_DMA_SUSPEND_REQ);
 	if (res) {
 		chan_err(d40c, "suspend failed\n");
-		return res;
+		goto out;
 	}
 
 	if (chan_is_logical(d40c)) {
@@ -1664,13 +1837,11 @@
 			if (d40_chan_has_events(d40c)) {
 				res = d40_channel_execute_command(d40c,
 								  D40_DMA_RUN);
-				if (res) {
+				if (res)
 					chan_err(d40c,
 						"Executing RUN command\n");
-					return res;
-				}
 			}
-			return 0;
+			goto out;
 		}
 	} else {
 		(void) d40_alloc_mask_free(phy, is_src, 0);
@@ -1680,13 +1851,23 @@
 	res = d40_channel_execute_command(d40c, D40_DMA_STOP);
 	if (res) {
 		chan_err(d40c, "Failed to stop channel\n");
-		return res;
+		goto out;
 	}
+
+	if (d40c->busy) {
+		pm_runtime_mark_last_busy(d40c->base->dev);
+		pm_runtime_put_autosuspend(d40c->base->dev);
+	}
+
+	d40c->busy = false;
 	d40c->phy_chan = NULL;
 	d40c->configured = false;
 	d40c->base->lookup_phy_chans[phy->num] = NULL;
+out:
 
-	return 0;
+	pm_runtime_mark_last_busy(d40c->base->dev);
+	pm_runtime_put_autosuspend(d40c->base->dev);
+	return res;
 }
 
 static bool d40_is_paused(struct d40_chan *d40c)
@@ -1855,7 +2036,7 @@
 }
 
 static dma_addr_t
-d40_get_dev_addr(struct d40_chan *chan, enum dma_data_direction direction)
+d40_get_dev_addr(struct d40_chan *chan, enum dma_transfer_direction direction)
 {
 	struct stedma40_platform_data *plat = chan->base->plat_data;
 	struct stedma40_chan_cfg *cfg = &chan->dma_cfg;
@@ -1864,9 +2045,9 @@
 	if (chan->runtime_addr)
 		return chan->runtime_addr;
 
-	if (direction == DMA_FROM_DEVICE)
+	if (direction == DMA_DEV_TO_MEM)
 		addr = plat->dev_rx[cfg->src_dev_type];
-	else if (direction == DMA_TO_DEVICE)
+	else if (direction == DMA_MEM_TO_DEV)
 		addr = plat->dev_tx[cfg->dst_dev_type];
 
 	return addr;
@@ -1875,7 +2056,7 @@
 static struct dma_async_tx_descriptor *
 d40_prep_sg(struct dma_chan *dchan, struct scatterlist *sg_src,
 	    struct scatterlist *sg_dst, unsigned int sg_len,
-	    enum dma_data_direction direction, unsigned long dma_flags)
+	    enum dma_transfer_direction direction, unsigned long dma_flags)
 {
 	struct d40_chan *chan = container_of(dchan, struct d40_chan, chan);
 	dma_addr_t src_dev_addr = 0;
@@ -1902,9 +2083,9 @@
 	if (direction != DMA_NONE) {
 		dma_addr_t dev_addr = d40_get_dev_addr(chan, direction);
 
-		if (direction == DMA_FROM_DEVICE)
+		if (direction == DMA_DEV_TO_MEM)
 			src_dev_addr = dev_addr;
-		else if (direction == DMA_TO_DEVICE)
+		else if (direction == DMA_MEM_TO_DEV)
 			dst_dev_addr = dev_addr;
 	}
 
@@ -2011,14 +2192,15 @@
 			goto fail;
 		}
 	}
-	is_free_phy = (d40c->phy_chan == NULL);
 
-	err = d40_allocate_channel(d40c);
+	err = d40_allocate_channel(d40c, &is_free_phy);
 	if (err) {
 		chan_err(d40c, "Failed to allocate channel\n");
+		d40c->configured = false;
 		goto fail;
 	}
 
+	pm_runtime_get_sync(d40c->base->dev);
 	/* Fill in basic CFG register values */
 	d40_phy_cfg(&d40c->dma_cfg, &d40c->src_def_cfg,
 		    &d40c->dst_def_cfg, chan_is_logical(d40c));
@@ -2038,6 +2220,12 @@
 			  D40_LCPA_CHAN_SIZE + D40_LCPA_CHAN_DST_DELTA;
 	}
 
+	dev_dbg(chan2dev(d40c), "allocated %s channel (phy %d%s)\n",
+		 chan_is_logical(d40c) ? "logical" : "physical",
+		 d40c->phy_chan->num,
+		 d40c->dma_cfg.use_fixed_channel ? ", fixed" : "");
+
+
 	/*
 	 * Only write channel configuration to the DMA if the physical
 	 * resource is free. In case of multiple logical channels
@@ -2046,6 +2234,8 @@
 	if (is_free_phy)
 		d40_config_write(d40c);
 fail:
+	pm_runtime_mark_last_busy(d40c->base->dev);
+	pm_runtime_put_autosuspend(d40c->base->dev);
 	spin_unlock_irqrestore(&d40c->lock, flags);
 	return err;
 }
@@ -2108,10 +2298,10 @@
 static struct dma_async_tx_descriptor *d40_prep_slave_sg(struct dma_chan *chan,
 							 struct scatterlist *sgl,
 							 unsigned int sg_len,
-							 enum dma_data_direction direction,
+							 enum dma_transfer_direction direction,
 							 unsigned long dma_flags)
 {
-	if (direction != DMA_FROM_DEVICE && direction != DMA_TO_DEVICE)
+	if (direction != DMA_DEV_TO_MEM && direction != DMA_MEM_TO_DEV)
 		return NULL;
 
 	return d40_prep_sg(chan, sgl, sgl, sg_len, direction, dma_flags);
@@ -2120,7 +2310,7 @@
 static struct dma_async_tx_descriptor *
 dma40_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t dma_addr,
 		     size_t buf_len, size_t period_len,
-		     enum dma_data_direction direction)
+		     enum dma_transfer_direction direction)
 {
 	unsigned int periods = buf_len / period_len;
 	struct dma_async_tx_descriptor *txd;
@@ -2269,7 +2459,7 @@
 	dst_addr_width = config->dst_addr_width;
 	dst_maxburst = config->dst_maxburst;
 
-	if (config->direction == DMA_FROM_DEVICE) {
+	if (config->direction == DMA_DEV_TO_MEM) {
 		dma_addr_t dev_addr_rx =
 			d40c->base->plat_data->dev_rx[cfg->src_dev_type];
 
@@ -2292,7 +2482,7 @@
 		if (dst_maxburst == 0)
 			dst_maxburst = src_maxburst;
 
-	} else if (config->direction == DMA_TO_DEVICE) {
+	} else if (config->direction == DMA_MEM_TO_DEV) {
 		dma_addr_t dev_addr_tx =
 			d40c->base->plat_data->dev_tx[cfg->dst_dev_type];
 
@@ -2357,7 +2547,7 @@
 		"configured channel %s for %s, data width %d/%d, "
 		"maxburst %d/%d elements, LE, no flow control\n",
 		dma_chan_name(chan),
-		(config->direction == DMA_FROM_DEVICE) ? "RX" : "TX",
+		(config->direction == DMA_DEV_TO_MEM) ? "RX" : "TX",
 		src_addr_width, dst_addr_width,
 		src_maxburst, dst_maxburst);
 
@@ -2519,6 +2709,72 @@
 	return err;
 }
 
+/* Suspend resume functionality */
+#ifdef CONFIG_PM
+static int dma40_pm_suspend(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct d40_base *base = platform_get_drvdata(pdev);
+	int ret = 0;
+	if (!pm_runtime_suspended(dev))
+		return -EBUSY;
+
+	if (base->lcpa_regulator)
+		ret = regulator_disable(base->lcpa_regulator);
+	return ret;
+}
+
+static int dma40_runtime_suspend(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct d40_base *base = platform_get_drvdata(pdev);
+
+	d40_save_restore_registers(base, true);
+
+	/* Don't disable/enable clocks for v1 due to HW bugs */
+	if (base->rev != 1)
+		writel_relaxed(base->gcc_pwr_off_mask,
+			       base->virtbase + D40_DREG_GCC);
+
+	return 0;
+}
+
+static int dma40_runtime_resume(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct d40_base *base = platform_get_drvdata(pdev);
+
+	if (base->initialized)
+		d40_save_restore_registers(base, false);
+
+	writel_relaxed(D40_DREG_GCC_ENABLE_ALL,
+		       base->virtbase + D40_DREG_GCC);
+	return 0;
+}
+
+static int dma40_resume(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct d40_base *base = platform_get_drvdata(pdev);
+	int ret = 0;
+
+	if (base->lcpa_regulator)
+		ret = regulator_enable(base->lcpa_regulator);
+
+	return ret;
+}
+
+static const struct dev_pm_ops dma40_pm_ops = {
+	.suspend		= dma40_pm_suspend,
+	.runtime_suspend	= dma40_runtime_suspend,
+	.runtime_resume		= dma40_runtime_resume,
+	.resume			= dma40_resume,
+};
+#define DMA40_PM_OPS	(&dma40_pm_ops)
+#else
+#define DMA40_PM_OPS	NULL
+#endif
+
 /* Initialization functions. */
 
 static int __init d40_phy_res_init(struct d40_base *base)
@@ -2527,6 +2783,7 @@
 	int num_phy_chans_avail = 0;
 	u32 val[2];
 	int odd_even_bit = -2;
+	int gcc = D40_DREG_GCC_ENA;
 
 	val[0] = readl(base->virtbase + D40_DREG_PRSME);
 	val[1] = readl(base->virtbase + D40_DREG_PRSMO);
@@ -2538,9 +2795,17 @@
 			/* Mark security only channels as occupied */
 			base->phy_res[i].allocated_src = D40_ALLOC_PHY;
 			base->phy_res[i].allocated_dst = D40_ALLOC_PHY;
+			base->phy_res[i].reserved = true;
+			gcc |= D40_DREG_GCC_EVTGRP_ENA(D40_PHYS_TO_GROUP(i),
+						       D40_DREG_GCC_SRC);
+			gcc |= D40_DREG_GCC_EVTGRP_ENA(D40_PHYS_TO_GROUP(i),
+						       D40_DREG_GCC_DST);
+
+
 		} else {
 			base->phy_res[i].allocated_src = D40_ALLOC_FREE;
 			base->phy_res[i].allocated_dst = D40_ALLOC_FREE;
+			base->phy_res[i].reserved = false;
 			num_phy_chans_avail++;
 		}
 		spin_lock_init(&base->phy_res[i].lock);
@@ -2552,6 +2817,11 @@
 
 		base->phy_res[chan].allocated_src = D40_ALLOC_PHY;
 		base->phy_res[chan].allocated_dst = D40_ALLOC_PHY;
+		base->phy_res[chan].reserved = true;
+		gcc |= D40_DREG_GCC_EVTGRP_ENA(D40_PHYS_TO_GROUP(chan),
+					       D40_DREG_GCC_SRC);
+		gcc |= D40_DREG_GCC_EVTGRP_ENA(D40_PHYS_TO_GROUP(chan),
+					       D40_DREG_GCC_DST);
 		num_phy_chans_avail--;
 	}
 
@@ -2572,6 +2842,15 @@
 		val[0] = val[0] >> 2;
 	}
 
+	/*
+	 * To keep things simple, Enable all clocks initially.
+	 * The clocks will get managed later post channel allocation.
+	 * The clocks for the event lines on which reserved channels exists
+	 * are not managed here.
+	 */
+	writel(D40_DREG_GCC_ENABLE_ALL, base->virtbase + D40_DREG_GCC);
+	base->gcc_pwr_off_mask = gcc;
+
 	return num_phy_chans_avail;
 }
 
@@ -2699,10 +2978,15 @@
 			goto failure;
 	}
 
-	base->lcla_pool.alloc_map = kzalloc(num_phy_chans *
-					    sizeof(struct d40_desc *) *
-					    D40_LCLA_LINK_PER_EVENT_GRP,
+	base->reg_val_backup_chan = kmalloc(base->num_phy_chans *
+					    sizeof(d40_backup_regs_chan),
 					    GFP_KERNEL);
+	if (!base->reg_val_backup_chan)
+		goto failure;
+
+	base->lcla_pool.alloc_map =
+		kzalloc(num_phy_chans * sizeof(struct d40_desc *)
+			* D40_LCLA_LINK_PER_EVENT_GRP, GFP_KERNEL);
 	if (!base->lcla_pool.alloc_map)
 		goto failure;
 
@@ -2741,9 +3025,9 @@
 static void __init d40_hw_init(struct d40_base *base)
 {
 
-	static const struct d40_reg_val dma_init_reg[] = {
+	static struct d40_reg_val dma_init_reg[] = {
 		/* Clock every part of the DMA block from start */
-		{ .reg = D40_DREG_GCC,    .val = 0x0000ff01},
+		{ .reg = D40_DREG_GCC,    .val = D40_DREG_GCC_ENABLE_ALL},
 
 		/* Interrupts on all logical channels */
 		{ .reg = D40_DREG_LCMIS0, .val = 0xFFFFFFFF},
@@ -2943,11 +3227,31 @@
 		d40_err(&pdev->dev, "Failed to ioremap LCPA region\n");
 		goto failure;
 	}
+	/* If lcla has to be located in ESRAM we don't need to allocate */
+	if (base->plat_data->use_esram_lcla) {
+		res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+							"lcla_esram");
+		if (!res) {
+			ret = -ENOENT;
+			d40_err(&pdev->dev,
+				"No \"lcla_esram\" memory resource\n");
+			goto failure;
+		}
+		base->lcla_pool.base = ioremap(res->start,
+						resource_size(res));
+		if (!base->lcla_pool.base) {
+			ret = -ENOMEM;
+			d40_err(&pdev->dev, "Failed to ioremap LCLA region\n");
+			goto failure;
+		}
+		writel(res->start, base->virtbase + D40_DREG_LCLA);
 
-	ret = d40_lcla_allocate(base);
-	if (ret) {
-		d40_err(&pdev->dev, "Failed to allocate LCLA area\n");
-		goto failure;
+	} else {
+		ret = d40_lcla_allocate(base);
+		if (ret) {
+			d40_err(&pdev->dev, "Failed to allocate LCLA area\n");
+			goto failure;
+		}
 	}
 
 	spin_lock_init(&base->lcla_pool.lock);
@@ -2960,6 +3264,32 @@
 		goto failure;
 	}
 
+	pm_runtime_irq_safe(base->dev);
+	pm_runtime_set_autosuspend_delay(base->dev, DMA40_AUTOSUSPEND_DELAY);
+	pm_runtime_use_autosuspend(base->dev);
+	pm_runtime_enable(base->dev);
+	pm_runtime_resume(base->dev);
+
+	if (base->plat_data->use_esram_lcla) {
+
+		base->lcpa_regulator = regulator_get(base->dev, "lcla_esram");
+		if (IS_ERR(base->lcpa_regulator)) {
+			d40_err(&pdev->dev, "Failed to get lcpa_regulator\n");
+			base->lcpa_regulator = NULL;
+			goto failure;
+		}
+
+		ret = regulator_enable(base->lcpa_regulator);
+		if (ret) {
+			d40_err(&pdev->dev,
+				"Failed to enable lcpa_regulator\n");
+			regulator_put(base->lcpa_regulator);
+			base->lcpa_regulator = NULL;
+			goto failure;
+		}
+	}
+
+	base->initialized = true;
 	err = d40_dmaengine_init(base, num_reserved_chans);
 	if (err)
 		goto failure;
@@ -2976,6 +3306,11 @@
 		if (base->virtbase)
 			iounmap(base->virtbase);
 
+		if (base->lcla_pool.base && base->plat_data->use_esram_lcla) {
+			iounmap(base->lcla_pool.base);
+			base->lcla_pool.base = NULL;
+		}
+
 		if (base->lcla_pool.dma_addr)
 			dma_unmap_single(base->dev, base->lcla_pool.dma_addr,
 					 SZ_1K * base->num_phy_chans,
@@ -2998,6 +3333,11 @@
 			clk_put(base->clk);
 		}
 
+		if (base->lcpa_regulator) {
+			regulator_disable(base->lcpa_regulator);
+			regulator_put(base->lcpa_regulator);
+		}
+
 		kfree(base->lcla_pool.alloc_map);
 		kfree(base->lookup_log_chans);
 		kfree(base->lookup_phy_chans);
@@ -3013,6 +3353,7 @@
 	.driver = {
 		.owner = THIS_MODULE,
 		.name  = D40_NAME,
+		.pm = DMA40_PM_OPS,
 	},
 };
 
diff --git a/drivers/dma/ste_dma40_ll.h b/drivers/dma/ste_dma40_ll.h
index b44c4551..8d3d490 100644
--- a/drivers/dma/ste_dma40_ll.h
+++ b/drivers/dma/ste_dma40_ll.h
@@ -16,6 +16,8 @@
 
 #define D40_TYPE_TO_GROUP(type) (type / 16)
 #define D40_TYPE_TO_EVENT(type) (type % 16)
+#define D40_GROUP_SIZE 8
+#define D40_PHYS_TO_GROUP(phys) ((phys & (D40_GROUP_SIZE - 1)) / 2)
 
 /* Most bits of the CFG register are the same in log as in phy mode */
 #define D40_SREG_CFG_MST_POS		15
@@ -123,6 +125,15 @@
 
 /* DMA Register Offsets */
 #define D40_DREG_GCC		0x000
+#define D40_DREG_GCC_ENA	0x1
+/* This assumes that there are only 4 event groups */
+#define D40_DREG_GCC_ENABLE_ALL	0xff01
+#define D40_DREG_GCC_EVTGRP_POS 8
+#define D40_DREG_GCC_SRC 0
+#define D40_DREG_GCC_DST 1
+#define D40_DREG_GCC_EVTGRP_ENA(x, y) \
+	(1 << (D40_DREG_GCC_EVTGRP_POS + 2 * x + y))
+
 #define D40_DREG_PRTYP		0x004
 #define D40_DREG_PRSME		0x008
 #define D40_DREG_PRSMO		0x00C
diff --git a/drivers/dma/timb_dma.c b/drivers/dma/timb_dma.c
index a4a398f..a6f9c16 100644
--- a/drivers/dma/timb_dma.c
+++ b/drivers/dma/timb_dma.c
@@ -90,7 +90,7 @@
 	struct list_head	queue;
 	struct list_head	free_list;
 	unsigned int		bytes_per_line;
-	enum dma_data_direction	direction;
+	enum dma_transfer_direction	direction;
 	unsigned int		descs; /* Descriptors to allocate */
 	unsigned int		desc_elems; /* number of elems per descriptor */
 };
@@ -166,10 +166,10 @@
 
 	if (single)
 		dma_unmap_single(chan2dev(&td_chan->chan), addr, len,
-			td_chan->direction);
+			DMA_TO_DEVICE);
 	else
 		dma_unmap_page(chan2dev(&td_chan->chan), addr, len,
-			td_chan->direction);
+			DMA_TO_DEVICE);
 }
 
 static void __td_unmap_descs(struct timb_dma_desc *td_desc, bool single)
@@ -235,7 +235,7 @@
 		"td_chan: %p, chan: %d, membase: %p\n",
 		td_chan, td_chan->chan.chan_id, td_chan->membase);
 
-	if (td_chan->direction == DMA_FROM_DEVICE) {
+	if (td_chan->direction == DMA_DEV_TO_MEM) {
 
 		/* descriptor address */
 		iowrite32(0, td_chan->membase + TIMBDMA_OFFS_RX_DHAR);
@@ -278,7 +278,7 @@
 		txd->cookie);
 
 	/* make sure to stop the transfer */
-	if (td_chan->direction == DMA_FROM_DEVICE)
+	if (td_chan->direction == DMA_DEV_TO_MEM)
 		iowrite32(0, td_chan->membase + TIMBDMA_OFFS_RX_ER);
 /* Currently no support for stopping DMA transfers
 	else
@@ -558,7 +558,7 @@
 
 static struct dma_async_tx_descriptor *td_prep_slave_sg(struct dma_chan *chan,
 	struct scatterlist *sgl, unsigned int sg_len,
-	enum dma_data_direction direction, unsigned long flags)
+	enum dma_transfer_direction direction, unsigned long flags)
 {
 	struct timb_dma_chan *td_chan =
 		container_of(chan, struct timb_dma_chan, chan);
@@ -606,7 +606,7 @@
 	}
 
 	dma_sync_single_for_device(chan2dmadev(chan), td_desc->txd.phys,
-		td_desc->desc_list_len, DMA_TO_DEVICE);
+		td_desc->desc_list_len, DMA_MEM_TO_DEV);
 
 	return &td_desc->txd;
 }
@@ -775,8 +775,8 @@
 		td_chan->descs = pchan->descriptors;
 		td_chan->desc_elems = pchan->descriptor_elements;
 		td_chan->bytes_per_line = pchan->bytes_per_line;
-		td_chan->direction = pchan->rx ? DMA_FROM_DEVICE :
-			DMA_TO_DEVICE;
+		td_chan->direction = pchan->rx ? DMA_DEV_TO_MEM :
+			DMA_MEM_TO_DEV;
 
 		td_chan->membase = td->membase +
 			(i / 2) * TIMBDMA_INSTANCE_OFFSET +
@@ -841,17 +841,7 @@
 	.remove	= __exit_p(td_remove),
 };
 
-static int __init td_init(void)
-{
-	return platform_driver_register(&td_driver);
-}
-module_init(td_init);
-
-static void __exit td_exit(void)
-{
-	platform_driver_unregister(&td_driver);
-}
-module_exit(td_exit);
+module_platform_driver(td_driver);
 
 MODULE_LICENSE("GPL v2");
 MODULE_DESCRIPTION("Timberdale DMA controller driver");
diff --git a/drivers/dma/txx9dmac.c b/drivers/dma/txx9dmac.c
index cbd83e36..6122c36 100644
--- a/drivers/dma/txx9dmac.c
+++ b/drivers/dma/txx9dmac.c
@@ -845,7 +845,7 @@
 
 static struct dma_async_tx_descriptor *
 txx9dmac_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
-		unsigned int sg_len, enum dma_data_direction direction,
+		unsigned int sg_len, enum dma_transfer_direction direction,
 		unsigned long flags)
 {
 	struct txx9dmac_chan *dc = to_txx9dmac_chan(chan);
@@ -860,9 +860,9 @@
 
 	BUG_ON(!ds || !ds->reg_width);
 	if (ds->tx_reg)
-		BUG_ON(direction != DMA_TO_DEVICE);
+		BUG_ON(direction != DMA_MEM_TO_DEV);
 	else
-		BUG_ON(direction != DMA_FROM_DEVICE);
+		BUG_ON(direction != DMA_DEV_TO_MEM);
 	if (unlikely(!sg_len))
 		return NULL;
 
@@ -882,7 +882,7 @@
 		mem = sg_dma_address(sg);
 
 		if (__is_dmac64(ddev)) {
-			if (direction == DMA_TO_DEVICE) {
+			if (direction == DMA_MEM_TO_DEV) {
 				desc->hwdesc.SAR = mem;
 				desc->hwdesc.DAR = ds->tx_reg;
 			} else {
@@ -891,7 +891,7 @@
 			}
 			desc->hwdesc.CNTR = sg_dma_len(sg);
 		} else {
-			if (direction == DMA_TO_DEVICE) {
+			if (direction == DMA_MEM_TO_DEV) {
 				desc->hwdesc32.SAR = mem;
 				desc->hwdesc32.DAR = ds->tx_reg;
 			} else {
@@ -900,7 +900,7 @@
 			}
 			desc->hwdesc32.CNTR = sg_dma_len(sg);
 		}
-		if (direction == DMA_TO_DEVICE) {
+		if (direction == DMA_MEM_TO_DEV) {
 			sai = ds->reg_width;
 			dai = 0;
 		} else {
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index cb351d3..0226040 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -474,8 +474,8 @@
 	select HWMON_VID
 	help
 	  If you say yes here you get support for ITE IT8705F, IT8712F,
-	  IT8716F, IT8718F, IT8720F, IT8721F, IT8726F and IT8758E sensor
-	  chips, and the SiS960 clone.
+	  IT8716F, IT8718F, IT8720F, IT8721F, IT8726F, IT8728F and IT8758E
+	  sensor chips, and the SiS960 clone.
 
 	  This driver can also be built as a module.  If so, the module
 	  will be called it87.
@@ -515,11 +515,11 @@
 	  will be called lineage-pem.
 
 config SENSORS_LM63
-	tristate "National Semiconductor LM63 and LM64"
+	tristate "National Semiconductor LM63 and compatibles"
 	depends on I2C
 	help
 	  If you say yes here you get support for the National
-	  Semiconductor LM63 and LM64 remote diode digital temperature
+	  Semiconductor LM63, LM64, and LM96163 remote diode digital temperature
 	  sensors with integrated fan control.  Such chips are found
 	  on the Tyan S4882 (Thunder K8QS Pro) motherboard, among
 	  others.
diff --git a/drivers/hwmon/adm1031.c b/drivers/hwmon/adm1031.c
index e6291da..97e2cfb 100644
--- a/drivers/hwmon/adm1031.c
+++ b/drivers/hwmon/adm1031.c
@@ -155,7 +155,8 @@
 #define TEMP_OFFSET_FROM_REG(val)	TEMP_FROM_REG((val) < 0 ? \
 						      (val) | 0x70 : (val))
 
-#define FAN_FROM_REG(reg, div)		((reg) ? (11250 * 60) / ((reg) * (div)) : 0)
+#define FAN_FROM_REG(reg, div)		((reg) ? \
+					 (11250 * 60) / ((reg) * (div)) : 0)
 
 static int FAN_TO_REG(int reg, int div)
 {
@@ -174,8 +175,8 @@
 	(((reg) & 0x1F) | (((val) << 5) & 0xe0))
 
 #define AUTO_TEMP_MIN_TO_REG(val, reg)	\
-	((((val)/500) & 0xf8)|((reg) & 0x7))
-#define AUTO_TEMP_RANGE_FROM_REG(reg)	(5000 * (1<< ((reg)&0x7)))
+	((((val) / 500) & 0xf8) | ((reg) & 0x7))
+#define AUTO_TEMP_RANGE_FROM_REG(reg)	(5000 * (1 << ((reg) & 0x7)))
 #define AUTO_TEMP_MIN_FROM_REG(reg)	(1000 * ((((reg) >> 3) & 0x1f) << 2))
 
 #define AUTO_TEMP_MIN_FROM_REG_DEG(reg)	((((reg) >> 3) & 0x1f) << 2)
@@ -202,7 +203,7 @@
 
 /* FAN auto control */
 #define GET_FAN_AUTO_BITFIELD(data, idx)	\
-	(*(data)->chan_select_table)[FAN_CHAN_FROM_REG((data)->conf1)][idx%2]
+	(*(data)->chan_select_table)[FAN_CHAN_FROM_REG((data)->conf1)][idx % 2]
 
 /* The tables below contains the possible values for the auto fan
  * control bitfields. the index in the table is the register value.
@@ -230,7 +231,7 @@
  */
 static int
 get_fan_auto_nearest(struct adm1031_data *data,
-		     int chan, u8 val, u8 reg, u8 * new_reg)
+		     int chan, u8 val, u8 reg, u8 *new_reg)
 {
 	int i;
 	int first_match = -1, exact_match = -1;
@@ -258,13 +259,13 @@
 		}
 	}
 
-	if (exact_match >= 0) {
+	if (exact_match >= 0)
 		*new_reg = exact_match;
-	} else if (first_match >= 0) {
+	else if (first_match >= 0)
 		*new_reg = first_match;
-	} else {
+	else
 		return -EINVAL;
-	}
+
 	return 0;
 }
 
@@ -283,23 +284,28 @@
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adm1031_data *data = i2c_get_clientdata(client);
 	int nr = to_sensor_dev_attr(attr)->index;
-	int val = simple_strtol(buf, NULL, 10);
+	long val;
 	u8 reg;
 	int ret;
 	u8 old_fan_mode;
 
+	ret = kstrtol(buf, 10, &val);
+	if (ret)
+		return ret;
+
 	old_fan_mode = data->conf1;
 
 	mutex_lock(&data->update_lock);
 
-	if ((ret = get_fan_auto_nearest(data, nr, val, data->conf1, &reg))) {
+	ret = get_fan_auto_nearest(data, nr, val, data->conf1, &reg);
+	if (ret) {
 		mutex_unlock(&data->update_lock);
 		return ret;
 	}
 	data->conf1 = FAN_CHAN_TO_REG(reg, data->conf1);
 	if ((data->conf1 & ADM1031_CONF1_AUTO_MODE) ^
 	    (old_fan_mode & ADM1031_CONF1_AUTO_MODE)) {
-		if (data->conf1 & ADM1031_CONF1_AUTO_MODE){
+		if (data->conf1 & ADM1031_CONF1_AUTO_MODE) {
 			/* Switch to Auto Fan Mode
 			 * Save PWM registers
 			 * Set PWM registers to 33% Both */
@@ -350,7 +356,12 @@
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adm1031_data *data = i2c_get_clientdata(client);
 	int nr = to_sensor_dev_attr(attr)->index;
-	int val = simple_strtol(buf, NULL, 10);
+	long val;
+	int ret;
+
+	ret = kstrtol(buf, 10, &val);
+	if (ret)
+		return ret;
 
 	mutex_lock(&data->update_lock);
 	data->auto_temp[nr] = AUTO_TEMP_MIN_TO_REG(val, data->auto_temp[nr]);
@@ -374,10 +385,16 @@
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adm1031_data *data = i2c_get_clientdata(client);
 	int nr = to_sensor_dev_attr(attr)->index;
-	int val = simple_strtol(buf, NULL, 10);
+	long val;
+	int ret;
+
+	ret = kstrtol(buf, 10, &val);
+	if (ret)
+		return ret;
 
 	mutex_lock(&data->update_lock);
-	data->temp_max[nr] = AUTO_TEMP_MAX_TO_REG(val, data->auto_temp[nr], data->pwm[nr]);
+	data->temp_max[nr] = AUTO_TEMP_MAX_TO_REG(val, data->auto_temp[nr],
+						  data->pwm[nr]);
 	adm1031_write_value(client, ADM1031_REG_AUTO_TEMP(nr),
 			    data->temp_max[nr]);
 	mutex_unlock(&data->update_lock);
@@ -410,8 +427,12 @@
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adm1031_data *data = i2c_get_clientdata(client);
 	int nr = to_sensor_dev_attr(attr)->index;
-	int val = simple_strtol(buf, NULL, 10);
-	int reg;
+	long val;
+	int ret, reg;
+
+	ret = kstrtol(buf, 10, &val);
+	if (ret)
+		return ret;
 
 	mutex_lock(&data->update_lock);
 	if ((data->conf1 & ADM1031_CONF1_AUTO_MODE) &&
@@ -449,9 +470,13 @@
 
 	if (data->conf1 & ADM1031_CONF1_AUTO_MODE) {
 		switch (data->conf1 & 0x60) {
-		case 0x00:	/* remote temp1 controls fan1 remote temp2 controls fan2 */
+		case 0x00:
+			/*
+			 * remote temp1 controls fan1,
+			 * remote temp2 controls fan2
+			 */
 			res = data->temp[chan+1] >=
-			      AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[chan+1]);
+			    AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[chan+1]);
 			break;
 		case 0x20:	/* remote temp1 controls both fans */
 			res =
@@ -515,7 +540,12 @@
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adm1031_data *data = i2c_get_clientdata(client);
 	int nr = to_sensor_dev_attr(attr)->index;
-	int val = simple_strtol(buf, NULL, 10);
+	long val;
+	int ret;
+
+	ret = kstrtol(buf, 10, &val);
+	if (ret)
+		return ret;
 
 	mutex_lock(&data->update_lock);
 	if (val) {
@@ -534,10 +564,15 @@
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adm1031_data *data = i2c_get_clientdata(client);
 	int nr = to_sensor_dev_attr(attr)->index;
-	int val = simple_strtol(buf, NULL, 10);
+	long val;
 	u8 tmp;
 	int old_div;
 	int new_min;
+	int ret;
+
+	ret = kstrtol(buf, 10, &val);
+	if (ret)
+		return ret;
 
 	tmp = val == 8 ? 0xc0 :
 	      val == 4 ? 0x80 :
@@ -631,9 +666,13 @@
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adm1031_data *data = i2c_get_clientdata(client);
 	int nr = to_sensor_dev_attr(attr)->index;
-	int val;
+	long val;
+	int ret;
 
-	val = simple_strtol(buf, NULL, 10);
+	ret = kstrtol(buf, 10, &val);
+	if (ret)
+		return ret;
+
 	val = SENSORS_LIMIT(val, -15000, 15000);
 	mutex_lock(&data->update_lock);
 	data->temp_offset[nr] = TEMP_OFFSET_TO_REG(val);
@@ -648,9 +687,13 @@
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adm1031_data *data = i2c_get_clientdata(client);
 	int nr = to_sensor_dev_attr(attr)->index;
-	int val;
+	long val;
+	int ret;
 
-	val = simple_strtol(buf, NULL, 10);
+	ret = kstrtol(buf, 10, &val);
+	if (ret)
+		return ret;
+
 	val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875);
 	mutex_lock(&data->update_lock);
 	data->temp_min[nr] = TEMP_TO_REG(val);
@@ -665,9 +708,13 @@
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adm1031_data *data = i2c_get_clientdata(client);
 	int nr = to_sensor_dev_attr(attr)->index;
-	int val;
+	long val;
+	int ret;
 
-	val = simple_strtol(buf, NULL, 10);
+	ret = kstrtol(buf, 10, &val);
+	if (ret)
+		return ret;
+
 	val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875);
 	mutex_lock(&data->update_lock);
 	data->temp_max[nr] = TEMP_TO_REG(val);
@@ -682,9 +729,13 @@
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adm1031_data *data = i2c_get_clientdata(client);
 	int nr = to_sensor_dev_attr(attr)->index;
-	int val;
+	long val;
+	int ret;
 
-	val = simple_strtol(buf, NULL, 10);
+	ret = kstrtol(buf, 10, &val);
+	if (ret)
+		return ret;
+
 	val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875);
 	mutex_lock(&data->update_lock);
 	data->temp_crit[nr] = TEMP_TO_REG(val);
@@ -711,7 +762,8 @@
 temp_reg(3);
 
 /* Alarms */
-static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
+			   char *buf)
 {
 	struct adm1031_data *data = adm1031_update_device(dev);
 	return sprintf(buf, "%d\n", data->alarm);
@@ -919,12 +971,13 @@
 	adm1031_init_client(client);
 
 	/* Register sysfs hooks */
-	if ((err = sysfs_create_group(&client->dev.kobj, &adm1031_group)))
+	err = sysfs_create_group(&client->dev.kobj, &adm1031_group);
+	if (err)
 		goto exit_free;
 
 	if (data->chip_type == adm1031) {
-		if ((err = sysfs_create_group(&client->dev.kobj,
-						&adm1031_group_opt)))
+		err = sysfs_create_group(&client->dev.kobj, &adm1031_group_opt);
+		if (err)
 			goto exit_remove;
 	}
 
@@ -970,14 +1023,13 @@
 	}
 	/* Initialize the ADM1031 chip (enables fan speed reading ) */
 	read_val = adm1031_read_value(client, ADM1031_REG_CONF2);
-	if ((read_val | mask) != read_val) {
-	    adm1031_write_value(client, ADM1031_REG_CONF2, read_val | mask);
-	}
+	if ((read_val | mask) != read_val)
+		adm1031_write_value(client, ADM1031_REG_CONF2, read_val | mask);
 
 	read_val = adm1031_read_value(client, ADM1031_REG_CONF1);
 	if ((read_val | ADM1031_CONF1_MONITOR_ENABLE) != read_val) {
-	    adm1031_write_value(client, ADM1031_REG_CONF1, read_val |
-				ADM1031_CONF1_MONITOR_ENABLE);
+		adm1031_write_value(client, ADM1031_REG_CONF1,
+				    read_val | ADM1031_CONF1_MONITOR_ENABLE);
 	}
 
 	/* Read the chip's update rate */
@@ -1024,8 +1076,7 @@
 				/* oldh is actually newer */
 				if (newh != oldh)
 					dev_warn(&client->dev,
-						 "Remote temperature may be "
-						 "wrong.\n");
+					  "Remote temperature may be wrong.\n");
 #endif
 			}
 			data->temp[chan] = newh;
@@ -1052,22 +1103,24 @@
 		data->conf2 = adm1031_read_value(client, ADM1031_REG_CONF2);
 
 		data->alarm = adm1031_read_value(client, ADM1031_REG_STATUS(0))
-			     | (adm1031_read_value(client, ADM1031_REG_STATUS(1))
-				<< 8);
-		if (data->chip_type == adm1030) {
+		    | (adm1031_read_value(client, ADM1031_REG_STATUS(1)) << 8);
+		if (data->chip_type == adm1030)
 			data->alarm &= 0xc0ff;
-		}
 
-		for (chan=0; chan<(data->chip_type == adm1030 ? 1 : 2); chan++) {
+		for (chan = 0; chan < (data->chip_type == adm1030 ? 1 : 2);
+		     chan++) {
 			data->fan_div[chan] =
-			    adm1031_read_value(client, ADM1031_REG_FAN_DIV(chan));
+			    adm1031_read_value(client,
+					       ADM1031_REG_FAN_DIV(chan));
 			data->fan_min[chan] =
-			    adm1031_read_value(client, ADM1031_REG_FAN_MIN(chan));
+			    adm1031_read_value(client,
+					       ADM1031_REG_FAN_MIN(chan));
 			data->fan[chan] =
-			    adm1031_read_value(client, ADM1031_REG_FAN_SPEED(chan));
+			    adm1031_read_value(client,
+					       ADM1031_REG_FAN_SPEED(chan));
 			data->pwm[chan] =
-			    0xf & (adm1031_read_value(client, ADM1031_REG_PWM) >>
-				   (4*chan));
+			  (adm1031_read_value(client,
+					ADM1031_REG_PWM) >> (4 * chan)) & 0x0f;
 		}
 		data->last_updated = jiffies;
 		data->valid = 1;
diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c
index 1fdef88..a6c6ec3 100644
--- a/drivers/hwmon/coretemp.c
+++ b/drivers/hwmon/coretemp.c
@@ -190,7 +190,8 @@
 	return tdata->valid ? sprintf(buf, "%d\n", tdata->temp) : -EAGAIN;
 }
 
-static int adjust_tjmax(struct cpuinfo_x86 *c, u32 id, struct device *dev)
+static int __cpuinit adjust_tjmax(struct cpuinfo_x86 *c, u32 id,
+				  struct device *dev)
 {
 	/* The 100C is default for both mobile and non mobile CPUs */
 
@@ -284,7 +285,8 @@
 	return tjmax;
 }
 
-static int get_tjmax(struct cpuinfo_x86 *c, u32 id, struct device *dev)
+static int __cpuinit get_tjmax(struct cpuinfo_x86 *c, u32 id,
+			       struct device *dev)
 {
 	int err;
 	u32 eax, edx;
@@ -323,7 +325,8 @@
 	return adjust_tjmax(c, id, dev);
 }
 
-static int create_name_attr(struct platform_data *pdata, struct device *dev)
+static int __devinit create_name_attr(struct platform_data *pdata,
+				      struct device *dev)
 {
 	sysfs_attr_init(&pdata->name_attr.attr);
 	pdata->name_attr.attr.name = "name";
@@ -332,8 +335,8 @@
 	return device_create_file(dev, &pdata->name_attr);
 }
 
-static int create_core_attrs(struct temp_data *tdata, struct device *dev,
-				int attr_no)
+static int __cpuinit create_core_attrs(struct temp_data *tdata,
+				       struct device *dev, int attr_no)
 {
 	int err, i;
 	static ssize_t (*const rd_ptr[TOTAL_ATTRS]) (struct device *dev,
@@ -383,7 +386,7 @@
 	return 0;
 }
 
-static struct platform_device *coretemp_get_pdev(unsigned int cpu)
+static struct platform_device __cpuinit *coretemp_get_pdev(unsigned int cpu)
 {
 	u16 phys_proc_id = TO_PHYS_ID(cpu);
 	struct pdev_entry *p;
@@ -400,7 +403,8 @@
 	return NULL;
 }
 
-static struct temp_data *init_temp_data(unsigned int cpu, int pkg_flag)
+static struct temp_data __cpuinit *init_temp_data(unsigned int cpu,
+						  int pkg_flag)
 {
 	struct temp_data *tdata;
 
@@ -418,7 +422,7 @@
 	return tdata;
 }
 
-static int create_core_data(struct platform_device *pdev,
+static int __cpuinit create_core_data(struct platform_device *pdev,
 				unsigned int cpu, int pkg_flag)
 {
 	struct temp_data *tdata;
@@ -489,7 +493,7 @@
 	return err;
 }
 
-static void coretemp_add_core(unsigned int cpu, int pkg_flag)
+static void __cpuinit coretemp_add_core(unsigned int cpu, int pkg_flag)
 {
 	struct platform_device *pdev = coretemp_get_pdev(cpu);
 	int err;
@@ -618,7 +622,7 @@
 	return err;
 }
 
-static void coretemp_device_remove(unsigned int cpu)
+static void __cpuinit coretemp_device_remove(unsigned int cpu)
 {
 	struct pdev_entry *p, *n;
 	u16 phys_proc_id = TO_PHYS_ID(cpu);
@@ -634,7 +638,7 @@
 	mutex_unlock(&pdev_list_mutex);
 }
 
-static bool is_any_core_online(struct platform_data *pdata)
+static bool __cpuinit is_any_core_online(struct platform_data *pdata)
 {
 	int i;
 
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index 603ef2a..0054d6f 100644
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -17,6 +17,7 @@
  *            IT8720F  Super I/O chip w/LPC interface
  *            IT8721F  Super I/O chip w/LPC interface
  *            IT8726F  Super I/O chip w/LPC interface
+ *            IT8728F  Super I/O chip w/LPC interface
  *            IT8758E  Super I/O chip w/LPC interface
  *            Sis950   A clone of the IT8705F
  *
@@ -58,7 +59,7 @@
 
 #define DRVNAME "it87"
 
-enum chips { it87, it8712, it8716, it8718, it8720, it8721 };
+enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728 };
 
 static unsigned short force_id;
 module_param(force_id, ushort, 0);
@@ -135,6 +136,7 @@
 #define IT8720F_DEVID 0x8720
 #define IT8721F_DEVID 0x8721
 #define IT8726F_DEVID 0x8726
+#define IT8728F_DEVID 0x8728
 #define IT87_ACT_REG  0x30
 #define IT87_BASE_REG 0x60
 
@@ -274,11 +276,31 @@
 	s8 auto_temp[3][5];	/* [nr][0] is point1_temp_hyst */
 };
 
+static inline int has_12mv_adc(const struct it87_data *data)
+{
+	/*
+	 * IT8721F and later have a 12 mV ADC, also with internal scaling
+	 * on selected inputs.
+	 */
+	return data->type == it8721
+	    || data->type == it8728;
+}
+
+static inline int has_newer_autopwm(const struct it87_data *data)
+{
+	/*
+	 * IT8721F and later have separate registers for the temperature
+	 * mapping and the manual duty cycle.
+	 */
+	return data->type == it8721
+	    || data->type == it8728;
+}
+
 static u8 in_to_reg(const struct it87_data *data, int nr, long val)
 {
 	long lsb;
 
-	if (data->type == it8721) {
+	if (has_12mv_adc(data)) {
 		if (data->in_scaled & (1 << nr))
 			lsb = 24;
 		else
@@ -292,7 +314,7 @@
 
 static int in_from_reg(const struct it87_data *data, int nr, int val)
 {
-	if (data->type == it8721) {
+	if (has_12mv_adc(data)) {
 		if (data->in_scaled & (1 << nr))
 			return val * 24;
 		else
@@ -329,7 +351,7 @@
 
 static u8 pwm_to_reg(const struct it87_data *data, long val)
 {
-	if (data->type == it8721)
+	if (has_newer_autopwm(data))
 		return val;
 	else
 		return val >> 1;
@@ -337,7 +359,7 @@
 
 static int pwm_from_reg(const struct it87_data *data, u8 reg)
 {
-	if (data->type == it8721)
+	if (has_newer_autopwm(data))
 		return reg;
 	else
 		return (reg & 0x7f) << 1;
@@ -374,7 +396,8 @@
 	    || data->type == it8716
 	    || data->type == it8718
 	    || data->type == it8720
-	    || data->type == it8721;
+	    || data->type == it8721
+	    || data->type == it8728;
 }
 
 static inline int has_old_autopwm(const struct it87_data *data)
@@ -842,7 +865,7 @@
 				 data->fan_main_ctrl);
 	} else {
 		if (val == 1)				/* Manual mode */
-			data->pwm_ctrl[nr] = data->type == it8721 ?
+			data->pwm_ctrl[nr] = has_newer_autopwm(data) ?
 					     data->pwm_temp_map[nr] :
 					     data->pwm_duty[nr];
 		else					/* Automatic mode */
@@ -870,7 +893,7 @@
 		return -EINVAL;
 
 	mutex_lock(&data->update_lock);
-	if (data->type == it8721) {
+	if (has_newer_autopwm(data)) {
 		/* If we are in automatic mode, the PWM duty cycle register
 		 * is read-only so we can't write the value */
 		if (data->pwm_ctrl[nr] & 0x80) {
@@ -1311,8 +1334,8 @@
 	struct it87_data *data = dev_get_drvdata(dev);
 	int nr = to_sensor_dev_attr(attr)->index;
 
-	return sprintf(buf, "%s\n", data->type == it8721 ? labels_it8721[nr]
-							 : labels[nr]);
+	return sprintf(buf, "%s\n", has_12mv_adc(data) ? labels_it8721[nr]
+						       : labels[nr]);
 }
 static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
 static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
@@ -1605,6 +1628,9 @@
 	case IT8721F_DEVID:
 		sio_data->type = it8721;
 		break;
+	case IT8728F_DEVID:
+		sio_data->type = it8728;
+		break;
 	case 0xffff:	/* No device at all */
 		goto exit;
 	default:
@@ -1646,8 +1672,11 @@
 		superio_select(GPIO);
 
 		reg = superio_inb(IT87_SIO_GPIO3_REG);
-		if (sio_data->type == it8721) {
-			/* The IT8721F/IT8758E doesn't have VID pins at all */
+		if (sio_data->type == it8721 || sio_data->type == it8728) {
+			/*
+			 * The IT8721F/IT8758E doesn't have VID pins at all,
+			 * not sure about the IT8728F.
+			 */
 			sio_data->skip_vid = 1;
 		} else {
 			/* We need at least 4 VID pins */
@@ -1692,7 +1721,8 @@
 		}
 		if (reg & (1 << 0))
 			sio_data->internal |= (1 << 0);
-		if ((reg & (1 << 1)) || sio_data->type == it8721)
+		if ((reg & (1 << 1)) || sio_data->type == it8721 ||
+		    sio_data->type == it8728)
 			sio_data->internal |= (1 << 1);
 
 		sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
@@ -1770,6 +1800,7 @@
 		"it8718",
 		"it8720",
 		"it8721",
+		"it8728",
 	};
 
 	res = platform_get_resource(pdev, IORESOURCE_IO, 0);
@@ -1807,7 +1838,7 @@
 	enable_pwm_interface = it87_check_pwm(dev);
 
 	/* Starting with IT8721F, we handle scaling of internal voltages */
-	if (data->type == it8721) {
+	if (has_12mv_adc(data)) {
 		if (sio_data->internal & (1 << 0))
 			data->in_scaled |= (1 << 3);	/* in3 is AVCC */
 		if (sio_data->internal & (1 << 1))
@@ -2093,7 +2124,7 @@
 static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
 {
 	data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM(nr));
-	if (data->type == it8721) {
+	if (has_newer_autopwm(data)) {
 		data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
 		data->pwm_duty[nr] = it87_read_value(data,
 						     IT87_REG_PWM_DUTY(nr));
diff --git a/drivers/hwmon/lm63.c b/drivers/hwmon/lm63.c
index 508cb29..5e6457a 100644
--- a/drivers/hwmon/lm63.c
+++ b/drivers/hwmon/lm63.c
@@ -47,10 +47,14 @@
 #include <linux/err.h>
 #include <linux/mutex.h>
 #include <linux/sysfs.h>
+#include <linux/types.h>
 
 /*
  * Addresses to scan
- * Address is fully defined internally and cannot be changed.
+ * Address is fully defined internally and cannot be changed except for
+ * LM64 which has one pin dedicated to address selection.
+ * LM63 and LM96163 have address 0x4c.
+ * LM64 can have address 0x18 or 0x4e.
  */
 
 static const unsigned short normal_i2c[] = { 0x18, 0x4c, 0x4e, I2C_CLIENT_END };
@@ -60,6 +64,7 @@
  */
 
 #define LM63_REG_CONFIG1		0x03
+#define LM63_REG_CONVRATE		0x04
 #define LM63_REG_CONFIG2		0xBF
 #define LM63_REG_CONFIG_FAN		0x4A
 
@@ -70,6 +75,9 @@
 
 #define LM63_REG_PWM_VALUE		0x4C
 #define LM63_REG_PWM_FREQ		0x4D
+#define LM63_REG_LUT_TEMP_HYST		0x4F
+#define LM63_REG_LUT_TEMP(nr)		(0x50 + 2 * (nr))
+#define LM63_REG_LUT_PWM(nr)		(0x51 + 2 * (nr))
 
 #define LM63_REG_LOCAL_TEMP		0x00
 #define LM63_REG_LOCAL_HIGH		0x05
@@ -91,6 +99,16 @@
 #define LM63_REG_MAN_ID			0xFE
 #define LM63_REG_CHIP_ID		0xFF
 
+#define LM96163_REG_TRUTHERM		0x30
+#define LM96163_REG_REMOTE_TEMP_U_MSB	0x31
+#define LM96163_REG_REMOTE_TEMP_U_LSB	0x32
+#define LM96163_REG_CONFIG_ENHANCED	0x45
+
+#define LM63_MAX_CONVRATE		9
+
+#define LM63_MAX_CONVRATE_HZ		32
+#define LM96163_MAX_CONVRATE_HZ		26
+
 /*
  * Conversions and various macros
  * For tachometer counts, the LM63 uses 16-bit values.
@@ -112,15 +130,24 @@
 				 (val) >= 127000 ? 127 : \
 				 (val) < 0 ? ((val) - 500) / 1000 : \
 				 ((val) + 500) / 1000)
+#define TEMP8U_TO_REG(val)	((val) <= 0 ? 0 : \
+				 (val) >= 255000 ? 255 : \
+				 ((val) + 500) / 1000)
 #define TEMP11_FROM_REG(reg)	((reg) / 32 * 125)
 #define TEMP11_TO_REG(val)	((val) <= -128000 ? 0x8000 : \
 				 (val) >= 127875 ? 0x7FE0 : \
 				 (val) < 0 ? ((val) - 62) / 125 * 32 : \
 				 ((val) + 62) / 125 * 32)
+#define TEMP11U_TO_REG(val)	((val) <= 0 ? 0 : \
+				 (val) >= 255875 ? 0xFFE0 : \
+				 ((val) + 62) / 125 * 32)
 #define HYST_TO_REG(val)	((val) <= 0 ? 0 : \
 				 (val) >= 127000 ? 127 : \
 				 ((val) + 500) / 1000)
 
+#define UPDATE_INTERVAL(max, rate) \
+			((1000 << (LM63_MAX_CONVRATE - (rate))) / (max))
+
 /*
  * Functions declaration
  */
@@ -134,7 +161,7 @@
 static int lm63_detect(struct i2c_client *client, struct i2c_board_info *info);
 static void lm63_init_client(struct i2c_client *client);
 
-enum chips { lm63, lm64 };
+enum chips { lm63, lm64, lm96163 };
 
 /*
  * Driver data (common to all clients)
@@ -143,6 +170,7 @@
 static const struct i2c_device_id lm63_id[] = {
 	{ "lm63", lm63 },
 	{ "lm64", lm64 },
+	{ "lm96163", lm96163 },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, lm63_id);
@@ -167,26 +195,53 @@
 	struct device *hwmon_dev;
 	struct mutex update_lock;
 	char valid; /* zero until following fields are valid */
+	char lut_valid; /* zero until lut fields are valid */
 	unsigned long last_updated; /* in jiffies */
-	int kind;
+	unsigned long lut_last_updated; /* in jiffies */
+	enum chips kind;
 	int temp2_offset;
 
+	int update_interval;	/* in milliseconds */
+	int max_convrate_hz;
+	int lut_size;		/* 8 or 12 */
+
 	/* registers values */
 	u8 config, config_fan;
 	u16 fan[2];	/* 0: input
 			   1: low limit */
 	u8 pwm1_freq;
-	u8 pwm1_value;
-	s8 temp8[3];	/* 0: local input
+	u8 pwm1[13];	/* 0: current output
+			   1-12: lookup table */
+	s8 temp8[15];	/* 0: local input
 			   1: local high limit
-			   2: remote critical limit */
-	s16 temp11[3];	/* 0: remote input
+			   2: remote critical limit
+			   3-14: lookup table */
+	s16 temp11[4];	/* 0: remote input
 			   1: remote low limit
-			   2: remote high limit */
+			   2: remote high limit
+			   3: remote offset */
+	u16 temp11u;	/* remote input (unsigned) */
 	u8 temp2_crit_hyst;
+	u8 lut_temp_hyst;
 	u8 alarms;
+	bool pwm_highres;
+	bool lut_temp_highres;
+	bool remote_unsigned; /* true if unsigned remote upper limits */
+	bool trutherm;
 };
 
+static inline int temp8_from_reg(struct lm63_data *data, int nr)
+{
+	if (data->remote_unsigned)
+		return TEMP8_FROM_REG((u8)data->temp8[nr]);
+	return TEMP8_FROM_REG(data->temp8[nr]);
+}
+
+static inline int lut_temp_from_reg(struct lm63_data *data, int nr)
+{
+	return data->temp8[nr] * (data->lut_temp_highres ? 500 : 1000);
+}
+
 /*
  * Sysfs callback functions and files
  */
@@ -204,7 +259,12 @@
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm63_data *data = i2c_get_clientdata(client);
-	unsigned long val = simple_strtoul(buf, NULL, 10);
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	data->fan[1] = FAN_TO_REG(val);
@@ -216,13 +276,22 @@
 	return count;
 }
 
-static ssize_t show_pwm1(struct device *dev, struct device_attribute *dummy,
+static ssize_t show_pwm1(struct device *dev, struct device_attribute *devattr,
 			 char *buf)
 {
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct lm63_data *data = lm63_update_device(dev);
-	return sprintf(buf, "%d\n", data->pwm1_value >= 2 * data->pwm1_freq ?
-		       255 : (data->pwm1_value * 255 + data->pwm1_freq) /
-		       (2 * data->pwm1_freq));
+	int nr = attr->index;
+	int pwm;
+
+	if (data->pwm_highres)
+		pwm = data->pwm1[nr];
+	else
+		pwm = data->pwm1[nr] >= 2 * data->pwm1_freq ?
+		       255 : (data->pwm1[nr] * 255 + data->pwm1_freq) /
+		       (2 * data->pwm1_freq);
+
+	return sprintf(buf, "%d\n", pwm);
 }
 
 static ssize_t set_pwm1(struct device *dev, struct device_attribute *dummy,
@@ -231,22 +300,26 @@
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm63_data *data = i2c_get_clientdata(client);
 	unsigned long val;
-	
+	int err;
+
 	if (!(data->config_fan & 0x20)) /* register is read-only */
 		return -EPERM;
 
-	val = simple_strtoul(buf, NULL, 10);
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
+
+	val = SENSORS_LIMIT(val, 0, 255);
 	mutex_lock(&data->update_lock);
-	data->pwm1_value = val <= 0 ? 0 :
-			   val >= 255 ? 2 * data->pwm1_freq :
-			   (val * data->pwm1_freq * 2 + 127) / 255;
-	i2c_smbus_write_byte_data(client, LM63_REG_PWM_VALUE, data->pwm1_value);
+	data->pwm1[0] = data->pwm_highres ? val :
+			(val * data->pwm1_freq * 2 + 127) / 255;
+	i2c_smbus_write_byte_data(client, LM63_REG_PWM_VALUE, data->pwm1[0]);
 	mutex_unlock(&data->update_lock);
 	return count;
 }
 
-static ssize_t show_pwm1_enable(struct device *dev, struct device_attribute *dummy,
-				char *buf)
+static ssize_t show_pwm1_enable(struct device *dev,
+				struct device_attribute *dummy, char *buf)
 {
 	struct lm63_data *data = lm63_update_device(dev);
 	return sprintf(buf, "%d\n", data->config_fan & 0x20 ? 1 : 2);
@@ -273,21 +346,47 @@
 {
 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct lm63_data *data = lm63_update_device(dev);
-	return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[attr->index])
+	return sprintf(buf, "%d\n", temp8_from_reg(data, attr->index)
 		       + data->temp2_offset);
 }
 
-static ssize_t set_local_temp8(struct device *dev,
-			       struct device_attribute *dummy,
-			       const char *buf, size_t count)
+static ssize_t show_lut_temp(struct device *dev,
+			      struct device_attribute *devattr,
+			      char *buf)
 {
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+	struct lm63_data *data = lm63_update_device(dev);
+	return sprintf(buf, "%d\n", lut_temp_from_reg(data, attr->index)
+		       + data->temp2_offset);
+}
+
+static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr,
+			 const char *buf, size_t count)
+{
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm63_data *data = i2c_get_clientdata(client);
-	long val = simple_strtol(buf, NULL, 10);
+	int nr = attr->index;
+	int reg = nr == 2 ? LM63_REG_REMOTE_TCRIT : LM63_REG_LOCAL_HIGH;
+	long val;
+	int err;
+	int temp;
+
+	err = kstrtol(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
-	data->temp8[1] = TEMP8_TO_REG(val);
-	i2c_smbus_write_byte_data(client, LM63_REG_LOCAL_HIGH, data->temp8[1]);
+	if (nr == 2) {
+		if (data->remote_unsigned)
+			temp = TEMP8U_TO_REG(val - data->temp2_offset);
+		else
+			temp = TEMP8_TO_REG(val - data->temp2_offset);
+	} else {
+		temp = TEMP8_TO_REG(val);
+	}
+	data->temp8[nr] = temp;
+	i2c_smbus_write_byte_data(client, reg, temp);
 	mutex_unlock(&data->update_lock);
 	return count;
 }
@@ -297,28 +396,56 @@
 {
 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct lm63_data *data = lm63_update_device(dev);
-	return sprintf(buf, "%d\n", TEMP11_FROM_REG(data->temp11[attr->index])
-		       + data->temp2_offset);
+	int nr = attr->index;
+	int temp;
+
+	if (!nr) {
+		/*
+		 * Use unsigned temperature unless its value is zero.
+		 * If it is zero, use signed temperature.
+		 */
+		if (data->temp11u)
+			temp = TEMP11_FROM_REG(data->temp11u);
+		else
+			temp = TEMP11_FROM_REG(data->temp11[nr]);
+	} else {
+		if (data->remote_unsigned && nr == 2)
+			temp = TEMP11_FROM_REG((u16)data->temp11[nr]);
+		else
+			temp = TEMP11_FROM_REG(data->temp11[nr]);
+	}
+	return sprintf(buf, "%d\n", temp + data->temp2_offset);
 }
 
 static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,
 			  const char *buf, size_t count)
 {
-	static const u8 reg[4] = {
+	static const u8 reg[6] = {
 		LM63_REG_REMOTE_LOW_MSB,
 		LM63_REG_REMOTE_LOW_LSB,
 		LM63_REG_REMOTE_HIGH_MSB,
 		LM63_REG_REMOTE_HIGH_LSB,
+		LM63_REG_REMOTE_OFFSET_MSB,
+		LM63_REG_REMOTE_OFFSET_LSB,
 	};
 
 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm63_data *data = i2c_get_clientdata(client);
-	long val = simple_strtol(buf, NULL, 10);
+	long val;
+	int err;
 	int nr = attr->index;
 
+	err = kstrtol(buf, 10, &val);
+	if (err)
+		return err;
+
 	mutex_lock(&data->update_lock);
-	data->temp11[nr] = TEMP11_TO_REG(val - data->temp2_offset);
+	if (data->remote_unsigned && nr == 2)
+		data->temp11[nr] = TEMP11U_TO_REG(val - data->temp2_offset);
+	else
+		data->temp11[nr] = TEMP11_TO_REG(val - data->temp2_offset);
+
 	i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2],
 				  data->temp11[nr] >> 8);
 	i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1],
@@ -327,35 +454,143 @@
 	return count;
 }
 
-/* Hysteresis register holds a relative value, while we want to present
-   an absolute to user-space */
-static ssize_t show_temp2_crit_hyst(struct device *dev, struct device_attribute *dummy,
-				    char *buf)
+/*
+ * Hysteresis register holds a relative value, while we want to present
+ * an absolute to user-space
+ */
+static ssize_t show_temp2_crit_hyst(struct device *dev,
+				    struct device_attribute *dummy, char *buf)
 {
 	struct lm63_data *data = lm63_update_device(dev);
-	return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[2])
+	return sprintf(buf, "%d\n", temp8_from_reg(data, 2)
 		       + data->temp2_offset
 		       - TEMP8_FROM_REG(data->temp2_crit_hyst));
 }
 
-/* And now the other way around, user-space provides an absolute
-   hysteresis value and we have to store a relative one */
-static ssize_t set_temp2_crit_hyst(struct device *dev, struct device_attribute *dummy,
+static ssize_t show_lut_temp_hyst(struct device *dev,
+				  struct device_attribute *devattr, char *buf)
+{
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+	struct lm63_data *data = lm63_update_device(dev);
+
+	return sprintf(buf, "%d\n", lut_temp_from_reg(data, attr->index)
+		       + data->temp2_offset
+		       - TEMP8_FROM_REG(data->lut_temp_hyst));
+}
+
+/*
+ * And now the other way around, user-space provides an absolute
+ * hysteresis value and we have to store a relative one
+ */
+static ssize_t set_temp2_crit_hyst(struct device *dev,
+				   struct device_attribute *dummy,
 				   const char *buf, size_t count)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm63_data *data = i2c_get_clientdata(client);
-	long val = simple_strtol(buf, NULL, 10);
+	long val;
+	int err;
 	long hyst;
 
+	err = kstrtol(buf, 10, &val);
+	if (err)
+		return err;
+
 	mutex_lock(&data->update_lock);
-	hyst = TEMP8_FROM_REG(data->temp8[2]) + data->temp2_offset - val;
+	hyst = temp8_from_reg(data, 2) + data->temp2_offset - val;
 	i2c_smbus_write_byte_data(client, LM63_REG_REMOTE_TCRIT_HYST,
 				  HYST_TO_REG(hyst));
 	mutex_unlock(&data->update_lock);
 	return count;
 }
 
+/*
+ * Set conversion rate.
+ * client->update_lock must be held when calling this function.
+ */
+static void lm63_set_convrate(struct i2c_client *client, struct lm63_data *data,
+			      unsigned int interval)
+{
+	int i;
+	unsigned int update_interval;
+
+	/* Shift calculations to avoid rounding errors */
+	interval <<= 6;
+
+	/* find the nearest update rate */
+	update_interval = (1 << (LM63_MAX_CONVRATE + 6)) * 1000
+	  / data->max_convrate_hz;
+	for (i = 0; i < LM63_MAX_CONVRATE; i++, update_interval >>= 1)
+		if (interval >= update_interval * 3 / 4)
+			break;
+
+	i2c_smbus_write_byte_data(client, LM63_REG_CONVRATE, i);
+	data->update_interval = UPDATE_INTERVAL(data->max_convrate_hz, i);
+}
+
+static ssize_t show_update_interval(struct device *dev,
+				    struct device_attribute *attr, char *buf)
+{
+	struct lm63_data *data = dev_get_drvdata(dev);
+
+	return sprintf(buf, "%u\n", data->update_interval);
+}
+
+static ssize_t set_update_interval(struct device *dev,
+				   struct device_attribute *attr,
+				   const char *buf, size_t count)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct lm63_data *data = i2c_get_clientdata(client);
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
+
+	mutex_lock(&data->update_lock);
+	lm63_set_convrate(client, data, SENSORS_LIMIT(val, 0, 100000));
+	mutex_unlock(&data->update_lock);
+
+	return count;
+}
+
+static ssize_t show_type(struct device *dev, struct device_attribute *attr,
+			 char *buf)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct lm63_data *data = i2c_get_clientdata(client);
+
+	return sprintf(buf, data->trutherm ? "1\n" : "2\n");
+}
+
+static ssize_t set_type(struct device *dev, struct device_attribute *attr,
+			const char *buf, size_t count)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct lm63_data *data = i2c_get_clientdata(client);
+	unsigned long val;
+	int ret;
+	u8 reg;
+
+	ret = kstrtoul(buf, 10, &val);
+	if (ret < 0)
+		return ret;
+	if (val != 1 && val != 2)
+		return -EINVAL;
+
+	mutex_lock(&data->update_lock);
+	data->trutherm = val == 1;
+	reg = i2c_smbus_read_byte_data(client, LM96163_REG_TRUTHERM) & ~0x02;
+	i2c_smbus_write_byte_data(client, LM96163_REG_TRUTHERM,
+				  reg | (data->trutherm ? 0x02 : 0x00));
+	data->valid = 0;
+	mutex_unlock(&data->update_lock);
+
+	return count;
+}
+
 static ssize_t show_alarms(struct device *dev, struct device_attribute *dummy,
 			   char *buf)
 {
@@ -377,27 +612,87 @@
 static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan,
 	set_fan, 1);
 
-static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1);
+static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1, 0);
 static DEVICE_ATTR(pwm1_enable, S_IRUGO, show_pwm1_enable, NULL);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point1_pwm, S_IRUGO, show_pwm1, NULL, 1);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp, S_IRUGO,
+	show_lut_temp, NULL, 3);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp_hyst, S_IRUGO,
+	show_lut_temp_hyst, NULL, 3);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point2_pwm, S_IRUGO, show_pwm1, NULL, 2);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp, S_IRUGO,
+	show_lut_temp, NULL, 4);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp_hyst, S_IRUGO,
+	show_lut_temp_hyst, NULL, 4);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point3_pwm, S_IRUGO, show_pwm1, NULL, 3);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point3_temp, S_IRUGO,
+	show_lut_temp, NULL, 5);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point3_temp_hyst, S_IRUGO,
+	show_lut_temp_hyst, NULL, 5);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point4_pwm, S_IRUGO, show_pwm1, NULL, 4);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point4_temp, S_IRUGO,
+	show_lut_temp, NULL, 6);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point4_temp_hyst, S_IRUGO,
+	show_lut_temp_hyst, NULL, 6);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point5_pwm, S_IRUGO, show_pwm1, NULL, 5);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point5_temp, S_IRUGO,
+	show_lut_temp, NULL, 7);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point5_temp_hyst, S_IRUGO,
+	show_lut_temp_hyst, NULL, 7);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point6_pwm, S_IRUGO, show_pwm1, NULL, 6);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point6_temp, S_IRUGO,
+	show_lut_temp, NULL, 8);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point6_temp_hyst, S_IRUGO,
+	show_lut_temp_hyst, NULL, 8);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point7_pwm, S_IRUGO, show_pwm1, NULL, 7);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point7_temp, S_IRUGO,
+	show_lut_temp, NULL, 9);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point7_temp_hyst, S_IRUGO,
+	show_lut_temp_hyst, NULL, 9);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point8_pwm, S_IRUGO, show_pwm1, NULL, 8);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point8_temp, S_IRUGO,
+	show_lut_temp, NULL, 10);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point8_temp_hyst, S_IRUGO,
+	show_lut_temp_hyst, NULL, 10);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point9_pwm, S_IRUGO, show_pwm1, NULL, 9);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point9_temp, S_IRUGO,
+	show_lut_temp, NULL, 11);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point9_temp_hyst, S_IRUGO,
+	show_lut_temp_hyst, NULL, 11);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point10_pwm, S_IRUGO, show_pwm1, NULL, 10);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point10_temp, S_IRUGO,
+	show_lut_temp, NULL, 12);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point10_temp_hyst, S_IRUGO,
+	show_lut_temp_hyst, NULL, 12);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point11_pwm, S_IRUGO, show_pwm1, NULL, 11);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point11_temp, S_IRUGO,
+	show_lut_temp, NULL, 13);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point11_temp_hyst, S_IRUGO,
+	show_lut_temp_hyst, NULL, 13);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point12_pwm, S_IRUGO, show_pwm1, NULL, 12);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point12_temp, S_IRUGO,
+	show_lut_temp, NULL, 14);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point12_temp_hyst, S_IRUGO,
+	show_lut_temp_hyst, NULL, 14);
 
 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_local_temp8, NULL, 0);
 static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_local_temp8,
-	set_local_temp8, 1);
+	set_temp8, 1);
 
 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 0);
 static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp11,
 	set_temp11, 1);
 static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp11,
 	set_temp11, 2);
-/*
- * On LM63, temp2_crit can be set only once, which should be job
- * of the bootloader.
- */
+static SENSOR_DEVICE_ATTR(temp2_offset, S_IWUSR | S_IRUGO, show_temp11,
+	set_temp11, 3);
 static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_remote_temp8,
-	NULL, 2);
+	set_temp8, 2);
 static DEVICE_ATTR(temp2_crit_hyst, S_IWUSR | S_IRUGO, show_temp2_crit_hyst,
 	set_temp2_crit_hyst);
 
+static DEVICE_ATTR(temp2_type, S_IWUSR | S_IRUGO, show_type, set_type);
+
 /* Individual alarm files */
 static SENSOR_DEVICE_ATTR(fan1_min_alarm, S_IRUGO, show_alarm, NULL, 0);
 static SENSOR_DEVICE_ATTR(temp2_crit_alarm, S_IRUGO, show_alarm, NULL, 1);
@@ -408,14 +703,43 @@
 /* Raw alarm file for compatibility */
 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
 
+static DEVICE_ATTR(update_interval, S_IRUGO | S_IWUSR, show_update_interval,
+		   set_update_interval);
+
 static struct attribute *lm63_attributes[] = {
-	&dev_attr_pwm1.attr,
+	&sensor_dev_attr_pwm1.dev_attr.attr,
 	&dev_attr_pwm1_enable.attr,
+	&sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point2_temp_hyst.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point3_temp_hyst.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point4_temp_hyst.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point5_pwm.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point5_temp.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point5_temp_hyst.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point6_pwm.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point6_temp.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point6_temp_hyst.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point7_pwm.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point7_temp.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point7_temp_hyst.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point8_pwm.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point8_temp.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point8_temp_hyst.dev_attr.attr,
+
 	&sensor_dev_attr_temp1_input.dev_attr.attr,
 	&sensor_dev_attr_temp2_input.dev_attr.attr,
 	&sensor_dev_attr_temp2_min.dev_attr.attr,
 	&sensor_dev_attr_temp1_max.dev_attr.attr,
 	&sensor_dev_attr_temp2_max.dev_attr.attr,
+	&sensor_dev_attr_temp2_offset.dev_attr.attr,
 	&sensor_dev_attr_temp2_crit.dev_attr.attr,
 	&dev_attr_temp2_crit_hyst.attr,
 
@@ -425,10 +749,54 @@
 	&sensor_dev_attr_temp2_max_alarm.dev_attr.attr,
 	&sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
 	&dev_attr_alarms.attr,
+	&dev_attr_update_interval.attr,
 	NULL
 };
 
+static struct attribute *lm63_attributes_extra_lut[] = {
+	&sensor_dev_attr_pwm1_auto_point9_pwm.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point9_temp.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point9_temp_hyst.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point10_pwm.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point10_temp.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point10_temp_hyst.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point11_pwm.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point11_temp.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point11_temp_hyst.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point12_pwm.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point12_temp.dev_attr.attr,
+	&sensor_dev_attr_pwm1_auto_point12_temp_hyst.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group lm63_group_extra_lut = {
+	.attrs = lm63_attributes_extra_lut,
+};
+
+/*
+ * On LM63, temp2_crit can be set only once, which should be job
+ * of the bootloader.
+ * On LM64, temp2_crit can always be set.
+ * On LM96163, temp2_crit can be set if bit 1 of the configuration
+ * register is true.
+ */
+static umode_t lm63_attribute_mode(struct kobject *kobj,
+				   struct attribute *attr, int index)
+{
+	struct device *dev = container_of(kobj, struct device, kobj);
+	struct i2c_client *client = to_i2c_client(dev);
+	struct lm63_data *data = i2c_get_clientdata(client);
+
+	if (attr == &sensor_dev_attr_temp2_crit.dev_attr.attr
+	    && (data->kind == lm64 ||
+		(data->kind == lm96163 && (data->config & 0x02))))
+		return attr->mode | S_IWUSR;
+
+	return attr->mode;
+}
+
 static const struct attribute_group lm63_group = {
+	.is_visible = lm63_attribute_mode,
 	.attrs = lm63_attributes,
 };
 
@@ -487,6 +855,8 @@
 		strlcpy(info->type, "lm63", I2C_NAME_SIZE);
 	else if (chip_id == 0x51 && (address == 0x18 || address == 0x4e))
 		strlcpy(info->type, "lm64", I2C_NAME_SIZE);
+	else if (chip_id == 0x49 && address == 0x4c)
+		strlcpy(info->type, "lm96163", I2C_NAME_SIZE);
 	else
 		return -ENODEV;
 
@@ -518,12 +888,24 @@
 	lm63_init_client(new_client);
 
 	/* Register sysfs hooks */
-	if ((err = sysfs_create_group(&new_client->dev.kobj,
-				      &lm63_group)))
+	err = sysfs_create_group(&new_client->dev.kobj, &lm63_group);
+	if (err)
 		goto exit_free;
 	if (data->config & 0x04) { /* tachometer enabled */
-		if ((err = sysfs_create_group(&new_client->dev.kobj,
-					      &lm63_group_fan1)))
+		err = sysfs_create_group(&new_client->dev.kobj,
+					 &lm63_group_fan1);
+		if (err)
+			goto exit_remove_files;
+	}
+	if (data->kind == lm96163) {
+		err = device_create_file(&new_client->dev,
+					 &dev_attr_temp2_type);
+		if (err)
+			goto exit_remove_files;
+
+		err = sysfs_create_group(&new_client->dev.kobj,
+					 &lm63_group_extra_lut);
+		if (err)
 			goto exit_remove_files;
 	}
 
@@ -538,17 +920,25 @@
 exit_remove_files:
 	sysfs_remove_group(&new_client->dev.kobj, &lm63_group);
 	sysfs_remove_group(&new_client->dev.kobj, &lm63_group_fan1);
+	if (data->kind == lm96163) {
+		device_remove_file(&new_client->dev, &dev_attr_temp2_type);
+		sysfs_remove_group(&new_client->dev.kobj,
+				   &lm63_group_extra_lut);
+	}
 exit_free:
 	kfree(data);
 exit:
 	return err;
 }
 
-/* Idealy we shouldn't have to initialize anything, since the BIOS
-   should have taken care of everything */
+/*
+ * Ideally we shouldn't have to initialize anything, since the BIOS
+ * should have taken care of everything
+ */
 static void lm63_init_client(struct i2c_client *client)
 {
 	struct lm63_data *data = i2c_get_clientdata(client);
+	u8 convrate;
 
 	data->config = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG1);
 	data->config_fan = i2c_smbus_read_byte_data(client,
@@ -561,16 +951,57 @@
 		i2c_smbus_write_byte_data(client, LM63_REG_CONFIG1,
 					  data->config);
 	}
+	/* Tachometer is always enabled on LM64 */
+	if (data->kind == lm64)
+		data->config |= 0x04;
 
 	/* We may need pwm1_freq before ever updating the client data */
 	data->pwm1_freq = i2c_smbus_read_byte_data(client, LM63_REG_PWM_FREQ);
 	if (data->pwm1_freq == 0)
 		data->pwm1_freq = 1;
 
+	switch (data->kind) {
+	case lm63:
+	case lm64:
+		data->max_convrate_hz = LM63_MAX_CONVRATE_HZ;
+		data->lut_size = 8;
+		break;
+	case lm96163:
+		data->max_convrate_hz = LM96163_MAX_CONVRATE_HZ;
+		data->lut_size = 12;
+		data->trutherm
+		  = i2c_smbus_read_byte_data(client,
+					     LM96163_REG_TRUTHERM) & 0x02;
+		break;
+	}
+	convrate = i2c_smbus_read_byte_data(client, LM63_REG_CONVRATE);
+	if (unlikely(convrate > LM63_MAX_CONVRATE))
+		convrate = LM63_MAX_CONVRATE;
+	data->update_interval = UPDATE_INTERVAL(data->max_convrate_hz,
+						convrate);
+
+	/*
+	 * For LM96163, check if high resolution PWM
+	 * and unsigned temperature format is enabled.
+	 */
+	if (data->kind == lm96163) {
+		u8 config_enhanced
+		  = i2c_smbus_read_byte_data(client,
+					     LM96163_REG_CONFIG_ENHANCED);
+		if (config_enhanced & 0x20)
+			data->lut_temp_highres = true;
+		if ((config_enhanced & 0x10)
+		    && !(data->config_fan & 0x08) && data->pwm1_freq == 8)
+			data->pwm_highres = true;
+		if (config_enhanced & 0x08)
+			data->remote_unsigned = true;
+	}
+
 	/* Show some debug info about the LM63 configuration */
-	dev_dbg(&client->dev, "Alert/tach pin configured for %s\n",
-		(data->config & 0x04) ? "tachometer input" :
-		"alert output");
+	if (data->kind == lm63)
+		dev_dbg(&client->dev, "Alert/tach pin configured for %s\n",
+			(data->config & 0x04) ? "tachometer input" :
+			"alert output");
 	dev_dbg(&client->dev, "PWM clock %s kHz, output frequency %u Hz\n",
 		(data->config_fan & 0x08) ? "1.4" : "360",
 		((data->config_fan & 0x08) ? 700 : 180000) / data->pwm1_freq);
@@ -586,6 +1017,10 @@
 	hwmon_device_unregister(data->hwmon_dev);
 	sysfs_remove_group(&client->dev.kobj, &lm63_group);
 	sysfs_remove_group(&client->dev.kobj, &lm63_group_fan1);
+	if (data->kind == lm96163) {
+		device_remove_file(&client->dev, &dev_attr_temp2_type);
+		sysfs_remove_group(&client->dev.kobj, &lm63_group_extra_lut);
+	}
 
 	kfree(data);
 	return 0;
@@ -595,10 +1030,15 @@
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm63_data *data = i2c_get_clientdata(client);
+	unsigned long next_update;
+	int i;
 
 	mutex_lock(&data->update_lock);
 
-	if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
+	next_update = data->last_updated
+	  + msecs_to_jiffies(data->update_interval) + 1;
+
+	if (time_after(jiffies, next_update) || !data->valid) {
 		if (data->config & 0x04) { /* tachometer enabled  */
 			/* order matters for fan1_input */
 			data->fan[0] = i2c_smbus_read_byte_data(client,
@@ -615,8 +1055,8 @@
 				  LM63_REG_PWM_FREQ);
 		if (data->pwm1_freq == 0)
 			data->pwm1_freq = 1;
-		data->pwm1_value = i2c_smbus_read_byte_data(client,
-				   LM63_REG_PWM_VALUE);
+		data->pwm1[0] = i2c_smbus_read_byte_data(client,
+				LM63_REG_PWM_VALUE);
 
 		data->temp8[0] = i2c_smbus_read_byte_data(client,
 				 LM63_REG_LOCAL_TEMP);
@@ -636,6 +1076,17 @@
 				  LM63_REG_REMOTE_HIGH_MSB) << 8)
 				| i2c_smbus_read_byte_data(client,
 				  LM63_REG_REMOTE_HIGH_LSB);
+		data->temp11[3] = (i2c_smbus_read_byte_data(client,
+				  LM63_REG_REMOTE_OFFSET_MSB) << 8)
+				| i2c_smbus_read_byte_data(client,
+				  LM63_REG_REMOTE_OFFSET_LSB);
+
+		if (data->kind == lm96163)
+			data->temp11u = (i2c_smbus_read_byte_data(client,
+					LM96163_REG_REMOTE_TEMP_U_MSB) << 8)
+				      | i2c_smbus_read_byte_data(client,
+					LM96163_REG_REMOTE_TEMP_U_LSB);
+
 		data->temp8[2] = i2c_smbus_read_byte_data(client,
 				 LM63_REG_REMOTE_TCRIT);
 		data->temp2_crit_hyst = i2c_smbus_read_byte_data(client,
@@ -648,6 +1099,21 @@
 		data->valid = 1;
 	}
 
+	if (time_after(jiffies, data->lut_last_updated + 5 * HZ) ||
+	    !data->lut_valid) {
+		for (i = 0; i < data->lut_size; i++) {
+			data->pwm1[1 + i] = i2c_smbus_read_byte_data(client,
+					    LM63_REG_LUT_PWM(i));
+			data->temp8[3 + i] = i2c_smbus_read_byte_data(client,
+					     LM63_REG_LUT_TEMP(i));
+		}
+		data->lut_temp_hyst = i2c_smbus_read_byte_data(client,
+				      LM63_REG_LUT_TEMP_HYST);
+
+		data->lut_last_updated = jiffies;
+		data->lut_valid = 1;
+	}
+
 	mutex_unlock(&data->update_lock);
 
 	return data;
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index bdfd675..d2dd5f9 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -917,7 +917,7 @@
 		return err;
 
 	mutex_lock(&data->update_lock);
-	lm90_set_convrate(client, data, val);
+	lm90_set_convrate(client, data, SENSORS_LIMIT(val, 0, 100000));
 	mutex_unlock(&data->update_lock);
 
 	return count;
diff --git a/drivers/hwmon/max1111.c b/drivers/hwmon/max1111.c
index 84ef3a8..482ca90 100644
--- a/drivers/hwmon/max1111.c
+++ b/drivers/hwmon/max1111.c
@@ -106,11 +106,14 @@
 	if (ret < 0)
 		return ret;
 
-	return sprintf(buf, "%d\n", ret);
+	/* assume the reference voltage to be 2.048V, with an 8-bit sample,
+	 * the LSB weight is 8mV
+	 */
+	return sprintf(buf, "%d\n", ret * 8);
 }
 
 #define MAX1111_ADC_ATTR(_id)		\
-	SENSOR_DEVICE_ATTR(adc##_id##_in, S_IRUGO, show_adc, NULL, _id)
+	SENSOR_DEVICE_ATTR(in##_id##_input, S_IRUGO, show_adc, NULL, _id)
 
 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
 static MAX1111_ADC_ATTR(0);
@@ -120,10 +123,10 @@
 
 static struct attribute *max1111_attributes[] = {
 	&dev_attr_name.attr,
-	&sensor_dev_attr_adc0_in.dev_attr.attr,
-	&sensor_dev_attr_adc1_in.dev_attr.attr,
-	&sensor_dev_attr_adc2_in.dev_attr.attr,
-	&sensor_dev_attr_adc3_in.dev_attr.attr,
+	&sensor_dev_attr_in0_input.dev_attr.attr,
+	&sensor_dev_attr_in1_input.dev_attr.attr,
+	&sensor_dev_attr_in2_input.dev_attr.attr,
+	&sensor_dev_attr_in3_input.dev_attr.attr,
 	NULL,
 };
 
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index cbe7a2f..3101dd5 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -682,19 +682,19 @@
 	  will be called xilinx_i2c.
 
 config I2C_EG20T
-	tristate "Intel EG20T PCH / OKI SEMICONDUCTOR IOH(ML7213/ML7223)"
+	tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) I2C"
 	depends on PCI
 	help
 	  This driver is for PCH(Platform controller Hub) I2C of EG20T which
 	  is an IOH(Input/Output Hub) for x86 embedded processor.
 	  This driver can access PCH I2C bus device.
 
-	  This driver also can be used for OKI SEMICONDUCTOR IOH(Input/
-	  Output Hub), ML7213 and ML7223.
-	  ML7213 IOH is for IVI(In-Vehicle Infotainment) use and ML7223 IOH is
-	  for MP(Media Phone) use.
-	  ML7213/ML7223 is companion chip for Intel Atom E6xx series.
-	  ML7213/ML7223 is completely compatible for Intel EG20T PCH.
+	  This driver also can be used for LAPIS Semiconductor IOH(Input/
+	  Output Hub), ML7213, ML7223 and ML7831.
+	  ML7213 IOH is for IVI(In-Vehicle Infotainment) use, ML7223 IOH is
+	  for MP(Media Phone) use and ML7831 IOH is for general purpose use.
+	  ML7213/ML7223/ML7831 is companion chip for Intel Atom E6xx series.
+	  ML7213/ML7223/ML7831 is completely compatible for Intel EG20T PCH.
 
 comment "External I2C/SMBus adapter drivers"
 
diff --git a/drivers/i2c/busses/i2c-eg20t.c b/drivers/i2c/busses/i2c-eg20t.c
index 3ef3557..ca88776 100644
--- a/drivers/i2c/busses/i2c-eg20t.c
+++ b/drivers/i2c/busses/i2c-eg20t.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2010 OKI SEMICONDUCTOR CO., LTD.
+ * Copyright (C) 2011 LAPIS Semiconductor Co., Ltd.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -136,7 +136,8 @@
 /*
 Set the number of I2C instance max
 Intel EG20T PCH :		1ch
-OKI SEMICONDUCTOR ML7213 IOH :	2ch
+LAPIS Semiconductor ML7213 IOH :	2ch
+LAPIS Semiconductor ML7831 IOH :	1ch
 */
 #define PCH_I2C_MAX_DEV			2
 
@@ -180,15 +181,17 @@
 static wait_queue_head_t pch_event;
 static DEFINE_MUTEX(pch_mutex);
 
-/* Definition for ML7213 by OKI SEMICONDUCTOR */
+/* Definition for ML7213 by LAPIS Semiconductor */
 #define PCI_VENDOR_ID_ROHM		0x10DB
 #define PCI_DEVICE_ID_ML7213_I2C	0x802D
 #define PCI_DEVICE_ID_ML7223_I2C	0x8010
+#define PCI_DEVICE_ID_ML7831_I2C	0x8817
 
 static DEFINE_PCI_DEVICE_TABLE(pch_pcidev_id) = {
 	{ PCI_VDEVICE(INTEL, PCI_DEVICE_ID_PCH_I2C),   1, },
 	{ PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ML7213_I2C), 2, },
 	{ PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ML7223_I2C), 1, },
+	{ PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ML7831_I2C), 1, },
 	{0,}
 };
 
@@ -243,7 +246,7 @@
 	if (pch_clk > PCH_MAX_CLK)
 		pch_clk = 62500;
 
-	pch_i2cbc = (pch_clk + (pch_i2c_speed * 4)) / pch_i2c_speed * 8;
+	pch_i2cbc = (pch_clk + (pch_i2c_speed * 4)) / (pch_i2c_speed * 8);
 	/* Set transfer speed in I2CBC */
 	iowrite32(pch_i2cbc, p + PCH_I2CBC);
 
@@ -918,7 +921,9 @@
 		pch_adap->dev.parent = &pdev->dev;
 
 		pch_i2c_init(&adap_info->pch_data[i]);
-		ret = i2c_add_adapter(pch_adap);
+
+		pch_adap->nr = i;
+		ret = i2c_add_numbered_adapter(pch_adap);
 		if (ret) {
 			pch_pci_err(pdev, "i2c_add_adapter[ch:%d] FAILED\n", i);
 			goto err_add_adapter;
@@ -1058,8 +1063,8 @@
 }
 module_exit(pch_pci_exit);
 
-MODULE_DESCRIPTION("Intel EG20T PCH/OKI SEMICONDUCTOR ML7213 IOH I2C Driver");
+MODULE_DESCRIPTION("Intel EG20T PCH/LAPIS Semico ML7213/ML7223/ML7831 IOH I2C");
 MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Tomoya MORINAGA. <tomoya-linux@dsn.okisemi.com>");
+MODULE_AUTHOR("Tomoya MORINAGA. <tomoya-linux@dsn.lapis-semi.com>");
 module_param(pch_i2c_speed, int, (S_IRUSR | S_IWUSR));
 module_param(pch_clk, int, (S_IRUSR | S_IWUSR));
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index fa23faa..f713eac 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -37,6 +37,9 @@
 #include <linux/platform_device.h>
 #include <linux/clk.h>
 #include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_i2c.h>
+#include <linux/of_device.h>
 #include <linux/slab.h>
 #include <linux/i2c-omap.h>
 #include <linux/pm_runtime.h>
@@ -182,7 +185,9 @@
 	u32			latency;	/* maximum mpu wkup latency */
 	void			(*set_mpu_wkup_lat)(struct device *dev,
 						    long latency);
-	u32			speed;		/* Speed of bus in Khz */
+	u32			speed;		/* Speed of bus in kHz */
+	u32			dtrev;		/* extra revision from DT */
+	u32			flags;
 	u16			cmd_err;
 	u8			*buf;
 	u8			*regs;
@@ -235,7 +240,7 @@
 	[OMAP_I2C_BUF_REG] = 0x94,
 	[OMAP_I2C_CNT_REG] = 0x98,
 	[OMAP_I2C_DATA_REG] = 0x9c,
-	[OMAP_I2C_SYSC_REG] = 0x20,
+	[OMAP_I2C_SYSC_REG] = 0x10,
 	[OMAP_I2C_CON_REG] = 0xa4,
 	[OMAP_I2C_OA_REG] = 0xa8,
 	[OMAP_I2C_SA_REG] = 0xac,
@@ -266,11 +271,7 @@
 
 static void omap_i2c_unidle(struct omap_i2c_dev *dev)
 {
-	struct omap_i2c_bus_platform_data *pdata;
-
-	pdata = dev->dev->platform_data;
-
-	if (pdata->flags & OMAP_I2C_FLAG_RESET_REGS_POSTIDLE) {
+	if (dev->flags & OMAP_I2C_FLAG_RESET_REGS_POSTIDLE) {
 		omap_i2c_write_reg(dev, OMAP_I2C_CON_REG, 0);
 		omap_i2c_write_reg(dev, OMAP_I2C_PSC_REG, dev->pscstate);
 		omap_i2c_write_reg(dev, OMAP_I2C_SCLL_REG, dev->scllstate);
@@ -291,13 +292,10 @@
 
 static void omap_i2c_idle(struct omap_i2c_dev *dev)
 {
-	struct omap_i2c_bus_platform_data *pdata;
 	u16 iv;
 
-	pdata = dev->dev->platform_data;
-
 	dev->iestate = omap_i2c_read_reg(dev, OMAP_I2C_IE_REG);
-	if (pdata->rev == OMAP_I2C_IP_VERSION_2)
+	if (dev->dtrev == OMAP_I2C_IP_VERSION_2)
 		omap_i2c_write_reg(dev, OMAP_I2C_IP_V2_IRQENABLE_CLR, 1);
 	else
 		omap_i2c_write_reg(dev, OMAP_I2C_IE_REG, 0);
@@ -320,9 +318,6 @@
 	unsigned long timeout;
 	unsigned long internal_clk = 0;
 	struct clk *fclk;
-	struct omap_i2c_bus_platform_data *pdata;
-
-	pdata = dev->dev->platform_data;
 
 	if (dev->rev >= OMAP_I2C_OMAP1_REV_2) {
 		/* Disable I2C controller before soft reset */
@@ -373,7 +368,7 @@
 	}
 	omap_i2c_write_reg(dev, OMAP_I2C_CON_REG, 0);
 
-	if (pdata->flags & OMAP_I2C_FLAG_ALWAYS_ARMXOR_CLK) {
+	if (dev->flags & OMAP_I2C_FLAG_ALWAYS_ARMXOR_CLK) {
 		/*
 		 * The I2C functional clock is the armxor_ck, so there's
 		 * no need to get "armxor_ck" separately.  Now, if OMAP2420
@@ -397,7 +392,7 @@
 			psc = fclk_rate / 12000000;
 	}
 
-	if (!(pdata->flags & OMAP_I2C_FLAG_SIMPLE_CLOCK)) {
+	if (!(dev->flags & OMAP_I2C_FLAG_SIMPLE_CLOCK)) {
 
 		/*
 		 * HSI2C controller internal clk rate should be 19.2 Mhz for
@@ -406,7 +401,7 @@
 		 * The filter is iclk (fclk for HS) period.
 		 */
 		if (dev->speed > 400 ||
-			       pdata->flags & OMAP_I2C_FLAG_FORCE_19200_INT_CLK)
+			       dev->flags & OMAP_I2C_FLAG_FORCE_19200_INT_CLK)
 			internal_clk = 19200;
 		else if (dev->speed > 100)
 			internal_clk = 9600;
@@ -475,7 +470,7 @@
 
 	dev->errata = 0;
 
-	if (pdata->flags & OMAP_I2C_FLAG_APPLY_ERRATA_I207)
+	if (dev->flags & OMAP_I2C_FLAG_APPLY_ERRATA_I207)
 		dev->errata |= I2C_OMAP_ERRATA_I207;
 
 	/* Enable interrupts */
@@ -484,7 +479,7 @@
 			OMAP_I2C_IE_AL)  | ((dev->fifo_size) ?
 				(OMAP_I2C_IE_RDR | OMAP_I2C_IE_XDR) : 0);
 	omap_i2c_write_reg(dev, OMAP_I2C_IE_REG, dev->iestate);
-	if (pdata->flags & OMAP_I2C_FLAG_RESET_REGS_POSTIDLE) {
+	if (dev->flags & OMAP_I2C_FLAG_RESET_REGS_POSTIDLE) {
 		dev->pscstate = psc;
 		dev->scllstate = scll;
 		dev->sclhstate = sclh;
@@ -804,9 +799,6 @@
 	u16 bits;
 	u16 stat, w;
 	int err, count = 0;
-	struct omap_i2c_bus_platform_data *pdata;
-
-	pdata = dev->dev->platform_data;
 
 	if (pm_runtime_suspended(dev->dev))
 		return IRQ_NONE;
@@ -830,11 +822,9 @@
 				~(OMAP_I2C_STAT_RRDY | OMAP_I2C_STAT_RDR |
 				OMAP_I2C_STAT_XRDY | OMAP_I2C_STAT_XDR));
 
-		if (stat & OMAP_I2C_STAT_NACK) {
+		if (stat & OMAP_I2C_STAT_NACK)
 			err |= OMAP_I2C_STAT_NACK;
-			omap_i2c_write_reg(dev, OMAP_I2C_CON_REG,
-					   OMAP_I2C_CON_STP);
-		}
+
 		if (stat & OMAP_I2C_STAT_AL) {
 			dev_err(dev->dev, "Arbitration lost\n");
 			err |= OMAP_I2C_STAT_AL;
@@ -875,7 +865,7 @@
 					 * Data reg in 2430, omap3 and
 					 * omap4 is 8 bit wide
 					 */
-					if (pdata->flags &
+					if (dev->flags &
 						 OMAP_I2C_FLAG_16BIT_DATA_REG) {
 						if (dev->buf_len) {
 							*dev->buf++ = w >> 8;
@@ -918,7 +908,7 @@
 					 * Data reg in 2430, omap3 and
 					 * omap4 is 8 bit wide
 					 */
-					if (pdata->flags &
+					if (dev->flags &
 						 OMAP_I2C_FLAG_16BIT_DATA_REG) {
 						if (dev->buf_len) {
 							w |= *dev->buf++ << 8;
@@ -965,6 +955,32 @@
 	.functionality	= omap_i2c_func,
 };
 
+#ifdef CONFIG_OF
+static struct omap_i2c_bus_platform_data omap3_pdata = {
+	.rev = OMAP_I2C_IP_VERSION_1,
+	.flags = OMAP_I2C_FLAG_APPLY_ERRATA_I207 |
+		 OMAP_I2C_FLAG_RESET_REGS_POSTIDLE |
+		 OMAP_I2C_FLAG_BUS_SHIFT_2,
+};
+
+static struct omap_i2c_bus_platform_data omap4_pdata = {
+	.rev = OMAP_I2C_IP_VERSION_2,
+};
+
+static const struct of_device_id omap_i2c_of_match[] = {
+	{
+		.compatible = "ti,omap4-i2c",
+		.data = &omap4_pdata,
+	},
+	{
+		.compatible = "ti,omap3-i2c",
+		.data = &omap3_pdata,
+	},
+	{ },
+};
+MODULE_DEVICE_TABLE(of, omap_i2c_of_match);
+#endif
+
 static int __devinit
 omap_i2c_probe(struct platform_device *pdev)
 {
@@ -972,9 +988,10 @@
 	struct i2c_adapter	*adap;
 	struct resource		*mem, *irq, *ioarea;
 	struct omap_i2c_bus_platform_data *pdata = pdev->dev.platform_data;
+	struct device_node	*node = pdev->dev.of_node;
+	const struct of_device_id *match;
 	irq_handler_t isr;
 	int r;
-	u32 speed = 0;
 
 	/* NOTE: driver uses the static register mapping */
 	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -1001,15 +1018,24 @@
 		goto err_release_region;
 	}
 
-	if (pdata != NULL) {
-		speed = pdata->clkrate;
+	match = of_match_device(omap_i2c_of_match, &pdev->dev);
+	if (match) {
+		u32 freq = 100000; /* default to 100000 Hz */
+
+		pdata = match->data;
+		dev->dtrev = pdata->rev;
+		dev->flags = pdata->flags;
+
+		of_property_read_u32(node, "clock-frequency", &freq);
+		/* convert DT freq value in Hz into kHz for speed */
+		dev->speed = freq / 1000;
+	} else if (pdata != NULL) {
+		dev->speed = pdata->clkrate;
+		dev->flags = pdata->flags;
 		dev->set_mpu_wkup_lat = pdata->set_mpu_wkup_lat;
-	} else {
-		speed = 100;	/* Default speed */
-		dev->set_mpu_wkup_lat = NULL;
+		dev->dtrev = pdata->rev;
 	}
 
-	dev->speed = speed;
 	dev->dev = &pdev->dev;
 	dev->irq = irq->start;
 	dev->base = ioremap(mem->start, resource_size(mem));
@@ -1020,9 +1046,9 @@
 
 	platform_set_drvdata(pdev, dev);
 
-	dev->reg_shift = (pdata->flags >> OMAP_I2C_FLAG_BUS_SHIFT__SHIFT) & 3;
+	dev->reg_shift = (dev->flags >> OMAP_I2C_FLAG_BUS_SHIFT__SHIFT) & 3;
 
-	if (pdata->rev == OMAP_I2C_IP_VERSION_2)
+	if (dev->dtrev == OMAP_I2C_IP_VERSION_2)
 		dev->regs = (u8 *)reg_map_ip_v2;
 	else
 		dev->regs = (u8 *)reg_map_ip_v1;
@@ -1035,7 +1061,7 @@
 	if (dev->rev <= OMAP_I2C_REV_ON_3430)
 		dev->errata |= I2C_OMAP3_1P153;
 
-	if (!(pdata->flags & OMAP_I2C_FLAG_NO_FIFO)) {
+	if (!(dev->flags & OMAP_I2C_FLAG_NO_FIFO)) {
 		u16 s;
 
 		/* Set up the fifo size - Get total size */
@@ -1058,7 +1084,7 @@
 		/* calculate wakeup latency constraint for MPU */
 		if (dev->set_mpu_wkup_lat != NULL)
 			dev->latency = (1000000 * dev->fifo_size) /
-				       (1000 * speed / 8);
+				       (1000 * dev->speed / 8);
 	}
 
 	/* reset ASAP, clearing any IRQs */
@@ -1074,7 +1100,7 @@
 	}
 
 	dev_info(dev->dev, "bus %d rev%d.%d.%d at %d kHz\n", pdev->id,
-		 pdata->rev, dev->rev >> 4, dev->rev & 0xf, dev->speed);
+		 dev->dtrev, dev->rev >> 4, dev->rev & 0xf, dev->speed);
 
 	pm_runtime_put(dev->dev);
 
@@ -1085,6 +1111,7 @@
 	strlcpy(adap->name, "OMAP I2C adapter", sizeof(adap->name));
 	adap->algo = &omap_i2c_algo;
 	adap->dev.parent = &pdev->dev;
+	adap->dev.of_node = pdev->dev.of_node;
 
 	/* i2c device drivers may be active on return from add_adapter() */
 	adap->nr = pdev->id;
@@ -1094,6 +1121,8 @@
 		goto err_free_irq;
 	}
 
+	of_i2c_register_devices(adap);
+
 	return 0;
 
 err_free_irq:
@@ -1166,6 +1195,7 @@
 		.name	= "omap_i2c",
 		.owner	= THIS_MODULE,
 		.pm	= OMAP_I2C_PM_OPS,
+		.of_match_table = of_match_ptr(omap_i2c_of_match),
 	},
 };
 
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index 5d2f8e1..20bce51 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -197,7 +197,7 @@
 		.enter = &intel_idle },
 };
 
-static int get_driver_data(int cstate)
+static long get_driver_data(int cstate)
 {
 	int driver_data;
 	switch (cstate) {
@@ -232,6 +232,7 @@
  * @drv: cpuidle driver
  * @index: index of cpuidle state
  *
+ * Must be called under local_irq_disable().
  */
 static int intel_idle(struct cpuidle_device *dev,
 		struct cpuidle_driver *drv, int index)
@@ -247,8 +248,6 @@
 
 	cstate = (((eax) >> MWAIT_SUBSTATE_SIZE) & MWAIT_CSTATE_MASK) + 1;
 
-	local_irq_disable();
-
 	/*
 	 * leave_mm() to avoid costly and often unnecessary wakeups
 	 * for flushing the user TLB's associated with the active mm.
@@ -348,7 +347,8 @@
 	cpuid(CPUID_MWAIT_LEAF, &eax, &ebx, &ecx, &mwait_substates);
 
 	if (!(ecx & CPUID5_ECX_EXTENSIONS_SUPPORTED) ||
-		!(ecx & CPUID5_ECX_INTERRUPT_BREAK))
+	    !(ecx & CPUID5_ECX_INTERRUPT_BREAK) ||
+	    !mwait_substates)
 			return -ENODEV;
 
 	pr_debug(PREFIX "MWAIT substates: 0x%x\n", mwait_substates);
@@ -394,7 +394,7 @@
 	if (boot_cpu_has(X86_FEATURE_ARAT))	/* Always Reliable APIC Timer */
 		lapic_timer_reliable_states = LAPIC_TIMER_ALWAYS_RELIABLE;
 	else {
-		smp_call_function(__setup_broadcast_timer, (void *)true, 1);
+		on_each_cpu(__setup_broadcast_timer, (void *)true, 1);
 		register_cpu_notifier(&setup_broadcast_notifier);
 	}
 
@@ -471,71 +471,67 @@
 	}
 
 	if (auto_demotion_disable_flags)
-		smp_call_function(auto_demotion_disable, NULL, 1);
+		on_each_cpu(auto_demotion_disable, NULL, 1);
 
 	return 0;
 }
 
 
 /*
- * intel_idle_cpuidle_devices_init()
+ * intel_idle_cpu_init()
  * allocate, initialize, register cpuidle_devices
+ * @cpu: cpu/core to initialize
  */
-static int intel_idle_cpuidle_devices_init(void)
+int intel_idle_cpu_init(int cpu)
 {
-	int i, cstate;
+	int cstate;
 	struct cpuidle_device *dev;
 
-	intel_idle_cpuidle_devices = alloc_percpu(struct cpuidle_device);
-	if (intel_idle_cpuidle_devices == NULL)
-		return -ENOMEM;
+	dev = per_cpu_ptr(intel_idle_cpuidle_devices, cpu);
 
-	for_each_online_cpu(i) {
-		dev = per_cpu_ptr(intel_idle_cpuidle_devices, i);
+	dev->state_count = 1;
 
-		dev->state_count = 1;
+	for (cstate = 1; cstate < MWAIT_MAX_NUM_CSTATES; ++cstate) {
+		int num_substates;
 
-		for (cstate = 1; cstate < MWAIT_MAX_NUM_CSTATES; ++cstate) {
-			int num_substates;
+		if (cstate > max_cstate) {
+			printk(PREFIX "max_cstate %d reached\n",
+			       max_cstate);
+			break;
+		}
 
-			if (cstate > max_cstate) {
-				printk(PREFIX "max_cstate %d reached\n",
-					max_cstate);
-				break;
-			}
+		/* does the state exist in CPUID.MWAIT? */
+		num_substates = (mwait_substates >> ((cstate) * 4))
+			& MWAIT_SUBSTATE_MASK;
+		if (num_substates == 0)
+			continue;
+		/* is the state not enabled? */
+		if (cpuidle_state_table[cstate].enter == NULL)
+			continue;
 
-			/* does the state exist in CPUID.MWAIT? */
-			num_substates = (mwait_substates >> ((cstate) * 4))
-						& MWAIT_SUBSTATE_MASK;
-			if (num_substates == 0)
-				continue;
-			/* is the state not enabled? */
-			if (cpuidle_state_table[cstate].enter == NULL) {
-				continue;
-			}
-
-			dev->states_usage[dev->state_count].driver_data =
-				(void *)get_driver_data(cstate);
+		dev->states_usage[dev->state_count].driver_data =
+			(void *)get_driver_data(cstate);
 
 			dev->state_count += 1;
 		}
+	dev->cpu = cpu;
 
-		dev->cpu = i;
-		if (cpuidle_register_device(dev)) {
-			pr_debug(PREFIX "cpuidle_register_device %d failed!\n",
-				 i);
-			intel_idle_cpuidle_devices_uninit();
-			return -EIO;
-		}
+	if (cpuidle_register_device(dev)) {
+		pr_debug(PREFIX "cpuidle_register_device %d failed!\n", cpu);
+		intel_idle_cpuidle_devices_uninit();
+		return -EIO;
 	}
 
+	if (auto_demotion_disable_flags)
+		smp_call_function_single(cpu, auto_demotion_disable, NULL, 1);
+
 	return 0;
 }
 
 
 static int __init intel_idle_init(void)
 {
-	int retval;
+	int retval, i;
 
 	/* Do not load intel_idle at all for now if idle= is passed */
 	if (boot_option_idle_override != IDLE_NO_OVERRIDE)
@@ -553,10 +549,16 @@
 		return retval;
 	}
 
-	retval = intel_idle_cpuidle_devices_init();
-	if (retval) {
-		cpuidle_unregister_driver(&intel_idle_driver);
-		return retval;
+	intel_idle_cpuidle_devices = alloc_percpu(struct cpuidle_device);
+	if (intel_idle_cpuidle_devices == NULL)
+		return -ENOMEM;
+
+	for_each_online_cpu(i) {
+		retval = intel_idle_cpu_init(i);
+		if (retval) {
+			cpuidle_unregister_driver(&intel_idle_driver);
+			return retval;
+		}
 	}
 
 	return 0;
@@ -568,7 +570,7 @@
 	cpuidle_unregister_driver(&intel_idle_driver);
 
 	if (lapic_timer_reliable_states != LAPIC_TIMER_ALWAYS_RELIABLE) {
-		smp_call_function(__setup_broadcast_timer, (void *)false, 1);
+		on_each_cpu(__setup_broadcast_timer, (void *)false, 1);
 		unregister_cpu_notifier(&setup_broadcast_notifier);
 	}
 
diff --git a/drivers/infiniband/Kconfig b/drivers/infiniband/Kconfig
index 0f9a84c..eb0add3 100644
--- a/drivers/infiniband/Kconfig
+++ b/drivers/infiniband/Kconfig
@@ -55,6 +55,7 @@
 source "drivers/infiniband/ulp/ipoib/Kconfig"
 
 source "drivers/infiniband/ulp/srp/Kconfig"
+source "drivers/infiniband/ulp/srpt/Kconfig"
 
 source "drivers/infiniband/ulp/iser/Kconfig"
 
diff --git a/drivers/infiniband/Makefile b/drivers/infiniband/Makefile
index 9cc7a47..a3b2d8e 100644
--- a/drivers/infiniband/Makefile
+++ b/drivers/infiniband/Makefile
@@ -10,4 +10,5 @@
 obj-$(CONFIG_INFINIBAND_NES)		+= hw/nes/
 obj-$(CONFIG_INFINIBAND_IPOIB)		+= ulp/ipoib/
 obj-$(CONFIG_INFINIBAND_SRP)		+= ulp/srp/
+obj-$(CONFIG_INFINIBAND_SRPT)		+= ulp/srpt/
 obj-$(CONFIG_INFINIBAND_ISER)		+= ulp/iser/
diff --git a/drivers/infiniband/ulp/srpt/Kconfig b/drivers/infiniband/ulp/srpt/Kconfig
new file mode 100644
index 0000000..31ee83d
--- /dev/null
+++ b/drivers/infiniband/ulp/srpt/Kconfig
@@ -0,0 +1,12 @@
+config INFINIBAND_SRPT
+	tristate "InfiniBand SCSI RDMA Protocol target support"
+	depends on INFINIBAND && TARGET_CORE
+	---help---
+
+	  Support for the SCSI RDMA Protocol (SRP) Target driver. The
+	  SRP protocol is a protocol that allows an initiator to access
+	  a block storage device on another host (target) over a network
+	  that supports the RDMA protocol. Currently the RDMA protocol is
+	  supported by InfiniBand and by iWarp network hardware. More
+	  information about the SRP protocol can be found on the website
+	  of the INCITS T10 technical committee (http://www.t10.org/).
diff --git a/drivers/infiniband/ulp/srpt/Makefile b/drivers/infiniband/ulp/srpt/Makefile
new file mode 100644
index 0000000..e3ee4bd
--- /dev/null
+++ b/drivers/infiniband/ulp/srpt/Makefile
@@ -0,0 +1,2 @@
+ccflags-y			:= -Idrivers/target
+obj-$(CONFIG_INFINIBAND_SRPT)	+= ib_srpt.o
diff --git a/drivers/infiniband/ulp/srpt/ib_dm_mad.h b/drivers/infiniband/ulp/srpt/ib_dm_mad.h
new file mode 100644
index 0000000..fb1de1f
--- /dev/null
+++ b/drivers/infiniband/ulp/srpt/ib_dm_mad.h
@@ -0,0 +1,139 @@
+/*
+ * Copyright (c) 2006 - 2009 Mellanox Technology Inc.  All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#ifndef IB_DM_MAD_H
+#define IB_DM_MAD_H
+
+#include <linux/types.h>
+
+#include <rdma/ib_mad.h>
+
+enum {
+	/*
+	 * See also section 13.4.7 Status Field, table 115 MAD Common Status
+	 * Field Bit Values and also section 16.3.1.1 Status Field in the
+	 * InfiniBand Architecture Specification.
+	 */
+	DM_MAD_STATUS_UNSUP_METHOD = 0x0008,
+	DM_MAD_STATUS_UNSUP_METHOD_ATTR = 0x000c,
+	DM_MAD_STATUS_INVALID_FIELD = 0x001c,
+	DM_MAD_STATUS_NO_IOC = 0x0100,
+
+	/*
+	 * See also the Device Management chapter, section 16.3.3 Attributes,
+	 * table 279 Device Management Attributes in the InfiniBand
+	 * Architecture Specification.
+	 */
+	DM_ATTR_CLASS_PORT_INFO = 0x01,
+	DM_ATTR_IOU_INFO = 0x10,
+	DM_ATTR_IOC_PROFILE = 0x11,
+	DM_ATTR_SVC_ENTRIES = 0x12
+};
+
+struct ib_dm_hdr {
+	u8 reserved[28];
+};
+
+/*
+ * Structure of management datagram sent by the SRP target implementation.
+ * Contains a management datagram header, reliable multi-packet transaction
+ * protocol (RMPP) header and ib_dm_hdr. Notes:
+ * - The SRP target implementation does not use RMPP or ib_dm_hdr when sending
+ *   management datagrams.
+ * - The header size must be exactly 64 bytes (IB_MGMT_DEVICE_HDR), since this
+ *   is the header size that is passed to ib_create_send_mad() in ib_srpt.c.
+ * - The maximum supported size for a management datagram when not using RMPP
+ *   is 256 bytes -- 64 bytes header and 192 (IB_MGMT_DEVICE_DATA) bytes data.
+ */
+struct ib_dm_mad {
+	struct ib_mad_hdr mad_hdr;
+	struct ib_rmpp_hdr rmpp_hdr;
+	struct ib_dm_hdr dm_hdr;
+	u8 data[IB_MGMT_DEVICE_DATA];
+};
+
+/*
+ * IOUnitInfo as defined in section 16.3.3.3 IOUnitInfo of the InfiniBand
+ * Architecture Specification.
+ */
+struct ib_dm_iou_info {
+	__be16 change_id;
+	u8 max_controllers;
+	u8 op_rom;
+	u8 controller_list[128];
+};
+
+/*
+ * IOControllerprofile as defined in section 16.3.3.4 IOControllerProfile of
+ * the InfiniBand Architecture Specification.
+ */
+struct ib_dm_ioc_profile {
+	__be64 guid;
+	__be32 vendor_id;
+	__be32 device_id;
+	__be16 device_version;
+	__be16 reserved1;
+	__be32 subsys_vendor_id;
+	__be32 subsys_device_id;
+	__be16 io_class;
+	__be16 io_subclass;
+	__be16 protocol;
+	__be16 protocol_version;
+	__be16 service_conn;
+	__be16 initiators_supported;
+	__be16 send_queue_depth;
+	u8 reserved2;
+	u8 rdma_read_depth;
+	__be32 send_size;
+	__be32 rdma_size;
+	u8 op_cap_mask;
+	u8 svc_cap_mask;
+	u8 num_svc_entries;
+	u8 reserved3[9];
+	u8 id_string[64];
+};
+
+struct ib_dm_svc_entry {
+	u8 name[40];
+	__be64 id;
+};
+
+/*
+ * See also section 16.3.3.5 ServiceEntries in the InfiniBand Architecture
+ * Specification. See also section B.7, table B.8 in the T10 SRP r16a document.
+ */
+struct ib_dm_svc_entries {
+	struct ib_dm_svc_entry service_entries[4];
+};
+
+#endif
diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
new file mode 100644
index 0000000..cd5d05e
--- /dev/null
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
@@ -0,0 +1,4073 @@
+/*
+ * Copyright (c) 2006 - 2009 Mellanox Technology Inc.  All rights reserved.
+ * Copyright (C) 2008 - 2011 Bart Van Assche <bvanassche@acm.org>.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/err.h>
+#include <linux/ctype.h>
+#include <linux/kthread.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/atomic.h>
+#include <scsi/scsi_tcq.h>
+#include <target/configfs_macros.h>
+#include <target/target_core_base.h>
+#include <target/target_core_fabric_configfs.h>
+#include <target/target_core_fabric.h>
+#include <target/target_core_configfs.h>
+#include "ib_srpt.h"
+
+/* Name of this kernel module. */
+#define DRV_NAME		"ib_srpt"
+#define DRV_VERSION		"2.0.0"
+#define DRV_RELDATE		"2011-02-14"
+
+#define SRPT_ID_STRING	"Linux SRP target"
+
+#undef pr_fmt
+#define pr_fmt(fmt) DRV_NAME " " fmt
+
+MODULE_AUTHOR("Vu Pham and Bart Van Assche");
+MODULE_DESCRIPTION("InfiniBand SCSI RDMA Protocol target "
+		   "v" DRV_VERSION " (" DRV_RELDATE ")");
+MODULE_LICENSE("Dual BSD/GPL");
+
+/*
+ * Global Variables
+ */
+
+static u64 srpt_service_guid;
+static spinlock_t srpt_dev_lock;       /* Protects srpt_dev_list. */
+static struct list_head srpt_dev_list; /* List of srpt_device structures. */
+
+static unsigned srp_max_req_size = DEFAULT_MAX_REQ_SIZE;
+module_param(srp_max_req_size, int, 0444);
+MODULE_PARM_DESC(srp_max_req_size,
+		 "Maximum size of SRP request messages in bytes.");
+
+static int srpt_srq_size = DEFAULT_SRPT_SRQ_SIZE;
+module_param(srpt_srq_size, int, 0444);
+MODULE_PARM_DESC(srpt_srq_size,
+		 "Shared receive queue (SRQ) size.");
+
+static int srpt_get_u64_x(char *buffer, struct kernel_param *kp)
+{
+	return sprintf(buffer, "0x%016llx", *(u64 *)kp->arg);
+}
+module_param_call(srpt_service_guid, NULL, srpt_get_u64_x, &srpt_service_guid,
+		  0444);
+MODULE_PARM_DESC(srpt_service_guid,
+		 "Using this value for ioc_guid, id_ext, and cm_listen_id"
+		 " instead of using the node_guid of the first HCA.");
+
+static struct ib_client srpt_client;
+static struct target_fabric_configfs *srpt_target;
+static void srpt_release_channel(struct srpt_rdma_ch *ch);
+static int srpt_queue_status(struct se_cmd *cmd);
+
+/**
+ * opposite_dma_dir() - Swap DMA_TO_DEVICE and DMA_FROM_DEVICE.
+ */
+static inline
+enum dma_data_direction opposite_dma_dir(enum dma_data_direction dir)
+{
+	switch (dir) {
+	case DMA_TO_DEVICE:	return DMA_FROM_DEVICE;
+	case DMA_FROM_DEVICE:	return DMA_TO_DEVICE;
+	default:		return dir;
+	}
+}
+
+/**
+ * srpt_sdev_name() - Return the name associated with the HCA.
+ *
+ * Examples are ib0, ib1, ...
+ */
+static inline const char *srpt_sdev_name(struct srpt_device *sdev)
+{
+	return sdev->device->name;
+}
+
+static enum rdma_ch_state srpt_get_ch_state(struct srpt_rdma_ch *ch)
+{
+	unsigned long flags;
+	enum rdma_ch_state state;
+
+	spin_lock_irqsave(&ch->spinlock, flags);
+	state = ch->state;
+	spin_unlock_irqrestore(&ch->spinlock, flags);
+	return state;
+}
+
+static enum rdma_ch_state
+srpt_set_ch_state(struct srpt_rdma_ch *ch, enum rdma_ch_state new_state)
+{
+	unsigned long flags;
+	enum rdma_ch_state prev;
+
+	spin_lock_irqsave(&ch->spinlock, flags);
+	prev = ch->state;
+	ch->state = new_state;
+	spin_unlock_irqrestore(&ch->spinlock, flags);
+	return prev;
+}
+
+/**
+ * srpt_test_and_set_ch_state() - Test and set the channel state.
+ *
+ * Returns true if and only if the channel state has been set to the new state.
+ */
+static bool
+srpt_test_and_set_ch_state(struct srpt_rdma_ch *ch, enum rdma_ch_state old,
+			   enum rdma_ch_state new)
+{
+	unsigned long flags;
+	enum rdma_ch_state prev;
+
+	spin_lock_irqsave(&ch->spinlock, flags);
+	prev = ch->state;
+	if (prev == old)
+		ch->state = new;
+	spin_unlock_irqrestore(&ch->spinlock, flags);
+	return prev == old;
+}
+
+/**
+ * srpt_event_handler() - Asynchronous IB event callback function.
+ *
+ * Callback function called by the InfiniBand core when an asynchronous IB
+ * event occurs. This callback may occur in interrupt context. See also
+ * section 11.5.2, Set Asynchronous Event Handler in the InfiniBand
+ * Architecture Specification.
+ */
+static void srpt_event_handler(struct ib_event_handler *handler,
+			       struct ib_event *event)
+{
+	struct srpt_device *sdev;
+	struct srpt_port *sport;
+
+	sdev = ib_get_client_data(event->device, &srpt_client);
+	if (!sdev || sdev->device != event->device)
+		return;
+
+	pr_debug("ASYNC event= %d on device= %s\n", event->event,
+		 srpt_sdev_name(sdev));
+
+	switch (event->event) {
+	case IB_EVENT_PORT_ERR:
+		if (event->element.port_num <= sdev->device->phys_port_cnt) {
+			sport = &sdev->port[event->element.port_num - 1];
+			sport->lid = 0;
+			sport->sm_lid = 0;
+		}
+		break;
+	case IB_EVENT_PORT_ACTIVE:
+	case IB_EVENT_LID_CHANGE:
+	case IB_EVENT_PKEY_CHANGE:
+	case IB_EVENT_SM_CHANGE:
+	case IB_EVENT_CLIENT_REREGISTER:
+		/* Refresh port data asynchronously. */
+		if (event->element.port_num <= sdev->device->phys_port_cnt) {
+			sport = &sdev->port[event->element.port_num - 1];
+			if (!sport->lid && !sport->sm_lid)
+				schedule_work(&sport->work);
+		}
+		break;
+	default:
+		printk(KERN_ERR "received unrecognized IB event %d\n",
+		       event->event);
+		break;
+	}
+}
+
+/**
+ * srpt_srq_event() - SRQ event callback function.
+ */
+static void srpt_srq_event(struct ib_event *event, void *ctx)
+{
+	printk(KERN_INFO "SRQ event %d\n", event->event);
+}
+
+/**
+ * srpt_qp_event() - QP event callback function.
+ */
+static void srpt_qp_event(struct ib_event *event, struct srpt_rdma_ch *ch)
+{
+	pr_debug("QP event %d on cm_id=%p sess_name=%s state=%d\n",
+		 event->event, ch->cm_id, ch->sess_name, srpt_get_ch_state(ch));
+
+	switch (event->event) {
+	case IB_EVENT_COMM_EST:
+		ib_cm_notify(ch->cm_id, event->event);
+		break;
+	case IB_EVENT_QP_LAST_WQE_REACHED:
+		if (srpt_test_and_set_ch_state(ch, CH_DRAINING,
+					       CH_RELEASING))
+			srpt_release_channel(ch);
+		else
+			pr_debug("%s: state %d - ignored LAST_WQE.\n",
+				 ch->sess_name, srpt_get_ch_state(ch));
+		break;
+	default:
+		printk(KERN_ERR "received unrecognized IB QP event %d\n",
+		       event->event);
+		break;
+	}
+}
+
+/**
+ * srpt_set_ioc() - Helper function for initializing an IOUnitInfo structure.
+ *
+ * @slot: one-based slot number.
+ * @value: four-bit value.
+ *
+ * Copies the lowest four bits of value in element slot of the array of four
+ * bit elements called c_list (controller list). The index slot is one-based.
+ */
+static void srpt_set_ioc(u8 *c_list, u32 slot, u8 value)
+{
+	u16 id;
+	u8 tmp;
+
+	id = (slot - 1) / 2;
+	if (slot & 0x1) {
+		tmp = c_list[id] & 0xf;
+		c_list[id] = (value << 4) | tmp;
+	} else {
+		tmp = c_list[id] & 0xf0;
+		c_list[id] = (value & 0xf) | tmp;
+	}
+}
+
+/**
+ * srpt_get_class_port_info() - Copy ClassPortInfo to a management datagram.
+ *
+ * See also section 16.3.3.1 ClassPortInfo in the InfiniBand Architecture
+ * Specification.
+ */
+static void srpt_get_class_port_info(struct ib_dm_mad *mad)
+{
+	struct ib_class_port_info *cif;
+
+	cif = (struct ib_class_port_info *)mad->data;
+	memset(cif, 0, sizeof *cif);
+	cif->base_version = 1;
+	cif->class_version = 1;
+	cif->resp_time_value = 20;
+
+	mad->mad_hdr.status = 0;
+}
+
+/**
+ * srpt_get_iou() - Write IOUnitInfo to a management datagram.
+ *
+ * See also section 16.3.3.3 IOUnitInfo in the InfiniBand Architecture
+ * Specification. See also section B.7, table B.6 in the SRP r16a document.
+ */
+static void srpt_get_iou(struct ib_dm_mad *mad)
+{
+	struct ib_dm_iou_info *ioui;
+	u8 slot;
+	int i;
+
+	ioui = (struct ib_dm_iou_info *)mad->data;
+	ioui->change_id = __constant_cpu_to_be16(1);
+	ioui->max_controllers = 16;
+
+	/* set present for slot 1 and empty for the rest */
+	srpt_set_ioc(ioui->controller_list, 1, 1);
+	for (i = 1, slot = 2; i < 16; i++, slot++)
+		srpt_set_ioc(ioui->controller_list, slot, 0);
+
+	mad->mad_hdr.status = 0;
+}
+
+/**
+ * srpt_get_ioc() - Write IOControllerprofile to a management datagram.
+ *
+ * See also section 16.3.3.4 IOControllerProfile in the InfiniBand
+ * Architecture Specification. See also section B.7, table B.7 in the SRP
+ * r16a document.
+ */
+static void srpt_get_ioc(struct srpt_port *sport, u32 slot,
+			 struct ib_dm_mad *mad)
+{
+	struct srpt_device *sdev = sport->sdev;
+	struct ib_dm_ioc_profile *iocp;
+
+	iocp = (struct ib_dm_ioc_profile *)mad->data;
+
+	if (!slot || slot > 16) {
+		mad->mad_hdr.status
+			= __constant_cpu_to_be16(DM_MAD_STATUS_INVALID_FIELD);
+		return;
+	}
+
+	if (slot > 2) {
+		mad->mad_hdr.status
+			= __constant_cpu_to_be16(DM_MAD_STATUS_NO_IOC);
+		return;
+	}
+
+	memset(iocp, 0, sizeof *iocp);
+	strcpy(iocp->id_string, SRPT_ID_STRING);
+	iocp->guid = cpu_to_be64(srpt_service_guid);
+	iocp->vendor_id = cpu_to_be32(sdev->dev_attr.vendor_id);
+	iocp->device_id = cpu_to_be32(sdev->dev_attr.vendor_part_id);
+	iocp->device_version = cpu_to_be16(sdev->dev_attr.hw_ver);
+	iocp->subsys_vendor_id = cpu_to_be32(sdev->dev_attr.vendor_id);
+	iocp->subsys_device_id = 0x0;
+	iocp->io_class = __constant_cpu_to_be16(SRP_REV16A_IB_IO_CLASS);
+	iocp->io_subclass = __constant_cpu_to_be16(SRP_IO_SUBCLASS);
+	iocp->protocol = __constant_cpu_to_be16(SRP_PROTOCOL);
+	iocp->protocol_version = __constant_cpu_to_be16(SRP_PROTOCOL_VERSION);
+	iocp->send_queue_depth = cpu_to_be16(sdev->srq_size);
+	iocp->rdma_read_depth = 4;
+	iocp->send_size = cpu_to_be32(srp_max_req_size);
+	iocp->rdma_size = cpu_to_be32(min(sport->port_attrib.srp_max_rdma_size,
+					  1U << 24));
+	iocp->num_svc_entries = 1;
+	iocp->op_cap_mask = SRP_SEND_TO_IOC | SRP_SEND_FROM_IOC |
+		SRP_RDMA_READ_FROM_IOC | SRP_RDMA_WRITE_FROM_IOC;
+
+	mad->mad_hdr.status = 0;
+}
+
+/**
+ * srpt_get_svc_entries() - Write ServiceEntries to a management datagram.
+ *
+ * See also section 16.3.3.5 ServiceEntries in the InfiniBand Architecture
+ * Specification. See also section B.7, table B.8 in the SRP r16a document.
+ */
+static void srpt_get_svc_entries(u64 ioc_guid,
+				 u16 slot, u8 hi, u8 lo, struct ib_dm_mad *mad)
+{
+	struct ib_dm_svc_entries *svc_entries;
+
+	WARN_ON(!ioc_guid);
+
+	if (!slot || slot > 16) {
+		mad->mad_hdr.status
+			= __constant_cpu_to_be16(DM_MAD_STATUS_INVALID_FIELD);
+		return;
+	}
+
+	if (slot > 2 || lo > hi || hi > 1) {
+		mad->mad_hdr.status
+			= __constant_cpu_to_be16(DM_MAD_STATUS_NO_IOC);
+		return;
+	}
+
+	svc_entries = (struct ib_dm_svc_entries *)mad->data;
+	memset(svc_entries, 0, sizeof *svc_entries);
+	svc_entries->service_entries[0].id = cpu_to_be64(ioc_guid);
+	snprintf(svc_entries->service_entries[0].name,
+		 sizeof(svc_entries->service_entries[0].name),
+		 "%s%016llx",
+		 SRP_SERVICE_NAME_PREFIX,
+		 ioc_guid);
+
+	mad->mad_hdr.status = 0;
+}
+
+/**
+ * srpt_mgmt_method_get() - Process a received management datagram.
+ * @sp:      source port through which the MAD has been received.
+ * @rq_mad:  received MAD.
+ * @rsp_mad: response MAD.
+ */
+static void srpt_mgmt_method_get(struct srpt_port *sp, struct ib_mad *rq_mad,
+				 struct ib_dm_mad *rsp_mad)
+{
+	u16 attr_id;
+	u32 slot;
+	u8 hi, lo;
+
+	attr_id = be16_to_cpu(rq_mad->mad_hdr.attr_id);
+	switch (attr_id) {
+	case DM_ATTR_CLASS_PORT_INFO:
+		srpt_get_class_port_info(rsp_mad);
+		break;
+	case DM_ATTR_IOU_INFO:
+		srpt_get_iou(rsp_mad);
+		break;
+	case DM_ATTR_IOC_PROFILE:
+		slot = be32_to_cpu(rq_mad->mad_hdr.attr_mod);
+		srpt_get_ioc(sp, slot, rsp_mad);
+		break;
+	case DM_ATTR_SVC_ENTRIES:
+		slot = be32_to_cpu(rq_mad->mad_hdr.attr_mod);
+		hi = (u8) ((slot >> 8) & 0xff);
+		lo = (u8) (slot & 0xff);
+		slot = (u16) ((slot >> 16) & 0xffff);
+		srpt_get_svc_entries(srpt_service_guid,
+				     slot, hi, lo, rsp_mad);
+		break;
+	default:
+		rsp_mad->mad_hdr.status =
+		    __constant_cpu_to_be16(DM_MAD_STATUS_UNSUP_METHOD_ATTR);
+		break;
+	}
+}
+
+/**
+ * srpt_mad_send_handler() - Post MAD-send callback function.
+ */
+static void srpt_mad_send_handler(struct ib_mad_agent *mad_agent,
+				  struct ib_mad_send_wc *mad_wc)
+{
+	ib_destroy_ah(mad_wc->send_buf->ah);
+	ib_free_send_mad(mad_wc->send_buf);
+}
+
+/**
+ * srpt_mad_recv_handler() - MAD reception callback function.
+ */
+static void srpt_mad_recv_handler(struct ib_mad_agent *mad_agent,
+				  struct ib_mad_recv_wc *mad_wc)
+{
+	struct srpt_port *sport = (struct srpt_port *)mad_agent->context;
+	struct ib_ah *ah;
+	struct ib_mad_send_buf *rsp;
+	struct ib_dm_mad *dm_mad;
+
+	if (!mad_wc || !mad_wc->recv_buf.mad)
+		return;
+
+	ah = ib_create_ah_from_wc(mad_agent->qp->pd, mad_wc->wc,
+				  mad_wc->recv_buf.grh, mad_agent->port_num);
+	if (IS_ERR(ah))
+		goto err;
+
+	BUILD_BUG_ON(offsetof(struct ib_dm_mad, data) != IB_MGMT_DEVICE_HDR);
+
+	rsp = ib_create_send_mad(mad_agent, mad_wc->wc->src_qp,
+				 mad_wc->wc->pkey_index, 0,
+				 IB_MGMT_DEVICE_HDR, IB_MGMT_DEVICE_DATA,
+				 GFP_KERNEL);
+	if (IS_ERR(rsp))
+		goto err_rsp;
+
+	rsp->ah = ah;
+
+	dm_mad = rsp->mad;
+	memcpy(dm_mad, mad_wc->recv_buf.mad, sizeof *dm_mad);
+	dm_mad->mad_hdr.method = IB_MGMT_METHOD_GET_RESP;
+	dm_mad->mad_hdr.status = 0;
+
+	switch (mad_wc->recv_buf.mad->mad_hdr.method) {
+	case IB_MGMT_METHOD_GET:
+		srpt_mgmt_method_get(sport, mad_wc->recv_buf.mad, dm_mad);
+		break;
+	case IB_MGMT_METHOD_SET:
+		dm_mad->mad_hdr.status =
+		    __constant_cpu_to_be16(DM_MAD_STATUS_UNSUP_METHOD_ATTR);
+		break;
+	default:
+		dm_mad->mad_hdr.status =
+		    __constant_cpu_to_be16(DM_MAD_STATUS_UNSUP_METHOD);
+		break;
+	}
+
+	if (!ib_post_send_mad(rsp, NULL)) {
+		ib_free_recv_mad(mad_wc);
+		/* will destroy_ah & free_send_mad in send completion */
+		return;
+	}
+
+	ib_free_send_mad(rsp);
+
+err_rsp:
+	ib_destroy_ah(ah);
+err:
+	ib_free_recv_mad(mad_wc);
+}
+
+/**
+ * srpt_refresh_port() - Configure a HCA port.
+ *
+ * Enable InfiniBand management datagram processing, update the cached sm_lid,
+ * lid and gid values, and register a callback function for processing MADs
+ * on the specified port.
+ *
+ * Note: It is safe to call this function more than once for the same port.
+ */
+static int srpt_refresh_port(struct srpt_port *sport)
+{
+	struct ib_mad_reg_req reg_req;
+	struct ib_port_modify port_modify;
+	struct ib_port_attr port_attr;
+	int ret;
+
+	memset(&port_modify, 0, sizeof port_modify);
+	port_modify.set_port_cap_mask = IB_PORT_DEVICE_MGMT_SUP;
+	port_modify.clr_port_cap_mask = 0;
+
+	ret = ib_modify_port(sport->sdev->device, sport->port, 0, &port_modify);
+	if (ret)
+		goto err_mod_port;
+
+	ret = ib_query_port(sport->sdev->device, sport->port, &port_attr);
+	if (ret)
+		goto err_query_port;
+
+	sport->sm_lid = port_attr.sm_lid;
+	sport->lid = port_attr.lid;
+
+	ret = ib_query_gid(sport->sdev->device, sport->port, 0, &sport->gid);
+	if (ret)
+		goto err_query_port;
+
+	if (!sport->mad_agent) {
+		memset(&reg_req, 0, sizeof reg_req);
+		reg_req.mgmt_class = IB_MGMT_CLASS_DEVICE_MGMT;
+		reg_req.mgmt_class_version = IB_MGMT_BASE_VERSION;
+		set_bit(IB_MGMT_METHOD_GET, reg_req.method_mask);
+		set_bit(IB_MGMT_METHOD_SET, reg_req.method_mask);
+
+		sport->mad_agent = ib_register_mad_agent(sport->sdev->device,
+							 sport->port,
+							 IB_QPT_GSI,
+							 &reg_req, 0,
+							 srpt_mad_send_handler,
+							 srpt_mad_recv_handler,
+							 sport);
+		if (IS_ERR(sport->mad_agent)) {
+			ret = PTR_ERR(sport->mad_agent);
+			sport->mad_agent = NULL;
+			goto err_query_port;
+		}
+	}
+
+	return 0;
+
+err_query_port:
+
+	port_modify.set_port_cap_mask = 0;
+	port_modify.clr_port_cap_mask = IB_PORT_DEVICE_MGMT_SUP;
+	ib_modify_port(sport->sdev->device, sport->port, 0, &port_modify);
+
+err_mod_port:
+
+	return ret;
+}
+
+/**
+ * srpt_unregister_mad_agent() - Unregister MAD callback functions.
+ *
+ * Note: It is safe to call this function more than once for the same device.
+ */
+static void srpt_unregister_mad_agent(struct srpt_device *sdev)
+{
+	struct ib_port_modify port_modify = {
+		.clr_port_cap_mask = IB_PORT_DEVICE_MGMT_SUP,
+	};
+	struct srpt_port *sport;
+	int i;
+
+	for (i = 1; i <= sdev->device->phys_port_cnt; i++) {
+		sport = &sdev->port[i - 1];
+		WARN_ON(sport->port != i);
+		if (ib_modify_port(sdev->device, i, 0, &port_modify) < 0)
+			printk(KERN_ERR "disabling MAD processing failed.\n");
+		if (sport->mad_agent) {
+			ib_unregister_mad_agent(sport->mad_agent);
+			sport->mad_agent = NULL;
+		}
+	}
+}
+
+/**
+ * srpt_alloc_ioctx() - Allocate an SRPT I/O context structure.
+ */
+static struct srpt_ioctx *srpt_alloc_ioctx(struct srpt_device *sdev,
+					   int ioctx_size, int dma_size,
+					   enum dma_data_direction dir)
+{
+	struct srpt_ioctx *ioctx;
+
+	ioctx = kmalloc(ioctx_size, GFP_KERNEL);
+	if (!ioctx)
+		goto err;
+
+	ioctx->buf = kmalloc(dma_size, GFP_KERNEL);
+	if (!ioctx->buf)
+		goto err_free_ioctx;
+
+	ioctx->dma = ib_dma_map_single(sdev->device, ioctx->buf, dma_size, dir);
+	if (ib_dma_mapping_error(sdev->device, ioctx->dma))
+		goto err_free_buf;
+
+	return ioctx;
+
+err_free_buf:
+	kfree(ioctx->buf);
+err_free_ioctx:
+	kfree(ioctx);
+err:
+	return NULL;
+}
+
+/**
+ * srpt_free_ioctx() - Free an SRPT I/O context structure.
+ */
+static void srpt_free_ioctx(struct srpt_device *sdev, struct srpt_ioctx *ioctx,
+			    int dma_size, enum dma_data_direction dir)
+{
+	if (!ioctx)
+		return;
+
+	ib_dma_unmap_single(sdev->device, ioctx->dma, dma_size, dir);
+	kfree(ioctx->buf);
+	kfree(ioctx);
+}
+
+/**
+ * srpt_alloc_ioctx_ring() - Allocate a ring of SRPT I/O context structures.
+ * @sdev:       Device to allocate the I/O context ring for.
+ * @ring_size:  Number of elements in the I/O context ring.
+ * @ioctx_size: I/O context size.
+ * @dma_size:   DMA buffer size.
+ * @dir:        DMA data direction.
+ */
+static struct srpt_ioctx **srpt_alloc_ioctx_ring(struct srpt_device *sdev,
+				int ring_size, int ioctx_size,
+				int dma_size, enum dma_data_direction dir)
+{
+	struct srpt_ioctx **ring;
+	int i;
+
+	WARN_ON(ioctx_size != sizeof(struct srpt_recv_ioctx)
+		&& ioctx_size != sizeof(struct srpt_send_ioctx));
+
+	ring = kmalloc(ring_size * sizeof(ring[0]), GFP_KERNEL);
+	if (!ring)
+		goto out;
+	for (i = 0; i < ring_size; ++i) {
+		ring[i] = srpt_alloc_ioctx(sdev, ioctx_size, dma_size, dir);
+		if (!ring[i])
+			goto err;
+		ring[i]->index = i;
+	}
+	goto out;
+
+err:
+	while (--i >= 0)
+		srpt_free_ioctx(sdev, ring[i], dma_size, dir);
+	kfree(ring);
+out:
+	return ring;
+}
+
+/**
+ * srpt_free_ioctx_ring() - Free the ring of SRPT I/O context structures.
+ */
+static void srpt_free_ioctx_ring(struct srpt_ioctx **ioctx_ring,
+				 struct srpt_device *sdev, int ring_size,
+				 int dma_size, enum dma_data_direction dir)
+{
+	int i;
+
+	for (i = 0; i < ring_size; ++i)
+		srpt_free_ioctx(sdev, ioctx_ring[i], dma_size, dir);
+	kfree(ioctx_ring);
+}
+
+/**
+ * srpt_get_cmd_state() - Get the state of a SCSI command.
+ */
+static enum srpt_command_state srpt_get_cmd_state(struct srpt_send_ioctx *ioctx)
+{
+	enum srpt_command_state state;
+	unsigned long flags;
+
+	BUG_ON(!ioctx);
+
+	spin_lock_irqsave(&ioctx->spinlock, flags);
+	state = ioctx->state;
+	spin_unlock_irqrestore(&ioctx->spinlock, flags);
+	return state;
+}
+
+/**
+ * srpt_set_cmd_state() - Set the state of a SCSI command.
+ *
+ * Does not modify the state of aborted commands. Returns the previous command
+ * state.
+ */
+static enum srpt_command_state srpt_set_cmd_state(struct srpt_send_ioctx *ioctx,
+						  enum srpt_command_state new)
+{
+	enum srpt_command_state previous;
+	unsigned long flags;
+
+	BUG_ON(!ioctx);
+
+	spin_lock_irqsave(&ioctx->spinlock, flags);
+	previous = ioctx->state;
+	if (previous != SRPT_STATE_DONE)
+		ioctx->state = new;
+	spin_unlock_irqrestore(&ioctx->spinlock, flags);
+
+	return previous;
+}
+
+/**
+ * srpt_test_and_set_cmd_state() - Test and set the state of a command.
+ *
+ * Returns true if and only if the previous command state was equal to 'old'.
+ */
+static bool srpt_test_and_set_cmd_state(struct srpt_send_ioctx *ioctx,
+					enum srpt_command_state old,
+					enum srpt_command_state new)
+{
+	enum srpt_command_state previous;
+	unsigned long flags;
+
+	WARN_ON(!ioctx);
+	WARN_ON(old == SRPT_STATE_DONE);
+	WARN_ON(new == SRPT_STATE_NEW);
+
+	spin_lock_irqsave(&ioctx->spinlock, flags);
+	previous = ioctx->state;
+	if (previous == old)
+		ioctx->state = new;
+	spin_unlock_irqrestore(&ioctx->spinlock, flags);
+	return previous == old;
+}
+
+/**
+ * srpt_post_recv() - Post an IB receive request.
+ */
+static int srpt_post_recv(struct srpt_device *sdev,
+			  struct srpt_recv_ioctx *ioctx)
+{
+	struct ib_sge list;
+	struct ib_recv_wr wr, *bad_wr;
+
+	BUG_ON(!sdev);
+	wr.wr_id = encode_wr_id(SRPT_RECV, ioctx->ioctx.index);
+
+	list.addr = ioctx->ioctx.dma;
+	list.length = srp_max_req_size;
+	list.lkey = sdev->mr->lkey;
+
+	wr.next = NULL;
+	wr.sg_list = &list;
+	wr.num_sge = 1;
+
+	return ib_post_srq_recv(sdev->srq, &wr, &bad_wr);
+}
+
+/**
+ * srpt_post_send() - Post an IB send request.
+ *
+ * Returns zero upon success and a non-zero value upon failure.
+ */
+static int srpt_post_send(struct srpt_rdma_ch *ch,
+			  struct srpt_send_ioctx *ioctx, int len)
+{
+	struct ib_sge list;
+	struct ib_send_wr wr, *bad_wr;
+	struct srpt_device *sdev = ch->sport->sdev;
+	int ret;
+
+	atomic_inc(&ch->req_lim);
+
+	ret = -ENOMEM;
+	if (unlikely(atomic_dec_return(&ch->sq_wr_avail) < 0)) {
+		printk(KERN_WARNING "IB send queue full (needed 1)\n");
+		goto out;
+	}
+
+	ib_dma_sync_single_for_device(sdev->device, ioctx->ioctx.dma, len,
+				      DMA_TO_DEVICE);
+
+	list.addr = ioctx->ioctx.dma;
+	list.length = len;
+	list.lkey = sdev->mr->lkey;
+
+	wr.next = NULL;
+	wr.wr_id = encode_wr_id(SRPT_SEND, ioctx->ioctx.index);
+	wr.sg_list = &list;
+	wr.num_sge = 1;
+	wr.opcode = IB_WR_SEND;
+	wr.send_flags = IB_SEND_SIGNALED;
+
+	ret = ib_post_send(ch->qp, &wr, &bad_wr);
+
+out:
+	if (ret < 0) {
+		atomic_inc(&ch->sq_wr_avail);
+		atomic_dec(&ch->req_lim);
+	}
+	return ret;
+}
+
+/**
+ * srpt_get_desc_tbl() - Parse the data descriptors of an SRP_CMD request.
+ * @ioctx: Pointer to the I/O context associated with the request.
+ * @srp_cmd: Pointer to the SRP_CMD request data.
+ * @dir: Pointer to the variable to which the transfer direction will be
+ *   written.
+ * @data_len: Pointer to the variable to which the total data length of all
+ *   descriptors in the SRP_CMD request will be written.
+ *
+ * This function initializes ioctx->nrbuf and ioctx->r_bufs.
+ *
+ * Returns -EINVAL when the SRP_CMD request contains inconsistent descriptors;
+ * -ENOMEM when memory allocation fails and zero upon success.
+ */
+static int srpt_get_desc_tbl(struct srpt_send_ioctx *ioctx,
+			     struct srp_cmd *srp_cmd,
+			     enum dma_data_direction *dir, u64 *data_len)
+{
+	struct srp_indirect_buf *idb;
+	struct srp_direct_buf *db;
+	unsigned add_cdb_offset;
+	int ret;
+
+	/*
+	 * The pointer computations below will only be compiled correctly
+	 * if srp_cmd::add_data is declared as s8*, u8*, s8[] or u8[], so check
+	 * whether srp_cmd::add_data has been declared as a byte pointer.
+	 */
+	BUILD_BUG_ON(!__same_type(srp_cmd->add_data[0], (s8)0)
+		     && !__same_type(srp_cmd->add_data[0], (u8)0));
+
+	BUG_ON(!dir);
+	BUG_ON(!data_len);
+
+	ret = 0;
+	*data_len = 0;
+
+	/*
+	 * The lower four bits of the buffer format field contain the DATA-IN
+	 * buffer descriptor format, and the highest four bits contain the
+	 * DATA-OUT buffer descriptor format.
+	 */
+	*dir = DMA_NONE;
+	if (srp_cmd->buf_fmt & 0xf)
+		/* DATA-IN: transfer data from target to initiator (read). */
+		*dir = DMA_FROM_DEVICE;
+	else if (srp_cmd->buf_fmt >> 4)
+		/* DATA-OUT: transfer data from initiator to target (write). */
+		*dir = DMA_TO_DEVICE;
+
+	/*
+	 * According to the SRP spec, the lower two bits of the 'ADDITIONAL
+	 * CDB LENGTH' field are reserved and the size in bytes of this field
+	 * is four times the value specified in bits 3..7. Hence the "& ~3".
+	 */
+	add_cdb_offset = srp_cmd->add_cdb_len & ~3;
+	if (((srp_cmd->buf_fmt & 0xf) == SRP_DATA_DESC_DIRECT) ||
+	    ((srp_cmd->buf_fmt >> 4) == SRP_DATA_DESC_DIRECT)) {
+		ioctx->n_rbuf = 1;
+		ioctx->rbufs = &ioctx->single_rbuf;
+
+		db = (struct srp_direct_buf *)(srp_cmd->add_data
+					       + add_cdb_offset);
+		memcpy(ioctx->rbufs, db, sizeof *db);
+		*data_len = be32_to_cpu(db->len);
+	} else if (((srp_cmd->buf_fmt & 0xf) == SRP_DATA_DESC_INDIRECT) ||
+		   ((srp_cmd->buf_fmt >> 4) == SRP_DATA_DESC_INDIRECT)) {
+		idb = (struct srp_indirect_buf *)(srp_cmd->add_data
+						  + add_cdb_offset);
+
+		ioctx->n_rbuf = be32_to_cpu(idb->table_desc.len) / sizeof *db;
+
+		if (ioctx->n_rbuf >
+		    (srp_cmd->data_out_desc_cnt + srp_cmd->data_in_desc_cnt)) {
+			printk(KERN_ERR "received unsupported SRP_CMD request"
+			       " type (%u out + %u in != %u / %zu)\n",
+			       srp_cmd->data_out_desc_cnt,
+			       srp_cmd->data_in_desc_cnt,
+			       be32_to_cpu(idb->table_desc.len),
+			       sizeof(*db));
+			ioctx->n_rbuf = 0;
+			ret = -EINVAL;
+			goto out;
+		}
+
+		if (ioctx->n_rbuf == 1)
+			ioctx->rbufs = &ioctx->single_rbuf;
+		else {
+			ioctx->rbufs =
+				kmalloc(ioctx->n_rbuf * sizeof *db, GFP_ATOMIC);
+			if (!ioctx->rbufs) {
+				ioctx->n_rbuf = 0;
+				ret = -ENOMEM;
+				goto out;
+			}
+		}
+
+		db = idb->desc_list;
+		memcpy(ioctx->rbufs, db, ioctx->n_rbuf * sizeof *db);
+		*data_len = be32_to_cpu(idb->len);
+	}
+out:
+	return ret;
+}
+
+/**
+ * srpt_init_ch_qp() - Initialize queue pair attributes.
+ *
+ * Initialized the attributes of queue pair 'qp' by allowing local write,
+ * remote read and remote write. Also transitions 'qp' to state IB_QPS_INIT.
+ */
+static int srpt_init_ch_qp(struct srpt_rdma_ch *ch, struct ib_qp *qp)
+{
+	struct ib_qp_attr *attr;
+	int ret;
+
+	attr = kzalloc(sizeof *attr, GFP_KERNEL);
+	if (!attr)
+		return -ENOMEM;
+
+	attr->qp_state = IB_QPS_INIT;
+	attr->qp_access_flags = IB_ACCESS_LOCAL_WRITE | IB_ACCESS_REMOTE_READ |
+	    IB_ACCESS_REMOTE_WRITE;
+	attr->port_num = ch->sport->port;
+	attr->pkey_index = 0;
+
+	ret = ib_modify_qp(qp, attr,
+			   IB_QP_STATE | IB_QP_ACCESS_FLAGS | IB_QP_PORT |
+			   IB_QP_PKEY_INDEX);
+
+	kfree(attr);
+	return ret;
+}
+
+/**
+ * srpt_ch_qp_rtr() - Change the state of a channel to 'ready to receive' (RTR).
+ * @ch: channel of the queue pair.
+ * @qp: queue pair to change the state of.
+ *
+ * Returns zero upon success and a negative value upon failure.
+ *
+ * Note: currently a struct ib_qp_attr takes 136 bytes on a 64-bit system.
+ * If this structure ever becomes larger, it might be necessary to allocate
+ * it dynamically instead of on the stack.
+ */
+static int srpt_ch_qp_rtr(struct srpt_rdma_ch *ch, struct ib_qp *qp)
+{
+	struct ib_qp_attr qp_attr;
+	int attr_mask;
+	int ret;
+
+	qp_attr.qp_state = IB_QPS_RTR;
+	ret = ib_cm_init_qp_attr(ch->cm_id, &qp_attr, &attr_mask);
+	if (ret)
+		goto out;
+
+	qp_attr.max_dest_rd_atomic = 4;
+
+	ret = ib_modify_qp(qp, &qp_attr, attr_mask);
+
+out:
+	return ret;
+}
+
+/**
+ * srpt_ch_qp_rts() - Change the state of a channel to 'ready to send' (RTS).
+ * @ch: channel of the queue pair.
+ * @qp: queue pair to change the state of.
+ *
+ * Returns zero upon success and a negative value upon failure.
+ *
+ * Note: currently a struct ib_qp_attr takes 136 bytes on a 64-bit system.
+ * If this structure ever becomes larger, it might be necessary to allocate
+ * it dynamically instead of on the stack.
+ */
+static int srpt_ch_qp_rts(struct srpt_rdma_ch *ch, struct ib_qp *qp)
+{
+	struct ib_qp_attr qp_attr;
+	int attr_mask;
+	int ret;
+
+	qp_attr.qp_state = IB_QPS_RTS;
+	ret = ib_cm_init_qp_attr(ch->cm_id, &qp_attr, &attr_mask);
+	if (ret)
+		goto out;
+
+	qp_attr.max_rd_atomic = 4;
+
+	ret = ib_modify_qp(qp, &qp_attr, attr_mask);
+
+out:
+	return ret;
+}
+
+/**
+ * srpt_ch_qp_err() - Set the channel queue pair state to 'error'.
+ */
+static int srpt_ch_qp_err(struct srpt_rdma_ch *ch)
+{
+	struct ib_qp_attr qp_attr;
+
+	qp_attr.qp_state = IB_QPS_ERR;
+	return ib_modify_qp(ch->qp, &qp_attr, IB_QP_STATE);
+}
+
+/**
+ * srpt_unmap_sg_to_ib_sge() - Unmap an IB SGE list.
+ */
+static void srpt_unmap_sg_to_ib_sge(struct srpt_rdma_ch *ch,
+				    struct srpt_send_ioctx *ioctx)
+{
+	struct scatterlist *sg;
+	enum dma_data_direction dir;
+
+	BUG_ON(!ch);
+	BUG_ON(!ioctx);
+	BUG_ON(ioctx->n_rdma && !ioctx->rdma_ius);
+
+	while (ioctx->n_rdma)
+		kfree(ioctx->rdma_ius[--ioctx->n_rdma].sge);
+
+	kfree(ioctx->rdma_ius);
+	ioctx->rdma_ius = NULL;
+
+	if (ioctx->mapped_sg_count) {
+		sg = ioctx->sg;
+		WARN_ON(!sg);
+		dir = ioctx->cmd.data_direction;
+		BUG_ON(dir == DMA_NONE);
+		ib_dma_unmap_sg(ch->sport->sdev->device, sg, ioctx->sg_cnt,
+				opposite_dma_dir(dir));
+		ioctx->mapped_sg_count = 0;
+	}
+}
+
+/**
+ * srpt_map_sg_to_ib_sge() - Map an SG list to an IB SGE list.
+ */
+static int srpt_map_sg_to_ib_sge(struct srpt_rdma_ch *ch,
+				 struct srpt_send_ioctx *ioctx)
+{
+	struct se_cmd *cmd;
+	struct scatterlist *sg, *sg_orig;
+	int sg_cnt;
+	enum dma_data_direction dir;
+	struct rdma_iu *riu;
+	struct srp_direct_buf *db;
+	dma_addr_t dma_addr;
+	struct ib_sge *sge;
+	u64 raddr;
+	u32 rsize;
+	u32 tsize;
+	u32 dma_len;
+	int count, nrdma;
+	int i, j, k;
+
+	BUG_ON(!ch);
+	BUG_ON(!ioctx);
+	cmd = &ioctx->cmd;
+	dir = cmd->data_direction;
+	BUG_ON(dir == DMA_NONE);
+
+	transport_do_task_sg_chain(cmd);
+	ioctx->sg = sg = sg_orig = cmd->t_tasks_sg_chained;
+	ioctx->sg_cnt = sg_cnt = cmd->t_tasks_sg_chained_no;
+
+	count = ib_dma_map_sg(ch->sport->sdev->device, sg, sg_cnt,
+			      opposite_dma_dir(dir));
+	if (unlikely(!count))
+		return -EAGAIN;
+
+	ioctx->mapped_sg_count = count;
+
+	if (ioctx->rdma_ius && ioctx->n_rdma_ius)
+		nrdma = ioctx->n_rdma_ius;
+	else {
+		nrdma = (count + SRPT_DEF_SG_PER_WQE - 1) / SRPT_DEF_SG_PER_WQE
+			+ ioctx->n_rbuf;
+
+		ioctx->rdma_ius = kzalloc(nrdma * sizeof *riu, GFP_KERNEL);
+		if (!ioctx->rdma_ius)
+			goto free_mem;
+
+		ioctx->n_rdma_ius = nrdma;
+	}
+
+	db = ioctx->rbufs;
+	tsize = cmd->data_length;
+	dma_len = sg_dma_len(&sg[0]);
+	riu = ioctx->rdma_ius;
+
+	/*
+	 * For each remote desc - calculate the #ib_sge.
+	 * If #ib_sge < SRPT_DEF_SG_PER_WQE per rdma operation then
+	 *      each remote desc rdma_iu is required a rdma wr;
+	 * else
+	 *      we need to allocate extra rdma_iu to carry extra #ib_sge in
+	 *      another rdma wr
+	 */
+	for (i = 0, j = 0;
+	     j < count && i < ioctx->n_rbuf && tsize > 0; ++i, ++riu, ++db) {
+		rsize = be32_to_cpu(db->len);
+		raddr = be64_to_cpu(db->va);
+		riu->raddr = raddr;
+		riu->rkey = be32_to_cpu(db->key);
+		riu->sge_cnt = 0;
+
+		/* calculate how many sge required for this remote_buf */
+		while (rsize > 0 && tsize > 0) {
+
+			if (rsize >= dma_len) {
+				tsize -= dma_len;
+				rsize -= dma_len;
+				raddr += dma_len;
+
+				if (tsize > 0) {
+					++j;
+					if (j < count) {
+						sg = sg_next(sg);
+						dma_len = sg_dma_len(sg);
+					}
+				}
+			} else {
+				tsize -= rsize;
+				dma_len -= rsize;
+				rsize = 0;
+			}
+
+			++riu->sge_cnt;
+
+			if (rsize > 0 && riu->sge_cnt == SRPT_DEF_SG_PER_WQE) {
+				++ioctx->n_rdma;
+				riu->sge =
+				    kmalloc(riu->sge_cnt * sizeof *riu->sge,
+					    GFP_KERNEL);
+				if (!riu->sge)
+					goto free_mem;
+
+				++riu;
+				riu->sge_cnt = 0;
+				riu->raddr = raddr;
+				riu->rkey = be32_to_cpu(db->key);
+			}
+		}
+
+		++ioctx->n_rdma;
+		riu->sge = kmalloc(riu->sge_cnt * sizeof *riu->sge,
+				   GFP_KERNEL);
+		if (!riu->sge)
+			goto free_mem;
+	}
+
+	db = ioctx->rbufs;
+	tsize = cmd->data_length;
+	riu = ioctx->rdma_ius;
+	sg = sg_orig;
+	dma_len = sg_dma_len(&sg[0]);
+	dma_addr = sg_dma_address(&sg[0]);
+
+	/* this second loop is really mapped sg_addres to rdma_iu->ib_sge */
+	for (i = 0, j = 0;
+	     j < count && i < ioctx->n_rbuf && tsize > 0; ++i, ++riu, ++db) {
+		rsize = be32_to_cpu(db->len);
+		sge = riu->sge;
+		k = 0;
+
+		while (rsize > 0 && tsize > 0) {
+			sge->addr = dma_addr;
+			sge->lkey = ch->sport->sdev->mr->lkey;
+
+			if (rsize >= dma_len) {
+				sge->length =
+					(tsize < dma_len) ? tsize : dma_len;
+				tsize -= dma_len;
+				rsize -= dma_len;
+
+				if (tsize > 0) {
+					++j;
+					if (j < count) {
+						sg = sg_next(sg);
+						dma_len = sg_dma_len(sg);
+						dma_addr = sg_dma_address(sg);
+					}
+				}
+			} else {
+				sge->length = (tsize < rsize) ? tsize : rsize;
+				tsize -= rsize;
+				dma_len -= rsize;
+				dma_addr += rsize;
+				rsize = 0;
+			}
+
+			++k;
+			if (k == riu->sge_cnt && rsize > 0 && tsize > 0) {
+				++riu;
+				sge = riu->sge;
+				k = 0;
+			} else if (rsize > 0 && tsize > 0)
+				++sge;
+		}
+	}
+
+	return 0;
+
+free_mem:
+	srpt_unmap_sg_to_ib_sge(ch, ioctx);
+
+	return -ENOMEM;
+}
+
+/**
+ * srpt_get_send_ioctx() - Obtain an I/O context for sending to the initiator.
+ */
+static struct srpt_send_ioctx *srpt_get_send_ioctx(struct srpt_rdma_ch *ch)
+{
+	struct srpt_send_ioctx *ioctx;
+	unsigned long flags;
+
+	BUG_ON(!ch);
+
+	ioctx = NULL;
+	spin_lock_irqsave(&ch->spinlock, flags);
+	if (!list_empty(&ch->free_list)) {
+		ioctx = list_first_entry(&ch->free_list,
+					 struct srpt_send_ioctx, free_list);
+		list_del(&ioctx->free_list);
+	}
+	spin_unlock_irqrestore(&ch->spinlock, flags);
+
+	if (!ioctx)
+		return ioctx;
+
+	BUG_ON(ioctx->ch != ch);
+	kref_init(&ioctx->kref);
+	spin_lock_init(&ioctx->spinlock);
+	ioctx->state = SRPT_STATE_NEW;
+	ioctx->n_rbuf = 0;
+	ioctx->rbufs = NULL;
+	ioctx->n_rdma = 0;
+	ioctx->n_rdma_ius = 0;
+	ioctx->rdma_ius = NULL;
+	ioctx->mapped_sg_count = 0;
+	init_completion(&ioctx->tx_done);
+	ioctx->queue_status_only = false;
+	/*
+	 * transport_init_se_cmd() does not initialize all fields, so do it
+	 * here.
+	 */
+	memset(&ioctx->cmd, 0, sizeof(ioctx->cmd));
+	memset(&ioctx->sense_data, 0, sizeof(ioctx->sense_data));
+
+	return ioctx;
+}
+
+/**
+ * srpt_put_send_ioctx() - Free up resources.
+ */
+static void srpt_put_send_ioctx(struct srpt_send_ioctx *ioctx)
+{
+	struct srpt_rdma_ch *ch;
+	unsigned long flags;
+
+	BUG_ON(!ioctx);
+	ch = ioctx->ch;
+	BUG_ON(!ch);
+
+	WARN_ON(srpt_get_cmd_state(ioctx) != SRPT_STATE_DONE);
+
+	srpt_unmap_sg_to_ib_sge(ioctx->ch, ioctx);
+	transport_generic_free_cmd(&ioctx->cmd, 0);
+
+	if (ioctx->n_rbuf > 1) {
+		kfree(ioctx->rbufs);
+		ioctx->rbufs = NULL;
+		ioctx->n_rbuf = 0;
+	}
+
+	spin_lock_irqsave(&ch->spinlock, flags);
+	list_add(&ioctx->free_list, &ch->free_list);
+	spin_unlock_irqrestore(&ch->spinlock, flags);
+}
+
+static void srpt_put_send_ioctx_kref(struct kref *kref)
+{
+	srpt_put_send_ioctx(container_of(kref, struct srpt_send_ioctx, kref));
+}
+
+/**
+ * srpt_abort_cmd() - Abort a SCSI command.
+ * @ioctx:   I/O context associated with the SCSI command.
+ * @context: Preferred execution context.
+ */
+static int srpt_abort_cmd(struct srpt_send_ioctx *ioctx)
+{
+	enum srpt_command_state state;
+	unsigned long flags;
+
+	BUG_ON(!ioctx);
+
+	/*
+	 * If the command is in a state where the target core is waiting for
+	 * the ib_srpt driver, change the state to the next state. Changing
+	 * the state of the command from SRPT_STATE_NEED_DATA to
+	 * SRPT_STATE_DATA_IN ensures that srpt_xmit_response() will call this
+	 * function a second time.
+	 */
+
+	spin_lock_irqsave(&ioctx->spinlock, flags);
+	state = ioctx->state;
+	switch (state) {
+	case SRPT_STATE_NEED_DATA:
+		ioctx->state = SRPT_STATE_DATA_IN;
+		break;
+	case SRPT_STATE_DATA_IN:
+	case SRPT_STATE_CMD_RSP_SENT:
+	case SRPT_STATE_MGMT_RSP_SENT:
+		ioctx->state = SRPT_STATE_DONE;
+		break;
+	default:
+		break;
+	}
+	spin_unlock_irqrestore(&ioctx->spinlock, flags);
+
+	if (state == SRPT_STATE_DONE)
+		goto out;
+
+	pr_debug("Aborting cmd with state %d and tag %lld\n", state,
+		 ioctx->tag);
+
+	switch (state) {
+	case SRPT_STATE_NEW:
+	case SRPT_STATE_DATA_IN:
+	case SRPT_STATE_MGMT:
+		/*
+		 * Do nothing - defer abort processing until
+		 * srpt_queue_response() is invoked.
+		 */
+		WARN_ON(!transport_check_aborted_status(&ioctx->cmd, false));
+		break;
+	case SRPT_STATE_NEED_DATA:
+		/* DMA_TO_DEVICE (write) - RDMA read error. */
+		atomic_set(&ioctx->cmd.transport_lun_stop, 1);
+		transport_generic_handle_data(&ioctx->cmd);
+		break;
+	case SRPT_STATE_CMD_RSP_SENT:
+		/*
+		 * SRP_RSP sending failed or the SRP_RSP send completion has
+		 * not been received in time.
+		 */
+		srpt_unmap_sg_to_ib_sge(ioctx->ch, ioctx);
+		atomic_set(&ioctx->cmd.transport_lun_stop, 1);
+		kref_put(&ioctx->kref, srpt_put_send_ioctx_kref);
+		break;
+	case SRPT_STATE_MGMT_RSP_SENT:
+		srpt_set_cmd_state(ioctx, SRPT_STATE_DONE);
+		kref_put(&ioctx->kref, srpt_put_send_ioctx_kref);
+		break;
+	default:
+		WARN_ON("ERROR: unexpected command state");
+		break;
+	}
+
+out:
+	return state;
+}
+
+/**
+ * srpt_handle_send_err_comp() - Process an IB_WC_SEND error completion.
+ */
+static void srpt_handle_send_err_comp(struct srpt_rdma_ch *ch, u64 wr_id)
+{
+	struct srpt_send_ioctx *ioctx;
+	enum srpt_command_state state;
+	struct se_cmd *cmd;
+	u32 index;
+
+	atomic_inc(&ch->sq_wr_avail);
+
+	index = idx_from_wr_id(wr_id);
+	ioctx = ch->ioctx_ring[index];
+	state = srpt_get_cmd_state(ioctx);
+	cmd = &ioctx->cmd;
+
+	WARN_ON(state != SRPT_STATE_CMD_RSP_SENT
+		&& state != SRPT_STATE_MGMT_RSP_SENT
+		&& state != SRPT_STATE_NEED_DATA
+		&& state != SRPT_STATE_DONE);
+
+	/* If SRP_RSP sending failed, undo the ch->req_lim change. */
+	if (state == SRPT_STATE_CMD_RSP_SENT
+	    || state == SRPT_STATE_MGMT_RSP_SENT)
+		atomic_dec(&ch->req_lim);
+
+	srpt_abort_cmd(ioctx);
+}
+
+/**
+ * srpt_handle_send_comp() - Process an IB send completion notification.
+ */
+static void srpt_handle_send_comp(struct srpt_rdma_ch *ch,
+				  struct srpt_send_ioctx *ioctx)
+{
+	enum srpt_command_state state;
+
+	atomic_inc(&ch->sq_wr_avail);
+
+	state = srpt_set_cmd_state(ioctx, SRPT_STATE_DONE);
+
+	if (WARN_ON(state != SRPT_STATE_CMD_RSP_SENT
+		    && state != SRPT_STATE_MGMT_RSP_SENT
+		    && state != SRPT_STATE_DONE))
+		pr_debug("state = %d\n", state);
+
+	if (state != SRPT_STATE_DONE)
+		kref_put(&ioctx->kref, srpt_put_send_ioctx_kref);
+	else
+		printk(KERN_ERR "IB completion has been received too late for"
+		       " wr_id = %u.\n", ioctx->ioctx.index);
+}
+
+/**
+ * srpt_handle_rdma_comp() - Process an IB RDMA completion notification.
+ *
+ * Note: transport_generic_handle_data() is asynchronous so unmapping the
+ * data that has been transferred via IB RDMA must be postponed until the
+ * check_stop_free() callback.
+ */
+static void srpt_handle_rdma_comp(struct srpt_rdma_ch *ch,
+				  struct srpt_send_ioctx *ioctx,
+				  enum srpt_opcode opcode)
+{
+	WARN_ON(ioctx->n_rdma <= 0);
+	atomic_add(ioctx->n_rdma, &ch->sq_wr_avail);
+
+	if (opcode == SRPT_RDMA_READ_LAST) {
+		if (srpt_test_and_set_cmd_state(ioctx, SRPT_STATE_NEED_DATA,
+						SRPT_STATE_DATA_IN))
+			transport_generic_handle_data(&ioctx->cmd);
+		else
+			printk(KERN_ERR "%s[%d]: wrong state = %d\n", __func__,
+			       __LINE__, srpt_get_cmd_state(ioctx));
+	} else if (opcode == SRPT_RDMA_ABORT) {
+		ioctx->rdma_aborted = true;
+	} else {
+		WARN(true, "unexpected opcode %d\n", opcode);
+	}
+}
+
+/**
+ * srpt_handle_rdma_err_comp() - Process an IB RDMA error completion.
+ */
+static void srpt_handle_rdma_err_comp(struct srpt_rdma_ch *ch,
+				      struct srpt_send_ioctx *ioctx,
+				      enum srpt_opcode opcode)
+{
+	struct se_cmd *cmd;
+	enum srpt_command_state state;
+
+	cmd = &ioctx->cmd;
+	state = srpt_get_cmd_state(ioctx);
+	switch (opcode) {
+	case SRPT_RDMA_READ_LAST:
+		if (ioctx->n_rdma <= 0) {
+			printk(KERN_ERR "Received invalid RDMA read"
+			       " error completion with idx %d\n",
+			       ioctx->ioctx.index);
+			break;
+		}
+		atomic_add(ioctx->n_rdma, &ch->sq_wr_avail);
+		if (state == SRPT_STATE_NEED_DATA)
+			srpt_abort_cmd(ioctx);
+		else
+			printk(KERN_ERR "%s[%d]: wrong state = %d\n",
+			       __func__, __LINE__, state);
+		break;
+	case SRPT_RDMA_WRITE_LAST:
+		atomic_set(&ioctx->cmd.transport_lun_stop, 1);
+		break;
+	default:
+		printk(KERN_ERR "%s[%d]: opcode = %u\n", __func__,
+		       __LINE__, opcode);
+		break;
+	}
+}
+
+/**
+ * srpt_build_cmd_rsp() - Build an SRP_RSP response.
+ * @ch: RDMA channel through which the request has been received.
+ * @ioctx: I/O context associated with the SRP_CMD request. The response will
+ *   be built in the buffer ioctx->buf points at and hence this function will
+ *   overwrite the request data.
+ * @tag: tag of the request for which this response is being generated.
+ * @status: value for the STATUS field of the SRP_RSP information unit.
+ *
+ * Returns the size in bytes of the SRP_RSP response.
+ *
+ * An SRP_RSP response contains a SCSI status or service response. See also
+ * section 6.9 in the SRP r16a document for the format of an SRP_RSP
+ * response. See also SPC-2 for more information about sense data.
+ */
+static int srpt_build_cmd_rsp(struct srpt_rdma_ch *ch,
+			      struct srpt_send_ioctx *ioctx, u64 tag,
+			      int status)
+{
+	struct srp_rsp *srp_rsp;
+	const u8 *sense_data;
+	int sense_data_len, max_sense_len;
+
+	/*
+	 * The lowest bit of all SAM-3 status codes is zero (see also
+	 * paragraph 5.3 in SAM-3).
+	 */
+	WARN_ON(status & 1);
+
+	srp_rsp = ioctx->ioctx.buf;
+	BUG_ON(!srp_rsp);
+
+	sense_data = ioctx->sense_data;
+	sense_data_len = ioctx->cmd.scsi_sense_length;
+	WARN_ON(sense_data_len > sizeof(ioctx->sense_data));
+
+	memset(srp_rsp, 0, sizeof *srp_rsp);
+	srp_rsp->opcode = SRP_RSP;
+	srp_rsp->req_lim_delta =
+		__constant_cpu_to_be32(1 + atomic_xchg(&ch->req_lim_delta, 0));
+	srp_rsp->tag = tag;
+	srp_rsp->status = status;
+
+	if (sense_data_len) {
+		BUILD_BUG_ON(MIN_MAX_RSP_SIZE <= sizeof(*srp_rsp));
+		max_sense_len = ch->max_ti_iu_len - sizeof(*srp_rsp);
+		if (sense_data_len > max_sense_len) {
+			printk(KERN_WARNING "truncated sense data from %d to %d"
+			       " bytes\n", sense_data_len, max_sense_len);
+			sense_data_len = max_sense_len;
+		}
+
+		srp_rsp->flags |= SRP_RSP_FLAG_SNSVALID;
+		srp_rsp->sense_data_len = cpu_to_be32(sense_data_len);
+		memcpy(srp_rsp + 1, sense_data, sense_data_len);
+	}
+
+	return sizeof(*srp_rsp) + sense_data_len;
+}
+
+/**
+ * srpt_build_tskmgmt_rsp() - Build a task management response.
+ * @ch:       RDMA channel through which the request has been received.
+ * @ioctx:    I/O context in which the SRP_RSP response will be built.
+ * @rsp_code: RSP_CODE that will be stored in the response.
+ * @tag:      Tag of the request for which this response is being generated.
+ *
+ * Returns the size in bytes of the SRP_RSP response.
+ *
+ * An SRP_RSP response contains a SCSI status or service response. See also
+ * section 6.9 in the SRP r16a document for the format of an SRP_RSP
+ * response.
+ */
+static int srpt_build_tskmgmt_rsp(struct srpt_rdma_ch *ch,
+				  struct srpt_send_ioctx *ioctx,
+				  u8 rsp_code, u64 tag)
+{
+	struct srp_rsp *srp_rsp;
+	int resp_data_len;
+	int resp_len;
+
+	resp_data_len = (rsp_code == SRP_TSK_MGMT_SUCCESS) ? 0 : 4;
+	resp_len = sizeof(*srp_rsp) + resp_data_len;
+
+	srp_rsp = ioctx->ioctx.buf;
+	BUG_ON(!srp_rsp);
+	memset(srp_rsp, 0, sizeof *srp_rsp);
+
+	srp_rsp->opcode = SRP_RSP;
+	srp_rsp->req_lim_delta = __constant_cpu_to_be32(1
+				    + atomic_xchg(&ch->req_lim_delta, 0));
+	srp_rsp->tag = tag;
+
+	if (rsp_code != SRP_TSK_MGMT_SUCCESS) {
+		srp_rsp->flags |= SRP_RSP_FLAG_RSPVALID;
+		srp_rsp->resp_data_len = cpu_to_be32(resp_data_len);
+		srp_rsp->data[3] = rsp_code;
+	}
+
+	return resp_len;
+}
+
+#define NO_SUCH_LUN ((uint64_t)-1LL)
+
+/*
+ * SCSI LUN addressing method. See also SAM-2 and the section about
+ * eight byte LUNs.
+ */
+enum scsi_lun_addr_method {
+	SCSI_LUN_ADDR_METHOD_PERIPHERAL   = 0,
+	SCSI_LUN_ADDR_METHOD_FLAT         = 1,
+	SCSI_LUN_ADDR_METHOD_LUN          = 2,
+	SCSI_LUN_ADDR_METHOD_EXTENDED_LUN = 3,
+};
+
+/*
+ * srpt_unpack_lun() - Convert from network LUN to linear LUN.
+ *
+ * Convert an 2-byte, 4-byte, 6-byte or 8-byte LUN structure in network byte
+ * order (big endian) to a linear LUN. Supports three LUN addressing methods:
+ * peripheral, flat and logical unit. See also SAM-2, section 4.9.4 (page 40).
+ */
+static uint64_t srpt_unpack_lun(const uint8_t *lun, int len)
+{
+	uint64_t res = NO_SUCH_LUN;
+	int addressing_method;
+
+	if (unlikely(len < 2)) {
+		printk(KERN_ERR "Illegal LUN length %d, expected 2 bytes or "
+		       "more", len);
+		goto out;
+	}
+
+	switch (len) {
+	case 8:
+		if ((*((__be64 *)lun) &
+		     __constant_cpu_to_be64(0x0000FFFFFFFFFFFFLL)) != 0)
+			goto out_err;
+		break;
+	case 4:
+		if (*((__be16 *)&lun[2]) != 0)
+			goto out_err;
+		break;
+	case 6:
+		if (*((__be32 *)&lun[2]) != 0)
+			goto out_err;
+		break;
+	case 2:
+		break;
+	default:
+		goto out_err;
+	}
+
+	addressing_method = (*lun) >> 6; /* highest two bits of byte 0 */
+	switch (addressing_method) {
+	case SCSI_LUN_ADDR_METHOD_PERIPHERAL:
+	case SCSI_LUN_ADDR_METHOD_FLAT:
+	case SCSI_LUN_ADDR_METHOD_LUN:
+		res = *(lun + 1) | (((*lun) & 0x3f) << 8);
+		break;
+
+	case SCSI_LUN_ADDR_METHOD_EXTENDED_LUN:
+	default:
+		printk(KERN_ERR "Unimplemented LUN addressing method %u",
+		       addressing_method);
+		break;
+	}
+
+out:
+	return res;
+
+out_err:
+	printk(KERN_ERR "Support for multi-level LUNs has not yet been"
+	       " implemented");
+	goto out;
+}
+
+static int srpt_check_stop_free(struct se_cmd *cmd)
+{
+	struct srpt_send_ioctx *ioctx;
+
+	ioctx = container_of(cmd, struct srpt_send_ioctx, cmd);
+	return kref_put(&ioctx->kref, srpt_put_send_ioctx_kref);
+}
+
+/**
+ * srpt_handle_cmd() - Process SRP_CMD.
+ */
+static int srpt_handle_cmd(struct srpt_rdma_ch *ch,
+			   struct srpt_recv_ioctx *recv_ioctx,
+			   struct srpt_send_ioctx *send_ioctx)
+{
+	struct se_cmd *cmd;
+	struct srp_cmd *srp_cmd;
+	uint64_t unpacked_lun;
+	u64 data_len;
+	enum dma_data_direction dir;
+	int ret;
+
+	BUG_ON(!send_ioctx);
+
+	srp_cmd = recv_ioctx->ioctx.buf;
+	kref_get(&send_ioctx->kref);
+	cmd = &send_ioctx->cmd;
+	send_ioctx->tag = srp_cmd->tag;
+
+	switch (srp_cmd->task_attr) {
+	case SRP_CMD_SIMPLE_Q:
+		cmd->sam_task_attr = MSG_SIMPLE_TAG;
+		break;
+	case SRP_CMD_ORDERED_Q:
+	default:
+		cmd->sam_task_attr = MSG_ORDERED_TAG;
+		break;
+	case SRP_CMD_HEAD_OF_Q:
+		cmd->sam_task_attr = MSG_HEAD_TAG;
+		break;
+	case SRP_CMD_ACA:
+		cmd->sam_task_attr = MSG_ACA_TAG;
+		break;
+	}
+
+	ret = srpt_get_desc_tbl(send_ioctx, srp_cmd, &dir, &data_len);
+	if (ret) {
+		printk(KERN_ERR "0x%llx: parsing SRP descriptor table failed.\n",
+		       srp_cmd->tag);
+		cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
+		cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
+		goto send_sense;
+	}
+
+	cmd->data_length = data_len;
+	cmd->data_direction = dir;
+	unpacked_lun = srpt_unpack_lun((uint8_t *)&srp_cmd->lun,
+				       sizeof(srp_cmd->lun));
+	if (transport_lookup_cmd_lun(cmd, unpacked_lun) < 0)
+		goto send_sense;
+	ret = transport_generic_allocate_tasks(cmd, srp_cmd->cdb);
+	if (cmd->se_cmd_flags & SCF_SCSI_RESERVATION_CONFLICT)
+		srpt_queue_status(cmd);
+	else if (cmd->se_cmd_flags & SCF_SCSI_CDB_EXCEPTION)
+		goto send_sense;
+	else
+		WARN_ON_ONCE(ret);
+
+	transport_handle_cdb_direct(cmd);
+	return 0;
+
+send_sense:
+	transport_send_check_condition_and_sense(cmd, cmd->scsi_sense_reason,
+						 0);
+	return -1;
+}
+
+/**
+ * srpt_rx_mgmt_fn_tag() - Process a task management function by tag.
+ * @ch: RDMA channel of the task management request.
+ * @fn: Task management function to perform.
+ * @req_tag: Tag of the SRP task management request.
+ * @mgmt_ioctx: I/O context of the task management request.
+ *
+ * Returns zero if the target core will process the task management
+ * request asynchronously.
+ *
+ * Note: It is assumed that the initiator serializes tag-based task management
+ * requests.
+ */
+static int srpt_rx_mgmt_fn_tag(struct srpt_send_ioctx *ioctx, u64 tag)
+{
+	struct srpt_device *sdev;
+	struct srpt_rdma_ch *ch;
+	struct srpt_send_ioctx *target;
+	int ret, i;
+
+	ret = -EINVAL;
+	ch = ioctx->ch;
+	BUG_ON(!ch);
+	BUG_ON(!ch->sport);
+	sdev = ch->sport->sdev;
+	BUG_ON(!sdev);
+	spin_lock_irq(&sdev->spinlock);
+	for (i = 0; i < ch->rq_size; ++i) {
+		target = ch->ioctx_ring[i];
+		if (target->cmd.se_lun == ioctx->cmd.se_lun &&
+		    target->tag == tag &&
+		    srpt_get_cmd_state(target) != SRPT_STATE_DONE) {
+			ret = 0;
+			/* now let the target core abort &target->cmd; */
+			break;
+		}
+	}
+	spin_unlock_irq(&sdev->spinlock);
+	return ret;
+}
+
+static int srp_tmr_to_tcm(int fn)
+{
+	switch (fn) {
+	case SRP_TSK_ABORT_TASK:
+		return TMR_ABORT_TASK;
+	case SRP_TSK_ABORT_TASK_SET:
+		return TMR_ABORT_TASK_SET;
+	case SRP_TSK_CLEAR_TASK_SET:
+		return TMR_CLEAR_TASK_SET;
+	case SRP_TSK_LUN_RESET:
+		return TMR_LUN_RESET;
+	case SRP_TSK_CLEAR_ACA:
+		return TMR_CLEAR_ACA;
+	default:
+		return -1;
+	}
+}
+
+/**
+ * srpt_handle_tsk_mgmt() - Process an SRP_TSK_MGMT information unit.
+ *
+ * Returns 0 if and only if the request will be processed by the target core.
+ *
+ * For more information about SRP_TSK_MGMT information units, see also section
+ * 6.7 in the SRP r16a document.
+ */
+static void srpt_handle_tsk_mgmt(struct srpt_rdma_ch *ch,
+				 struct srpt_recv_ioctx *recv_ioctx,
+				 struct srpt_send_ioctx *send_ioctx)
+{
+	struct srp_tsk_mgmt *srp_tsk;
+	struct se_cmd *cmd;
+	uint64_t unpacked_lun;
+	int tcm_tmr;
+	int res;
+
+	BUG_ON(!send_ioctx);
+
+	srp_tsk = recv_ioctx->ioctx.buf;
+	cmd = &send_ioctx->cmd;
+
+	pr_debug("recv tsk_mgmt fn %d for task_tag %lld and cmd tag %lld"
+		 " cm_id %p sess %p\n", srp_tsk->tsk_mgmt_func,
+		 srp_tsk->task_tag, srp_tsk->tag, ch->cm_id, ch->sess);
+
+	srpt_set_cmd_state(send_ioctx, SRPT_STATE_MGMT);
+	send_ioctx->tag = srp_tsk->tag;
+	tcm_tmr = srp_tmr_to_tcm(srp_tsk->tsk_mgmt_func);
+	if (tcm_tmr < 0) {
+		send_ioctx->cmd.se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
+		send_ioctx->cmd.se_tmr_req->response =
+			TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED;
+		goto process_tmr;
+	}
+	cmd->se_tmr_req = core_tmr_alloc_req(cmd, NULL, tcm_tmr, GFP_KERNEL);
+	if (!cmd->se_tmr_req) {
+		send_ioctx->cmd.se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
+		send_ioctx->cmd.se_tmr_req->response = TMR_FUNCTION_REJECTED;
+		goto process_tmr;
+	}
+
+	unpacked_lun = srpt_unpack_lun((uint8_t *)&srp_tsk->lun,
+				       sizeof(srp_tsk->lun));
+	res = transport_lookup_tmr_lun(&send_ioctx->cmd, unpacked_lun);
+	if (res) {
+		pr_debug("rejecting TMR for LUN %lld\n", unpacked_lun);
+		send_ioctx->cmd.se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
+		send_ioctx->cmd.se_tmr_req->response = TMR_LUN_DOES_NOT_EXIST;
+		goto process_tmr;
+	}
+
+	if (srp_tsk->tsk_mgmt_func == SRP_TSK_ABORT_TASK)
+		srpt_rx_mgmt_fn_tag(send_ioctx, srp_tsk->task_tag);
+
+process_tmr:
+	kref_get(&send_ioctx->kref);
+	if (!(send_ioctx->cmd.se_cmd_flags & SCF_SCSI_CDB_EXCEPTION))
+		transport_generic_handle_tmr(&send_ioctx->cmd);
+	else
+		transport_send_check_condition_and_sense(cmd,
+						cmd->scsi_sense_reason, 0);
+
+}
+
+/**
+ * srpt_handle_new_iu() - Process a newly received information unit.
+ * @ch:    RDMA channel through which the information unit has been received.
+ * @ioctx: SRPT I/O context associated with the information unit.
+ */
+static void srpt_handle_new_iu(struct srpt_rdma_ch *ch,
+			       struct srpt_recv_ioctx *recv_ioctx,
+			       struct srpt_send_ioctx *send_ioctx)
+{
+	struct srp_cmd *srp_cmd;
+	enum rdma_ch_state ch_state;
+
+	BUG_ON(!ch);
+	BUG_ON(!recv_ioctx);
+
+	ib_dma_sync_single_for_cpu(ch->sport->sdev->device,
+				   recv_ioctx->ioctx.dma, srp_max_req_size,
+				   DMA_FROM_DEVICE);
+
+	ch_state = srpt_get_ch_state(ch);
+	if (unlikely(ch_state == CH_CONNECTING)) {
+		list_add_tail(&recv_ioctx->wait_list, &ch->cmd_wait_list);
+		goto out;
+	}
+
+	if (unlikely(ch_state != CH_LIVE))
+		goto out;
+
+	srp_cmd = recv_ioctx->ioctx.buf;
+	if (srp_cmd->opcode == SRP_CMD || srp_cmd->opcode == SRP_TSK_MGMT) {
+		if (!send_ioctx)
+			send_ioctx = srpt_get_send_ioctx(ch);
+		if (unlikely(!send_ioctx)) {
+			list_add_tail(&recv_ioctx->wait_list,
+				      &ch->cmd_wait_list);
+			goto out;
+		}
+	}
+
+	transport_init_se_cmd(&send_ioctx->cmd, &srpt_target->tf_ops, ch->sess,
+			      0, DMA_NONE, MSG_SIMPLE_TAG,
+			      send_ioctx->sense_data);
+
+	switch (srp_cmd->opcode) {
+	case SRP_CMD:
+		srpt_handle_cmd(ch, recv_ioctx, send_ioctx);
+		break;
+	case SRP_TSK_MGMT:
+		srpt_handle_tsk_mgmt(ch, recv_ioctx, send_ioctx);
+		break;
+	case SRP_I_LOGOUT:
+		printk(KERN_ERR "Not yet implemented: SRP_I_LOGOUT\n");
+		break;
+	case SRP_CRED_RSP:
+		pr_debug("received SRP_CRED_RSP\n");
+		break;
+	case SRP_AER_RSP:
+		pr_debug("received SRP_AER_RSP\n");
+		break;
+	case SRP_RSP:
+		printk(KERN_ERR "Received SRP_RSP\n");
+		break;
+	default:
+		printk(KERN_ERR "received IU with unknown opcode 0x%x\n",
+		       srp_cmd->opcode);
+		break;
+	}
+
+	srpt_post_recv(ch->sport->sdev, recv_ioctx);
+out:
+	return;
+}
+
+static void srpt_process_rcv_completion(struct ib_cq *cq,
+					struct srpt_rdma_ch *ch,
+					struct ib_wc *wc)
+{
+	struct srpt_device *sdev = ch->sport->sdev;
+	struct srpt_recv_ioctx *ioctx;
+	u32 index;
+
+	index = idx_from_wr_id(wc->wr_id);
+	if (wc->status == IB_WC_SUCCESS) {
+		int req_lim;
+
+		req_lim = atomic_dec_return(&ch->req_lim);
+		if (unlikely(req_lim < 0))
+			printk(KERN_ERR "req_lim = %d < 0\n", req_lim);
+		ioctx = sdev->ioctx_ring[index];
+		srpt_handle_new_iu(ch, ioctx, NULL);
+	} else {
+		printk(KERN_INFO "receiving failed for idx %u with status %d\n",
+		       index, wc->status);
+	}
+}
+
+/**
+ * srpt_process_send_completion() - Process an IB send completion.
+ *
+ * Note: Although this has not yet been observed during tests, at least in
+ * theory it is possible that the srpt_get_send_ioctx() call invoked by
+ * srpt_handle_new_iu() fails. This is possible because the req_lim_delta
+ * value in each response is set to one, and it is possible that this response
+ * makes the initiator send a new request before the send completion for that
+ * response has been processed. This could e.g. happen if the call to
+ * srpt_put_send_iotcx() is delayed because of a higher priority interrupt or
+ * if IB retransmission causes generation of the send completion to be
+ * delayed. Incoming information units for which srpt_get_send_ioctx() fails
+ * are queued on cmd_wait_list. The code below processes these delayed
+ * requests one at a time.
+ */
+static void srpt_process_send_completion(struct ib_cq *cq,
+					 struct srpt_rdma_ch *ch,
+					 struct ib_wc *wc)
+{
+	struct srpt_send_ioctx *send_ioctx;
+	uint32_t index;
+	enum srpt_opcode opcode;
+
+	index = idx_from_wr_id(wc->wr_id);
+	opcode = opcode_from_wr_id(wc->wr_id);
+	send_ioctx = ch->ioctx_ring[index];
+	if (wc->status == IB_WC_SUCCESS) {
+		if (opcode == SRPT_SEND)
+			srpt_handle_send_comp(ch, send_ioctx);
+		else {
+			WARN_ON(opcode != SRPT_RDMA_ABORT &&
+				wc->opcode != IB_WC_RDMA_READ);
+			srpt_handle_rdma_comp(ch, send_ioctx, opcode);
+		}
+	} else {
+		if (opcode == SRPT_SEND) {
+			printk(KERN_INFO "sending response for idx %u failed"
+			       " with status %d\n", index, wc->status);
+			srpt_handle_send_err_comp(ch, wc->wr_id);
+		} else if (opcode != SRPT_RDMA_MID) {
+			printk(KERN_INFO "RDMA t %d for idx %u failed with"
+				" status %d", opcode, index, wc->status);
+			srpt_handle_rdma_err_comp(ch, send_ioctx, opcode);
+		}
+	}
+
+	while (unlikely(opcode == SRPT_SEND
+			&& !list_empty(&ch->cmd_wait_list)
+			&& srpt_get_ch_state(ch) == CH_LIVE
+			&& (send_ioctx = srpt_get_send_ioctx(ch)) != NULL)) {
+		struct srpt_recv_ioctx *recv_ioctx;
+
+		recv_ioctx = list_first_entry(&ch->cmd_wait_list,
+					      struct srpt_recv_ioctx,
+					      wait_list);
+		list_del(&recv_ioctx->wait_list);
+		srpt_handle_new_iu(ch, recv_ioctx, send_ioctx);
+	}
+}
+
+static void srpt_process_completion(struct ib_cq *cq, struct srpt_rdma_ch *ch)
+{
+	struct ib_wc *const wc = ch->wc;
+	int i, n;
+
+	WARN_ON(cq != ch->cq);
+
+	ib_req_notify_cq(cq, IB_CQ_NEXT_COMP);
+	while ((n = ib_poll_cq(cq, ARRAY_SIZE(ch->wc), wc)) > 0) {
+		for (i = 0; i < n; i++) {
+			if (opcode_from_wr_id(wc[i].wr_id) == SRPT_RECV)
+				srpt_process_rcv_completion(cq, ch, &wc[i]);
+			else
+				srpt_process_send_completion(cq, ch, &wc[i]);
+		}
+	}
+}
+
+/**
+ * srpt_completion() - IB completion queue callback function.
+ *
+ * Notes:
+ * - It is guaranteed that a completion handler will never be invoked
+ *   concurrently on two different CPUs for the same completion queue. See also
+ *   Documentation/infiniband/core_locking.txt and the implementation of
+ *   handle_edge_irq() in kernel/irq/chip.c.
+ * - When threaded IRQs are enabled, completion handlers are invoked in thread
+ *   context instead of interrupt context.
+ */
+static void srpt_completion(struct ib_cq *cq, void *ctx)
+{
+	struct srpt_rdma_ch *ch = ctx;
+
+	wake_up_interruptible(&ch->wait_queue);
+}
+
+static int srpt_compl_thread(void *arg)
+{
+	struct srpt_rdma_ch *ch;
+
+	/* Hibernation / freezing of the SRPT kernel thread is not supported. */
+	current->flags |= PF_NOFREEZE;
+
+	ch = arg;
+	BUG_ON(!ch);
+	printk(KERN_INFO "Session %s: kernel thread %s (PID %d) started\n",
+	       ch->sess_name, ch->thread->comm, current->pid);
+	while (!kthread_should_stop()) {
+		wait_event_interruptible(ch->wait_queue,
+			(srpt_process_completion(ch->cq, ch),
+			 kthread_should_stop()));
+	}
+	printk(KERN_INFO "Session %s: kernel thread %s (PID %d) stopped\n",
+	       ch->sess_name, ch->thread->comm, current->pid);
+	return 0;
+}
+
+/**
+ * srpt_create_ch_ib() - Create receive and send completion queues.
+ */
+static int srpt_create_ch_ib(struct srpt_rdma_ch *ch)
+{
+	struct ib_qp_init_attr *qp_init;
+	struct srpt_port *sport = ch->sport;
+	struct srpt_device *sdev = sport->sdev;
+	u32 srp_sq_size = sport->port_attrib.srp_sq_size;
+	int ret;
+
+	WARN_ON(ch->rq_size < 1);
+
+	ret = -ENOMEM;
+	qp_init = kzalloc(sizeof *qp_init, GFP_KERNEL);
+	if (!qp_init)
+		goto out;
+
+	ch->cq = ib_create_cq(sdev->device, srpt_completion, NULL, ch,
+			      ch->rq_size + srp_sq_size, 0);
+	if (IS_ERR(ch->cq)) {
+		ret = PTR_ERR(ch->cq);
+		printk(KERN_ERR "failed to create CQ cqe= %d ret= %d\n",
+		       ch->rq_size + srp_sq_size, ret);
+		goto out;
+	}
+
+	qp_init->qp_context = (void *)ch;
+	qp_init->event_handler
+		= (void(*)(struct ib_event *, void*))srpt_qp_event;
+	qp_init->send_cq = ch->cq;
+	qp_init->recv_cq = ch->cq;
+	qp_init->srq = sdev->srq;
+	qp_init->sq_sig_type = IB_SIGNAL_REQ_WR;
+	qp_init->qp_type = IB_QPT_RC;
+	qp_init->cap.max_send_wr = srp_sq_size;
+	qp_init->cap.max_send_sge = SRPT_DEF_SG_PER_WQE;
+
+	ch->qp = ib_create_qp(sdev->pd, qp_init);
+	if (IS_ERR(ch->qp)) {
+		ret = PTR_ERR(ch->qp);
+		printk(KERN_ERR "failed to create_qp ret= %d\n", ret);
+		goto err_destroy_cq;
+	}
+
+	atomic_set(&ch->sq_wr_avail, qp_init->cap.max_send_wr);
+
+	pr_debug("%s: max_cqe= %d max_sge= %d sq_size = %d cm_id= %p\n",
+		 __func__, ch->cq->cqe, qp_init->cap.max_send_sge,
+		 qp_init->cap.max_send_wr, ch->cm_id);
+
+	ret = srpt_init_ch_qp(ch, ch->qp);
+	if (ret)
+		goto err_destroy_qp;
+
+	init_waitqueue_head(&ch->wait_queue);
+
+	pr_debug("creating thread for session %s\n", ch->sess_name);
+
+	ch->thread = kthread_run(srpt_compl_thread, ch, "ib_srpt_compl");
+	if (IS_ERR(ch->thread)) {
+		printk(KERN_ERR "failed to create kernel thread %ld\n",
+		       PTR_ERR(ch->thread));
+		ch->thread = NULL;
+		goto err_destroy_qp;
+	}
+
+out:
+	kfree(qp_init);
+	return ret;
+
+err_destroy_qp:
+	ib_destroy_qp(ch->qp);
+err_destroy_cq:
+	ib_destroy_cq(ch->cq);
+	goto out;
+}
+
+static void srpt_destroy_ch_ib(struct srpt_rdma_ch *ch)
+{
+	if (ch->thread)
+		kthread_stop(ch->thread);
+
+	ib_destroy_qp(ch->qp);
+	ib_destroy_cq(ch->cq);
+}
+
+/**
+ * __srpt_close_ch() - Close an RDMA channel by setting the QP error state.
+ *
+ * Reset the QP and make sure all resources associated with the channel will
+ * be deallocated at an appropriate time.
+ *
+ * Note: The caller must hold ch->sport->sdev->spinlock.
+ */
+static void __srpt_close_ch(struct srpt_rdma_ch *ch)
+{
+	struct srpt_device *sdev;
+	enum rdma_ch_state prev_state;
+	unsigned long flags;
+
+	sdev = ch->sport->sdev;
+
+	spin_lock_irqsave(&ch->spinlock, flags);
+	prev_state = ch->state;
+	switch (prev_state) {
+	case CH_CONNECTING:
+	case CH_LIVE:
+		ch->state = CH_DISCONNECTING;
+		break;
+	default:
+		break;
+	}
+	spin_unlock_irqrestore(&ch->spinlock, flags);
+
+	switch (prev_state) {
+	case CH_CONNECTING:
+		ib_send_cm_rej(ch->cm_id, IB_CM_REJ_NO_RESOURCES, NULL, 0,
+			       NULL, 0);
+		/* fall through */
+	case CH_LIVE:
+		if (ib_send_cm_dreq(ch->cm_id, NULL, 0) < 0)
+			printk(KERN_ERR "sending CM DREQ failed.\n");
+		break;
+	case CH_DISCONNECTING:
+		break;
+	case CH_DRAINING:
+	case CH_RELEASING:
+		break;
+	}
+}
+
+/**
+ * srpt_close_ch() - Close an RDMA channel.
+ */
+static void srpt_close_ch(struct srpt_rdma_ch *ch)
+{
+	struct srpt_device *sdev;
+
+	sdev = ch->sport->sdev;
+	spin_lock_irq(&sdev->spinlock);
+	__srpt_close_ch(ch);
+	spin_unlock_irq(&sdev->spinlock);
+}
+
+/**
+ * srpt_drain_channel() - Drain a channel by resetting the IB queue pair.
+ * @cm_id: Pointer to the CM ID of the channel to be drained.
+ *
+ * Note: Must be called from inside srpt_cm_handler to avoid a race between
+ * accessing sdev->spinlock and the call to kfree(sdev) in srpt_remove_one()
+ * (the caller of srpt_cm_handler holds the cm_id spinlock; srpt_remove_one()
+ * waits until all target sessions for the associated IB device have been
+ * unregistered and target session registration involves a call to
+ * ib_destroy_cm_id(), which locks the cm_id spinlock and hence waits until
+ * this function has finished).
+ */
+static void srpt_drain_channel(struct ib_cm_id *cm_id)
+{
+	struct srpt_device *sdev;
+	struct srpt_rdma_ch *ch;
+	int ret;
+	bool do_reset = false;
+
+	WARN_ON_ONCE(irqs_disabled());
+
+	sdev = cm_id->context;
+	BUG_ON(!sdev);
+	spin_lock_irq(&sdev->spinlock);
+	list_for_each_entry(ch, &sdev->rch_list, list) {
+		if (ch->cm_id == cm_id) {
+			do_reset = srpt_test_and_set_ch_state(ch,
+					CH_CONNECTING, CH_DRAINING) ||
+				   srpt_test_and_set_ch_state(ch,
+					CH_LIVE, CH_DRAINING) ||
+				   srpt_test_and_set_ch_state(ch,
+					CH_DISCONNECTING, CH_DRAINING);
+			break;
+		}
+	}
+	spin_unlock_irq(&sdev->spinlock);
+
+	if (do_reset) {
+		ret = srpt_ch_qp_err(ch);
+		if (ret < 0)
+			printk(KERN_ERR "Setting queue pair in error state"
+			       " failed: %d\n", ret);
+	}
+}
+
+/**
+ * srpt_find_channel() - Look up an RDMA channel.
+ * @cm_id: Pointer to the CM ID of the channel to be looked up.
+ *
+ * Return NULL if no matching RDMA channel has been found.
+ */
+static struct srpt_rdma_ch *srpt_find_channel(struct srpt_device *sdev,
+					      struct ib_cm_id *cm_id)
+{
+	struct srpt_rdma_ch *ch;
+	bool found;
+
+	WARN_ON_ONCE(irqs_disabled());
+	BUG_ON(!sdev);
+
+	found = false;
+	spin_lock_irq(&sdev->spinlock);
+	list_for_each_entry(ch, &sdev->rch_list, list) {
+		if (ch->cm_id == cm_id) {
+			found = true;
+			break;
+		}
+	}
+	spin_unlock_irq(&sdev->spinlock);
+
+	return found ? ch : NULL;
+}
+
+/**
+ * srpt_release_channel() - Release channel resources.
+ *
+ * Schedules the actual release because:
+ * - Calling the ib_destroy_cm_id() call from inside an IB CM callback would
+ *   trigger a deadlock.
+ * - It is not safe to call TCM transport_* functions from interrupt context.
+ */
+static void srpt_release_channel(struct srpt_rdma_ch *ch)
+{
+	schedule_work(&ch->release_work);
+}
+
+static void srpt_release_channel_work(struct work_struct *w)
+{
+	struct srpt_rdma_ch *ch;
+	struct srpt_device *sdev;
+
+	ch = container_of(w, struct srpt_rdma_ch, release_work);
+	pr_debug("ch = %p; ch->sess = %p; release_done = %p\n", ch, ch->sess,
+		 ch->release_done);
+
+	sdev = ch->sport->sdev;
+	BUG_ON(!sdev);
+
+	transport_deregister_session_configfs(ch->sess);
+	transport_deregister_session(ch->sess);
+	ch->sess = NULL;
+
+	srpt_destroy_ch_ib(ch);
+
+	srpt_free_ioctx_ring((struct srpt_ioctx **)ch->ioctx_ring,
+			     ch->sport->sdev, ch->rq_size,
+			     ch->rsp_size, DMA_TO_DEVICE);
+
+	spin_lock_irq(&sdev->spinlock);
+	list_del(&ch->list);
+	spin_unlock_irq(&sdev->spinlock);
+
+	ib_destroy_cm_id(ch->cm_id);
+
+	if (ch->release_done)
+		complete(ch->release_done);
+
+	wake_up(&sdev->ch_releaseQ);
+
+	kfree(ch);
+}
+
+static struct srpt_node_acl *__srpt_lookup_acl(struct srpt_port *sport,
+					       u8 i_port_id[16])
+{
+	struct srpt_node_acl *nacl;
+
+	list_for_each_entry(nacl, &sport->port_acl_list, list)
+		if (memcmp(nacl->i_port_id, i_port_id,
+			   sizeof(nacl->i_port_id)) == 0)
+			return nacl;
+
+	return NULL;
+}
+
+static struct srpt_node_acl *srpt_lookup_acl(struct srpt_port *sport,
+					     u8 i_port_id[16])
+{
+	struct srpt_node_acl *nacl;
+
+	spin_lock_irq(&sport->port_acl_lock);
+	nacl = __srpt_lookup_acl(sport, i_port_id);
+	spin_unlock_irq(&sport->port_acl_lock);
+
+	return nacl;
+}
+
+/**
+ * srpt_cm_req_recv() - Process the event IB_CM_REQ_RECEIVED.
+ *
+ * Ownership of the cm_id is transferred to the target session if this
+ * functions returns zero. Otherwise the caller remains the owner of cm_id.
+ */
+static int srpt_cm_req_recv(struct ib_cm_id *cm_id,
+			    struct ib_cm_req_event_param *param,
+			    void *private_data)
+{
+	struct srpt_device *sdev = cm_id->context;
+	struct srpt_port *sport = &sdev->port[param->port - 1];
+	struct srp_login_req *req;
+	struct srp_login_rsp *rsp;
+	struct srp_login_rej *rej;
+	struct ib_cm_rep_param *rep_param;
+	struct srpt_rdma_ch *ch, *tmp_ch;
+	struct srpt_node_acl *nacl;
+	u32 it_iu_len;
+	int i;
+	int ret = 0;
+
+	WARN_ON_ONCE(irqs_disabled());
+
+	if (WARN_ON(!sdev || !private_data))
+		return -EINVAL;
+
+	req = (struct srp_login_req *)private_data;
+
+	it_iu_len = be32_to_cpu(req->req_it_iu_len);
+
+	printk(KERN_INFO "Received SRP_LOGIN_REQ with i_port_id 0x%llx:0x%llx,"
+	       " t_port_id 0x%llx:0x%llx and it_iu_len %d on port %d"
+	       " (guid=0x%llx:0x%llx)\n",
+	       be64_to_cpu(*(__be64 *)&req->initiator_port_id[0]),
+	       be64_to_cpu(*(__be64 *)&req->initiator_port_id[8]),
+	       be64_to_cpu(*(__be64 *)&req->target_port_id[0]),
+	       be64_to_cpu(*(__be64 *)&req->target_port_id[8]),
+	       it_iu_len,
+	       param->port,
+	       be64_to_cpu(*(__be64 *)&sdev->port[param->port - 1].gid.raw[0]),
+	       be64_to_cpu(*(__be64 *)&sdev->port[param->port - 1].gid.raw[8]));
+
+	rsp = kzalloc(sizeof *rsp, GFP_KERNEL);
+	rej = kzalloc(sizeof *rej, GFP_KERNEL);
+	rep_param = kzalloc(sizeof *rep_param, GFP_KERNEL);
+
+	if (!rsp || !rej || !rep_param) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	if (it_iu_len > srp_max_req_size || it_iu_len < 64) {
+		rej->reason = __constant_cpu_to_be32(
+				SRP_LOGIN_REJ_REQ_IT_IU_LENGTH_TOO_LARGE);
+		ret = -EINVAL;
+		printk(KERN_ERR "rejected SRP_LOGIN_REQ because its"
+		       " length (%d bytes) is out of range (%d .. %d)\n",
+		       it_iu_len, 64, srp_max_req_size);
+		goto reject;
+	}
+
+	if (!sport->enabled) {
+		rej->reason = __constant_cpu_to_be32(
+			     SRP_LOGIN_REJ_INSUFFICIENT_RESOURCES);
+		ret = -EINVAL;
+		printk(KERN_ERR "rejected SRP_LOGIN_REQ because the target port"
+		       " has not yet been enabled\n");
+		goto reject;
+	}
+
+	if ((req->req_flags & SRP_MTCH_ACTION) == SRP_MULTICHAN_SINGLE) {
+		rsp->rsp_flags = SRP_LOGIN_RSP_MULTICHAN_NO_CHAN;
+
+		spin_lock_irq(&sdev->spinlock);
+
+		list_for_each_entry_safe(ch, tmp_ch, &sdev->rch_list, list) {
+			if (!memcmp(ch->i_port_id, req->initiator_port_id, 16)
+			    && !memcmp(ch->t_port_id, req->target_port_id, 16)
+			    && param->port == ch->sport->port
+			    && param->listen_id == ch->sport->sdev->cm_id
+			    && ch->cm_id) {
+				enum rdma_ch_state ch_state;
+
+				ch_state = srpt_get_ch_state(ch);
+				if (ch_state != CH_CONNECTING
+				    && ch_state != CH_LIVE)
+					continue;
+
+				/* found an existing channel */
+				pr_debug("Found existing channel %s"
+					 " cm_id= %p state= %d\n",
+					 ch->sess_name, ch->cm_id, ch_state);
+
+				__srpt_close_ch(ch);
+
+				rsp->rsp_flags =
+					SRP_LOGIN_RSP_MULTICHAN_TERMINATED;
+			}
+		}
+
+		spin_unlock_irq(&sdev->spinlock);
+
+	} else
+		rsp->rsp_flags = SRP_LOGIN_RSP_MULTICHAN_MAINTAINED;
+
+	if (*(__be64 *)req->target_port_id != cpu_to_be64(srpt_service_guid)
+	    || *(__be64 *)(req->target_port_id + 8) !=
+	       cpu_to_be64(srpt_service_guid)) {
+		rej->reason = __constant_cpu_to_be32(
+				SRP_LOGIN_REJ_UNABLE_ASSOCIATE_CHANNEL);
+		ret = -ENOMEM;
+		printk(KERN_ERR "rejected SRP_LOGIN_REQ because it"
+		       " has an invalid target port identifier.\n");
+		goto reject;
+	}
+
+	ch = kzalloc(sizeof *ch, GFP_KERNEL);
+	if (!ch) {
+		rej->reason = __constant_cpu_to_be32(
+					SRP_LOGIN_REJ_INSUFFICIENT_RESOURCES);
+		printk(KERN_ERR "rejected SRP_LOGIN_REQ because no memory.\n");
+		ret = -ENOMEM;
+		goto reject;
+	}
+
+	INIT_WORK(&ch->release_work, srpt_release_channel_work);
+	memcpy(ch->i_port_id, req->initiator_port_id, 16);
+	memcpy(ch->t_port_id, req->target_port_id, 16);
+	ch->sport = &sdev->port[param->port - 1];
+	ch->cm_id = cm_id;
+	/*
+	 * Avoid QUEUE_FULL conditions by limiting the number of buffers used
+	 * for the SRP protocol to the command queue size.
+	 */
+	ch->rq_size = SRPT_RQ_SIZE;
+	spin_lock_init(&ch->spinlock);
+	ch->state = CH_CONNECTING;
+	INIT_LIST_HEAD(&ch->cmd_wait_list);
+	ch->rsp_size = ch->sport->port_attrib.srp_max_rsp_size;
+
+	ch->ioctx_ring = (struct srpt_send_ioctx **)
+		srpt_alloc_ioctx_ring(ch->sport->sdev, ch->rq_size,
+				      sizeof(*ch->ioctx_ring[0]),
+				      ch->rsp_size, DMA_TO_DEVICE);
+	if (!ch->ioctx_ring)
+		goto free_ch;
+
+	INIT_LIST_HEAD(&ch->free_list);
+	for (i = 0; i < ch->rq_size; i++) {
+		ch->ioctx_ring[i]->ch = ch;
+		list_add_tail(&ch->ioctx_ring[i]->free_list, &ch->free_list);
+	}
+
+	ret = srpt_create_ch_ib(ch);
+	if (ret) {
+		rej->reason = __constant_cpu_to_be32(
+				SRP_LOGIN_REJ_INSUFFICIENT_RESOURCES);
+		printk(KERN_ERR "rejected SRP_LOGIN_REQ because creating"
+		       " a new RDMA channel failed.\n");
+		goto free_ring;
+	}
+
+	ret = srpt_ch_qp_rtr(ch, ch->qp);
+	if (ret) {
+		rej->reason = __constant_cpu_to_be32(
+				SRP_LOGIN_REJ_INSUFFICIENT_RESOURCES);
+		printk(KERN_ERR "rejected SRP_LOGIN_REQ because enabling"
+		       " RTR failed (error code = %d)\n", ret);
+		goto destroy_ib;
+	}
+	/*
+	 * Use the initator port identifier as the session name.
+	 */
+	snprintf(ch->sess_name, sizeof(ch->sess_name), "0x%016llx%016llx",
+			be64_to_cpu(*(__be64 *)ch->i_port_id),
+			be64_to_cpu(*(__be64 *)(ch->i_port_id + 8)));
+
+	pr_debug("registering session %s\n", ch->sess_name);
+
+	nacl = srpt_lookup_acl(sport, ch->i_port_id);
+	if (!nacl) {
+		printk(KERN_INFO "Rejected login because no ACL has been"
+		       " configured yet for initiator %s.\n", ch->sess_name);
+		rej->reason = __constant_cpu_to_be32(
+				SRP_LOGIN_REJ_CHANNEL_LIMIT_REACHED);
+		goto destroy_ib;
+	}
+
+	ch->sess = transport_init_session();
+	if (!ch->sess) {
+		rej->reason = __constant_cpu_to_be32(
+				SRP_LOGIN_REJ_INSUFFICIENT_RESOURCES);
+		pr_debug("Failed to create session\n");
+		goto deregister_session;
+	}
+	ch->sess->se_node_acl = &nacl->nacl;
+	transport_register_session(&sport->port_tpg_1, &nacl->nacl, ch->sess, ch);
+
+	pr_debug("Establish connection sess=%p name=%s cm_id=%p\n", ch->sess,
+		 ch->sess_name, ch->cm_id);
+
+	/* create srp_login_response */
+	rsp->opcode = SRP_LOGIN_RSP;
+	rsp->tag = req->tag;
+	rsp->max_it_iu_len = req->req_it_iu_len;
+	rsp->max_ti_iu_len = req->req_it_iu_len;
+	ch->max_ti_iu_len = it_iu_len;
+	rsp->buf_fmt = __constant_cpu_to_be16(SRP_BUF_FORMAT_DIRECT
+					      | SRP_BUF_FORMAT_INDIRECT);
+	rsp->req_lim_delta = cpu_to_be32(ch->rq_size);
+	atomic_set(&ch->req_lim, ch->rq_size);
+	atomic_set(&ch->req_lim_delta, 0);
+
+	/* create cm reply */
+	rep_param->qp_num = ch->qp->qp_num;
+	rep_param->private_data = (void *)rsp;
+	rep_param->private_data_len = sizeof *rsp;
+	rep_param->rnr_retry_count = 7;
+	rep_param->flow_control = 1;
+	rep_param->failover_accepted = 0;
+	rep_param->srq = 1;
+	rep_param->responder_resources = 4;
+	rep_param->initiator_depth = 4;
+
+	ret = ib_send_cm_rep(cm_id, rep_param);
+	if (ret) {
+		printk(KERN_ERR "sending SRP_LOGIN_REQ response failed"
+		       " (error code = %d)\n", ret);
+		goto release_channel;
+	}
+
+	spin_lock_irq(&sdev->spinlock);
+	list_add_tail(&ch->list, &sdev->rch_list);
+	spin_unlock_irq(&sdev->spinlock);
+
+	goto out;
+
+release_channel:
+	srpt_set_ch_state(ch, CH_RELEASING);
+	transport_deregister_session_configfs(ch->sess);
+
+deregister_session:
+	transport_deregister_session(ch->sess);
+	ch->sess = NULL;
+
+destroy_ib:
+	srpt_destroy_ch_ib(ch);
+
+free_ring:
+	srpt_free_ioctx_ring((struct srpt_ioctx **)ch->ioctx_ring,
+			     ch->sport->sdev, ch->rq_size,
+			     ch->rsp_size, DMA_TO_DEVICE);
+free_ch:
+	kfree(ch);
+
+reject:
+	rej->opcode = SRP_LOGIN_REJ;
+	rej->tag = req->tag;
+	rej->buf_fmt = __constant_cpu_to_be16(SRP_BUF_FORMAT_DIRECT
+					      | SRP_BUF_FORMAT_INDIRECT);
+
+	ib_send_cm_rej(cm_id, IB_CM_REJ_CONSUMER_DEFINED, NULL, 0,
+			     (void *)rej, sizeof *rej);
+
+out:
+	kfree(rep_param);
+	kfree(rsp);
+	kfree(rej);
+
+	return ret;
+}
+
+static void srpt_cm_rej_recv(struct ib_cm_id *cm_id)
+{
+	printk(KERN_INFO "Received IB REJ for cm_id %p.\n", cm_id);
+	srpt_drain_channel(cm_id);
+}
+
+/**
+ * srpt_cm_rtu_recv() - Process an IB_CM_RTU_RECEIVED or USER_ESTABLISHED event.
+ *
+ * An IB_CM_RTU_RECEIVED message indicates that the connection is established
+ * and that the recipient may begin transmitting (RTU = ready to use).
+ */
+static void srpt_cm_rtu_recv(struct ib_cm_id *cm_id)
+{
+	struct srpt_rdma_ch *ch;
+	int ret;
+
+	ch = srpt_find_channel(cm_id->context, cm_id);
+	BUG_ON(!ch);
+
+	if (srpt_test_and_set_ch_state(ch, CH_CONNECTING, CH_LIVE)) {
+		struct srpt_recv_ioctx *ioctx, *ioctx_tmp;
+
+		ret = srpt_ch_qp_rts(ch, ch->qp);
+
+		list_for_each_entry_safe(ioctx, ioctx_tmp, &ch->cmd_wait_list,
+					 wait_list) {
+			list_del(&ioctx->wait_list);
+			srpt_handle_new_iu(ch, ioctx, NULL);
+		}
+		if (ret)
+			srpt_close_ch(ch);
+	}
+}
+
+static void srpt_cm_timewait_exit(struct ib_cm_id *cm_id)
+{
+	printk(KERN_INFO "Received IB TimeWait exit for cm_id %p.\n", cm_id);
+	srpt_drain_channel(cm_id);
+}
+
+static void srpt_cm_rep_error(struct ib_cm_id *cm_id)
+{
+	printk(KERN_INFO "Received IB REP error for cm_id %p.\n", cm_id);
+	srpt_drain_channel(cm_id);
+}
+
+/**
+ * srpt_cm_dreq_recv() - Process reception of a DREQ message.
+ */
+static void srpt_cm_dreq_recv(struct ib_cm_id *cm_id)
+{
+	struct srpt_rdma_ch *ch;
+	unsigned long flags;
+	bool send_drep = false;
+
+	ch = srpt_find_channel(cm_id->context, cm_id);
+	BUG_ON(!ch);
+
+	pr_debug("cm_id= %p ch->state= %d\n", cm_id, srpt_get_ch_state(ch));
+
+	spin_lock_irqsave(&ch->spinlock, flags);
+	switch (ch->state) {
+	case CH_CONNECTING:
+	case CH_LIVE:
+		send_drep = true;
+		ch->state = CH_DISCONNECTING;
+		break;
+	case CH_DISCONNECTING:
+	case CH_DRAINING:
+	case CH_RELEASING:
+		WARN(true, "unexpected channel state %d\n", ch->state);
+		break;
+	}
+	spin_unlock_irqrestore(&ch->spinlock, flags);
+
+	if (send_drep) {
+		if (ib_send_cm_drep(ch->cm_id, NULL, 0) < 0)
+			printk(KERN_ERR "Sending IB DREP failed.\n");
+		printk(KERN_INFO "Received DREQ and sent DREP for session %s.\n",
+		       ch->sess_name);
+	}
+}
+
+/**
+ * srpt_cm_drep_recv() - Process reception of a DREP message.
+ */
+static void srpt_cm_drep_recv(struct ib_cm_id *cm_id)
+{
+	printk(KERN_INFO "Received InfiniBand DREP message for cm_id %p.\n",
+	       cm_id);
+	srpt_drain_channel(cm_id);
+}
+
+/**
+ * srpt_cm_handler() - IB connection manager callback function.
+ *
+ * A non-zero return value will cause the caller destroy the CM ID.
+ *
+ * Note: srpt_cm_handler() must only return a non-zero value when transferring
+ * ownership of the cm_id to a channel by srpt_cm_req_recv() failed. Returning
+ * a non-zero value in any other case will trigger a race with the
+ * ib_destroy_cm_id() call in srpt_release_channel().
+ */
+static int srpt_cm_handler(struct ib_cm_id *cm_id, struct ib_cm_event *event)
+{
+	int ret;
+
+	ret = 0;
+	switch (event->event) {
+	case IB_CM_REQ_RECEIVED:
+		ret = srpt_cm_req_recv(cm_id, &event->param.req_rcvd,
+				       event->private_data);
+		break;
+	case IB_CM_REJ_RECEIVED:
+		srpt_cm_rej_recv(cm_id);
+		break;
+	case IB_CM_RTU_RECEIVED:
+	case IB_CM_USER_ESTABLISHED:
+		srpt_cm_rtu_recv(cm_id);
+		break;
+	case IB_CM_DREQ_RECEIVED:
+		srpt_cm_dreq_recv(cm_id);
+		break;
+	case IB_CM_DREP_RECEIVED:
+		srpt_cm_drep_recv(cm_id);
+		break;
+	case IB_CM_TIMEWAIT_EXIT:
+		srpt_cm_timewait_exit(cm_id);
+		break;
+	case IB_CM_REP_ERROR:
+		srpt_cm_rep_error(cm_id);
+		break;
+	case IB_CM_DREQ_ERROR:
+		printk(KERN_INFO "Received IB DREQ ERROR event.\n");
+		break;
+	case IB_CM_MRA_RECEIVED:
+		printk(KERN_INFO "Received IB MRA event\n");
+		break;
+	default:
+		printk(KERN_ERR "received unrecognized IB CM event %d\n",
+		       event->event);
+		break;
+	}
+
+	return ret;
+}
+
+/**
+ * srpt_perform_rdmas() - Perform IB RDMA.
+ *
+ * Returns zero upon success or a negative number upon failure.
+ */
+static int srpt_perform_rdmas(struct srpt_rdma_ch *ch,
+			      struct srpt_send_ioctx *ioctx)
+{
+	struct ib_send_wr wr;
+	struct ib_send_wr *bad_wr;
+	struct rdma_iu *riu;
+	int i;
+	int ret;
+	int sq_wr_avail;
+	enum dma_data_direction dir;
+	const int n_rdma = ioctx->n_rdma;
+
+	dir = ioctx->cmd.data_direction;
+	if (dir == DMA_TO_DEVICE) {
+		/* write */
+		ret = -ENOMEM;
+		sq_wr_avail = atomic_sub_return(n_rdma, &ch->sq_wr_avail);
+		if (sq_wr_avail < 0) {
+			printk(KERN_WARNING "IB send queue full (needed %d)\n",
+			       n_rdma);
+			goto out;
+		}
+	}
+
+	ioctx->rdma_aborted = false;
+	ret = 0;
+	riu = ioctx->rdma_ius;
+	memset(&wr, 0, sizeof wr);
+
+	for (i = 0; i < n_rdma; ++i, ++riu) {
+		if (dir == DMA_FROM_DEVICE) {
+			wr.opcode = IB_WR_RDMA_WRITE;
+			wr.wr_id = encode_wr_id(i == n_rdma - 1 ?
+						SRPT_RDMA_WRITE_LAST :
+						SRPT_RDMA_MID,
+						ioctx->ioctx.index);
+		} else {
+			wr.opcode = IB_WR_RDMA_READ;
+			wr.wr_id = encode_wr_id(i == n_rdma - 1 ?
+						SRPT_RDMA_READ_LAST :
+						SRPT_RDMA_MID,
+						ioctx->ioctx.index);
+		}
+		wr.next = NULL;
+		wr.wr.rdma.remote_addr = riu->raddr;
+		wr.wr.rdma.rkey = riu->rkey;
+		wr.num_sge = riu->sge_cnt;
+		wr.sg_list = riu->sge;
+
+		/* only get completion event for the last rdma write */
+		if (i == (n_rdma - 1) && dir == DMA_TO_DEVICE)
+			wr.send_flags = IB_SEND_SIGNALED;
+
+		ret = ib_post_send(ch->qp, &wr, &bad_wr);
+		if (ret)
+			break;
+	}
+
+	if (ret)
+		printk(KERN_ERR "%s[%d]: ib_post_send() returned %d for %d/%d",
+				 __func__, __LINE__, ret, i, n_rdma);
+	if (ret && i > 0) {
+		wr.num_sge = 0;
+		wr.wr_id = encode_wr_id(SRPT_RDMA_ABORT, ioctx->ioctx.index);
+		wr.send_flags = IB_SEND_SIGNALED;
+		while (ch->state == CH_LIVE &&
+			ib_post_send(ch->qp, &wr, &bad_wr) != 0) {
+			printk(KERN_INFO "Trying to abort failed RDMA transfer [%d]",
+				ioctx->ioctx.index);
+			msleep(1000);
+		}
+		while (ch->state != CH_RELEASING && !ioctx->rdma_aborted) {
+			printk(KERN_INFO "Waiting until RDMA abort finished [%d]",
+				ioctx->ioctx.index);
+			msleep(1000);
+		}
+	}
+out:
+	if (unlikely(dir == DMA_TO_DEVICE && ret < 0))
+		atomic_add(n_rdma, &ch->sq_wr_avail);
+	return ret;
+}
+
+/**
+ * srpt_xfer_data() - Start data transfer from initiator to target.
+ */
+static int srpt_xfer_data(struct srpt_rdma_ch *ch,
+			  struct srpt_send_ioctx *ioctx)
+{
+	int ret;
+
+	ret = srpt_map_sg_to_ib_sge(ch, ioctx);
+	if (ret) {
+		printk(KERN_ERR "%s[%d] ret=%d\n", __func__, __LINE__, ret);
+		goto out;
+	}
+
+	ret = srpt_perform_rdmas(ch, ioctx);
+	if (ret) {
+		if (ret == -EAGAIN || ret == -ENOMEM)
+			printk(KERN_INFO "%s[%d] queue full -- ret=%d\n",
+				   __func__, __LINE__, ret);
+		else
+			printk(KERN_ERR "%s[%d] fatal error -- ret=%d\n",
+			       __func__, __LINE__, ret);
+		goto out_unmap;
+	}
+
+out:
+	return ret;
+out_unmap:
+	srpt_unmap_sg_to_ib_sge(ch, ioctx);
+	goto out;
+}
+
+static int srpt_write_pending_status(struct se_cmd *se_cmd)
+{
+	struct srpt_send_ioctx *ioctx;
+
+	ioctx = container_of(se_cmd, struct srpt_send_ioctx, cmd);
+	return srpt_get_cmd_state(ioctx) == SRPT_STATE_NEED_DATA;
+}
+
+/*
+ * srpt_write_pending() - Start data transfer from initiator to target (write).
+ */
+static int srpt_write_pending(struct se_cmd *se_cmd)
+{
+	struct srpt_rdma_ch *ch;
+	struct srpt_send_ioctx *ioctx;
+	enum srpt_command_state new_state;
+	enum rdma_ch_state ch_state;
+	int ret;
+
+	ioctx = container_of(se_cmd, struct srpt_send_ioctx, cmd);
+
+	new_state = srpt_set_cmd_state(ioctx, SRPT_STATE_NEED_DATA);
+	WARN_ON(new_state == SRPT_STATE_DONE);
+
+	ch = ioctx->ch;
+	BUG_ON(!ch);
+
+	ch_state = srpt_get_ch_state(ch);
+	switch (ch_state) {
+	case CH_CONNECTING:
+		WARN(true, "unexpected channel state %d\n", ch_state);
+		ret = -EINVAL;
+		goto out;
+	case CH_LIVE:
+		break;
+	case CH_DISCONNECTING:
+	case CH_DRAINING:
+	case CH_RELEASING:
+		pr_debug("cmd with tag %lld: channel disconnecting\n",
+			 ioctx->tag);
+		srpt_set_cmd_state(ioctx, SRPT_STATE_DATA_IN);
+		ret = -EINVAL;
+		goto out;
+	}
+	ret = srpt_xfer_data(ch, ioctx);
+
+out:
+	return ret;
+}
+
+static u8 tcm_to_srp_tsk_mgmt_status(const int tcm_mgmt_status)
+{
+	switch (tcm_mgmt_status) {
+	case TMR_FUNCTION_COMPLETE:
+		return SRP_TSK_MGMT_SUCCESS;
+	case TMR_FUNCTION_REJECTED:
+		return SRP_TSK_MGMT_FUNC_NOT_SUPP;
+	}
+	return SRP_TSK_MGMT_FAILED;
+}
+
+/**
+ * srpt_queue_response() - Transmits the response to a SCSI command.
+ *
+ * Callback function called by the TCM core. Must not block since it can be
+ * invoked on the context of the IB completion handler.
+ */
+static int srpt_queue_response(struct se_cmd *cmd)
+{
+	struct srpt_rdma_ch *ch;
+	struct srpt_send_ioctx *ioctx;
+	enum srpt_command_state state;
+	unsigned long flags;
+	int ret;
+	enum dma_data_direction dir;
+	int resp_len;
+	u8 srp_tm_status;
+
+	ret = 0;
+
+	ioctx = container_of(cmd, struct srpt_send_ioctx, cmd);
+	ch = ioctx->ch;
+	BUG_ON(!ch);
+
+	spin_lock_irqsave(&ioctx->spinlock, flags);
+	state = ioctx->state;
+	switch (state) {
+	case SRPT_STATE_NEW:
+	case SRPT_STATE_DATA_IN:
+		ioctx->state = SRPT_STATE_CMD_RSP_SENT;
+		break;
+	case SRPT_STATE_MGMT:
+		ioctx->state = SRPT_STATE_MGMT_RSP_SENT;
+		break;
+	default:
+		WARN(true, "ch %p; cmd %d: unexpected command state %d\n",
+			ch, ioctx->ioctx.index, ioctx->state);
+		break;
+	}
+	spin_unlock_irqrestore(&ioctx->spinlock, flags);
+
+	if (unlikely(transport_check_aborted_status(&ioctx->cmd, false)
+		     || WARN_ON_ONCE(state == SRPT_STATE_CMD_RSP_SENT))) {
+		atomic_inc(&ch->req_lim_delta);
+		srpt_abort_cmd(ioctx);
+		goto out;
+	}
+
+	dir = ioctx->cmd.data_direction;
+
+	/* For read commands, transfer the data to the initiator. */
+	if (dir == DMA_FROM_DEVICE && ioctx->cmd.data_length &&
+	    !ioctx->queue_status_only) {
+		ret = srpt_xfer_data(ch, ioctx);
+		if (ret) {
+			printk(KERN_ERR "xfer_data failed for tag %llu\n",
+			       ioctx->tag);
+			goto out;
+		}
+	}
+
+	if (state != SRPT_STATE_MGMT)
+		resp_len = srpt_build_cmd_rsp(ch, ioctx, ioctx->tag,
+					      cmd->scsi_status);
+	else {
+		srp_tm_status
+			= tcm_to_srp_tsk_mgmt_status(cmd->se_tmr_req->response);
+		resp_len = srpt_build_tskmgmt_rsp(ch, ioctx, srp_tm_status,
+						 ioctx->tag);
+	}
+	ret = srpt_post_send(ch, ioctx, resp_len);
+	if (ret) {
+		printk(KERN_ERR "sending cmd response failed for tag %llu\n",
+		       ioctx->tag);
+		srpt_unmap_sg_to_ib_sge(ch, ioctx);
+		srpt_set_cmd_state(ioctx, SRPT_STATE_DONE);
+		kref_put(&ioctx->kref, srpt_put_send_ioctx_kref);
+	}
+
+out:
+	return ret;
+}
+
+static int srpt_queue_status(struct se_cmd *cmd)
+{
+	struct srpt_send_ioctx *ioctx;
+
+	ioctx = container_of(cmd, struct srpt_send_ioctx, cmd);
+	BUG_ON(ioctx->sense_data != cmd->sense_buffer);
+	if (cmd->se_cmd_flags &
+	    (SCF_TRANSPORT_TASK_SENSE | SCF_EMULATED_TASK_SENSE))
+		WARN_ON(cmd->scsi_status != SAM_STAT_CHECK_CONDITION);
+	ioctx->queue_status_only = true;
+	return srpt_queue_response(cmd);
+}
+
+static void srpt_refresh_port_work(struct work_struct *work)
+{
+	struct srpt_port *sport = container_of(work, struct srpt_port, work);
+
+	srpt_refresh_port(sport);
+}
+
+static int srpt_ch_list_empty(struct srpt_device *sdev)
+{
+	int res;
+
+	spin_lock_irq(&sdev->spinlock);
+	res = list_empty(&sdev->rch_list);
+	spin_unlock_irq(&sdev->spinlock);
+
+	return res;
+}
+
+/**
+ * srpt_release_sdev() - Free the channel resources associated with a target.
+ */
+static int srpt_release_sdev(struct srpt_device *sdev)
+{
+	struct srpt_rdma_ch *ch, *tmp_ch;
+	int res;
+
+	WARN_ON_ONCE(irqs_disabled());
+
+	BUG_ON(!sdev);
+
+	spin_lock_irq(&sdev->spinlock);
+	list_for_each_entry_safe(ch, tmp_ch, &sdev->rch_list, list)
+		__srpt_close_ch(ch);
+	spin_unlock_irq(&sdev->spinlock);
+
+	res = wait_event_interruptible(sdev->ch_releaseQ,
+				       srpt_ch_list_empty(sdev));
+	if (res)
+		printk(KERN_ERR "%s: interrupted.\n", __func__);
+
+	return 0;
+}
+
+static struct srpt_port *__srpt_lookup_port(const char *name)
+{
+	struct ib_device *dev;
+	struct srpt_device *sdev;
+	struct srpt_port *sport;
+	int i;
+
+	list_for_each_entry(sdev, &srpt_dev_list, list) {
+		dev = sdev->device;
+		if (!dev)
+			continue;
+
+		for (i = 0; i < dev->phys_port_cnt; i++) {
+			sport = &sdev->port[i];
+
+			if (!strcmp(sport->port_guid, name))
+				return sport;
+		}
+	}
+
+	return NULL;
+}
+
+static struct srpt_port *srpt_lookup_port(const char *name)
+{
+	struct srpt_port *sport;
+
+	spin_lock(&srpt_dev_lock);
+	sport = __srpt_lookup_port(name);
+	spin_unlock(&srpt_dev_lock);
+
+	return sport;
+}
+
+/**
+ * srpt_add_one() - Infiniband device addition callback function.
+ */
+static void srpt_add_one(struct ib_device *device)
+{
+	struct srpt_device *sdev;
+	struct srpt_port *sport;
+	struct ib_srq_init_attr srq_attr;
+	int i;
+
+	pr_debug("device = %p, device->dma_ops = %p\n", device,
+		 device->dma_ops);
+
+	sdev = kzalloc(sizeof *sdev, GFP_KERNEL);
+	if (!sdev)
+		goto err;
+
+	sdev->device = device;
+	INIT_LIST_HEAD(&sdev->rch_list);
+	init_waitqueue_head(&sdev->ch_releaseQ);
+	spin_lock_init(&sdev->spinlock);
+
+	if (ib_query_device(device, &sdev->dev_attr))
+		goto free_dev;
+
+	sdev->pd = ib_alloc_pd(device);
+	if (IS_ERR(sdev->pd))
+		goto free_dev;
+
+	sdev->mr = ib_get_dma_mr(sdev->pd, IB_ACCESS_LOCAL_WRITE);
+	if (IS_ERR(sdev->mr))
+		goto err_pd;
+
+	sdev->srq_size = min(srpt_srq_size, sdev->dev_attr.max_srq_wr);
+
+	srq_attr.event_handler = srpt_srq_event;
+	srq_attr.srq_context = (void *)sdev;
+	srq_attr.attr.max_wr = sdev->srq_size;
+	srq_attr.attr.max_sge = 1;
+	srq_attr.attr.srq_limit = 0;
+
+	sdev->srq = ib_create_srq(sdev->pd, &srq_attr);
+	if (IS_ERR(sdev->srq))
+		goto err_mr;
+
+	pr_debug("%s: create SRQ #wr= %d max_allow=%d dev= %s\n",
+		 __func__, sdev->srq_size, sdev->dev_attr.max_srq_wr,
+		 device->name);
+
+	if (!srpt_service_guid)
+		srpt_service_guid = be64_to_cpu(device->node_guid);
+
+	sdev->cm_id = ib_create_cm_id(device, srpt_cm_handler, sdev);
+	if (IS_ERR(sdev->cm_id))
+		goto err_srq;
+
+	/* print out target login information */
+	pr_debug("Target login info: id_ext=%016llx,ioc_guid=%016llx,"
+		 "pkey=ffff,service_id=%016llx\n", srpt_service_guid,
+		 srpt_service_guid, srpt_service_guid);
+
+	/*
+	 * We do not have a consistent service_id (ie. also id_ext of target_id)
+	 * to identify this target. We currently use the guid of the first HCA
+	 * in the system as service_id; therefore, the target_id will change
+	 * if this HCA is gone bad and replaced by different HCA
+	 */
+	if (ib_cm_listen(sdev->cm_id, cpu_to_be64(srpt_service_guid), 0, NULL))
+		goto err_cm;
+
+	INIT_IB_EVENT_HANDLER(&sdev->event_handler, sdev->device,
+			      srpt_event_handler);
+	if (ib_register_event_handler(&sdev->event_handler))
+		goto err_cm;
+
+	sdev->ioctx_ring = (struct srpt_recv_ioctx **)
+		srpt_alloc_ioctx_ring(sdev, sdev->srq_size,
+				      sizeof(*sdev->ioctx_ring[0]),
+				      srp_max_req_size, DMA_FROM_DEVICE);
+	if (!sdev->ioctx_ring)
+		goto err_event;
+
+	for (i = 0; i < sdev->srq_size; ++i)
+		srpt_post_recv(sdev, sdev->ioctx_ring[i]);
+
+	WARN_ON(sdev->device->phys_port_cnt
+		> sizeof(sdev->port)/sizeof(sdev->port[0]));
+
+	for (i = 1; i <= sdev->device->phys_port_cnt; i++) {
+		sport = &sdev->port[i - 1];
+		sport->sdev = sdev;
+		sport->port = i;
+		sport->port_attrib.srp_max_rdma_size = DEFAULT_MAX_RDMA_SIZE;
+		sport->port_attrib.srp_max_rsp_size = DEFAULT_MAX_RSP_SIZE;
+		sport->port_attrib.srp_sq_size = DEF_SRPT_SQ_SIZE;
+		INIT_WORK(&sport->work, srpt_refresh_port_work);
+		INIT_LIST_HEAD(&sport->port_acl_list);
+		spin_lock_init(&sport->port_acl_lock);
+
+		if (srpt_refresh_port(sport)) {
+			printk(KERN_ERR "MAD registration failed for %s-%d.\n",
+			       srpt_sdev_name(sdev), i);
+			goto err_ring;
+		}
+		snprintf(sport->port_guid, sizeof(sport->port_guid),
+			"0x%016llx%016llx",
+			be64_to_cpu(sport->gid.global.subnet_prefix),
+			be64_to_cpu(sport->gid.global.interface_id));
+	}
+
+	spin_lock(&srpt_dev_lock);
+	list_add_tail(&sdev->list, &srpt_dev_list);
+	spin_unlock(&srpt_dev_lock);
+
+out:
+	ib_set_client_data(device, &srpt_client, sdev);
+	pr_debug("added %s.\n", device->name);
+	return;
+
+err_ring:
+	srpt_free_ioctx_ring((struct srpt_ioctx **)sdev->ioctx_ring, sdev,
+			     sdev->srq_size, srp_max_req_size,
+			     DMA_FROM_DEVICE);
+err_event:
+	ib_unregister_event_handler(&sdev->event_handler);
+err_cm:
+	ib_destroy_cm_id(sdev->cm_id);
+err_srq:
+	ib_destroy_srq(sdev->srq);
+err_mr:
+	ib_dereg_mr(sdev->mr);
+err_pd:
+	ib_dealloc_pd(sdev->pd);
+free_dev:
+	kfree(sdev);
+err:
+	sdev = NULL;
+	printk(KERN_INFO "%s(%s) failed.\n", __func__, device->name);
+	goto out;
+}
+
+/**
+ * srpt_remove_one() - InfiniBand device removal callback function.
+ */
+static void srpt_remove_one(struct ib_device *device)
+{
+	struct srpt_device *sdev;
+	int i;
+
+	sdev = ib_get_client_data(device, &srpt_client);
+	if (!sdev) {
+		printk(KERN_INFO "%s(%s): nothing to do.\n", __func__,
+		       device->name);
+		return;
+	}
+
+	srpt_unregister_mad_agent(sdev);
+
+	ib_unregister_event_handler(&sdev->event_handler);
+
+	/* Cancel any work queued by the just unregistered IB event handler. */
+	for (i = 0; i < sdev->device->phys_port_cnt; i++)
+		cancel_work_sync(&sdev->port[i].work);
+
+	ib_destroy_cm_id(sdev->cm_id);
+
+	/*
+	 * Unregistering a target must happen after destroying sdev->cm_id
+	 * such that no new SRP_LOGIN_REQ information units can arrive while
+	 * destroying the target.
+	 */
+	spin_lock(&srpt_dev_lock);
+	list_del(&sdev->list);
+	spin_unlock(&srpt_dev_lock);
+	srpt_release_sdev(sdev);
+
+	ib_destroy_srq(sdev->srq);
+	ib_dereg_mr(sdev->mr);
+	ib_dealloc_pd(sdev->pd);
+
+	srpt_free_ioctx_ring((struct srpt_ioctx **)sdev->ioctx_ring, sdev,
+			     sdev->srq_size, srp_max_req_size, DMA_FROM_DEVICE);
+	sdev->ioctx_ring = NULL;
+	kfree(sdev);
+}
+
+static struct ib_client srpt_client = {
+	.name = DRV_NAME,
+	.add = srpt_add_one,
+	.remove = srpt_remove_one
+};
+
+static int srpt_check_true(struct se_portal_group *se_tpg)
+{
+	return 1;
+}
+
+static int srpt_check_false(struct se_portal_group *se_tpg)
+{
+	return 0;
+}
+
+static char *srpt_get_fabric_name(void)
+{
+	return "srpt";
+}
+
+static u8 srpt_get_fabric_proto_ident(struct se_portal_group *se_tpg)
+{
+	return SCSI_TRANSPORTID_PROTOCOLID_SRP;
+}
+
+static char *srpt_get_fabric_wwn(struct se_portal_group *tpg)
+{
+	struct srpt_port *sport = container_of(tpg, struct srpt_port, port_tpg_1);
+
+	return sport->port_guid;
+}
+
+static u16 srpt_get_tag(struct se_portal_group *tpg)
+{
+	return 1;
+}
+
+static u32 srpt_get_default_depth(struct se_portal_group *se_tpg)
+{
+	return 1;
+}
+
+static u32 srpt_get_pr_transport_id(struct se_portal_group *se_tpg,
+				    struct se_node_acl *se_nacl,
+				    struct t10_pr_registration *pr_reg,
+				    int *format_code, unsigned char *buf)
+{
+	struct srpt_node_acl *nacl;
+	struct spc_rdma_transport_id *tr_id;
+
+	nacl = container_of(se_nacl, struct srpt_node_acl, nacl);
+	tr_id = (void *)buf;
+	tr_id->protocol_identifier = SCSI_TRANSPORTID_PROTOCOLID_SRP;
+	memcpy(tr_id->i_port_id, nacl->i_port_id, sizeof(tr_id->i_port_id));
+	return sizeof(*tr_id);
+}
+
+static u32 srpt_get_pr_transport_id_len(struct se_portal_group *se_tpg,
+					struct se_node_acl *se_nacl,
+					struct t10_pr_registration *pr_reg,
+					int *format_code)
+{
+	*format_code = 0;
+	return sizeof(struct spc_rdma_transport_id);
+}
+
+static char *srpt_parse_pr_out_transport_id(struct se_portal_group *se_tpg,
+					    const char *buf, u32 *out_tid_len,
+					    char **port_nexus_ptr)
+{
+	struct spc_rdma_transport_id *tr_id;
+
+	*port_nexus_ptr = NULL;
+	*out_tid_len = sizeof(struct spc_rdma_transport_id);
+	tr_id = (void *)buf;
+	return (char *)tr_id->i_port_id;
+}
+
+static struct se_node_acl *srpt_alloc_fabric_acl(struct se_portal_group *se_tpg)
+{
+	struct srpt_node_acl *nacl;
+
+	nacl = kzalloc(sizeof(struct srpt_node_acl), GFP_KERNEL);
+	if (!nacl) {
+		printk(KERN_ERR "Unable to alocate struct srpt_node_acl\n");
+		return NULL;
+	}
+
+	return &nacl->nacl;
+}
+
+static void srpt_release_fabric_acl(struct se_portal_group *se_tpg,
+				    struct se_node_acl *se_nacl)
+{
+	struct srpt_node_acl *nacl;
+
+	nacl = container_of(se_nacl, struct srpt_node_acl, nacl);
+	kfree(nacl);
+}
+
+static u32 srpt_tpg_get_inst_index(struct se_portal_group *se_tpg)
+{
+	return 1;
+}
+
+static void srpt_release_cmd(struct se_cmd *se_cmd)
+{
+}
+
+/**
+ * srpt_shutdown_session() - Whether or not a session may be shut down.
+ */
+static int srpt_shutdown_session(struct se_session *se_sess)
+{
+	return true;
+}
+
+/**
+ * srpt_close_session() - Forcibly close a session.
+ *
+ * Callback function invoked by the TCM core to clean up sessions associated
+ * with a node ACL when the user invokes
+ * rmdir /sys/kernel/config/target/$driver/$port/$tpg/acls/$i_port_id
+ */
+static void srpt_close_session(struct se_session *se_sess)
+{
+	DECLARE_COMPLETION_ONSTACK(release_done);
+	struct srpt_rdma_ch *ch;
+	struct srpt_device *sdev;
+	int res;
+
+	ch = se_sess->fabric_sess_ptr;
+	WARN_ON(ch->sess != se_sess);
+
+	pr_debug("ch %p state %d\n", ch, srpt_get_ch_state(ch));
+
+	sdev = ch->sport->sdev;
+	spin_lock_irq(&sdev->spinlock);
+	BUG_ON(ch->release_done);
+	ch->release_done = &release_done;
+	__srpt_close_ch(ch);
+	spin_unlock_irq(&sdev->spinlock);
+
+	res = wait_for_completion_timeout(&release_done, 60 * HZ);
+	WARN_ON(res <= 0);
+}
+
+/**
+ * To do: Find out whether stop_session() has a meaning for transports
+ * other than iSCSI.
+ */
+static void srpt_stop_session(struct se_session *se_sess, int sess_sleep,
+			      int conn_sleep)
+{
+}
+
+static void srpt_reset_nexus(struct se_session *sess)
+{
+	printk(KERN_ERR "This is the SRP protocol, not iSCSI\n");
+}
+
+static int srpt_sess_logged_in(struct se_session *se_sess)
+{
+	return true;
+}
+
+/**
+ * srpt_sess_get_index() - Return the value of scsiAttIntrPortIndex (SCSI-MIB).
+ *
+ * A quote from RFC 4455 (SCSI-MIB) about this MIB object:
+ * This object represents an arbitrary integer used to uniquely identify a
+ * particular attached remote initiator port to a particular SCSI target port
+ * within a particular SCSI target device within a particular SCSI instance.
+ */
+static u32 srpt_sess_get_index(struct se_session *se_sess)
+{
+	return 0;
+}
+
+static void srpt_set_default_node_attrs(struct se_node_acl *nacl)
+{
+}
+
+static u32 srpt_get_task_tag(struct se_cmd *se_cmd)
+{
+	struct srpt_send_ioctx *ioctx;
+
+	ioctx = container_of(se_cmd, struct srpt_send_ioctx, cmd);
+	return ioctx->tag;
+}
+
+/* Note: only used from inside debug printk's by the TCM core. */
+static int srpt_get_tcm_cmd_state(struct se_cmd *se_cmd)
+{
+	struct srpt_send_ioctx *ioctx;
+
+	ioctx = container_of(se_cmd, struct srpt_send_ioctx, cmd);
+	return srpt_get_cmd_state(ioctx);
+}
+
+static u16 srpt_set_fabric_sense_len(struct se_cmd *cmd, u32 sense_length)
+{
+	return 0;
+}
+
+static u16 srpt_get_fabric_sense_len(void)
+{
+	return 0;
+}
+
+static int srpt_is_state_remove(struct se_cmd *se_cmd)
+{
+	return 0;
+}
+
+/**
+ * srpt_parse_i_port_id() - Parse an initiator port ID.
+ * @name: ASCII representation of a 128-bit initiator port ID.
+ * @i_port_id: Binary 128-bit port ID.
+ */
+static int srpt_parse_i_port_id(u8 i_port_id[16], const char *name)
+{
+	const char *p;
+	unsigned len, count, leading_zero_bytes;
+	int ret, rc;
+
+	p = name;
+	if (strnicmp(p, "0x", 2) == 0)
+		p += 2;
+	ret = -EINVAL;
+	len = strlen(p);
+	if (len % 2)
+		goto out;
+	count = min(len / 2, 16U);
+	leading_zero_bytes = 16 - count;
+	memset(i_port_id, 0, leading_zero_bytes);
+	rc = hex2bin(i_port_id + leading_zero_bytes, p, count);
+	if (rc < 0)
+		pr_debug("hex2bin failed for srpt_parse_i_port_id: %d\n", rc);
+	ret = 0;
+out:
+	return ret;
+}
+
+/*
+ * configfs callback function invoked for
+ * mkdir /sys/kernel/config/target/$driver/$port/$tpg/acls/$i_port_id
+ */
+static struct se_node_acl *srpt_make_nodeacl(struct se_portal_group *tpg,
+					     struct config_group *group,
+					     const char *name)
+{
+	struct srpt_port *sport = container_of(tpg, struct srpt_port, port_tpg_1);
+	struct se_node_acl *se_nacl, *se_nacl_new;
+	struct srpt_node_acl *nacl;
+	int ret = 0;
+	u32 nexus_depth = 1;
+	u8 i_port_id[16];
+
+	if (srpt_parse_i_port_id(i_port_id, name) < 0) {
+		printk(KERN_ERR "invalid initiator port ID %s\n", name);
+		ret = -EINVAL;
+		goto err;
+	}
+
+	se_nacl_new = srpt_alloc_fabric_acl(tpg);
+	if (!se_nacl_new) {
+		ret = -ENOMEM;
+		goto err;
+	}
+	/*
+	 * nacl_new may be released by core_tpg_add_initiator_node_acl()
+	 * when converting a node ACL from demo mode to explict
+	 */
+	se_nacl = core_tpg_add_initiator_node_acl(tpg, se_nacl_new, name,
+						  nexus_depth);
+	if (IS_ERR(se_nacl)) {
+		ret = PTR_ERR(se_nacl);
+		goto err;
+	}
+	/* Locate our struct srpt_node_acl and set sdev and i_port_id. */
+	nacl = container_of(se_nacl, struct srpt_node_acl, nacl);
+	memcpy(&nacl->i_port_id[0], &i_port_id[0], 16);
+	nacl->sport = sport;
+
+	spin_lock_irq(&sport->port_acl_lock);
+	list_add_tail(&nacl->list, &sport->port_acl_list);
+	spin_unlock_irq(&sport->port_acl_lock);
+
+	return se_nacl;
+err:
+	return ERR_PTR(ret);
+}
+
+/*
+ * configfs callback function invoked for
+ * rmdir /sys/kernel/config/target/$driver/$port/$tpg/acls/$i_port_id
+ */
+static void srpt_drop_nodeacl(struct se_node_acl *se_nacl)
+{
+	struct srpt_node_acl *nacl;
+	struct srpt_device *sdev;
+	struct srpt_port *sport;
+
+	nacl = container_of(se_nacl, struct srpt_node_acl, nacl);
+	sport = nacl->sport;
+	sdev = sport->sdev;
+	spin_lock_irq(&sport->port_acl_lock);
+	list_del(&nacl->list);
+	spin_unlock_irq(&sport->port_acl_lock);
+	core_tpg_del_initiator_node_acl(&sport->port_tpg_1, se_nacl, 1);
+	srpt_release_fabric_acl(NULL, se_nacl);
+}
+
+static ssize_t srpt_tpg_attrib_show_srp_max_rdma_size(
+	struct se_portal_group *se_tpg,
+	char *page)
+{
+	struct srpt_port *sport = container_of(se_tpg, struct srpt_port, port_tpg_1);
+
+	return sprintf(page, "%u\n", sport->port_attrib.srp_max_rdma_size);
+}
+
+static ssize_t srpt_tpg_attrib_store_srp_max_rdma_size(
+	struct se_portal_group *se_tpg,
+	const char *page,
+	size_t count)
+{
+	struct srpt_port *sport = container_of(se_tpg, struct srpt_port, port_tpg_1);
+	unsigned long val;
+	int ret;
+
+	ret = strict_strtoul(page, 0, &val);
+	if (ret < 0) {
+		pr_err("strict_strtoul() failed with ret: %d\n", ret);
+		return -EINVAL;
+	}
+	if (val > MAX_SRPT_RDMA_SIZE) {
+		pr_err("val: %lu exceeds MAX_SRPT_RDMA_SIZE: %d\n", val,
+			MAX_SRPT_RDMA_SIZE);
+		return -EINVAL;
+	}
+	if (val < DEFAULT_MAX_RDMA_SIZE) {
+		pr_err("val: %lu smaller than DEFAULT_MAX_RDMA_SIZE: %d\n",
+			val, DEFAULT_MAX_RDMA_SIZE);
+		return -EINVAL;
+	}
+	sport->port_attrib.srp_max_rdma_size = val;
+
+	return count;
+}
+
+TF_TPG_ATTRIB_ATTR(srpt, srp_max_rdma_size, S_IRUGO | S_IWUSR);
+
+static ssize_t srpt_tpg_attrib_show_srp_max_rsp_size(
+	struct se_portal_group *se_tpg,
+	char *page)
+{
+	struct srpt_port *sport = container_of(se_tpg, struct srpt_port, port_tpg_1);
+
+	return sprintf(page, "%u\n", sport->port_attrib.srp_max_rsp_size);
+}
+
+static ssize_t srpt_tpg_attrib_store_srp_max_rsp_size(
+	struct se_portal_group *se_tpg,
+	const char *page,
+	size_t count)
+{
+	struct srpt_port *sport = container_of(se_tpg, struct srpt_port, port_tpg_1);
+	unsigned long val;
+	int ret;
+
+	ret = strict_strtoul(page, 0, &val);
+	if (ret < 0) {
+		pr_err("strict_strtoul() failed with ret: %d\n", ret);
+		return -EINVAL;
+	}
+	if (val > MAX_SRPT_RSP_SIZE) {
+		pr_err("val: %lu exceeds MAX_SRPT_RSP_SIZE: %d\n", val,
+			MAX_SRPT_RSP_SIZE);
+		return -EINVAL;
+	}
+	if (val < MIN_MAX_RSP_SIZE) {
+		pr_err("val: %lu smaller than MIN_MAX_RSP_SIZE: %d\n", val,
+			MIN_MAX_RSP_SIZE);
+		return -EINVAL;
+	}
+	sport->port_attrib.srp_max_rsp_size = val;
+
+	return count;
+}
+
+TF_TPG_ATTRIB_ATTR(srpt, srp_max_rsp_size, S_IRUGO | S_IWUSR);
+
+static ssize_t srpt_tpg_attrib_show_srp_sq_size(
+	struct se_portal_group *se_tpg,
+	char *page)
+{
+	struct srpt_port *sport = container_of(se_tpg, struct srpt_port, port_tpg_1);
+
+	return sprintf(page, "%u\n", sport->port_attrib.srp_sq_size);
+}
+
+static ssize_t srpt_tpg_attrib_store_srp_sq_size(
+	struct se_portal_group *se_tpg,
+	const char *page,
+	size_t count)
+{
+	struct srpt_port *sport = container_of(se_tpg, struct srpt_port, port_tpg_1);
+	unsigned long val;
+	int ret;
+
+	ret = strict_strtoul(page, 0, &val);
+	if (ret < 0) {
+		pr_err("strict_strtoul() failed with ret: %d\n", ret);
+		return -EINVAL;
+	}
+	if (val > MAX_SRPT_SRQ_SIZE) {
+		pr_err("val: %lu exceeds MAX_SRPT_SRQ_SIZE: %d\n", val,
+			MAX_SRPT_SRQ_SIZE);
+		return -EINVAL;
+	}
+	if (val < MIN_SRPT_SRQ_SIZE) {
+		pr_err("val: %lu smaller than MIN_SRPT_SRQ_SIZE: %d\n", val,
+			MIN_SRPT_SRQ_SIZE);
+		return -EINVAL;
+	}
+	sport->port_attrib.srp_sq_size = val;
+
+	return count;
+}
+
+TF_TPG_ATTRIB_ATTR(srpt, srp_sq_size, S_IRUGO | S_IWUSR);
+
+static struct configfs_attribute *srpt_tpg_attrib_attrs[] = {
+	&srpt_tpg_attrib_srp_max_rdma_size.attr,
+	&srpt_tpg_attrib_srp_max_rsp_size.attr,
+	&srpt_tpg_attrib_srp_sq_size.attr,
+	NULL,
+};
+
+static ssize_t srpt_tpg_show_enable(
+	struct se_portal_group *se_tpg,
+	char *page)
+{
+	struct srpt_port *sport = container_of(se_tpg, struct srpt_port, port_tpg_1);
+
+	return snprintf(page, PAGE_SIZE, "%d\n", (sport->enabled) ? 1: 0);
+}
+
+static ssize_t srpt_tpg_store_enable(
+	struct se_portal_group *se_tpg,
+	const char *page,
+	size_t count)
+{
+	struct srpt_port *sport = container_of(se_tpg, struct srpt_port, port_tpg_1);
+	unsigned long tmp;
+        int ret;
+
+	ret = strict_strtoul(page, 0, &tmp);
+	if (ret < 0) {
+		printk(KERN_ERR "Unable to extract srpt_tpg_store_enable\n");
+		return -EINVAL;
+	}
+
+	if ((tmp != 0) && (tmp != 1)) {
+		printk(KERN_ERR "Illegal value for srpt_tpg_store_enable: %lu\n", tmp);
+		return -EINVAL;
+	}
+	if (tmp == 1)
+		sport->enabled = true;
+	else
+		sport->enabled = false;
+
+	return count;
+}
+
+TF_TPG_BASE_ATTR(srpt, enable, S_IRUGO | S_IWUSR);
+
+static struct configfs_attribute *srpt_tpg_attrs[] = {
+	&srpt_tpg_enable.attr,
+	NULL,
+};
+
+/**
+ * configfs callback invoked for
+ * mkdir /sys/kernel/config/target/$driver/$port/$tpg
+ */
+static struct se_portal_group *srpt_make_tpg(struct se_wwn *wwn,
+					     struct config_group *group,
+					     const char *name)
+{
+	struct srpt_port *sport = container_of(wwn, struct srpt_port, port_wwn);
+	int res;
+
+	/* Initialize sport->port_wwn and sport->port_tpg_1 */
+	res = core_tpg_register(&srpt_target->tf_ops, &sport->port_wwn,
+			&sport->port_tpg_1, sport, TRANSPORT_TPG_TYPE_NORMAL);
+	if (res)
+		return ERR_PTR(res);
+
+	return &sport->port_tpg_1;
+}
+
+/**
+ * configfs callback invoked for
+ * rmdir /sys/kernel/config/target/$driver/$port/$tpg
+ */
+static void srpt_drop_tpg(struct se_portal_group *tpg)
+{
+	struct srpt_port *sport = container_of(tpg,
+				struct srpt_port, port_tpg_1);
+
+	sport->enabled = false;
+	core_tpg_deregister(&sport->port_tpg_1);
+}
+
+/**
+ * configfs callback invoked for
+ * mkdir /sys/kernel/config/target/$driver/$port
+ */
+static struct se_wwn *srpt_make_tport(struct target_fabric_configfs *tf,
+				      struct config_group *group,
+				      const char *name)
+{
+	struct srpt_port *sport;
+	int ret;
+
+	sport = srpt_lookup_port(name);
+	pr_debug("make_tport(%s)\n", name);
+	ret = -EINVAL;
+	if (!sport)
+		goto err;
+
+	return &sport->port_wwn;
+
+err:
+	return ERR_PTR(ret);
+}
+
+/**
+ * configfs callback invoked for
+ * rmdir /sys/kernel/config/target/$driver/$port
+ */
+static void srpt_drop_tport(struct se_wwn *wwn)
+{
+	struct srpt_port *sport = container_of(wwn, struct srpt_port, port_wwn);
+
+	pr_debug("drop_tport(%s\n", config_item_name(&sport->port_wwn.wwn_group.cg_item));
+}
+
+static ssize_t srpt_wwn_show_attr_version(struct target_fabric_configfs *tf,
+					      char *buf)
+{
+	return scnprintf(buf, PAGE_SIZE, "%s\n", DRV_VERSION);
+}
+
+TF_WWN_ATTR_RO(srpt, version);
+
+static struct configfs_attribute *srpt_wwn_attrs[] = {
+	&srpt_wwn_version.attr,
+	NULL,
+};
+
+static struct target_core_fabric_ops srpt_template = {
+	.get_fabric_name		= srpt_get_fabric_name,
+	.get_fabric_proto_ident		= srpt_get_fabric_proto_ident,
+	.tpg_get_wwn			= srpt_get_fabric_wwn,
+	.tpg_get_tag			= srpt_get_tag,
+	.tpg_get_default_depth		= srpt_get_default_depth,
+	.tpg_get_pr_transport_id	= srpt_get_pr_transport_id,
+	.tpg_get_pr_transport_id_len	= srpt_get_pr_transport_id_len,
+	.tpg_parse_pr_out_transport_id	= srpt_parse_pr_out_transport_id,
+	.tpg_check_demo_mode		= srpt_check_false,
+	.tpg_check_demo_mode_cache	= srpt_check_true,
+	.tpg_check_demo_mode_write_protect = srpt_check_true,
+	.tpg_check_prod_mode_write_protect = srpt_check_false,
+	.tpg_alloc_fabric_acl		= srpt_alloc_fabric_acl,
+	.tpg_release_fabric_acl		= srpt_release_fabric_acl,
+	.tpg_get_inst_index		= srpt_tpg_get_inst_index,
+	.release_cmd			= srpt_release_cmd,
+	.check_stop_free		= srpt_check_stop_free,
+	.shutdown_session		= srpt_shutdown_session,
+	.close_session			= srpt_close_session,
+	.stop_session			= srpt_stop_session,
+	.fall_back_to_erl0		= srpt_reset_nexus,
+	.sess_logged_in			= srpt_sess_logged_in,
+	.sess_get_index			= srpt_sess_get_index,
+	.sess_get_initiator_sid		= NULL,
+	.write_pending			= srpt_write_pending,
+	.write_pending_status		= srpt_write_pending_status,
+	.set_default_node_attributes	= srpt_set_default_node_attrs,
+	.get_task_tag			= srpt_get_task_tag,
+	.get_cmd_state			= srpt_get_tcm_cmd_state,
+	.queue_data_in			= srpt_queue_response,
+	.queue_status			= srpt_queue_status,
+	.queue_tm_rsp			= srpt_queue_response,
+	.get_fabric_sense_len		= srpt_get_fabric_sense_len,
+	.set_fabric_sense_len		= srpt_set_fabric_sense_len,
+	.is_state_remove		= srpt_is_state_remove,
+	/*
+	 * Setup function pointers for generic logic in
+	 * target_core_fabric_configfs.c
+	 */
+	.fabric_make_wwn		= srpt_make_tport,
+	.fabric_drop_wwn		= srpt_drop_tport,
+	.fabric_make_tpg		= srpt_make_tpg,
+	.fabric_drop_tpg		= srpt_drop_tpg,
+	.fabric_post_link		= NULL,
+	.fabric_pre_unlink		= NULL,
+	.fabric_make_np			= NULL,
+	.fabric_drop_np			= NULL,
+	.fabric_make_nodeacl		= srpt_make_nodeacl,
+	.fabric_drop_nodeacl		= srpt_drop_nodeacl,
+};
+
+/**
+ * srpt_init_module() - Kernel module initialization.
+ *
+ * Note: Since ib_register_client() registers callback functions, and since at
+ * least one of these callback functions (srpt_add_one()) calls target core
+ * functions, this driver must be registered with the target core before
+ * ib_register_client() is called.
+ */
+static int __init srpt_init_module(void)
+{
+	int ret;
+
+	ret = -EINVAL;
+	if (srp_max_req_size < MIN_MAX_REQ_SIZE) {
+		printk(KERN_ERR "invalid value %d for kernel module parameter"
+		       " srp_max_req_size -- must be at least %d.\n",
+		       srp_max_req_size, MIN_MAX_REQ_SIZE);
+		goto out;
+	}
+
+	if (srpt_srq_size < MIN_SRPT_SRQ_SIZE
+	    || srpt_srq_size > MAX_SRPT_SRQ_SIZE) {
+		printk(KERN_ERR "invalid value %d for kernel module parameter"
+		       " srpt_srq_size -- must be in the range [%d..%d].\n",
+		       srpt_srq_size, MIN_SRPT_SRQ_SIZE, MAX_SRPT_SRQ_SIZE);
+		goto out;
+	}
+
+	spin_lock_init(&srpt_dev_lock);
+	INIT_LIST_HEAD(&srpt_dev_list);
+
+	ret = -ENODEV;
+	srpt_target = target_fabric_configfs_init(THIS_MODULE, "srpt");
+	if (!srpt_target) {
+		printk(KERN_ERR "couldn't register\n");
+		goto out;
+	}
+
+	srpt_target->tf_ops = srpt_template;
+
+	/* Enable SG chaining */
+	srpt_target->tf_ops.task_sg_chaining = true;
+
+	/*
+	 * Set up default attribute lists.
+	 */
+	srpt_target->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = srpt_wwn_attrs;
+	srpt_target->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = srpt_tpg_attrs;
+	srpt_target->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = srpt_tpg_attrib_attrs;
+	srpt_target->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL;
+	srpt_target->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL;
+	srpt_target->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL;
+	srpt_target->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
+	srpt_target->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
+	srpt_target->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL;
+
+	ret = target_fabric_configfs_register(srpt_target);
+	if (ret < 0) {
+		printk(KERN_ERR "couldn't register\n");
+		goto out_free_target;
+	}
+
+	ret = ib_register_client(&srpt_client);
+	if (ret) {
+		printk(KERN_ERR "couldn't register IB client\n");
+		goto out_unregister_target;
+	}
+
+	return 0;
+
+out_unregister_target:
+	target_fabric_configfs_deregister(srpt_target);
+	srpt_target = NULL;
+out_free_target:
+	if (srpt_target)
+		target_fabric_configfs_free(srpt_target);
+out:
+	return ret;
+}
+
+static void __exit srpt_cleanup_module(void)
+{
+	ib_unregister_client(&srpt_client);
+	target_fabric_configfs_deregister(srpt_target);
+	srpt_target = NULL;
+}
+
+module_init(srpt_init_module);
+module_exit(srpt_cleanup_module);
diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.h b/drivers/infiniband/ulp/srpt/ib_srpt.h
new file mode 100644
index 0000000..b4b4bbc
--- /dev/null
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.h
@@ -0,0 +1,444 @@
+/*
+ * Copyright (c) 2006 - 2009 Mellanox Technology Inc.  All rights reserved.
+ * Copyright (C) 2009 - 2010 Bart Van Assche <bvanassche@acm.org>.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#ifndef IB_SRPT_H
+#define IB_SRPT_H
+
+#include <linux/version.h>
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/wait.h>
+
+#include <rdma/ib_verbs.h>
+#include <rdma/ib_sa.h>
+#include <rdma/ib_cm.h>
+
+#include <scsi/srp.h>
+
+#include "ib_dm_mad.h"
+
+/*
+ * The prefix the ServiceName field must start with in the device management
+ * ServiceEntries attribute pair. See also the SRP specification.
+ */
+#define SRP_SERVICE_NAME_PREFIX		"SRP.T10:"
+
+enum {
+	/*
+	 * SRP IOControllerProfile attributes for SRP target ports that have
+	 * not been defined in <scsi/srp.h>. Source: section B.7, table B.7
+	 * in the SRP specification.
+	 */
+	SRP_PROTOCOL = 0x0108,
+	SRP_PROTOCOL_VERSION = 0x0001,
+	SRP_IO_SUBCLASS = 0x609e,
+	SRP_SEND_TO_IOC = 0x01,
+	SRP_SEND_FROM_IOC = 0x02,
+	SRP_RDMA_READ_FROM_IOC = 0x08,
+	SRP_RDMA_WRITE_FROM_IOC = 0x20,
+
+	/*
+	 * srp_login_cmd.req_flags bitmasks. See also table 9 in the SRP
+	 * specification.
+	 */
+	SRP_MTCH_ACTION = 0x03, /* MULTI-CHANNEL ACTION */
+	SRP_LOSOLNT = 0x10, /* logout solicited notification */
+	SRP_CRSOLNT = 0x20, /* credit request solicited notification */
+	SRP_AESOLNT = 0x40, /* asynchronous event solicited notification */
+
+	/*
+	 * srp_cmd.sol_nt / srp_tsk_mgmt.sol_not bitmasks. See also tables
+	 * 18 and 20 in the SRP specification.
+	 */
+	SRP_SCSOLNT = 0x02, /* SCSOLNT = successful solicited notification */
+	SRP_UCSOLNT = 0x04, /* UCSOLNT = unsuccessful solicited notification */
+
+	/*
+	 * srp_rsp.sol_not / srp_t_logout.sol_not bitmasks. See also tables
+	 * 16 and 22 in the SRP specification.
+	 */
+	SRP_SOLNT = 0x01, /* SOLNT = solicited notification */
+
+	/* See also table 24 in the SRP specification. */
+	SRP_TSK_MGMT_SUCCESS = 0x00,
+	SRP_TSK_MGMT_FUNC_NOT_SUPP = 0x04,
+	SRP_TSK_MGMT_FAILED = 0x05,
+
+	/* See also table 21 in the SRP specification. */
+	SRP_CMD_SIMPLE_Q = 0x0,
+	SRP_CMD_HEAD_OF_Q = 0x1,
+	SRP_CMD_ORDERED_Q = 0x2,
+	SRP_CMD_ACA = 0x4,
+
+	SRP_LOGIN_RSP_MULTICHAN_NO_CHAN = 0x0,
+	SRP_LOGIN_RSP_MULTICHAN_TERMINATED = 0x1,
+	SRP_LOGIN_RSP_MULTICHAN_MAINTAINED = 0x2,
+
+	SRPT_DEF_SG_TABLESIZE = 128,
+	SRPT_DEF_SG_PER_WQE = 16,
+
+	MIN_SRPT_SQ_SIZE = 16,
+	DEF_SRPT_SQ_SIZE = 4096,
+	SRPT_RQ_SIZE = 128,
+	MIN_SRPT_SRQ_SIZE = 4,
+	DEFAULT_SRPT_SRQ_SIZE = 4095,
+	MAX_SRPT_SRQ_SIZE = 65535,
+	MAX_SRPT_RDMA_SIZE = 1U << 24,
+	MAX_SRPT_RSP_SIZE = 1024,
+
+	MIN_MAX_REQ_SIZE = 996,
+	DEFAULT_MAX_REQ_SIZE
+		= sizeof(struct srp_cmd)/*48*/
+		+ sizeof(struct srp_indirect_buf)/*20*/
+		+ 128 * sizeof(struct srp_direct_buf)/*16*/,
+
+	MIN_MAX_RSP_SIZE = sizeof(struct srp_rsp)/*36*/ + 4,
+	DEFAULT_MAX_RSP_SIZE = 256, /* leaves 220 bytes for sense data */
+
+	DEFAULT_MAX_RDMA_SIZE = 65536,
+};
+
+enum srpt_opcode {
+	SRPT_RECV,
+	SRPT_SEND,
+	SRPT_RDMA_MID,
+	SRPT_RDMA_ABORT,
+	SRPT_RDMA_READ_LAST,
+	SRPT_RDMA_WRITE_LAST,
+};
+
+static inline u64 encode_wr_id(u8 opcode, u32 idx)
+{
+	return ((u64)opcode << 32) | idx;
+}
+static inline enum srpt_opcode opcode_from_wr_id(u64 wr_id)
+{
+	return wr_id >> 32;
+}
+static inline u32 idx_from_wr_id(u64 wr_id)
+{
+	return (u32)wr_id;
+}
+
+struct rdma_iu {
+	u64		raddr;
+	u32		rkey;
+	struct ib_sge	*sge;
+	u32		sge_cnt;
+	int		mem_id;
+};
+
+/**
+ * enum srpt_command_state - SCSI command state managed by SRPT.
+ * @SRPT_STATE_NEW:           New command arrived and is being processed.
+ * @SRPT_STATE_NEED_DATA:     Processing a write or bidir command and waiting
+ *                            for data arrival.
+ * @SRPT_STATE_DATA_IN:       Data for the write or bidir command arrived and is
+ *                            being processed.
+ * @SRPT_STATE_CMD_RSP_SENT:  SRP_RSP for SRP_CMD has been sent.
+ * @SRPT_STATE_MGMT:          Processing a SCSI task management command.
+ * @SRPT_STATE_MGMT_RSP_SENT: SRP_RSP for SRP_TSK_MGMT has been sent.
+ * @SRPT_STATE_DONE:          Command processing finished successfully, command
+ *                            processing has been aborted or command processing
+ *                            failed.
+ */
+enum srpt_command_state {
+	SRPT_STATE_NEW		 = 0,
+	SRPT_STATE_NEED_DATA	 = 1,
+	SRPT_STATE_DATA_IN	 = 2,
+	SRPT_STATE_CMD_RSP_SENT	 = 3,
+	SRPT_STATE_MGMT		 = 4,
+	SRPT_STATE_MGMT_RSP_SENT = 5,
+	SRPT_STATE_DONE		 = 6,
+};
+
+/**
+ * struct srpt_ioctx - Shared SRPT I/O context information.
+ * @buf:   Pointer to the buffer.
+ * @dma:   DMA address of the buffer.
+ * @index: Index of the I/O context in its ioctx_ring array.
+ */
+struct srpt_ioctx {
+	void			*buf;
+	dma_addr_t		dma;
+	uint32_t		index;
+};
+
+/**
+ * struct srpt_recv_ioctx - SRPT receive I/O context.
+ * @ioctx:     See above.
+ * @wait_list: Node for insertion in srpt_rdma_ch.cmd_wait_list.
+ */
+struct srpt_recv_ioctx {
+	struct srpt_ioctx	ioctx;
+	struct list_head	wait_list;
+};
+
+/**
+ * struct srpt_send_ioctx - SRPT send I/O context.
+ * @ioctx:       See above.
+ * @ch:          Channel pointer.
+ * @free_list:   Node in srpt_rdma_ch.free_list.
+ * @n_rbuf:      Number of data buffers in the received SRP command.
+ * @rbufs:       Pointer to SRP data buffer array.
+ * @single_rbuf: SRP data buffer if the command has only a single buffer.
+ * @sg:          Pointer to sg-list associated with this I/O context.
+ * @sg_cnt:      SG-list size.
+ * @mapped_sg_count: ib_dma_map_sg() return value.
+ * @n_rdma_ius:  Number of elements in the rdma_ius array.
+ * @rdma_ius:    Array with information about the RDMA mapping.
+ * @tag:         Tag of the received SRP information unit.
+ * @spinlock:    Protects 'state'.
+ * @state:       I/O context state.
+ * @rdma_aborted: If initiating a multipart RDMA transfer failed, whether
+ * 		 the already initiated transfers have finished.
+ * @cmd:         Target core command data structure.
+ * @sense_data:  SCSI sense data.
+ */
+struct srpt_send_ioctx {
+	struct srpt_ioctx	ioctx;
+	struct srpt_rdma_ch	*ch;
+	struct kref		 kref;
+	struct rdma_iu		*rdma_ius;
+	struct srp_direct_buf	*rbufs;
+	struct srp_direct_buf	single_rbuf;
+	struct scatterlist	*sg;
+	struct list_head	free_list;
+	spinlock_t		spinlock;
+	enum srpt_command_state	state;
+	bool			rdma_aborted;
+	struct se_cmd		cmd;
+	struct completion	tx_done;
+	u64			tag;
+	int			sg_cnt;
+	int			mapped_sg_count;
+	u16			n_rdma_ius;
+	u8			n_rdma;
+	u8			n_rbuf;
+	bool			queue_status_only;
+	u8			sense_data[SCSI_SENSE_BUFFERSIZE];
+};
+
+/**
+ * enum rdma_ch_state - SRP channel state.
+ * @CH_CONNECTING:	 QP is in RTR state; waiting for RTU.
+ * @CH_LIVE:		 QP is in RTS state.
+ * @CH_DISCONNECTING:    DREQ has been received; waiting for DREP
+ *                       or DREQ has been send and waiting for DREP
+ *                       or .
+ * @CH_DRAINING:	 QP is in ERR state; waiting for last WQE event.
+ * @CH_RELEASING:	 Last WQE event has been received; releasing resources.
+ */
+enum rdma_ch_state {
+	CH_CONNECTING,
+	CH_LIVE,
+	CH_DISCONNECTING,
+	CH_DRAINING,
+	CH_RELEASING
+};
+
+/**
+ * struct srpt_rdma_ch - RDMA channel.
+ * @wait_queue:    Allows the kernel thread to wait for more work.
+ * @thread:        Kernel thread that processes the IB queues associated with
+ *                 the channel.
+ * @cm_id:         IB CM ID associated with the channel.
+ * @qp:            IB queue pair used for communicating over this channel.
+ * @cq:            IB completion queue for this channel.
+ * @rq_size:       IB receive queue size.
+ * @rsp_size	   IB response message size in bytes.
+ * @sq_wr_avail:   number of work requests available in the send queue.
+ * @sport:         pointer to the information of the HCA port used by this
+ *                 channel.
+ * @i_port_id:     128-bit initiator port identifier copied from SRP_LOGIN_REQ.
+ * @t_port_id:     128-bit target port identifier copied from SRP_LOGIN_REQ.
+ * @max_ti_iu_len: maximum target-to-initiator information unit length.
+ * @req_lim:       request limit: maximum number of requests that may be sent
+ *                 by the initiator without having received a response.
+ * @req_lim_delta: Number of credits not yet sent back to the initiator.
+ * @spinlock:      Protects free_list and state.
+ * @free_list:     Head of list with free send I/O contexts.
+ * @state:         channel state. See also enum rdma_ch_state.
+ * @ioctx_ring:    Send ring.
+ * @wc:            IB work completion array for srpt_process_completion().
+ * @list:          Node for insertion in the srpt_device.rch_list list.
+ * @cmd_wait_list: List of SCSI commands that arrived before the RTU event. This
+ *                 list contains struct srpt_ioctx elements and is protected
+ *                 against concurrent modification by the cm_id spinlock.
+ * @sess:          Session information associated with this SRP channel.
+ * @sess_name:     Session name.
+ * @release_work:  Allows scheduling of srpt_release_channel().
+ * @release_done:  Enables waiting for srpt_release_channel() completion.
+ */
+struct srpt_rdma_ch {
+	wait_queue_head_t	wait_queue;
+	struct task_struct	*thread;
+	struct ib_cm_id		*cm_id;
+	struct ib_qp		*qp;
+	struct ib_cq		*cq;
+	int			rq_size;
+	u32			rsp_size;
+	atomic_t		sq_wr_avail;
+	struct srpt_port	*sport;
+	u8			i_port_id[16];
+	u8			t_port_id[16];
+	int			max_ti_iu_len;
+	atomic_t		req_lim;
+	atomic_t		req_lim_delta;
+	spinlock_t		spinlock;
+	struct list_head	free_list;
+	enum rdma_ch_state	state;
+	struct srpt_send_ioctx	**ioctx_ring;
+	struct ib_wc		wc[16];
+	struct list_head	list;
+	struct list_head	cmd_wait_list;
+	struct se_session	*sess;
+	u8			sess_name[36];
+	struct work_struct	release_work;
+	struct completion	*release_done;
+};
+
+/**
+ * struct srpt_port_attib - Attributes for SRPT port
+ * @srp_max_rdma_size: Maximum size of SRP RDMA transfers for new connections.
+ * @srp_max_rsp_size: Maximum size of SRP response messages in bytes.
+ * @srp_sq_size: Shared receive queue (SRQ) size.
+ */
+struct srpt_port_attrib {
+	u32			srp_max_rdma_size;
+	u32			srp_max_rsp_size;
+	u32			srp_sq_size;
+};
+
+/**
+ * struct srpt_port - Information associated by SRPT with a single IB port.
+ * @sdev:      backpointer to the HCA information.
+ * @mad_agent: per-port management datagram processing information.
+ * @enabled:   Whether or not this target port is enabled.
+ * @port_guid: ASCII representation of Port GUID
+ * @port:      one-based port number.
+ * @sm_lid:    cached value of the port's sm_lid.
+ * @lid:       cached value of the port's lid.
+ * @gid:       cached value of the port's gid.
+ * @port_acl_lock spinlock for port_acl_list:
+ * @work:      work structure for refreshing the aforementioned cached values.
+ * @port_tpg_1 Target portal group = 1 data.
+ * @port_wwn:  Target core WWN data.
+ * @port_acl_list: Head of the list with all node ACLs for this port.
+ */
+struct srpt_port {
+	struct srpt_device	*sdev;
+	struct ib_mad_agent	*mad_agent;
+	bool			enabled;
+	u8			port_guid[64];
+	u8			port;
+	u16			sm_lid;
+	u16			lid;
+	union ib_gid		gid;
+	spinlock_t		port_acl_lock;
+	struct work_struct	work;
+	struct se_portal_group	port_tpg_1;
+	struct se_wwn		port_wwn;
+	struct list_head	port_acl_list;
+	struct srpt_port_attrib port_attrib;
+};
+
+/**
+ * struct srpt_device - Information associated by SRPT with a single HCA.
+ * @device:        Backpointer to the struct ib_device managed by the IB core.
+ * @pd:            IB protection domain.
+ * @mr:            L_Key (local key) with write access to all local memory.
+ * @srq:           Per-HCA SRQ (shared receive queue).
+ * @cm_id:         Connection identifier.
+ * @dev_attr:      Attributes of the InfiniBand device as obtained during the
+ *                 ib_client.add() callback.
+ * @srq_size:      SRQ size.
+ * @ioctx_ring:    Per-HCA SRQ.
+ * @rch_list:      Per-device channel list -- see also srpt_rdma_ch.list.
+ * @ch_releaseQ:   Enables waiting for removal from rch_list.
+ * @spinlock:      Protects rch_list and tpg.
+ * @port:          Information about the ports owned by this HCA.
+ * @event_handler: Per-HCA asynchronous IB event handler.
+ * @list:          Node in srpt_dev_list.
+ */
+struct srpt_device {
+	struct ib_device	*device;
+	struct ib_pd		*pd;
+	struct ib_mr		*mr;
+	struct ib_srq		*srq;
+	struct ib_cm_id		*cm_id;
+	struct ib_device_attr	dev_attr;
+	int			srq_size;
+	struct srpt_recv_ioctx	**ioctx_ring;
+	struct list_head	rch_list;
+	wait_queue_head_t	ch_releaseQ;
+	spinlock_t		spinlock;
+	struct srpt_port	port[2];
+	struct ib_event_handler	event_handler;
+	struct list_head	list;
+};
+
+/**
+ * struct srpt_node_acl - Per-initiator ACL data (managed via configfs).
+ * @i_port_id: 128-bit SRP initiator port ID.
+ * @sport:     port information.
+ * @nacl:      Target core node ACL information.
+ * @list:      Element of the per-HCA ACL list.
+ */
+struct srpt_node_acl {
+	u8			i_port_id[16];
+	struct srpt_port	*sport;
+	struct se_node_acl	nacl;
+	struct list_head	list;
+};
+
+/*
+ * SRP-releated SCSI persistent reservation definitions.
+ *
+ * See also SPC4r28, section 7.6.1 (Protocol specific parameters introduction).
+ * See also SPC4r28, section 7.6.4.5 (TransportID for initiator ports using
+ * SCSI over an RDMA interface).
+ */
+
+enum {
+	SCSI_TRANSPORTID_PROTOCOLID_SRP	= 4,
+};
+
+struct spc_rdma_transport_id {
+	uint8_t protocol_identifier;
+	uint8_t reserved[7];
+	uint8_t i_port_id[16];
+};
+
+#endif				/* IB_SRPT_H */
diff --git a/drivers/media/common/tuners/tuner-xc2028.c b/drivers/media/common/tuners/tuner-xc2028.c
index 2755599..b5ee3eb 100644
--- a/drivers/media/common/tuners/tuner-xc2028.c
+++ b/drivers/media/common/tuners/tuner-xc2028.c
@@ -24,6 +24,21 @@
 #include <linux/dvb/frontend.h>
 #include "dvb_frontend.h"
 
+/* Registers (Write-only) */
+#define XREG_INIT         0x00
+#define XREG_RF_FREQ      0x02
+#define XREG_POWER_DOWN   0x08
+
+/* Registers (Read-only) */
+#define XREG_FREQ_ERROR   0x01
+#define XREG_LOCK         0x02
+#define XREG_VERSION      0x04
+#define XREG_PRODUCT_ID   0x08
+#define XREG_HSYNC_FREQ   0x10
+#define XREG_FRAME_LINES  0x20
+#define XREG_SNR          0x40
+
+#define XREG_ADC_ENV      0x0100
 
 static int debug;
 module_param(debug, int, 0644);
@@ -885,7 +900,7 @@
 	mutex_lock(&priv->lock);
 
 	/* Sync Lock Indicator */
-	rc = xc2028_get_reg(priv, 0x0002, &frq_lock);
+	rc = xc2028_get_reg(priv, XREG_LOCK, &frq_lock);
 	if (rc < 0)
 		goto ret;
 
@@ -894,7 +909,7 @@
 		signal = 1 << 11;
 
 	/* Get SNR of the video signal */
-	rc = xc2028_get_reg(priv, 0x0040, &signal);
+	rc = xc2028_get_reg(priv, XREG_SNR, &signal);
 	if (rc < 0)
 		goto ret;
 
@@ -1019,9 +1034,9 @@
 
 	/* CMD= Set frequency */
 	if (priv->firm_version < 0x0202)
-		rc = send_seq(priv, {0x00, 0x02, 0x00, 0x00});
+		rc = send_seq(priv, {0x00, XREG_RF_FREQ, 0x00, 0x00});
 	else
-		rc = send_seq(priv, {0x80, 0x02, 0x00, 0x00});
+		rc = send_seq(priv, {0x80, XREG_RF_FREQ, 0x00, 0x00});
 	if (rc < 0)
 		goto ret;
 
@@ -1201,9 +1216,9 @@
 	mutex_lock(&priv->lock);
 
 	if (priv->firm_version < 0x0202)
-		rc = send_seq(priv, {0x00, 0x08, 0x00, 0x00});
+		rc = send_seq(priv, {0x00, XREG_POWER_DOWN, 0x00, 0x00});
 	else
-		rc = send_seq(priv, {0x80, 0x08, 0x00, 0x00});
+		rc = send_seq(priv, {0x80, XREG_POWER_DOWN, 0x00, 0x00});
 
 	priv->cur_fw.type = 0;	/* need firmware reload */
 
diff --git a/drivers/media/common/tuners/xc4000.c b/drivers/media/common/tuners/xc4000.c
index d218c1d..6839711 100644
--- a/drivers/media/common/tuners/xc4000.c
+++ b/drivers/media/common/tuners/xc4000.c
@@ -154,6 +154,8 @@
 #define XREG_SNR          0x06
 #define XREG_VERSION      0x07
 #define XREG_PRODUCT_ID   0x08
+#define XREG_SIGNAL_LEVEL 0x0A
+#define XREG_NOISE_LEVEL  0x0B
 
 /*
    Basic firmware description. This will remain with
@@ -486,6 +488,16 @@
 	return xc4000_readreg(priv, XREG_QUALITY, quality);
 }
 
+static int xc_get_signal_level(struct xc4000_priv *priv, u16 *signal)
+{
+	return xc4000_readreg(priv, XREG_SIGNAL_LEVEL, signal);
+}
+
+static int xc_get_noise_level(struct xc4000_priv *priv, u16 *noise)
+{
+	return xc4000_readreg(priv, XREG_NOISE_LEVEL, noise);
+}
+
 static u16 xc_wait_for_lock(struct xc4000_priv *priv)
 {
 	u16	lock_state = 0;
@@ -1089,6 +1101,8 @@
 	u32	hsync_freq_hz = 0;
 	u16	frame_lines;
 	u16	quality;
+	u16	signal = 0;
+	u16	noise = 0;
 	u8	hw_majorversion = 0, hw_minorversion = 0;
 	u8	fw_majorversion = 0, fw_minorversion = 0;
 
@@ -1119,6 +1133,12 @@
 
 	xc_get_quality(priv, &quality);
 	dprintk(1, "*** Quality (0:<8dB, 7:>56dB) = %d\n", quality);
+
+	xc_get_signal_level(priv, &signal);
+	dprintk(1, "*** Signal level = -%ddB (%d)\n", signal >> 8, signal);
+
+	xc_get_noise_level(priv, &noise);
+	dprintk(1, "*** Noise level = %ddB (%d)\n", noise >> 8, noise);
 }
 
 static int xc4000_set_params(struct dvb_frontend *fe)
@@ -1432,6 +1452,71 @@
 	return ret;
 }
 
+static int xc4000_get_signal(struct dvb_frontend *fe, u16 *strength)
+{
+	struct xc4000_priv *priv = fe->tuner_priv;
+	u16 value = 0;
+	int rc;
+
+	mutex_lock(&priv->lock);
+	rc = xc4000_readreg(priv, XREG_SIGNAL_LEVEL, &value);
+	mutex_unlock(&priv->lock);
+
+	if (rc < 0)
+		goto ret;
+
+	/* Informations from real testing of DVB-T and radio part,
+	   coeficient for one dB is 0xff.
+	 */
+	tuner_dbg("Signal strength: -%ddB (%05d)\n", value >> 8, value);
+
+	/* all known digital modes */
+	if ((priv->video_standard == XC4000_DTV6) ||
+	    (priv->video_standard == XC4000_DTV7) ||
+	    (priv->video_standard == XC4000_DTV7_8) ||
+	    (priv->video_standard == XC4000_DTV8))
+		goto digital;
+
+	/* Analog mode has NOISE LEVEL important, signal
+	   depends only on gain of antenna and amplifiers,
+	   but it doesn't tell anything about real quality
+	   of reception.
+	 */
+	mutex_lock(&priv->lock);
+	rc = xc4000_readreg(priv, XREG_NOISE_LEVEL, &value);
+	mutex_unlock(&priv->lock);
+
+	tuner_dbg("Noise level: %ddB (%05d)\n", value >> 8, value);
+
+	/* highest noise level: 32dB */
+	if (value >= 0x2000) {
+		value = 0;
+	} else {
+		value = ~value << 3;
+	}
+
+	goto ret;
+
+	/* Digital mode has SIGNAL LEVEL important and real
+	   noise level is stored in demodulator registers.
+	 */
+digital:
+	/* best signal: -50dB */
+	if (value <= 0x3200) {
+		value = 0xffff;
+	/* minimum: -114dB - should be 0x7200 but real zero is 0x713A */
+	} else if (value >= 0x713A) {
+		value = 0;
+	} else {
+		value = ~(value - 0x3200) << 2;
+	}
+
+ret:
+	*strength = value;
+
+	return rc;
+}
+
 static int xc4000_get_frequency(struct dvb_frontend *fe, u32 *freq)
 {
 	struct xc4000_priv *priv = fe->tuner_priv;
@@ -1559,6 +1644,7 @@
 	.set_params	   = xc4000_set_params,
 	.set_analog_params = xc4000_set_analog_params,
 	.get_frequency	   = xc4000_get_frequency,
+	.get_rf_strength   = xc4000_get_signal,
 	.get_bandwidth	   = xc4000_get_bandwidth,
 	.get_status	   = xc4000_get_status
 };
diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
index b15db4f..fbbe545 100644
--- a/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -904,8 +904,11 @@
 {
 	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 	int i;
+	u32 delsys;
 
+	delsys = c->delivery_system;
 	memset(c, 0, sizeof(struct dtv_frontend_properties));
+	c->delivery_system = delsys;
 
 	c->state = DTV_CLEAR;
 
@@ -1009,25 +1012,6 @@
 	_DTV_CMD(DTV_ISDBT_LAYERC_SEGMENT_COUNT, 1, 0),
 	_DTV_CMD(DTV_ISDBT_LAYERC_TIME_INTERLEAVING, 1, 0),
 
-	_DTV_CMD(DTV_ISDBT_PARTIAL_RECEPTION, 0, 0),
-	_DTV_CMD(DTV_ISDBT_SOUND_BROADCASTING, 0, 0),
-	_DTV_CMD(DTV_ISDBT_SB_SUBCHANNEL_ID, 0, 0),
-	_DTV_CMD(DTV_ISDBT_SB_SEGMENT_IDX, 0, 0),
-	_DTV_CMD(DTV_ISDBT_SB_SEGMENT_COUNT, 0, 0),
-	_DTV_CMD(DTV_ISDBT_LAYER_ENABLED, 0, 0),
-	_DTV_CMD(DTV_ISDBT_LAYERA_FEC, 0, 0),
-	_DTV_CMD(DTV_ISDBT_LAYERA_MODULATION, 0, 0),
-	_DTV_CMD(DTV_ISDBT_LAYERA_SEGMENT_COUNT, 0, 0),
-	_DTV_CMD(DTV_ISDBT_LAYERA_TIME_INTERLEAVING, 0, 0),
-	_DTV_CMD(DTV_ISDBT_LAYERB_FEC, 0, 0),
-	_DTV_CMD(DTV_ISDBT_LAYERB_MODULATION, 0, 0),
-	_DTV_CMD(DTV_ISDBT_LAYERB_SEGMENT_COUNT, 0, 0),
-	_DTV_CMD(DTV_ISDBT_LAYERB_TIME_INTERLEAVING, 0, 0),
-	_DTV_CMD(DTV_ISDBT_LAYERC_FEC, 0, 0),
-	_DTV_CMD(DTV_ISDBT_LAYERC_MODULATION, 0, 0),
-	_DTV_CMD(DTV_ISDBT_LAYERC_SEGMENT_COUNT, 0, 0),
-	_DTV_CMD(DTV_ISDBT_LAYERC_TIME_INTERLEAVING, 0, 0),
-
 	_DTV_CMD(DTV_ISDBS_TS_ID, 1, 0),
 	_DTV_CMD(DTV_DVBT2_PLP_ID, 1, 0),
 
@@ -1413,6 +1397,15 @@
 	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 	enum dvbv3_emulation_type type;
 
+	/*
+	 * It was reported that some old DVBv5 applications were
+	 * filling delivery_system with SYS_UNDEFINED. If this happens,
+	 * assume that the application wants to use the first supported
+	 * delivery system.
+	 */
+	if (c->delivery_system == SYS_UNDEFINED)
+	        c->delivery_system = fe->ops.delsys[0];
+
 	if (desired_system == SYS_UNDEFINED) {
 		/*
 		 * A DVBv3 call doesn't know what's the desired system.
@@ -1732,6 +1725,7 @@
 {
 	struct dvb_device *dvbdev = file->private_data;
 	struct dvb_frontend *fe = dvbdev->priv;
+	struct dvb_frontend_private *fepriv = fe->frontend_priv;
 	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 	int err = 0;
 
@@ -1798,9 +1792,14 @@
 
 		/*
 		 * Fills the cache out struct with the cache contents, plus
-		 * the data retrieved from get_frontend.
+		 * the data retrieved from get_frontend, if the frontend
+		 * is not idle. Otherwise, returns the cached content
 		 */
-		dtv_get_frontend(fe, NULL);
+		if (fepriv->state != FESTATE_IDLE) {
+			err = dtv_get_frontend(fe, NULL);
+			if (err < 0)
+				goto out;
+		}
 		for (i = 0; i < tvps->num; i++) {
 			err = dtv_property_process_get(fe, c, tvp + i, file);
 			if (err < 0)
diff --git a/drivers/media/dvb/dvb-usb/anysee.c b/drivers/media/dvb/dvb-usb/anysee.c
index d661929..1455e26 100644
--- a/drivers/media/dvb/dvb-usb/anysee.c
+++ b/drivers/media/dvb/dvb-usb/anysee.c
@@ -877,24 +877,18 @@
 	case ANYSEE_HW_508T2C: /* 20 */
 		/* E7 T2C */
 
+		if (state->fe_id)
+			break;
+
 		/* enable DVB-T/T2/C demod on IOE[5] */
 		ret = anysee_wr_reg_mask(adap->dev, REG_IOE, (1 << 5), 0x20);
 		if (ret)
 			goto error;
 
-		if (state->fe_id == 0)  {
-			/* DVB-T/T2 */
-			adap->fe_adap[state->fe_id].fe =
-				dvb_attach(cxd2820r_attach,
-				&anysee_cxd2820r_config,
-				&adap->dev->i2c_adap, NULL);
-		} else {
-			/* DVB-C */
-			adap->fe_adap[state->fe_id].fe =
-				dvb_attach(cxd2820r_attach,
-				&anysee_cxd2820r_config,
-				&adap->dev->i2c_adap, adap->fe_adap[0].fe);
-		}
+		/* attach demod */
+		adap->fe_adap[state->fe_id].fe = dvb_attach(cxd2820r_attach,
+				&anysee_cxd2820r_config, &adap->dev->i2c_adap,
+				NULL);
 
 		state->has_ci = true;
 
diff --git a/drivers/media/dvb/dvb-usb/dib0700.h b/drivers/media/dvb/dvb-usb/dib0700.h
index 9bd6d51..7de125c 100644
--- a/drivers/media/dvb/dvb-usb/dib0700.h
+++ b/drivers/media/dvb/dvb-usb/dib0700.h
@@ -48,6 +48,8 @@
 	u8 disable_streaming_master_mode;
 	u32 fw_version;
 	u32 nb_packet_buffer_size;
+	int (*read_status)(struct dvb_frontend *, fe_status_t *);
+	int (*sleep)(struct dvb_frontend* fe);
 	u8 buf[255];
 };
 
diff --git a/drivers/media/dvb/dvb-usb/dib0700_core.c b/drivers/media/dvb/dvb-usb/dib0700_core.c
index 2069994..070e82a 100644
--- a/drivers/media/dvb/dvb-usb/dib0700_core.c
+++ b/drivers/media/dvb/dvb-usb/dib0700_core.c
@@ -834,6 +834,7 @@
 
 module_usb_driver(dib0700_driver);
 
+MODULE_FIRMWARE("dvb-usb-dib0700-1.20.fw");
 MODULE_AUTHOR("Patrick Boettcher <pboettcher@dibcom.fr>");
 MODULE_DESCRIPTION("Driver for devices based on DiBcom DiB0700 - USB bridge");
 MODULE_VERSION("1.0");
diff --git a/drivers/media/dvb/dvb-usb/dib0700_devices.c b/drivers/media/dvb/dvb-usb/dib0700_devices.c
index 81ef4b4..f9e966a 100644
--- a/drivers/media/dvb/dvb-usb/dib0700_devices.c
+++ b/drivers/media/dvb/dvb-usb/dib0700_devices.c
@@ -3066,19 +3066,25 @@
 	}
 };
 
+static void stk7070pd_init(struct dvb_usb_device *dev)
+{
+	dib0700_set_gpio(dev, GPIO6, GPIO_OUT, 1);
+	msleep(10);
+	dib0700_set_gpio(dev, GPIO9, GPIO_OUT, 1);
+	dib0700_set_gpio(dev, GPIO4, GPIO_OUT, 1);
+	dib0700_set_gpio(dev, GPIO7, GPIO_OUT, 1);
+	dib0700_set_gpio(dev, GPIO10, GPIO_OUT, 0);
+
+	dib0700_ctrl_clock(dev, 72, 1);
+
+	msleep(10);
+	dib0700_set_gpio(dev, GPIO10, GPIO_OUT, 1);
+}
+
 static int stk7070pd_frontend_attach0(struct dvb_usb_adapter *adap)
 {
-	dib0700_set_gpio(adap->dev, GPIO6, GPIO_OUT, 1);
-	msleep(10);
-	dib0700_set_gpio(adap->dev, GPIO9, GPIO_OUT, 1);
-	dib0700_set_gpio(adap->dev, GPIO4, GPIO_OUT, 1);
-	dib0700_set_gpio(adap->dev, GPIO7, GPIO_OUT, 1);
-	dib0700_set_gpio(adap->dev, GPIO10, GPIO_OUT, 0);
+	stk7070pd_init(adap->dev);
 
-	dib0700_ctrl_clock(adap->dev, 72, 1);
-
-	msleep(10);
-	dib0700_set_gpio(adap->dev, GPIO10, GPIO_OUT, 1);
 	msleep(10);
 	dib0700_set_gpio(adap->dev, GPIO0, GPIO_OUT, 1);
 
@@ -3099,6 +3105,77 @@
 	return adap->fe_adap[0].fe == NULL ? -ENODEV : 0;
 }
 
+static int novatd_read_status_override(struct dvb_frontend *fe,
+		fe_status_t *stat)
+{
+	struct dvb_usb_adapter *adap = fe->dvb->priv;
+	struct dvb_usb_device *dev = adap->dev;
+	struct dib0700_state *state = dev->priv;
+	int ret;
+
+	ret = state->read_status(fe, stat);
+
+	if (!ret)
+		dib0700_set_gpio(dev, adap->id == 0 ? GPIO1 : GPIO0, GPIO_OUT,
+				!!(*stat & FE_HAS_LOCK));
+
+	return ret;
+}
+
+static int novatd_sleep_override(struct dvb_frontend* fe)
+{
+	struct dvb_usb_adapter *adap = fe->dvb->priv;
+	struct dvb_usb_device *dev = adap->dev;
+	struct dib0700_state *state = dev->priv;
+
+	/* turn off LED */
+	dib0700_set_gpio(dev, adap->id == 0 ? GPIO1 : GPIO0, GPIO_OUT, 0);
+
+	return state->sleep(fe);
+}
+
+/**
+ * novatd_frontend_attach - Nova-TD specific attach
+ *
+ * Nova-TD has GPIO0, 1 and 2 for LEDs. So do not fiddle with them except for
+ * information purposes.
+ */
+static int novatd_frontend_attach(struct dvb_usb_adapter *adap)
+{
+	struct dvb_usb_device *dev = adap->dev;
+	struct dib0700_state *st = dev->priv;
+
+	if (adap->id == 0) {
+		stk7070pd_init(dev);
+
+		/* turn the power LED on, the other two off (just in case) */
+		dib0700_set_gpio(dev, GPIO0, GPIO_OUT, 0);
+		dib0700_set_gpio(dev, GPIO1, GPIO_OUT, 0);
+		dib0700_set_gpio(dev, GPIO2, GPIO_OUT, 1);
+
+		if (dib7000p_i2c_enumeration(&dev->i2c_adap, 2, 18,
+					     stk7070pd_dib7000p_config) != 0) {
+			err("%s: dib7000p_i2c_enumeration failed.  Cannot continue\n",
+			    __func__);
+			return -ENODEV;
+		}
+	}
+
+	adap->fe_adap[0].fe = dvb_attach(dib7000p_attach, &dev->i2c_adap,
+			adap->id == 0 ? 0x80 : 0x82,
+			&stk7070pd_dib7000p_config[adap->id]);
+
+	if (adap->fe_adap[0].fe == NULL)
+		return -ENODEV;
+
+	st->read_status = adap->fe_adap[0].fe->ops.read_status;
+	adap->fe_adap[0].fe->ops.read_status = novatd_read_status_override;
+	st->sleep = adap->fe_adap[0].fe->ops.sleep;
+	adap->fe_adap[0].fe->ops.sleep = novatd_sleep_override;
+
+	return 0;
+}
+
 /* S5H1411 */
 static struct s5h1411_config pinnacle_801e_config = {
 	.output_mode   = S5H1411_PARALLEL_OUTPUT,
@@ -3870,6 +3947,57 @@
 				.pid_filter_count = 32,
 				.pid_filter       = stk70x0p_pid_filter,
 				.pid_filter_ctrl  = stk70x0p_pid_filter_ctrl,
+				.frontend_attach  = novatd_frontend_attach,
+				.tuner_attach     = dib7070p_tuner_attach,
+
+				DIB0700_DEFAULT_STREAMING_CONFIG(0x02),
+			}},
+				.size_of_priv     = sizeof(struct dib0700_adapter_state),
+			}, {
+			.num_frontends = 1,
+			.fe = {{
+				.caps = DVB_USB_ADAP_HAS_PID_FILTER | DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF,
+				.pid_filter_count = 32,
+				.pid_filter       = stk70x0p_pid_filter,
+				.pid_filter_ctrl  = stk70x0p_pid_filter_ctrl,
+				.frontend_attach  = novatd_frontend_attach,
+				.tuner_attach     = dib7070p_tuner_attach,
+
+				DIB0700_DEFAULT_STREAMING_CONFIG(0x03),
+			}},
+				.size_of_priv     = sizeof(struct dib0700_adapter_state),
+			}
+		},
+
+		.num_device_descs = 1,
+		.devices = {
+			{   "Hauppauge Nova-TD Stick (52009)",
+				{ &dib0700_usb_id_table[35], NULL },
+				{ NULL },
+			},
+		},
+
+		.rc.core = {
+			.rc_interval      = DEFAULT_RC_INTERVAL,
+			.rc_codes         = RC_MAP_DIB0700_RC5_TABLE,
+			.module_name	  = "dib0700",
+			.rc_query         = dib0700_rc_query_old_firmware,
+			.allowed_protos   = RC_TYPE_RC5 |
+					    RC_TYPE_RC6 |
+					    RC_TYPE_NEC,
+			.change_protocol = dib0700_change_protocol,
+		},
+	}, { DIB0700_DEFAULT_DEVICE_PROPERTIES,
+
+		.num_adapters = 2,
+		.adapter = {
+			{
+			.num_frontends = 1,
+			.fe = {{
+				.caps = DVB_USB_ADAP_HAS_PID_FILTER | DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF,
+				.pid_filter_count = 32,
+				.pid_filter       = stk70x0p_pid_filter,
+				.pid_filter_ctrl  = stk70x0p_pid_filter_ctrl,
 				.frontend_attach  = stk7070pd_frontend_attach0,
 				.tuner_attach     = dib7070p_tuner_attach,
 
@@ -3892,7 +4020,7 @@
 			}
 		},
 
-		.num_device_descs = 6,
+		.num_device_descs = 5,
 		.devices = {
 			{   "DiBcom STK7070PD reference design",
 				{ &dib0700_usb_id_table[17], NULL },
@@ -3902,10 +4030,6 @@
 				{ &dib0700_usb_id_table[18], NULL },
 				{ NULL },
 			},
-			{   "Hauppauge Nova-TD Stick (52009)",
-				{ &dib0700_usb_id_table[35], NULL },
-				{ NULL },
-			},
 			{   "Hauppauge Nova-TD-500 (84xxx)",
 				{ &dib0700_usb_id_table[36], NULL },
 				{ NULL },
diff --git a/drivers/media/dvb/frontends/cxd2820r_core.c b/drivers/media/dvb/frontends/cxd2820r_core.c
index 93e1b12..caae7f7 100644
--- a/drivers/media/dvb/frontends/cxd2820r_core.c
+++ b/drivers/media/dvb/frontends/cxd2820r_core.c
@@ -309,9 +309,14 @@
 
 static int cxd2820r_get_frontend(struct dvb_frontend *fe)
 {
+	struct cxd2820r_priv *priv = fe->demodulator_priv;
 	int ret;
 
 	dbg("%s: delsys=%d", __func__, fe->dtv_property_cache.delivery_system);
+
+	if (priv->delivery_system == SYS_UNDEFINED)
+		return 0;
+
 	switch (fe->dtv_property_cache.delivery_system) {
 	case SYS_DVBT:
 		ret = cxd2820r_get_frontend_t(fe);
@@ -476,10 +481,10 @@
 	dbg("%s: delsys=%d", __func__, fe->dtv_property_cache.delivery_system);
 
 	/* switch between DVB-T and DVB-T2 when tune fails */
-	if (priv->last_tune_failed && (priv->delivery_system != SYS_DVBC_ANNEX_A)) {
+	if (priv->last_tune_failed) {
 		if (priv->delivery_system == SYS_DVBT)
 			c->delivery_system = SYS_DVBT2;
-		else
+		else if (priv->delivery_system == SYS_DVBT2)
 			c->delivery_system = SYS_DVBT;
 	}
 
@@ -492,6 +497,7 @@
 	/* frontend lock wait loop count */
 	switch (priv->delivery_system) {
 	case SYS_DVBT:
+	case SYS_DVBC_ANNEX_A:
 		i = 20;
 		break;
 	case SYS_DVBT2:
diff --git a/drivers/media/dvb/frontends/ds3000.c b/drivers/media/dvb/frontends/ds3000.c
index 9387770..af65d01 100644
--- a/drivers/media/dvb/frontends/ds3000.c
+++ b/drivers/media/dvb/frontends/ds3000.c
@@ -1195,7 +1195,7 @@
 
 	for (i = 0; i < 30 ; i++) {
 		ds3000_read_status(fe, &status);
-		if (status && FE_HAS_LOCK)
+		if (status & FE_HAS_LOCK)
 			break;
 
 		msleep(10);
diff --git a/drivers/media/dvb/frontends/mb86a20s.c b/drivers/media/dvb/frontends/mb86a20s.c
index 7fa3e47..fade566 100644
--- a/drivers/media/dvb/frontends/mb86a20s.c
+++ b/drivers/media/dvb/frontends/mb86a20s.c
@@ -402,7 +402,7 @@
 		[2] = 0x8e,	/* Layer C */
 	};
 
-	if (layer > ARRAY_SIZE(reg))
+	if (layer >= ARRAY_SIZE(reg))
 		return -EINVAL;
 	rc = mb86a20s_writereg(state, 0x6d, reg[layer]);
 	if (rc < 0)
@@ -435,7 +435,7 @@
 		[2] = 0x8f,	/* Layer C */
 	};
 
-	if (layer > ARRAY_SIZE(reg))
+	if (layer >= ARRAY_SIZE(reg))
 		return -EINVAL;
 	rc = mb86a20s_writereg(state, 0x6d, reg[layer]);
 	if (rc < 0)
@@ -470,7 +470,7 @@
 		[2] = 0x90,	/* Layer C */
 	};
 
-	if (layer > ARRAY_SIZE(reg))
+	if (layer >= ARRAY_SIZE(reg))
 		return -EINVAL;
 	rc = mb86a20s_writereg(state, 0x6d, reg[layer]);
 	if (rc < 0)
@@ -494,7 +494,7 @@
 		[2] = 0x91,	/* Layer C */
 	};
 
-	if (layer > ARRAY_SIZE(reg))
+	if (layer >= ARRAY_SIZE(reg))
 		return -EINVAL;
 	rc = mb86a20s_writereg(state, 0x6d, reg[layer]);
 	if (rc < 0)
diff --git a/drivers/media/dvb/frontends/tda18271c2dd.c b/drivers/media/dvb/frontends/tda18271c2dd.c
index 86da3d8..ad7c72e 100644
--- a/drivers/media/dvb/frontends/tda18271c2dd.c
+++ b/drivers/media/dvb/frontends/tda18271c2dd.c
@@ -29,7 +29,6 @@
 #include <linux/delay.h>
 #include <linux/firmware.h>
 #include <linux/i2c.h>
-#include <linux/version.h>
 #include <asm/div64.h>
 
 #include "dvb_frontend.h"
diff --git a/drivers/media/video/as3645a.c b/drivers/media/video/as3645a.c
index ec859a5..f241702 100644
--- a/drivers/media/video/as3645a.c
+++ b/drivers/media/video/as3645a.c
@@ -29,6 +29,7 @@
 #include <linux/i2c.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
+#include <linux/slab.h>
 
 #include <media/as3645a.h>
 #include <media/v4l2-ctrls.h>
diff --git a/drivers/media/video/cx18/cx18-fileops.c b/drivers/media/video/cx18/cx18-fileops.c
index 14cb961..4bfd865 100644
--- a/drivers/media/video/cx18/cx18-fileops.c
+++ b/drivers/media/video/cx18/cx18-fileops.c
@@ -751,20 +751,10 @@
 
 	CX18_DEBUG_IOCTL("close() of %s\n", s->name);
 
-	v4l2_fh_del(fh);
-	v4l2_fh_exit(fh);
-
-	/* Easy case first: this stream was never claimed by us */
-	if (s->id != id->open_id) {
-		kfree(id);
-		return 0;
-	}
-
-	/* 'Unclaim' this stream */
-
-	/* Stop radio */
 	mutex_lock(&cx->serialize_lock);
-	if (id->type == CX18_ENC_STREAM_TYPE_RAD) {
+	/* Stop radio */
+	if (id->type == CX18_ENC_STREAM_TYPE_RAD &&
+			v4l2_fh_is_singular_file(filp)) {
 		/* Closing radio device, return to TV mode */
 		cx18_mute(cx);
 		/* Mark that the radio is no longer in use */
@@ -781,10 +771,14 @@
 		}
 		/* Done! Unmute and continue. */
 		cx18_unmute(cx);
-		cx18_release_stream(s);
-	} else {
-		cx18_stop_capture(id, 0);
 	}
+
+	v4l2_fh_del(fh);
+	v4l2_fh_exit(fh);
+
+	/* 'Unclaim' this stream */
+	if (s->id == id->open_id)
+		cx18_stop_capture(id, 0);
 	kfree(id);
 	mutex_unlock(&cx->serialize_lock);
 	return 0;
@@ -810,21 +804,15 @@
 
 	item->open_id = cx->open_id++;
 	filp->private_data = &item->fh;
+	v4l2_fh_add(&item->fh);
 
-	if (item->type == CX18_ENC_STREAM_TYPE_RAD) {
-		/* Try to claim this stream */
-		if (cx18_claim_stream(item, item->type)) {
-			/* No, it's already in use */
-			v4l2_fh_exit(&item->fh);
-			kfree(item);
-			return -EBUSY;
-		}
-
+	if (item->type == CX18_ENC_STREAM_TYPE_RAD &&
+			v4l2_fh_is_singular_file(filp)) {
 		if (!test_bit(CX18_F_I_RADIO_USER, &cx->i_flags)) {
 			if (atomic_read(&cx->ana_capturing) > 0) {
 				/* switching to radio while capture is
 				   in progress is not polite */
-				cx18_release_stream(s);
+				v4l2_fh_del(&item->fh);
 				v4l2_fh_exit(&item->fh);
 				kfree(item);
 				return -EBUSY;
@@ -842,7 +830,6 @@
 		/* Done! Unmute and continue. */
 		cx18_unmute(cx);
 	}
-	v4l2_fh_add(&item->fh);
 	return 0;
 }
 
diff --git a/drivers/media/video/cx231xx/cx231xx-cards.c b/drivers/media/video/cx231xx/cx231xx-cards.c
index 919ed77..875a7ce 100644
--- a/drivers/media/video/cx231xx/cx231xx-cards.c
+++ b/drivers/media/video/cx231xx/cx231xx-cards.c
@@ -1052,7 +1052,7 @@
 	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 	if (dev == NULL) {
 		cx231xx_err(DRIVER_NAME ": out of memory!\n");
-		clear_bit(dev->devno, &cx231xx_devused);
+		clear_bit(nr, &cx231xx_devused);
 		return -ENOMEM;
 	}
 
diff --git a/drivers/media/video/cx23885/cx23885-cards.c b/drivers/media/video/cx23885/cx23885-cards.c
index 3c01be9..19b5499 100644
--- a/drivers/media/video/cx23885/cx23885-cards.c
+++ b/drivers/media/video/cx23885/cx23885-cards.c
@@ -213,8 +213,8 @@
 		.portc		= CX23885_MPEG_DVB,
 		.tuner_type	= TUNER_XC4000,
 		.tuner_addr	= 0x61,
-		.radio_type	= TUNER_XC4000,
-		.radio_addr	= 0x61,
+		.radio_type	= UNSET,
+		.radio_addr	= ADDR_UNSET,
 		.input		= {{
 			.type	= CX23885_VMUX_TELEVISION,
 			.vmux	= CX25840_VIN2_CH1 |
diff --git a/drivers/media/video/cx23885/cx23885-dvb.c b/drivers/media/video/cx23885/cx23885-dvb.c
index af8a225..6835eb1 100644
--- a/drivers/media/video/cx23885/cx23885-dvb.c
+++ b/drivers/media/video/cx23885/cx23885-dvb.c
@@ -943,6 +943,11 @@
 
 			fe = dvb_attach(xc4000_attach, fe0->dvb.frontend,
 					&dev->i2c_bus[1].i2c_adap, &cfg);
+			if (!fe) {
+				printk(KERN_ERR "%s/2: xc4000 attach failed\n",
+				       dev->name);
+				goto frontend_detach;
+			}
 		}
 		break;
 	case CX23885_BOARD_TBS_6920:
diff --git a/drivers/media/video/cx23885/cx23885-video.c b/drivers/media/video/cx23885/cx23885-video.c
index 4bbf9bb..c654bdc 100644
--- a/drivers/media/video/cx23885/cx23885-video.c
+++ b/drivers/media/video/cx23885/cx23885-video.c
@@ -1550,7 +1550,6 @@
 	struct v4l2_control ctrl;
 	struct videobuf_dvb_frontend *vfe;
 	struct dvb_frontend *fe;
-	int err = 0;
 
 	struct analog_parameters params = {
 		.mode      = V4L2_TUNER_ANALOG_TV,
@@ -1572,8 +1571,10 @@
 		params.frequency, f->tuner, params.std);
 
 	vfe = videobuf_dvb_get_frontend(&dev->ts2.frontends, 1);
-	if (!vfe)
-		err = -EINVAL;
+	if (!vfe) {
+		mutex_unlock(&dev->lock);
+		return -EINVAL;
+	}
 
 	fe = vfe->dvb.frontend;
 
diff --git a/drivers/media/video/cx88/cx88-cards.c b/drivers/media/video/cx88/cx88-cards.c
index 62c7ad0..cbd5d11 100644
--- a/drivers/media/video/cx88/cx88-cards.c
+++ b/drivers/media/video/cx88/cx88-cards.c
@@ -1573,8 +1573,8 @@
 		.name           = "Pinnacle Hybrid PCTV",
 		.tuner_type     = TUNER_XC2028,
 		.tuner_addr     = 0x61,
-		.radio_type     = TUNER_XC2028,
-		.radio_addr     = 0x61,
+		.radio_type     = UNSET,
+		.radio_addr     = ADDR_UNSET,
 		.input          = { {
 			.type   = CX88_VMUX_TELEVISION,
 			.vmux   = 0,
@@ -1611,8 +1611,8 @@
 		.name           = "Leadtek TV2000 XP Global",
 		.tuner_type     = TUNER_XC2028,
 		.tuner_addr     = 0x61,
-		.radio_type     = TUNER_XC2028,
-		.radio_addr     = 0x61,
+		.radio_type     = UNSET,
+		.radio_addr     = ADDR_UNSET,
 		.input          = { {
 			.type   = CX88_VMUX_TELEVISION,
 			.vmux   = 0,
@@ -2115,8 +2115,8 @@
 		.name           = "Terratec Cinergy HT PCI MKII",
 		.tuner_type     = TUNER_XC2028,
 		.tuner_addr     = 0x61,
-		.radio_type     = TUNER_XC2028,
-		.radio_addr     = 0x61,
+		.radio_type     = UNSET,
+		.radio_addr     = ADDR_UNSET,
 		.input          = { {
 			.type   = CX88_VMUX_TELEVISION,
 			.vmux   = 0,
@@ -2154,9 +2154,9 @@
 	[CX88_BOARD_WINFAST_DTV1800H] = {
 		.name           = "Leadtek WinFast DTV1800 Hybrid",
 		.tuner_type     = TUNER_XC2028,
-		.radio_type     = TUNER_XC2028,
+		.radio_type     = UNSET,
 		.tuner_addr     = 0x61,
-		.radio_addr     = 0x61,
+		.radio_addr     = ADDR_UNSET,
 		/*
 		 * GPIO setting
 		 *
@@ -2195,9 +2195,9 @@
 	[CX88_BOARD_WINFAST_DTV1800H_XC4000] = {
 		.name		= "Leadtek WinFast DTV1800 H (XC4000)",
 		.tuner_type	= TUNER_XC4000,
-		.radio_type	= TUNER_XC4000,
+		.radio_type	= UNSET,
 		.tuner_addr	= 0x61,
-		.radio_addr	= 0x61,
+		.radio_addr	= ADDR_UNSET,
 		/*
 		 * GPIO setting
 		 *
@@ -2236,9 +2236,9 @@
 	[CX88_BOARD_WINFAST_DTV2000H_PLUS] = {
 		.name		= "Leadtek WinFast DTV2000 H PLUS",
 		.tuner_type	= TUNER_XC4000,
-		.radio_type	= TUNER_XC4000,
+		.radio_type	= UNSET,
 		.tuner_addr	= 0x61,
-		.radio_addr	= 0x61,
+		.radio_addr	= ADDR_UNSET,
 		/*
 		 * GPIO
 		 *   2: 1: mute audio
diff --git a/drivers/media/video/ivtv/ivtv-driver.c b/drivers/media/video/ivtv/ivtv-driver.c
index 544af91..3949b7d 100644
--- a/drivers/media/video/ivtv/ivtv-driver.c
+++ b/drivers/media/video/ivtv/ivtv-driver.c
@@ -731,9 +731,6 @@
 
 	init_kthread_work(&itv->irq_work, ivtv_irq_work_handler);
 
-	/* start counting open_id at 1 */
-	itv->open_id = 1;
-
 	/* Initial settings */
 	itv->cxhdl.port = CX2341X_PORT_MEMORY;
 	itv->cxhdl.capabilities = CX2341X_CAP_HAS_SLICED_VBI;
diff --git a/drivers/media/video/ivtv/ivtv-driver.h b/drivers/media/video/ivtv/ivtv-driver.h
index 8f9cc17..06f3d78 100644
--- a/drivers/media/video/ivtv/ivtv-driver.h
+++ b/drivers/media/video/ivtv/ivtv-driver.h
@@ -332,7 +332,7 @@
 	const char *name;		/* name of the stream */
 	int type;			/* stream type */
 
-	u32 id;
+	struct v4l2_fh *fh;		/* pointer to the streaming filehandle */
 	spinlock_t qlock; 		/* locks access to the queues */
 	unsigned long s_flags;		/* status flags, see above */
 	int dma;			/* can be PCI_DMA_TODEVICE, PCI_DMA_FROMDEVICE or PCI_DMA_NONE */
@@ -379,7 +379,6 @@
 
 struct ivtv_open_id {
 	struct v4l2_fh fh;
-	u32 open_id;                    /* unique ID for this file descriptor */
 	int type;                       /* stream type */
 	int yuv_frames;                 /* 1: started OUT_UDMA_YUV output mode */
 	struct ivtv *itv;
diff --git a/drivers/media/video/ivtv/ivtv-fileops.c b/drivers/media/video/ivtv/ivtv-fileops.c
index 38f0522..2cd6c89 100644
--- a/drivers/media/video/ivtv/ivtv-fileops.c
+++ b/drivers/media/video/ivtv/ivtv-fileops.c
@@ -50,16 +50,16 @@
 
 	if (test_and_set_bit(IVTV_F_S_CLAIMED, &s->s_flags)) {
 		/* someone already claimed this stream */
-		if (s->id == id->open_id) {
+		if (s->fh == &id->fh) {
 			/* yes, this file descriptor did. So that's OK. */
 			return 0;
 		}
-		if (s->id == -1 && (type == IVTV_DEC_STREAM_TYPE_VBI ||
+		if (s->fh == NULL && (type == IVTV_DEC_STREAM_TYPE_VBI ||
 					 type == IVTV_ENC_STREAM_TYPE_VBI)) {
 			/* VBI is handled already internally, now also assign
 			   the file descriptor to this stream for external
 			   reading of the stream. */
-			s->id = id->open_id;
+			s->fh = &id->fh;
 			IVTV_DEBUG_INFO("Start Read VBI\n");
 			return 0;
 		}
@@ -67,7 +67,7 @@
 		IVTV_DEBUG_INFO("Stream %d is busy\n", type);
 		return -EBUSY;
 	}
-	s->id = id->open_id;
+	s->fh = &id->fh;
 	if (type == IVTV_DEC_STREAM_TYPE_VBI) {
 		/* Enable reinsertion interrupt */
 		ivtv_clear_irq_mask(itv, IVTV_IRQ_DEC_VBI_RE_INSERT);
@@ -104,7 +104,7 @@
 	struct ivtv *itv = s->itv;
 	struct ivtv_stream *s_vbi;
 
-	s->id = -1;
+	s->fh = NULL;
 	if ((s->type == IVTV_DEC_STREAM_TYPE_VBI || s->type == IVTV_ENC_STREAM_TYPE_VBI) &&
 		test_bit(IVTV_F_S_INTERNAL_USE, &s->s_flags)) {
 		/* this stream is still in use internally */
@@ -136,7 +136,7 @@
 		/* was already cleared */
 		return;
 	}
-	if (s_vbi->id != -1) {
+	if (s_vbi->fh) {
 		/* VBI stream still claimed by a file descriptor */
 		return;
 	}
@@ -268,11 +268,13 @@
 		}
 
 		/* wait for more data to arrive */
+		mutex_unlock(&itv->serialize_lock);
 		prepare_to_wait(&s->waitq, &wait, TASK_INTERRUPTIBLE);
 		/* New buffers might have become available before we were added to the waitqueue */
 		if (!s->q_full.buffers)
 			schedule();
 		finish_wait(&s->waitq, &wait);
+		mutex_lock(&itv->serialize_lock);
 		if (signal_pending(current)) {
 			/* return if a signal was received */
 			IVTV_DEBUG_INFO("User stopped %s\n", s->name);
@@ -357,7 +359,7 @@
 	size_t tot_written = 0;
 	int single_frame = 0;
 
-	if (atomic_read(&itv->capturing) == 0 && s->id == -1) {
+	if (atomic_read(&itv->capturing) == 0 && s->fh == NULL) {
 		/* shouldn't happen */
 		IVTV_DEBUG_WARN("Stream %s not initialized before read\n", s->name);
 		return -EIO;
@@ -507,9 +509,7 @@
 
 	IVTV_DEBUG_HI_FILE("read %zd bytes from %s\n", count, s->name);
 
-	mutex_lock(&itv->serialize_lock);
 	rc = ivtv_start_capture(id);
-	mutex_unlock(&itv->serialize_lock);
 	if (rc)
 		return rc;
 	return ivtv_read_pos(s, buf, count, pos, filp->f_flags & O_NONBLOCK);
@@ -584,9 +584,7 @@
 	set_bit(IVTV_F_S_APPL_IO, &s->s_flags);
 
 	/* Start decoder (returns 0 if already started) */
-	mutex_lock(&itv->serialize_lock);
 	rc = ivtv_start_decoding(id, itv->speed);
-	mutex_unlock(&itv->serialize_lock);
 	if (rc) {
 		IVTV_DEBUG_WARN("Failed start decode stream %s\n", s->name);
 
@@ -627,11 +625,13 @@
 			break;
 		if (filp->f_flags & O_NONBLOCK)
 			return -EAGAIN;
+		mutex_unlock(&itv->serialize_lock);
 		prepare_to_wait(&s->waitq, &wait, TASK_INTERRUPTIBLE);
 		/* New buffers might have become free before we were added to the waitqueue */
 		if (!s->q_free.buffers)
 			schedule();
 		finish_wait(&s->waitq, &wait);
+		mutex_lock(&itv->serialize_lock);
 		if (signal_pending(current)) {
 			IVTV_DEBUG_INFO("User stopped %s\n", s->name);
 			return -EINTR;
@@ -686,12 +686,14 @@
 			if (mode == OUT_YUV)
 				ivtv_yuv_setup_stream_frame(itv);
 
+			mutex_unlock(&itv->serialize_lock);
 			prepare_to_wait(&itv->dma_waitq, &wait, TASK_INTERRUPTIBLE);
 			while (!(got_sig = signal_pending(current)) &&
 					test_bit(IVTV_F_S_DMA_PENDING, &s->s_flags)) {
 				schedule();
 			}
 			finish_wait(&itv->dma_waitq, &wait);
+			mutex_lock(&itv->serialize_lock);
 			if (got_sig) {
 				IVTV_DEBUG_INFO("User interrupted %s\n", s->name);
 				return -EINTR;
@@ -756,9 +758,7 @@
 	if (!eof && !test_bit(IVTV_F_S_STREAMING, &s->s_flags)) {
 		int rc;
 
-		mutex_lock(&itv->serialize_lock);
 		rc = ivtv_start_capture(id);
-		mutex_unlock(&itv->serialize_lock);
 		if (rc) {
 			IVTV_DEBUG_INFO("Could not start capture for %s (%d)\n",
 					s->name, rc);
@@ -808,7 +808,7 @@
 		     id->type == IVTV_ENC_STREAM_TYPE_VBI) &&
 		    test_bit(IVTV_F_S_INTERNAL_USE, &s->s_flags)) {
 			/* Also used internally, don't stop capturing */
-			s->id = -1;
+			s->fh = NULL;
 		}
 		else {
 			ivtv_stop_v4l2_encode_stream(s, gop_end);
@@ -861,20 +861,9 @@
 
 	IVTV_DEBUG_FILE("close %s\n", s->name);
 
-	v4l2_fh_del(fh);
-	v4l2_fh_exit(fh);
-
-	/* Easy case first: this stream was never claimed by us */
-	if (s->id != id->open_id) {
-		kfree(id);
-		return 0;
-	}
-
-	/* 'Unclaim' this stream */
-
 	/* Stop radio */
-	mutex_lock(&itv->serialize_lock);
-	if (id->type == IVTV_ENC_STREAM_TYPE_RAD) {
+	if (id->type == IVTV_ENC_STREAM_TYPE_RAD &&
+			v4l2_fh_is_singular_file(filp)) {
 		/* Closing radio device, return to TV mode */
 		ivtv_mute(itv);
 		/* Mark that the radio is no longer in use */
@@ -890,13 +879,25 @@
 		if (atomic_read(&itv->capturing) > 0) {
 			/* Undo video mute */
 			ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1,
-				v4l2_ctrl_g_ctrl(itv->cxhdl.video_mute) |
-				(v4l2_ctrl_g_ctrl(itv->cxhdl.video_mute_yuv) << 8));
+					v4l2_ctrl_g_ctrl(itv->cxhdl.video_mute) |
+					(v4l2_ctrl_g_ctrl(itv->cxhdl.video_mute_yuv) << 8));
 		}
 		/* Done! Unmute and continue. */
 		ivtv_unmute(itv);
-		ivtv_release_stream(s);
-	} else if (s->type >= IVTV_DEC_STREAM_TYPE_MPG) {
+	}
+
+	v4l2_fh_del(fh);
+	v4l2_fh_exit(fh);
+
+	/* Easy case first: this stream was never claimed by us */
+	if (s->fh != &id->fh) {
+		kfree(id);
+		return 0;
+	}
+
+	/* 'Unclaim' this stream */
+
+	if (s->type >= IVTV_DEC_STREAM_TYPE_MPG) {
 		struct ivtv_stream *s_vout = &itv->streams[IVTV_DEC_STREAM_TYPE_VOUT];
 
 		ivtv_stop_decoding(id, VIDEO_CMD_STOP_TO_BLACK | VIDEO_CMD_STOP_IMMEDIATELY, 0);
@@ -911,21 +912,25 @@
 		ivtv_stop_capture(id, 0);
 	}
 	kfree(id);
-	mutex_unlock(&itv->serialize_lock);
 	return 0;
 }
 
-static int ivtv_serialized_open(struct ivtv_stream *s, struct file *filp)
+int ivtv_v4l2_open(struct file *filp)
 {
-#ifdef CONFIG_VIDEO_ADV_DEBUG
 	struct video_device *vdev = video_devdata(filp);
-#endif
+	struct ivtv_stream *s = video_get_drvdata(vdev);
 	struct ivtv *itv = s->itv;
 	struct ivtv_open_id *item;
 	int res = 0;
 
 	IVTV_DEBUG_FILE("open %s\n", s->name);
 
+	if (ivtv_init_on_first_open(itv)) {
+		IVTV_ERR("Failed to initialize on device %s\n",
+			 video_device_node_name(vdev));
+		return -ENXIO;
+	}
+
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	/* Unless ivtv_fw_debug is set, error out if firmware dead. */
 	if (ivtv_fw_debug) {
@@ -966,31 +971,19 @@
 		return -ENOMEM;
 	}
 	v4l2_fh_init(&item->fh, s->vdev);
-	if (res < 0) {
-		v4l2_fh_exit(&item->fh);
-		kfree(item);
-		return res;
-	}
 	item->itv = itv;
 	item->type = s->type;
 
-	item->open_id = itv->open_id++;
 	filp->private_data = &item->fh;
+	v4l2_fh_add(&item->fh);
 
-	if (item->type == IVTV_ENC_STREAM_TYPE_RAD) {
-		/* Try to claim this stream */
-		if (ivtv_claim_stream(item, item->type)) {
-			/* No, it's already in use */
-			v4l2_fh_exit(&item->fh);
-			kfree(item);
-			return -EBUSY;
-		}
-
+	if (item->type == IVTV_ENC_STREAM_TYPE_RAD &&
+			v4l2_fh_is_singular_file(filp)) {
 		if (!test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags)) {
 			if (atomic_read(&itv->capturing) > 0) {
 				/* switching to radio while capture is
 				   in progress is not polite */
-				ivtv_release_stream(s);
+				v4l2_fh_del(&item->fh);
 				v4l2_fh_exit(&item->fh);
 				kfree(item);
 				return -EBUSY;
@@ -1022,32 +1015,9 @@
 				1080 * ((itv->yuv_info.v4l2_src_h + 31) & ~31);
 		itv->yuv_info.stream_size = 0;
 	}
-	v4l2_fh_add(&item->fh);
 	return 0;
 }
 
-int ivtv_v4l2_open(struct file *filp)
-{
-	int res;
-	struct ivtv *itv = NULL;
-	struct ivtv_stream *s = NULL;
-	struct video_device *vdev = video_devdata(filp);
-
-	s = video_get_drvdata(vdev);
-	itv = s->itv;
-
-	mutex_lock(&itv->serialize_lock);
-	if (ivtv_init_on_first_open(itv)) {
-		IVTV_ERR("Failed to initialize on device %s\n",
-			 video_device_node_name(vdev));
-		mutex_unlock(&itv->serialize_lock);
-		return -ENXIO;
-	}
-	res = ivtv_serialized_open(s, filp);
-	mutex_unlock(&itv->serialize_lock);
-	return res;
-}
-
 void ivtv_mute(struct ivtv *itv)
 {
 	if (atomic_read(&itv->capturing))
diff --git a/drivers/media/video/ivtv/ivtv-ioctl.c b/drivers/media/video/ivtv/ivtv-ioctl.c
index ecafa69..c4bc481 100644
--- a/drivers/media/video/ivtv/ivtv-ioctl.c
+++ b/drivers/media/video/ivtv/ivtv-ioctl.c
@@ -179,6 +179,7 @@
 		ivtv_vapi(itv, CX2341X_DEC_PAUSE_PLAYBACK, 1, 0);
 
 		/* Wait for any DMA to finish */
+		mutex_unlock(&itv->serialize_lock);
 		prepare_to_wait(&itv->dma_waitq, &wait, TASK_INTERRUPTIBLE);
 		while (test_bit(IVTV_F_I_DMA, &itv->i_flags)) {
 			got_sig = signal_pending(current);
@@ -188,6 +189,7 @@
 			schedule();
 		}
 		finish_wait(&itv->dma_waitq, &wait);
+		mutex_lock(&itv->serialize_lock);
 		if (got_sig)
 			return -EINTR;
 
@@ -1107,6 +1109,7 @@
 	 * happens within the first 100 lines of the top field.
 	 * Make 4 attempts to sync to the decoder before giving up.
 	 */
+	mutex_unlock(&itv->serialize_lock);
 	for (f = 0; f < 4; f++) {
 		prepare_to_wait(&itv->vsync_waitq, &wait,
 				TASK_UNINTERRUPTIBLE);
@@ -1115,6 +1118,7 @@
 		schedule_timeout(msecs_to_jiffies(25));
 	}
 	finish_wait(&itv->vsync_waitq, &wait);
+	mutex_lock(&itv->serialize_lock);
 
 	if (f == 4)
 		IVTV_WARN("Mode change failed to sync to decoder\n");
@@ -1842,8 +1846,7 @@
 	return 0;
 }
 
-static long ivtv_serialized_ioctl(struct ivtv *itv, struct file *filp,
-		unsigned int cmd, unsigned long arg)
+long ivtv_v4l2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
 	struct video_device *vfd = video_devdata(filp);
 	long ret;
@@ -1855,21 +1858,6 @@
 	return ret;
 }
 
-long ivtv_v4l2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
-{
-	struct ivtv_open_id *id = fh2id(filp->private_data);
-	struct ivtv *itv = id->itv;
-	long res;
-
-	/* DQEVENT can block, so this should not run with the serialize lock */
-	if (cmd == VIDIOC_DQEVENT)
-		return ivtv_serialized_ioctl(itv, filp, cmd, arg);
-	mutex_lock(&itv->serialize_lock);
-	res = ivtv_serialized_ioctl(itv, filp, cmd, arg);
-	mutex_unlock(&itv->serialize_lock);
-	return res;
-}
-
 static const struct v4l2_ioctl_ops ivtv_ioctl_ops = {
 	.vidioc_querycap    		    = ivtv_querycap,
 	.vidioc_s_audio     		    = ivtv_s_audio,
diff --git a/drivers/media/video/ivtv/ivtv-irq.c b/drivers/media/video/ivtv/ivtv-irq.c
index 9c29e96..1b3b957 100644
--- a/drivers/media/video/ivtv/ivtv-irq.c
+++ b/drivers/media/video/ivtv/ivtv-irq.c
@@ -288,13 +288,13 @@
 			ivtv_process_vbi_data(itv, buf, 0, s->type);
 			s->q_dma.bytesused += buf->bytesused;
 		}
-		if (s->id == -1) {
+		if (s->fh == NULL) {
 			ivtv_queue_move(s, &s->q_dma, NULL, &s->q_free, 0);
 			return;
 		}
 	}
 	ivtv_queue_move(s, &s->q_dma, NULL, &s->q_full, s->q_dma.bytesused);
-	if (s->id != -1)
+	if (s->fh)
 		wake_up(&s->waitq);
 }
 
diff --git a/drivers/media/video/ivtv/ivtv-streams.c b/drivers/media/video/ivtv/ivtv-streams.c
index e7794dc..c6e28b4 100644
--- a/drivers/media/video/ivtv/ivtv-streams.c
+++ b/drivers/media/video/ivtv/ivtv-streams.c
@@ -159,7 +159,6 @@
 		s->buffers = (itv->options.kilobytes[type] * 1024 + s->buf_size - 1) / s->buf_size;
 	spin_lock_init(&s->qlock);
 	init_waitqueue_head(&s->waitq);
-	s->id = -1;
 	s->sg_handle = IVTV_DMA_UNMAPPED;
 	ivtv_queue_init(&s->q_free);
 	ivtv_queue_init(&s->q_full);
@@ -214,6 +213,7 @@
 	s->vdev->fops = ivtv_stream_info[type].fops;
 	s->vdev->release = video_device_release;
 	s->vdev->tvnorms = V4L2_STD_ALL;
+	s->vdev->lock = &itv->serialize_lock;
 	set_bit(V4L2_FL_USE_FH_PRIO, &s->vdev->flags);
 	ivtv_set_funcs(s->vdev);
 	return 0;
diff --git a/drivers/media/video/ivtv/ivtv-yuv.c b/drivers/media/video/ivtv/ivtv-yuv.c
index dcbab6a..2ad65eb 100644
--- a/drivers/media/video/ivtv/ivtv-yuv.c
+++ b/drivers/media/video/ivtv/ivtv-yuv.c
@@ -1149,23 +1149,37 @@
 {
 	struct yuv_playback_info *yi = &itv->yuv_info;
 	struct ivtv_dma_frame dma_args;
+	int res;
 
 	ivtv_yuv_setup_stream_frame(itv);
 
 	/* We only need to supply source addresses for this */
 	dma_args.y_source = src;
 	dma_args.uv_source = src + 720 * ((yi->v4l2_src_h + 31) & ~31);
-	return ivtv_yuv_udma_frame(itv, &dma_args);
+	/* Wait for frame DMA. Note that serialize_lock is locked,
+	   so to allow other processes to access the driver while
+	   we are waiting unlock first and later lock again. */
+	mutex_unlock(&itv->serialize_lock);
+	res = ivtv_yuv_udma_frame(itv, &dma_args);
+	mutex_lock(&itv->serialize_lock);
+	return res;
 }
 
 /* IVTV_IOC_DMA_FRAME ioctl handler */
 int ivtv_yuv_prep_frame(struct ivtv *itv, struct ivtv_dma_frame *args)
 {
-/*	IVTV_DEBUG_INFO("yuv_prep_frame\n"); */
+	int res;
 
+/*	IVTV_DEBUG_INFO("yuv_prep_frame\n"); */
 	ivtv_yuv_next_free(itv);
 	ivtv_yuv_setup_frame(itv, args);
-	return ivtv_yuv_udma_frame(itv, args);
+	/* Wait for frame DMA. Note that serialize_lock is locked,
+	   so to allow other processes to access the driver while
+	   we are waiting unlock first and later lock again. */
+	mutex_unlock(&itv->serialize_lock);
+	res = ivtv_yuv_udma_frame(itv, args);
+	mutex_lock(&itv->serialize_lock);
+	return res;
 }
 
 void ivtv_yuv_close(struct ivtv *itv)
@@ -1174,7 +1188,9 @@
 	int h_filter, v_filter_1, v_filter_2;
 
 	IVTV_DEBUG_YUV("ivtv_yuv_close\n");
+	mutex_unlock(&itv->serialize_lock);
 	ivtv_waitq(&itv->vsync_waitq);
+	mutex_lock(&itv->serialize_lock);
 
 	yi->running = 0;
 	atomic_set(&yi->next_dma_frame, -1);
diff --git a/drivers/media/video/mx3_camera.c b/drivers/media/video/mx3_camera.c
index 0cb461d..7452277 100644
--- a/drivers/media/video/mx3_camera.c
+++ b/drivers/media/video/mx3_camera.c
@@ -287,7 +287,7 @@
 		sg_dma_len(sg)		= new_size;
 
 		txd = ichan->dma_chan.device->device_prep_slave_sg(
-			&ichan->dma_chan, sg, 1, DMA_FROM_DEVICE,
+			&ichan->dma_chan, sg, 1, DMA_DEV_TO_MEM,
 			DMA_PREP_INTERRUPT);
 		if (!txd)
 			goto error;
diff --git a/drivers/media/video/omap/omap_vout.c b/drivers/media/video/omap/omap_vout.c
index a277f95..1fb7d5b 100644
--- a/drivers/media/video/omap/omap_vout.c
+++ b/drivers/media/video/omap/omap_vout.c
@@ -1042,7 +1042,8 @@
 	strlcpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
 	strlcpy(cap->card, vout->vfd->name, sizeof(cap->card));
 	cap->bus_info[0] = '\0';
-	cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT;
+	cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT |
+		V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
 
 	return 0;
 }
@@ -1825,7 +1826,9 @@
 	ovid = &vout->vid_info;
 	ovl = ovid->overlays[0];
 
-	a->flags = 0x0;
+	/* The video overlay must stay within the framebuffer and can't be
+	   positioned independently. */
+	a->flags = V4L2_FBUF_FLAG_OVERLAY;
 	a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
 		| V4L2_FBUF_CAP_SRC_CHROMAKEY;
 
diff --git a/drivers/media/video/pwc/pwc-ctrl.c b/drivers/media/video/pwc/pwc-ctrl.c
index 905d41d..1f506fd 100644
--- a/drivers/media/video/pwc/pwc-ctrl.c
+++ b/drivers/media/video/pwc/pwc-ctrl.c
@@ -104,47 +104,16 @@
 
 /****************************************************************************/
 
-static int _send_control_msg(struct pwc_device *pdev,
-	u8 request, u16 value, int index, void *buf, int buflen)
-{
-	int rc;
-	void *kbuf = NULL;
-
-	if (buflen) {
-		kbuf = kmemdup(buf, buflen, GFP_KERNEL); /* not allowed on stack */
-		if (kbuf == NULL)
-			return -ENOMEM;
-	}
-
-	rc = usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
-		request,
-		USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
-		value,
-		index,
-		kbuf, buflen, USB_CTRL_SET_TIMEOUT);
-
-	kfree(kbuf);
-	return rc;
-}
-
 static int recv_control_msg(struct pwc_device *pdev,
-	u8 request, u16 value, void *buf, int buflen)
+	u8 request, u16 value, int recv_count)
 {
 	int rc;
-	void *kbuf = kmalloc(buflen, GFP_KERNEL); /* not allowed on stack */
-
-	if (kbuf == NULL)
-		return -ENOMEM;
 
 	rc = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
 		request,
 		USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
-		value,
-		pdev->vcinterface,
-		kbuf, buflen, USB_CTRL_GET_TIMEOUT);
-	memcpy(buf, kbuf, buflen);
-	kfree(kbuf);
-
+		value, pdev->vcinterface,
+		pdev->ctrl_buf, recv_count, USB_CTRL_GET_TIMEOUT);
 	if (rc < 0)
 		PWC_ERROR("recv_control_msg error %d req %02x val %04x\n",
 			  rc, request, value);
@@ -152,27 +121,39 @@
 }
 
 static inline int send_video_command(struct pwc_device *pdev,
-	int index, void *buf, int buflen)
+	int index, const unsigned char *buf, int buflen)
 {
-	return _send_control_msg(pdev,
-		SET_EP_STREAM_CTL,
-		VIDEO_OUTPUT_CONTROL_FORMATTER,
-		index,
-		buf, buflen);
+	int rc;
+
+	memcpy(pdev->ctrl_buf, buf, buflen);
+
+	rc = usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
+			SET_EP_STREAM_CTL,
+			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+			VIDEO_OUTPUT_CONTROL_FORMATTER, index,
+			pdev->ctrl_buf, buflen, USB_CTRL_SET_TIMEOUT);
+	if (rc >= 0)
+		memcpy(pdev->cmd_buf, buf, buflen);
+	else
+		PWC_ERROR("send_video_command error %d\n", rc);
+
+	return rc;
 }
 
 int send_control_msg(struct pwc_device *pdev,
 	u8 request, u16 value, void *buf, int buflen)
 {
-	return _send_control_msg(pdev,
-		request, value, pdev->vcinterface, buf, buflen);
+	return usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
+			request,
+			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+			value, pdev->vcinterface,
+			buf, buflen, USB_CTRL_SET_TIMEOUT);
 }
 
-static int set_video_mode_Nala(struct pwc_device *pdev, int size, int frames,
-			       int *compression)
+static int set_video_mode_Nala(struct pwc_device *pdev, int size, int pixfmt,
+			       int frames, int *compression, int send_to_cam)
 {
-	unsigned char buf[3];
-	int ret, fps;
+	int fps, ret = 0;
 	struct Nala_table_entry *pEntry;
 	int frames2frames[31] =
 	{ /* closest match of framerate */
@@ -194,30 +175,29 @@
 	  7              /* 30    */
 	};
 
-	if (size < 0 || size > PSZ_CIF || frames < 4 || frames > 25)
+	if (size < 0 || size > PSZ_CIF)
 		return -EINVAL;
+	if (frames < 4)
+		frames = 4;
+	else if (frames > 25)
+		frames = 25;
 	frames = frames2frames[frames];
 	fps = frames2table[frames];
 	pEntry = &Nala_table[size][fps];
 	if (pEntry->alternate == 0)
 		return -EINVAL;
 
-	memcpy(buf, pEntry->mode, 3);
-	ret = send_video_command(pdev, pdev->vendpoint, buf, 3);
-	if (ret < 0) {
-		PWC_DEBUG_MODULE("Failed to send video command... %d\n", ret);
+	if (send_to_cam)
+		ret = send_video_command(pdev, pdev->vendpoint,
+					 pEntry->mode, 3);
+	if (ret < 0)
 		return ret;
-	}
-	if (pEntry->compressed && pdev->pixfmt == V4L2_PIX_FMT_YUV420) {
-		ret = pwc_dec1_init(pdev, pdev->type, pdev->release, buf);
-		if (ret < 0)
-			return ret;
-	}
 
-	pdev->cmd_len = 3;
-	memcpy(pdev->cmd_buf, buf, 3);
+	if (pEntry->compressed && pixfmt == V4L2_PIX_FMT_YUV420)
+		pwc_dec1_init(pdev, pEntry->mode);
 
 	/* Set various parameters */
+	pdev->pixfmt = pixfmt;
 	pdev->vframes = frames;
 	pdev->valternate = pEntry->alternate;
 	pdev->width  = pwc_image_sizes[size][0];
@@ -243,18 +223,20 @@
 }
 
 
-static int set_video_mode_Timon(struct pwc_device *pdev, int size, int frames,
-	int *compression)
+static int set_video_mode_Timon(struct pwc_device *pdev, int size, int pixfmt,
+				int frames, int *compression, int send_to_cam)
 {
-	unsigned char buf[13];
 	const struct Timon_table_entry *pChoose;
-	int ret, fps;
+	int fps, ret = 0;
 
-	if (size >= PSZ_MAX || frames < 5 || frames > 30 ||
-	    *compression < 0 || *compression > 3)
+	if (size >= PSZ_MAX || *compression < 0 || *compression > 3)
 		return -EINVAL;
-	if (size == PSZ_VGA && frames > 15)
-		return -EINVAL;
+	if (frames < 5)
+		frames = 5;
+	else if (size == PSZ_VGA && frames > 15)
+		frames = 15;
+	else if (frames > 30)
+		frames = 30;
 	fps = (frames / 5) - 1;
 
 	/* Find a supported framerate with progressively higher compression */
@@ -268,22 +250,18 @@
 	if (pChoose == NULL || pChoose->alternate == 0)
 		return -ENOENT; /* Not supported. */
 
-	memcpy(buf, pChoose->mode, 13);
-	ret = send_video_command(pdev, pdev->vendpoint, buf, 13);
+	if (send_to_cam)
+		ret = send_video_command(pdev, pdev->vendpoint,
+					 pChoose->mode, 13);
 	if (ret < 0)
 		return ret;
 
-	if (pChoose->bandlength > 0 && pdev->pixfmt == V4L2_PIX_FMT_YUV420) {
-		ret = pwc_dec23_init(pdev, pdev->type, buf);
-		if (ret < 0)
-			return ret;
-	}
-
-	pdev->cmd_len = 13;
-	memcpy(pdev->cmd_buf, buf, 13);
+	if (pChoose->bandlength > 0 && pixfmt == V4L2_PIX_FMT_YUV420)
+		pwc_dec23_init(pdev, pChoose->mode);
 
 	/* Set various parameters */
-	pdev->vframes = frames;
+	pdev->pixfmt = pixfmt;
+	pdev->vframes = (fps + 1) * 5;
 	pdev->valternate = pChoose->alternate;
 	pdev->width  = pwc_image_sizes[size][0];
 	pdev->height = pwc_image_sizes[size][1];
@@ -296,18 +274,20 @@
 }
 
 
-static int set_video_mode_Kiara(struct pwc_device *pdev, int size, int frames,
-	int *compression)
+static int set_video_mode_Kiara(struct pwc_device *pdev, int size, int pixfmt,
+				int frames, int *compression, int send_to_cam)
 {
 	const struct Kiara_table_entry *pChoose = NULL;
-	int fps, ret;
-	unsigned char buf[12];
+	int fps, ret = 0;
 
-	if (size >= PSZ_MAX || frames < 5 || frames > 30 ||
-	    *compression < 0 || *compression > 3)
+	if (size >= PSZ_MAX || *compression < 0 || *compression > 3)
 		return -EINVAL;
-	if (size == PSZ_VGA && frames > 15)
-		return -EINVAL;
+	if (frames < 5)
+		frames = 5;
+	else if (size == PSZ_VGA && frames > 15)
+		frames = 15;
+	else if (frames > 30)
+		frames = 30;
 	fps = (frames / 5) - 1;
 
 	/* Find a supported framerate with progressively higher compression */
@@ -320,26 +300,18 @@
 	if (pChoose == NULL || pChoose->alternate == 0)
 		return -ENOENT; /* Not supported. */
 
-	PWC_TRACE("Using alternate setting %d.\n", pChoose->alternate);
-
-	/* usb_control_msg won't take staticly allocated arrays as argument?? */
-	memcpy(buf, pChoose->mode, 12);
-
 	/* Firmware bug: video endpoint is 5, but commands are sent to endpoint 4 */
-	ret = send_video_command(pdev, 4 /* pdev->vendpoint */, buf, 12);
+	if (send_to_cam)
+		ret = send_video_command(pdev, 4, pChoose->mode, 12);
 	if (ret < 0)
 		return ret;
 
-	if (pChoose->bandlength > 0 && pdev->pixfmt == V4L2_PIX_FMT_YUV420) {
-		ret = pwc_dec23_init(pdev, pdev->type, buf);
-		if (ret < 0)
-			return ret;
-	}
+	if (pChoose->bandlength > 0 && pixfmt == V4L2_PIX_FMT_YUV420)
+		pwc_dec23_init(pdev, pChoose->mode);
 
-	pdev->cmd_len = 12;
-	memcpy(pdev->cmd_buf, buf, 12);
 	/* All set and go */
-	pdev->vframes = frames;
+	pdev->pixfmt = pixfmt;
+	pdev->vframes = (fps + 1) * 5;
 	pdev->valternate = pChoose->alternate;
 	pdev->width  = pwc_image_sizes[size][0];
 	pdev->height = pwc_image_sizes[size][1];
@@ -354,22 +326,24 @@
 }
 
 int pwc_set_video_mode(struct pwc_device *pdev, int width, int height,
-	int frames, int *compression)
+	int pixfmt, int frames, int *compression, int send_to_cam)
 {
 	int ret, size;
 
-	PWC_DEBUG_FLOW("set_video_mode(%dx%d @ %d, pixfmt %08x).\n", width, height, frames, pdev->pixfmt);
+	PWC_DEBUG_FLOW("set_video_mode(%dx%d @ %d, pixfmt %08x).\n",
+		       width, height, frames, pixfmt);
 	size = pwc_get_size(pdev, width, height);
 	PWC_TRACE("decode_size = %d.\n", size);
 
 	if (DEVICE_USE_CODEC1(pdev->type)) {
-		ret = set_video_mode_Nala(pdev, size, frames, compression);
-
+		ret = set_video_mode_Nala(pdev, size, pixfmt, frames,
+					  compression, send_to_cam);
 	} else if (DEVICE_USE_CODEC3(pdev->type)) {
-		ret = set_video_mode_Kiara(pdev, size, frames, compression);
-
+		ret = set_video_mode_Kiara(pdev, size, pixfmt, frames,
+					   compression, send_to_cam);
 	} else {
-		ret = set_video_mode_Timon(pdev, size, frames, compression);
+		ret = set_video_mode_Timon(pdev, size, pixfmt, frames,
+					   compression, send_to_cam);
 	}
 	if (ret < 0) {
 		PWC_ERROR("Failed to set video mode %s@%d fps; return code = %d\n", size2name[size], frames, ret);
@@ -436,13 +410,12 @@
 int pwc_get_u8_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *data)
 {
 	int ret;
-	u8 buf;
 
-	ret = recv_control_msg(pdev, request, value, &buf, sizeof(buf));
+	ret = recv_control_msg(pdev, request, value, 1);
 	if (ret < 0)
 		return ret;
 
-	*data = buf;
+	*data = pdev->ctrl_buf[0];
 	return 0;
 }
 
@@ -450,7 +423,8 @@
 {
 	int ret;
 
-	ret = send_control_msg(pdev, request, value, &data, sizeof(data));
+	pdev->ctrl_buf[0] = data;
+	ret = send_control_msg(pdev, request, value, pdev->ctrl_buf, 1);
 	if (ret < 0)
 		return ret;
 
@@ -460,37 +434,34 @@
 int pwc_get_s8_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *data)
 {
 	int ret;
-	s8 buf;
 
-	ret = recv_control_msg(pdev, request, value, &buf, sizeof(buf));
+	ret = recv_control_msg(pdev, request, value, 1);
 	if (ret < 0)
 		return ret;
 
-	*data = buf;
+	*data = ((s8 *)pdev->ctrl_buf)[0];
 	return 0;
 }
 
 int pwc_get_u16_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *data)
 {
 	int ret;
-	u8 buf[2];
 
-	ret = recv_control_msg(pdev, request, value, buf, sizeof(buf));
+	ret = recv_control_msg(pdev, request, value, 2);
 	if (ret < 0)
 		return ret;
 
-	*data = (buf[1] << 8) | buf[0];
+	*data = (pdev->ctrl_buf[1] << 8) | pdev->ctrl_buf[0];
 	return 0;
 }
 
 int pwc_set_u16_ctrl(struct pwc_device *pdev, u8 request, u16 value, u16 data)
 {
 	int ret;
-	u8 buf[2];
 
-	buf[0] = data & 0xff;
-	buf[1] = data >> 8;
-	ret = send_control_msg(pdev, request, value, buf, sizeof(buf));
+	pdev->ctrl_buf[0] = data & 0xff;
+	pdev->ctrl_buf[1] = data >> 8;
+	ret = send_control_msg(pdev, request, value, pdev->ctrl_buf, 2);
 	if (ret < 0)
 		return ret;
 
@@ -511,7 +482,6 @@
 /* POWER */
 void pwc_camera_power(struct pwc_device *pdev, int power)
 {
-	char buf;
 	int r;
 
 	if (!pdev->power_save)
@@ -521,13 +491,11 @@
 		return;	/* Not supported by Nala or Timon < release 6 */
 
 	if (power)
-		buf = 0x00; /* active */
+		pdev->ctrl_buf[0] = 0x00; /* active */
 	else
-		buf = 0xFF; /* power save */
-	r = send_control_msg(pdev,
-		SET_STATUS_CTL, SET_POWER_SAVE_MODE_FORMATTER,
-		&buf, sizeof(buf));
-
+		pdev->ctrl_buf[0] = 0xFF; /* power save */
+	r = send_control_msg(pdev, SET_STATUS_CTL,
+		SET_POWER_SAVE_MODE_FORMATTER, pdev->ctrl_buf, 1);
 	if (r < 0)
 		PWC_ERROR("Failed to power %s camera (%d)\n",
 			  power ? "on" : "off", r);
@@ -535,7 +503,6 @@
 
 int pwc_set_leds(struct pwc_device *pdev, int on_value, int off_value)
 {
-	unsigned char buf[2];
 	int r;
 
 	if (pdev->type < 730)
@@ -551,11 +518,11 @@
 	if (off_value > 0xff)
 		off_value = 0xff;
 
-	buf[0] = on_value;
-	buf[1] = off_value;
+	pdev->ctrl_buf[0] = on_value;
+	pdev->ctrl_buf[1] = off_value;
 
 	r = send_control_msg(pdev,
-		SET_STATUS_CTL, LED_FORMATTER, &buf, sizeof(buf));
+		SET_STATUS_CTL, LED_FORMATTER, pdev->ctrl_buf, 2);
 	if (r < 0)
 		PWC_ERROR("Failed to set LED on/off time (%d)\n", r);
 
@@ -565,7 +532,6 @@
 #ifdef CONFIG_USB_PWC_DEBUG
 int pwc_get_cmos_sensor(struct pwc_device *pdev, int *sensor)
 {
-	unsigned char buf;
 	int ret = -1, request;
 
 	if (pdev->type < 675)
@@ -575,14 +541,13 @@
 	else
 		request = SENSOR_TYPE_FORMATTER2;
 
-	ret = recv_control_msg(pdev,
-		GET_STATUS_CTL, request, &buf, sizeof(buf));
+	ret = recv_control_msg(pdev, GET_STATUS_CTL, request, 1);
 	if (ret < 0)
 		return ret;
 	if (pdev->type < 675)
-		*sensor = buf | 0x100;
+		*sensor = pdev->ctrl_buf[0] | 0x100;
 	else
-		*sensor = buf;
+		*sensor = pdev->ctrl_buf[0];
 	return 0;
 }
 #endif
diff --git a/drivers/media/video/pwc/pwc-dec1.c b/drivers/media/video/pwc/pwc-dec1.c
index be0e02c..e899036 100644
--- a/drivers/media/video/pwc/pwc-dec1.c
+++ b/drivers/media/video/pwc/pwc-dec1.c
@@ -22,19 +22,11 @@
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
-#include "pwc-dec1.h"
+#include "pwc.h"
 
-int pwc_dec1_init(struct pwc_device *pwc, int type, int release, void *buffer)
+void pwc_dec1_init(struct pwc_device *pdev, const unsigned char *cmd)
 {
-	struct pwc_dec1_private *pdec;
+	struct pwc_dec1_private *pdec = &pdev->dec1;
 
-	if (pwc->decompress_data == NULL) {
-		pdec = kmalloc(sizeof(struct pwc_dec1_private), GFP_KERNEL);
-		if (pdec == NULL)
-			return -ENOMEM;
-		pwc->decompress_data = pdec;
-	}
-	pdec = pwc->decompress_data;
-
-	return 0;
+	pdec->version = pdev->release;
 }
diff --git a/drivers/media/video/pwc/pwc-dec1.h b/drivers/media/video/pwc/pwc-dec1.h
index a57d860..c565ef8 100644
--- a/drivers/media/video/pwc/pwc-dec1.h
+++ b/drivers/media/video/pwc/pwc-dec1.h
@@ -25,13 +25,15 @@
 #ifndef PWC_DEC1_H
 #define PWC_DEC1_H
 
-#include "pwc.h"
+#include <linux/mutex.h>
+
+struct pwc_device;
 
 struct pwc_dec1_private
 {
 	int version;
 };
 
-int pwc_dec1_init(struct pwc_device *pwc, int type, int release, void *buffer);
+void pwc_dec1_init(struct pwc_device *pdev, const unsigned char *cmd);
 
 #endif
diff --git a/drivers/media/video/pwc/pwc-dec23.c b/drivers/media/video/pwc/pwc-dec23.c
index 2c67091..3792fed 100644
--- a/drivers/media/video/pwc/pwc-dec23.c
+++ b/drivers/media/video/pwc/pwc-dec23.c
@@ -294,22 +294,17 @@
 
 
 /* If the type or the command change, we rebuild the lookup table */
-int pwc_dec23_init(struct pwc_device *pwc, int type, unsigned char *cmd)
+void pwc_dec23_init(struct pwc_device *pdev, const unsigned char *cmd)
 {
 	int flags, version, shift, i;
-	struct pwc_dec23_private *pdec;
-
-	if (pwc->decompress_data == NULL) {
-		pdec = kmalloc(sizeof(struct pwc_dec23_private), GFP_KERNEL);
-		if (pdec == NULL)
-			return -ENOMEM;
-		pwc->decompress_data = pdec;
-	}
-	pdec = pwc->decompress_data;
+	struct pwc_dec23_private *pdec = &pdev->dec23;
 
 	mutex_init(&pdec->lock);
 
-	if (DEVICE_USE_CODEC3(type)) {
+	if (pdec->last_cmd_valid && pdec->last_cmd == cmd[2])
+		return;
+
+	if (DEVICE_USE_CODEC3(pdev->type)) {
 		flags = cmd[2] & 0x18;
 		if (flags == 8)
 			pdec->nbits = 7;	/* More bits, mean more bits to encode the stream, but better quality */
@@ -356,7 +351,8 @@
 		pwc_crop_table[MAX_OUTER_CROP_VALUE+256+i] = 255;
 #endif
 
-	return 0;
+	pdec->last_cmd = cmd[2];
+	pdec->last_cmd_valid = 1;
 }
 
 /*
@@ -659,12 +655,12 @@
  * src: raw data
  * dst: image output
  */
-void pwc_dec23_decompress(const struct pwc_device *pwc,
+void pwc_dec23_decompress(struct pwc_device *pdev,
 			  const void *src,
 			  void *dst)
 {
 	int bandlines_left, bytes_per_block;
-	struct pwc_dec23_private *pdec = pwc->decompress_data;
+	struct pwc_dec23_private *pdec = &pdev->dec23;
 
 	/* YUV420P image format */
 	unsigned char *pout_planar_y;
@@ -674,23 +670,22 @@
 
 	mutex_lock(&pdec->lock);
 
-	bandlines_left = pwc->height / 4;
-	bytes_per_block = pwc->width * 4;
-	plane_size = pwc->height * pwc->width;
+	bandlines_left = pdev->height / 4;
+	bytes_per_block = pdev->width * 4;
+	plane_size = pdev->height * pdev->width;
 
 	pout_planar_y = dst;
 	pout_planar_u = dst + plane_size;
 	pout_planar_v = dst + plane_size + plane_size / 4;
 
 	while (bandlines_left--) {
-		DecompressBand23(pwc->decompress_data,
-				 src,
+		DecompressBand23(pdec, src,
 				 pout_planar_y, pout_planar_u, pout_planar_v,
-				 pwc->width, pwc->width);
-		src += pwc->vbandlength;
+				 pdev->width, pdev->width);
+		src += pdev->vbandlength;
 		pout_planar_y += bytes_per_block;
-		pout_planar_u += pwc->width;
-		pout_planar_v += pwc->width;
+		pout_planar_u += pdev->width;
+		pout_planar_v += pdev->width;
 	}
 	mutex_unlock(&pdec->lock);
 }
diff --git a/drivers/media/video/pwc/pwc-dec23.h b/drivers/media/video/pwc/pwc-dec23.h
index d64a3c2..c655b1c 100644
--- a/drivers/media/video/pwc/pwc-dec23.h
+++ b/drivers/media/video/pwc/pwc-dec23.h
@@ -25,17 +25,20 @@
 #ifndef PWC_DEC23_H
 #define PWC_DEC23_H
 
-#include "pwc.h"
+struct pwc_device;
 
 struct pwc_dec23_private
 {
 	struct mutex lock;
 
+	unsigned char last_cmd, last_cmd_valid;
+
   unsigned int scalebits;
   unsigned int nbitsmask, nbits; /* Number of bits of a color in the compressed stream */
 
   unsigned int reservoir;
   unsigned int nbits_in_reservoir;
+
   const unsigned char *stream;
   int temp_colors[16];
 
@@ -51,8 +54,8 @@
 
 };
 
-int pwc_dec23_init(struct pwc_device *pwc, int type, unsigned char *cmd);
-void pwc_dec23_decompress(const struct pwc_device *pwc,
+void pwc_dec23_init(struct pwc_device *pdev, const unsigned char *cmd);
+void pwc_dec23_decompress(struct pwc_device *pdev,
 			  const void *src,
 			  void *dst);
 #endif
diff --git a/drivers/media/video/pwc/pwc-if.c b/drivers/media/video/pwc/pwc-if.c
index 943d37a..122fbd0 100644
--- a/drivers/media/video/pwc/pwc-if.c
+++ b/drivers/media/video/pwc/pwc-if.c
@@ -128,18 +128,11 @@
 #define MAX_DEV_HINTS	20
 #define MAX_ISOC_ERRORS	20
 
-static int default_fps = 10;
 #ifdef CONFIG_USB_PWC_DEBUG
 	int pwc_trace = PWC_DEBUG_LEVEL;
 #endif
 static int power_save = -1;
-static int led_on = 100, led_off; /* defaults to LED that is on while in use */
-static struct {
-	int type;
-	char serial_number[30];
-	int device_node;
-	struct pwc_device *pdev;
-} device_hint[MAX_DEV_HINTS];
+static int leds[2] = { 100, 0 };
 
 /***/
 
@@ -386,8 +379,8 @@
 retry:
 	/* We first try with low compression and then retry with a higher
 	   compression setting if there is not enough bandwidth. */
-	ret = pwc_set_video_mode(pdev, pdev->width, pdev->height,
-				 pdev->vframes, &compression);
+	ret = pwc_set_video_mode(pdev, pdev->width, pdev->height, pdev->pixfmt,
+				 pdev->vframes, &compression, 1);
 
 	/* Get the current alternate interface, adjust packet size */
 	intf = usb_ifnum_to_if(udev, 0);
@@ -597,23 +590,9 @@
 static void pwc_video_release(struct v4l2_device *v)
 {
 	struct pwc_device *pdev = container_of(v, struct pwc_device, v4l2_dev);
-	int hint;
-
-	/* search device_hint[] table if we occupy a slot, by any chance */
-	for (hint = 0; hint < MAX_DEV_HINTS; hint++)
-		if (device_hint[hint].pdev == pdev)
-			device_hint[hint].pdev = NULL;
-
-	/* Free intermediate decompression buffer & tables */
-	if (pdev->decompress_data != NULL) {
-		PWC_DEBUG_MEMORY("Freeing decompression buffer at %p.\n",
-				 pdev->decompress_data);
-		kfree(pdev->decompress_data);
-		pdev->decompress_data = NULL;
-	}
 
 	v4l2_ctrl_handler_free(&pdev->ctrl_handler);
-
+	kfree(pdev->ctrl_buf);
 	kfree(pdev);
 }
 
@@ -758,7 +737,7 @@
 
 	/* Turn on camera and set LEDS on */
 	pwc_camera_power(pdev, 1);
-	pwc_set_leds(pdev, led_on, led_off);
+	pwc_set_leds(pdev, leds[0], leds[1]);
 
 	r = pwc_isoc_init(pdev);
 	if (r) {
@@ -813,10 +792,9 @@
 	struct usb_device *udev = interface_to_usbdev(intf);
 	struct pwc_device *pdev = NULL;
 	int vendor_id, product_id, type_id;
-	int hint, rc;
+	int rc;
 	int features = 0;
 	int compression = 0;
-	int video_nr = -1; /* default: use next available device */
 	int my_power_save = power_save;
 	char serial_number[30], *name;
 
@@ -1076,7 +1054,6 @@
 		return -ENOMEM;
 	}
 	pdev->type = type_id;
-	pdev->vframes = default_fps;
 	pdev->features = features;
 	pwc_construct(pdev); /* set min/max sizes correct */
 
@@ -1107,24 +1084,14 @@
 	pdev->release = le16_to_cpu(udev->descriptor.bcdDevice);
 	PWC_DEBUG_PROBE("Release: %04x\n", pdev->release);
 
-	/* Now search device_hint[] table for a match, so we can hint a node number. */
-	for (hint = 0; hint < MAX_DEV_HINTS; hint++) {
-		if (((device_hint[hint].type == -1) || (device_hint[hint].type == pdev->type)) &&
-		     (device_hint[hint].pdev == NULL)) {
-			/* so far, so good... try serial number */
-			if ((device_hint[hint].serial_number[0] == '*') || !strcmp(device_hint[hint].serial_number, serial_number)) {
-				/* match! */
-				video_nr = device_hint[hint].device_node;
-				PWC_DEBUG_PROBE("Found hint, will try to register as /dev/video%d\n", video_nr);
-				break;
-			}
-		}
+	/* Allocate USB command buffers */
+	pdev->ctrl_buf = kmalloc(sizeof(pdev->cmd_buf), GFP_KERNEL);
+	if (!pdev->ctrl_buf) {
+		PWC_ERROR("Oops, could not allocate memory for pwc_device.\n");
+		rc = -ENOMEM;
+		goto err_free_mem;
 	}
 
-	/* occupy slot */
-	if (hint < MAX_DEV_HINTS)
-		device_hint[hint].pdev = pdev;
-
 #ifdef CONFIG_USB_PWC_DEBUG
 	/* Query sensor type */
 	if (pwc_get_cmos_sensor(pdev, &rc) >= 0) {
@@ -1138,8 +1105,8 @@
 	pwc_set_leds(pdev, 0, 0);
 
 	/* Setup intial videomode */
-	rc = pwc_set_video_mode(pdev, MAX_WIDTH, MAX_HEIGHT, pdev->vframes,
-				&compression);
+	rc = pwc_set_video_mode(pdev, MAX_WIDTH, MAX_HEIGHT,
+				V4L2_PIX_FMT_YUV420, 30, &compression, 1);
 	if (rc)
 		goto err_free_mem;
 
@@ -1164,7 +1131,7 @@
 	pdev->v4l2_dev.ctrl_handler = &pdev->ctrl_handler;
 	pdev->vdev.v4l2_dev = &pdev->v4l2_dev;
 
-	rc = video_register_device(&pdev->vdev, VFL_TYPE_GRABBER, video_nr);
+	rc = video_register_device(&pdev->vdev, VFL_TYPE_GRABBER, -1);
 	if (rc < 0) {
 		PWC_ERROR("Failed to register as video device (%d).\n", rc);
 		goto err_unregister_v4l2_dev;
@@ -1207,8 +1174,7 @@
 err_free_controls:
 	v4l2_ctrl_handler_free(&pdev->ctrl_handler);
 err_free_mem:
-	if (hint < MAX_DEV_HINTS)
-		device_hint[hint].pdev = NULL;
+	kfree(pdev->ctrl_buf);
 	kfree(pdev);
 	return rc;
 }
@@ -1243,27 +1209,19 @@
  * Initialization code & module stuff
  */
 
-static int fps;
-static int leds[2] = { -1, -1 };
 static unsigned int leds_nargs;
-static char *dev_hint[MAX_DEV_HINTS];
-static unsigned int dev_hint_nargs;
 
-module_param(fps, int, 0444);
 #ifdef CONFIG_USB_PWC_DEBUG
 module_param_named(trace, pwc_trace, int, 0644);
 #endif
 module_param(power_save, int, 0644);
 module_param_array(leds, int, &leds_nargs, 0444);
-module_param_array(dev_hint, charp, &dev_hint_nargs, 0444);
 
-MODULE_PARM_DESC(fps, "Initial frames per second. Varies with model, useful range 5-30");
 #ifdef CONFIG_USB_PWC_DEBUG
 MODULE_PARM_DESC(trace, "For debugging purposes");
 #endif
 MODULE_PARM_DESC(power_save, "Turn power saving for new cameras on or off");
 MODULE_PARM_DESC(leds, "LED on,off time in milliseconds");
-MODULE_PARM_DESC(dev_hint, "Device node hints");
 
 MODULE_DESCRIPTION("Philips & OEM USB webcam driver");
 MODULE_AUTHOR("Luc Saillard <luc@saillard.org>");
@@ -1273,114 +1231,13 @@
 
 static int __init usb_pwc_init(void)
 {
-	int i;
-
-#ifdef CONFIG_USB_PWC_DEBUG
-	PWC_INFO("Philips webcam module version " PWC_VERSION " loaded.\n");
-	PWC_INFO("Supports Philips PCA645/646, PCVC675/680/690, PCVC720[40]/730/740/750 & PCVC830/840.\n");
-	PWC_INFO("Also supports the Askey VC010, various Logitech Quickcams, Samsung MPC-C10 and MPC-C30,\n");
-	PWC_INFO("the Creative WebCam 5 & Pro Ex, SOTEC Afina Eye and Visionite VCS-UC300 and VCS-UM100.\n");
-
-	if (pwc_trace >= 0) {
-		PWC_DEBUG_MODULE("Trace options: 0x%04x\n", pwc_trace);
-	}
-#endif
-
-	if (fps) {
-		if (fps < 4 || fps > 30) {
-			PWC_ERROR("Framerate out of bounds (4-30).\n");
-			return -EINVAL;
-		}
-		default_fps = fps;
-		PWC_DEBUG_MODULE("Default framerate set to %d.\n", default_fps);
-	}
-
-	if (leds[0] >= 0)
-		led_on = leds[0];
-	if (leds[1] >= 0)
-		led_off = leds[1];
-
-	/* Big device node whoopla. Basically, it allows you to assign a
-	   device node (/dev/videoX) to a camera, based on its type
-	   & serial number. The format is [type[.serialnumber]:]node.
-
-	   Any camera that isn't matched by these rules gets the next
-	   available free device node.
-	 */
-	for (i = 0; i < MAX_DEV_HINTS; i++) {
-		char *s, *colon, *dot;
-
-		/* This loop also initializes the array */
-		device_hint[i].pdev = NULL;
-		s = dev_hint[i];
-		if (s != NULL && *s != '\0') {
-			device_hint[i].type = -1; /* wildcard */
-			strcpy(device_hint[i].serial_number, "*");
-
-			/* parse string: chop at ':' & '/' */
-			colon = dot = s;
-			while (*colon != '\0' && *colon != ':')
-				colon++;
-			while (*dot != '\0' && *dot != '.')
-				dot++;
-			/* Few sanity checks */
-			if (*dot != '\0' && dot > colon) {
-				PWC_ERROR("Malformed camera hint: the colon must be after the dot.\n");
-				return -EINVAL;
-			}
-
-			if (*colon == '\0') {
-				/* No colon */
-				if (*dot != '\0') {
-					PWC_ERROR("Malformed camera hint: no colon + device node given.\n");
-					return -EINVAL;
-				}
-				else {
-					/* No type or serial number specified, just a number. */
-					device_hint[i].device_node =
-						simple_strtol(s, NULL, 10);
-				}
-			}
-			else {
-				/* There's a colon, so we have at least a type and a device node */
-				device_hint[i].type =
-					simple_strtol(s, NULL, 10);
-				device_hint[i].device_node =
-					simple_strtol(colon + 1, NULL, 10);
-				if (*dot != '\0') {
-					/* There's a serial number as well */
-					int k;
-
-					dot++;
-					k = 0;
-					while (*dot != ':' && k < 29) {
-						device_hint[i].serial_number[k++] = *dot;
-						dot++;
-					}
-					device_hint[i].serial_number[k] = '\0';
-				}
-			}
-			PWC_TRACE("device_hint[%d]:\n", i);
-			PWC_TRACE("  type    : %d\n", device_hint[i].type);
-			PWC_TRACE("  serial# : %s\n", device_hint[i].serial_number);
-			PWC_TRACE("  node    : %d\n", device_hint[i].device_node);
-		}
-		else
-			device_hint[i].type = 0; /* not filled */
-	} /* ..for MAX_DEV_HINTS */
-
-	PWC_DEBUG_PROBE("Registering driver at address 0x%p.\n", &pwc_driver);
 	return usb_register(&pwc_driver);
 }
 
 static void __exit usb_pwc_exit(void)
 {
-	PWC_DEBUG_MODULE("Deregistering driver.\n");
 	usb_deregister(&pwc_driver);
-	PWC_INFO("Philips webcam module removed.\n");
 }
 
 module_init(usb_pwc_init);
 module_exit(usb_pwc_exit);
-
-/* vim: set cino= formatoptions=croql cindent shiftwidth=8 tabstop=8: */
diff --git a/drivers/media/video/pwc/pwc-misc.c b/drivers/media/video/pwc/pwc-misc.c
index 23a55b5..9be5adf 100644
--- a/drivers/media/video/pwc/pwc-misc.c
+++ b/drivers/media/video/pwc/pwc-misc.c
@@ -90,5 +90,4 @@
 		pdev->frame_header_size = 0;
 		pdev->frame_trailer_size = 0;
 	}
-	pdev->pixfmt = V4L2_PIX_FMT_YUV420; /* default */
 }
diff --git a/drivers/media/video/pwc/pwc-v4l.c b/drivers/media/video/pwc/pwc-v4l.c
index 80e2584..f495eeb 100644
--- a/drivers/media/video/pwc/pwc-v4l.c
+++ b/drivers/media/video/pwc/pwc-v4l.c
@@ -493,16 +493,11 @@
 			(pixelformat>>24)&255);
 
 	ret = pwc_set_video_mode(pdev, f->fmt.pix.width, f->fmt.pix.height,
-				 pdev->vframes, &compression);
+				 pixelformat, 30, &compression, 0);
 
 	PWC_DEBUG_IOCTL("pwc_set_video_mode(), return=%d\n", ret);
 
-	if (ret == 0) {
-		pdev->pixfmt = pixelformat;
-		pwc_vidioc_fill_fmt(f, pdev->width, pdev->height,
-				    pdev->pixfmt);
-	}
-
+	pwc_vidioc_fill_fmt(f, pdev->width, pdev->height, pdev->pixfmt);
 leave:
 	mutex_unlock(&pdev->udevlock);
 	return ret;
@@ -777,33 +772,33 @@
 static int pwc_set_motor(struct pwc_device *pdev)
 {
 	int ret;
-	u8 buf[4];
 
-	buf[0] = 0;
+	pdev->ctrl_buf[0] = 0;
 	if (pdev->motor_pan_reset->is_new)
-		buf[0] |= 0x01;
+		pdev->ctrl_buf[0] |= 0x01;
 	if (pdev->motor_tilt_reset->is_new)
-		buf[0] |= 0x02;
+		pdev->ctrl_buf[0] |= 0x02;
 	if (pdev->motor_pan_reset->is_new || pdev->motor_tilt_reset->is_new) {
 		ret = send_control_msg(pdev, SET_MPT_CTL,
-				       PT_RESET_CONTROL_FORMATTER, buf, 1);
+				       PT_RESET_CONTROL_FORMATTER,
+				       pdev->ctrl_buf, 1);
 		if (ret < 0)
 			return ret;
 	}
 
-	memset(buf, 0, sizeof(buf));
+	memset(pdev->ctrl_buf, 0, 4);
 	if (pdev->motor_pan->is_new) {
-		buf[0] = pdev->motor_pan->val & 0xFF;
-		buf[1] = (pdev->motor_pan->val >> 8);
+		pdev->ctrl_buf[0] = pdev->motor_pan->val & 0xFF;
+		pdev->ctrl_buf[1] = (pdev->motor_pan->val >> 8);
 	}
 	if (pdev->motor_tilt->is_new) {
-		buf[2] = pdev->motor_tilt->val & 0xFF;
-		buf[3] = (pdev->motor_tilt->val >> 8);
+		pdev->ctrl_buf[2] = pdev->motor_tilt->val & 0xFF;
+		pdev->ctrl_buf[3] = (pdev->motor_tilt->val >> 8);
 	}
 	if (pdev->motor_pan->is_new || pdev->motor_tilt->is_new) {
 		ret = send_control_msg(pdev, SET_MPT_CTL,
 				       PT_RELATIVE_CONTROL_FORMATTER,
-				       buf, sizeof(buf));
+				       pdev->ctrl_buf, 4);
 		if (ret < 0)
 			return ret;
 	}
@@ -1094,6 +1089,63 @@
 	return 0;
 }
 
+static int pwc_g_parm(struct file *file, void *fh,
+		      struct v4l2_streamparm *parm)
+{
+	struct pwc_device *pdev = video_drvdata(file);
+
+	if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+		return -EINVAL;
+
+	memset(parm, 0, sizeof(*parm));
+
+	parm->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+	parm->parm.capture.readbuffers = MIN_FRAMES;
+	parm->parm.capture.capability |= V4L2_CAP_TIMEPERFRAME;
+	parm->parm.capture.timeperframe.denominator = pdev->vframes;
+	parm->parm.capture.timeperframe.numerator = 1;
+
+	return 0;
+}
+
+static int pwc_s_parm(struct file *file, void *fh,
+		      struct v4l2_streamparm *parm)
+{
+	struct pwc_device *pdev = video_drvdata(file);
+	int compression = 0;
+	int ret, fps;
+
+	if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
+	    parm->parm.capture.timeperframe.numerator == 0)
+		return -EINVAL;
+
+	if (pwc_test_n_set_capt_file(pdev, file))
+		return -EBUSY;
+
+	fps = parm->parm.capture.timeperframe.denominator /
+	      parm->parm.capture.timeperframe.numerator;
+
+	mutex_lock(&pdev->udevlock);
+	if (!pdev->udev) {
+		ret = -ENODEV;
+		goto leave;
+	}
+
+	if (pdev->iso_init) {
+		ret = -EBUSY;
+		goto leave;
+	}
+
+	ret = pwc_set_video_mode(pdev, pdev->width, pdev->height, pdev->pixfmt,
+				 fps, &compression, 0);
+
+	pwc_g_parm(file, fh, parm);
+
+leave:
+	mutex_unlock(&pdev->udevlock);
+	return ret;
+}
+
 static int pwc_log_status(struct file *file, void *priv)
 {
 	struct pwc_device *pdev = video_drvdata(file);
@@ -1120,4 +1172,6 @@
 	.vidioc_log_status		    = pwc_log_status,
 	.vidioc_enum_framesizes		    = pwc_enum_framesizes,
 	.vidioc_enum_frameintervals	    = pwc_enum_frameintervals,
+	.vidioc_g_parm			    = pwc_g_parm,
+	.vidioc_s_parm			    = pwc_s_parm,
 };
diff --git a/drivers/media/video/pwc/pwc.h b/drivers/media/video/pwc/pwc.h
index 47c518f..e4d4d71 100644
--- a/drivers/media/video/pwc/pwc.h
+++ b/drivers/media/video/pwc/pwc.h
@@ -44,6 +44,8 @@
 #ifdef CONFIG_USB_PWC_INPUT_EVDEV
 #include <linux/input.h>
 #endif
+#include "pwc-dec1.h"
+#include "pwc-dec23.h"
 
 /* Version block */
 #define PWC_VERSION	"10.0.15"
@@ -132,9 +134,6 @@
 #define DEVICE_USE_CODEC3(x) ((x)>=700)
 #define DEVICE_USE_CODEC23(x) ((x)>=675)
 
-/* from pwc-dec.h */
-#define PWCX_FLAG_PLANAR        0x0001
-
 /* Request types: video */
 #define SET_LUM_CTL			0x01
 #define GET_LUM_CTL			0x02
@@ -248,8 +247,8 @@
 	char vmirror;		/* for ToUCaM series */
 	char power_save;	/* Do powersaving for this cam */
 
-	int cmd_len;
 	unsigned char cmd_buf[13];
+	unsigned char *ctrl_buf;
 
 	struct urb *urbs[MAX_ISO_BUFS];
 	char iso_init;
@@ -272,7 +271,10 @@
 	int frame_total_size;	/* including header & trailer */
 	int drop_frames;
 
-	void *decompress_data;	/* private data for decompression engine */
+	union {	/* private data for decompression engine */
+		struct pwc_dec1_private dec1;
+		struct pwc_dec23_private dec23;
+	};
 
 	/*
 	 * We have an 'image' and a 'view', where 'image' is the fixed-size img
@@ -364,7 +366,7 @@
 /** Functions in pwc-ctrl.c */
 /* Request a certain video mode. Returns < 0 if not possible */
 extern int pwc_set_video_mode(struct pwc_device *pdev, int width, int height,
-			      int frames, int *compression);
+	int pixfmt, int frames, int *compression, int send_to_cam);
 extern unsigned int pwc_get_fps(struct pwc_device *pdev, unsigned int index, unsigned int size);
 extern int pwc_set_leds(struct pwc_device *pdev, int on_value, int off_value);
 extern int pwc_get_cmos_sensor(struct pwc_device *pdev, int *sensor);
diff --git a/drivers/media/video/s5p-fimc/fimc-capture.c b/drivers/media/video/s5p-fimc/fimc-capture.c
index 510cfab..a9e9653 100644
--- a/drivers/media/video/s5p-fimc/fimc-capture.c
+++ b/drivers/media/video/s5p-fimc/fimc-capture.c
@@ -693,7 +693,7 @@
 			mf->code = 0;
 			continue;
 		}
-		if (mf->width != tfmt->width || mf->width != tfmt->width) {
+		if (mf->width != tfmt->width || mf->height != tfmt->height) {
 			u32 fcc = ffmt->fourcc;
 			tfmt->width  = mf->width;
 			tfmt->height = mf->height;
@@ -702,7 +702,8 @@
 					       NULL, &fcc, FIMC_SD_PAD_SOURCE);
 			if (ffmt && ffmt->mbus_code)
 				mf->code = ffmt->mbus_code;
-			if (mf->width != tfmt->width || mf->width != tfmt->width)
+			if (mf->width != tfmt->width ||
+			    mf->height != tfmt->height)
 				continue;
 			tfmt->code = mf->code;
 		}
@@ -710,7 +711,7 @@
 			ret = v4l2_subdev_call(csis, pad, set_fmt, NULL, &sfmt);
 
 		if (mf->code == tfmt->code &&
-		    mf->width == tfmt->width && mf->width == tfmt->width)
+		    mf->width == tfmt->width && mf->height == tfmt->height)
 			break;
 	}
 
diff --git a/drivers/media/video/s5p-fimc/fimc-core.c b/drivers/media/video/s5p-fimc/fimc-core.c
index f5cbb8a..81bcbb9 100644
--- a/drivers/media/video/s5p-fimc/fimc-core.c
+++ b/drivers/media/video/s5p-fimc/fimc-core.c
@@ -848,11 +848,11 @@
 	v4l2_ctrl_handler_init(&ctx->ctrl_handler, 4);
 
 	ctx->ctrl_rotate = v4l2_ctrl_new_std(&ctx->ctrl_handler, &fimc_ctrl_ops,
-				     V4L2_CID_HFLIP, 0, 1, 1, 0);
+					V4L2_CID_ROTATE, 0, 270, 90, 0);
 	ctx->ctrl_hflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &fimc_ctrl_ops,
-				    V4L2_CID_VFLIP, 0, 1, 1, 0);
+					V4L2_CID_HFLIP, 0, 1, 1, 0);
 	ctx->ctrl_vflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &fimc_ctrl_ops,
-				    V4L2_CID_ROTATE, 0, 270, 90, 0);
+					V4L2_CID_VFLIP, 0, 1, 1, 0);
 	if (variant->has_alpha)
 		ctx->ctrl_alpha = v4l2_ctrl_new_std(&ctx->ctrl_handler,
 				    &fimc_ctrl_ops, V4L2_CID_ALPHA_COMPONENT,
diff --git a/drivers/media/video/s5p-fimc/fimc-mdevice.c b/drivers/media/video/s5p-fimc/fimc-mdevice.c
index 615c862..8ea4ee1 100644
--- a/drivers/media/video/s5p-fimc/fimc-mdevice.c
+++ b/drivers/media/video/s5p-fimc/fimc-mdevice.c
@@ -21,7 +21,6 @@
 #include <linux/pm_runtime.h>
 #include <linux/types.h>
 #include <linux/slab.h>
-#include <linux/version.h>
 #include <media/v4l2-ctrls.h>
 #include <media/media-device.h>
 
diff --git a/drivers/media/video/s5p-g2d/g2d.c b/drivers/media/video/s5p-g2d/g2d.c
index c40b0dd..febaa67 100644
--- a/drivers/media/video/s5p-g2d/g2d.c
+++ b/drivers/media/video/s5p-g2d/g2d.c
@@ -184,6 +184,7 @@
 			ctx->rop = ROP4_INVERT;
 		else
 			ctx->rop = ROP4_COPY;
+		break;
 	default:
 		v4l2_err(&ctx->dev->v4l2_dev, "unknown control\n");
 		return -EINVAL;
diff --git a/drivers/media/video/s5p-jpeg/jpeg-core.c b/drivers/media/video/s5p-jpeg/jpeg-core.c
index f841a3e..1105a87 100644
--- a/drivers/media/video/s5p-jpeg/jpeg-core.c
+++ b/drivers/media/video/s5p-jpeg/jpeg-core.c
@@ -989,9 +989,10 @@
  * ============================================================================
  */
 
-static int s5p_jpeg_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
-				unsigned int *nplanes, unsigned int sizes[],
-				void *alloc_ctxs[])
+static int s5p_jpeg_queue_setup(struct vb2_queue *vq,
+			   const struct v4l2_format *fmt,
+			   unsigned int *nbuffers, unsigned int *nplanes,
+			   unsigned int sizes[], void *alloc_ctxs[])
 {
 	struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(vq);
 	struct s5p_jpeg_q_data *q_data = NULL;
diff --git a/drivers/media/video/s5p-mfc/s5p_mfc.c b/drivers/media/video/s5p-mfc/s5p_mfc.c
index e43e128..83fe461 100644
--- a/drivers/media/video/s5p-mfc/s5p_mfc.c
+++ b/drivers/media/video/s5p-mfc/s5p_mfc.c
@@ -18,7 +18,6 @@
 #include <linux/platform_device.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
-#include <linux/version.h>
 #include <linux/videodev2.h>
 #include <linux/workqueue.h>
 #include <media/videobuf2-core.h>
@@ -475,7 +474,7 @@
 			ctx->mv_size = 0;
 		}
 		ctx->dpb_count = s5p_mfc_get_dpb_count();
-		if (ctx->img_width == 0 || ctx->img_width == 0)
+		if (ctx->img_width == 0 || ctx->img_height == 0)
 			ctx->state = MFCINST_ERROR;
 		else
 			ctx->state = MFCINST_HEAD_PARSED;
diff --git a/drivers/media/video/s5p-mfc/s5p_mfc_dec.c b/drivers/media/video/s5p-mfc/s5p_mfc_dec.c
index 844a4d7..c25ec02 100644
--- a/drivers/media/video/s5p-mfc/s5p_mfc_dec.c
+++ b/drivers/media/video/s5p-mfc/s5p_mfc_dec.c
@@ -165,7 +165,7 @@
 		.maximum = 32,
 		.step = 1,
 		.default_value = 1,
-		.flags = V4L2_CTRL_FLAG_VOLATILE,
+		.is_volatile = 1,
 	},
 };
 
diff --git a/drivers/media/video/saa7164/saa7164-cards.c b/drivers/media/video/saa7164/saa7164-cards.c
index 971591d..5b72da5 100644
--- a/drivers/media/video/saa7164/saa7164-cards.c
+++ b/drivers/media/video/saa7164/saa7164-cards.c
@@ -269,8 +269,6 @@
 		.portb		= SAA7164_MPEG_DVB,
 		.portc		= SAA7164_MPEG_ENCODER,
 		.portd		= SAA7164_MPEG_ENCODER,
-		.portc		= SAA7164_MPEG_ENCODER,
-		.portd		= SAA7164_MPEG_ENCODER,
 		.porte		= SAA7164_MPEG_VBI,
 		.portf		= SAA7164_MPEG_VBI,
 		.chiprev	= SAA7164_CHIP_REV3,
@@ -333,8 +331,6 @@
 		.portd		= SAA7164_MPEG_ENCODER,
 		.porte		= SAA7164_MPEG_VBI,
 		.portf		= SAA7164_MPEG_VBI,
-		.porte		= SAA7164_MPEG_VBI,
-		.portf		= SAA7164_MPEG_VBI,
 		.chiprev	= SAA7164_CHIP_REV3,
 		.unit		= {{
 			.id		= 0x28,
diff --git a/drivers/media/video/timblogiw.c b/drivers/media/video/timblogiw.c
index 0a2d75f..4ed1c7c2 100644
--- a/drivers/media/video/timblogiw.c
+++ b/drivers/media/video/timblogiw.c
@@ -565,7 +565,7 @@
 	spin_unlock_irq(&fh->queue_lock);
 
 	desc = fh->chan->device->device_prep_slave_sg(fh->chan,
-		buf->sg, sg_elems, DMA_FROM_DEVICE,
+		buf->sg, sg_elems, DMA_DEV_TO_MEM,
 		DMA_PREP_INTERRUPT | DMA_COMPL_SKIP_SRC_UNMAP);
 	if (!desc) {
 		spin_lock_irq(&fh->queue_lock);
diff --git a/drivers/media/video/tlg2300/pd-main.c b/drivers/media/video/tlg2300/pd-main.c
index 129f135..c096b3f 100644
--- a/drivers/media/video/tlg2300/pd-main.c
+++ b/drivers/media/video/tlg2300/pd-main.c
@@ -374,7 +374,7 @@
 }
 #endif
 
-static bool check_firmware(struct usb_device *udev, int *down_firmware)
+static int check_firmware(struct usb_device *udev, int *down_firmware)
 {
 	void *buf;
 	int ret;
@@ -398,7 +398,7 @@
 		*down_firmware = 1;
 		return firmware_download(udev);
 	}
-	return ret;
+	return 0;
 }
 
 static int poseidon_probe(struct usb_interface *interface,
diff --git a/drivers/media/video/v4l2-ctrls.c b/drivers/media/video/v4l2-ctrls.c
index da1f4c2..cccd42b 100644
--- a/drivers/media/video/v4l2-ctrls.c
+++ b/drivers/media/video/v4l2-ctrls.c
@@ -465,8 +465,8 @@
 	case V4L2_CID_CHROMA_GAIN:		return "Chroma Gain";
 	case V4L2_CID_ILLUMINATORS_1:		return "Illuminator 1";
 	case V4L2_CID_ILLUMINATORS_2:		return "Illuminator 2";
-	case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE:	return "Minimum Number of Capture Buffers";
-	case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT:	return "Minimum Number of Output Buffers";
+	case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE:	return "Min Number of Capture Buffers";
+	case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT:	return "Min Number of Output Buffers";
 	case V4L2_CID_ALPHA_COMPONENT:		return "Alpha Component";
 
 	/* MPEG controls */
@@ -506,25 +506,25 @@
 	case V4L2_CID_MPEG_VIDEO_MUTE_YUV:	return "Video Mute YUV";
 	case V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE:	return "Decoder Slice Interface";
 	case V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER:	return "MPEG4 Loop Filter Enable";
-	case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB:	return "The Number of Intra Refresh MBs";
+	case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB:	return "Number of Intra Refresh MBs";
 	case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE:		return "Frame Level Rate Control Enable";
 	case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE:			return "H264 MB Level Rate Control";
 	case V4L2_CID_MPEG_VIDEO_HEADER_MODE:			return "Sequence Header Mode";
-	case V4L2_CID_MPEG_VIDEO_MAX_REF_PIC:			return "The Max Number of Reference Picture";
+	case V4L2_CID_MPEG_VIDEO_MAX_REF_PIC:			return "Max Number of Reference Pics";
 	case V4L2_CID_MPEG_VIDEO_H263_I_FRAME_QP:		return "H263 I-Frame QP Value";
-	case V4L2_CID_MPEG_VIDEO_H263_P_FRAME_QP:		return "H263 P frame QP Value";
-	case V4L2_CID_MPEG_VIDEO_H263_B_FRAME_QP:		return "H263 B frame QP Value";
+	case V4L2_CID_MPEG_VIDEO_H263_P_FRAME_QP:		return "H263 P-Frame QP Value";
+	case V4L2_CID_MPEG_VIDEO_H263_B_FRAME_QP:		return "H263 B-Frame QP Value";
 	case V4L2_CID_MPEG_VIDEO_H263_MIN_QP:			return "H263 Minimum QP Value";
 	case V4L2_CID_MPEG_VIDEO_H263_MAX_QP:			return "H263 Maximum QP Value";
 	case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP:		return "H264 I-Frame QP Value";
-	case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP:		return "H264 P frame QP Value";
-	case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_QP:		return "H264 B frame QP Value";
+	case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP:		return "H264 P-Frame QP Value";
+	case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_QP:		return "H264 B-Frame QP Value";
 	case V4L2_CID_MPEG_VIDEO_H264_MAX_QP:			return "H264 Maximum QP Value";
 	case V4L2_CID_MPEG_VIDEO_H264_MIN_QP:			return "H264 Minimum QP Value";
 	case V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM:		return "H264 8x8 Transform Enable";
 	case V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE:			return "H264 CPB Buffer Size";
-	case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE:		return "H264 Entorpy Mode";
-	case V4L2_CID_MPEG_VIDEO_H264_I_PERIOD:			return "H264 I Period";
+	case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE:		return "H264 Entropy Mode";
+	case V4L2_CID_MPEG_VIDEO_H264_I_PERIOD:			return "H264 I-Frame Period";
 	case V4L2_CID_MPEG_VIDEO_H264_LEVEL:			return "H264 Level";
 	case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA:	return "H264 Loop Filter Alpha Offset";
 	case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA:		return "H264 Loop Filter Beta Offset";
@@ -535,16 +535,16 @@
 	case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE:		return "Aspect Ratio VUI Enable";
 	case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC:		return "VUI Aspect Ratio IDC";
 	case V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP:		return "MPEG4 I-Frame QP Value";
-	case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP:		return "MPEG4 P frame QP Value";
-	case V4L2_CID_MPEG_VIDEO_MPEG4_B_FRAME_QP:		return "MPEG4 B frame QP Value";
+	case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP:		return "MPEG4 P-Frame QP Value";
+	case V4L2_CID_MPEG_VIDEO_MPEG4_B_FRAME_QP:		return "MPEG4 B-Frame QP Value";
 	case V4L2_CID_MPEG_VIDEO_MPEG4_MIN_QP:			return "MPEG4 Minimum QP Value";
 	case V4L2_CID_MPEG_VIDEO_MPEG4_MAX_QP:			return "MPEG4 Maximum QP Value";
 	case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL:			return "MPEG4 Level";
 	case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:			return "MPEG4 Profile";
 	case V4L2_CID_MPEG_VIDEO_MPEG4_QPEL:			return "Quarter Pixel Search Enable";
-	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES:		return "The Maximum Bytes Per Slice";
-	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB:		return "The Number of MB in a Slice";
-	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:		return "The Slice Partitioning Method";
+	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES:		return "Maximum Bytes in a Slice";
+	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB:		return "Number of MBs in a Slice";
+	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:		return "Slice Partitioning Method";
 	case V4L2_CID_MPEG_VIDEO_VBV_SIZE:			return "VBV Buffer Size";
 
 	/* CAMERA controls */
@@ -580,7 +580,7 @@
 	case V4L2_CID_AUDIO_LIMITER_ENABLED:	return "Audio Limiter Feature Enabled";
 	case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME: return "Audio Limiter Release Time";
 	case V4L2_CID_AUDIO_LIMITER_DEVIATION:	return "Audio Limiter Deviation";
-	case V4L2_CID_AUDIO_COMPRESSION_ENABLED: return "Audio Compression Feature Enabled";
+	case V4L2_CID_AUDIO_COMPRESSION_ENABLED: return "Audio Compression Enabled";
 	case V4L2_CID_AUDIO_COMPRESSION_GAIN:	return "Audio Compression Gain";
 	case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD: return "Audio Compression Threshold";
 	case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME: return "Audio Compression Attack Time";
@@ -588,24 +588,24 @@
 	case V4L2_CID_PILOT_TONE_ENABLED:	return "Pilot Tone Feature Enabled";
 	case V4L2_CID_PILOT_TONE_DEVIATION:	return "Pilot Tone Deviation";
 	case V4L2_CID_PILOT_TONE_FREQUENCY:	return "Pilot Tone Frequency";
-	case V4L2_CID_TUNE_PREEMPHASIS:		return "Pre-emphasis settings";
+	case V4L2_CID_TUNE_PREEMPHASIS:		return "Pre-Emphasis";
 	case V4L2_CID_TUNE_POWER_LEVEL:		return "Tune Power Level";
 	case V4L2_CID_TUNE_ANTENNA_CAPACITOR:	return "Tune Antenna Capacitor";
 
 	/* Flash controls */
-	case V4L2_CID_FLASH_CLASS:		return "Flash controls";
-	case V4L2_CID_FLASH_LED_MODE:		return "LED mode";
-	case V4L2_CID_FLASH_STROBE_SOURCE:	return "Strobe source";
+	case V4L2_CID_FLASH_CLASS:		return "Flash Controls";
+	case V4L2_CID_FLASH_LED_MODE:		return "LED Mode";
+	case V4L2_CID_FLASH_STROBE_SOURCE:	return "Strobe Source";
 	case V4L2_CID_FLASH_STROBE:		return "Strobe";
-	case V4L2_CID_FLASH_STROBE_STOP:	return "Stop strobe";
-	case V4L2_CID_FLASH_STROBE_STATUS:	return "Strobe status";
-	case V4L2_CID_FLASH_TIMEOUT:		return "Strobe timeout";
-	case V4L2_CID_FLASH_INTENSITY:		return "Intensity, flash mode";
-	case V4L2_CID_FLASH_TORCH_INTENSITY:	return "Intensity, torch mode";
-	case V4L2_CID_FLASH_INDICATOR_INTENSITY: return "Intensity, indicator";
+	case V4L2_CID_FLASH_STROBE_STOP:	return "Stop Strobe";
+	case V4L2_CID_FLASH_STROBE_STATUS:	return "Strobe Status";
+	case V4L2_CID_FLASH_TIMEOUT:		return "Strobe Timeout";
+	case V4L2_CID_FLASH_INTENSITY:		return "Intensity, Flash Mode";
+	case V4L2_CID_FLASH_TORCH_INTENSITY:	return "Intensity, Torch Mode";
+	case V4L2_CID_FLASH_INDICATOR_INTENSITY: return "Intensity, Indicator";
 	case V4L2_CID_FLASH_FAULT:		return "Faults";
 	case V4L2_CID_FLASH_CHARGE:		return "Charge";
-	case V4L2_CID_FLASH_READY:		return "Ready to strobe";
+	case V4L2_CID_FLASH_READY:		return "Ready to Strobe";
 
 	default:
 		return NULL;
diff --git a/drivers/media/video/v4l2-ioctl.c b/drivers/media/video/v4l2-ioctl.c
index 77feeb6..3f62385 100644
--- a/drivers/media/video/v4l2-ioctl.c
+++ b/drivers/media/video/v4l2-ioctl.c
@@ -1871,6 +1871,7 @@
 	case VIDIOC_S_FREQUENCY:
 	{
 		struct v4l2_frequency *p = arg;
+		enum v4l2_tuner_type type;
 
 		if (!ops->vidioc_s_frequency)
 			break;
@@ -1878,9 +1879,14 @@
 			ret = ret_prio;
 			break;
 		}
+		type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
+			V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
 		dbgarg(cmd, "tuner=%d, type=%d, frequency=%d\n",
 				p->tuner, p->type, p->frequency);
-		ret = ops->vidioc_s_frequency(file, fh, p);
+		if (p->type != type)
+			ret = -EINVAL;
+		else
+			ret = ops->vidioc_s_frequency(file, fh, p);
 		break;
 	}
 	case VIDIOC_G_SLICED_VBI_CAP:
diff --git a/drivers/media/video/zoran/zoran_driver.c b/drivers/media/video/zoran/zoran_driver.c
index f6d2641..4c09ab7 100644
--- a/drivers/media/video/zoran/zoran_driver.c
+++ b/drivers/media/video/zoran/zoran_driver.c
@@ -1958,7 +1958,6 @@
 	mutex_unlock(&zr->resource_lock);
 	fb->fmt.colorspace = V4L2_COLORSPACE_SRGB;
 	fb->fmt.field = V4L2_FIELD_INTERLACED;
-	fb->flags = V4L2_FBUF_FLAG_OVERLAY;
 	fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING;
 
 	return 0;
diff --git a/drivers/misc/carma/carma-fpga-program.c b/drivers/misc/carma/carma-fpga-program.c
index eb5cd28..a2d25e4 100644
--- a/drivers/misc/carma/carma-fpga-program.c
+++ b/drivers/misc/carma/carma-fpga-program.c
@@ -513,7 +513,7 @@
 	 * transaction, and then put it under external control
 	 */
 	memset(&config, 0, sizeof(config));
-	config.direction = DMA_TO_DEVICE;
+	config.direction = DMA_MEM_TO_DEV;
 	config.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
 	config.dst_maxburst = fpga_fifo_size(priv->regs) / 2 / 4;
 	ret = chan->device->device_control(chan, DMA_SLAVE_CONFIG,
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index a7ee502..fcfe1eb 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -823,6 +823,7 @@
 	struct scatterlist		*sg;
 	unsigned int			i;
 	enum dma_data_direction		direction;
+	enum dma_transfer_direction	slave_dirn;
 	unsigned int			sglen;
 	u32 iflags;
 
@@ -860,16 +861,19 @@
 	if (host->caps.has_dma)
 		atmci_writel(host, ATMCI_DMA, ATMCI_DMA_CHKSIZE(3) | ATMCI_DMAEN);
 
-	if (data->flags & MMC_DATA_READ)
+	if (data->flags & MMC_DATA_READ) {
 		direction = DMA_FROM_DEVICE;
-	else
+		slave_dirn = DMA_DEV_TO_MEM;
+	} else {
 		direction = DMA_TO_DEVICE;
+		slave_dirn = DMA_MEM_TO_DEV;
+	}
 
 	sglen = dma_map_sg(chan->device->dev, data->sg,
 			data->sg_len, direction);
 
 	desc = chan->device->device_prep_slave_sg(chan,
-			data->sg, sglen, direction,
+			data->sg, sglen, slave_dirn,
 			DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 	if (!desc)
 		goto unmap_exit;
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index ece03b4..0d955ff 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -374,6 +374,7 @@
 	struct dma_chan *chan;
 	struct dma_device *device;
 	struct dma_async_tx_descriptor *desc;
+	enum dma_data_direction buffer_dirn;
 	int nr_sg;
 
 	/* Check if next job is already prepared */
@@ -387,10 +388,12 @@
 	}
 
 	if (data->flags & MMC_DATA_READ) {
-		conf.direction = DMA_FROM_DEVICE;
+		conf.direction = DMA_DEV_TO_MEM;
+		buffer_dirn = DMA_FROM_DEVICE;
 		chan = host->dma_rx_channel;
 	} else {
-		conf.direction = DMA_TO_DEVICE;
+		conf.direction = DMA_MEM_TO_DEV;
+		buffer_dirn = DMA_TO_DEVICE;
 		chan = host->dma_tx_channel;
 	}
 
@@ -403,7 +406,7 @@
 		return -EINVAL;
 
 	device = chan->device;
-	nr_sg = dma_map_sg(device->dev, data->sg, data->sg_len, conf.direction);
+	nr_sg = dma_map_sg(device->dev, data->sg, data->sg_len, buffer_dirn);
 	if (nr_sg == 0)
 		return -EINVAL;
 
@@ -426,7 +429,7 @@
  unmap_exit:
 	if (!next)
 		dmaengine_terminate_all(chan);
-	dma_unmap_sg(device->dev, data->sg, data->sg_len, conf.direction);
+	dma_unmap_sg(device->dev, data->sg, data->sg_len, buffer_dirn);
 	return -ENOMEM;
 }
 
diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c
index 7088b40..4184b79 100644
--- a/drivers/mmc/host/mxcmmc.c
+++ b/drivers/mmc/host/mxcmmc.c
@@ -218,6 +218,7 @@
 	unsigned int blksz = data->blksz;
 	unsigned int datasize = nob * blksz;
 	struct scatterlist *sg;
+	enum dma_transfer_direction slave_dirn;
 	int i, nents;
 
 	if (data->flags & MMC_DATA_STREAM)
@@ -240,10 +241,13 @@
 		}
 	}
 
-	if (data->flags & MMC_DATA_READ)
+	if (data->flags & MMC_DATA_READ) {
 		host->dma_dir = DMA_FROM_DEVICE;
-	else
+		slave_dirn = DMA_DEV_TO_MEM;
+	} else {
 		host->dma_dir = DMA_TO_DEVICE;
+		slave_dirn = DMA_MEM_TO_DEV;
+	}
 
 	nents = dma_map_sg(host->dma->device->dev, data->sg,
 				     data->sg_len,  host->dma_dir);
@@ -251,7 +255,7 @@
 		return -EINVAL;
 
 	host->desc = host->dma->device->device_prep_slave_sg(host->dma,
-		data->sg, data->sg_len, host->dma_dir,
+		data->sg, data->sg_len, slave_dirn,
 		DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 
 	if (!host->desc) {
diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
index 4e2e019..382c835 100644
--- a/drivers/mmc/host/mxs-mmc.c
+++ b/drivers/mmc/host/mxs-mmc.c
@@ -154,6 +154,7 @@
 	struct dma_chan         	*dmach;
 	struct mxs_dma_data		dma_data;
 	unsigned int			dma_dir;
+	enum dma_transfer_direction	slave_dirn;
 	u32				ssp_pio_words[SSP_PIO_NUM];
 
 	unsigned int			version;
@@ -324,7 +325,7 @@
 	}
 
 	desc = host->dmach->device->device_prep_slave_sg(host->dmach,
-				sgl, sg_len, host->dma_dir, append);
+				sgl, sg_len, host->slave_dirn, append);
 	if (desc) {
 		desc->callback = mxs_mmc_dma_irq_callback;
 		desc->callback_param = host;
@@ -356,6 +357,7 @@
 	host->ssp_pio_words[1] = cmd0;
 	host->ssp_pio_words[2] = cmd1;
 	host->dma_dir = DMA_NONE;
+	host->slave_dirn = DMA_TRANS_NONE;
 	desc = mxs_mmc_prep_dma(host, 0);
 	if (!desc)
 		goto out;
@@ -395,6 +397,7 @@
 	host->ssp_pio_words[1] = cmd0;
 	host->ssp_pio_words[2] = cmd1;
 	host->dma_dir = DMA_NONE;
+	host->slave_dirn = DMA_TRANS_NONE;
 	desc = mxs_mmc_prep_dma(host, 0);
 	if (!desc)
 		goto out;
@@ -433,6 +436,7 @@
 	int i;
 
 	unsigned short dma_data_dir, timeout;
+	enum dma_transfer_direction slave_dirn;
 	unsigned int data_size = 0, log2_blksz;
 	unsigned int blocks = data->blocks;
 
@@ -448,9 +452,11 @@
 
 	if (data->flags & MMC_DATA_WRITE) {
 		dma_data_dir = DMA_TO_DEVICE;
+		slave_dirn = DMA_MEM_TO_DEV;
 		read = 0;
 	} else {
 		dma_data_dir = DMA_FROM_DEVICE;
+		slave_dirn = DMA_DEV_TO_MEM;
 		read = BM_SSP_CTRL0_READ;
 	}
 
@@ -510,6 +516,7 @@
 	host->ssp_pio_words[1] = cmd0;
 	host->ssp_pio_words[2] = cmd1;
 	host->dma_dir = DMA_NONE;
+	host->slave_dirn = DMA_TRANS_NONE;
 	desc = mxs_mmc_prep_dma(host, 0);
 	if (!desc)
 		goto out;
@@ -518,6 +525,7 @@
 	WARN_ON(host->data != NULL);
 	host->data = data;
 	host->dma_dir = dma_data_dir;
+	host->slave_dirn = slave_dirn;
 	desc = mxs_mmc_prep_dma(host, 1);
 	if (!desc)
 		goto out;
diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c
index 4a2c5b2..f5d8b53 100644
--- a/drivers/mmc/host/sh_mmcif.c
+++ b/drivers/mmc/host/sh_mmcif.c
@@ -286,7 +286,7 @@
 	if (ret > 0) {
 		host->dma_active = true;
 		desc = chan->device->device_prep_slave_sg(chan, sg, ret,
-			DMA_FROM_DEVICE, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+			DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 	}
 
 	if (desc) {
@@ -335,7 +335,7 @@
 	if (ret > 0) {
 		host->dma_active = true;
 		desc = chan->device->device_prep_slave_sg(chan, sg, ret,
-			DMA_TO_DEVICE, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+			DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 	}
 
 	if (desc) {
diff --git a/drivers/mmc/host/tmio_mmc_dma.c b/drivers/mmc/host/tmio_mmc_dma.c
index 86f259c..7a6e6cc 100644
--- a/drivers/mmc/host/tmio_mmc_dma.c
+++ b/drivers/mmc/host/tmio_mmc_dma.c
@@ -77,7 +77,7 @@
 	ret = dma_map_sg(chan->device->dev, sg, host->sg_len, DMA_FROM_DEVICE);
 	if (ret > 0)
 		desc = chan->device->device_prep_slave_sg(chan, sg, ret,
-			DMA_FROM_DEVICE, DMA_CTRL_ACK);
+			DMA_DEV_TO_MEM, DMA_CTRL_ACK);
 
 	if (desc) {
 		cookie = dmaengine_submit(desc);
@@ -158,7 +158,7 @@
 	ret = dma_map_sg(chan->device->dev, sg, host->sg_len, DMA_TO_DEVICE);
 	if (ret > 0)
 		desc = chan->device->device_prep_slave_sg(chan, sg, ret,
-			DMA_TO_DEVICE, DMA_CTRL_ACK);
+			DMA_MEM_TO_DEV, DMA_CTRL_ACK);
 
 	if (desc) {
 		cookie = dmaengine_submit(desc);
diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-lib.c b/drivers/mtd/nand/gpmi-nand/gpmi-lib.c
index 2a56fc6..7f68042 100644
--- a/drivers/mtd/nand/gpmi-nand/gpmi-lib.c
+++ b/drivers/mtd/nand/gpmi-nand/gpmi-lib.c
@@ -827,7 +827,7 @@
 	pio[1] = pio[2] = 0;
 	desc = channel->device->device_prep_slave_sg(channel,
 					(struct scatterlist *)pio,
-					ARRAY_SIZE(pio), DMA_NONE, 0);
+					ARRAY_SIZE(pio), DMA_TRANS_NONE, 0);
 	if (!desc) {
 		pr_err("step 1 error\n");
 		return -1;
@@ -839,7 +839,7 @@
 	sg_init_one(sgl, this->cmd_buffer, this->command_length);
 	dma_map_sg(this->dev, sgl, 1, DMA_TO_DEVICE);
 	desc = channel->device->device_prep_slave_sg(channel,
-					sgl, 1, DMA_TO_DEVICE, 1);
+					sgl, 1, DMA_MEM_TO_DEV, 1);
 	if (!desc) {
 		pr_err("step 2 error\n");
 		return -1;
@@ -872,7 +872,7 @@
 	pio[1] = 0;
 	desc = channel->device->device_prep_slave_sg(channel,
 					(struct scatterlist *)pio,
-					ARRAY_SIZE(pio), DMA_NONE, 0);
+					ARRAY_SIZE(pio), DMA_TRANS_NONE, 0);
 	if (!desc) {
 		pr_err("step 1 error\n");
 		return -1;
@@ -881,7 +881,7 @@
 	/* [2] send DMA request */
 	prepare_data_dma(this, DMA_TO_DEVICE);
 	desc = channel->device->device_prep_slave_sg(channel, &this->data_sgl,
-						1, DMA_TO_DEVICE, 1);
+						1, DMA_MEM_TO_DEV, 1);
 	if (!desc) {
 		pr_err("step 2 error\n");
 		return -1;
@@ -908,7 +908,7 @@
 	pio[1] = 0;
 	desc = channel->device->device_prep_slave_sg(channel,
 					(struct scatterlist *)pio,
-					ARRAY_SIZE(pio), DMA_NONE, 0);
+					ARRAY_SIZE(pio), DMA_TRANS_NONE, 0);
 	if (!desc) {
 		pr_err("step 1 error\n");
 		return -1;
@@ -917,7 +917,7 @@
 	/* [2] : send DMA request */
 	prepare_data_dma(this, DMA_FROM_DEVICE);
 	desc = channel->device->device_prep_slave_sg(channel, &this->data_sgl,
-						1, DMA_FROM_DEVICE, 1);
+						1, DMA_DEV_TO_MEM, 1);
 	if (!desc) {
 		pr_err("step 2 error\n");
 		return -1;
@@ -964,7 +964,7 @@
 
 	desc = channel->device->device_prep_slave_sg(channel,
 					(struct scatterlist *)pio,
-					ARRAY_SIZE(pio), DMA_NONE, 0);
+					ARRAY_SIZE(pio), DMA_TRANS_NONE, 0);
 	if (!desc) {
 		pr_err("step 2 error\n");
 		return -1;
@@ -998,7 +998,8 @@
 		| BF_GPMI_CTRL0_XFER_COUNT(0);
 	pio[1] = 0;
 	desc = channel->device->device_prep_slave_sg(channel,
-				(struct scatterlist *)pio, 2, DMA_NONE, 0);
+				(struct scatterlist *)pio, 2,
+				DMA_TRANS_NONE, 0);
 	if (!desc) {
 		pr_err("step 1 error\n");
 		return -1;
@@ -1027,7 +1028,7 @@
 	pio[5] = auxiliary;
 	desc = channel->device->device_prep_slave_sg(channel,
 					(struct scatterlist *)pio,
-					ARRAY_SIZE(pio), DMA_NONE, 1);
+					ARRAY_SIZE(pio), DMA_TRANS_NONE, 1);
 	if (!desc) {
 		pr_err("step 2 error\n");
 		return -1;
@@ -1045,7 +1046,8 @@
 		| BF_GPMI_CTRL0_XFER_COUNT(geo->page_size);
 	pio[1] = 0;
 	desc = channel->device->device_prep_slave_sg(channel,
-				(struct scatterlist *)pio, 2, DMA_NONE, 1);
+				(struct scatterlist *)pio, 2,
+				DMA_TRANS_NONE, 1);
 	if (!desc) {
 		pr_err("step 3 error\n");
 		return -1;
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c
index a688b9d..f99c6e3 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c
@@ -365,13 +365,18 @@
 	DP(NETIF_MSG_LINK, "cfg_idx = %x\n", cfg_idx);
 
 	if (cmd->autoneg == AUTONEG_ENABLE) {
+		u32 an_supported_speed = bp->port.supported[cfg_idx];
+		if (bp->link_params.phy[EXT_PHY1].type ==
+		    PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM84833)
+			an_supported_speed |= (SUPPORTED_100baseT_Half |
+					       SUPPORTED_100baseT_Full);
 		if (!(bp->port.supported[cfg_idx] & SUPPORTED_Autoneg)) {
 			DP(NETIF_MSG_LINK, "Autoneg not supported\n");
 			return -EINVAL;
 		}
 
 		/* advertise the requested speed and duplex if supported */
-		if (cmd->advertising & ~(bp->port.supported[cfg_idx])) {
+		if (cmd->advertising & ~an_supported_speed) {
 			DP(NETIF_MSG_LINK, "Advertisement parameters "
 					   "are not supported\n");
 			return -EINVAL;
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
index 4df9505..2091e5d 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
@@ -2502,7 +2502,7 @@
 		struct bnx2x_nig_brb_pfc_port_params *nig_params)
 {
 	u32 xcm_mask = 0, ppp_enable = 0, pause_enable = 0, llfc_out_en = 0;
-	u32 llfc_enable = 0, xcm0_out_en = 0, p0_hwpfc_enable = 0;
+	u32 llfc_enable = 0, xcm_out_en = 0, hwpfc_enable = 0;
 	u32 pkt_priority_to_cos = 0;
 	struct bnx2x *bp = params->bp;
 	u8 port = params->port;
@@ -2516,9 +2516,8 @@
 	 * MAC control frames (that are not pause packets)
 	 * will be forwarded to the XCM.
 	 */
-	xcm_mask = REG_RD(bp,
-				port ? NIG_REG_LLH1_XCM_MASK :
-				NIG_REG_LLH0_XCM_MASK);
+	xcm_mask = REG_RD(bp, port ? NIG_REG_LLH1_XCM_MASK :
+			  NIG_REG_LLH0_XCM_MASK);
 	/*
 	 * nig params will override non PFC params, since it's possible to
 	 * do transition from PFC to SAFC
@@ -2533,8 +2532,8 @@
 		ppp_enable = 1;
 		xcm_mask &= ~(port ? NIG_LLH1_XCM_MASK_REG_LLH1_XCM_MASK_BCN :
 				     NIG_LLH0_XCM_MASK_REG_LLH0_XCM_MASK_BCN);
-		xcm0_out_en = 0;
-		p0_hwpfc_enable = 1;
+		xcm_out_en = 0;
+		hwpfc_enable = 1;
 	} else  {
 		if (nig_params) {
 			llfc_out_en = nig_params->llfc_out_en;
@@ -2545,7 +2544,7 @@
 
 		xcm_mask |= (port ? NIG_LLH1_XCM_MASK_REG_LLH1_XCM_MASK_BCN :
 			NIG_LLH0_XCM_MASK_REG_LLH0_XCM_MASK_BCN);
-		xcm0_out_en = 1;
+		xcm_out_en = 1;
 	}
 
 	if (CHIP_IS_E3(bp))
@@ -2564,13 +2563,16 @@
 	REG_WR(bp, port ? NIG_REG_LLH1_XCM_MASK :
 	       NIG_REG_LLH0_XCM_MASK, xcm_mask);
 
-	REG_WR(bp,  NIG_REG_LLFC_EGRESS_SRC_ENABLE_0, 0x7);
+	REG_WR(bp, port ? NIG_REG_LLFC_EGRESS_SRC_ENABLE_1 :
+	       NIG_REG_LLFC_EGRESS_SRC_ENABLE_0, 0x7);
 
 	/* output enable for RX_XCM # IF */
-	REG_WR(bp, NIG_REG_XCM0_OUT_EN, xcm0_out_en);
+	REG_WR(bp, port ? NIG_REG_XCM1_OUT_EN :
+	       NIG_REG_XCM0_OUT_EN, xcm_out_en);
 
 	/* HW PFC TX enable */
-	REG_WR(bp, NIG_REG_P0_HWPFC_ENABLE, p0_hwpfc_enable);
+	REG_WR(bp, port ? NIG_REG_P1_HWPFC_ENABLE :
+	       NIG_REG_P0_HWPFC_ENABLE, hwpfc_enable);
 
 	if (nig_params) {
 		u8 i = 0;
@@ -3761,7 +3763,15 @@
 	/* Advertise pause */
 	bnx2x_ext_phy_set_pause(params, phy, vars);
 
-	vars->rx_tx_asic_rst = MAX_KR_LINK_RETRY;
+	/*
+	 * Set KR Autoneg Work-Around flag for Warpcore version older than D108
+	 */
+	bnx2x_cl45_read(bp, phy, MDIO_WC_DEVAD,
+			MDIO_WC_REG_UC_INFO_B1_VERSION, &val16);
+	if (val16 < 0xd108) {
+		DP(NETIF_MSG_LINK, "Enable AN KR work-around\n");
+		vars->rx_tx_asic_rst = MAX_KR_LINK_RETRY;
+	}
 
 	bnx2x_cl45_read(bp, phy, MDIO_WC_DEVAD,
 			MDIO_WC_REG_DIGITAL5_MISC7, &val16);
@@ -9266,62 +9276,68 @@
 /*		BCM8481/BCM84823/BCM84833 PHY SECTION	          */
 /******************************************************************/
 static void bnx2x_save_848xx_spirom_version(struct bnx2x_phy *phy,
-					   struct link_params *params)
+					    struct bnx2x *bp,
+					    u8 port)
 {
 	u16 val, fw_ver1, fw_ver2, cnt;
-	u8 port;
-	struct bnx2x *bp = params->bp;
 
-	port = params->port;
+	if (phy->type == PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM84833) {
+		bnx2x_cl45_read(bp, phy, MDIO_CTL_DEVAD, 0x400f, &fw_ver1);
+		bnx2x_save_spirom_version(bp, port,
+				((fw_ver1 & 0xf000)>>5) | (fw_ver1 & 0x7f),
+				phy->ver_addr);
+	} else {
+		/* For 32-bit registers in 848xx, access via MDIO2ARM i/f. */
+		/* (1) set reg 0xc200_0014(SPI_BRIDGE_CTRL_2) to 0x03000000 */
+		bnx2x_cl45_write(bp, phy, MDIO_PMA_DEVAD, 0xA819, 0x0014);
+		bnx2x_cl45_write(bp, phy, MDIO_PMA_DEVAD, 0xA81A, 0xc200);
+		bnx2x_cl45_write(bp, phy, MDIO_PMA_DEVAD, 0xA81B, 0x0000);
+		bnx2x_cl45_write(bp, phy, MDIO_PMA_DEVAD, 0xA81C, 0x0300);
+		bnx2x_cl45_write(bp, phy, MDIO_PMA_DEVAD, 0xA817, 0x0009);
 
-	/* For the 32 bits registers in 848xx, access via MDIO2ARM interface.*/
-	/* (1) set register 0xc200_0014(SPI_BRIDGE_CTRL_2) to 0x03000000 */
-	bnx2x_cl45_write(bp, phy, MDIO_PMA_DEVAD, 0xA819, 0x0014);
-	bnx2x_cl45_write(bp, phy, MDIO_PMA_DEVAD, 0xA81A, 0xc200);
-	bnx2x_cl45_write(bp, phy, MDIO_PMA_DEVAD, 0xA81B, 0x0000);
-	bnx2x_cl45_write(bp, phy, MDIO_PMA_DEVAD, 0xA81C, 0x0300);
-	bnx2x_cl45_write(bp, phy, MDIO_PMA_DEVAD, 0xA817, 0x0009);
+		for (cnt = 0; cnt < 100; cnt++) {
+			bnx2x_cl45_read(bp, phy, MDIO_PMA_DEVAD, 0xA818, &val);
+			if (val & 1)
+				break;
+			udelay(5);
+		}
+		if (cnt == 100) {
+			DP(NETIF_MSG_LINK, "Unable to read 848xx "
+					"phy fw version(1)\n");
+			bnx2x_save_spirom_version(bp, port, 0,
+						  phy->ver_addr);
+			return;
+		}
 
-	for (cnt = 0; cnt < 100; cnt++) {
-		bnx2x_cl45_read(bp, phy, MDIO_PMA_DEVAD, 0xA818, &val);
-		if (val & 1)
-			break;
-		udelay(5);
-	}
-	if (cnt == 100) {
-		DP(NETIF_MSG_LINK, "Unable to read 848xx phy fw version(1)\n");
-		bnx2x_save_spirom_version(bp, port, 0,
+
+		/* 2) read register 0xc200_0000 (SPI_FW_STATUS) */
+		bnx2x_cl45_write(bp, phy, MDIO_PMA_DEVAD, 0xA819, 0x0000);
+		bnx2x_cl45_write(bp, phy, MDIO_PMA_DEVAD, 0xA81A, 0xc200);
+		bnx2x_cl45_write(bp, phy, MDIO_PMA_DEVAD, 0xA817, 0x000A);
+		for (cnt = 0; cnt < 100; cnt++) {
+			bnx2x_cl45_read(bp, phy, MDIO_PMA_DEVAD, 0xA818, &val);
+			if (val & 1)
+				break;
+			udelay(5);
+		}
+		if (cnt == 100) {
+			DP(NETIF_MSG_LINK, "Unable to read 848xx phy fw "
+					"version(2)\n");
+			bnx2x_save_spirom_version(bp, port, 0,
+						  phy->ver_addr);
+			return;
+		}
+
+		/* lower 16 bits of the register SPI_FW_STATUS */
+		bnx2x_cl45_read(bp, phy, MDIO_PMA_DEVAD, 0xA81B, &fw_ver1);
+		/* upper 16 bits of register SPI_FW_STATUS */
+		bnx2x_cl45_read(bp, phy, MDIO_PMA_DEVAD, 0xA81C, &fw_ver2);
+
+		bnx2x_save_spirom_version(bp, port, (fw_ver2<<16) | fw_ver1,
 					  phy->ver_addr);
-		return;
 	}
 
-
-	/* 2) read register 0xc200_0000 (SPI_FW_STATUS) */
-	bnx2x_cl45_write(bp, phy, MDIO_PMA_DEVAD, 0xA819, 0x0000);
-	bnx2x_cl45_write(bp, phy, MDIO_PMA_DEVAD, 0xA81A, 0xc200);
-	bnx2x_cl45_write(bp, phy, MDIO_PMA_DEVAD, 0xA817, 0x000A);
-	for (cnt = 0; cnt < 100; cnt++) {
-		bnx2x_cl45_read(bp, phy, MDIO_PMA_DEVAD, 0xA818, &val);
-		if (val & 1)
-			break;
-		udelay(5);
-	}
-	if (cnt == 100) {
-		DP(NETIF_MSG_LINK, "Unable to read 848xx phy fw version(2)\n");
-		bnx2x_save_spirom_version(bp, port, 0,
-					  phy->ver_addr);
-		return;
-	}
-
-	/* lower 16 bits of the register SPI_FW_STATUS */
-	bnx2x_cl45_read(bp, phy, MDIO_PMA_DEVAD, 0xA81B, &fw_ver1);
-	/* upper 16 bits of register SPI_FW_STATUS */
-	bnx2x_cl45_read(bp, phy, MDIO_PMA_DEVAD, 0xA81C, &fw_ver2);
-
-	bnx2x_save_spirom_version(bp, port, (fw_ver2<<16) | fw_ver1,
-				  phy->ver_addr);
 }
-
 static void bnx2x_848xx_set_led(struct bnx2x *bp,
 				struct bnx2x_phy *phy)
 {
@@ -9392,10 +9408,13 @@
 	u16 tmp_req_line_speed;
 
 	tmp_req_line_speed = phy->req_line_speed;
-	if (phy->type == PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM84833)
+	if (phy->type == PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM84833) {
 		if (phy->req_line_speed == SPEED_10000)
 			phy->req_line_speed = SPEED_AUTO_NEG;
-
+	} else {
+		/* Save spirom version */
+		bnx2x_save_848xx_spirom_version(phy, bp, params->port);
+	}
 	/*
 	 * This phy uses the NIG latch mechanism since link indication
 	 * arrives through its LED4 and not via its LASI signal, so we
@@ -9443,13 +9462,10 @@
 			 an_1000_val);
 
 	/* set 100 speed advertisement */
-	if (((phy->req_line_speed == SPEED_AUTO_NEG) &&
+	if ((phy->req_line_speed == SPEED_AUTO_NEG) &&
 	     (phy->speed_cap_mask &
 	      (PORT_HW_CFG_SPEED_CAPABILITY_D0_100M_FULL |
-	       PORT_HW_CFG_SPEED_CAPABILITY_D0_100M_HALF)) &&
-	     (phy->supported &
-	      (SUPPORTED_100baseT_Half |
-	       SUPPORTED_100baseT_Full)))) {
+	       PORT_HW_CFG_SPEED_CAPABILITY_D0_100M_HALF))) {
 		an_10_100_val |= (1<<7);
 		/* Enable autoneg and restart autoneg for legacy speeds */
 		autoneg_val |= (1<<9 | 1<<12);
@@ -9539,9 +9555,6 @@
 				 MDIO_AN_REG_8481_10GBASE_T_AN_CTRL,
 				 1);
 
-	/* Save spirom version */
-	bnx2x_save_848xx_spirom_version(phy, params);
-
 	phy->req_line_speed = tmp_req_line_speed;
 
 	return 0;
@@ -9749,17 +9762,7 @@
 
 	/* Wait for GPHY to come out of reset */
 	msleep(50);
-	if (phy->type == PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM84833) {
-		/* Bring PHY out of super isolate mode */
-		bnx2x_cl45_read(bp, phy,
-				MDIO_CTL_DEVAD,
-				MDIO_84833_TOP_CFG_XGPHY_STRAP1, &val);
-		val &= ~MDIO_84833_SUPER_ISOLATE;
-		bnx2x_cl45_write(bp, phy,
-				MDIO_CTL_DEVAD,
-				MDIO_84833_TOP_CFG_XGPHY_STRAP1, val);
-		bnx2x_84833_pair_swap_cfg(phy, params, vars);
-	} else {
+	if (phy->type != PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM84833) {
 		/*
 		 * BCM84823 requires that XGXS links up first @ 10G for normal
 		 * behavior.
@@ -9816,24 +9819,23 @@
 	DP(NETIF_MSG_LINK, "Multi_phy config = 0x%x, Media control = 0x%x\n",
 		   params->multi_phy_config, val);
 
-	/* AutogrEEEn */
-	if (params->feature_config_flags &
-		FEATURE_CONFIG_AUTOGREEEN_ENABLED)
-		cmd_args[0] = 0x2;
-	else
-		cmd_args[0] = 0x0;
+	if (phy->type == PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM84833) {
+		bnx2x_84833_pair_swap_cfg(phy, params, vars);
 
-	cmd_args[1] = 0x0;
-	cmd_args[2] = PHY84833_CONSTANT_LATENCY + 1;
-	cmd_args[3] = PHY84833_CONSTANT_LATENCY;
-	rc = bnx2x_84833_cmd_hdlr(phy, params,
-		PHY84833_CMD_SET_EEE_MODE, cmd_args);
-	if (rc != 0)
-		DP(NETIF_MSG_LINK, "Cfg AutogrEEEn failed.\n");
+		/* Keep AutogrEEEn disabled. */
+		cmd_args[0] = 0x0;
+		cmd_args[1] = 0x0;
+		cmd_args[2] = PHY84833_CONSTANT_LATENCY + 1;
+		cmd_args[3] = PHY84833_CONSTANT_LATENCY;
+		rc = bnx2x_84833_cmd_hdlr(phy, params,
+			PHY84833_CMD_SET_EEE_MODE, cmd_args);
+		if (rc != 0)
+			DP(NETIF_MSG_LINK, "Cfg AutogrEEEn failed.\n");
+	}
 	if (initialize)
 		rc = bnx2x_848xx_cmn_config_init(phy, params, vars);
 	else
-		bnx2x_save_848xx_spirom_version(phy, params);
+		bnx2x_save_848xx_spirom_version(phy, bp, params->port);
 	/* 84833 PHY has a better feature and doesn't need to support this. */
 	if (phy->type == PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM84823) {
 		cms_enable = REG_RD(bp, params->shmem_base +
@@ -9851,6 +9853,16 @@
 				 MDIO_CTL_REG_84823_USER_CTRL_REG, val);
 	}
 
+	if (phy->type == PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM84833) {
+		/* Bring PHY out of super isolate mode as the final step. */
+		bnx2x_cl45_read(bp, phy,
+				MDIO_CTL_DEVAD,
+				MDIO_84833_TOP_CFG_XGPHY_STRAP1, &val);
+		val &= ~MDIO_84833_SUPER_ISOLATE;
+		bnx2x_cl45_write(bp, phy,
+				MDIO_CTL_DEVAD,
+				MDIO_84833_TOP_CFG_XGPHY_STRAP1, val);
+	}
 	return rc;
 }
 
@@ -9988,10 +10000,11 @@
 	} else {
 		bnx2x_cl45_read(bp, phy,
 				MDIO_CTL_DEVAD,
-				0x400f, &val16);
+				MDIO_84833_TOP_CFG_XGPHY_STRAP1, &val16);
+		val16 |= MDIO_84833_SUPER_ISOLATE;
 		bnx2x_cl45_write(bp, phy,
-				MDIO_PMA_DEVAD,
-				MDIO_PMA_REG_CTRL, 0x800);
+				 MDIO_CTL_DEVAD,
+				 MDIO_84833_TOP_CFG_XGPHY_STRAP1, val16);
 	}
 }
 
@@ -11516,6 +11529,19 @@
 	}
 	phy->mdio_ctrl = bnx2x_get_emac_base(bp, mdc_mdio_access, port);
 
+	if ((phy->type == PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM84833) &&
+	    (phy->ver_addr)) {
+		/*
+		 * Remove 100Mb link supported for BCM84833 when phy fw
+		 * version lower than or equal to 1.39
+		 */
+		u32 raw_ver = REG_RD(bp, phy->ver_addr);
+		if (((raw_ver & 0x7F) <= 39) &&
+		    (((raw_ver & 0xF80) >> 7) <= 1))
+			phy->supported &= ~(SUPPORTED_100baseT_Half |
+					    SUPPORTED_100baseT_Full);
+	}
+
 	/*
 	 * In case mdc/mdio_access of the external phy is different than the
 	 * mdc/mdio access of the XGXS, a HW lock must be taken in each access
@@ -12333,55 +12359,69 @@
 						u32 chip_id)
 {
 	u8 reset_gpios;
-	struct bnx2x_phy phy;
-	u32 shmem_base, shmem2_base, cnt;
-	s8 port = 0;
-	u16 val;
-
 	reset_gpios = bnx2x_84833_get_reset_gpios(bp, shmem_base_path, chip_id);
 	bnx2x_set_mult_gpio(bp, reset_gpios, MISC_REGISTERS_GPIO_OUTPUT_LOW);
 	udelay(10);
 	bnx2x_set_mult_gpio(bp, reset_gpios, MISC_REGISTERS_GPIO_OUTPUT_HIGH);
 	DP(NETIF_MSG_LINK, "84833 reset pulse on pin values 0x%x\n",
 		reset_gpios);
-	for (port = PORT_MAX - 1; port >= PORT_0; port--) {
-		/* This PHY is for E2 and E3. */
-		shmem_base = shmem_base_path[port];
-		shmem2_base = shmem2_base_path[port];
-		/* Extract the ext phy address for the port */
-		if (bnx2x_populate_phy(bp, phy_index, shmem_base, shmem2_base,
-				       0, &phy) !=
-		    0) {
-			DP(NETIF_MSG_LINK, "populate_phy failed\n");
-			return -EINVAL;
-		}
-
-		/* Wait for FW completing its initialization. */
-		for (cnt = 0; cnt < 1000; cnt++) {
-			bnx2x_cl45_read(bp, &phy,
-				MDIO_PMA_DEVAD,
-				MDIO_PMA_REG_CTRL, &val);
-			if (!(val & (1<<15)))
-				break;
-			msleep(1);
-		}
-		if (cnt >= 1000)
-			DP(NETIF_MSG_LINK,
-				"84833 Cmn reset timeout (%d)\n", port);
-
-		/* Put the port in super isolate mode. */
-		bnx2x_cl45_read(bp, &phy,
-				MDIO_CTL_DEVAD,
-				MDIO_84833_TOP_CFG_XGPHY_STRAP1, &val);
-		val |= MDIO_84833_SUPER_ISOLATE;
-		bnx2x_cl45_write(bp, &phy,
-				MDIO_CTL_DEVAD,
-				MDIO_84833_TOP_CFG_XGPHY_STRAP1, val);
-	}
-
 	return 0;
 }
 
+static int bnx2x_84833_pre_init_phy(struct bnx2x *bp,
+					       struct bnx2x_phy *phy)
+{
+	u16 val, cnt;
+	/* Wait for FW completing its initialization. */
+	for (cnt = 0; cnt < 1500; cnt++) {
+		bnx2x_cl45_read(bp, phy,
+				MDIO_PMA_DEVAD,
+				MDIO_PMA_REG_CTRL, &val);
+		if (!(val & (1<<15)))
+			break;
+		msleep(1);
+	}
+	if (cnt >= 1500) {
+		DP(NETIF_MSG_LINK, "84833 reset timeout\n");
+		return -EINVAL;
+	}
+
+	/* Put the port in super isolate mode. */
+	bnx2x_cl45_read(bp, phy,
+			MDIO_CTL_DEVAD,
+			MDIO_84833_TOP_CFG_XGPHY_STRAP1, &val);
+	val |= MDIO_84833_SUPER_ISOLATE;
+	bnx2x_cl45_write(bp, phy,
+			 MDIO_CTL_DEVAD,
+			 MDIO_84833_TOP_CFG_XGPHY_STRAP1, val);
+
+	/* Save spirom version */
+	bnx2x_save_848xx_spirom_version(phy, bp, PORT_0);
+	return 0;
+}
+
+int bnx2x_pre_init_phy(struct bnx2x *bp,
+				  u32 shmem_base,
+				  u32 shmem2_base,
+				  u32 chip_id)
+{
+	int rc = 0;
+	struct bnx2x_phy phy;
+	bnx2x_set_mdio_clk(bp, chip_id, PORT_0);
+	if (bnx2x_populate_phy(bp, EXT_PHY1, shmem_base, shmem2_base,
+			       PORT_0, &phy)) {
+		DP(NETIF_MSG_LINK, "populate_phy failed\n");
+		return -EINVAL;
+	}
+	switch (phy.type) {
+	case PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM84833:
+		rc = bnx2x_84833_pre_init_phy(bp, &phy);
+		break;
+	default:
+		break;
+	}
+	return rc;
+}
 
 static int bnx2x_ext_phy_common_init(struct bnx2x *bp, u32 shmem_base_path[],
 				     u32 shmem2_base_path[], u8 phy_index,
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h
index 44609de..dddbcf6 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h
@@ -2176,6 +2176,7 @@
  * set to 0x345678021. This is a new register (with 2_) added in E3 B0 to
  * accommodate the 9 input clients to ETS arbiter. */
 #define NIG_REG_P0_TX_ARB_PRIORITY_CLIENT2_MSB			 0x18684
+#define NIG_REG_P1_HWPFC_ENABLE					 0x181d0
 #define NIG_REG_P1_MAC_IN_EN					 0x185c0
 /* [RW 1] Output enable for TX MAC interface */
 #define NIG_REG_P1_MAC_OUT_EN					 0x185c4
diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
index 076e02a..d529af9 100644
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -8846,9 +8846,11 @@
 	tw32_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl);
 	udelay(100);
 
-	if (tg3_flag(tp, USING_MSIX) && tp->irq_cnt > 1) {
+	if (tg3_flag(tp, USING_MSIX)) {
 		val = tr32(MSGINT_MODE);
-		val |= MSGINT_MODE_MULTIVEC_EN | MSGINT_MODE_ENABLE;
+		val |= MSGINT_MODE_ENABLE;
+		if (tp->irq_cnt > 1)
+			val |= MSGINT_MODE_MULTIVEC_EN;
 		if (!tg3_flag(tp, 1SHOT_MSI))
 			val |= MSGINT_MODE_ONE_SHOT_DISABLE;
 		tw32(MSGINT_MODE, val);
@@ -9548,19 +9550,18 @@
 
 static bool tg3_enable_msix(struct tg3 *tp)
 {
-	int i, rc, cpus = num_online_cpus();
+	int i, rc;
 	struct msix_entry msix_ent[tp->irq_max];
 
-	if (cpus == 1)
-		/* Just fallback to the simpler MSI mode. */
-		return false;
-
-	/*
-	 * We want as many rx rings enabled as there are cpus.
-	 * The first MSIX vector only deals with link interrupts, etc,
-	 * so we add one to the number of vectors we are requesting.
-	 */
-	tp->irq_cnt = min_t(unsigned, cpus + 1, tp->irq_max);
+	tp->irq_cnt = num_online_cpus();
+	if (tp->irq_cnt > 1) {
+		/* We want as many rx rings enabled as there are cpus.
+		 * In multiqueue MSI-X mode, the first MSI-X vector
+		 * only deals with link interrupts, etc, so we add
+		 * one to the number of vectors we are requesting.
+		 */
+		tp->irq_cnt = min_t(unsigned, tp->irq_cnt + 1, tp->irq_max);
+	}
 
 	for (i = 0; i < tp->irq_max; i++) {
 		msix_ent[i].entry  = i;
diff --git a/drivers/net/ethernet/ibm/ehea/ehea_ethtool.c b/drivers/net/ethernet/ibm/ehea/ehea_ethtool.c
index 05b7359..6bdd8e3 100644
--- a/drivers/net/ethernet/ibm/ehea/ehea_ethtool.c
+++ b/drivers/net/ethernet/ibm/ehea/ehea_ethtool.c
@@ -263,7 +263,7 @@
 		data[i++] = atomic_read(&port->port_res[k].swqe_avail);
 }
 
-const struct ethtool_ops ehea_ethtool_ops = {
+static const struct ethtool_ops ehea_ethtool_ops = {
 	.get_settings = ehea_get_settings,
 	.get_drvinfo = ehea_get_drvinfo,
 	.get_msglevel = ehea_get_msglevel,
diff --git a/drivers/net/ethernet/ibm/ehea/ehea_main.c b/drivers/net/ethernet/ibm/ehea/ehea_main.c
index 3554414..5d5fb26 100644
--- a/drivers/net/ethernet/ibm/ehea/ehea_main.c
+++ b/drivers/net/ethernet/ibm/ehea/ehea_main.c
@@ -94,8 +94,8 @@
 static LIST_HEAD(adapter_list);
 static unsigned long ehea_driver_flags;
 static DEFINE_MUTEX(dlpar_mem_lock);
-struct ehea_fw_handle_array ehea_fw_handles;
-struct ehea_bcmc_reg_array ehea_bcmc_regs;
+static struct ehea_fw_handle_array ehea_fw_handles;
+static struct ehea_bcmc_reg_array ehea_bcmc_regs;
 
 
 static int __devinit ehea_probe_adapter(struct platform_device *dev,
@@ -133,7 +133,7 @@
 	}
 }
 
-void ehea_schedule_port_reset(struct ehea_port *port)
+static void ehea_schedule_port_reset(struct ehea_port *port)
 {
 	if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags))
 		schedule_work(&port->reset_task);
@@ -1404,7 +1404,7 @@
 	return ret;
 }
 
-int ehea_gen_smrs(struct ehea_port_res *pr)
+static int ehea_gen_smrs(struct ehea_port_res *pr)
 {
 	int ret;
 	struct ehea_adapter *adapter = pr->port->adapter;
@@ -1426,7 +1426,7 @@
 	return -EIO;
 }
 
-int ehea_rem_smrs(struct ehea_port_res *pr)
+static int ehea_rem_smrs(struct ehea_port_res *pr)
 {
 	if ((ehea_rem_mr(&pr->send_mr)) ||
 	    (ehea_rem_mr(&pr->recv_mr)))
@@ -2190,7 +2190,7 @@
 	return err;
 }
 
-int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
+static int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
 {
 	int ret = -EIO;
 	u64 hret;
@@ -2531,7 +2531,7 @@
 	}
 }
 
-int ehea_stop_qps(struct net_device *dev)
+static int ehea_stop_qps(struct net_device *dev)
 {
 	struct ehea_port *port = netdev_priv(dev);
 	struct ehea_adapter *adapter = port->adapter;
@@ -2600,7 +2600,7 @@
 	return ret;
 }
 
-void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
+static void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
 {
 	struct ehea_qp qp = *orig_qp;
 	struct ehea_qp_init_attr *init_attr = &qp.init_attr;
@@ -2633,7 +2633,7 @@
 	}
 }
 
-int ehea_restart_qps(struct net_device *dev)
+static int ehea_restart_qps(struct net_device *dev)
 {
 	struct ehea_port *port = netdev_priv(dev);
 	struct ehea_adapter *adapter = port->adapter;
@@ -2824,7 +2824,7 @@
 		ehea_schedule_port_reset(port);
 }
 
-int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
+static int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
 {
 	struct hcp_query_ehea *cb;
 	u64 hret;
@@ -2852,7 +2852,7 @@
 	return ret;
 }
 
-int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
+static int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
 {
 	struct hcp_ehea_port_cb4 *cb4;
 	u64 hret;
@@ -2966,7 +2966,7 @@
 	.ndo_tx_timeout		= ehea_tx_watchdog,
 };
 
-struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
+static struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
 					 u32 logical_port_id,
 					 struct device_node *dn)
 {
@@ -3237,7 +3237,7 @@
 static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
 static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
 
-int ehea_create_device_sysfs(struct platform_device *dev)
+static int ehea_create_device_sysfs(struct platform_device *dev)
 {
 	int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
 	if (ret)
@@ -3248,7 +3248,7 @@
 	return ret;
 }
 
-void ehea_remove_device_sysfs(struct platform_device *dev)
+static void ehea_remove_device_sysfs(struct platform_device *dev)
 {
 	device_remove_file(&dev->dev, &dev_attr_probe_port);
 	device_remove_file(&dev->dev, &dev_attr_remove_port);
@@ -3379,7 +3379,7 @@
 	return 0;
 }
 
-void ehea_crash_handler(void)
+static void ehea_crash_handler(void)
 {
 	int i;
 
@@ -3491,7 +3491,7 @@
 static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
 		   ehea_show_capabilities, NULL);
 
-int __init ehea_module_init(void)
+static int __init ehea_module_init(void)
 {
 	int ret;
 
diff --git a/drivers/net/ethernet/ibm/ehea/ehea_qmr.c b/drivers/net/ethernet/ibm/ehea/ehea_qmr.c
index 95b9f4f..c25b05b 100644
--- a/drivers/net/ethernet/ibm/ehea/ehea_qmr.c
+++ b/drivers/net/ethernet/ibm/ehea/ehea_qmr.c
@@ -34,9 +34,7 @@
 #include "ehea_phyp.h"
 #include "ehea_qmr.h"
 
-struct ehea_bmap *ehea_bmap = NULL;
-
-
+static struct ehea_bmap *ehea_bmap;
 
 static void *hw_qpageit_get_inc(struct hw_queue *queue)
 {
@@ -212,7 +210,7 @@
 	return NULL;
 }
 
-u64 ehea_destroy_cq_res(struct ehea_cq *cq, u64 force)
+static u64 ehea_destroy_cq_res(struct ehea_cq *cq, u64 force)
 {
 	u64 hret;
 	u64 adapter_handle = cq->adapter->handle;
@@ -337,7 +335,7 @@
 	return eqe;
 }
 
-u64 ehea_destroy_eq_res(struct ehea_eq *eq, u64 force)
+static u64 ehea_destroy_eq_res(struct ehea_eq *eq, u64 force)
 {
 	u64 hret;
 	unsigned long flags;
@@ -381,7 +379,7 @@
 /**
  * allocates memory for a queue and registers pages in phyp
  */
-int ehea_qp_alloc_register(struct ehea_qp *qp, struct hw_queue *hw_queue,
+static int ehea_qp_alloc_register(struct ehea_qp *qp, struct hw_queue *hw_queue,
 			   int nr_pages, int wqe_size, int act_nr_sges,
 			   struct ehea_adapter *adapter, int h_call_q_selector)
 {
@@ -516,7 +514,7 @@
 	return NULL;
 }
 
-u64 ehea_destroy_qp_res(struct ehea_qp *qp, u64 force)
+static u64 ehea_destroy_qp_res(struct ehea_qp *qp, u64 force)
 {
 	u64 hret;
 	struct ehea_qp_init_attr *qp_attr = &qp->init_attr;
@@ -976,7 +974,7 @@
 	return 0;
 }
 
-void print_error_data(u64 *data)
+static void print_error_data(u64 *data)
 {
 	int length;
 	u64 type = EHEA_BMASK_GET(ERROR_DATA_TYPE, data[2]);
diff --git a/drivers/net/ethernet/micrel/ks8842.c b/drivers/net/ethernet/micrel/ks8842.c
index 75ec87a..0a85690 100644
--- a/drivers/net/ethernet/micrel/ks8842.c
+++ b/drivers/net/ethernet/micrel/ks8842.c
@@ -459,7 +459,7 @@
 		sg_dma_len(&ctl->sg) += 4 - sg_dma_len(&ctl->sg) % 4;
 
 	ctl->adesc = ctl->chan->device->device_prep_slave_sg(ctl->chan,
-		&ctl->sg, 1, DMA_TO_DEVICE,
+		&ctl->sg, 1, DMA_MEM_TO_DEV,
 		DMA_PREP_INTERRUPT | DMA_COMPL_SKIP_SRC_UNMAP);
 	if (!ctl->adesc)
 		return NETDEV_TX_BUSY;
@@ -571,7 +571,7 @@
 		sg_dma_len(sg) = DMA_BUFFER_SIZE;
 
 		ctl->adesc = ctl->chan->device->device_prep_slave_sg(ctl->chan,
-			sg, 1, DMA_FROM_DEVICE,
+			sg, 1, DMA_DEV_TO_MEM,
 			DMA_PREP_INTERRUPT | DMA_COMPL_SKIP_SRC_UNMAP);
 
 		if (!ctl->adesc)
diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c
index 6ece429..813d41c 100644
--- a/drivers/net/ethernet/renesas/sh_eth.c
+++ b/drivers/net/ethernet/renesas/sh_eth.c
@@ -1703,7 +1703,7 @@
 	mdp->mii_bus->name = "sh_mii";
 	mdp->mii_bus->parent = &ndev->dev;
 	snprintf(mdp->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x",
-		mdp->pdev->name, pdid);
+		mdp->pdev->name, id);
 
 	/* PHY IRQ */
 	mdp->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mac.c b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
index 88c81c5..09b8c9d 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
@@ -557,10 +557,11 @@
 			rxs->rs_status |= ATH9K_RXERR_DECRYPT;
 		else if (rxsp->status11 & AR_MichaelErr)
 			rxs->rs_status |= ATH9K_RXERR_MIC;
-		if (rxsp->status11 & AR_KeyMiss)
-			rxs->rs_status |= ATH9K_RXERR_KEYMISS;
 	}
 
+	if (rxsp->status11 & AR_KeyMiss)
+		rxs->rs_status |= ATH9K_RXERR_KEYMISS;
+
 	return 0;
 }
 EXPORT_SYMBOL(ath9k_hw_process_rxdesc_edma);
diff --git a/drivers/net/wireless/ath/ath9k/mac.c b/drivers/net/wireless/ath/ath9k/mac.c
index fd3f19c..e196aba 100644
--- a/drivers/net/wireless/ath/ath9k/mac.c
+++ b/drivers/net/wireless/ath/ath9k/mac.c
@@ -618,10 +618,11 @@
 			rs->rs_status |= ATH9K_RXERR_DECRYPT;
 		else if (ads.ds_rxstatus8 & AR_MichaelErr)
 			rs->rs_status |= ATH9K_RXERR_MIC;
-		if (ads.ds_rxstatus8 & AR_KeyMiss)
-			rs->rs_status |= ATH9K_RXERR_KEYMISS;
 	}
 
+	if (ads.ds_rxstatus8 & AR_KeyMiss)
+		rs->rs_status |= ATH9K_RXERR_KEYMISS;
+
 	return 0;
 }
 EXPORT_SYMBOL(ath9k_hw_rxprocdesc);
diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index 1c6f193..b91f28e 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -4852,6 +4852,9 @@
 
 	cancel_work_sync(&(wl->beacon_update_trigger));
 
+	if (!dev)
+		goto out;
+
 	mutex_lock(&wl->mutex);
 	if (b43_status(dev) >= B43_STAT_STARTED) {
 		dev = b43_wireless_core_stop(dev);
@@ -4863,7 +4866,7 @@
 
 out_unlock:
 	mutex_unlock(&wl->mutex);
-
+out:
 	cancel_work_sync(&(wl->txpower_adjust_work));
 }
 
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
index f23b0c3..bf11850 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
@@ -2475,7 +2475,7 @@
 	return err;
 }
 
-static void brcmf_delay(u32 ms)
+static __always_inline void brcmf_delay(u32 ms)
 {
 	if (ms < 1000 / HZ) {
 		cond_resched();
diff --git a/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c b/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
index d106576..448ab9c 100644
--- a/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
+++ b/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
@@ -1128,14 +1128,7 @@
 	return 0;
 }
 
-static int brcms_pci_suspend(struct pci_dev *pdev)
-{
-	pci_save_state(pdev);
-	pci_disable_device(pdev);
-	return pci_set_power_state(pdev, PCI_D3hot);
-}
-
-static int brcms_suspend(struct bcma_device *pdev, pm_message_t state)
+static int brcms_suspend(struct bcma_device *pdev)
 {
 	struct brcms_info *wl;
 	struct ieee80211_hw *hw;
@@ -1153,40 +1146,15 @@
 	wl->pub->hw_up = false;
 	spin_unlock_bh(&wl->lock);
 
-	/* temporarily do suspend ourselves */
-	return brcms_pci_suspend(pdev->bus->host_pci);
-}
-
-static int brcms_pci_resume(struct pci_dev *pdev)
-{
-	int err = 0;
-	uint val;
-
-	err = pci_set_power_state(pdev, PCI_D0);
-	if (err)
-		return err;
-
-	pci_restore_state(pdev);
-
-	err = pci_enable_device(pdev);
-	if (err)
-		return err;
-
-	pci_set_master(pdev);
-
-	pci_read_config_dword(pdev, 0x40, &val);
-	if ((val & 0x0000ff00) != 0)
-		pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
+	pr_debug("brcms_suspend ok\n");
 
 	return 0;
 }
 
 static int brcms_resume(struct bcma_device *pdev)
 {
-	/*
-	*  just do pci resume for now until bcma supports it.
-	*/
-	return brcms_pci_resume(pdev->bus->host_pci);
+	pr_debug("brcms_resume ok\n");
+	return 0;
 }
 
 static struct bcma_driver brcms_bcma_driver = {
diff --git a/drivers/net/wireless/ipw2x00/ipw2200.c b/drivers/net/wireless/ipw2x00/ipw2200.c
index 018a8de..4fcdac6 100644
--- a/drivers/net/wireless/ipw2x00/ipw2200.c
+++ b/drivers/net/wireless/ipw2x00/ipw2200.c
@@ -7848,7 +7848,7 @@
 	 * more efficiently than we can parse it. ORDER MATTERS HERE */
 	struct ipw_rt_hdr *ipw_rt;
 
-	short len = le16_to_cpu(pkt->u.frame.length);
+	unsigned short len = le16_to_cpu(pkt->u.frame.length);
 
 	/* We received data from the HW, so stop the watchdog */
 	dev->trans_start = jiffies;
@@ -8023,7 +8023,7 @@
 	s8 signal = frame->rssi_dbm - IPW_RSSI_TO_DBM;
 	s8 noise = (s8) le16_to_cpu(frame->noise);
 	u8 rate = frame->rate;
-	short len = le16_to_cpu(pkt->u.frame.length);
+	unsigned short len = le16_to_cpu(pkt->u.frame.length);
 	struct sk_buff *skb;
 	int hdr_only = 0;
 	u16 filter = priv->prom_priv->filter;
diff --git a/drivers/net/wireless/iwlwifi/iwl-scan.c b/drivers/net/wireless/iwlwifi/iwl-scan.c
index 084aa2c..a645472 100644
--- a/drivers/net/wireless/iwlwifi/iwl-scan.c
+++ b/drivers/net/wireless/iwlwifi/iwl-scan.c
@@ -569,7 +569,7 @@
 	struct iwl_scan_cmd *scan;
 	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 	u32 rate_flags = 0;
-	u16 cmd_len;
+	u16 cmd_len = 0;
 	u16 rx_chain = 0;
 	enum ieee80211_band band;
 	u8 n_probes = 0;
diff --git a/drivers/net/wireless/mwl8k.c b/drivers/net/wireless/mwl8k.c
index 7becea3..dd5aeaf 100644
--- a/drivers/net/wireless/mwl8k.c
+++ b/drivers/net/wireless/mwl8k.c
@@ -2777,7 +2777,7 @@
 	else if (channel->band == IEEE80211_BAND_5GHZ)
 		cmd->band = cpu_to_le16(0x4);
 
-	cmd->channel = channel->hw_value;
+	cmd->channel = cpu_to_le16(channel->hw_value);
 
 	if (conf->channel_type == NL80211_CHAN_NO_HT ||
 	    conf->channel_type == NL80211_CHAN_HT20) {
@@ -4066,7 +4066,7 @@
 		goto done;
 
 	if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
-			WLAN_CIPHER_SUITE_WEP104)
+			key->cipher == WLAN_CIPHER_SUITE_WEP104)
 		mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
 
 	cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c
index 4941a1a..dc88bae 100644
--- a/drivers/net/wireless/rt2x00/rt2800pci.c
+++ b/drivers/net/wireless/rt2x00/rt2800pci.c
@@ -422,7 +422,6 @@
 static void rt2800pci_toggle_irq(struct rt2x00_dev *rt2x00dev,
 				 enum dev_state state)
 {
-	int mask = (state == STATE_RADIO_IRQ_ON);
 	u32 reg;
 	unsigned long flags;
 
@@ -436,25 +435,14 @@
 	}
 
 	spin_lock_irqsave(&rt2x00dev->irqmask_lock, flags);
-	rt2x00pci_register_read(rt2x00dev, INT_MASK_CSR, &reg);
-	rt2x00_set_field32(&reg, INT_MASK_CSR_RXDELAYINT, 0);
-	rt2x00_set_field32(&reg, INT_MASK_CSR_TXDELAYINT, 0);
-	rt2x00_set_field32(&reg, INT_MASK_CSR_RX_DONE, mask);
-	rt2x00_set_field32(&reg, INT_MASK_CSR_AC0_DMA_DONE, 0);
-	rt2x00_set_field32(&reg, INT_MASK_CSR_AC1_DMA_DONE, 0);
-	rt2x00_set_field32(&reg, INT_MASK_CSR_AC2_DMA_DONE, 0);
-	rt2x00_set_field32(&reg, INT_MASK_CSR_AC3_DMA_DONE, 0);
-	rt2x00_set_field32(&reg, INT_MASK_CSR_HCCA_DMA_DONE, 0);
-	rt2x00_set_field32(&reg, INT_MASK_CSR_MGMT_DMA_DONE, 0);
-	rt2x00_set_field32(&reg, INT_MASK_CSR_MCU_COMMAND, 0);
-	rt2x00_set_field32(&reg, INT_MASK_CSR_RXTX_COHERENT, 0);
-	rt2x00_set_field32(&reg, INT_MASK_CSR_TBTT, mask);
-	rt2x00_set_field32(&reg, INT_MASK_CSR_PRE_TBTT, mask);
-	rt2x00_set_field32(&reg, INT_MASK_CSR_TX_FIFO_STATUS, mask);
-	rt2x00_set_field32(&reg, INT_MASK_CSR_AUTO_WAKEUP, mask);
-	rt2x00_set_field32(&reg, INT_MASK_CSR_GPTIMER, 0);
-	rt2x00_set_field32(&reg, INT_MASK_CSR_RX_COHERENT, 0);
-	rt2x00_set_field32(&reg, INT_MASK_CSR_TX_COHERENT, 0);
+	reg = 0;
+	if (state == STATE_RADIO_IRQ_ON) {
+		rt2x00_set_field32(&reg, INT_MASK_CSR_RX_DONE, 1);
+		rt2x00_set_field32(&reg, INT_MASK_CSR_TBTT, 1);
+		rt2x00_set_field32(&reg, INT_MASK_CSR_PRE_TBTT, 1);
+		rt2x00_set_field32(&reg, INT_MASK_CSR_TX_FIFO_STATUS, 1);
+		rt2x00_set_field32(&reg, INT_MASK_CSR_AUTO_WAKEUP, 1);
+	}
 	rt2x00pci_register_write(rt2x00dev, INT_MASK_CSR, reg);
 	spin_unlock_irqrestore(&rt2x00dev->irqmask_lock, flags);
 
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index 06ea3bc..16570aa 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -830,16 +830,11 @@
 	tristate "Intel(R) C600 Series Chipset SAS Controller"
 	depends on PCI && SCSI
 	depends on X86
-	# (temporary): known alpha quality driver
-	depends on EXPERIMENTAL
 	select SCSI_SAS_LIBSAS
-	select SCSI_SAS_HOST_SMP
 	---help---
 	  This driver supports the 6Gb/s SAS capabilities of the storage
 	  control unit found in the Intel(R) C600 series chipset.
 
-	  The experimental tag will be removed after the driver exits alpha
-
 config SCSI_GENERIC_NCR5380
 	tristate "Generic NCR5380/53c400 SCSI PIO support"
 	depends on ISA && SCSI
diff --git a/drivers/scsi/bfa/bfa_defs_svc.h b/drivers/scsi/bfa/bfa_defs_svc.h
index 78963be..cb07c62 100644
--- a/drivers/scsi/bfa/bfa_defs_svc.h
+++ b/drivers/scsi/bfa/bfa_defs_svc.h
@@ -673,12 +673,7 @@
 	u32	tm_iocdowns;		/*  TM cleaned-up due to IOC down   */
 	u32	tm_cleanups;		/*  TM cleanup requests	*/
 	u32	tm_cleanup_comps;	/*  TM cleanup completions	*/
-	u32	lm_lun_across_sg;	/*  LM lun is across sg data buf */
-	u32	lm_lun_not_sup;		/*  LM lun not supported */
-	u32	lm_rpl_data_changed;	/*  LM report-lun data changed */
-	u32	lm_wire_residue_changed; /* LM report-lun rsp residue changed */
-	u32	lm_small_buf_addresidue; /* LM buf smaller than reported cnt */
-	u32	lm_lun_not_rdy;		/* LM lun not ready */
+	u32	rsvd[6];
 };
 
 /* Modify char* port_stt[] in bfal_port.c if a new state was added */
diff --git a/drivers/scsi/bfa/bfa_fc.h b/drivers/scsi/bfa/bfa_fc.h
index 50b6a1c..8d0b88f 100644
--- a/drivers/scsi/bfa/bfa_fc.h
+++ b/drivers/scsi/bfa/bfa_fc.h
@@ -56,161 +56,6 @@
 
 #define SCSI_MAX_ALLOC_LEN      0xFF    /* maximum allocarion length */
 
-#define SCSI_SENSE_CUR_ERR	0x70
-#define SCSI_SENSE_DEF_ERR	0x71
-
-/*
- * SCSI additional sense codes
- */
-#define SCSI_ASC_LUN_NOT_READY		0x04
-#define SCSI_ASC_LUN_NOT_SUPPORTED	0x25
-#define SCSI_ASC_TOCC			0x3F
-
-/*
- * SCSI additional sense code qualifiers
- */
-#define SCSI_ASCQ_MAN_INTR_REQ		0x03	/* manual intervention req */
-#define SCSI_ASCQ_RL_DATA_CHANGED	0x0E	/* report luns data changed */
-
-/*
- * Methods of reporting informational exceptions
- */
-#define SCSI_MP_IEC_UNIT_ATTN		0x2	/* generate unit attention */
-
-struct scsi_report_luns_data_s {
-	u32		lun_list_length;	/* length of LUN list length */
-	u32		reserved;
-	struct scsi_lun	lun[1];			/* first LUN in lun list */
-};
-
-struct scsi_inquiry_vendor_s {
-	u8	vendor_id[8];
-};
-
-struct scsi_inquiry_prodid_s {
-	u8	product_id[16];
-};
-
-struct scsi_inquiry_prodrev_s {
-	u8	product_rev[4];
-};
-
-struct scsi_inquiry_data_s {
-#ifdef __BIG_ENDIAN
-	u8		peripheral_qual:3;	/* peripheral qualifier */
-	u8		device_type:5;		/* peripheral device type */
-	u8		rmb:1;			/* removable medium bit */
-	u8		device_type_mod:7;	/* device type modifier */
-	u8		version;
-	u8		aenc:1;		/* async evt notification capability */
-	u8		trm_iop:1;	/* terminate I/O process */
-	u8		norm_aca:1;	/* normal ACA supported */
-	u8		hi_support:1;	/* SCSI-3: supports REPORT LUNS */
-	u8		rsp_data_format:4;
-	u8		additional_len;
-	u8		sccs:1;
-	u8		reserved1:7;
-	u8		reserved2:1;
-	u8		enc_serv:1;	/* enclosure service component */
-	u8		reserved3:1;
-	u8		multi_port:1;	/* multi-port device */
-	u8		m_chngr:1;	/* device in medium transport element */
-	u8		ack_req_q:1;	/* SIP specific bit */
-	u8		addr32:1;	/* SIP specific bit */
-	u8		addr16:1;	/* SIP specific bit */
-	u8		rel_adr:1;	/* relative address */
-	u8		w_bus32:1;
-	u8		w_bus16:1;
-	u8		synchronous:1;
-	u8		linked_commands:1;
-	u8		trans_dis:1;
-	u8		cmd_queue:1;	/* command queueing supported */
-	u8		soft_reset:1;	/* soft reset alternative (VS) */
-#else
-	u8		device_type:5;	/* peripheral device type */
-	u8		peripheral_qual:3; /* peripheral qualifier */
-	u8		device_type_mod:7; /* device type modifier */
-	u8		rmb:1;		/* removable medium bit */
-	u8		version;
-	u8		rsp_data_format:4;
-	u8		hi_support:1;	/* SCSI-3: supports REPORT LUNS */
-	u8		norm_aca:1;	/* normal ACA supported */
-	u8		terminate_iop:1;/* terminate I/O process */
-	u8		aenc:1;		/* async evt notification capability */
-	u8		additional_len;
-	u8		reserved1:7;
-	u8		sccs:1;
-	u8		addr16:1;	/* SIP specific bit */
-	u8		addr32:1;	/* SIP specific bit */
-	u8		ack_req_q:1;	/* SIP specific bit */
-	u8		m_chngr:1;	/* device in medium transport element */
-	u8		multi_port:1;	/* multi-port device */
-	u8		reserved3:1;	/* TBD - Vendor Specific */
-	u8		enc_serv:1;	/* enclosure service component */
-	u8		reserved2:1;
-	u8		soft_seset:1;	/* soft reset alternative (VS) */
-	u8		cmd_queue:1;	/* command queueing supported */
-	u8		trans_dis:1;
-	u8		linked_commands:1;
-	u8		synchronous:1;
-	u8		w_bus16:1;
-	u8		w_bus32:1;
-	u8		rel_adr:1;	/* relative address */
-#endif
-	struct scsi_inquiry_vendor_s	vendor_id;
-	struct scsi_inquiry_prodid_s	product_id;
-	struct scsi_inquiry_prodrev_s	product_rev;
-	u8		vendor_specific[20];
-	u8		reserved4[40];
-};
-
-/*
- *	SCSI sense data format
- */
-struct scsi_sense_s {
-#ifdef __BIG_ENDIAN
-	u8		valid:1;
-	u8		rsp_code:7;
-#else
-	u8		rsp_code:7;
-	u8		valid:1;
-#endif
-	u8		seg_num;
-#ifdef __BIG_ENDIAN
-	u8		file_mark:1;
-	u8		eom:1;		/* end of media */
-	u8		ili:1;		/* incorrect length indicator */
-	u8		reserved:1;
-	u8		sense_key:4;
-#else
-	u8		sense_key:4;
-	u8		reserved:1;
-	u8		ili:1;		/* incorrect length indicator */
-	u8		eom:1;		/* end of media */
-	u8		file_mark:1;
-#endif
-	u8		information[4];	/* device-type or cmd specific info */
-	u8		add_sense_length; /* additional sense length */
-	u8		command_info[4];/* command specific information */
-	u8		asc;		/* additional sense code */
-	u8		ascq;		/* additional sense code qualifier */
-	u8		fru_code;	/* field replaceable unit code */
-#ifdef __BIG_ENDIAN
-	u8		sksv:1;		/* sense key specific valid */
-	u8		c_d:1;		/* command/data bit */
-	u8		res1:2;
-	u8		bpv:1;		/* bit pointer valid */
-	u8		bpointer:3;	/* bit pointer */
-#else
-	u8		bpointer:3;	/* bit pointer */
-	u8		bpv:1;		/* bit pointer valid */
-	u8		res1:2;
-	u8		c_d:1;		/* command/data bit */
-	u8		sksv:1;		/* sense key specific valid */
-#endif
-	u8		fpointer[2];	/* field pointer */
-};
-
 /*
  * Fibre Channel Header Structure (FCHS) definition
  */
diff --git a/drivers/scsi/bfa/bfa_fcpim.c b/drivers/scsi/bfa/bfa_fcpim.c
index e07bd47..f0f80e2 100644
--- a/drivers/scsi/bfa/bfa_fcpim.c
+++ b/drivers/scsi/bfa/bfa_fcpim.c
@@ -24,8 +24,6 @@
  *  BFA ITNIM Related definitions
  */
 static void bfa_itnim_update_del_itn_stats(struct bfa_itnim_s *itnim);
-static bfa_boolean_t bfa_ioim_lm_proc_rpl_data(struct bfa_ioim_s *ioim);
-static bfa_boolean_t bfa_ioim_lm_proc_inq_data(struct bfa_ioim_s *ioim);
 static void bfa_ioim_lm_init(struct bfa_s *bfa);
 
 #define BFA_ITNIM_FROM_TAG(_fcpim, _tag)                                \
@@ -60,14 +58,6 @@
 	}								\
 } while (0)
 
-#define bfa_ioim_rp_wwn(__ioim)						\
-	(((struct bfa_fcs_rport_s *)					\
-	 (__ioim)->itnim->rport->rport_drv)->pwwn)
-
-#define bfa_ioim_lp_wwn(__ioim)						\
-	((BFA_LPS_FROM_TAG(BFA_LPS_MOD((__ioim)->bfa),			\
-	(__ioim)->itnim->rport->rport_info.lp_tag))->pwwn)		\
-
 #define bfa_itnim_sler_cb(__itnim) do {					\
 	if ((__itnim)->bfa->fcs)					\
 		bfa_cb_itnim_sler((__itnim)->ditn);      \
@@ -77,13 +67,6 @@
 	}								\
 } while (0)
 
-enum bfa_ioim_lm_status {
-	BFA_IOIM_LM_PRESENT = 1,
-	BFA_IOIM_LM_LUN_NOT_SUP = 2,
-	BFA_IOIM_LM_RPL_DATA_CHANGED = 3,
-	BFA_IOIM_LM_LUN_NOT_RDY = 4,
-};
-
 enum bfa_ioim_lm_ua_status {
 	BFA_IOIM_LM_UA_RESET = 0,
 	BFA_IOIM_LM_UA_SET = 1,
@@ -145,9 +128,6 @@
 	BFA_IOIM_SM_TMDONE	= 16,	/*  IO cleanup from tskim */
 	BFA_IOIM_SM_HWFAIL	= 17,	/*  IOC h/w failure event */
 	BFA_IOIM_SM_IOTOV	= 18,	/*  ITN offline TOV */
-	BFA_IOIM_SM_LM_LUN_NOT_SUP = 19,/*  lunmask lun not supported */
-	BFA_IOIM_SM_LM_RPL_DC = 20,	/*  lunmask report-lun data changed */
-	BFA_IOIM_SM_LM_LUN_NOT_RDY = 21,/*  lunmask lun not ready */
 };
 
 
@@ -245,9 +225,6 @@
 static void __bfa_cb_ioim_failed(void *cbarg, bfa_boolean_t complete);
 static void __bfa_cb_ioim_pathtov(void *cbarg, bfa_boolean_t complete);
 static bfa_boolean_t    bfa_ioim_is_abortable(struct bfa_ioim_s *ioim);
-static void __bfa_cb_ioim_lm_lun_not_sup(void *cbarg, bfa_boolean_t complete);
-static void __bfa_cb_ioim_lm_rpl_dc(void *cbarg, bfa_boolean_t complete);
-static void __bfa_cb_ioim_lm_lun_not_rdy(void *cbarg, bfa_boolean_t complete);
 
 /*
  * forward declaration of BFA IO state machine
@@ -445,12 +422,6 @@
 	bfa_fcpim_add_iostats(lstats, rstats, output_reqs);
 	bfa_fcpim_add_iostats(lstats, rstats, rd_throughput);
 	bfa_fcpim_add_iostats(lstats, rstats, wr_throughput);
-	bfa_fcpim_add_iostats(lstats, rstats, lm_lun_across_sg);
-	bfa_fcpim_add_iostats(lstats, rstats, lm_lun_not_sup);
-	bfa_fcpim_add_iostats(lstats, rstats, lm_rpl_data_changed);
-	bfa_fcpim_add_iostats(lstats, rstats, lm_wire_residue_changed);
-	bfa_fcpim_add_iostats(lstats, rstats, lm_small_buf_addresidue);
-	bfa_fcpim_add_iostats(lstats, rstats, lm_lun_not_rdy);
 }
 
 bfa_status_t
@@ -1580,27 +1551,6 @@
 			__bfa_cb_ioim_abort, ioim);
 		break;
 
-	case BFA_IOIM_SM_LM_LUN_NOT_SUP:
-		bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
-		bfa_ioim_move_to_comp_q(ioim);
-		bfa_cb_queue(ioim->bfa, &ioim->hcb_qe,
-			__bfa_cb_ioim_lm_lun_not_sup, ioim);
-		break;
-
-	case BFA_IOIM_SM_LM_RPL_DC:
-		bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
-		bfa_ioim_move_to_comp_q(ioim);
-		bfa_cb_queue(ioim->bfa, &ioim->hcb_qe,
-				__bfa_cb_ioim_lm_rpl_dc, ioim);
-		break;
-
-	case BFA_IOIM_SM_LM_LUN_NOT_RDY:
-		bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
-		bfa_ioim_move_to_comp_q(ioim);
-		bfa_cb_queue(ioim->bfa, &ioim->hcb_qe,
-			__bfa_cb_ioim_lm_lun_not_rdy, ioim);
-		break;
-
 	default:
 		bfa_sm_fault(ioim->bfa, event);
 	}
@@ -2160,243 +2110,6 @@
 	}
 }
 
-/*
- * Validate LUN for LUN masking
- */
-static enum bfa_ioim_lm_status
-bfa_ioim_lm_check(struct bfa_ioim_s *ioim, struct bfa_lps_s *lps,
-		struct bfa_rport_s *rp, struct scsi_lun lun)
-{
-	u8 i;
-	struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(ioim->bfa);
-	struct scsi_cmnd *cmnd = (struct scsi_cmnd *)ioim->dio;
-	struct scsi_cdb_s *cdb = (struct scsi_cdb_s *)cmnd->cmnd;
-
-	if ((cdb->scsi_cdb[0] == REPORT_LUNS) &&
-	    (scsilun_to_int((struct scsi_lun *)&lun) == 0)) {
-		ioim->proc_rsp_data = bfa_ioim_lm_proc_rpl_data;
-		return BFA_IOIM_LM_PRESENT;
-	}
-
-	for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
-
-		if (lun_list[i].state != BFA_IOIM_LUN_MASK_ACTIVE)
-			continue;
-
-		if ((scsilun_to_int((struct scsi_lun *)&lun_list[i].lun) ==
-		    scsilun_to_int((struct scsi_lun *)&lun))
-		    && (rp->rport_tag == lun_list[i].rp_tag)
-		    && ((u8)ioim->itnim->rport->rport_info.lp_tag ==
-						lun_list[i].lp_tag)) {
-			bfa_trc(ioim->bfa, lun_list[i].rp_tag);
-			bfa_trc(ioim->bfa, lun_list[i].lp_tag);
-			bfa_trc(ioim->bfa, scsilun_to_int(
-				(struct scsi_lun *)&lun_list[i].lun));
-
-			if ((lun_list[i].ua == BFA_IOIM_LM_UA_SET) &&
-			    ((cdb->scsi_cdb[0] != INQUIRY) ||
-			    (cdb->scsi_cdb[0] != REPORT_LUNS))) {
-				lun_list[i].ua = BFA_IOIM_LM_UA_RESET;
-				return BFA_IOIM_LM_RPL_DATA_CHANGED;
-			}
-
-			if (cdb->scsi_cdb[0] == REPORT_LUNS)
-				ioim->proc_rsp_data = bfa_ioim_lm_proc_rpl_data;
-
-			return BFA_IOIM_LM_PRESENT;
-		}
-	}
-
-	if ((cdb->scsi_cdb[0] == INQUIRY) &&
-	    (scsilun_to_int((struct scsi_lun *)&lun) == 0)) {
-		ioim->proc_rsp_data = bfa_ioim_lm_proc_inq_data;
-		return BFA_IOIM_LM_PRESENT;
-	}
-
-	if (cdb->scsi_cdb[0] == TEST_UNIT_READY)
-		return BFA_IOIM_LM_LUN_NOT_RDY;
-
-	return BFA_IOIM_LM_LUN_NOT_SUP;
-}
-
-static bfa_boolean_t
-bfa_ioim_lm_proc_rsp_data_dummy(struct bfa_ioim_s *ioim)
-{
-	return BFA_TRUE;
-}
-
-static void
-bfa_ioim_lm_fetch_lun(struct bfa_ioim_s *ioim, u8 *rl_data, int offset,
-		int buf_lun_cnt)
-{
-	struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(ioim->bfa);
-	struct scsi_lun *lun_data = (struct scsi_lun *)(rl_data + offset);
-	struct scsi_lun lun;
-	int i, j;
-
-	bfa_trc(ioim->bfa, buf_lun_cnt);
-	for (j = 0; j < buf_lun_cnt; j++) {
-		lun = *((struct scsi_lun *)(lun_data + j));
-		for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
-			if (lun_list[i].state != BFA_IOIM_LUN_MASK_ACTIVE)
-				continue;
-			if ((lun_list[i].rp_wwn == bfa_ioim_rp_wwn(ioim)) &&
-			    (lun_list[i].lp_wwn == bfa_ioim_lp_wwn(ioim)) &&
-			    (scsilun_to_int((struct scsi_lun *)&lun_list[i].lun)
-				== scsilun_to_int((struct scsi_lun *)&lun))) {
-				lun_list[i].state = BFA_IOIM_LUN_MASK_FETCHED;
-				break;
-			}
-		} /* next lun in mask DB */
-	} /* next lun in buf */
-}
-
-static int
-bfa_ioim_lm_update_lun_sg(struct bfa_ioim_s *ioim, u32 *pgdlen,
-		struct scsi_report_luns_data_s *rl)
-{
-	struct scsi_cmnd *cmnd = (struct scsi_cmnd *)ioim->dio;
-	struct scatterlist *sg = scsi_sglist(cmnd);
-	struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(ioim->bfa);
-	struct scsi_lun *prev_rl_data = NULL, *base_rl_data;
-	int i, j, sgeid, lun_fetched_cnt = 0, prev_sg_len = 0, base_count;
-	int lun_across_sg_bytes, bytes_from_next_buf;
-	u64	last_lun, temp_last_lun;
-
-	/* fetch luns from the first sg element */
-	bfa_ioim_lm_fetch_lun(ioim, (u8 *)(rl->lun), 0,
-			(sg_dma_len(sg) / sizeof(struct scsi_lun)) - 1);
-
-	/* fetch luns from multiple sg elements */
-	scsi_for_each_sg(cmnd, sg, scsi_sg_count(cmnd), sgeid) {
-		if (sgeid == 0) {
-			prev_sg_len = sg_dma_len(sg);
-			prev_rl_data = (struct scsi_lun *)
-					phys_to_virt(sg_dma_address(sg));
-			continue;
-		}
-
-		/* if the buf is having more data */
-		lun_across_sg_bytes = prev_sg_len % sizeof(struct scsi_lun);
-		if (lun_across_sg_bytes) {
-			bfa_trc(ioim->bfa, lun_across_sg_bytes);
-			bfa_stats(ioim->itnim, lm_lun_across_sg);
-			bytes_from_next_buf = sizeof(struct scsi_lun) -
-					      lun_across_sg_bytes;
-
-			/* from next buf take higher bytes */
-			temp_last_lun = *((u64 *)
-					  phys_to_virt(sg_dma_address(sg)));
-			last_lun |= temp_last_lun >>
-				    (lun_across_sg_bytes * BITS_PER_BYTE);
-
-			/* from prev buf take higher bytes */
-			temp_last_lun = *((u64 *)(prev_rl_data +
-					  (prev_sg_len - lun_across_sg_bytes)));
-			temp_last_lun >>= bytes_from_next_buf * BITS_PER_BYTE;
-			last_lun = last_lun | (temp_last_lun <<
-				   (bytes_from_next_buf * BITS_PER_BYTE));
-
-			bfa_ioim_lm_fetch_lun(ioim, (u8 *)&last_lun, 0, 1);
-		} else
-			bytes_from_next_buf = 0;
-
-		*pgdlen += sg_dma_len(sg);
-		prev_sg_len = sg_dma_len(sg);
-		prev_rl_data = (struct scsi_lun *)
-				phys_to_virt(sg_dma_address(sg));
-		bfa_ioim_lm_fetch_lun(ioim, (u8 *)prev_rl_data,
-				bytes_from_next_buf,
-				sg_dma_len(sg) / sizeof(struct scsi_lun));
-	}
-
-	/* update the report luns data - based on fetched luns */
-	sg = scsi_sglist(cmnd);
-	base_rl_data = (struct scsi_lun *)rl->lun;
-	base_count = (sg_dma_len(sg) / sizeof(struct scsi_lun)) - 1;
-	for (i = 0, j = 0; i < MAX_LUN_MASK_CFG; i++) {
-		if (lun_list[i].state == BFA_IOIM_LUN_MASK_FETCHED) {
-			base_rl_data[j] = lun_list[i].lun;
-			lun_list[i].state = BFA_IOIM_LUN_MASK_ACTIVE;
-			j++;
-			lun_fetched_cnt++;
-		}
-
-		if (j > base_count) {
-			j = 0;
-			sg = sg_next(sg);
-			base_rl_data = (struct scsi_lun *)
-					phys_to_virt(sg_dma_address(sg));
-			base_count = sg_dma_len(sg) / sizeof(struct scsi_lun);
-		}
-	}
-
-	bfa_trc(ioim->bfa, lun_fetched_cnt);
-	return lun_fetched_cnt;
-}
-
-static bfa_boolean_t
-bfa_ioim_lm_proc_inq_data(struct bfa_ioim_s *ioim)
-{
-	struct scsi_inquiry_data_s *inq;
-	struct scatterlist *sg = scsi_sglist((struct scsi_cmnd *)ioim->dio);
-
-	ioim->proc_rsp_data = bfa_ioim_lm_proc_rsp_data_dummy;
-	inq = (struct scsi_inquiry_data_s *)phys_to_virt(sg_dma_address(sg));
-
-	bfa_trc(ioim->bfa, inq->device_type);
-	inq->peripheral_qual = SCSI_INQ_PQ_NOT_CON;
-	return 0;
-}
-
-static bfa_boolean_t
-bfa_ioim_lm_proc_rpl_data(struct bfa_ioim_s *ioim)
-{
-	struct scsi_cmnd *cmnd = (struct scsi_cmnd *)ioim->dio;
-	struct scatterlist *sg = scsi_sglist(cmnd);
-	struct bfi_ioim_rsp_s *m;
-	struct scsi_report_luns_data_s *rl = NULL;
-	int lun_count = 0, lun_fetched_cnt = 0;
-	u32 residue, pgdlen = 0;
-
-	ioim->proc_rsp_data = bfa_ioim_lm_proc_rsp_data_dummy;
-	if (bfa_get_lun_mask_status(ioim->bfa) != BFA_LUNMASK_ENABLED)
-		return BFA_TRUE;
-
-	m = (struct bfi_ioim_rsp_s *) &ioim->iosp->comp_rspmsg;
-	if (m->scsi_status == SCSI_STATUS_CHECK_CONDITION)
-		return BFA_TRUE;
-
-	pgdlen = sg_dma_len(sg);
-	bfa_trc(ioim->bfa, pgdlen);
-	rl = (struct scsi_report_luns_data_s *)phys_to_virt(sg_dma_address(sg));
-	lun_count = cpu_to_be32(rl->lun_list_length) / sizeof(struct scsi_lun);
-	lun_fetched_cnt = bfa_ioim_lm_update_lun_sg(ioim, &pgdlen, rl);
-
-	if (lun_count == lun_fetched_cnt)
-		return BFA_TRUE;
-
-	bfa_trc(ioim->bfa, lun_count);
-	bfa_trc(ioim->bfa, lun_fetched_cnt);
-	bfa_trc(ioim->bfa, be32_to_cpu(rl->lun_list_length));
-
-	if (be32_to_cpu(rl->lun_list_length) <= pgdlen)
-		rl->lun_list_length = be32_to_cpu(lun_fetched_cnt) *
-				      sizeof(struct scsi_lun);
-	else
-		bfa_stats(ioim->itnim, lm_small_buf_addresidue);
-
-	bfa_trc(ioim->bfa, be32_to_cpu(rl->lun_list_length));
-	bfa_trc(ioim->bfa, be32_to_cpu(m->residue));
-
-	residue = be32_to_cpu(m->residue);
-	residue += (lun_count - lun_fetched_cnt) * sizeof(struct scsi_lun);
-	bfa_stats(ioim->itnim, lm_wire_residue_changed);
-	m->residue = be32_to_cpu(residue);
-	bfa_trc(ioim->bfa, ioim->nsges);
-	return BFA_FALSE;
-}
-
 static void
 __bfa_cb_ioim_good_comp(void *cbarg, bfa_boolean_t complete)
 {
@@ -2454,83 +2167,6 @@
 			  m->scsi_status, sns_len, snsinfo, residue);
 }
 
-static void
-__bfa_cb_ioim_lm_lun_not_sup(void *cbarg, bfa_boolean_t complete)
-{
-	struct bfa_ioim_s *ioim = cbarg;
-	int sns_len = 0xD;
-	u32 residue = scsi_bufflen((struct scsi_cmnd *)ioim->dio);
-	struct scsi_sense_s *snsinfo;
-
-	if (!complete) {
-		bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
-		return;
-	}
-
-	snsinfo = (struct scsi_sense_s *)BFA_SNSINFO_FROM_TAG(
-					ioim->fcpim->fcp, ioim->iotag);
-	snsinfo->rsp_code = SCSI_SENSE_CUR_ERR;
-	snsinfo->add_sense_length = 0xa;
-	snsinfo->asc = SCSI_ASC_LUN_NOT_SUPPORTED;
-	snsinfo->sense_key = ILLEGAL_REQUEST;
-	bfa_trc(ioim->bfa, residue);
-	bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, BFI_IOIM_STS_OK,
-			SCSI_STATUS_CHECK_CONDITION, sns_len,
-			(u8 *)snsinfo, residue);
-}
-
-static void
-__bfa_cb_ioim_lm_rpl_dc(void *cbarg, bfa_boolean_t complete)
-{
-	struct bfa_ioim_s *ioim = cbarg;
-	int sns_len = 0xD;
-	u32 residue = scsi_bufflen((struct scsi_cmnd *)ioim->dio);
-	struct scsi_sense_s *snsinfo;
-
-	if (!complete) {
-		bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
-		return;
-	}
-
-	snsinfo = (struct scsi_sense_s *)BFA_SNSINFO_FROM_TAG(ioim->fcpim->fcp,
-						       ioim->iotag);
-	snsinfo->rsp_code = SCSI_SENSE_CUR_ERR;
-	snsinfo->sense_key = SCSI_MP_IEC_UNIT_ATTN;
-	snsinfo->asc = SCSI_ASC_TOCC;
-	snsinfo->add_sense_length = 0x6;
-	snsinfo->ascq = SCSI_ASCQ_RL_DATA_CHANGED;
-	bfa_trc(ioim->bfa, residue);
-	bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, BFI_IOIM_STS_OK,
-			SCSI_STATUS_CHECK_CONDITION, sns_len,
-			(u8 *)snsinfo, residue);
-}
-
-static void
-__bfa_cb_ioim_lm_lun_not_rdy(void *cbarg, bfa_boolean_t complete)
-{
-	struct bfa_ioim_s *ioim = cbarg;
-	int sns_len = 0xD;
-	u32 residue = scsi_bufflen((struct scsi_cmnd *)ioim->dio);
-	struct scsi_sense_s *snsinfo;
-
-	if (!complete) {
-		bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
-		return;
-	}
-
-	snsinfo = (struct scsi_sense_s *)BFA_SNSINFO_FROM_TAG(
-					ioim->fcpim->fcp, ioim->iotag);
-	snsinfo->rsp_code = SCSI_SENSE_CUR_ERR;
-	snsinfo->add_sense_length = 0xa;
-	snsinfo->sense_key = NOT_READY;
-	snsinfo->asc = SCSI_ASC_LUN_NOT_READY;
-	snsinfo->ascq = SCSI_ASCQ_MAN_INTR_REQ;
-	bfa_trc(ioim->bfa, residue);
-	bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, BFI_IOIM_STS_OK,
-			SCSI_STATUS_CHECK_CONDITION, sns_len,
-			(u8 *)snsinfo, residue);
-}
-
 void
 bfa_fcpim_lunmask_rp_update(struct bfa_s *bfa, wwn_t lp_wwn, wwn_t rp_wwn,
 			u16 rp_tag, u8 lp_tag)
@@ -2647,7 +2283,8 @@
 	if (port) {
 		*pwwn = port->port_cfg.pwwn;
 		rp_fcs = bfa_fcs_lport_get_rport_by_pwwn(port, rpwwn);
-		rp = rp_fcs->bfa_rport;
+		if (rp_fcs)
+			rp = rp_fcs->bfa_rport;
 	}
 
 	lunm_list = bfa_get_lun_mask_list(bfa);
@@ -2715,7 +2352,8 @@
 		if (port) {
 			*pwwn = port->port_cfg.pwwn;
 			rp_fcs = bfa_fcs_lport_get_rport_by_pwwn(port, rpwwn);
-			rp = rp_fcs->bfa_rport;
+			if (rp_fcs)
+				rp = rp_fcs->bfa_rport;
 		}
 	}
 
@@ -2757,7 +2395,6 @@
 		return;
 	}
 
-	ioim->proc_rsp_data = bfa_ioim_lm_proc_rsp_data_dummy;
 	bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, BFI_IOIM_STS_ABORTED,
 			  0, 0, NULL, 0);
 }
@@ -2773,7 +2410,6 @@
 		return;
 	}
 
-	ioim->proc_rsp_data = bfa_ioim_lm_proc_rsp_data_dummy;
 	bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, BFI_IOIM_STS_PATHTOV,
 			  0, 0, NULL, 0);
 }
@@ -2788,7 +2424,6 @@
 		return;
 	}
 
-	ioim->proc_rsp_data = bfa_ioim_lm_proc_rsp_data_dummy;
 	bfa_cb_ioim_abort(ioim->bfa->bfad, ioim->dio);
 }
 
@@ -3132,7 +2767,6 @@
 		ioim->bfa     = fcpim->bfa;
 		ioim->fcpim   = fcpim;
 		ioim->iosp    = iosp;
-		ioim->proc_rsp_data = bfa_ioim_lm_proc_rsp_data_dummy;
 		INIT_LIST_HEAD(&ioim->sgpg_q);
 		bfa_reqq_winit(&ioim->iosp->reqq_wait,
 				   bfa_ioim_qresume, ioim);
@@ -3170,7 +2804,6 @@
 			evt = BFA_IOIM_SM_DONE;
 		else
 			evt = BFA_IOIM_SM_COMP;
-		ioim->proc_rsp_data(ioim);
 		break;
 
 	case BFI_IOIM_STS_TIMEDOUT:
@@ -3206,7 +2839,6 @@
 		if (rsp->abort_tag != ioim->abort_tag) {
 			bfa_trc(ioim->bfa, rsp->abort_tag);
 			bfa_trc(ioim->bfa, ioim->abort_tag);
-			ioim->proc_rsp_data = bfa_ioim_lm_proc_rsp_data_dummy;
 			return;
 		}
 
@@ -3225,7 +2857,6 @@
 		WARN_ON(1);
 	}
 
-	ioim->proc_rsp_data = bfa_ioim_lm_proc_rsp_data_dummy;
 	bfa_sm_send_event(ioim, evt);
 }
 
@@ -3244,15 +2875,7 @@
 
 	bfa_ioim_cb_profile_comp(fcpim, ioim);
 
-	if (bfa_get_lun_mask_status(bfa) != BFA_LUNMASK_ENABLED)  {
-		bfa_sm_send_event(ioim, BFA_IOIM_SM_COMP_GOOD);
-		return;
-	}
-
-	if (ioim->proc_rsp_data(ioim) == BFA_TRUE)
-		bfa_sm_send_event(ioim, BFA_IOIM_SM_COMP_GOOD);
-	else
-		bfa_sm_send_event(ioim, BFA_IOIM_SM_COMP);
+	bfa_sm_send_event(ioim, BFA_IOIM_SM_COMP_GOOD);
 }
 
 /*
@@ -3364,35 +2987,6 @@
 void
 bfa_ioim_start(struct bfa_ioim_s *ioim)
 {
-	struct scsi_cmnd *cmnd = (struct scsi_cmnd *)ioim->dio;
-	struct bfa_lps_s	*lps;
-	enum bfa_ioim_lm_status status;
-	struct scsi_lun scsilun;
-
-	if (bfa_get_lun_mask_status(ioim->bfa) == BFA_LUNMASK_ENABLED) {
-		lps = BFA_IOIM_TO_LPS(ioim);
-		int_to_scsilun(cmnd->device->lun, &scsilun);
-		status = bfa_ioim_lm_check(ioim, lps,
-				ioim->itnim->rport, scsilun);
-		if (status == BFA_IOIM_LM_LUN_NOT_RDY) {
-			bfa_sm_send_event(ioim, BFA_IOIM_SM_LM_LUN_NOT_RDY);
-			bfa_stats(ioim->itnim, lm_lun_not_rdy);
-			return;
-		}
-
-		if (status == BFA_IOIM_LM_LUN_NOT_SUP) {
-			bfa_sm_send_event(ioim, BFA_IOIM_SM_LM_LUN_NOT_SUP);
-			bfa_stats(ioim->itnim, lm_lun_not_sup);
-			return;
-		}
-
-		if (status == BFA_IOIM_LM_RPL_DATA_CHANGED) {
-			bfa_sm_send_event(ioim, BFA_IOIM_SM_LM_RPL_DC);
-			bfa_stats(ioim->itnim, lm_rpl_data_changed);
-			return;
-		}
-	}
-
 	bfa_ioim_cb_profile_start(ioim->fcpim, ioim);
 
 	/*
diff --git a/drivers/scsi/bfa/bfa_fcpim.h b/drivers/scsi/bfa/bfa_fcpim.h
index 1080bcb..36f26da 100644
--- a/drivers/scsi/bfa/bfa_fcpim.h
+++ b/drivers/scsi/bfa/bfa_fcpim.h
@@ -110,7 +110,6 @@
 struct bfad_tskim_s;
 
 typedef void    (*bfa_fcpim_profile_t) (struct bfa_ioim_s *ioim);
-typedef bfa_boolean_t (*bfa_ioim_lm_proc_rsp_data_t) (struct bfa_ioim_s *ioim);
 
 struct bfa_fcpim_s {
 	struct bfa_s		*bfa;
@@ -124,7 +123,6 @@
 	u32			path_tov;
 	u16			q_depth;
 	u8			reqq;		/*  Request queue to be used */
-	u8			lun_masking_pending;
 	struct list_head	itnim_q;	/*  queue of active itnim */
 	struct list_head	ioim_resfree_q; /*  IOs waiting for f/w */
 	struct list_head	ioim_comp_q;	/*  IO global comp Q	*/
@@ -181,7 +179,6 @@
 	u8			reqq;		/*  Request queue for I/O */
 	u8			mode;		/*  IO is passthrough or not */
 	u64			start_time;	/*  IO's Profile start val */
-	bfa_ioim_lm_proc_rsp_data_t proc_rsp_data; /* RSP data adjust */
 };
 
 struct bfa_ioim_sp_s {
@@ -261,10 +258,6 @@
 	(__ioim)->iotag |= k << BFA_IOIM_RETRY_TAG_OFFSET;		\
 } while (0)
 
-#define BFA_IOIM_TO_LPS(__ioim)		\
-	BFA_LPS_FROM_TAG(BFA_LPS_MOD(__ioim->bfa),	\
-		__ioim->itnim->rport->rport_info.lp_tag)
-
 static inline bfa_boolean_t
 bfa_ioim_maxretry_reached(struct bfa_ioim_s *ioim)
 {
diff --git a/drivers/scsi/bfa/bfa_svc.h b/drivers/scsi/bfa/bfa_svc.h
index 95adb86..b52cbb6 100644
--- a/drivers/scsi/bfa/bfa_svc.h
+++ b/drivers/scsi/bfa/bfa_svc.h
@@ -582,11 +582,6 @@
 #define BFA_LP_TAG_INVALID	0xff
 void	bfa_rport_set_lunmask(struct bfa_s *bfa, struct bfa_rport_s *rp);
 void	bfa_rport_unset_lunmask(struct bfa_s *bfa, struct bfa_rport_s *rp);
-bfa_boolean_t	bfa_rport_lunmask_active(struct bfa_rport_s *rp);
-wwn_t	bfa_rport_get_pwwn(struct bfa_s *bfa, struct bfa_rport_s *rp);
-struct bfa_rport_s *bfa_rport_get_by_wwn(struct bfa_s *bfa, u16 vf_id,
-					 wwn_t *lpwwn, wwn_t rpwwn);
-void *bfa_cb_get_rp_by_wwn(void *arg, u16 vf_id, wwn_t *lpwwn, wwn_t rpwwn);
 
 /*
  * bfa fcxp API functions
diff --git a/drivers/scsi/bfa/bfad.c b/drivers/scsi/bfa/bfad.c
index 66fb725..404fd10 100644
--- a/drivers/scsi/bfa/bfad.c
+++ b/drivers/scsi/bfa/bfad.c
@@ -674,6 +674,7 @@
 
 	spin_lock_irqsave(&bfad->bfad_lock, flags);
 	bfa_fcs_vport_start(&vport->fcs_vport);
+	list_add_tail(&vport->list_entry, &bfad->vport_list);
 	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 
 	return BFA_STATUS_OK;
@@ -1404,6 +1405,7 @@
 	bfad->ref_count = 0;
 	bfad->pport.bfad = bfad;
 	INIT_LIST_HEAD(&bfad->pbc_vport_list);
+	INIT_LIST_HEAD(&bfad->vport_list);
 
 	/* Setup the debugfs node for this bfad */
 	if (bfa_debugfs_enable)
diff --git a/drivers/scsi/bfa/bfad_attr.c b/drivers/scsi/bfa/bfad_attr.c
index 9d95844..1938fe0 100644
--- a/drivers/scsi/bfa/bfad_attr.c
+++ b/drivers/scsi/bfa/bfad_attr.c
@@ -491,7 +491,7 @@
 
 free_scsi_host:
 	bfad_scsi_host_free(bfad, im_port);
-
+	list_del(&vport->list_entry);
 	kfree(vport);
 
 	return 0;
diff --git a/drivers/scsi/bfa/bfad_bsg.c b/drivers/scsi/bfa/bfad_bsg.c
index 06fc00c..530de2b 100644
--- a/drivers/scsi/bfa/bfad_bsg.c
+++ b/drivers/scsi/bfa/bfad_bsg.c
@@ -2394,6 +2394,21 @@
 	return 0;
 }
 
+/* Function to reset the LUN SCAN mode */
+static void
+bfad_iocmd_lunmask_reset_lunscan_mode(struct bfad_s *bfad, int lunmask_cfg)
+{
+	struct bfad_im_port_s *pport_im = bfad->pport.im_port;
+	struct bfad_vport_s *vport = NULL;
+
+	/* Set the scsi device LUN SCAN flags for base port */
+	bfad_reset_sdev_bflags(pport_im, lunmask_cfg);
+
+	/* Set the scsi device LUN SCAN flags for the vports */
+	list_for_each_entry(vport, &bfad->vport_list, list_entry)
+		bfad_reset_sdev_bflags(vport->drv_port.im_port, lunmask_cfg);
+}
+
 int
 bfad_iocmd_lunmask(struct bfad_s *bfad, void *pcmd, unsigned int v_cmd)
 {
@@ -2401,11 +2416,17 @@
 	unsigned long	flags;
 
 	spin_lock_irqsave(&bfad->bfad_lock, flags);
-	if (v_cmd == IOCMD_FCPIM_LUNMASK_ENABLE)
+	if (v_cmd == IOCMD_FCPIM_LUNMASK_ENABLE) {
 		iocmd->status = bfa_fcpim_lunmask_update(&bfad->bfa, BFA_TRUE);
-	else if (v_cmd == IOCMD_FCPIM_LUNMASK_DISABLE)
+		/* Set the LUN Scanning mode to be Sequential scan */
+		if (iocmd->status == BFA_STATUS_OK)
+			bfad_iocmd_lunmask_reset_lunscan_mode(bfad, BFA_TRUE);
+	} else if (v_cmd == IOCMD_FCPIM_LUNMASK_DISABLE) {
 		iocmd->status = bfa_fcpim_lunmask_update(&bfad->bfa, BFA_FALSE);
-	else if (v_cmd == IOCMD_FCPIM_LUNMASK_CLEAR)
+		/* Set the LUN Scanning mode to default REPORT_LUNS scan */
+		if (iocmd->status == BFA_STATUS_OK)
+			bfad_iocmd_lunmask_reset_lunscan_mode(bfad, BFA_FALSE);
+	} else if (v_cmd == IOCMD_FCPIM_LUNMASK_CLEAR)
 		iocmd->status = bfa_fcpim_lunmask_clear(&bfad->bfa);
 	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 	return 0;
diff --git a/drivers/scsi/bfa/bfad_drv.h b/drivers/scsi/bfa/bfad_drv.h
index 5e19a5f..dc5b9d9 100644
--- a/drivers/scsi/bfa/bfad_drv.h
+++ b/drivers/scsi/bfa/bfad_drv.h
@@ -43,6 +43,7 @@
 #include <scsi/scsi_transport_fc.h>
 #include <scsi/scsi_transport.h>
 #include <scsi/scsi_bsg_fc.h>
+#include <scsi/scsi_devinfo.h>
 
 #include "bfa_modules.h"
 #include "bfa_fcs.h"
@@ -227,6 +228,7 @@
 	struct list_head	active_aen_q;
 	struct bfa_aen_entry_s	aen_list[BFA_AEN_MAX_ENTRY];
 	spinlock_t		bfad_aen_spinlock;
+	struct list_head	vport_list;
 };
 
 /* BFAD state machine events */
diff --git a/drivers/scsi/bfa/bfad_im.c b/drivers/scsi/bfa/bfad_im.c
index e5db649..3153923 100644
--- a/drivers/scsi/bfa/bfad_im.c
+++ b/drivers/scsi/bfa/bfad_im.c
@@ -918,16 +918,70 @@
 }
 
 /*
+ * Function is invoked from the SCSI Host Template slave_alloc() entry point.
+ * Has the logic to query the LUN Mask database to check if this LUN needs to
+ * be made visible to the SCSI mid-layer or not.
+ *
+ * Returns BFA_STATUS_OK if this LUN needs to be added to the OS stack.
+ * Returns -ENXIO to notify SCSI mid-layer to not add this LUN to the OS stack.
+ */
+static int
+bfad_im_check_if_make_lun_visible(struct scsi_device *sdev,
+				  struct fc_rport *rport)
+{
+	struct bfad_itnim_data_s *itnim_data =
+				(struct bfad_itnim_data_s *) rport->dd_data;
+	struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
+	struct bfa_rport_s *bfa_rport = itnim_data->itnim->bfa_itnim->rport;
+	struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(bfa);
+	int i = 0, ret = -ENXIO;
+
+	for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
+		if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE &&
+		    scsilun_to_int(&lun_list[i].lun) == sdev->lun &&
+		    lun_list[i].rp_tag == bfa_rport->rport_tag &&
+		    lun_list[i].lp_tag == (u8)bfa_rport->rport_info.lp_tag) {
+			ret = BFA_STATUS_OK;
+			break;
+		}
+	}
+	return ret;
+}
+
+/*
  * Scsi_Host template entry slave_alloc
  */
 static int
 bfad_im_slave_alloc(struct scsi_device *sdev)
 {
 	struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
+	struct bfad_itnim_data_s *itnim_data =
+				(struct bfad_itnim_data_s *) rport->dd_data;
+	struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
 
 	if (!rport || fc_remote_port_chkready(rport))
 		return -ENXIO;
 
+	if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED) {
+		/*
+		 * We should not mask LUN 0 - since this will translate
+		 * to no LUN / TARGET for SCSI ml resulting no scan.
+		 */
+		if (sdev->lun == 0) {
+			sdev->sdev_bflags |= BLIST_NOREPORTLUN |
+					     BLIST_SPARSELUN;
+			goto done;
+		}
+
+		/*
+		 * Query LUN Mask configuration - to expose this LUN
+		 * to the SCSI mid-layer or to mask it.
+		 */
+		if (bfad_im_check_if_make_lun_visible(sdev, rport) !=
+							BFA_STATUS_OK)
+			return -ENXIO;
+	}
+done:
 	sdev->hostdata = rport->dd_data;
 
 	return 0;
@@ -1037,6 +1091,8 @@
 	    && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
 		itnim->scsi_tgt_id = fc_rport->scsi_target_id;
 
+	itnim->channel = fc_rport->channel;
+
 	return;
 }
 
diff --git a/drivers/scsi/bfa/bfad_im.h b/drivers/scsi/bfa/bfad_im.h
index 004b6cf..0814367 100644
--- a/drivers/scsi/bfa/bfad_im.h
+++ b/drivers/scsi/bfa/bfad_im.h
@@ -91,6 +91,7 @@
 	struct fc_rport *fc_rport;
 	struct bfa_itnim_s *bfa_itnim;
 	u16        scsi_tgt_id;
+	u16	   channel;
 	u16        queue_work;
 	unsigned long	last_ramp_up_time;
 	unsigned long	last_queue_full_time;
@@ -166,4 +167,30 @@
 int bfad_im_bsg_request(struct fc_bsg_job *job);
 int bfad_im_bsg_timeout(struct fc_bsg_job *job);
 
+/*
+ * Macro to set the SCSI device sdev_bflags - sdev_bflags are used by the
+ * SCSI mid-layer to choose LUN Scanning mode REPORT_LUNS vs. Sequential Scan
+ *
+ * Internally iterate's over all the ITNIM's part of the im_port & set's the
+ * sdev_bflags for the scsi_device associated with LUN #0.
+ */
+#define bfad_reset_sdev_bflags(__im_port, __lunmask_cfg) do {		\
+	struct scsi_device *__sdev = NULL;				\
+	struct bfad_itnim_s *__itnim = NULL;				\
+	u32 scan_flags = BLIST_NOREPORTLUN | BLIST_SPARSELUN;		\
+	list_for_each_entry(__itnim, &((__im_port)->itnim_mapped_list),	\
+			    list_entry) {				\
+		__sdev = scsi_device_lookup((__im_port)->shost,		\
+					    __itnim->channel,		\
+					    __itnim->scsi_tgt_id, 0);	\
+		if (__sdev) {						\
+			if ((__lunmask_cfg) == BFA_TRUE)		\
+				__sdev->sdev_bflags |= scan_flags;	\
+			else						\
+				__sdev->sdev_bflags &= ~scan_flags;	\
+			scsi_device_put(__sdev);			\
+		}							\
+	}								\
+} while (0)
+
 #endif
diff --git a/drivers/scsi/cxgbi/libcxgbi.c b/drivers/scsi/cxgbi/libcxgbi.c
index c5360ff..d3ff9cd 100644
--- a/drivers/scsi/cxgbi/libcxgbi.c
+++ b/drivers/scsi/cxgbi/libcxgbi.c
@@ -1868,8 +1868,9 @@
 
 	tdata->skb = alloc_skb(cdev->skb_tx_rsvd + headroom, GFP_ATOMIC);
 	if (!tdata->skb) {
-		pr_warn("alloc skb %u+%u, opcode 0x%x failed.\n",
-			cdev->skb_tx_rsvd, headroom, opcode);
+		struct cxgbi_sock *csk = cconn->cep->csk;
+		struct net_device *ndev = cdev->ports[csk->port_id];
+		ndev->stats.tx_dropped++;
 		return -ENOMEM;
 	}
 
diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c
index 4ef0212..04c5cea 100644
--- a/drivers/scsi/device_handler/scsi_dh_alua.c
+++ b/drivers/scsi/device_handler/scsi_dh_alua.c
@@ -466,6 +466,11 @@
 			 * Power On, Reset, or Bus Device Reset, just retry.
 			 */
 			return ADD_TO_MLQUEUE;
+		if (sense_hdr->asc == 0x2a && sense_hdr->ascq == 0x01)
+			/*
+			 * Mode Parameters Changed
+			 */
+			return ADD_TO_MLQUEUE;
 		if (sense_hdr->asc == 0x2a && sense_hdr->ascq == 0x06)
 			/*
 			 * ALUA state changed
diff --git a/drivers/scsi/device_handler/scsi_dh_rdac.c b/drivers/scsi/device_handler/scsi_dh_rdac.c
index 841ebf4..53a31c7 100644
--- a/drivers/scsi/device_handler/scsi_dh_rdac.c
+++ b/drivers/scsi/device_handler/scsi_dh_rdac.c
@@ -953,6 +953,8 @@
 	if (!kmpath_rdacd) {
 		scsi_unregister_device_handler(&rdac_dh);
 		printk(KERN_ERR "kmpath_rdacd creation failed.\n");
+
+		r = -EINVAL;
 	}
 done:
 	return r;
diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c
index 8d67467..e959960 100644
--- a/drivers/scsi/fcoe/fcoe.c
+++ b/drivers/scsi/fcoe/fcoe.c
@@ -58,7 +58,11 @@
 MODULE_PARM_DESC(ddp_min, "Minimum I/O size in bytes for "	\
 		 "Direct Data Placement (DDP).");
 
-DEFINE_MUTEX(fcoe_config_mutex);
+unsigned int fcoe_debug_logging;
+module_param_named(debug_logging, fcoe_debug_logging, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(debug_logging, "a bit mask of logging levels");
+
+static DEFINE_MUTEX(fcoe_config_mutex);
 
 static struct workqueue_struct *fcoe_wq;
 
@@ -67,8 +71,8 @@
 
 /* fcoe host list */
 /* must only by accessed under the RTNL mutex */
-LIST_HEAD(fcoe_hostlist);
-DEFINE_PER_CPU(struct fcoe_percpu_s, fcoe_percpu);
+static LIST_HEAD(fcoe_hostlist);
+static DEFINE_PER_CPU(struct fcoe_percpu_s, fcoe_percpu);
 
 /* Function Prototypes */
 static int fcoe_reset(struct Scsi_Host *);
@@ -157,7 +161,7 @@
 	.lport_set_port_id = fcoe_set_port_id,
 };
 
-struct fc_function_template fcoe_nport_fc_functions = {
+static struct fc_function_template fcoe_nport_fc_functions = {
 	.show_host_node_name = 1,
 	.show_host_port_name = 1,
 	.show_host_supported_classes = 1,
@@ -197,7 +201,7 @@
 	.bsg_request = fc_lport_bsg_request,
 };
 
-struct fc_function_template fcoe_vport_fc_functions = {
+static struct fc_function_template fcoe_vport_fc_functions = {
 	.show_host_node_name = 1,
 	.show_host_port_name = 1,
 	.show_host_supported_classes = 1,
@@ -433,7 +437,7 @@
  *
  * Caller must be holding the RTNL mutex
  */
-void fcoe_interface_cleanup(struct fcoe_interface *fcoe)
+static void fcoe_interface_cleanup(struct fcoe_interface *fcoe)
 {
 	struct net_device *netdev = fcoe->netdev;
 	struct fcoe_ctlr *fip = &fcoe->ctlr;
@@ -748,7 +752,7 @@
  *
  * Returns: True for read types I/O, otherwise returns false.
  */
-bool fcoe_oem_match(struct fc_frame *fp)
+static bool fcoe_oem_match(struct fc_frame *fp)
 {
 	struct fc_frame_header *fh = fc_frame_header_get(fp);
 	struct fcp_cmnd *fcp;
@@ -756,11 +760,12 @@
 	if (fc_fcp_is_read(fr_fsp(fp)) &&
 	    (fr_fsp(fp)->data_len > fcoe_ddp_min))
 		return true;
-	else if (!(ntoh24(fh->fh_f_ctl) & FC_FC_EX_CTX)) {
+	else if ((fr_fsp(fp) == NULL) &&
+		 (fh->fh_r_ctl == FC_RCTL_DD_UNSOL_CMD) &&
+		 (ntohs(fh->fh_rx_id) == FC_XID_UNKNOWN)) {
 		fcp = fc_frame_payload_get(fp, sizeof(*fcp));
-		if (ntohs(fh->fh_rx_id) == FC_XID_UNKNOWN &&
-		    fcp && (ntohl(fcp->fc_dl) > fcoe_ddp_min) &&
-		    (fcp->fc_flags & FCP_CFL_WRDATA))
+		if ((fcp->fc_flags & FCP_CFL_WRDATA) &&
+		    (ntohl(fcp->fc_dl) > fcoe_ddp_min))
 			return true;
 	}
 	return false;
@@ -1106,7 +1111,7 @@
  *
  * Returns: 0 on success
  */
-int __exit fcoe_if_exit(void)
+static int __exit fcoe_if_exit(void)
 {
 	fc_release_transport(fcoe_nport_scsi_transport);
 	fc_release_transport(fcoe_vport_scsi_transport);
@@ -1295,7 +1300,7 @@
  *
  * Returns: 0 for success
  */
-int fcoe_rcv(struct sk_buff *skb, struct net_device *netdev,
+static int fcoe_rcv(struct sk_buff *skb, struct net_device *netdev,
 	     struct packet_type *ptype, struct net_device *olddev)
 {
 	struct fc_lport *lport;
@@ -1451,7 +1456,7 @@
  *
  * Return: 0 for success
  */
-int fcoe_xmit(struct fc_lport *lport, struct fc_frame *fp)
+static int fcoe_xmit(struct fc_lport *lport, struct fc_frame *fp)
 {
 	int wlen;
 	u32 crc;
@@ -1671,8 +1676,7 @@
 			skb->dev ? skb->dev->name : "<NULL>");
 
 	port = lport_priv(lport);
-	if (skb_is_nonlinear(skb))
-		skb_linearize(skb);	/* not ideal */
+	skb_linearize(skb); /* check for skb_is_nonlinear is within skb_linearize */
 
 	/*
 	 * Frame length checks and setting up the header pointers
@@ -1728,7 +1732,7 @@
  *
  * Return: 0 for success
  */
-int fcoe_percpu_receive_thread(void *arg)
+static int fcoe_percpu_receive_thread(void *arg)
 {
 	struct fcoe_percpu_s *p = arg;
 	struct sk_buff *skb;
@@ -2146,7 +2150,7 @@
  * Returns: 0 if the ethtool query was successful
  *          -1 if the ethtool query failed
  */
-int fcoe_link_speed_update(struct fc_lport *lport)
+static int fcoe_link_speed_update(struct fc_lport *lport)
 {
 	struct net_device *netdev = fcoe_netdev(lport);
 	struct ethtool_cmd ecmd;
@@ -2180,7 +2184,7 @@
  * Returns: 0 if link is UP and OK, -1 if not
  *
  */
-int fcoe_link_ok(struct fc_lport *lport)
+static int fcoe_link_ok(struct fc_lport *lport)
 {
 	struct net_device *netdev = fcoe_netdev(lport);
 
@@ -2200,7 +2204,7 @@
  * there no packets that will be handled by the lport, but also that any
  * threads already handling packet have returned.
  */
-void fcoe_percpu_clean(struct fc_lport *lport)
+static void fcoe_percpu_clean(struct fc_lport *lport)
 {
 	struct fcoe_percpu_s *pp;
 	struct fcoe_rcv_info *fr;
@@ -2251,7 +2255,7 @@
  *
  * Returns: Always 0 (return value required by FC transport template)
  */
-int fcoe_reset(struct Scsi_Host *shost)
+static int fcoe_reset(struct Scsi_Host *shost)
 {
 	struct fc_lport *lport = shost_priv(shost);
 	struct fcoe_port *port = lport_priv(lport);
diff --git a/drivers/scsi/fcoe/fcoe.h b/drivers/scsi/fcoe/fcoe.h
index 6c6884b..bcc89e6 100644
--- a/drivers/scsi/fcoe/fcoe.h
+++ b/drivers/scsi/fcoe/fcoe.h
@@ -40,9 +40,7 @@
 #define FCOE_MIN_XID		0x0000	/* the min xid supported by fcoe_sw */
 #define FCOE_MAX_XID		0x0FFF	/* the max xid supported by fcoe_sw */
 
-unsigned int fcoe_debug_logging;
-module_param_named(debug_logging, fcoe_debug_logging, int, S_IRUGO|S_IWUSR);
-MODULE_PARM_DESC(debug_logging, "a bit mask of logging levels");
+extern unsigned int fcoe_debug_logging;
 
 #define FCOE_LOGGING	    0x01 /* General logging, not categorized */
 #define FCOE_NETDEV_LOGGING 0x02 /* Netdevice logging */
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 5140f5d..b96962c 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -4271,7 +4271,9 @@
 	remove_ctlr_from_lockup_detector_list(h);
 	/* If the list of ctlr's to monitor is empty, stop the thread */
 	if (list_empty(&hpsa_ctlr_list)) {
+		spin_unlock_irqrestore(&lockup_detector_lock, flags);
 		kthread_stop(hpsa_lockup_detector);
+		spin_lock_irqsave(&lockup_detector_lock, flags);
 		hpsa_lockup_detector = NULL;
 	}
 	spin_unlock_irqrestore(&lockup_detector_lock, flags);
diff --git a/drivers/scsi/isci/firmware/Makefile b/drivers/scsi/isci/firmware/Makefile
deleted file mode 100644
index 5f54461..0000000
--- a/drivers/scsi/isci/firmware/Makefile
+++ /dev/null
@@ -1,19 +0,0 @@
-# Makefile for create_fw
-#
-CC=gcc
-CFLAGS=-c -Wall -O2 -g
-LDFLAGS=
-SOURCES=create_fw.c
-OBJECTS=$(SOURCES:.cpp=.o)
-EXECUTABLE=create_fw
-
-all: $(SOURCES) $(EXECUTABLE)
-
-$(EXECUTABLE): $(OBJECTS)
-	$(CC) $(LDFLAGS) $(OBJECTS) -o $@
-
-.c.o:
-	$(CC) $(CFLAGS) $< -O $@
-
-clean:
-	rm -f *.o $(EXECUTABLE)
diff --git a/drivers/scsi/isci/firmware/README b/drivers/scsi/isci/firmware/README
deleted file mode 100644
index 8056d2b..0000000
--- a/drivers/scsi/isci/firmware/README
+++ /dev/null
@@ -1,36 +0,0 @@
-This defines the temporary binary blow we are to pass to the SCU
-driver to emulate the binary firmware that we will eventually be
-able to access via NVRAM on the SCU controller.
-
-The current size of the binary blob is expected to be 149 bytes or larger
-
-Header Types:
-0x1: Phy Masks
-0x2: Phy Gens
-0x3: SAS Addrs
-0xff: End of Data
-
-ID string - u8[12]: "#SCU MAGIC#\0"
-Version - u8: 1
-SubVersion - u8: 0
-
-Header Type - u8: 0x1
-Size - u8: 8
-Phy Mask - u32[8]
-
-Header Type - u8: 0x2
-Size - u8: 8
-Phy Gen - u32[8]
-
-Header Type - u8: 0x3
-Size - u8: 8
-Sas Addr - u64[8]
-
-Header Type - u8: 0xf
-
-
-==============================================================================
-
-Place isci_firmware.bin in /lib/firmware
-Be sure to recreate the initramfs image to include the firmware.
-
diff --git a/drivers/scsi/isci/firmware/create_fw.c b/drivers/scsi/isci/firmware/create_fw.c
deleted file mode 100644
index c7a2887..0000000
--- a/drivers/scsi/isci/firmware/create_fw.c
+++ /dev/null
@@ -1,99 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <string.h>
-#include <errno.h>
-#include <asm/types.h>
-#include <strings.h>
-#include <stdint.h>
-
-#include "create_fw.h"
-#include "../probe_roms.h"
-
-int write_blob(struct isci_orom *isci_orom)
-{
-	FILE *fd;
-	int err;
-	size_t count;
-
-	fd = fopen(blob_name, "w+");
-	if (!fd) {
-		perror("Open file for write failed");
-		fclose(fd);
-		return -EIO;
-	}
-
-	count = fwrite(isci_orom, sizeof(struct isci_orom), 1, fd);
-	if (count != 1) {
-		perror("Write data failed");
-		fclose(fd);
-		return -EIO;
-	}
-
-	fclose(fd);
-
-	return 0;
-}
-
-void set_binary_values(struct isci_orom *isci_orom)
-{
-	int ctrl_idx, phy_idx, port_idx;
-
-	/* setting OROM signature */
-	strncpy(isci_orom->hdr.signature, sig, strlen(sig));
-	isci_orom->hdr.version = version;
-	isci_orom->hdr.total_block_length = sizeof(struct isci_orom);
-	isci_orom->hdr.hdr_length = sizeof(struct sci_bios_oem_param_block_hdr);
-	isci_orom->hdr.num_elements = num_elements;
-
-	for (ctrl_idx = 0; ctrl_idx < 2; ctrl_idx++) {
-		isci_orom->ctrl[ctrl_idx].controller.mode_type = mode_type;
-		isci_orom->ctrl[ctrl_idx].controller.max_concurrent_dev_spin_up =
-			max_num_concurrent_dev_spin_up;
-		isci_orom->ctrl[ctrl_idx].controller.do_enable_ssc =
-			enable_ssc;
-
-		for (port_idx = 0; port_idx < 4; port_idx++)
-			isci_orom->ctrl[ctrl_idx].ports[port_idx].phy_mask =
-				phy_mask[ctrl_idx][port_idx];
-
-		for (phy_idx = 0; phy_idx < 4; phy_idx++) {
-			isci_orom->ctrl[ctrl_idx].phys[phy_idx].sas_address.high =
-				(__u32)(sas_addr[ctrl_idx][phy_idx] >> 32);
-			isci_orom->ctrl[ctrl_idx].phys[phy_idx].sas_address.low =
-				(__u32)(sas_addr[ctrl_idx][phy_idx]);
-
-			isci_orom->ctrl[ctrl_idx].phys[phy_idx].afe_tx_amp_control0 =
-				afe_tx_amp_control0;
-			isci_orom->ctrl[ctrl_idx].phys[phy_idx].afe_tx_amp_control1 =
-				afe_tx_amp_control1;
-			isci_orom->ctrl[ctrl_idx].phys[phy_idx].afe_tx_amp_control2 =
-				afe_tx_amp_control2;
-			isci_orom->ctrl[ctrl_idx].phys[phy_idx].afe_tx_amp_control3 =
-				afe_tx_amp_control3;
-		}
-	}
-}
-
-int main(void)
-{
-	int err;
-	struct isci_orom *isci_orom;
-
-	isci_orom = malloc(sizeof(struct isci_orom));
-	memset(isci_orom, 0, sizeof(struct isci_orom));
-
-	set_binary_values(isci_orom);
-
-	err = write_blob(isci_orom);
-	if (err < 0) {
-		free(isci_orom);
-		return err;
-	}
-
-	free(isci_orom);
-	return 0;
-}
diff --git a/drivers/scsi/isci/firmware/create_fw.h b/drivers/scsi/isci/firmware/create_fw.h
deleted file mode 100644
index 5f29882..0000000
--- a/drivers/scsi/isci/firmware/create_fw.h
+++ /dev/null
@@ -1,77 +0,0 @@
-#ifndef _CREATE_FW_H_
-#define _CREATE_FW_H_
-#include "../probe_roms.h"
-
-
-/* we are configuring for 2 SCUs */
-static const int num_elements = 2;
-
-/*
- * For all defined arrays:
- * elements 0-3 are for SCU0, ports 0-3
- * elements 4-7 are for SCU1, ports 0-3
- *
- * valid configurations for one SCU are:
- *  P0  P1  P2  P3
- * ----------------
- * 0xF,0x0,0x0,0x0 # 1 x4 port
- * 0x3,0x0,0x4,0x8 # Phys 0 and 1 are a x2 port, phy 2 and phy 3 are each x1
- *                 # ports
- * 0x1,0x2,0xC,0x0 # Phys 0 and 1 are each x1 ports, phy 2 and phy 3 are a x2
- *                 # port
- * 0x3,0x0,0xC,0x0 # Phys 0 and 1 are a x2 port, phy 2 and phy 3 are a x2 port
- * 0x1,0x2,0x4,0x8 # Each phy is a x1 port (this is the default configuration)
- *
- * if there is a port/phy on which you do not wish to override the default
- * values, use the value assigned to UNINIT_PARAM (255).
- */
-
-/* discovery mode type (port auto config mode by default ) */
-
-/*
- * if there is a port/phy on which you do not wish to override the default
- * values, use the value "0000000000000000". SAS address of zero's is
- * considered invalid and will not be used.
- */
-#ifdef MPC
-static const int mode_type = SCIC_PORT_MANUAL_CONFIGURATION_MODE;
-static const __u8 phy_mask[2][4] = { {1, 2, 4, 8},
-				     {1, 2, 4, 8} };
-static const unsigned long long sas_addr[2][4] = { { 0x5FCFFFFFF0000001ULL,
-						     0x5FCFFFFFF0000002ULL,
-						     0x5FCFFFFFF0000003ULL,
-						     0x5FCFFFFFF0000004ULL },
-						   { 0x5FCFFFFFF0000005ULL,
-						     0x5FCFFFFFF0000006ULL,
-						     0x5FCFFFFFF0000007ULL,
-						     0x5FCFFFFFF0000008ULL } };
-#else	/* APC (default) */
-static const int mode_type = SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE;
-static const __u8 phy_mask[2][4];
-static const unsigned long long sas_addr[2][4] = { { 0x5FCFFFFF00000001ULL,
-						     0x5FCFFFFF00000001ULL,
-						     0x5FCFFFFF00000001ULL,
-						     0x5FCFFFFF00000001ULL },
-						   { 0x5FCFFFFF00000002ULL,
-						     0x5FCFFFFF00000002ULL,
-						     0x5FCFFFFF00000002ULL,
-						     0x5FCFFFFF00000002ULL } };
-#endif
-
-/* Maximum number of concurrent device spin up */
-static const int max_num_concurrent_dev_spin_up = 1;
-
-/* enable of ssc operation */
-static const int enable_ssc;
-
-/* AFE_TX_AMP_CONTROL */
-static const unsigned int afe_tx_amp_control0 = 0x000bdd08;
-static const unsigned int afe_tx_amp_control1 = 0x000ffc00;
-static const unsigned int afe_tx_amp_control2 = 0x000b7c09;
-static const unsigned int afe_tx_amp_control3 = 0x000afc6e;
-
-static const char blob_name[] = "isci_firmware.bin";
-static const char sig[] = "ISCUOEMB";
-static const unsigned char version = 0x10;
-
-#endif
diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c
index e7fe9c4..1a65d65 100644
--- a/drivers/scsi/isci/host.c
+++ b/drivers/scsi/isci/host.c
@@ -899,7 +899,8 @@
 			 */
 			if ((iphy->is_in_link_training == false && state == SCI_PHY_INITIAL) ||
 			    (iphy->is_in_link_training == false && state == SCI_PHY_STOPPED) ||
-			    (iphy->is_in_link_training == true && is_phy_starting(iphy))) {
+			    (iphy->is_in_link_training == true && is_phy_starting(iphy)) ||
+			    (ihost->port_agent.phy_ready_mask != ihost->port_agent.phy_configured_mask)) {
 				is_controller_start_complete = false;
 				break;
 			}
@@ -1666,6 +1667,9 @@
 	/* Default to no SSC operation. */
 	ihost->oem_parameters.controller.do_enable_ssc = false;
 
+	/* Default to short cables on all phys. */
+	ihost->oem_parameters.controller.cable_selection_mask = 0;
+
 	/* Initialize all of the port parameter information to narrow ports. */
 	for (index = 0; index < SCI_MAX_PORTS; index++) {
 		ihost->oem_parameters.ports[index].phy_mask = 0;
@@ -1673,8 +1677,9 @@
 
 	/* Initialize all of the phy parameter information. */
 	for (index = 0; index < SCI_MAX_PHYS; index++) {
-		/* Default to 6G (i.e. Gen 3) for now. */
-		ihost->user_parameters.phys[index].max_speed_generation = 3;
+		/* Default to 3G (i.e. Gen 2). */
+		ihost->user_parameters.phys[index].max_speed_generation =
+			SCIC_SDS_PARM_GEN2_SPEED;
 
 		/* the frequencies cannot be 0 */
 		ihost->user_parameters.phys[index].align_insertion_frequency = 0x7f;
@@ -1694,7 +1699,7 @@
 	ihost->user_parameters.ssp_inactivity_timeout = 5;
 	ihost->user_parameters.stp_max_occupancy_timeout = 5;
 	ihost->user_parameters.ssp_max_occupancy_timeout = 20;
-	ihost->user_parameters.no_outbound_task_timeout = 20;
+	ihost->user_parameters.no_outbound_task_timeout = 2;
 }
 
 static void controller_timeout(unsigned long data)
@@ -1759,7 +1764,7 @@
 	return sci_controller_reset(ihost);
 }
 
-int sci_oem_parameters_validate(struct sci_oem_params *oem)
+int sci_oem_parameters_validate(struct sci_oem_params *oem, u8 version)
 {
 	int i;
 
@@ -1791,18 +1796,61 @@
 	    oem->controller.max_concurr_spin_up < 1)
 		return -EINVAL;
 
+	if (oem->controller.do_enable_ssc) {
+		if (version < ISCI_ROM_VER_1_1 && oem->controller.do_enable_ssc != 1)
+			return -EINVAL;
+
+		if (version >= ISCI_ROM_VER_1_1) {
+			u8 test = oem->controller.ssc_sata_tx_spread_level;
+
+			switch (test) {
+			case 0:
+			case 2:
+			case 3:
+			case 6:
+			case 7:
+				break;
+			default:
+				return -EINVAL;
+			}
+
+			test = oem->controller.ssc_sas_tx_spread_level;
+			if (oem->controller.ssc_sas_tx_type == 0) {
+				switch (test) {
+				case 0:
+				case 2:
+				case 3:
+					break;
+				default:
+					return -EINVAL;
+				}
+			} else if (oem->controller.ssc_sas_tx_type == 1) {
+				switch (test) {
+				case 0:
+				case 3:
+				case 6:
+					break;
+				default:
+					return -EINVAL;
+				}
+			}
+		}
+	}
+
 	return 0;
 }
 
 static enum sci_status sci_oem_parameters_set(struct isci_host *ihost)
 {
 	u32 state = ihost->sm.current_state_id;
+	struct isci_pci_info *pci_info = to_pci_info(ihost->pdev);
 
 	if (state == SCIC_RESET ||
 	    state == SCIC_INITIALIZING ||
 	    state == SCIC_INITIALIZED) {
 
-		if (sci_oem_parameters_validate(&ihost->oem_parameters))
+		if (sci_oem_parameters_validate(&ihost->oem_parameters,
+						pci_info->orom->hdr.version))
 			return SCI_FAILURE_INVALID_PARAMETER_VALUE;
 
 		return SCI_SUCCESS;
@@ -1857,6 +1905,31 @@
 		ihost->power_control.phys_waiting--;
 		ihost->power_control.phys_granted_power++;
 		sci_phy_consume_power_handler(iphy);
+
+		if (iphy->protocol == SCIC_SDS_PHY_PROTOCOL_SAS) {
+			u8 j;
+
+			for (j = 0; j < SCI_MAX_PHYS; j++) {
+				struct isci_phy *requester = ihost->power_control.requesters[j];
+
+				/*
+				 * Search the power_control queue to see if there are other phys
+				 * attached to the same remote device. If found, take all of
+				 * them out of await_sas_power state.
+				 */
+				if (requester != NULL && requester != iphy) {
+					u8 other = memcmp(requester->frame_rcvd.iaf.sas_addr,
+							  iphy->frame_rcvd.iaf.sas_addr,
+							  sizeof(requester->frame_rcvd.iaf.sas_addr));
+
+					if (other == 0) {
+						ihost->power_control.requesters[j] = NULL;
+						ihost->power_control.phys_waiting--;
+						sci_phy_consume_power_handler(requester);
+					}
+				}
+			}
+		}
 	}
 
 	/*
@@ -1891,9 +1964,34 @@
 		ihost->power_control.timer_started = true;
 
 	} else {
-		/* Add the phy in the waiting list */
-		ihost->power_control.requesters[iphy->phy_index] = iphy;
-		ihost->power_control.phys_waiting++;
+		/*
+		 * There are phys, attached to the same sas address as this phy, are
+		 * already in READY state, this phy don't need wait.
+		 */
+		u8 i;
+		struct isci_phy *current_phy;
+
+		for (i = 0; i < SCI_MAX_PHYS; i++) {
+			u8 other;
+			current_phy = &ihost->phys[i];
+
+			other = memcmp(current_phy->frame_rcvd.iaf.sas_addr,
+				       iphy->frame_rcvd.iaf.sas_addr,
+				       sizeof(current_phy->frame_rcvd.iaf.sas_addr));
+
+			if (current_phy->sm.current_state_id == SCI_PHY_READY &&
+			    current_phy->protocol == SCIC_SDS_PHY_PROTOCOL_SAS &&
+			    other == 0) {
+				sci_phy_consume_power_handler(iphy);
+				break;
+			}
+		}
+
+		if (i == SCI_MAX_PHYS) {
+			/* Add the phy in the waiting list */
+			ihost->power_control.requesters[iphy->phy_index] = iphy;
+			ihost->power_control.phys_waiting++;
+		}
 	}
 }
 
@@ -1908,162 +2006,250 @@
 	ihost->power_control.requesters[iphy->phy_index] = NULL;
 }
 
+static int is_long_cable(int phy, unsigned char selection_byte)
+{
+	return !!(selection_byte & (1 << phy));
+}
+
+static int is_medium_cable(int phy, unsigned char selection_byte)
+{
+	return !!(selection_byte & (1 << (phy + 4)));
+}
+
+static enum cable_selections decode_selection_byte(
+	int phy,
+	unsigned char selection_byte)
+{
+	return ((selection_byte & (1 << phy)) ? 1 : 0)
+		+ (selection_byte & (1 << (phy + 4)) ? 2 : 0);
+}
+
+static unsigned char *to_cable_select(struct isci_host *ihost)
+{
+	if (is_cable_select_overridden())
+		return ((unsigned char *)&cable_selection_override)
+			+ ihost->id;
+	else
+		return &ihost->oem_parameters.controller.cable_selection_mask;
+}
+
+enum cable_selections decode_cable_selection(struct isci_host *ihost, int phy)
+{
+	return decode_selection_byte(phy, *to_cable_select(ihost));
+}
+
+char *lookup_cable_names(enum cable_selections selection)
+{
+	static char *cable_names[] = {
+		[short_cable]     = "short",
+		[long_cable]      = "long",
+		[medium_cable]    = "medium",
+		[undefined_cable] = "<undefined, assumed long>" /* bit 0==1 */
+	};
+	return (selection <= undefined_cable) ? cable_names[selection]
+					      : cable_names[undefined_cable];
+}
+
 #define AFE_REGISTER_WRITE_DELAY 10
 
-/* Initialize the AFE for this phy index. We need to read the AFE setup from
- * the OEM parameters
- */
 static void sci_controller_afe_initialization(struct isci_host *ihost)
 {
+	struct scu_afe_registers __iomem *afe = &ihost->scu_registers->afe;
 	const struct sci_oem_params *oem = &ihost->oem_parameters;
 	struct pci_dev *pdev = ihost->pdev;
 	u32 afe_status;
 	u32 phy_id;
+	unsigned char cable_selection_mask = *to_cable_select(ihost);
 
 	/* Clear DFX Status registers */
-	writel(0x0081000f, &ihost->scu_registers->afe.afe_dfx_master_control0);
+	writel(0x0081000f, &afe->afe_dfx_master_control0);
 	udelay(AFE_REGISTER_WRITE_DELAY);
 
-	if (is_b0(pdev)) {
+	if (is_b0(pdev) || is_c0(pdev) || is_c1(pdev)) {
 		/* PM Rx Equalization Save, PM SPhy Rx Acknowledgement
-		 * Timer, PM Stagger Timer */
-		writel(0x0007BFFF, &ihost->scu_registers->afe.afe_pmsn_master_control2);
+		 * Timer, PM Stagger Timer
+		 */
+		writel(0x0007FFFF, &afe->afe_pmsn_master_control2);
 		udelay(AFE_REGISTER_WRITE_DELAY);
 	}
 
 	/* Configure bias currents to normal */
 	if (is_a2(pdev))
-		writel(0x00005A00, &ihost->scu_registers->afe.afe_bias_control);
+		writel(0x00005A00, &afe->afe_bias_control);
 	else if (is_b0(pdev) || is_c0(pdev))
-		writel(0x00005F00, &ihost->scu_registers->afe.afe_bias_control);
+		writel(0x00005F00, &afe->afe_bias_control);
+	else if (is_c1(pdev))
+		writel(0x00005500, &afe->afe_bias_control);
 
 	udelay(AFE_REGISTER_WRITE_DELAY);
 
 	/* Enable PLL */
-	if (is_b0(pdev) || is_c0(pdev))
-		writel(0x80040A08, &ihost->scu_registers->afe.afe_pll_control0);
-	else
-		writel(0x80040908, &ihost->scu_registers->afe.afe_pll_control0);
+	if (is_a2(pdev))
+		writel(0x80040908, &afe->afe_pll_control0);
+	else if (is_b0(pdev) || is_c0(pdev))
+		writel(0x80040A08, &afe->afe_pll_control0);
+	else if (is_c1(pdev)) {
+		writel(0x80000B08, &afe->afe_pll_control0);
+		udelay(AFE_REGISTER_WRITE_DELAY);
+		writel(0x00000B08, &afe->afe_pll_control0);
+		udelay(AFE_REGISTER_WRITE_DELAY);
+		writel(0x80000B08, &afe->afe_pll_control0);
+	}
 
 	udelay(AFE_REGISTER_WRITE_DELAY);
 
 	/* Wait for the PLL to lock */
 	do {
-		afe_status = readl(&ihost->scu_registers->afe.afe_common_block_status);
+		afe_status = readl(&afe->afe_common_block_status);
 		udelay(AFE_REGISTER_WRITE_DELAY);
 	} while ((afe_status & 0x00001000) == 0);
 
 	if (is_a2(pdev)) {
-		/* Shorten SAS SNW lock time (RxLock timer value from 76 us to 50 us) */
-		writel(0x7bcc96ad, &ihost->scu_registers->afe.afe_pmsn_master_control0);
+		/* Shorten SAS SNW lock time (RxLock timer value from 76
+		 * us to 50 us)
+		 */
+		writel(0x7bcc96ad, &afe->afe_pmsn_master_control0);
 		udelay(AFE_REGISTER_WRITE_DELAY);
 	}
 
 	for (phy_id = 0; phy_id < SCI_MAX_PHYS; phy_id++) {
+		struct scu_afe_transceiver *xcvr = &afe->scu_afe_xcvr[phy_id];
 		const struct sci_phy_oem_params *oem_phy = &oem->phys[phy_id];
+		int cable_length_long =
+			is_long_cable(phy_id, cable_selection_mask);
+		int cable_length_medium =
+			is_medium_cable(phy_id, cable_selection_mask);
 
-		if (is_b0(pdev)) {
-			 /* Configure transmitter SSC parameters */
-			writel(0x00030000, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_ssc_control);
+		if (is_a2(pdev)) {
+			/* All defaults, except the Receive Word
+			 * Alignament/Comma Detect Enable....(0xe800)
+			 */
+			writel(0x00004512, &xcvr->afe_xcvr_control0);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+
+			writel(0x0050100F, &xcvr->afe_xcvr_control1);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+		} else if (is_b0(pdev)) {
+			/* Configure transmitter SSC parameters */
+			writel(0x00030000, &xcvr->afe_tx_ssc_control);
 			udelay(AFE_REGISTER_WRITE_DELAY);
 		} else if (is_c0(pdev)) {
-			 /* Configure transmitter SSC parameters */
-			writel(0x0003000, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_ssc_control);
+			/* Configure transmitter SSC parameters */
+			writel(0x00010202, &xcvr->afe_tx_ssc_control);
 			udelay(AFE_REGISTER_WRITE_DELAY);
 
-			/*
-			 * All defaults, except the Receive Word Alignament/Comma Detect
-			 * Enable....(0xe800) */
-			writel(0x00004500, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_xcvr_control0);
+			/* All defaults, except the Receive Word
+			 * Alignament/Comma Detect Enable....(0xe800)
+			 */
+			writel(0x00014500, &xcvr->afe_xcvr_control0);
 			udelay(AFE_REGISTER_WRITE_DELAY);
-		} else {
-			/*
-			 * All defaults, except the Receive Word Alignament/Comma Detect
-			 * Enable....(0xe800) */
-			writel(0x00004512, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_xcvr_control0);
+		} else if (is_c1(pdev)) {
+			/* Configure transmitter SSC parameters */
+			writel(0x00010202, &xcvr->afe_tx_ssc_control);
 			udelay(AFE_REGISTER_WRITE_DELAY);
 
-			writel(0x0050100F, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_xcvr_control1);
+			/* All defaults, except the Receive Word
+			 * Alignament/Comma Detect Enable....(0xe800)
+			 */
+			writel(0x0001C500, &xcvr->afe_xcvr_control0);
 			udelay(AFE_REGISTER_WRITE_DELAY);
 		}
 
-		/*
-		 * Power up TX and RX out from power down (PWRDNTX and PWRDNRX)
-		 * & increase TX int & ext bias 20%....(0xe85c) */
+		/* Power up TX and RX out from power down (PWRDNTX and
+		 * PWRDNRX) & increase TX int & ext bias 20%....(0xe85c)
+		 */
 		if (is_a2(pdev))
-			writel(0x000003F0, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_channel_control);
+			writel(0x000003F0, &xcvr->afe_channel_control);
 		else if (is_b0(pdev)) {
-			 /* Power down TX and RX (PWRDNTX and PWRDNRX) */
-			writel(0x000003D7, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_channel_control);
+			writel(0x000003D7, &xcvr->afe_channel_control);
 			udelay(AFE_REGISTER_WRITE_DELAY);
 
-			/*
-			 * Power up TX and RX out from power down (PWRDNTX and PWRDNRX)
-			 * & increase TX int & ext bias 20%....(0xe85c) */
-			writel(0x000003D4, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_channel_control);
-		} else {
-			writel(0x000001E7, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_channel_control);
+			writel(0x000003D4, &xcvr->afe_channel_control);
+		} else if (is_c0(pdev)) {
+			writel(0x000001E7, &xcvr->afe_channel_control);
 			udelay(AFE_REGISTER_WRITE_DELAY);
 
-			/*
-			 * Power up TX and RX out from power down (PWRDNTX and PWRDNRX)
-			 * & increase TX int & ext bias 20%....(0xe85c) */
-			writel(0x000001E4, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_channel_control);
+			writel(0x000001E4, &xcvr->afe_channel_control);
+		} else if (is_c1(pdev)) {
+			writel(cable_length_long ? 0x000002F7 : 0x000001F7,
+			       &xcvr->afe_channel_control);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+
+			writel(cable_length_long ? 0x000002F4 : 0x000001F4,
+			       &xcvr->afe_channel_control);
 		}
 		udelay(AFE_REGISTER_WRITE_DELAY);
 
 		if (is_a2(pdev)) {
 			/* Enable TX equalization (0xe824) */
-			writel(0x00040000, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_control);
+			writel(0x00040000, &xcvr->afe_tx_control);
 			udelay(AFE_REGISTER_WRITE_DELAY);
 		}
 
-		/*
-		 * RDPI=0x0(RX Power On), RXOOBDETPDNC=0x0, TPD=0x0(TX Power On),
-		 * RDD=0x0(RX Detect Enabled) ....(0xe800) */
-		writel(0x00004100, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_xcvr_control0);
+		if (is_a2(pdev) || is_b0(pdev))
+			/* RDPI=0x0(RX Power On), RXOOBDETPDNC=0x0,
+			 * TPD=0x0(TX Power On), RDD=0x0(RX Detect
+			 * Enabled) ....(0xe800)
+			 */
+			writel(0x00004100, &xcvr->afe_xcvr_control0);
+		else if (is_c0(pdev))
+			writel(0x00014100, &xcvr->afe_xcvr_control0);
+		else if (is_c1(pdev))
+			writel(0x0001C100, &xcvr->afe_xcvr_control0);
 		udelay(AFE_REGISTER_WRITE_DELAY);
 
 		/* Leave DFE/FFE on */
 		if (is_a2(pdev))
-			writel(0x3F11103F, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_rx_ssc_control0);
+			writel(0x3F11103F, &xcvr->afe_rx_ssc_control0);
 		else if (is_b0(pdev)) {
-			writel(0x3F11103F, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_rx_ssc_control0);
+			writel(0x3F11103F, &xcvr->afe_rx_ssc_control0);
 			udelay(AFE_REGISTER_WRITE_DELAY);
 			/* Enable TX equalization (0xe824) */
-			writel(0x00040000, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_control);
-		} else {
-			writel(0x0140DF0F, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_rx_ssc_control1);
+			writel(0x00040000, &xcvr->afe_tx_control);
+		} else if (is_c0(pdev)) {
+			writel(0x01400C0F, &xcvr->afe_rx_ssc_control1);
 			udelay(AFE_REGISTER_WRITE_DELAY);
 
-			writel(0x3F6F103F, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_rx_ssc_control0);
+			writel(0x3F6F103F, &xcvr->afe_rx_ssc_control0);
 			udelay(AFE_REGISTER_WRITE_DELAY);
 
 			/* Enable TX equalization (0xe824) */
-			writel(0x00040000, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_control);
+			writel(0x00040000, &xcvr->afe_tx_control);
+		} else if (is_c1(pdev)) {
+			writel(cable_length_long ? 0x01500C0C :
+			       cable_length_medium ? 0x01400C0D : 0x02400C0D,
+			       &xcvr->afe_xcvr_control1);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+
+			writel(0x000003E0, &xcvr->afe_dfx_rx_control1);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+
+			writel(cable_length_long ? 0x33091C1F :
+			       cable_length_medium ? 0x3315181F : 0x2B17161F,
+			       &xcvr->afe_rx_ssc_control0);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+
+			/* Enable TX equalization (0xe824) */
+			writel(0x00040000, &xcvr->afe_tx_control);
 		}
 
 		udelay(AFE_REGISTER_WRITE_DELAY);
 
-		writel(oem_phy->afe_tx_amp_control0,
-			&ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_amp_control0);
+		writel(oem_phy->afe_tx_amp_control0, &xcvr->afe_tx_amp_control0);
 		udelay(AFE_REGISTER_WRITE_DELAY);
 
-		writel(oem_phy->afe_tx_amp_control1,
-			&ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_amp_control1);
+		writel(oem_phy->afe_tx_amp_control1, &xcvr->afe_tx_amp_control1);
 		udelay(AFE_REGISTER_WRITE_DELAY);
 
-		writel(oem_phy->afe_tx_amp_control2,
-			&ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_amp_control2);
+		writel(oem_phy->afe_tx_amp_control2, &xcvr->afe_tx_amp_control2);
 		udelay(AFE_REGISTER_WRITE_DELAY);
 
-		writel(oem_phy->afe_tx_amp_control3,
-			&ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_amp_control3);
+		writel(oem_phy->afe_tx_amp_control3, &xcvr->afe_tx_amp_control3);
 		udelay(AFE_REGISTER_WRITE_DELAY);
 	}
 
 	/* Transfer control to the PEs */
-	writel(0x00010f00, &ihost->scu_registers->afe.afe_dfx_master_control0);
+	writel(0x00010f00, &afe->afe_dfx_master_control0);
 	udelay(AFE_REGISTER_WRITE_DELAY);
 }
 
diff --git a/drivers/scsi/isci/host.h b/drivers/scsi/isci/host.h
index 646051a..5477f0f 100644
--- a/drivers/scsi/isci/host.h
+++ b/drivers/scsi/isci/host.h
@@ -435,11 +435,36 @@
 
 static inline bool is_c0(struct pci_dev *pdev)
 {
-	if (pdev->revision >= 5)
+	if (pdev->revision == 5)
 		return true;
 	return false;
 }
 
+static inline bool is_c1(struct pci_dev *pdev)
+{
+	if (pdev->revision >= 6)
+		return true;
+	return false;
+}
+
+enum cable_selections {
+	short_cable     = 0,
+	long_cable      = 1,
+	medium_cable    = 2,
+	undefined_cable = 3
+};
+
+#define CABLE_OVERRIDE_DISABLED (0x10000)
+
+static inline int is_cable_select_overridden(void)
+{
+	return cable_selection_override < CABLE_OVERRIDE_DISABLED;
+}
+
+enum cable_selections decode_cable_selection(struct isci_host *ihost, int phy);
+void validate_cable_selections(struct isci_host *ihost);
+char *lookup_cable_names(enum cable_selections);
+
 /* set hw control for 'activity', even though active enclosures seem to drive
  * the activity led on their own.  Skip setting FSENG control on 'status' due
  * to unexpected operation and 'error' due to not being a supported automatic
diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c
index a97edab..17c4c2c 100644
--- a/drivers/scsi/isci/init.c
+++ b/drivers/scsi/isci/init.c
@@ -65,7 +65,7 @@
 #include "probe_roms.h"
 
 #define MAJ 1
-#define MIN 0
+#define MIN 1
 #define BUILD 0
 #define DRV_VERSION __stringify(MAJ) "." __stringify(MIN) "." \
 	__stringify(BUILD)
@@ -94,7 +94,7 @@
 
 /* linux isci specific settings */
 
-unsigned char no_outbound_task_to = 20;
+unsigned char no_outbound_task_to = 2;
 module_param(no_outbound_task_to, byte, 0);
 MODULE_PARM_DESC(no_outbound_task_to, "No Outbound Task Timeout (1us incr)");
 
@@ -114,7 +114,7 @@
 module_param(stp_inactive_to, ushort, 0);
 MODULE_PARM_DESC(stp_inactive_to, "STP inactivity timeout (100us incr)");
 
-unsigned char phy_gen = 3;
+unsigned char phy_gen = SCIC_SDS_PARM_GEN2_SPEED;
 module_param(phy_gen, byte, 0);
 MODULE_PARM_DESC(phy_gen, "PHY generation (1: 1.5Gbps 2: 3.0Gbps 3: 6.0Gbps)");
 
@@ -122,6 +122,14 @@
 module_param(max_concurr_spinup, byte, 0);
 MODULE_PARM_DESC(max_concurr_spinup, "Max concurrent device spinup");
 
+uint cable_selection_override = CABLE_OVERRIDE_DISABLED;
+module_param(cable_selection_override, uint, 0);
+
+MODULE_PARM_DESC(cable_selection_override,
+		 "This field indicates length of the SAS/SATA cable between "
+		 "host and device. If any bits > 15 are set (default) "
+		 "indicates \"use platform defaults\"");
+
 static ssize_t isci_show_id(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	struct Scsi_Host *shost = container_of(dev, typeof(*shost), shost_dev);
@@ -412,6 +420,14 @@
 		return NULL;
 	isci_host->shost = shost;
 
+	dev_info(&pdev->dev, "%sSCU controller %d: phy 3-0 cables: "
+		 "{%s, %s, %s, %s}\n",
+		 (is_cable_select_overridden() ? "* " : ""), isci_host->id,
+		 lookup_cable_names(decode_cable_selection(isci_host, 3)),
+		 lookup_cable_names(decode_cable_selection(isci_host, 2)),
+		 lookup_cable_names(decode_cable_selection(isci_host, 1)),
+		 lookup_cable_names(decode_cable_selection(isci_host, 0)));
+
 	err = isci_host_init(isci_host);
 	if (err)
 		goto err_shost;
@@ -466,7 +482,8 @@
 		orom = isci_request_oprom(pdev);
 
 	for (i = 0; orom && i < ARRAY_SIZE(orom->ctrl); i++) {
-		if (sci_oem_parameters_validate(&orom->ctrl[i])) {
+		if (sci_oem_parameters_validate(&orom->ctrl[i],
+						orom->hdr.version)) {
 			dev_warn(&pdev->dev,
 				 "[%d]: invalid oem parameters detected, falling back to firmware\n", i);
 			devm_kfree(&pdev->dev, orom);
diff --git a/drivers/scsi/isci/isci.h b/drivers/scsi/isci/isci.h
index 8efeb6b..234ab46 100644
--- a/drivers/scsi/isci/isci.h
+++ b/drivers/scsi/isci/isci.h
@@ -480,6 +480,7 @@
 extern u16 stp_inactive_to;
 extern unsigned char phy_gen;
 extern unsigned char max_concurr_spinup;
+extern uint cable_selection_override;
 
 irqreturn_t isci_msix_isr(int vec, void *data);
 irqreturn_t isci_intx_isr(int vec, void *data);
diff --git a/drivers/scsi/isci/phy.c b/drivers/scsi/isci/phy.c
index 35f50c2..fe18acf 100644
--- a/drivers/scsi/isci/phy.c
+++ b/drivers/scsi/isci/phy.c
@@ -91,22 +91,23 @@
 
 static enum sci_status
 sci_phy_link_layer_initialization(struct isci_phy *iphy,
-				  struct scu_link_layer_registers __iomem *reg)
+				  struct scu_link_layer_registers __iomem *llr)
 {
 	struct isci_host *ihost = iphy->owning_port->owning_controller;
+	struct sci_phy_user_params *phy_user;
+	struct sci_phy_oem_params *phy_oem;
 	int phy_idx = iphy->phy_index;
-	struct sci_phy_user_params *phy_user = &ihost->user_parameters.phys[phy_idx];
-	struct sci_phy_oem_params *phy_oem =
-		&ihost->oem_parameters.phys[phy_idx];
-	u32 phy_configuration;
 	struct sci_phy_cap phy_cap;
+	u32 phy_configuration;
 	u32 parity_check = 0;
 	u32 parity_count = 0;
 	u32 llctl, link_rate;
 	u32 clksm_value = 0;
 	u32 sp_timeouts = 0;
 
-	iphy->link_layer_registers = reg;
+	phy_user = &ihost->user_parameters.phys[phy_idx];
+	phy_oem = &ihost->oem_parameters.phys[phy_idx];
+	iphy->link_layer_registers = llr;
 
 	/* Set our IDENTIFY frame data */
 	#define SCI_END_DEVICE 0x01
@@ -116,32 +117,26 @@
 	       SCU_SAS_TIID_GEN_BIT(STP_INITIATOR) |
 	       SCU_SAS_TIID_GEN_BIT(DA_SATA_HOST) |
 	       SCU_SAS_TIID_GEN_VAL(DEVICE_TYPE, SCI_END_DEVICE),
-	       &iphy->link_layer_registers->transmit_identification);
+	       &llr->transmit_identification);
 
 	/* Write the device SAS Address */
-	writel(0xFEDCBA98,
-	       &iphy->link_layer_registers->sas_device_name_high);
-	writel(phy_idx, &iphy->link_layer_registers->sas_device_name_low);
+	writel(0xFEDCBA98, &llr->sas_device_name_high);
+	writel(phy_idx, &llr->sas_device_name_low);
 
 	/* Write the source SAS Address */
-	writel(phy_oem->sas_address.high,
-		&iphy->link_layer_registers->source_sas_address_high);
-	writel(phy_oem->sas_address.low,
-		&iphy->link_layer_registers->source_sas_address_low);
+	writel(phy_oem->sas_address.high, &llr->source_sas_address_high);
+	writel(phy_oem->sas_address.low, &llr->source_sas_address_low);
 
 	/* Clear and Set the PHY Identifier */
-	writel(0, &iphy->link_layer_registers->identify_frame_phy_id);
-	writel(SCU_SAS_TIPID_GEN_VALUE(ID, phy_idx),
-		&iphy->link_layer_registers->identify_frame_phy_id);
+	writel(0, &llr->identify_frame_phy_id);
+	writel(SCU_SAS_TIPID_GEN_VALUE(ID, phy_idx), &llr->identify_frame_phy_id);
 
 	/* Change the initial state of the phy configuration register */
-	phy_configuration =
-		readl(&iphy->link_layer_registers->phy_configuration);
+	phy_configuration = readl(&llr->phy_configuration);
 
 	/* Hold OOB state machine in reset */
 	phy_configuration |=  SCU_SAS_PCFG_GEN_BIT(OOB_RESET);
-	writel(phy_configuration,
-		&iphy->link_layer_registers->phy_configuration);
+	writel(phy_configuration, &llr->phy_configuration);
 
 	/* Configure the SNW capabilities */
 	phy_cap.all = 0;
@@ -149,15 +144,64 @@
 	phy_cap.gen3_no_ssc = 1;
 	phy_cap.gen2_no_ssc = 1;
 	phy_cap.gen1_no_ssc = 1;
-	if (ihost->oem_parameters.controller.do_enable_ssc == true) {
+	if (ihost->oem_parameters.controller.do_enable_ssc) {
+		struct scu_afe_registers __iomem *afe = &ihost->scu_registers->afe;
+		struct scu_afe_transceiver *xcvr = &afe->scu_afe_xcvr[phy_idx];
+		struct isci_pci_info *pci_info = to_pci_info(ihost->pdev);
+		bool en_sas = false;
+		bool en_sata = false;
+		u32 sas_type = 0;
+		u32 sata_spread = 0x2;
+		u32 sas_spread = 0x2;
+
 		phy_cap.gen3_ssc = 1;
 		phy_cap.gen2_ssc = 1;
 		phy_cap.gen1_ssc = 1;
+
+		if (pci_info->orom->hdr.version < ISCI_ROM_VER_1_1)
+			en_sas = en_sata = true;
+		else {
+			sata_spread = ihost->oem_parameters.controller.ssc_sata_tx_spread_level;
+			sas_spread = ihost->oem_parameters.controller.ssc_sas_tx_spread_level;
+
+			if (sata_spread)
+				en_sata = true;
+
+			if (sas_spread) {
+				en_sas = true;
+				sas_type = ihost->oem_parameters.controller.ssc_sas_tx_type;
+			}
+
+		}
+
+		if (en_sas) {
+			u32 reg;
+
+			reg = readl(&xcvr->afe_xcvr_control0);
+			reg |= (0x00100000 | (sas_type << 19));
+			writel(reg, &xcvr->afe_xcvr_control0);
+
+			reg = readl(&xcvr->afe_tx_ssc_control);
+			reg |= sas_spread << 8;
+			writel(reg, &xcvr->afe_tx_ssc_control);
+		}
+
+		if (en_sata) {
+			u32 reg;
+
+			reg = readl(&xcvr->afe_tx_ssc_control);
+			reg |= sata_spread;
+			writel(reg, &xcvr->afe_tx_ssc_control);
+
+			reg = readl(&llr->stp_control);
+			reg |= 1 << 12;
+			writel(reg, &llr->stp_control);
+		}
 	}
 
-	/*
-	 * The SAS specification indicates that the phy_capabilities that
-	 * are transmitted shall have an even parity.  Calculate the parity. */
+	/* The SAS specification indicates that the phy_capabilities that
+	 * are transmitted shall have an even parity.  Calculate the parity.
+	 */
 	parity_check = phy_cap.all;
 	while (parity_check != 0) {
 		if (parity_check & 0x1)
@@ -165,20 +209,20 @@
 		parity_check >>= 1;
 	}
 
-	/*
-	 * If parity indicates there are an odd number of bits set, then
-	 * set the parity bit to 1 in the phy capabilities. */
+	/* If parity indicates there are an odd number of bits set, then
+	 * set the parity bit to 1 in the phy capabilities.
+	 */
 	if ((parity_count % 2) != 0)
 		phy_cap.parity = 1;
 
-	writel(phy_cap.all, &iphy->link_layer_registers->phy_capabilities);
+	writel(phy_cap.all, &llr->phy_capabilities);
 
 	/* Set the enable spinup period but disable the ability to send
 	 * notify enable spinup
 	 */
 	writel(SCU_ENSPINUP_GEN_VAL(COUNT,
 			phy_user->notify_enable_spin_up_insertion_frequency),
-		&iphy->link_layer_registers->notify_enable_spinup_control);
+		&llr->notify_enable_spinup_control);
 
 	/* Write the ALIGN Insertion Ferequency for connected phy and
 	 * inpendent of connected state
@@ -189,11 +233,13 @@
 	clksm_value |= SCU_ALIGN_INSERTION_FREQUENCY_GEN_VAL(GENERAL,
 			phy_user->align_insertion_frequency);
 
-	writel(clksm_value, &iphy->link_layer_registers->clock_skew_management);
+	writel(clksm_value, &llr->clock_skew_management);
 
-	/* @todo Provide a way to write this register correctly */
-	writel(0x02108421,
-		&iphy->link_layer_registers->afe_lookup_table_control);
+	if (is_c0(ihost->pdev) || is_c1(ihost->pdev)) {
+		writel(0x04210400, &llr->afe_lookup_table_control);
+		writel(0x020A7C05, &llr->sas_primitive_timeout);
+	} else
+		writel(0x02108421, &llr->afe_lookup_table_control);
 
 	llctl = SCU_SAS_LLCTL_GEN_VAL(NO_OUTBOUND_TASK_TIMEOUT,
 		(u8)ihost->user_parameters.no_outbound_task_timeout);
@@ -210,9 +256,9 @@
 		break;
 	}
 	llctl |= SCU_SAS_LLCTL_GEN_VAL(MAX_LINK_RATE, link_rate);
-	writel(llctl, &iphy->link_layer_registers->link_layer_control);
+	writel(llctl, &llr->link_layer_control);
 
-	sp_timeouts = readl(&iphy->link_layer_registers->sas_phy_timeouts);
+	sp_timeouts = readl(&llr->sas_phy_timeouts);
 
 	/* Clear the default 0x36 (54us) RATE_CHANGE timeout value. */
 	sp_timeouts &= ~SCU_SAS_PHYTOV_GEN_VAL(RATE_CHANGE, 0xFF);
@@ -222,20 +268,23 @@
 	 */
 	sp_timeouts |= SCU_SAS_PHYTOV_GEN_VAL(RATE_CHANGE, 0x3B);
 
-	writel(sp_timeouts, &iphy->link_layer_registers->sas_phy_timeouts);
+	writel(sp_timeouts, &llr->sas_phy_timeouts);
 
 	if (is_a2(ihost->pdev)) {
-		/* Program the max ARB time for the PHY to 700us so we inter-operate with
-		 * the PMC expander which shuts down PHYs if the expander PHY generates too
-		 * many breaks.  This time value will guarantee that the initiator PHY will
-		 * generate the break.
+		/* Program the max ARB time for the PHY to 700us so we
+		 * inter-operate with the PMC expander which shuts down
+		 * PHYs if the expander PHY generates too many breaks.
+		 * This time value will guarantee that the initiator PHY
+		 * will generate the break.
 		 */
 		writel(SCIC_SDS_PHY_MAX_ARBITRATION_WAIT_TIME,
-			&iphy->link_layer_registers->maximum_arbitration_wait_timer_timeout);
+		       &llr->maximum_arbitration_wait_timer_timeout);
 	}
 
-	/* Disable link layer hang detection, rely on the OS timeout for I/O timeouts. */
-	writel(0, &iphy->link_layer_registers->link_layer_hang_detection_timeout);
+	/* Disable link layer hang detection, rely on the OS timeout for
+	 * I/O timeouts.
+	 */
+	writel(0, &llr->link_layer_hang_detection_timeout);
 
 	/* We can exit the initial state to the stopped state */
 	sci_change_state(&iphy->sm, SCI_PHY_STOPPED);
@@ -1049,24 +1098,25 @@
 	writel(enable_spinup_value, &iphy->link_layer_registers->notify_enable_spinup_control);
 }
 
-/**
- *
- *
- * This method will start the OOB/SN state machine for this struct isci_phy object.
- */
-static void scu_link_layer_start_oob(
-	struct isci_phy *iphy)
+static void scu_link_layer_start_oob(struct isci_phy *iphy)
 {
-	u32 scu_sas_pcfg_value;
+	struct scu_link_layer_registers __iomem *ll = iphy->link_layer_registers;
+	u32 val;
 
-	scu_sas_pcfg_value =
-		readl(&iphy->link_layer_registers->phy_configuration);
-	scu_sas_pcfg_value |= SCU_SAS_PCFG_GEN_BIT(OOB_ENABLE);
-	scu_sas_pcfg_value &=
-		~(SCU_SAS_PCFG_GEN_BIT(OOB_RESET) |
-		SCU_SAS_PCFG_GEN_BIT(HARD_RESET));
-	writel(scu_sas_pcfg_value,
-	       &iphy->link_layer_registers->phy_configuration);
+	/** Reset OOB sequence - start */
+	val = readl(&ll->phy_configuration);
+	val &= ~(SCU_SAS_PCFG_GEN_BIT(OOB_RESET) |
+		 SCU_SAS_PCFG_GEN_BIT(HARD_RESET));
+	writel(val, &ll->phy_configuration);
+	readl(&ll->phy_configuration); /* flush */
+	/** Reset OOB sequence - end */
+
+	/** Start OOB sequence - start */
+	val = readl(&ll->phy_configuration);
+	val |= SCU_SAS_PCFG_GEN_BIT(OOB_ENABLE);
+	writel(val, &ll->phy_configuration);
+	readl(&ll->phy_configuration); /* flush */
+	/** Start OOB sequence - end */
 }
 
 /**
diff --git a/drivers/scsi/isci/port.c b/drivers/scsi/isci/port.c
index ac7f277..7c6ac58 100644
--- a/drivers/scsi/isci/port.c
+++ b/drivers/scsi/isci/port.c
@@ -114,7 +114,7 @@
  * value is returned if the specified port is not valid.  When this value is
  * returned, no data is copied to the properties output parameter.
  */
-static enum sci_status sci_port_get_properties(struct isci_port *iport,
+enum sci_status sci_port_get_properties(struct isci_port *iport,
 						struct sci_port_properties *prop)
 {
 	if (!iport || iport->logical_port_index == SCIC_SDS_DUMMY_PORT)
@@ -647,19 +647,26 @@
 	}
 }
 
-static void sci_port_activate_phy(struct isci_port *iport, struct isci_phy *iphy,
-				  bool do_notify_user)
+static void sci_port_resume_phy(struct isci_port *iport, struct isci_phy *iphy)
+{
+	sci_phy_resume(iphy);
+	iport->enabled_phy_mask |= 1 << iphy->phy_index;
+}
+
+static void sci_port_activate_phy(struct isci_port *iport,
+				  struct isci_phy *iphy,
+				  u8 flags)
 {
 	struct isci_host *ihost = iport->owning_controller;
 
-	if (iphy->protocol != SCIC_SDS_PHY_PROTOCOL_SATA)
+	if (iphy->protocol != SCIC_SDS_PHY_PROTOCOL_SATA && (flags & PF_RESUME))
 		sci_phy_resume(iphy);
 
 	iport->active_phy_mask |= 1 << iphy->phy_index;
 
 	sci_controller_clear_invalid_phy(ihost, iphy);
 
-	if (do_notify_user == true)
+	if (flags & PF_NOTIFY)
 		isci_port_link_up(ihost, iport, iphy);
 }
 
@@ -669,14 +676,19 @@
 	struct isci_host *ihost = iport->owning_controller;
 
 	iport->active_phy_mask &= ~(1 << iphy->phy_index);
+	iport->enabled_phy_mask &= ~(1 << iphy->phy_index);
 	if (!iport->active_phy_mask)
 		iport->last_active_phy = iphy->phy_index;
 
 	iphy->max_negotiated_speed = SAS_LINK_RATE_UNKNOWN;
 
-	/* Re-assign the phy back to the LP as if it were a narrow port */
-	writel(iphy->phy_index,
-		&iport->port_pe_configuration_register[iphy->phy_index]);
+	/* Re-assign the phy back to the LP as if it were a narrow port for APC
+	 * mode. For MPC mode, the phy will remain in the port.
+	 */
+	if (iport->owning_controller->oem_parameters.controller.mode_type ==
+		SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE)
+		writel(iphy->phy_index,
+			&iport->port_pe_configuration_register[iphy->phy_index]);
 
 	if (do_notify_user == true)
 		isci_port_link_down(ihost, iphy, iport);
@@ -701,18 +713,16 @@
  * sci_port_general_link_up_handler - phy can be assigned to port?
  * @sci_port: sci_port object for which has a phy that has gone link up.
  * @sci_phy: This is the struct isci_phy object that has gone link up.
- * @do_notify_user: This parameter specifies whether to inform the user (via
- *    sci_port_link_up()) as to the fact that a new phy as become ready.
+ * @flags: PF_RESUME, PF_NOTIFY to sci_port_activate_phy
  *
- * Determine if this phy can be assigned to this
- * port . If the phy is not a valid PHY for
- * this port then the function will notify the user. A PHY can only be
- * part of a port if it's attached SAS ADDRESS is the same as all other PHYs in
- * the same port. none
+ * Determine if this phy can be assigned to this port . If the phy is
+ * not a valid PHY for this port then the function will notify the user.
+ * A PHY can only be part of a port if it's attached SAS ADDRESS is the
+ * same as all other PHYs in the same port.
  */
 static void sci_port_general_link_up_handler(struct isci_port *iport,
-						  struct isci_phy *iphy,
-						  bool do_notify_user)
+					     struct isci_phy *iphy,
+					     u8 flags)
 {
 	struct sci_sas_address port_sas_address;
 	struct sci_sas_address phy_sas_address;
@@ -730,7 +740,7 @@
 	    iport->active_phy_mask == 0) {
 		struct sci_base_state_machine *sm = &iport->sm;
 
-		sci_port_activate_phy(iport, iphy, do_notify_user);
+		sci_port_activate_phy(iport, iphy, flags);
 		if (sm->current_state_id == SCI_PORT_RESETTING)
 			port_state_machine_change(iport, SCI_PORT_READY);
 	} else
@@ -781,11 +791,16 @@
 	struct isci_phy *iphy)
 {
 	if ((iport->logical_port_index != SCIC_SDS_DUMMY_PORT) &&
-	    (iphy->protocol == SCIC_SDS_PHY_PROTOCOL_SATA) &&
-	    sci_port_is_wide(iport)) {
-		sci_port_invalid_link_up(iport, iphy);
-
-		return false;
+	    (iphy->protocol == SCIC_SDS_PHY_PROTOCOL_SATA)) {
+		if (sci_port_is_wide(iport)) {
+			sci_port_invalid_link_up(iport, iphy);
+			return false;
+		} else {
+			struct isci_host *ihost = iport->owning_controller;
+			struct isci_port *dst_port = &(ihost->ports[iphy->phy_index]);
+			writel(iphy->phy_index,
+			       &dst_port->port_pe_configuration_register[iphy->phy_index]);
+		}
 	}
 
 	return true;
@@ -975,6 +990,13 @@
 	}
 }
 
+static void scic_sds_port_ready_substate_waiting_exit(
+					struct sci_base_state_machine *sm)
+{
+	struct isci_port *iport = container_of(sm, typeof(*iport), sm);
+	sci_port_resume_port_task_scheduler(iport);
+}
+
 static void sci_port_ready_substate_operational_enter(struct sci_base_state_machine *sm)
 {
 	u32 index;
@@ -988,13 +1010,13 @@
 			writel(iport->physical_port_index,
 				&iport->port_pe_configuration_register[
 					iport->phy_table[index]->phy_index]);
+			if (((iport->active_phy_mask^iport->enabled_phy_mask) & (1 << index)) != 0)
+				sci_port_resume_phy(iport, iport->phy_table[index]);
 		}
 	}
 
 	sci_port_update_viit_entry(iport);
 
-	sci_port_resume_port_task_scheduler(iport);
-
 	/*
 	 * Post the dummy task for the port so the hardware can schedule
 	 * io correctly
@@ -1061,20 +1083,9 @@
 	if (iport->active_phy_mask == 0) {
 		isci_port_not_ready(ihost, iport);
 
-		port_state_machine_change(iport,
-					  SCI_PORT_SUB_WAITING);
-	} else if (iport->started_request_count == 0)
-		port_state_machine_change(iport,
-					  SCI_PORT_SUB_OPERATIONAL);
-}
-
-static void sci_port_ready_substate_configuring_exit(struct sci_base_state_machine *sm)
-{
-	struct isci_port *iport = container_of(sm, typeof(*iport), sm);
-
-	sci_port_suspend_port_task_scheduler(iport);
-	if (iport->ready_exit)
-		sci_port_invalidate_dummy_remote_node(iport);
+		port_state_machine_change(iport, SCI_PORT_SUB_WAITING);
+	} else
+		port_state_machine_change(iport, SCI_PORT_SUB_OPERATIONAL);
 }
 
 enum sci_status sci_port_start(struct isci_port *iport)
@@ -1252,7 +1263,7 @@
 		if (status != SCI_SUCCESS)
 			return status;
 
-		sci_port_general_link_up_handler(iport, iphy, true);
+		sci_port_general_link_up_handler(iport, iphy, PF_NOTIFY|PF_RESUME);
 		iport->not_ready_reason = SCIC_PORT_NOT_READY_RECONFIGURING;
 		port_state_machine_change(iport, SCI_PORT_SUB_CONFIGURING);
 
@@ -1262,7 +1273,7 @@
 
 		if (status != SCI_SUCCESS)
 			return status;
-		sci_port_general_link_up_handler(iport, iphy, true);
+		sci_port_general_link_up_handler(iport, iphy, PF_NOTIFY);
 
 		/* Re-enter the configuring state since this may be the last phy in
 		 * the port.
@@ -1338,13 +1349,13 @@
 		/* Since this is the first phy going link up for the port we
 		 * can just enable it and continue
 		 */
-		sci_port_activate_phy(iport, iphy, true);
+		sci_port_activate_phy(iport, iphy, PF_NOTIFY|PF_RESUME);
 
 		port_state_machine_change(iport,
 					  SCI_PORT_SUB_OPERATIONAL);
 		return SCI_SUCCESS;
 	case SCI_PORT_SUB_OPERATIONAL:
-		sci_port_general_link_up_handler(iport, iphy, true);
+		sci_port_general_link_up_handler(iport, iphy, PF_NOTIFY|PF_RESUME);
 		return SCI_SUCCESS;
 	case SCI_PORT_RESETTING:
 		/* TODO We should  make  sure  that  the phy  that  has gone
@@ -1361,7 +1372,7 @@
 		/* In the resetting state we don't notify the user regarding
 		 * link up and link down notifications.
 		 */
-		sci_port_general_link_up_handler(iport, iphy, false);
+		sci_port_general_link_up_handler(iport, iphy, PF_RESUME);
 		return SCI_SUCCESS;
 	default:
 		dev_warn(sciport_to_dev(iport),
@@ -1584,14 +1595,14 @@
 	},
 	[SCI_PORT_SUB_WAITING] = {
 		.enter_state = sci_port_ready_substate_waiting_enter,
+		.exit_state  = scic_sds_port_ready_substate_waiting_exit,
 	},
 	[SCI_PORT_SUB_OPERATIONAL] = {
 		.enter_state = sci_port_ready_substate_operational_enter,
 		.exit_state  = sci_port_ready_substate_operational_exit
 	},
 	[SCI_PORT_SUB_CONFIGURING] = {
-		.enter_state = sci_port_ready_substate_configuring_enter,
-		.exit_state  = sci_port_ready_substate_configuring_exit
+		.enter_state = sci_port_ready_substate_configuring_enter
 	},
 	[SCI_PORT_RESETTING] = {
 		.exit_state  = sci_port_resetting_state_exit
@@ -1609,6 +1620,7 @@
 	iport->logical_port_index  = SCIC_SDS_DUMMY_PORT;
 	iport->physical_port_index = index;
 	iport->active_phy_mask     = 0;
+	iport->enabled_phy_mask    = 0;
 	iport->last_active_phy     = 0;
 	iport->ready_exit	   = false;
 
diff --git a/drivers/scsi/isci/port.h b/drivers/scsi/isci/port.h
index cb5ffbc..0811609 100644
--- a/drivers/scsi/isci/port.h
+++ b/drivers/scsi/isci/port.h
@@ -63,6 +63,9 @@
 
 #define SCIC_SDS_DUMMY_PORT   0xFF
 
+#define PF_NOTIFY (1 << 0)
+#define PF_RESUME (1 << 1)
+
 struct isci_phy;
 struct isci_host;
 
@@ -83,6 +86,8 @@
  * @logical_port_index: software port index
  * @physical_port_index: hardware port index
  * @active_phy_mask: identifies phy members
+ * @enabled_phy_mask: phy mask for the port
+ *                    that are already part of the port
  * @reserved_tag:
  * @reserved_rni: reserver for port task scheduler workaround
  * @started_request_count: reference count for outstanding commands
@@ -104,6 +109,7 @@
 	u8 logical_port_index;
 	u8 physical_port_index;
 	u8 active_phy_mask;
+	u8 enabled_phy_mask;
 	u8 last_active_phy;
 	u16 reserved_rni;
 	u16 reserved_tag;
@@ -250,6 +256,10 @@
 	struct isci_port *iport,
 	struct isci_phy *iphy);
 
+enum sci_status sci_port_get_properties(
+	struct isci_port *iport,
+	struct sci_port_properties *prop);
+
 enum sci_status sci_port_link_up(struct isci_port *iport,
 				      struct isci_phy *iphy);
 enum sci_status sci_port_link_down(struct isci_port *iport,
diff --git a/drivers/scsi/isci/port_config.c b/drivers/scsi/isci/port_config.c
index 38a99d2..6d1e954 100644
--- a/drivers/scsi/isci/port_config.c
+++ b/drivers/scsi/isci/port_config.c
@@ -57,7 +57,7 @@
 
 #define SCIC_SDS_MPC_RECONFIGURATION_TIMEOUT    (10)
 #define SCIC_SDS_APC_RECONFIGURATION_TIMEOUT    (10)
-#define SCIC_SDS_APC_WAIT_LINK_UP_NOTIFICATION  (100)
+#define SCIC_SDS_APC_WAIT_LINK_UP_NOTIFICATION  (250)
 
 enum SCIC_SDS_APC_ACTIVITY {
 	SCIC_SDS_APC_SKIP_PHY,
@@ -466,6 +466,23 @@
 	return sci_port_configuration_agent_validate_ports(ihost, port_agent);
 }
 
+/*
+ * This routine will restart the automatic port configuration timeout
+ * timer for the next time period. This could be caused by either a link
+ * down event or a link up event where we can not yet tell to which a phy
+ * belongs.
+ */
+static void sci_apc_agent_start_timer(
+	struct sci_port_configuration_agent *port_agent,
+	u32 timeout)
+{
+	if (port_agent->timer_pending)
+		sci_del_timer(&port_agent->timer);
+
+	port_agent->timer_pending = true;
+	sci_mod_timer(&port_agent->timer, timeout);
+}
+
 static void sci_apc_agent_configure_ports(struct isci_host *ihost,
 					       struct sci_port_configuration_agent *port_agent,
 					       struct isci_phy *iphy,
@@ -565,17 +582,8 @@
 		break;
 
 	case SCIC_SDS_APC_START_TIMER:
-		/*
-		 * This can occur for either a link down event, or a link
-		 * up event where we cannot yet tell the port to which a
-		 * phy belongs.
-		 */
-		if (port_agent->timer_pending)
-			sci_del_timer(&port_agent->timer);
-
-		port_agent->timer_pending = true;
-		sci_mod_timer(&port_agent->timer,
-			      SCIC_SDS_APC_WAIT_LINK_UP_NOTIFICATION);
+		sci_apc_agent_start_timer(port_agent,
+					  SCIC_SDS_APC_WAIT_LINK_UP_NOTIFICATION);
 		break;
 
 	case SCIC_SDS_APC_SKIP_PHY:
@@ -607,7 +615,8 @@
 	if (!iport) {
 		/* the phy is not the part of this port */
 		port_agent->phy_ready_mask |= 1 << phy_index;
-		sci_apc_agent_configure_ports(ihost, port_agent, iphy, true);
+		sci_apc_agent_start_timer(port_agent,
+					  SCIC_SDS_APC_WAIT_LINK_UP_NOTIFICATION);
 	} else {
 		/* the phy is already the part of the port */
 		u32 port_state = iport->sm.current_state_id;
diff --git a/drivers/scsi/isci/probe_roms.c b/drivers/scsi/isci/probe_roms.c
index b5f4341..9b8117b 100644
--- a/drivers/scsi/isci/probe_roms.c
+++ b/drivers/scsi/isci/probe_roms.c
@@ -147,7 +147,7 @@
 
 	memcpy(orom, fw->data, fw->size);
 
-	if (is_c0(pdev))
+	if (is_c0(pdev) || is_c1(pdev))
 		goto out;
 
 	/*
diff --git a/drivers/scsi/isci/probe_roms.h b/drivers/scsi/isci/probe_roms.h
index 2c75248..bb0e9d4 100644
--- a/drivers/scsi/isci/probe_roms.h
+++ b/drivers/scsi/isci/probe_roms.h
@@ -152,7 +152,7 @@
 #define MAX_CONCURRENT_DEVICE_SPIN_UP_COUNT 4
 
 struct sci_oem_params;
-int sci_oem_parameters_validate(struct sci_oem_params *oem);
+int sci_oem_parameters_validate(struct sci_oem_params *oem, u8 version);
 
 struct isci_orom;
 struct isci_orom *isci_request_oprom(struct pci_dev *pdev);
@@ -191,6 +191,11 @@
 			0x1a, 0x04, 0xc6)
 #define ISCI_EFI_VAR_NAME	"RstScuO"
 
+#define ISCI_ROM_VER_1_0	0x10
+#define ISCI_ROM_VER_1_1	0x11
+#define ISCI_ROM_VER_1_3	0x13
+#define ISCI_ROM_VER_LATEST	ISCI_ROM_VER_1_3
+
 /* Allowed PORT configuration modes APC Automatic PORT configuration mode is
  * defined by the OEM configuration parameters providing no PHY_MASK parameters
  * for any PORT. i.e. There are no phys assigned to any of the ports at start.
@@ -220,8 +225,86 @@
 	struct {
 		uint8_t mode_type;
 		uint8_t max_concurr_spin_up;
-		uint8_t do_enable_ssc;
-		uint8_t reserved;
+		/*
+		 * This bitfield indicates the OEM's desired default Tx
+		 * Spread Spectrum Clocking (SSC) settings for SATA and SAS.
+		 * NOTE: Default SSC Modulation Frequency is 31.5KHz.
+		 */
+		union {
+			struct {
+			/*
+			 * NOTE: Max spread for SATA is +0 / -5000 PPM.
+			 * Down-spreading SSC (only method allowed for SATA):
+			 *  SATA SSC Tx Disabled                    = 0x0
+			 *  SATA SSC Tx at +0 / -1419 PPM Spread    = 0x2
+			 *  SATA SSC Tx at +0 / -2129 PPM Spread    = 0x3
+			 *  SATA SSC Tx at +0 / -4257 PPM Spread    = 0x6
+			 *  SATA SSC Tx at +0 / -4967 PPM Spread    = 0x7
+			 */
+				uint8_t ssc_sata_tx_spread_level:4;
+			/*
+			 * SAS SSC Tx Disabled                     = 0x0
+			 *
+			 * NOTE: Max spread for SAS down-spreading +0 /
+			 *	 -2300 PPM
+			 * Down-spreading SSC:
+			 *  SAS SSC Tx at +0 / -1419 PPM Spread     = 0x2
+			 *  SAS SSC Tx at +0 / -2129 PPM Spread     = 0x3
+			 *
+			 * NOTE: Max spread for SAS center-spreading +2300 /
+			 *	 -2300 PPM
+			 * Center-spreading SSC:
+			 *  SAS SSC Tx at +1064 / -1064 PPM Spread  = 0x3
+			 *  SAS SSC Tx at +2129 / -2129 PPM Spread  = 0x6
+			 */
+				uint8_t ssc_sas_tx_spread_level:3;
+			/*
+			 * NOTE: Refer to the SSC section of the SAS 2.x
+			 * Specification for proper setting of this field.
+			 * For standard SAS Initiator SAS PHY operation it
+			 * should be 0 for Down-spreading.
+			 * SAS SSC Tx spread type:
+			 *  Down-spreading SSC      = 0
+			 *  Center-spreading SSC    = 1
+			 */
+				uint8_t ssc_sas_tx_type:1;
+			};
+			uint8_t do_enable_ssc;
+		};
+		/*
+		 * This field indicates length of the SAS/SATA cable between
+		 * host and device.
+		 * This field is used make relationship between analog
+		 * parameters of the phy in the silicon and length of the cable.
+		 * Supported cable attenuation levels:
+		 * "short"- up to 3m, "medium"-3m to 6m, and "long"- more than
+		 * 6m.
+		 *
+		 * This is bit mask field:
+		 *
+		 * BIT:      (MSB) 7     6     5     4
+		 * ASSIGNMENT:   <phy3><phy2><phy1><phy0>  - Medium cable
+		 *                                           length assignment
+		 * BIT:            3     2     1     0  (LSB)
+		 * ASSIGNMENT:   <phy3><phy2><phy1><phy0>  - Long cable length
+		 *                                           assignment
+		 *
+		 * BITS 7-4 are set when the cable length is assigned to medium
+		 * BITS 3-0 are set when the cable length is assigned to long
+		 *
+		 * The BIT positions are clear when the cable length is
+		 * assigned to short.
+		 *
+		 * Setting the bits for both long and medium cable length is
+		 * undefined.
+		 *
+		 * A value of 0x84 would assign
+		 *    phy3 - medium
+		 *    phy2 - long
+		 *    phy1 - short
+		 *    phy0 - short
+		 */
+		uint8_t cable_selection_mask;
 	} controller;
 
 	struct {
diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c
index b207cd3..dd74b6c 100644
--- a/drivers/scsi/isci/remote_device.c
+++ b/drivers/scsi/isci/remote_device.c
@@ -53,6 +53,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 #include <scsi/sas.h>
+#include <linux/bitops.h>
 #include "isci.h"
 #include "port.h"
 #include "remote_device.h"
@@ -1101,6 +1102,7 @@
 						       struct isci_remote_device *idev)
 {
 	enum sci_status status;
+	struct sci_port_properties properties;
 	struct domain_device *dev = idev->domain_dev;
 
 	sci_remote_device_construct(iport, idev);
@@ -1110,6 +1112,11 @@
 	 * entries will be needed to store the remote node.
 	 */
 	idev->is_direct_attached = true;
+
+	sci_port_get_properties(iport, &properties);
+	/* Get accurate port width from port's phy mask for a DA device. */
+	idev->device_port_width = hweight32(properties.phy_mask);
+
 	status = sci_controller_allocate_remote_node_context(iport->owning_controller,
 								  idev,
 								  &idev->rnc.remote_node_index);
@@ -1125,9 +1132,6 @@
 
 	idev->connection_rate = sci_port_get_max_allowed_speed(iport);
 
-	/* / @todo Should I assign the port width by reading all of the phys on the port? */
-	idev->device_port_width = 1;
-
 	return SCI_SUCCESS;
 }
 
diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c
index 66ad3dc..f5a3f7d 100644
--- a/drivers/scsi/isci/task.c
+++ b/drivers/scsi/isci/task.c
@@ -496,7 +496,7 @@
 		}
 	}
 
-	isci_print_tmf(tmf);
+	isci_print_tmf(ihost, tmf);
 
 	if (tmf->status == SCI_SUCCESS)
 		ret =  TMF_RESP_FUNC_COMPLETE;
diff --git a/drivers/scsi/isci/task.h b/drivers/scsi/isci/task.h
index bc78c0a..1b27b37 100644
--- a/drivers/scsi/isci/task.h
+++ b/drivers/scsi/isci/task.h
@@ -106,7 +106,6 @@
 	} resp;
 	unsigned char lun[8];
 	u16 io_tag;
-	struct isci_remote_device *device;
 	enum isci_tmf_function_codes tmf_code;
 	int status;
 
@@ -120,10 +119,10 @@
 
 };
 
-static inline void isci_print_tmf(struct isci_tmf *tmf)
+static inline void isci_print_tmf(struct isci_host *ihost, struct isci_tmf *tmf)
 {
 	if (SAS_PROTOCOL_SATA == tmf->proto)
-		dev_dbg(&tmf->device->isci_port->isci_host->pdev->dev,
+		dev_dbg(&ihost->pdev->dev,
 			"%s: status = %x\n"
 			"tmf->resp.d2h_fis.status = %x\n"
 			"tmf->resp.d2h_fis.error = %x\n",
@@ -132,7 +131,7 @@
 			tmf->resp.d2h_fis.status,
 			tmf->resp.d2h_fis.error);
 	else
-		dev_dbg(&tmf->device->isci_port->isci_host->pdev->dev,
+		dev_dbg(&ihost->pdev->dev,
 			"%s: status = %x\n"
 			"tmf->resp.resp_iu.data_present = %x\n"
 			"tmf->resp.resp_iu.status = %x\n"
diff --git a/drivers/scsi/libfc/fc_disc.c b/drivers/scsi/libfc/fc_disc.c
index 7269e92..1d1b0c9 100644
--- a/drivers/scsi/libfc/fc_disc.c
+++ b/drivers/scsi/libfc/fc_disc.c
@@ -61,7 +61,7 @@
  * Locking Note: This function expects that the lport mutex is locked before
  * calling it.
  */
-void fc_disc_stop_rports(struct fc_disc *disc)
+static void fc_disc_stop_rports(struct fc_disc *disc)
 {
 	struct fc_lport *lport;
 	struct fc_rport_priv *rdata;
@@ -682,7 +682,7 @@
  * fc_disc_stop() - Stop discovery for a given lport
  * @lport: The local port that discovery should stop on
  */
-void fc_disc_stop(struct fc_lport *lport)
+static void fc_disc_stop(struct fc_lport *lport)
 {
 	struct fc_disc *disc = &lport->disc;
 
@@ -698,7 +698,7 @@
  * This function will block until discovery has been
  * completely stopped and all rports have been deleted.
  */
-void fc_disc_stop_final(struct fc_lport *lport)
+static void fc_disc_stop_final(struct fc_lport *lport)
 {
 	fc_disc_stop(lport);
 	lport->tt.rport_flush_queue();
diff --git a/drivers/scsi/libfc/fc_elsct.c b/drivers/scsi/libfc/fc_elsct.c
index fb9161d..e17a28d 100644
--- a/drivers/scsi/libfc/fc_elsct.c
+++ b/drivers/scsi/libfc/fc_elsct.c
@@ -28,6 +28,7 @@
 #include <scsi/fc/fc_els.h>
 #include <scsi/libfc.h>
 #include <scsi/fc_encode.h>
+#include "fc_libfc.h"
 
 /**
  * fc_elsct_send() - Send an ELS or CT frame
diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c
index 9de9db2..4d70d96 100644
--- a/drivers/scsi/libfc/fc_exch.c
+++ b/drivers/scsi/libfc/fc_exch.c
@@ -91,7 +91,7 @@
  * It manages the allocation of exchange IDs.
  */
 struct fc_exch_mgr {
-	struct fc_exch_pool *pool;
+	struct fc_exch_pool __percpu *pool;
 	mempool_t	*ep_pool;
 	enum fc_class	class;
 	struct kref	kref;
diff --git a/drivers/scsi/libfc/fc_fcp.c b/drivers/scsi/libfc/fc_fcp.c
index 221875e..f607314 100644
--- a/drivers/scsi/libfc/fc_fcp.c
+++ b/drivers/scsi/libfc/fc_fcp.c
@@ -155,6 +155,7 @@
 		fsp->xfer_ddp = FC_XID_UNKNOWN;
 		atomic_set(&fsp->ref_cnt, 1);
 		init_timer(&fsp->timer);
+		fsp->timer.data = (unsigned long)fsp;
 		INIT_LIST_HEAD(&fsp->list);
 		spin_lock_init(&fsp->scsi_pkt_lock);
 	}
@@ -1850,9 +1851,6 @@
 	}
 	put_cpu();
 
-	init_timer(&fsp->timer);
-	fsp->timer.data = (unsigned long)fsp;
-
 	/*
 	 * send it to the lower layer
 	 * if we get -1 return then put the request in the pending
diff --git a/drivers/scsi/libfc/fc_lport.c b/drivers/scsi/libfc/fc_lport.c
index e77094a..83750eb 100644
--- a/drivers/scsi/libfc/fc_lport.c
+++ b/drivers/scsi/libfc/fc_lport.c
@@ -677,7 +677,8 @@
  * @lport: The local port receiving the event
  * @event: The discovery event
  */
-void fc_lport_disc_callback(struct fc_lport *lport, enum fc_disc_event event)
+static void fc_lport_disc_callback(struct fc_lport *lport,
+				   enum fc_disc_event event)
 {
 	switch (event) {
 	case DISC_EV_SUCCESS:
@@ -1568,7 +1569,7 @@
  * Locking Note: The lport lock is expected to be held before calling
  * this routine.
  */
-void fc_lport_enter_flogi(struct fc_lport *lport)
+static void fc_lport_enter_flogi(struct fc_lport *lport)
 {
 	struct fc_frame *fp;
 
diff --git a/drivers/scsi/libfc/fc_rport.c b/drivers/scsi/libfc/fc_rport.c
index b9e4348..83aa1ef 100644
--- a/drivers/scsi/libfc/fc_rport.c
+++ b/drivers/scsi/libfc/fc_rport.c
@@ -391,7 +391,7 @@
  * If it appears we are already logged in, ADISC is used to verify
  * the setup.
  */
-int fc_rport_login(struct fc_rport_priv *rdata)
+static int fc_rport_login(struct fc_rport_priv *rdata)
 {
 	mutex_lock(&rdata->rp_mutex);
 
@@ -451,7 +451,7 @@
  * function will hold the rport lock, call an _enter_*
  * function and then unlock the rport.
  */
-int fc_rport_logoff(struct fc_rport_priv *rdata)
+static int fc_rport_logoff(struct fc_rport_priv *rdata)
 {
 	mutex_lock(&rdata->rp_mutex);
 
@@ -653,8 +653,8 @@
  * @fp:	    The FLOGI response frame
  * @rp_arg: The remote port that received the FLOGI response
  */
-void fc_rport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp,
-			 void *rp_arg)
+static void fc_rport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp,
+				void *rp_arg)
 {
 	struct fc_rport_priv *rdata = rp_arg;
 	struct fc_lport *lport = rdata->local_port;
@@ -1520,7 +1520,7 @@
  *
  * Locking Note: Called with the lport lock held.
  */
-void fc_rport_recv_req(struct fc_lport *lport, struct fc_frame *fp)
+static void fc_rport_recv_req(struct fc_lport *lport, struct fc_frame *fp)
 {
 	struct fc_seq_els_data els_data;
 
diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c
index 5c17764..15eefa1 100644
--- a/drivers/scsi/megaraid.c
+++ b/drivers/scsi/megaraid.c
@@ -306,19 +306,22 @@
 	adapter->host->sg_tablesize = adapter->sglen;
 
 
-	/* use HP firmware and bios version encoding */
+	/* use HP firmware and bios version encoding
+	   Note: fw_version[0|1] and bios_version[0|1] were originally shifted
+	   right 8 bits making them zero. This 0 value was hardcoded to fix
+	   sparse warnings. */
 	if (adapter->product_info.subsysvid == HP_SUBSYS_VID) {
 		sprintf (adapter->fw_version, "%c%d%d.%d%d",
 			 adapter->product_info.fw_version[2],
-			 adapter->product_info.fw_version[1] >> 8,
+			 0,
 			 adapter->product_info.fw_version[1] & 0x0f,
-			 adapter->product_info.fw_version[0] >> 8,
+			 0,
 			 adapter->product_info.fw_version[0] & 0x0f);
 		sprintf (adapter->bios_version, "%c%d%d.%d%d",
 			 adapter->product_info.bios_version[2],
-			 adapter->product_info.bios_version[1] >> 8,
+			 0,
 			 adapter->product_info.bios_version[1] & 0x0f,
-			 adapter->product_info.bios_version[0] >> 8,
+			 0,
 			 adapter->product_info.bios_version[0] & 0x0f);
 	} else {
 		memcpy(adapter->fw_version,
diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index dd94c7d..e5f416f 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -33,9 +33,9 @@
 /*
  * MegaRAID SAS Driver meta data
  */
-#define MEGASAS_VERSION				"00.00.06.12-rc1"
-#define MEGASAS_RELDATE				"Oct. 5, 2011"
-#define MEGASAS_EXT_VERSION			"Wed. Oct. 5 17:00:00 PDT 2011"
+#define MEGASAS_VERSION				"00.00.06.14-rc1"
+#define MEGASAS_RELDATE				"Jan. 6, 2012"
+#define MEGASAS_EXT_VERSION			"Fri. Jan. 6 17:00:00 PDT 2012"
 
 /*
  * Device IDs
@@ -773,7 +773,6 @@
 
 #define MFI_OB_INTR_STATUS_MASK			0x00000002
 #define MFI_POLL_TIMEOUT_SECS			60
-#define MEGASAS_COMPLETION_TIMER_INTERVAL      (HZ/10)
 
 #define MFI_REPLY_1078_MESSAGE_INTERRUPT	0x80000000
 #define MFI_REPLY_GEN2_MESSAGE_INTERRUPT	0x00000001
@@ -1353,7 +1352,6 @@
 	u32 mfiStatus;
 	u32 last_seq_num;
 
-	struct timer_list io_completion_timer;
 	struct list_head internal_reset_pending_q;
 
 	/* Ptr to hba specific information */
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index 29a994f..8b300be 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -18,7 +18,7 @@
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  *
  *  FILE: megaraid_sas_base.c
- *  Version : v00.00.06.12-rc1
+ *  Version : v00.00.06.14-rc1
  *
  *  Authors: LSI Corporation
  *           Sreenivas Bagalkote
@@ -59,14 +59,6 @@
 #include "megaraid_sas.h"
 
 /*
- * poll_mode_io:1- schedule complete completion from q cmd
- */
-static unsigned int poll_mode_io;
-module_param_named(poll_mode_io, poll_mode_io, int, 0);
-MODULE_PARM_DESC(poll_mode_io,
-	"Complete cmds from IO path, (default=0)");
-
-/*
  * Number of sectors per IO command
  * Will be set in megasas_init_mfi if user does not provide
  */
@@ -1439,11 +1431,6 @@
 
 	instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
 				cmd->frame_count-1, instance->reg_set);
-	/*
-	 * Check if we have pend cmds to be completed
-	 */
-	if (poll_mode_io && atomic_read(&instance->fw_outstanding))
-		tasklet_schedule(&instance->isr_tasklet);
 
 	return 0;
 out_return_cmd:
@@ -3370,47 +3357,6 @@
 	return -EINVAL;
 }
 
-/**
- * megasas_start_timer - Initializes a timer object
- * @instance:		Adapter soft state
- * @timer:		timer object to be initialized
- * @fn:			timer function
- * @interval:		time interval between timer function call
- */
-static inline void
-megasas_start_timer(struct megasas_instance *instance,
-			struct timer_list *timer,
-			void *fn, unsigned long interval)
-{
-	init_timer(timer);
-	timer->expires = jiffies + interval;
-	timer->data = (unsigned long)instance;
-	timer->function = fn;
-	add_timer(timer);
-}
-
-/**
- * megasas_io_completion_timer - Timer fn
- * @instance_addr:	Address of adapter soft state
- *
- * Schedules tasklet for cmd completion
- * if poll_mode_io is set
- */
-static void
-megasas_io_completion_timer(unsigned long instance_addr)
-{
-	struct megasas_instance *instance =
-			(struct megasas_instance *)instance_addr;
-
-	if (atomic_read(&instance->fw_outstanding))
-		tasklet_schedule(&instance->isr_tasklet);
-
-	/* Restart timer */
-	if (poll_mode_io)
-		mod_timer(&instance->io_completion_timer,
-			jiffies + MEGASAS_COMPLETION_TIMER_INTERVAL);
-}
-
 static u32
 megasas_init_adapter_mfi(struct megasas_instance *instance)
 {
@@ -3638,11 +3584,6 @@
 	tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
 		(unsigned long)instance);
 
-	/* Initialize the cmd completion timer */
-	if (poll_mode_io)
-		megasas_start_timer(instance, &instance->io_completion_timer,
-				megasas_io_completion_timer,
-				MEGASAS_COMPLETION_TIMER_INTERVAL);
 	return 0;
 
 fail_init_adapter:
@@ -4369,9 +4310,6 @@
 	host = instance->host;
 	instance->unload = 1;
 
-	if (poll_mode_io)
-		del_timer_sync(&instance->io_completion_timer);
-
 	megasas_flush_cache(instance);
 	megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
 
@@ -4511,12 +4449,6 @@
 	}
 
 	instance->instancet->enable_intr(instance->reg_set);
-
-	/* Initialize the cmd completion timer */
-	if (poll_mode_io)
-		megasas_start_timer(instance, &instance->io_completion_timer,
-				megasas_io_completion_timer,
-				MEGASAS_COMPLETION_TIMER_INTERVAL);
 	instance->unload = 0;
 
 	/*
@@ -4570,9 +4502,6 @@
 	host = instance->host;
 	fusion = instance->ctrl_context;
 
-	if (poll_mode_io)
-		del_timer_sync(&instance->io_completion_timer);
-
 	scsi_remove_host(instance->host);
 	megasas_flush_cache(instance);
 	megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
@@ -4773,6 +4702,8 @@
 	memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
 	cmd->frame->hdr.context = cmd->index;
 	cmd->frame->hdr.pad_0 = 0;
+	cmd->frame->hdr.flags &= ~(MFI_FRAME_IEEE | MFI_FRAME_SGL64 |
+				   MFI_FRAME_SENSE64);
 
 	/*
 	 * The management interface between applications and the fw uses
@@ -5219,60 +5150,6 @@
 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
 		megasas_sysfs_set_dbg_lvl);
 
-static ssize_t
-megasas_sysfs_show_poll_mode_io(struct device_driver *dd, char *buf)
-{
-	return sprintf(buf, "%u\n", poll_mode_io);
-}
-
-static ssize_t
-megasas_sysfs_set_poll_mode_io(struct device_driver *dd,
-				const char *buf, size_t count)
-{
-	int retval = count;
-	int tmp = poll_mode_io;
-	int i;
-	struct megasas_instance *instance;
-
-	if (sscanf(buf, "%u", &poll_mode_io) < 1) {
-		printk(KERN_ERR "megasas: could not set poll_mode_io\n");
-		retval = -EINVAL;
-	}
-
-	/*
-	 * Check if poll_mode_io is already set or is same as previous value
-	 */
-	if ((tmp && poll_mode_io) || (tmp == poll_mode_io))
-		goto out;
-
-	if (poll_mode_io) {
-		/*
-		 * Start timers for all adapters
-		 */
-		for (i = 0; i < megasas_mgmt_info.max_index; i++) {
-			instance = megasas_mgmt_info.instance[i];
-			if (instance) {
-				megasas_start_timer(instance,
-					&instance->io_completion_timer,
-					megasas_io_completion_timer,
-					MEGASAS_COMPLETION_TIMER_INTERVAL);
-			}
-		}
-	} else {
-		/*
-		 * Delete timers for all adapters
-		 */
-		for (i = 0; i < megasas_mgmt_info.max_index; i++) {
-			instance = megasas_mgmt_info.instance[i];
-			if (instance)
-				del_timer_sync(&instance->io_completion_timer);
-		}
-	}
-
-out:
-	return retval;
-}
-
 static void
 megasas_aen_polling(struct work_struct *work)
 {
@@ -5502,11 +5379,6 @@
 	kfree(ev);
 }
 
-
-static DRIVER_ATTR(poll_mode_io, S_IRUGO|S_IWUSR,
-		megasas_sysfs_show_poll_mode_io,
-		megasas_sysfs_set_poll_mode_io);
-
 /**
  * megasas_init - Driver load entry point
  */
@@ -5566,11 +5438,6 @@
 	if (rval)
 		goto err_dcf_dbg_lvl;
 	rval = driver_create_file(&megasas_pci_driver.driver,
-				  &driver_attr_poll_mode_io);
-	if (rval)
-		goto err_dcf_poll_mode_io;
-
-	rval = driver_create_file(&megasas_pci_driver.driver,
 				&driver_attr_support_device_change);
 	if (rval)
 		goto err_dcf_support_device_change;
@@ -5579,10 +5446,6 @@
 
 err_dcf_support_device_change:
 	driver_remove_file(&megasas_pci_driver.driver,
-		  &driver_attr_poll_mode_io);
-
-err_dcf_poll_mode_io:
-	driver_remove_file(&megasas_pci_driver.driver,
 			   &driver_attr_dbg_lvl);
 err_dcf_dbg_lvl:
 	driver_remove_file(&megasas_pci_driver.driver,
@@ -5607,8 +5470,6 @@
 static void __exit megasas_exit(void)
 {
 	driver_remove_file(&megasas_pci_driver.driver,
-			   &driver_attr_poll_mode_io);
-	driver_remove_file(&megasas_pci_driver.driver,
 			   &driver_attr_dbg_lvl);
 	driver_remove_file(&megasas_pci_driver.driver,
 			&driver_attr_support_poll_for_event);
diff --git a/drivers/scsi/megaraid/megaraid_sas_fp.c b/drivers/scsi/megaraid/megaraid_sas_fp.c
index 5255dd6..294abb0 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fp.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fp.c
@@ -282,7 +282,9 @@
 	else {
 		*pDevHandle = MR_PD_INVALID; /* set dev handle as invalid. */
 		if ((raid->level >= 5) &&
-		    (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER))
+		    ((instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) ||
+		     (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER &&
+		      raid->regTypeReqOnRead != REGION_TYPE_UNUSED)))
 			pRAID_Context->regLockFlags = REGION_TYPE_EXCLUSIVE;
 		else if (raid->level == 1) {
 			/* Get alternate Pd. */
diff --git a/drivers/scsi/qla4xxx/ql4_def.h b/drivers/scsi/qla4xxx/ql4_def.h
index 22a3ff0..bfe6854 100644
--- a/drivers/scsi/qla4xxx/ql4_def.h
+++ b/drivers/scsi/qla4xxx/ql4_def.h
@@ -150,6 +150,8 @@
 #define QL4_SESS_RECOVERY_TMO		120	/* iSCSI session */
 						/* recovery timeout */
 
+#define MSB(x) ((uint8_t)((uint16_t)(x) >> 8))
+#define LSW(x) ((uint16_t)(x))
 #define LSDW(x) ((u32)((u64)(x)))
 #define MSDW(x) ((u32)((((u64)(x)) >> 16) >> 16))
 
@@ -671,6 +673,7 @@
 	uint16_t pri_ddb_idx;
 	uint16_t sec_ddb_idx;
 	int is_reset;
+	uint16_t temperature;
 };
 
 struct ql4_task_data {
diff --git a/drivers/scsi/qla4xxx/ql4_init.c b/drivers/scsi/qla4xxx/ql4_init.c
index 1bdfa81..90614f3 100644
--- a/drivers/scsi/qla4xxx/ql4_init.c
+++ b/drivers/scsi/qla4xxx/ql4_init.c
@@ -697,6 +697,9 @@
 			writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
 			       &ha->reg->ctrl_status);
 			readl(&ha->reg->ctrl_status);
+			writel(set_rmask(CSR_SCSI_COMPLETION_INTR),
+			       &ha->reg->ctrl_status);
+			readl(&ha->reg->ctrl_status);
 			spin_unlock_irqrestore(&ha->hardware_lock, flags);
 			if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
 				DEBUG2(printk("scsi%ld: %s: Get firmware "
diff --git a/drivers/scsi/qla4xxx/ql4_mbx.c b/drivers/scsi/qla4xxx/ql4_mbx.c
index c259378..e1e66a4 100644
--- a/drivers/scsi/qla4xxx/ql4_mbx.c
+++ b/drivers/scsi/qla4xxx/ql4_mbx.c
@@ -219,6 +219,13 @@
 		ha->mailbox_timeout_count++;
 		mbx_sts[0] = (-1);
 		set_bit(DPC_RESET_HA, &ha->dpc_flags);
+		if (is_qla8022(ha)) {
+			ql4_printk(KERN_INFO, ha,
+				   "disabling pause transmit on port 0 & 1.\n");
+			qla4_8xxx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
+					CRB_NIU_XG_PAUSE_CTL_P0 |
+					CRB_NIU_XG_PAUSE_CTL_P1);
+		}
 		goto mbox_exit;
 	}
 
diff --git a/drivers/scsi/qla4xxx/ql4_nx.c b/drivers/scsi/qla4xxx/ql4_nx.c
index 8d6bc1b..78f1111 100644
--- a/drivers/scsi/qla4xxx/ql4_nx.c
+++ b/drivers/scsi/qla4xxx/ql4_nx.c
@@ -1875,6 +1875,11 @@
 int qla4_8xxx_load_risc(struct scsi_qla_host *ha)
 {
 	int retval;
+
+	/* clear the interrupt */
+	writel(0, &ha->qla4_8xxx_reg->host_int);
+	readl(&ha->qla4_8xxx_reg->host_int);
+
 	retval = qla4_8xxx_device_state_handler(ha);
 
 	if (retval == QLA_SUCCESS && !test_bit(AF_INIT_DONE, &ha->flags))
diff --git a/drivers/scsi/qla4xxx/ql4_nx.h b/drivers/scsi/qla4xxx/ql4_nx.h
index 35376a1..dc45ac9 100644
--- a/drivers/scsi/qla4xxx/ql4_nx.h
+++ b/drivers/scsi/qla4xxx/ql4_nx.h
@@ -19,12 +19,28 @@
 #define PHAN_PEG_RCV_INITIALIZED	0xff01
 
 /*CRB_RELATED*/
-#define QLA82XX_CRB_BASE	QLA82XX_CAM_RAM(0x200)
-#define QLA82XX_REG(X)		(QLA82XX_CRB_BASE+(X))
-
+#define QLA82XX_CRB_BASE		(QLA82XX_CAM_RAM(0x200))
+#define QLA82XX_REG(X)			(QLA82XX_CRB_BASE+(X))
 #define CRB_CMDPEG_STATE		QLA82XX_REG(0x50)
 #define CRB_RCVPEG_STATE		QLA82XX_REG(0x13c)
 #define CRB_DMA_SHIFT			QLA82XX_REG(0xcc)
+#define CRB_TEMP_STATE			QLA82XX_REG(0x1b4)
+
+#define qla82xx_get_temp_val(x)		((x) >> 16)
+#define qla82xx_get_temp_state(x)	((x) & 0xffff)
+#define qla82xx_encode_temp(val, state)	(((val) << 16) | (state))
+
+/*
+ * Temperature control.
+ */
+enum {
+	QLA82XX_TEMP_NORMAL = 0x1,	/* Normal operating range */
+	QLA82XX_TEMP_WARN,	/* Sound alert, temperature getting high */
+	QLA82XX_TEMP_PANIC	/* Fatal error, hardware has shut down. */
+};
+
+#define CRB_NIU_XG_PAUSE_CTL_P0		0x1
+#define CRB_NIU_XG_PAUSE_CTL_P1		0x8
 
 #define QLA82XX_HW_H0_CH_HUB_ADR	0x05
 #define QLA82XX_HW_H1_CH_HUB_ADR	0x0E
diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index ec393a0..ce6d3b7 100644
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -35,43 +35,44 @@
 int ql4xdisablesysfsboot = 1;
 module_param(ql4xdisablesysfsboot, int, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(ql4xdisablesysfsboot,
-		"Set to disable exporting boot targets to sysfs\n"
-		" 0 - Export boot targets\n"
-		" 1 - Do not export boot targets (Default)");
+		 " Set to disable exporting boot targets to sysfs.\n"
+		 "\t\t  0 - Export boot targets\n"
+		 "\t\t  1 - Do not export boot targets (Default)");
 
 int ql4xdontresethba = 0;
 module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(ql4xdontresethba,
-		"Don't reset the HBA for driver recovery \n"
-		" 0 - It will reset HBA (Default)\n"
-		" 1 - It will NOT reset HBA");
+		 " Don't reset the HBA for driver recovery.\n"
+		 "\t\t  0 - It will reset HBA (Default)\n"
+		 "\t\t  1 - It will NOT reset HBA");
 
-int ql4xextended_error_logging = 0; /* 0 = off, 1 = log errors */
+int ql4xextended_error_logging;
 module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(ql4xextended_error_logging,
-		 "Option to enable extended error logging, "
-		 "Default is 0 - no logging, 1 - debug logging");
+		 " Option to enable extended error logging.\n"
+		 "\t\t  0 - no logging (Default)\n"
+		 "\t\t  2 - debug logging");
 
 int ql4xenablemsix = 1;
 module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
 MODULE_PARM_DESC(ql4xenablemsix,
-		"Set to enable MSI or MSI-X interrupt mechanism.\n"
-		" 0 = enable INTx interrupt mechanism.\n"
-		" 1 = enable MSI-X interrupt mechanism (Default).\n"
-		" 2 = enable MSI interrupt mechanism.");
+		 " Set to enable MSI or MSI-X interrupt mechanism.\n"
+		 "\t\t  0 = enable INTx interrupt mechanism.\n"
+		 "\t\t  1 = enable MSI-X interrupt mechanism (Default).\n"
+		 "\t\t  2 = enable MSI interrupt mechanism.");
 
 #define QL4_DEF_QDEPTH 32
 static int ql4xmaxqdepth = QL4_DEF_QDEPTH;
 module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(ql4xmaxqdepth,
-		"Maximum queue depth to report for target devices.\n"
-		" Default: 32.");
+		 " Maximum queue depth to report for target devices.\n"
+		 "\t\t  Default: 32.");
 
 static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO;
 module_param(ql4xsess_recovery_tmo, int, S_IRUGO);
 MODULE_PARM_DESC(ql4xsess_recovery_tmo,
 		"Target Session Recovery Timeout.\n"
-		" Default: 120 sec.");
+		"\t\t  Default: 120 sec.");
 
 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha);
 /*
@@ -1630,7 +1631,9 @@
 
 	/* Update timers after login */
 	ddb_entry->default_relogin_timeout =
-				le16_to_cpu(fw_ddb_entry->def_timeout);
+		(le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
+		 (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
+		 le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
 	ddb_entry->default_time2wait =
 				le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
 
@@ -1970,6 +1973,42 @@
 }
 
 /**
+ * qla4_8xxx_check_temp - Check the ISP82XX temperature.
+ * @ha: adapter block pointer.
+ *
+ * Note: The caller should not hold the idc lock.
+ **/
+static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
+{
+	uint32_t temp, temp_state, temp_val;
+	int status = QLA_SUCCESS;
+
+	temp = qla4_8xxx_rd_32(ha, CRB_TEMP_STATE);
+
+	temp_state = qla82xx_get_temp_state(temp);
+	temp_val = qla82xx_get_temp_val(temp);
+
+	if (temp_state == QLA82XX_TEMP_PANIC) {
+		ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
+			   " exceeds maximum allowed. Hardware has been shut"
+			   " down.\n", temp_val);
+		status = QLA_ERROR;
+	} else if (temp_state == QLA82XX_TEMP_WARN) {
+		if (ha->temperature == QLA82XX_TEMP_NORMAL)
+			ql4_printk(KERN_WARNING, ha, "Device temperature %d"
+				   " degrees C exceeds operating range."
+				   " Immediate action needed.\n", temp_val);
+	} else {
+		if (ha->temperature == QLA82XX_TEMP_WARN)
+			ql4_printk(KERN_INFO, ha, "Device temperature is"
+				   " now %d degrees C in normal range.\n",
+				   temp_val);
+	}
+	ha->temperature = temp_state;
+	return status;
+}
+
+/**
  * qla4_8xxx_check_fw_alive  - Check firmware health
  * @ha: Pointer to host adapter structure.
  *
@@ -2040,7 +2079,16 @@
 	    test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
 	    test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
 		dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
-		if (dev_state == QLA82XX_DEV_NEED_RESET &&
+
+		if (qla4_8xxx_check_temp(ha)) {
+			ql4_printk(KERN_INFO, ha, "disabling pause"
+				   " transmit on port 0 & 1.\n");
+			qla4_8xxx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
+					CRB_NIU_XG_PAUSE_CTL_P0 |
+					CRB_NIU_XG_PAUSE_CTL_P1);
+			set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
+			qla4xxx_wake_dpc(ha);
+		} else if (dev_state == QLA82XX_DEV_NEED_RESET &&
 		    !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
 			if (!ql4xdontresethba) {
 				ql4_printk(KERN_INFO, ha, "%s: HW State: "
@@ -2057,9 +2105,21 @@
 		} else  {
 			/* Check firmware health */
 			if (qla4_8xxx_check_fw_alive(ha)) {
+				ql4_printk(KERN_INFO, ha, "disabling pause"
+					   " transmit on port 0 & 1.\n");
+				qla4_8xxx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
+						CRB_NIU_XG_PAUSE_CTL_P0 |
+						CRB_NIU_XG_PAUSE_CTL_P1);
 				halt_status = qla4_8xxx_rd_32(ha,
 						QLA82XX_PEG_HALT_STATUS1);
 
+				if (LSW(MSB(halt_status)) == 0x67)
+					ql4_printk(KERN_ERR, ha, "%s:"
+						   " Firmware aborted with"
+						   " error code 0x00006700."
+						   " Device is being reset\n",
+						   __func__);
+
 				/* Since we cannot change dev_state in interrupt
 				 * context, set appropriate DPC flag then wakeup
 				 * DPC */
@@ -2078,7 +2138,7 @@
 	}
 }
 
-void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
+static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
 {
 	struct iscsi_session *sess;
 	struct ddb_entry *ddb_entry;
@@ -3826,16 +3886,14 @@
 	return ret;
 }
 
-static void qla4xxx_free_nt_list(struct list_head *list_nt)
+static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
 {
-	struct qla_ddb_index  *nt_ddb_idx, *nt_ddb_idx_tmp;
+	struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
 
-	/* Free up the normaltargets list */
-	list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
-		list_del_init(&nt_ddb_idx->list);
-		vfree(nt_ddb_idx);
+	list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
+		list_del_init(&ddb_idx->list);
+		vfree(ddb_idx);
 	}
-
 }
 
 static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
@@ -3884,6 +3942,8 @@
 static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
 					  struct ddb_entry *ddb_entry)
 {
+	uint16_t def_timeout;
+
 	ddb_entry->ddb_type = FLASH_DDB;
 	ddb_entry->fw_ddb_index = INVALID_ENTRY;
 	ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
@@ -3894,9 +3954,10 @@
 	atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
 	atomic_set(&ddb_entry->relogin_timer, 0);
 	atomic_set(&ddb_entry->relogin_retry_count, 0);
-
+	def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
 	ddb_entry->default_relogin_timeout =
-		le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
+		(def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
+		def_timeout : LOGIN_TOV;
 	ddb_entry->default_time2wait =
 		le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
 }
@@ -3934,7 +3995,6 @@
 			    ip_state == IP_ADDRSTATE_DEPRICATED ||
 			    ip_state == IP_ADDRSTATE_DISABLING)
 				ip_idx[idx] = -1;
-
 		}
 
 		/* Break if all IP states checked */
@@ -3947,58 +4007,37 @@
 	} while (time_after(wtime, jiffies));
 }
 
-void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
+static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
+				  struct list_head *list_st)
 {
+	struct qla_ddb_index  *st_ddb_idx;
 	int max_ddbs;
+	int fw_idx_size;
+	struct dev_db_entry *fw_ddb_entry;
+	dma_addr_t fw_ddb_dma;
 	int ret;
 	uint32_t idx = 0, next_idx = 0;
 	uint32_t state = 0, conn_err = 0;
-	uint16_t conn_id;
-	struct dev_db_entry *fw_ddb_entry;
-	struct ddb_entry *ddb_entry = NULL;
-	dma_addr_t fw_ddb_dma;
-	struct iscsi_cls_session *cls_sess;
-	struct iscsi_session *sess;
-	struct iscsi_cls_conn *cls_conn;
-	struct iscsi_endpoint *ep;
-	uint16_t cmds_max = 32, tmo = 0;
-	uint32_t initial_cmdsn = 0;
-	struct list_head list_st, list_nt; /* List of sendtargets */
-	struct qla_ddb_index  *st_ddb_idx, *st_ddb_idx_tmp;
-	int fw_idx_size;
-	unsigned long wtime;
-	struct qla_ddb_index  *nt_ddb_idx;
-
-	if (!test_bit(AF_LINK_UP, &ha->flags)) {
-		set_bit(AF_BUILD_DDB_LIST, &ha->flags);
-		ha->is_reset = is_reset;
-		return;
-	}
-	max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
-				     MAX_DEV_DB_ENTRIES;
+	uint16_t conn_id = 0;
 
 	fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
 				      &fw_ddb_dma);
 	if (fw_ddb_entry == NULL) {
 		DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
-		goto exit_ddb_list;
+		goto exit_st_list;
 	}
 
-	INIT_LIST_HEAD(&list_st);
-	INIT_LIST_HEAD(&list_nt);
+	max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
+				     MAX_DEV_DB_ENTRIES;
 	fw_idx_size = sizeof(struct qla_ddb_index);
 
 	for (idx = 0; idx < max_ddbs; idx = next_idx) {
-		ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry,
-					      fw_ddb_dma, NULL,
-					      &next_idx, &state, &conn_err,
-					      NULL, &conn_id);
+		ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
+					      NULL, &next_idx, &state,
+					      &conn_err, NULL, &conn_id);
 		if (ret == QLA_ERROR)
 			break;
 
-		if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
-			goto continue_next_st;
-
 		/* Check if ST, add to the list_st */
 		if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
 			goto continue_next_st;
@@ -4009,12 +4048,235 @@
 
 		st_ddb_idx->fw_ddb_idx = idx;
 
-		list_add_tail(&st_ddb_idx->list, &list_st);
+		list_add_tail(&st_ddb_idx->list, list_st);
 continue_next_st:
 		if (next_idx == 0)
 			break;
 	}
 
+exit_st_list:
+	if (fw_ddb_entry)
+		dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
+}
+
+/**
+ * qla4xxx_remove_failed_ddb - Remove inactive or failed ddb from list
+ * @ha: pointer to adapter structure
+ * @list_ddb: List from which failed ddb to be removed
+ *
+ * Iterate over the list of DDBs and find and remove DDBs that are either in
+ * no connection active state or failed state
+ **/
+static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
+				      struct list_head *list_ddb)
+{
+	struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
+	uint32_t next_idx = 0;
+	uint32_t state = 0, conn_err = 0;
+	int ret;
+
+	list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
+		ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
+					      NULL, 0, NULL, &next_idx, &state,
+					      &conn_err, NULL, NULL);
+		if (ret == QLA_ERROR)
+			continue;
+
+		if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
+		    state == DDB_DS_SESSION_FAILED) {
+			list_del_init(&ddb_idx->list);
+			vfree(ddb_idx);
+		}
+	}
+}
+
+static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
+				   struct dev_db_entry *fw_ddb_entry,
+				   int is_reset)
+{
+	struct iscsi_cls_session *cls_sess;
+	struct iscsi_session *sess;
+	struct iscsi_cls_conn *cls_conn;
+	struct iscsi_endpoint *ep;
+	uint16_t cmds_max = 32;
+	uint16_t conn_id = 0;
+	uint32_t initial_cmdsn = 0;
+	int ret = QLA_SUCCESS;
+
+	struct ddb_entry *ddb_entry = NULL;
+
+	/* Create session object, with INVALID_ENTRY,
+	 * the targer_id would get set when we issue the login
+	 */
+	cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
+				       cmds_max, sizeof(struct ddb_entry),
+				       sizeof(struct ql4_task_data),
+				       initial_cmdsn, INVALID_ENTRY);
+	if (!cls_sess) {
+		ret = QLA_ERROR;
+		goto exit_setup;
+	}
+
+	/*
+	 * so calling module_put function to decrement the
+	 * reference count.
+	 **/
+	module_put(qla4xxx_iscsi_transport.owner);
+	sess = cls_sess->dd_data;
+	ddb_entry = sess->dd_data;
+	ddb_entry->sess = cls_sess;
+
+	cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
+	memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
+	       sizeof(struct dev_db_entry));
+
+	qla4xxx_setup_flash_ddb_entry(ha, ddb_entry);
+
+	cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);
+
+	if (!cls_conn) {
+		ret = QLA_ERROR;
+		goto exit_setup;
+	}
+
+	ddb_entry->conn = cls_conn;
+
+	/* Setup ep, for displaying attributes in sysfs */
+	ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
+	if (ep) {
+		ep->conn = cls_conn;
+		cls_conn->ep = ep;
+	} else {
+		DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
+		ret = QLA_ERROR;
+		goto exit_setup;
+	}
+
+	/* Update sess/conn params */
+	qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
+
+	if (is_reset == RESET_ADAPTER) {
+		iscsi_block_session(cls_sess);
+		/* Use the relogin path to discover new devices
+		 *  by short-circuting the logic of setting
+		 *  timer to relogin - instead set the flags
+		 *  to initiate login right away.
+		 */
+		set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
+		set_bit(DF_RELOGIN, &ddb_entry->flags);
+	}
+
+exit_setup:
+	return ret;
+}
+
+static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
+				  struct list_head *list_nt, int is_reset)
+{
+	struct dev_db_entry *fw_ddb_entry;
+	dma_addr_t fw_ddb_dma;
+	int max_ddbs;
+	int fw_idx_size;
+	int ret;
+	uint32_t idx = 0, next_idx = 0;
+	uint32_t state = 0, conn_err = 0;
+	uint16_t conn_id = 0;
+	struct qla_ddb_index  *nt_ddb_idx;
+
+	fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
+				      &fw_ddb_dma);
+	if (fw_ddb_entry == NULL) {
+		DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
+		goto exit_nt_list;
+	}
+	max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
+				     MAX_DEV_DB_ENTRIES;
+	fw_idx_size = sizeof(struct qla_ddb_index);
+
+	for (idx = 0; idx < max_ddbs; idx = next_idx) {
+		ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
+					      NULL, &next_idx, &state,
+					      &conn_err, NULL, &conn_id);
+		if (ret == QLA_ERROR)
+			break;
+
+		if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
+			goto continue_next_nt;
+
+		/* Check if NT, then add to list it */
+		if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
+			goto continue_next_nt;
+
+		if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
+		    state == DDB_DS_SESSION_FAILED))
+			goto continue_next_nt;
+
+		DEBUG2(ql4_printk(KERN_INFO, ha,
+				  "Adding  DDB to session = 0x%x\n", idx));
+		if (is_reset == INIT_ADAPTER) {
+			nt_ddb_idx = vmalloc(fw_idx_size);
+			if (!nt_ddb_idx)
+				break;
+
+			nt_ddb_idx->fw_ddb_idx = idx;
+
+			memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
+			       sizeof(struct dev_db_entry));
+
+			if (qla4xxx_is_flash_ddb_exists(ha, list_nt,
+					fw_ddb_entry) == QLA_SUCCESS) {
+				vfree(nt_ddb_idx);
+				goto continue_next_nt;
+			}
+			list_add_tail(&nt_ddb_idx->list, list_nt);
+		} else if (is_reset == RESET_ADAPTER) {
+			if (qla4xxx_is_session_exists(ha, fw_ddb_entry) ==
+								QLA_SUCCESS)
+				goto continue_next_nt;
+		}
+
+		ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset);
+		if (ret == QLA_ERROR)
+			goto exit_nt_list;
+
+continue_next_nt:
+		if (next_idx == 0)
+			break;
+	}
+
+exit_nt_list:
+	if (fw_ddb_entry)
+		dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
+}
+
+/**
+ * qla4xxx_build_ddb_list - Build ddb list and setup sessions
+ * @ha: pointer to adapter structure
+ * @is_reset: Is this init path or reset path
+ *
+ * Create a list of sendtargets (st) from firmware DDBs, issue send targets
+ * using connection open, then create the list of normal targets (nt)
+ * from firmware DDBs. Based on the list of nt setup session and connection
+ * objects.
+ **/
+void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
+{
+	uint16_t tmo = 0;
+	struct list_head list_st, list_nt;
+	struct qla_ddb_index  *st_ddb_idx, *st_ddb_idx_tmp;
+	unsigned long wtime;
+
+	if (!test_bit(AF_LINK_UP, &ha->flags)) {
+		set_bit(AF_BUILD_DDB_LIST, &ha->flags);
+		ha->is_reset = is_reset;
+		return;
+	}
+
+	INIT_LIST_HEAD(&list_st);
+	INIT_LIST_HEAD(&list_nt);
+
+	qla4xxx_build_st_list(ha, &list_st);
+
 	/* Before issuing conn open mbox, ensure all IPs states are configured
 	 * Note, conn open fails if IPs are not configured
 	 */
@@ -4026,153 +4288,32 @@
 	}
 
 	/* Wait to ensure all sendtargets are done for min 12 sec wait */
-	tmo = ((ha->def_timeout < LOGIN_TOV) ? LOGIN_TOV : ha->def_timeout);
+	tmo = ((ha->def_timeout > LOGIN_TOV) &&
+	       (ha->def_timeout < LOGIN_TOV * 10) ?
+	       ha->def_timeout : LOGIN_TOV);
+
 	DEBUG2(ql4_printk(KERN_INFO, ha,
 			  "Default time to wait for build ddb %d\n", tmo));
 
 	wtime = jiffies + (HZ * tmo);
 	do {
-		list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st,
-					 list) {
-			ret = qla4xxx_get_fwddb_entry(ha,
-						      st_ddb_idx->fw_ddb_idx,
-						      NULL, 0, NULL, &next_idx,
-						      &state, &conn_err, NULL,
-						      NULL);
-			if (ret == QLA_ERROR)
-				continue;
+		if (list_empty(&list_st))
+			break;
 
-			if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
-			    state == DDB_DS_SESSION_FAILED) {
-				list_del_init(&st_ddb_idx->list);
-				vfree(st_ddb_idx);
-			}
-		}
+		qla4xxx_remove_failed_ddb(ha, &list_st);
 		schedule_timeout_uninterruptible(HZ / 10);
 	} while (time_after(wtime, jiffies));
 
 	/* Free up the sendtargets list */
-	list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
-		list_del_init(&st_ddb_idx->list);
-		vfree(st_ddb_idx);
-	}
+	qla4xxx_free_ddb_list(&list_st);
 
-	for (idx = 0; idx < max_ddbs; idx = next_idx) {
-		ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry,
-					      fw_ddb_dma, NULL,
-					      &next_idx, &state, &conn_err,
-					      NULL, &conn_id);
-		if (ret == QLA_ERROR)
-			break;
+	qla4xxx_build_nt_list(ha, &list_nt, is_reset);
 
-		if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
-			goto continue_next_nt;
-
-		/* Check if NT, then add to list it */
-		if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
-			goto continue_next_nt;
-
-		if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
-		    state == DDB_DS_SESSION_FAILED) {
-			DEBUG2(ql4_printk(KERN_INFO, ha,
-					  "Adding  DDB to session = 0x%x\n",
-					  idx));
-			if (is_reset == INIT_ADAPTER) {
-				nt_ddb_idx = vmalloc(fw_idx_size);
-				if (!nt_ddb_idx)
-					break;
-
-				nt_ddb_idx->fw_ddb_idx = idx;
-
-				memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
-				       sizeof(struct dev_db_entry));
-
-				if (qla4xxx_is_flash_ddb_exists(ha, &list_nt,
-						fw_ddb_entry) == QLA_SUCCESS) {
-					vfree(nt_ddb_idx);
-					goto continue_next_nt;
-				}
-				list_add_tail(&nt_ddb_idx->list, &list_nt);
-			} else if (is_reset == RESET_ADAPTER) {
-				if (qla4xxx_is_session_exists(ha,
-						   fw_ddb_entry) == QLA_SUCCESS)
-					goto continue_next_nt;
-			}
-
-			/* Create session object, with INVALID_ENTRY,
-			 * the targer_id would get set when we issue the login
-			 */
-			cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport,
-						ha->host, cmds_max,
-						sizeof(struct ddb_entry),
-						sizeof(struct ql4_task_data),
-						initial_cmdsn, INVALID_ENTRY);
-			if (!cls_sess)
-				goto exit_ddb_list;
-
-			/*
-			 * iscsi_session_setup increments the driver reference
-			 * count which wouldn't let the driver to be unloaded.
-			 * so calling module_put function to decrement the
-			 * reference count.
-			 **/
-			module_put(qla4xxx_iscsi_transport.owner);
-			sess = cls_sess->dd_data;
-			ddb_entry = sess->dd_data;
-			ddb_entry->sess = cls_sess;
-
-			cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
-			memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
-			       sizeof(struct dev_db_entry));
-
-			qla4xxx_setup_flash_ddb_entry(ha, ddb_entry);
-
-			cls_conn = iscsi_conn_setup(cls_sess,
-						    sizeof(struct qla_conn),
-						    conn_id);
-			if (!cls_conn)
-				goto exit_ddb_list;
-
-			ddb_entry->conn = cls_conn;
-
-			/* Setup ep, for displaying attributes in sysfs */
-			ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
-			if (ep) {
-				ep->conn = cls_conn;
-				cls_conn->ep = ep;
-			} else {
-				DEBUG2(ql4_printk(KERN_ERR, ha,
-						  "Unable to get ep\n"));
-			}
-
-			/* Update sess/conn params */
-			qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess,
-						 cls_conn);
-
-			if (is_reset == RESET_ADAPTER) {
-				iscsi_block_session(cls_sess);
-				/* Use the relogin path to discover new devices
-				 *  by short-circuting the logic of setting
-				 *  timer to relogin - instead set the flags
-				 *  to initiate login right away.
-				 */
-				set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
-				set_bit(DF_RELOGIN, &ddb_entry->flags);
-			}
-		}
-continue_next_nt:
-		if (next_idx == 0)
-			break;
-	}
-exit_ddb_list:
-	qla4xxx_free_nt_list(&list_nt);
-	if (fw_ddb_entry)
-		dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
+	qla4xxx_free_ddb_list(&list_nt);
 
 	qla4xxx_free_ddb_index(ha);
 }
 
-
 /**
  * qla4xxx_probe_adapter - callback function to probe HBA
  * @pdev: pointer to pci_dev structure
diff --git a/drivers/scsi/qla4xxx/ql4_version.h b/drivers/scsi/qla4xxx/ql4_version.h
index 26a3fa3..133989b 100644
--- a/drivers/scsi/qla4xxx/ql4_version.h
+++ b/drivers/scsi/qla4xxx/ql4_version.h
@@ -5,4 +5,4 @@
  * See LICENSE.qla4xxx for copyright and licensing details.
  */
 
-#define QLA4XXX_DRIVER_VERSION	"5.02.00-k10"
+#define QLA4XXX_DRIVER_VERSION	"5.02.00-k12"
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index f85cfa6..b2c95db 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1316,15 +1316,10 @@
 	}
 
 	if (scsi_target_is_busy(starget)) {
-		if (list_empty(&sdev->starved_entry))
-			list_add_tail(&sdev->starved_entry,
-				      &shost->starved_list);
+		list_move_tail(&sdev->starved_entry, &shost->starved_list);
 		return 0;
 	}
 
-	/* We're OK to process the command, so we can't be starved */
-	if (!list_empty(&sdev->starved_entry))
-		list_del_init(&sdev->starved_entry);
 	return 1;
 }
 
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index 1b21491..f59d4a0 100644
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -3048,7 +3048,8 @@
 
 		spin_lock_irqsave(shost->host_lock, flags);
 		rport->flags &= ~(FC_RPORT_FAST_FAIL_TIMEDOUT |
-				  FC_RPORT_DEVLOSS_PENDING);
+				  FC_RPORT_DEVLOSS_PENDING |
+				  FC_RPORT_DEVLOSS_CALLBK_DONE);
 		spin_unlock_irqrestore(shost->host_lock, flags);
 
 		/* ensure any stgt delete functions are done */
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 02d9998..eacd46b 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -2368,16 +2368,15 @@
 sg_proc_write_adio(struct file *filp, const char __user *buffer,
 		   size_t count, loff_t *off)
 {
-	int num;
-	char buff[11];
+	int err;
+	unsigned long num;
 
 	if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
 		return -EACCES;
-	num = (count < 10) ? count : 10;
-	if (copy_from_user(buff, buffer, num))
-		return -EFAULT;
-	buff[num] = '\0';
-	sg_allow_dio = simple_strtoul(buff, NULL, 10) ? 1 : 0;
+	err = kstrtoul_from_user(buffer, count, 0, &num);
+	if (err)
+		return err;
+	sg_allow_dio = num ? 1 : 0;
 	return count;
 }
 
@@ -2390,17 +2389,15 @@
 sg_proc_write_dressz(struct file *filp, const char __user *buffer,
 		     size_t count, loff_t *off)
 {
-	int num;
+	int err;
 	unsigned long k = ULONG_MAX;
-	char buff[11];
 
 	if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
 		return -EACCES;
-	num = (count < 10) ? count : 10;
-	if (copy_from_user(buff, buffer, num))
-		return -EFAULT;
-	buff[num] = '\0';
-	k = simple_strtoul(buff, NULL, 10);
+
+	err = kstrtoul_from_user(buffer, count, 0, &k);
+	if (err)
+		return err;
 	if (k <= 1048576) {	/* limit "big buff" to 1 MB */
 		sg_big_buff = k;
 		return count;
diff --git a/drivers/scsi/sym53c8xx_2/sym_glue.c b/drivers/scsi/sym53c8xx_2/sym_glue.c
index b4543f5..36d1ed7 100644
--- a/drivers/scsi/sym53c8xx_2/sym_glue.c
+++ b/drivers/scsi/sym53c8xx_2/sym_glue.c
@@ -839,6 +839,10 @@
 	struct sym_lcb *lp = sym_lp(tp, sdev->lun);
 	unsigned long flags;
 
+	/* if slave_alloc returned before allocating a sym_lcb, return */
+	if (!lp)
+		return;
+
 	spin_lock_irqsave(np->s.host->host_lock, flags);
 
 	if (lp->busy_itlq || lp->busy_itl) {
diff --git a/drivers/spi/spi-dw-mid.c b/drivers/spi/spi-dw-mid.c
index e743a45..8418eb0 100644
--- a/drivers/spi/spi-dw-mid.c
+++ b/drivers/spi/spi-dw-mid.c
@@ -131,7 +131,7 @@
 	rxchan = dws->rxchan;
 
 	/* 2. Prepare the TX dma transfer */
-	txconf.direction = DMA_TO_DEVICE;
+	txconf.direction = DMA_MEM_TO_DEV;
 	txconf.dst_addr = dws->dma_addr;
 	txconf.dst_maxburst = LNW_DMA_MSIZE_16;
 	txconf.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
@@ -147,13 +147,13 @@
 	txdesc = txchan->device->device_prep_slave_sg(txchan,
 				&dws->tx_sgl,
 				1,
-				DMA_TO_DEVICE,
+				DMA_MEM_TO_DEV,
 				DMA_PREP_INTERRUPT | DMA_COMPL_SKIP_DEST_UNMAP);
 	txdesc->callback = dw_spi_dma_done;
 	txdesc->callback_param = dws;
 
 	/* 3. Prepare the RX dma transfer */
-	rxconf.direction = DMA_FROM_DEVICE;
+	rxconf.direction = DMA_DEV_TO_MEM;
 	rxconf.src_addr = dws->dma_addr;
 	rxconf.src_maxburst = LNW_DMA_MSIZE_16;
 	rxconf.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
@@ -169,7 +169,7 @@
 	rxdesc = rxchan->device->device_prep_slave_sg(rxchan,
 				&dws->rx_sgl,
 				1,
-				DMA_FROM_DEVICE,
+				DMA_DEV_TO_MEM,
 				DMA_PREP_INTERRUPT | DMA_COMPL_SKIP_DEST_UNMAP);
 	rxdesc->callback = dw_spi_dma_done;
 	rxdesc->callback_param = dws;
diff --git a/drivers/spi/spi-ep93xx.c b/drivers/spi/spi-ep93xx.c
index 0a282e5..d46e55c 100644
--- a/drivers/spi/spi-ep93xx.c
+++ b/drivers/spi/spi-ep93xx.c
@@ -551,6 +551,7 @@
 	struct dma_async_tx_descriptor *txd;
 	enum dma_slave_buswidth buswidth;
 	struct dma_slave_config conf;
+	enum dma_transfer_direction slave_dirn;
 	struct scatterlist *sg;
 	struct sg_table *sgt;
 	struct dma_chan *chan;
@@ -573,6 +574,7 @@
 
 		conf.src_addr = espi->sspdr_phys;
 		conf.src_addr_width = buswidth;
+		slave_dirn = DMA_DEV_TO_MEM;
 	} else {
 		chan = espi->dma_tx;
 		buf = t->tx_buf;
@@ -580,6 +582,7 @@
 
 		conf.dst_addr = espi->sspdr_phys;
 		conf.dst_addr_width = buswidth;
+		slave_dirn = DMA_MEM_TO_DEV;
 	}
 
 	ret = dmaengine_slave_config(chan, &conf);
@@ -631,7 +634,7 @@
 		return ERR_PTR(-ENOMEM);
 
 	txd = chan->device->device_prep_slave_sg(chan, sgt->sgl, nents,
-						 dir, DMA_CTRL_ACK);
+						 slave_dirn, DMA_CTRL_ACK);
 	if (!txd) {
 		dma_unmap_sg(chan->device->dev, sgt->sgl, sgt->nents, dir);
 		return ERR_PTR(-ENOMEM);
@@ -979,7 +982,7 @@
 	dma_cap_set(DMA_SLAVE, mask);
 
 	espi->dma_rx_data.port = EP93XX_DMA_SSP;
-	espi->dma_rx_data.direction = DMA_FROM_DEVICE;
+	espi->dma_rx_data.direction = DMA_DEV_TO_MEM;
 	espi->dma_rx_data.name = "ep93xx-spi-rx";
 
 	espi->dma_rx = dma_request_channel(mask, ep93xx_spi_dma_filter,
@@ -990,7 +993,7 @@
 	}
 
 	espi->dma_tx_data.port = EP93XX_DMA_SSP;
-	espi->dma_tx_data.direction = DMA_TO_DEVICE;
+	espi->dma_tx_data.direction = DMA_MEM_TO_DEV;
 	espi->dma_tx_data.name = "ep93xx-spi-tx";
 
 	espi->dma_tx = dma_request_channel(mask, ep93xx_spi_dma_filter,
diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c
index f1f5efb..2f9cb43 100644
--- a/drivers/spi/spi-pl022.c
+++ b/drivers/spi/spi-pl022.c
@@ -900,11 +900,11 @@
 {
 	struct dma_slave_config rx_conf = {
 		.src_addr = SSP_DR(pl022->phybase),
-		.direction = DMA_FROM_DEVICE,
+		.direction = DMA_DEV_TO_MEM,
 	};
 	struct dma_slave_config tx_conf = {
 		.dst_addr = SSP_DR(pl022->phybase),
-		.direction = DMA_TO_DEVICE,
+		.direction = DMA_MEM_TO_DEV,
 	};
 	unsigned int pages;
 	int ret;
@@ -1041,7 +1041,7 @@
 	rxdesc = rxchan->device->device_prep_slave_sg(rxchan,
 				      pl022->sgt_rx.sgl,
 				      rx_sglen,
-				      DMA_FROM_DEVICE,
+				      DMA_DEV_TO_MEM,
 				      DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 	if (!rxdesc)
 		goto err_rxdesc;
@@ -1049,7 +1049,7 @@
 	txdesc = txchan->device->device_prep_slave_sg(txchan,
 				      pl022->sgt_tx.sgl,
 				      tx_sglen,
-				      DMA_TO_DEVICE,
+				      DMA_MEM_TO_DEV,
 				      DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 	if (!txdesc)
 		goto err_txdesc;
diff --git a/drivers/spi/spi-topcliff-pch.c b/drivers/spi/spi-topcliff-pch.c
index 7086583..2a6429d 100644
--- a/drivers/spi/spi-topcliff-pch.c
+++ b/drivers/spi/spi-topcliff-pch.c
@@ -1079,7 +1079,7 @@
 	}
 	sg = dma->sg_rx_p;
 	desc_rx = dma->chan_rx->device->device_prep_slave_sg(dma->chan_rx, sg,
-					num, DMA_FROM_DEVICE,
+					num, DMA_DEV_TO_MEM,
 					DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 	if (!desc_rx) {
 		dev_err(&data->master->dev, "%s:device_prep_slave_sg Failed\n",
@@ -1124,7 +1124,7 @@
 	}
 	sg = dma->sg_tx_p;
 	desc_tx = dma->chan_tx->device->device_prep_slave_sg(dma->chan_tx,
-					sg, num, DMA_TO_DEVICE,
+					sg, num, DMA_MEM_TO_DEV,
 					DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 	if (!desc_tx) {
 		dev_err(&data->master->dev, "%s:device_prep_slave_sg Failed\n",
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index 8599545..ac44af1 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -27,8 +27,7 @@
 #include <scsi/scsi_device.h>
 #include <scsi/iscsi_proto.h>
 #include <target/target_core_base.h>
-#include <target/target_core_tmr.h>
-#include <target/target_core_transport.h>
+#include <target/target_core_fabric.h>
 
 #include "iscsi_target_core.h"
 #include "iscsi_target_parameters.h"
@@ -284,8 +283,8 @@
 			sock_in6 = (struct sockaddr_in6 *)sockaddr;
 			sock_in6_e = (struct sockaddr_in6 *)&np->np_sockaddr;
 
-			if (!memcmp((void *)&sock_in6->sin6_addr.in6_u,
-				    (void *)&sock_in6_e->sin6_addr.in6_u,
+			if (!memcmp(&sock_in6->sin6_addr.in6_u,
+				    &sock_in6_e->sin6_addr.in6_u,
 				    sizeof(struct in6_addr)))
 				ip_match = 1;
 
@@ -1225,7 +1224,7 @@
 
 	crypto_hash_init(hash);
 
-	sg_init_one(&sg, (u8 *)buf, payload_length);
+	sg_init_one(&sg, buf, payload_length);
 	crypto_hash_update(hash, &sg, payload_length);
 
 	if (padding) {
@@ -1603,7 +1602,7 @@
 		/*
 		 * Attach ping data to struct iscsi_cmd->buf_ptr.
 		 */
-		cmd->buf_ptr = (void *)ping_data;
+		cmd->buf_ptr = ping_data;
 		cmd->buf_ptr_size = payload_length;
 
 		pr_debug("Got %u bytes of NOPOUT ping"
@@ -3197,7 +3196,7 @@
 			end_of_buf = 1;
 			goto eob;
 		}
-		memcpy((void *)payload + payload_len, buf, len);
+		memcpy(payload + payload_len, buf, len);
 		payload_len += len;
 
 		spin_lock(&tiqn->tiqn_tpg_lock);
@@ -3229,7 +3228,7 @@
 					end_of_buf = 1;
 					goto eob;
 				}
-				memcpy((void *)payload + payload_len, buf, len);
+				memcpy(payload + payload_len, buf, len);
 				payload_len += len;
 			}
 			spin_unlock(&tpg->tpg_np_lock);
@@ -3486,7 +3485,7 @@
 	struct iscsi_conn *conn;
 	struct iscsi_queue_req *qr = NULL;
 	struct se_cmd *se_cmd;
-	struct iscsi_thread_set *ts = (struct iscsi_thread_set *)arg;
+	struct iscsi_thread_set *ts = arg;
 	/*
 	 * Allow ourselves to be interrupted by SIGINT so that a
 	 * connection recovery / failure event can be triggered externally.
@@ -3775,7 +3774,7 @@
 	u8 buffer[ISCSI_HDR_LEN], opcode;
 	u32 checksum = 0, digest = 0;
 	struct iscsi_conn *conn = NULL;
-	struct iscsi_thread_set *ts = (struct iscsi_thread_set *)arg;
+	struct iscsi_thread_set *ts = arg;
 	struct kvec iov;
 	/*
 	 * Allow ourselves to be interrupted by SIGINT so that a
diff --git a/drivers/target/iscsi/iscsi_target_auth.c b/drivers/target/iscsi/iscsi_target_auth.c
index 1cd6ce3..db0cf7c 100644
--- a/drivers/target/iscsi/iscsi_target_auth.c
+++ b/drivers/target/iscsi/iscsi_target_auth.c
@@ -82,7 +82,7 @@
 	unsigned int *c_len)
 {
 	unsigned char challenge_asciihex[CHAP_CHALLENGE_LENGTH * 2 + 1];
-	struct iscsi_chap *chap = (struct iscsi_chap *) conn->auth_protocol;
+	struct iscsi_chap *chap = conn->auth_protocol;
 
 	memset(challenge_asciihex, 0, CHAP_CHALLENGE_LENGTH * 2 + 1);
 
@@ -120,7 +120,7 @@
 	if (!conn->auth_protocol)
 		return NULL;
 
-	chap = (struct iscsi_chap *) conn->auth_protocol;
+	chap = conn->auth_protocol;
 	/*
 	 * We only support MD5 MDA presently.
 	 */
@@ -165,14 +165,15 @@
 	unsigned int *nr_out_len)
 {
 	char *endptr;
-	unsigned char id, digest[MD5_SIGNATURE_SIZE];
+	unsigned long id;
+	unsigned char digest[MD5_SIGNATURE_SIZE];
 	unsigned char type, response[MD5_SIGNATURE_SIZE * 2 + 2];
 	unsigned char identifier[10], *challenge = NULL;
 	unsigned char *challenge_binhex = NULL;
 	unsigned char client_digest[MD5_SIGNATURE_SIZE];
 	unsigned char server_digest[MD5_SIGNATURE_SIZE];
 	unsigned char chap_n[MAX_CHAP_N_SIZE], chap_r[MAX_RESPONSE_LENGTH];
-	struct iscsi_chap *chap = (struct iscsi_chap *) conn->auth_protocol;
+	struct iscsi_chap *chap = conn->auth_protocol;
 	struct crypto_hash *tfm;
 	struct hash_desc desc;
 	struct scatterlist sg;
@@ -246,7 +247,7 @@
 		goto out;
 	}
 
-	sg_init_one(&sg, (void *)&chap->id, 1);
+	sg_init_one(&sg, &chap->id, 1);
 	ret = crypto_hash_update(&desc, &sg, 1);
 	if (ret < 0) {
 		pr_err("crypto_hash_update() failed for id\n");
@@ -254,7 +255,7 @@
 		goto out;
 	}
 
-	sg_init_one(&sg, (void *)&auth->password, strlen(auth->password));
+	sg_init_one(&sg, &auth->password, strlen(auth->password));
 	ret = crypto_hash_update(&desc, &sg, strlen(auth->password));
 	if (ret < 0) {
 		pr_err("crypto_hash_update() failed for password\n");
@@ -262,7 +263,7 @@
 		goto out;
 	}
 
-	sg_init_one(&sg, (void *)chap->challenge, CHAP_CHALLENGE_LENGTH);
+	sg_init_one(&sg, chap->challenge, CHAP_CHALLENGE_LENGTH);
 	ret = crypto_hash_update(&desc, &sg, CHAP_CHALLENGE_LENGTH);
 	if (ret < 0) {
 		pr_err("crypto_hash_update() failed for challenge\n");
@@ -305,14 +306,17 @@
 	}
 
 	if (type == HEX)
-		id = (unsigned char)simple_strtoul((char *)&identifier[2],
-					&endptr, 0);
+		id = simple_strtoul(&identifier[2], &endptr, 0);
 	else
-		id = (unsigned char)simple_strtoul(identifier, &endptr, 0);
+		id = simple_strtoul(identifier, &endptr, 0);
+	if (id > 255) {
+		pr_err("chap identifier: %lu greater than 255\n", id);
+		goto out;
+	}
 	/*
 	 * RFC 1994 says Identifier is no more than octet (8 bits).
 	 */
-	pr_debug("[server] Got CHAP_I=%d\n", id);
+	pr_debug("[server] Got CHAP_I=%lu\n", id);
 	/*
 	 * Get CHAP_C.
 	 */
@@ -351,7 +355,7 @@
 		goto out;
 	}
 
-	sg_init_one(&sg, (void *)&id, 1);
+	sg_init_one(&sg, &id, 1);
 	ret = crypto_hash_update(&desc, &sg, 1);
 	if (ret < 0) {
 		pr_err("crypto_hash_update() failed for id\n");
@@ -359,7 +363,7 @@
 		goto out;
 	}
 
-	sg_init_one(&sg, (void *)auth->password_mutual,
+	sg_init_one(&sg, auth->password_mutual,
 				strlen(auth->password_mutual));
 	ret = crypto_hash_update(&desc, &sg, strlen(auth->password_mutual));
 	if (ret < 0) {
@@ -371,7 +375,7 @@
 	/*
 	 * Convert received challenge to binary hex.
 	 */
-	sg_init_one(&sg, (void *)challenge_binhex, challenge_len);
+	sg_init_one(&sg, challenge_binhex, challenge_len);
 	ret = crypto_hash_update(&desc, &sg, challenge_len);
 	if (ret < 0) {
 		pr_err("crypto_hash_update() failed for ma challenge\n");
@@ -414,7 +418,7 @@
 	char *nr_out_ptr,
 	unsigned int *nr_out_len)
 {
-	struct iscsi_chap *chap = (struct iscsi_chap *) conn->auth_protocol;
+	struct iscsi_chap *chap = conn->auth_protocol;
 
 	switch (chap->digest_type) {
 	case CHAP_DIGEST_MD5:
@@ -437,7 +441,7 @@
 	int *in_len,
 	int *out_len)
 {
-	struct iscsi_chap *chap = (struct iscsi_chap *) conn->auth_protocol;
+	struct iscsi_chap *chap = conn->auth_protocol;
 
 	if (!chap) {
 		chap = chap_server_open(conn, auth, in_text, out_text, out_len);
diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c
index db32784..3468caa 100644
--- a/drivers/target/iscsi/iscsi_target_configfs.c
+++ b/drivers/target/iscsi/iscsi_target_configfs.c
@@ -22,12 +22,8 @@
 #include <linux/configfs.h>
 #include <linux/export.h>
 #include <target/target_core_base.h>
-#include <target/target_core_transport.h>
-#include <target/target_core_fabric_ops.h>
+#include <target/target_core_fabric.h>
 #include <target/target_core_fabric_configfs.h>
-#include <target/target_core_fabric_lib.h>
-#include <target/target_core_device.h>
-#include <target/target_core_tpg.h>
 #include <target/target_core_configfs.h>
 #include <target/configfs_macros.h>
 
@@ -56,8 +52,7 @@
 {
 	struct se_portal_group *se_tpg = container_of(to_config_group(item),
 					struct se_portal_group, tpg_group);
-	struct iscsi_portal_group *tpg =
-			(struct iscsi_portal_group *)se_tpg->se_tpg_fabric_ptr;
+	struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
 	int ret;
 
 	if (!tpg) {
@@ -1225,7 +1220,7 @@
 
 	ret = core_tpg_register(
 			&lio_target_fabric_configfs->tf_ops,
-			wwn, &tpg->tpg_se_tpg, (void *)tpg,
+			wwn, &tpg->tpg_se_tpg, tpg,
 			TRANSPORT_TPG_TYPE_NORMAL);
 	if (ret < 0)
 		return NULL;
diff --git a/drivers/target/iscsi/iscsi_target_device.c b/drivers/target/iscsi/iscsi_target_device.c
index a19fa5e..f63ea35 100644
--- a/drivers/target/iscsi/iscsi_target_device.c
+++ b/drivers/target/iscsi/iscsi_target_device.c
@@ -21,8 +21,7 @@
 
 #include <scsi/scsi_device.h>
 #include <target/target_core_base.h>
-#include <target/target_core_device.h>
-#include <target/target_core_transport.h>
+#include <target/target_core_fabric.h>
 
 #include "iscsi_target_core.h"
 #include "iscsi_target_device.h"
diff --git a/drivers/target/iscsi/iscsi_target_erl0.c b/drivers/target/iscsi/iscsi_target_erl0.c
index b7ffc3c..4784511 100644
--- a/drivers/target/iscsi/iscsi_target_erl0.c
+++ b/drivers/target/iscsi/iscsi_target_erl0.c
@@ -21,7 +21,7 @@
 
 #include <scsi/iscsi_proto.h>
 #include <target/target_core_base.h>
-#include <target/target_core_transport.h>
+#include <target/target_core_fabric.h>
 
 #include "iscsi_target_core.h"
 #include "iscsi_target_seq_pdu_list.h"
diff --git a/drivers/target/iscsi/iscsi_target_erl1.c b/drivers/target/iscsi/iscsi_target_erl1.c
index 101b1be..255c0d6 100644
--- a/drivers/target/iscsi/iscsi_target_erl1.c
+++ b/drivers/target/iscsi/iscsi_target_erl1.c
@@ -21,7 +21,7 @@
 #include <linux/list.h>
 #include <scsi/iscsi_proto.h>
 #include <target/target_core_base.h>
-#include <target/target_core_transport.h>
+#include <target/target_core_fabric.h>
 
 #include "iscsi_target_core.h"
 #include "iscsi_target_seq_pdu_list.h"
diff --git a/drivers/target/iscsi/iscsi_target_erl2.c b/drivers/target/iscsi/iscsi_target_erl2.c
index 0b8404c..1af1f21 100644
--- a/drivers/target/iscsi/iscsi_target_erl2.c
+++ b/drivers/target/iscsi/iscsi_target_erl2.c
@@ -21,7 +21,7 @@
 
 #include <scsi/iscsi_proto.h>
 #include <target/target_core_base.h>
-#include <target/target_core_transport.h>
+#include <target/target_core_fabric.h>
 
 #include "iscsi_target_core.h"
 #include "iscsi_target_datain_values.h"
diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
index d734bde..373b0cc 100644
--- a/drivers/target/iscsi/iscsi_target_login.c
+++ b/drivers/target/iscsi/iscsi_target_login.c
@@ -23,7 +23,7 @@
 #include <linux/crypto.h>
 #include <scsi/iscsi_proto.h>
 #include <target/target_core_base.h>
-#include <target/target_core_transport.h>
+#include <target/target_core_fabric.h>
 
 #include "iscsi_target_core.h"
 #include "iscsi_target_tq.h"
@@ -143,7 +143,7 @@
 	list_for_each_entry_safe(se_sess, se_sess_tmp, &se_tpg->tpg_sess_list,
 			sess_list) {
 
-		sess_p = (struct iscsi_session *)se_sess->fabric_sess_ptr;
+		sess_p = se_sess->fabric_sess_ptr;
 		spin_lock(&sess_p->conn_lock);
 		if (atomic_read(&sess_p->session_fall_back_to_erl0) ||
 		    atomic_read(&sess_p->session_logout) ||
@@ -151,9 +151,9 @@
 			spin_unlock(&sess_p->conn_lock);
 			continue;
 		}
-		if (!memcmp((void *)sess_p->isid, (void *)conn->sess->isid, 6) &&
-		   (!strcmp((void *)sess_p->sess_ops->InitiatorName,
-			    (void *)initiatorname_param->value) &&
+		if (!memcmp(sess_p->isid, conn->sess->isid, 6) &&
+		   (!strcmp(sess_p->sess_ops->InitiatorName,
+			    initiatorname_param->value) &&
 		   (sess_p->sess_ops->SessionType == sessiontype))) {
 			atomic_set(&sess_p->session_reinstatement, 1);
 			spin_unlock(&sess_p->conn_lock);
@@ -229,7 +229,7 @@
 
 	iscsi_login_set_conn_values(sess, conn, pdu->cid);
 	sess->init_task_tag	= pdu->itt;
-	memcpy((void *)&sess->isid, (void *)pdu->isid, 6);
+	memcpy(&sess->isid, pdu->isid, 6);
 	sess->exp_cmd_sn	= pdu->cmdsn;
 	INIT_LIST_HEAD(&sess->sess_conn_list);
 	INIT_LIST_HEAD(&sess->sess_ooo_cmdsn_list);
@@ -440,8 +440,7 @@
 		    atomic_read(&sess_p->session_logout) ||
 		   (sess_p->time2retain_timer_flags & ISCSI_TF_EXPIRED))
 			continue;
-		if (!memcmp((const void *)sess_p->isid,
-		     (const void *)pdu->isid, 6) &&
+		if (!memcmp(sess_p->isid, pdu->isid, 6) &&
 		     (sess_p->tsih == pdu->tsih)) {
 			iscsit_inc_session_usage_count(sess_p);
 			iscsit_stop_time2retain_timer(sess_p);
@@ -654,7 +653,7 @@
 
 	spin_lock_bh(&se_tpg->session_lock);
 	__transport_register_session(&sess->tpg->tpg_se_tpg,
-			se_sess->se_node_acl, se_sess, (void *)sess);
+			se_sess->se_node_acl, se_sess, sess);
 	pr_debug("Moving to TARG_SESS_STATE_LOGGED_IN.\n");
 	sess->session_state = TARG_SESS_STATE_LOGGED_IN;
 
@@ -811,7 +810,7 @@
 	 * Setup the np->np_sockaddr from the passed sockaddr setup
 	 * in iscsi_target_configfs.c code..
 	 */
-	memcpy((void *)&np->np_sockaddr, (void *)sockaddr,
+	memcpy(&np->np_sockaddr, sockaddr,
 			sizeof(struct __kernel_sockaddr_storage));
 
 	if (sockaddr->ss_family == AF_INET6)
@@ -821,6 +820,7 @@
 	/*
 	 * Set SO_REUSEADDR, and disable Nagel Algorithm with TCP_NODELAY.
 	 */
+	/* FIXME: Someone please explain why this is endian-safe */
 	opt = 1;
 	if (np->np_network_transport == ISCSI_TCP) {
 		ret = kernel_setsockopt(sock, IPPROTO_TCP, TCP_NODELAY,
@@ -832,6 +832,7 @@
 		}
 	}
 
+	/* FIXME: Someone please explain why this is endian-safe */
 	ret = kernel_setsockopt(sock, SOL_SOCKET, SO_REUSEADDR,
 			(char *)&opt, sizeof(opt));
 	if (ret < 0) {
@@ -1206,7 +1207,7 @@
 
 int iscsi_target_login_thread(void *arg)
 {
-	struct iscsi_np *np = (struct iscsi_np *)arg;
+	struct iscsi_np *np = arg;
 	int ret;
 
 	allow_signal(SIGINT);
diff --git a/drivers/target/iscsi/iscsi_target_nego.c b/drivers/target/iscsi/iscsi_target_nego.c
index 98936cb..e89fa74 100644
--- a/drivers/target/iscsi/iscsi_target_nego.c
+++ b/drivers/target/iscsi/iscsi_target_nego.c
@@ -21,7 +21,7 @@
 #include <linux/ctype.h>
 #include <scsi/iscsi_proto.h>
 #include <target/target_core_base.h>
-#include <target/target_core_tpg.h>
+#include <target/target_core_fabric.h>
 
 #include "iscsi_target_core.h"
 #include "iscsi_target_parameters.h"
@@ -732,7 +732,7 @@
 	u32 iqn_size = strlen(param_buf), i;
 
 	for (i = 0; i < iqn_size; i++) {
-		c = (char *)&param_buf[i];
+		c = &param_buf[i];
 		if (!isupper(*c))
 			continue;
 
diff --git a/drivers/target/iscsi/iscsi_target_nodeattrib.c b/drivers/target/iscsi/iscsi_target_nodeattrib.c
index aeafbe0..b3c699c 100644
--- a/drivers/target/iscsi/iscsi_target_nodeattrib.c
+++ b/drivers/target/iscsi/iscsi_target_nodeattrib.c
@@ -19,7 +19,6 @@
  ******************************************************************************/
 
 #include <target/target_core_base.h>
-#include <target/target_core_transport.h>
 
 #include "iscsi_target_core.h"
 #include "iscsi_target_device.h"
@@ -135,7 +134,7 @@
 		spin_lock_bh(&se_nacl->nacl_sess_lock);
 		se_sess = se_nacl->nacl_sess;
 		if (se_sess) {
-			sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
+			sess = se_sess->fabric_sess_ptr;
 
 			spin_lock(&sess->conn_lock);
 			list_for_each_entry(conn, &sess->sess_conn_list,
diff --git a/drivers/target/iscsi/iscsi_target_stat.c b/drivers/target/iscsi/iscsi_target_stat.c
index f1db830..421d694 100644
--- a/drivers/target/iscsi/iscsi_target_stat.c
+++ b/drivers/target/iscsi/iscsi_target_stat.c
@@ -23,7 +23,6 @@
 #include <linux/export.h>
 #include <scsi/iscsi_proto.h>
 #include <target/target_core_base.h>
-#include <target/target_core_transport.h>
 #include <target/configfs_macros.h>
 
 #include "iscsi_target_core.h"
@@ -746,7 +745,7 @@
 	spin_lock_bh(&se_nacl->nacl_sess_lock);
 	se_sess = se_nacl->nacl_sess;
 	if (se_sess) {
-		sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
+		sess = se_sess->fabric_sess_ptr;
 		if (sess)
 			ret = snprintf(page, PAGE_SIZE, "%u\n",
 				sess->sess_ops->SessionType ? 0 : ISCSI_NODE_INDEX);
@@ -770,7 +769,7 @@
 	spin_lock_bh(&se_nacl->nacl_sess_lock);
 	se_sess = se_nacl->nacl_sess;
 	if (se_sess) {
-		sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
+		sess = se_sess->fabric_sess_ptr;
 		if (sess)
 			ret = snprintf(page, PAGE_SIZE, "%u\n",
 					sess->session_index);
@@ -794,7 +793,7 @@
 	spin_lock_bh(&se_nacl->nacl_sess_lock);
 	se_sess = se_nacl->nacl_sess;
 	if (se_sess) {
-		sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
+		sess = se_sess->fabric_sess_ptr;
 		if (sess)
 			ret = snprintf(page, PAGE_SIZE, "%u\n", sess->cmd_pdus);
 	}
@@ -817,7 +816,7 @@
 	spin_lock_bh(&se_nacl->nacl_sess_lock);
 	se_sess = se_nacl->nacl_sess;
 	if (se_sess) {
-		sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
+		sess = se_sess->fabric_sess_ptr;
 		if (sess)
 			ret = snprintf(page, PAGE_SIZE, "%u\n", sess->rsp_pdus);
 	}
@@ -840,7 +839,7 @@
 	spin_lock_bh(&se_nacl->nacl_sess_lock);
 	se_sess = se_nacl->nacl_sess;
 	if (se_sess) {
-		sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
+		sess = se_sess->fabric_sess_ptr;
 		if (sess)
 			ret = snprintf(page, PAGE_SIZE, "%llu\n",
 				(unsigned long long)sess->tx_data_octets);
@@ -864,7 +863,7 @@
 	spin_lock_bh(&se_nacl->nacl_sess_lock);
 	se_sess = se_nacl->nacl_sess;
 	if (se_sess) {
-		sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
+		sess = se_sess->fabric_sess_ptr;
 		if (sess)
 			ret = snprintf(page, PAGE_SIZE, "%llu\n",
 				(unsigned long long)sess->rx_data_octets);
@@ -888,7 +887,7 @@
 	spin_lock_bh(&se_nacl->nacl_sess_lock);
 	se_sess = se_nacl->nacl_sess;
 	if (se_sess) {
-		sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
+		sess = se_sess->fabric_sess_ptr;
 		if (sess)
 			ret = snprintf(page, PAGE_SIZE, "%u\n",
 					sess->conn_digest_errors);
@@ -912,7 +911,7 @@
 	spin_lock_bh(&se_nacl->nacl_sess_lock);
 	se_sess = se_nacl->nacl_sess;
 	if (se_sess) {
-		sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
+		sess = se_sess->fabric_sess_ptr;
 		if (sess)
 			ret = snprintf(page, PAGE_SIZE, "%u\n",
 					sess->conn_timeout_errors);
diff --git a/drivers/target/iscsi/iscsi_target_tmr.c b/drivers/target/iscsi/iscsi_target_tmr.c
index 490207e..255ed35 100644
--- a/drivers/target/iscsi/iscsi_target_tmr.c
+++ b/drivers/target/iscsi/iscsi_target_tmr.c
@@ -21,7 +21,7 @@
 #include <asm/unaligned.h>
 #include <scsi/iscsi_proto.h>
 #include <target/target_core_base.h>
-#include <target/target_core_transport.h>
+#include <target/target_core_fabric.h>
 
 #include "iscsi_target_core.h"
 #include "iscsi_target_seq_pdu_list.h"
diff --git a/drivers/target/iscsi/iscsi_target_tpg.c b/drivers/target/iscsi/iscsi_target_tpg.c
index d4cf2cd..879d8d0 100644
--- a/drivers/target/iscsi/iscsi_target_tpg.c
+++ b/drivers/target/iscsi/iscsi_target_tpg.c
@@ -19,10 +19,8 @@
  ******************************************************************************/
 
 #include <target/target_core_base.h>
-#include <target/target_core_transport.h>
-#include <target/target_core_fabric_ops.h>
+#include <target/target_core_fabric.h>
 #include <target/target_core_configfs.h>
-#include <target/target_core_tpg.h>
 
 #include "iscsi_target_core.h"
 #include "iscsi_target_erl0.h"
@@ -72,7 +70,7 @@
 
 	ret = core_tpg_register(
 			&lio_target_fabric_configfs->tf_ops,
-			NULL, &tpg->tpg_se_tpg, (void *)tpg,
+			NULL, &tpg->tpg_se_tpg, tpg,
 			TRANSPORT_TPG_TYPE_DISCOVERY);
 	if (ret < 0) {
 		kfree(tpg);
diff --git a/drivers/target/iscsi/iscsi_target_util.c b/drivers/target/iscsi/iscsi_target_util.c
index 02348f7..a05ca1c 100644
--- a/drivers/target/iscsi/iscsi_target_util.c
+++ b/drivers/target/iscsi/iscsi_target_util.c
@@ -22,9 +22,7 @@
 #include <scsi/scsi_tcq.h>
 #include <scsi/iscsi_proto.h>
 #include <target/target_core_base.h>
-#include <target/target_core_transport.h>
-#include <target/target_core_tmr.h>
-#include <target/target_core_fabric_ops.h>
+#include <target/target_core_fabric.h>
 #include <target/target_core_configfs.h>
 
 #include "iscsi_target_core.h"
@@ -289,7 +287,7 @@
 	}
 
 	se_cmd->se_tmr_req = core_tmr_alloc_req(se_cmd,
-				(void *)cmd->tmr_req, tcm_function,
+				cmd->tmr_req, tcm_function,
 				GFP_KERNEL);
 	if (!se_cmd->se_tmr_req)
 		goto out;
@@ -1066,7 +1064,7 @@
 	if (tiqn) {
 		spin_lock_bh(&tiqn->sess_err_stats.lock);
 		strcpy(tiqn->sess_err_stats.last_sess_fail_rem_name,
-				(void *)conn->sess->sess_ops->InitiatorName);
+				conn->sess->sess_ops->InitiatorName);
 		tiqn->sess_err_stats.last_sess_failure_type =
 				ISCSI_SESS_ERR_CXN_TIMEOUT;
 		tiqn->sess_err_stats.cxn_timeout_errors++;
diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c
index 81d5832..c47ff7f 100644
--- a/drivers/target/loopback/tcm_loop.c
+++ b/drivers/target/loopback/tcm_loop.c
@@ -33,14 +33,9 @@
 #include <scsi/scsi_cmnd.h>
 
 #include <target/target_core_base.h>
-#include <target/target_core_transport.h>
-#include <target/target_core_fabric_ops.h>
+#include <target/target_core_fabric.h>
 #include <target/target_core_fabric_configfs.h>
-#include <target/target_core_fabric_lib.h>
 #include <target/target_core_configfs.h>
-#include <target/target_core_device.h>
-#include <target/target_core_tpg.h>
-#include <target/target_core_tmr.h>
 
 #include "tcm_loop.h"
 
@@ -421,11 +416,11 @@
 	.queuecommand		= tcm_loop_queuecommand,
 	.change_queue_depth	= tcm_loop_change_queue_depth,
 	.eh_device_reset_handler = tcm_loop_device_reset,
-	.can_queue		= TL_SCSI_CAN_QUEUE,
+	.can_queue		= 1024,
 	.this_id		= -1,
-	.sg_tablesize		= TL_SCSI_SG_TABLESIZE,
-	.cmd_per_lun		= TL_SCSI_CMD_PER_LUN,
-	.max_sectors		= TL_SCSI_MAX_SECTORS,
+	.sg_tablesize		= 256,
+	.cmd_per_lun		= 1024,
+	.max_sectors		= 0xFFFF,
 	.use_clustering		= DISABLE_CLUSTERING,
 	.slave_alloc		= tcm_loop_slave_alloc,
 	.slave_configure	= tcm_loop_slave_configure,
@@ -564,8 +559,7 @@
 
 static u8 tcm_loop_get_fabric_proto_ident(struct se_portal_group *se_tpg)
 {
-	struct tcm_loop_tpg *tl_tpg =
-			(struct tcm_loop_tpg *)se_tpg->se_tpg_fabric_ptr;
+	struct tcm_loop_tpg *tl_tpg = se_tpg->se_tpg_fabric_ptr;
 	struct tcm_loop_hba *tl_hba = tl_tpg->tl_hba;
 	/*
 	 * tl_proto_id is set at tcm_loop_configfs.c:tcm_loop_make_scsi_hba()
@@ -592,8 +586,7 @@
 
 static char *tcm_loop_get_endpoint_wwn(struct se_portal_group *se_tpg)
 {
-	struct tcm_loop_tpg *tl_tpg =
-		(struct tcm_loop_tpg *)se_tpg->se_tpg_fabric_ptr;
+	struct tcm_loop_tpg *tl_tpg = se_tpg->se_tpg_fabric_ptr;
 	/*
 	 * Return the passed NAA identifier for the SAS Target Port
 	 */
@@ -602,8 +595,7 @@
 
 static u16 tcm_loop_get_tag(struct se_portal_group *se_tpg)
 {
-	struct tcm_loop_tpg *tl_tpg =
-		(struct tcm_loop_tpg *)se_tpg->se_tpg_fabric_ptr;
+	struct tcm_loop_tpg *tl_tpg = se_tpg->se_tpg_fabric_ptr;
 	/*
 	 * This Tag is used when forming SCSI Name identifier in EVPD=1 0x83
 	 * to represent the SCSI Target Port.
@@ -623,8 +615,7 @@
 	int *format_code,
 	unsigned char *buf)
 {
-	struct tcm_loop_tpg *tl_tpg =
-			(struct tcm_loop_tpg *)se_tpg->se_tpg_fabric_ptr;
+	struct tcm_loop_tpg *tl_tpg = se_tpg->se_tpg_fabric_ptr;
 	struct tcm_loop_hba *tl_hba = tl_tpg->tl_hba;
 
 	switch (tl_hba->tl_proto_id) {
@@ -653,8 +644,7 @@
 	struct t10_pr_registration *pr_reg,
 	int *format_code)
 {
-	struct tcm_loop_tpg *tl_tpg =
-			(struct tcm_loop_tpg *)se_tpg->se_tpg_fabric_ptr;
+	struct tcm_loop_tpg *tl_tpg = se_tpg->se_tpg_fabric_ptr;
 	struct tcm_loop_hba *tl_hba = tl_tpg->tl_hba;
 
 	switch (tl_hba->tl_proto_id) {
@@ -687,8 +677,7 @@
 	u32 *out_tid_len,
 	char **port_nexus_ptr)
 {
-	struct tcm_loop_tpg *tl_tpg =
-			(struct tcm_loop_tpg *)se_tpg->se_tpg_fabric_ptr;
+	struct tcm_loop_tpg *tl_tpg = se_tpg->se_tpg_fabric_ptr;
 	struct tcm_loop_hba *tl_hba = tl_tpg->tl_hba;
 
 	switch (tl_hba->tl_proto_id) {
diff --git a/drivers/target/loopback/tcm_loop.h b/drivers/target/loopback/tcm_loop.h
index 6b76c7a..15a0364 100644
--- a/drivers/target/loopback/tcm_loop.h
+++ b/drivers/target/loopback/tcm_loop.h
@@ -1,16 +1,7 @@
 #define TCM_LOOP_VERSION		"v2.1-rc1"
 #define TL_WWN_ADDR_LEN			256
 #define TL_TPGS_PER_HBA			32
-/*
- * Defaults for struct scsi_host_template tcm_loop_driver_template
- *
- * We use large can_queue and cmd_per_lun here and let TCM enforce
- * the underlying se_device_t->queue_depth.
- */
-#define TL_SCSI_CAN_QUEUE		1024
-#define TL_SCSI_CMD_PER_LUN		1024
-#define TL_SCSI_MAX_SECTORS		1024
-#define TL_SCSI_SG_TABLESIZE		256
+
 /*
  * Used in tcm_loop_driver_probe() for struct Scsi_Host->max_cmd_len
  */
diff --git a/drivers/target/target_core_alua.c b/drivers/target/target_core_alua.c
index 1dcbef4..1b1edd1 100644
--- a/drivers/target/target_core_alua.c
+++ b/drivers/target/target_core_alua.c
@@ -32,13 +32,12 @@
 #include <scsi/scsi_cmnd.h>
 
 #include <target/target_core_base.h>
-#include <target/target_core_device.h>
-#include <target/target_core_transport.h>
-#include <target/target_core_fabric_ops.h>
+#include <target/target_core_backend.h>
+#include <target/target_core_fabric.h>
 #include <target/target_core_configfs.h>
 
+#include "target_core_internal.h"
 #include "target_core_alua.h"
-#include "target_core_hba.h"
 #include "target_core_ua.h"
 
 static int core_alua_check_transition(int state, int *primary);
diff --git a/drivers/target/target_core_cdb.c b/drivers/target/target_core_cdb.c
index 831468b..2f2235e 100644
--- a/drivers/target/target_core_cdb.c
+++ b/drivers/target/target_core_cdb.c
@@ -29,10 +29,11 @@
 #include <scsi/scsi.h>
 
 #include <target/target_core_base.h>
-#include <target/target_core_transport.h>
-#include <target/target_core_fabric_ops.h>
+#include <target/target_core_backend.h>
+#include <target/target_core_fabric.h>
+
+#include "target_core_internal.h"
 #include "target_core_ua.h"
-#include "target_core_cdb.h"
 
 static void
 target_fill_alua_data(struct se_port *port, unsigned char *buf)
@@ -94,6 +95,18 @@
 	buf[2] = dev->transport->get_device_rev(dev);
 
 	/*
+	 * NORMACA and HISUP = 0, RESPONSE DATA FORMAT = 2
+	 *
+	 * SPC4 says:
+	 *   A RESPONSE DATA FORMAT field set to 2h indicates that the
+	 *   standard INQUIRY data is in the format defined in this
+	 *   standard. Response data format values less than 2h are
+	 *   obsolete. Response data format values greater than 2h are
+	 *   reserved.
+	 */
+	buf[3] = 2;
+
+	/*
 	 * Enable SCCS and TPGS fields for Emulated ALUA
 	 */
 	if (dev->se_sub_dev->t10_alua.alua_type == SPC3_ALUA_EMULATED)
@@ -115,11 +128,9 @@
 		goto out;
 	}
 
-	snprintf((unsigned char *)&buf[8], 8, "LIO-ORG");
-	snprintf((unsigned char *)&buf[16], 16, "%s",
-		 &dev->se_sub_dev->t10_wwn.model[0]);
-	snprintf((unsigned char *)&buf[32], 4, "%s",
-		 &dev->se_sub_dev->t10_wwn.revision[0]);
+	snprintf(&buf[8], 8, "LIO-ORG");
+	snprintf(&buf[16], 16, "%s", dev->se_sub_dev->t10_wwn.model);
+	snprintf(&buf[32], 4, "%s", dev->se_sub_dev->t10_wwn.revision);
 	buf[4] = 31; /* Set additional length to 31 */
 
 out:
@@ -138,8 +149,7 @@
 			SDF_EMULATED_VPD_UNIT_SERIAL) {
 		u32 unit_serial_len;
 
-		unit_serial_len =
-			strlen(&dev->se_sub_dev->t10_wwn.unit_serial[0]);
+		unit_serial_len = strlen(dev->se_sub_dev->t10_wwn.unit_serial);
 		unit_serial_len++; /* For NULL Terminator */
 
 		if (((len + 4) + unit_serial_len) > cmd->data_length) {
@@ -148,8 +158,8 @@
 			buf[3] = (len & 0xff);
 			return 0;
 		}
-		len += sprintf((unsigned char *)&buf[4], "%s",
-			&dev->se_sub_dev->t10_wwn.unit_serial[0]);
+		len += sprintf(&buf[4], "%s",
+			dev->se_sub_dev->t10_wwn.unit_serial);
 		len++; /* Extra Byte for NULL Terminator */
 		buf[3] = len;
 	}
@@ -279,14 +289,13 @@
 			len += (prod_len + unit_serial_len);
 			goto check_port;
 		}
-		id_len += sprintf((unsigned char *)&buf[off+12],
-				"%s:%s", prod,
+		id_len += sprintf(&buf[off+12], "%s:%s", prod,
 				&dev->se_sub_dev->t10_wwn.unit_serial[0]);
 	}
 	buf[off] = 0x2; /* ASCII */
 	buf[off+1] = 0x1; /* T10 Vendor ID */
 	buf[off+2] = 0x0;
-	memcpy((unsigned char *)&buf[off+4], "LIO-ORG", 8);
+	memcpy(&buf[off+4], "LIO-ORG", 8);
 	/* Extra Byte for NULL Terminator */
 	id_len++;
 	/* Identifier Length */
diff --git a/drivers/target/target_core_cdb.h b/drivers/target/target_core_cdb.h
deleted file mode 100644
index ad6b1e3..0000000
--- a/drivers/target/target_core_cdb.h
+++ /dev/null
@@ -1,14 +0,0 @@
-#ifndef TARGET_CORE_CDB_H
-#define TARGET_CORE_CDB_H
-
-int target_emulate_inquiry(struct se_task *task);
-int target_emulate_readcapacity(struct se_task *task);
-int target_emulate_readcapacity_16(struct se_task *task);
-int target_emulate_modesense(struct se_task *task);
-int target_emulate_request_sense(struct se_task *task);
-int target_emulate_unmap(struct se_task *task);
-int target_emulate_write_same(struct se_task *task);
-int target_emulate_synchronize_cache(struct se_task *task);
-int target_emulate_noop(struct se_task *task);
-
-#endif /* TARGET_CORE_CDB_H */
diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c
index 93d4f6a..0955bb8 100644
--- a/drivers/target/target_core_configfs.c
+++ b/drivers/target/target_core_configfs.c
@@ -39,18 +39,16 @@
 #include <linux/spinlock.h>
 
 #include <target/target_core_base.h>
-#include <target/target_core_device.h>
-#include <target/target_core_transport.h>
-#include <target/target_core_fabric_ops.h>
+#include <target/target_core_backend.h>
+#include <target/target_core_fabric.h>
 #include <target/target_core_fabric_configfs.h>
 #include <target/target_core_configfs.h>
 #include <target/configfs_macros.h>
 
+#include "target_core_internal.h"
 #include "target_core_alua.h"
-#include "target_core_hba.h"
 #include "target_core_pr.h"
 #include "target_core_rd.h"
-#include "target_core_stat.h"
 
 extern struct t10_alua_lu_gp *default_lu_gp;
 
@@ -1452,7 +1450,7 @@
 		return -ENOMEM;
 
 	orig = opts;
-	while ((ptr = strsep(&opts, ",")) != NULL) {
+	while ((ptr = strsep(&opts, ",\n")) != NULL) {
 		if (!*ptr)
 			continue;
 
@@ -1631,7 +1629,7 @@
 
 static ssize_t target_core_show_dev_info(void *p, char *page)
 {
-	struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p;
+	struct se_subsystem_dev *se_dev = p;
 	struct se_hba *hba = se_dev->se_dev_hba;
 	struct se_subsystem_api *t = hba->transport;
 	int bl = 0;
@@ -1659,7 +1657,7 @@
 	const char *page,
 	size_t count)
 {
-	struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p;
+	struct se_subsystem_dev *se_dev = p;
 	struct se_hba *hba = se_dev->se_dev_hba;
 	struct se_subsystem_api *t = hba->transport;
 
@@ -1682,7 +1680,7 @@
 
 static ssize_t target_core_show_dev_alias(void *p, char *page)
 {
-	struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p;
+	struct se_subsystem_dev *se_dev = p;
 
 	if (!(se_dev->su_dev_flags & SDF_USING_ALIAS))
 		return 0;
@@ -1695,7 +1693,7 @@
 	const char *page,
 	size_t count)
 {
-	struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p;
+	struct se_subsystem_dev *se_dev = p;
 	struct se_hba *hba = se_dev->se_dev_hba;
 	ssize_t read_bytes;
 
@@ -1710,6 +1708,9 @@
 	read_bytes = snprintf(&se_dev->se_dev_alias[0], SE_DEV_ALIAS_LEN,
 			"%s", page);
 
+	if (se_dev->se_dev_alias[read_bytes - 1] == '\n')
+		se_dev->se_dev_alias[read_bytes - 1] = '\0';
+
 	pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n",
 		config_item_name(&hba->hba_group.cg_item),
 		config_item_name(&se_dev->se_dev_group.cg_item),
@@ -1728,7 +1729,7 @@
 
 static ssize_t target_core_show_dev_udev_path(void *p, char *page)
 {
-	struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p;
+	struct se_subsystem_dev *se_dev = p;
 
 	if (!(se_dev->su_dev_flags & SDF_USING_UDEV_PATH))
 		return 0;
@@ -1741,7 +1742,7 @@
 	const char *page,
 	size_t count)
 {
-	struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p;
+	struct se_subsystem_dev *se_dev = p;
 	struct se_hba *hba = se_dev->se_dev_hba;
 	ssize_t read_bytes;
 
@@ -1756,6 +1757,9 @@
 	read_bytes = snprintf(&se_dev->se_dev_udev_path[0], SE_UDEV_PATH_LEN,
 			"%s", page);
 
+	if (se_dev->se_dev_udev_path[read_bytes - 1] == '\n')
+		se_dev->se_dev_udev_path[read_bytes - 1] = '\0';
+
 	pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n",
 		config_item_name(&hba->hba_group.cg_item),
 		config_item_name(&se_dev->se_dev_group.cg_item),
@@ -1777,7 +1781,7 @@
 	const char *page,
 	size_t count)
 {
-	struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p;
+	struct se_subsystem_dev *se_dev = p;
 	struct se_device *dev;
 	struct se_hba *hba = se_dev->se_dev_hba;
 	struct se_subsystem_api *t = hba->transport;
@@ -1822,7 +1826,7 @@
 static ssize_t target_core_show_alua_lu_gp(void *p, char *page)
 {
 	struct se_device *dev;
-	struct se_subsystem_dev *su_dev = (struct se_subsystem_dev *)p;
+	struct se_subsystem_dev *su_dev = p;
 	struct config_item *lu_ci;
 	struct t10_alua_lu_gp *lu_gp;
 	struct t10_alua_lu_gp_member *lu_gp_mem;
@@ -1860,7 +1864,7 @@
 	size_t count)
 {
 	struct se_device *dev;
-	struct se_subsystem_dev *su_dev = (struct se_subsystem_dev *)p;
+	struct se_subsystem_dev *su_dev = p;
 	struct se_hba *hba = su_dev->se_dev_hba;
 	struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL;
 	struct t10_alua_lu_gp_member *lu_gp_mem;
diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index 9b86394..0c5992f 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -42,13 +42,11 @@
 #include <scsi/scsi_device.h>
 
 #include <target/target_core_base.h>
-#include <target/target_core_device.h>
-#include <target/target_core_tpg.h>
-#include <target/target_core_transport.h>
-#include <target/target_core_fabric_ops.h>
+#include <target/target_core_backend.h>
+#include <target/target_core_fabric.h>
 
+#include "target_core_internal.h"
 #include "target_core_alua.h"
-#include "target_core_hba.h"
 #include "target_core_pr.h"
 #include "target_core_ua.h"
 
@@ -1134,8 +1132,6 @@
  */
 int se_dev_set_queue_depth(struct se_device *dev, u32 queue_depth)
 {
-	u32 orig_queue_depth = dev->queue_depth;
-
 	if (atomic_read(&dev->dev_export_obj.obj_access_count)) {
 		pr_err("dev[%p]: Unable to change SE Device TCQ while"
 			" dev_export_obj: %d count exists\n", dev,
@@ -1169,11 +1165,6 @@
 	}
 
 	dev->se_sub_dev->se_dev_attrib.queue_depth = dev->queue_depth = queue_depth;
-	if (queue_depth > orig_queue_depth)
-		atomic_add(queue_depth - orig_queue_depth, &dev->depth_left);
-	else if (queue_depth < orig_queue_depth)
-		atomic_sub(orig_queue_depth - queue_depth, &dev->depth_left);
-
 	pr_debug("dev[%p]: SE Device TCQ Depth changed to: %u\n",
 			dev, queue_depth);
 	return 0;
diff --git a/drivers/target/target_core_fabric_configfs.c b/drivers/target/target_core_fabric_configfs.c
index 09b6f87..4f77cce 100644
--- a/drivers/target/target_core_fabric_configfs.c
+++ b/drivers/target/target_core_fabric_configfs.c
@@ -36,18 +36,14 @@
 #include <linux/configfs.h>
 
 #include <target/target_core_base.h>
-#include <target/target_core_device.h>
-#include <target/target_core_tpg.h>
-#include <target/target_core_transport.h>
-#include <target/target_core_fabric_ops.h>
+#include <target/target_core_fabric.h>
 #include <target/target_core_fabric_configfs.h>
 #include <target/target_core_configfs.h>
 #include <target/configfs_macros.h>
 
+#include "target_core_internal.h"
 #include "target_core_alua.h"
-#include "target_core_hba.h"
 #include "target_core_pr.h"
-#include "target_core_stat.h"
 
 #define TF_CIT_SETUP(_name, _item_ops, _group_ops, _attrs)		\
 static void target_fabric_setup_##_name##_cit(struct target_fabric_configfs *tf) \
diff --git a/drivers/target/target_core_fabric_lib.c b/drivers/target/target_core_fabric_lib.c
index ec4249b..283a36e 100644
--- a/drivers/target/target_core_fabric_lib.c
+++ b/drivers/target/target_core_fabric_lib.c
@@ -34,13 +34,10 @@
 #include <scsi/scsi_cmnd.h>
 
 #include <target/target_core_base.h>
-#include <target/target_core_device.h>
-#include <target/target_core_transport.h>
-#include <target/target_core_fabric_lib.h>
-#include <target/target_core_fabric_ops.h>
+#include <target/target_core_fabric.h>
 #include <target/target_core_configfs.h>
 
-#include "target_core_hba.h"
+#include "target_core_internal.h"
 #include "target_core_pr.h"
 
 /*
@@ -402,7 +399,7 @@
 		add_len = ((buf[2] >> 8) & 0xff);
 		add_len |= (buf[3] & 0xff);
 
-		tid_len = strlen((char *)&buf[4]);
+		tid_len = strlen(&buf[4]);
 		tid_len += 4; /* Add four bytes for iSCSI Transport ID header */
 		tid_len += 1; /* Add one byte for NULL terminator */
 		padding = ((-tid_len) & 3);
@@ -423,11 +420,11 @@
 	 * format.
 	 */
 	if (format_code == 0x40) {
-		p = strstr((char *)&buf[4], ",i,0x");
+		p = strstr(&buf[4], ",i,0x");
 		if (!p) {
 			pr_err("Unable to locate \",i,0x\" seperator"
 				" for Initiator port identifier: %s\n",
-				(char *)&buf[4]);
+				&buf[4]);
 			return NULL;
 		}
 		*p = '\0'; /* Terminate iSCSI Name */
diff --git a/drivers/target/target_core_file.c b/drivers/target/target_core_file.c
index b4864fb..7ed58e2 100644
--- a/drivers/target/target_core_file.c
+++ b/drivers/target/target_core_file.c
@@ -37,8 +37,7 @@
 #include <scsi/scsi_host.h>
 
 #include <target/target_core_base.h>
-#include <target/target_core_device.h>
-#include <target/target_core_transport.h>
+#include <target/target_core_backend.h>
 
 #include "target_core_file.h"
 
@@ -86,7 +85,7 @@
 static void *fd_allocate_virtdevice(struct se_hba *hba, const char *name)
 {
 	struct fd_dev *fd_dev;
-	struct fd_host *fd_host = (struct fd_host *) hba->hba_ptr;
+	struct fd_host *fd_host = hba->hba_ptr;
 
 	fd_dev = kzalloc(sizeof(struct fd_dev), GFP_KERNEL);
 	if (!fd_dev) {
@@ -114,8 +113,8 @@
 	struct se_device *dev;
 	struct se_dev_limits dev_limits;
 	struct queue_limits *limits;
-	struct fd_dev *fd_dev = (struct fd_dev *) p;
-	struct fd_host *fd_host = (struct fd_host *) hba->hba_ptr;
+	struct fd_dev *fd_dev = p;
+	struct fd_host *fd_host = hba->hba_ptr;
 	mm_segment_t old_fs;
 	struct file *file;
 	struct inode *inode = NULL;
@@ -240,7 +239,7 @@
  */
 static void fd_free_device(void *p)
 {
-	struct fd_dev *fd_dev = (struct fd_dev *) p;
+	struct fd_dev *fd_dev = p;
 
 	if (fd_dev->fd_file) {
 		filp_close(fd_dev->fd_file, NULL);
@@ -498,7 +497,7 @@
 
 	orig = opts;
 
-	while ((ptr = strsep(&opts, ",")) != NULL) {
+	while ((ptr = strsep(&opts, ",\n")) != NULL) {
 		if (!*ptr)
 			continue;
 
@@ -559,7 +558,7 @@
 
 static ssize_t fd_check_configfs_dev_params(struct se_hba *hba, struct se_subsystem_dev *se_dev)
 {
-	struct fd_dev *fd_dev = (struct fd_dev *) se_dev->se_dev_su_ptr;
+	struct fd_dev *fd_dev = se_dev->se_dev_su_ptr;
 
 	if (!(fd_dev->fbd_flags & FBDF_HAS_PATH)) {
 		pr_err("Missing fd_dev_name=\n");
diff --git a/drivers/target/target_core_hba.c b/drivers/target/target_core_hba.c
index c68019d..3dd1bd4 100644
--- a/drivers/target/target_core_hba.c
+++ b/drivers/target/target_core_hba.c
@@ -37,11 +37,10 @@
 #include <net/tcp.h>
 
 #include <target/target_core_base.h>
-#include <target/target_core_device.h>
-#include <target/target_core_tpg.h>
-#include <target/target_core_transport.h>
+#include <target/target_core_backend.h>
+#include <target/target_core_fabric.h>
 
-#include "target_core_hba.h"
+#include "target_core_internal.h"
 
 static LIST_HEAD(subsystem_list);
 static DEFINE_MUTEX(subsystem_mutex);
diff --git a/drivers/target/target_core_hba.h b/drivers/target/target_core_hba.h
deleted file mode 100644
index bb0fea5..0000000
--- a/drivers/target/target_core_hba.h
+++ /dev/null
@@ -1,7 +0,0 @@
-#ifndef TARGET_CORE_HBA_H
-#define TARGET_CORE_HBA_H
-
-extern struct se_hba *core_alloc_hba(const char *, u32, u32);
-extern int core_delete_hba(struct se_hba *);
-
-#endif /* TARGET_CORE_HBA_H */
diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c
index 4aa9922..cc8e6b5 100644
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -42,8 +42,7 @@
 #include <scsi/scsi_host.h>
 
 #include <target/target_core_base.h>
-#include <target/target_core_device.h>
-#include <target/target_core_transport.h>
+#include <target/target_core_backend.h>
 
 #include "target_core_iblock.h"
 
@@ -391,7 +390,7 @@
 
 	orig = opts;
 
-	while ((ptr = strsep(&opts, ",")) != NULL) {
+	while ((ptr = strsep(&opts, ",\n")) != NULL) {
 		if (!*ptr)
 			continue;
 
@@ -465,7 +464,7 @@
 	if (bd) {
 		bl += sprintf(b + bl, "Major: %d Minor: %d  %s\n",
 			MAJOR(bd->bd_dev), MINOR(bd->bd_dev), (!bd->bd_contains) ?
-			"" : (bd->bd_holder == (struct iblock_dev *)ibd) ?
+			"" : (bd->bd_holder == ibd) ?
 			"CLAIMED: IBLOCK" : "CLAIMED: OS");
 	} else {
 		bl += sprintf(b + bl, "Major: 0 Minor: 0\n");
diff --git a/drivers/target/target_core_internal.h b/drivers/target/target_core_internal.h
new file mode 100644
index 0000000..26f135e
--- /dev/null
+++ b/drivers/target/target_core_internal.h
@@ -0,0 +1,123 @@
+#ifndef TARGET_CORE_INTERNAL_H
+#define TARGET_CORE_INTERNAL_H
+
+/* target_core_alua.c */
+extern struct t10_alua_lu_gp *default_lu_gp;
+
+/* target_core_cdb.c */
+int	target_emulate_inquiry(struct se_task *task);
+int	target_emulate_readcapacity(struct se_task *task);
+int	target_emulate_readcapacity_16(struct se_task *task);
+int	target_emulate_modesense(struct se_task *task);
+int	target_emulate_request_sense(struct se_task *task);
+int	target_emulate_unmap(struct se_task *task);
+int	target_emulate_write_same(struct se_task *task);
+int	target_emulate_synchronize_cache(struct se_task *task);
+int	target_emulate_noop(struct se_task *task);
+
+/* target_core_device.c */
+struct se_dev_entry *core_get_se_deve_from_rtpi(struct se_node_acl *, u16);
+int	core_free_device_list_for_node(struct se_node_acl *,
+		struct se_portal_group *);
+void	core_dec_lacl_count(struct se_node_acl *, struct se_cmd *);
+void	core_update_device_list_access(u32, u32, struct se_node_acl *);
+int	core_update_device_list_for_node(struct se_lun *, struct se_lun_acl *,
+		u32, u32, struct se_node_acl *, struct se_portal_group *, int);
+void	core_clear_lun_from_tpg(struct se_lun *, struct se_portal_group *);
+int	core_dev_export(struct se_device *, struct se_portal_group *,
+		struct se_lun *);
+void	core_dev_unexport(struct se_device *, struct se_portal_group *,
+		struct se_lun *);
+int	target_report_luns(struct se_task *);
+void	se_release_device_for_hba(struct se_device *);
+void	se_release_vpd_for_dev(struct se_device *);
+int	se_free_virtual_device(struct se_device *, struct se_hba *);
+int	se_dev_check_online(struct se_device *);
+int	se_dev_check_shutdown(struct se_device *);
+void	se_dev_set_default_attribs(struct se_device *, struct se_dev_limits *);
+int	se_dev_set_task_timeout(struct se_device *, u32);
+int	se_dev_set_max_unmap_lba_count(struct se_device *, u32);
+int	se_dev_set_max_unmap_block_desc_count(struct se_device *, u32);
+int	se_dev_set_unmap_granularity(struct se_device *, u32);
+int	se_dev_set_unmap_granularity_alignment(struct se_device *, u32);
+int	se_dev_set_emulate_dpo(struct se_device *, int);
+int	se_dev_set_emulate_fua_write(struct se_device *, int);
+int	se_dev_set_emulate_fua_read(struct se_device *, int);
+int	se_dev_set_emulate_write_cache(struct se_device *, int);
+int	se_dev_set_emulate_ua_intlck_ctrl(struct se_device *, int);
+int	se_dev_set_emulate_tas(struct se_device *, int);
+int	se_dev_set_emulate_tpu(struct se_device *, int);
+int	se_dev_set_emulate_tpws(struct se_device *, int);
+int	se_dev_set_enforce_pr_isids(struct se_device *, int);
+int	se_dev_set_is_nonrot(struct se_device *, int);
+int	se_dev_set_emulate_rest_reord(struct se_device *dev, int);
+int	se_dev_set_queue_depth(struct se_device *, u32);
+int	se_dev_set_max_sectors(struct se_device *, u32);
+int	se_dev_set_optimal_sectors(struct se_device *, u32);
+int	se_dev_set_block_size(struct se_device *, u32);
+struct se_lun *core_dev_add_lun(struct se_portal_group *, struct se_hba *,
+		struct se_device *, u32);
+int	core_dev_del_lun(struct se_portal_group *, u32);
+struct se_lun *core_get_lun_from_tpg(struct se_portal_group *, u32);
+struct se_lun_acl *core_dev_init_initiator_node_lun_acl(struct se_portal_group *,
+		u32, char *, int *);
+int	core_dev_add_initiator_node_lun_acl(struct se_portal_group *,
+		struct se_lun_acl *, u32, u32);
+int	core_dev_del_initiator_node_lun_acl(struct se_portal_group *,
+		struct se_lun *, struct se_lun_acl *);
+void	core_dev_free_initiator_node_lun_acl(struct se_portal_group *,
+		struct se_lun_acl *lacl);
+int	core_dev_setup_virtual_lun0(void);
+void	core_dev_release_virtual_lun0(void);
+
+/* target_core_hba.c */
+struct se_hba *core_alloc_hba(const char *, u32, u32);
+int	core_delete_hba(struct se_hba *);
+
+/* target_core_tmr.c */
+int	core_tmr_lun_reset(struct se_device *, struct se_tmr_req *,
+		struct list_head *, struct se_cmd *);
+
+/* target_core_tpg.c */
+extern struct se_device *g_lun0_dev;
+
+struct se_node_acl *__core_tpg_get_initiator_node_acl(struct se_portal_group *tpg,
+		const char *);
+struct se_node_acl *core_tpg_get_initiator_node_acl(struct se_portal_group *tpg,
+		unsigned char *);
+void	core_tpg_add_node_to_devs(struct se_node_acl *, struct se_portal_group *);
+void	core_tpg_wait_for_nacl_pr_ref(struct se_node_acl *);
+struct se_lun *core_tpg_pre_addlun(struct se_portal_group *, u32);
+int	core_tpg_post_addlun(struct se_portal_group *, struct se_lun *,
+		u32, void *);
+struct se_lun *core_tpg_pre_dellun(struct se_portal_group *, u32, int *);
+int	core_tpg_post_dellun(struct se_portal_group *, struct se_lun *);
+
+/* target_core_transport.c */
+extern struct kmem_cache *se_tmr_req_cache;
+
+int	init_se_kmem_caches(void);
+void	release_se_kmem_caches(void);
+u32	scsi_get_new_index(scsi_index_t);
+void	transport_subsystem_check_init(void);
+void	transport_cmd_finish_abort(struct se_cmd *, int);
+void	__transport_remove_task_from_execute_queue(struct se_task *,
+		struct se_device *);
+unsigned char *transport_dump_cmd_direction(struct se_cmd *);
+void	transport_dump_dev_state(struct se_device *, char *, int *);
+void	transport_dump_dev_info(struct se_device *, struct se_lun *,
+		unsigned long long, char *, int *);
+void	transport_dump_vpd_proto_id(struct t10_vpd *, unsigned char *, int);
+int	transport_dump_vpd_assoc(struct t10_vpd *, unsigned char *, int);
+int	transport_dump_vpd_ident_type(struct t10_vpd *, unsigned char *, int);
+int	transport_dump_vpd_ident(struct t10_vpd *, unsigned char *, int);
+bool	target_stop_task(struct se_task *task, unsigned long *flags);
+int	transport_clear_lun_from_sessions(struct se_lun *);
+void	transport_send_task_abort(struct se_cmd *);
+
+/* target_core_stat.c */
+void	target_stat_setup_dev_default_groups(struct se_subsystem_dev *);
+void	target_stat_setup_port_default_groups(struct se_lun *);
+void	target_stat_setup_mappedlun_default_groups(struct se_lun_acl *);
+
+#endif /* TARGET_CORE_INTERNAL_H */
diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c
index 95dee70..429ad72 100644
--- a/drivers/target/target_core_pr.c
+++ b/drivers/target/target_core_pr.c
@@ -33,14 +33,11 @@
 #include <asm/unaligned.h>
 
 #include <target/target_core_base.h>
-#include <target/target_core_device.h>
-#include <target/target_core_tmr.h>
-#include <target/target_core_tpg.h>
-#include <target/target_core_transport.h>
-#include <target/target_core_fabric_ops.h>
+#include <target/target_core_backend.h>
+#include <target/target_core_fabric.h>
 #include <target/target_core_configfs.h>
 
-#include "target_core_hba.h"
+#include "target_core_internal.h"
 #include "target_core_pr.h"
 #include "target_core_ua.h"
 
@@ -2984,21 +2981,6 @@
 	}
 }
 
-int core_scsi3_check_cdb_abort_and_preempt(
-	struct list_head *preempt_and_abort_list,
-	struct se_cmd *cmd)
-{
-	struct t10_pr_registration *pr_reg, *pr_reg_tmp;
-
-	list_for_each_entry_safe(pr_reg, pr_reg_tmp, preempt_and_abort_list,
-				pr_reg_abort_list) {
-		if (pr_reg->pr_res_key == cmd->pr_res_key)
-			return 0;
-	}
-
-	return 1;
-}
-
 static int core_scsi3_pro_preempt(
 	struct se_cmd *cmd,
 	int type,
diff --git a/drivers/target/target_core_pr.h b/drivers/target/target_core_pr.h
index b97f694..7a233fe 100644
--- a/drivers/target/target_core_pr.h
+++ b/drivers/target/target_core_pr.h
@@ -60,8 +60,6 @@
 					     struct se_node_acl *);
 extern void core_scsi3_free_all_registrations(struct se_device *);
 extern unsigned char *core_scsi3_pr_dump_type(int);
-extern int core_scsi3_check_cdb_abort_and_preempt(struct list_head *,
-						  struct se_cmd *);
 
 extern int target_scsi3_emulate_pr_in(struct se_task *task);
 extern int target_scsi3_emulate_pr_out(struct se_task *task);
diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c
index 8b15e56..d35467d 100644
--- a/drivers/target/target_core_pscsi.c
+++ b/drivers/target/target_core_pscsi.c
@@ -44,8 +44,7 @@
 #include <scsi/scsi_tcq.h>
 
 #include <target/target_core_base.h>
-#include <target/target_core_device.h>
-#include <target/target_core_transport.h>
+#include <target/target_core_backend.h>
 
 #include "target_core_pscsi.h"
 
@@ -105,7 +104,7 @@
 
 static int pscsi_pmode_enable_hba(struct se_hba *hba, unsigned long mode_flag)
 {
-	struct pscsi_hba_virt *phv = (struct pscsi_hba_virt *)hba->hba_ptr;
+	struct pscsi_hba_virt *phv = hba->hba_ptr;
 	struct Scsi_Host *sh = phv->phv_lld_host;
 	/*
 	 * Release the struct Scsi_Host
@@ -351,7 +350,6 @@
 	 * scsi_device_put() and the pdv->pdv_sd cleared.
 	 */
 	pdv->pdv_sd = sd;
-
 	dev = transport_add_device_to_core_hba(hba, &pscsi_template,
 				se_dev, dev_flags, pdv,
 				&dev_limits, NULL, NULL);
@@ -406,7 +404,7 @@
 	__releases(sh->host_lock)
 {
 	struct se_device *dev;
-	struct pscsi_hba_virt *phv = (struct pscsi_hba_virt *)pdv->pdv_se_hba->hba_ptr;
+	struct pscsi_hba_virt *phv = pdv->pdv_se_hba->hba_ptr;
 	struct Scsi_Host *sh = sd->host;
 	struct block_device *bd;
 	u32 dev_flags = 0;
@@ -454,7 +452,7 @@
 	__releases(sh->host_lock)
 {
 	struct se_device *dev;
-	struct pscsi_hba_virt *phv = (struct pscsi_hba_virt *)pdv->pdv_se_hba->hba_ptr;
+	struct pscsi_hba_virt *phv = pdv->pdv_se_hba->hba_ptr;
 	struct Scsi_Host *sh = sd->host;
 	u32 dev_flags = 0;
 
@@ -489,7 +487,7 @@
 	__releases(sh->host_lock)
 {
 	struct se_device *dev;
-	struct pscsi_hba_virt *phv = (struct pscsi_hba_virt *)pdv->pdv_se_hba->hba_ptr;
+	struct pscsi_hba_virt *phv = pdv->pdv_se_hba->hba_ptr;
 	struct Scsi_Host *sh = sd->host;
 	u32 dev_flags = 0;
 
@@ -510,10 +508,10 @@
 	struct se_subsystem_dev *se_dev,
 	void *p)
 {
-	struct pscsi_dev_virt *pdv = (struct pscsi_dev_virt *)p;
+	struct pscsi_dev_virt *pdv = p;
 	struct se_device *dev;
 	struct scsi_device *sd;
-	struct pscsi_hba_virt *phv = (struct pscsi_hba_virt *)hba->hba_ptr;
+	struct pscsi_hba_virt *phv = hba->hba_ptr;
 	struct Scsi_Host *sh = phv->phv_lld_host;
 	int legacy_mode_enable = 0;
 
@@ -818,7 +816,7 @@
 
 	orig = opts;
 
-	while ((ptr = strsep(&opts, ",")) != NULL) {
+	while ((ptr = strsep(&opts, ",\n")) != NULL) {
 		if (!*ptr)
 			continue;
 
@@ -1144,7 +1142,7 @@
 {
 	struct pscsi_plugin_task *pt = PSCSI_TASK(task);
 
-	return (unsigned char *)&pt->pscsi_sense[0];
+	return pt->pscsi_sense;
 }
 
 /*	pscsi_get_device_rev():
diff --git a/drivers/target/target_core_rd.c b/drivers/target/target_core_rd.c
index 02e51fa..8b68f7b 100644
--- a/drivers/target/target_core_rd.c
+++ b/drivers/target/target_core_rd.c
@@ -37,9 +37,7 @@
 #include <scsi/scsi_host.h>
 
 #include <target/target_core_base.h>
-#include <target/target_core_device.h>
-#include <target/target_core_transport.h>
-#include <target/target_core_fabric_ops.h>
+#include <target/target_core_backend.h>
 
 #include "target_core_rd.h"
 
@@ -474,7 +472,7 @@
 
 	orig = opts;
 
-	while ((ptr = strsep(&opts, ",")) != NULL) {
+	while ((ptr = strsep(&opts, ",\n")) != NULL) {
 		if (!*ptr)
 			continue;
 
diff --git a/drivers/target/target_core_stat.c b/drivers/target/target_core_stat.c
index 874152a..f8c2d2c 100644
--- a/drivers/target/target_core_stat.c
+++ b/drivers/target/target_core_stat.c
@@ -43,12 +43,12 @@
 #include <scsi/scsi_host.h>
 
 #include <target/target_core_base.h>
-#include <target/target_core_transport.h>
-#include <target/target_core_fabric_ops.h>
+#include <target/target_core_backend.h>
+#include <target/target_core_fabric.h>
 #include <target/target_core_configfs.h>
 #include <target/configfs_macros.h>
 
-#include "target_core_hba.h"
+#include "target_core_internal.h"
 
 #ifndef INITIAL_JIFFIES
 #define INITIAL_JIFFIES ((unsigned long)(unsigned int) (-300*HZ))
@@ -1755,8 +1755,7 @@
 	/* scsiAttIntrPortName+scsiAttIntrPortIdentifier */
 	memset(buf, 0, 64);
 	if (tpg->se_tpg_tfo->sess_get_initiator_sid != NULL)
-		tpg->se_tpg_tfo->sess_get_initiator_sid(se_sess,
-				(unsigned char *)&buf[0], 64);
+		tpg->se_tpg_tfo->sess_get_initiator_sid(se_sess, buf, 64);
 
 	ret = snprintf(page, PAGE_SIZE, "%s+i+%s\n", nacl->initiatorname, buf);
 	spin_unlock_irq(&nacl->nacl_sess_lock);
diff --git a/drivers/target/target_core_stat.h b/drivers/target/target_core_stat.h
deleted file mode 100644
index 86c252f..0000000
--- a/drivers/target/target_core_stat.h
+++ /dev/null
@@ -1,8 +0,0 @@
-#ifndef TARGET_CORE_STAT_H
-#define TARGET_CORE_STAT_H
-
-extern void target_stat_setup_dev_default_groups(struct se_subsystem_dev *);
-extern void target_stat_setup_port_default_groups(struct se_lun *);
-extern void target_stat_setup_mappedlun_default_groups(struct se_lun_acl *);
-
-#endif   /*** TARGET_CORE_STAT_H ***/
diff --git a/drivers/target/target_core_tmr.c b/drivers/target/target_core_tmr.c
index 6845228..dcb0618 100644
--- a/drivers/target/target_core_tmr.c
+++ b/drivers/target/target_core_tmr.c
@@ -32,12 +32,11 @@
 #include <scsi/scsi_cmnd.h>
 
 #include <target/target_core_base.h>
-#include <target/target_core_device.h>
-#include <target/target_core_tmr.h>
-#include <target/target_core_transport.h>
-#include <target/target_core_fabric_ops.h>
+#include <target/target_core_backend.h>
+#include <target/target_core_fabric.h>
 #include <target/target_core_configfs.h>
 
+#include "target_core_internal.h"
 #include "target_core_alua.h"
 #include "target_core_pr.h"
 
@@ -101,6 +100,21 @@
 	transport_cmd_finish_abort(cmd, 0);
 }
 
+static int target_check_cdb_and_preempt(struct list_head *list,
+		struct se_cmd *cmd)
+{
+	struct t10_pr_registration *reg;
+
+	if (!list)
+		return 0;
+	list_for_each_entry(reg, list, pr_reg_abort_list) {
+		if (reg->pr_res_key == cmd->pr_res_key)
+			return 0;
+	}
+
+	return 1;
+}
+
 static void core_tmr_drain_tmr_list(
 	struct se_device *dev,
 	struct se_tmr_req *tmr,
@@ -132,9 +146,7 @@
 		 * parameter (eg: for PROUT PREEMPT_AND_ABORT service action
 		 * skip non regisration key matching TMRs.
 		 */
-		if (preempt_and_abort_list &&
-		    (core_scsi3_check_cdb_abort_and_preempt(
-					preempt_and_abort_list, cmd) != 0))
+		if (target_check_cdb_and_preempt(preempt_and_abort_list, cmd))
 			continue;
 
 		spin_lock(&cmd->t_state_lock);
@@ -211,9 +223,7 @@
 		 * For PREEMPT_AND_ABORT usage, only process commands
 		 * with a matching reservation key.
 		 */
-		if (preempt_and_abort_list &&
-		    (core_scsi3_check_cdb_abort_and_preempt(
-					preempt_and_abort_list, cmd) != 0))
+		if (target_check_cdb_and_preempt(preempt_and_abort_list, cmd))
 			continue;
 		/*
 		 * Not aborting PROUT PREEMPT_AND_ABORT CDB..
@@ -222,7 +232,7 @@
 			continue;
 
 		list_move_tail(&task->t_state_list, &drain_task_list);
-		atomic_set(&task->task_state_active, 0);
+		task->t_state_active = false;
 		/*
 		 * Remove from task execute list before processing drain_task_list
 		 */
@@ -321,9 +331,7 @@
 		 * For PREEMPT_AND_ABORT usage, only process commands
 		 * with a matching reservation key.
 		 */
-		if (preempt_and_abort_list &&
-		    (core_scsi3_check_cdb_abort_and_preempt(
-					preempt_and_abort_list, cmd) != 0))
+		if (target_check_cdb_and_preempt(preempt_and_abort_list, cmd))
 			continue;
 		/*
 		 * Not aborting PROUT PREEMPT_AND_ABORT CDB..
diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c
index 8ddd133..b766802 100644
--- a/drivers/target/target_core_tpg.c
+++ b/drivers/target/target_core_tpg.c
@@ -39,13 +39,10 @@
 #include <scsi/scsi_cmnd.h>
 
 #include <target/target_core_base.h>
-#include <target/target_core_device.h>
-#include <target/target_core_tpg.h>
-#include <target/target_core_transport.h>
-#include <target/target_core_fabric_ops.h>
+#include <target/target_core_backend.h>
+#include <target/target_core_fabric.h>
 
-#include "target_core_hba.h"
-#include "target_core_stat.h"
+#include "target_core_internal.h"
 
 extern struct se_device *g_lun0_dev;
 
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 0257658..d3ddd13 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -45,16 +45,12 @@
 #include <scsi/scsi_tcq.h>
 
 #include <target/target_core_base.h>
-#include <target/target_core_device.h>
-#include <target/target_core_tmr.h>
-#include <target/target_core_tpg.h>
-#include <target/target_core_transport.h>
-#include <target/target_core_fabric_ops.h>
+#include <target/target_core_backend.h>
+#include <target/target_core_fabric.h>
 #include <target/target_core_configfs.h>
 
+#include "target_core_internal.h"
 #include "target_core_alua.h"
-#include "target_core_cdb.h"
-#include "target_core_hba.h"
 #include "target_core_pr.h"
 #include "target_core_ua.h"
 
@@ -72,7 +68,7 @@
 
 static int transport_generic_write_pending(struct se_cmd *);
 static int transport_processing_thread(void *param);
-static int __transport_execute_tasks(struct se_device *dev);
+static int __transport_execute_tasks(struct se_device *dev, struct se_cmd *);
 static void transport_complete_task_attr(struct se_cmd *cmd);
 static void transport_handle_queue_full(struct se_cmd *cmd,
 		struct se_device *dev);
@@ -212,14 +208,13 @@
 	return new_index;
 }
 
-void transport_init_queue_obj(struct se_queue_obj *qobj)
+static void transport_init_queue_obj(struct se_queue_obj *qobj)
 {
 	atomic_set(&qobj->queue_cnt, 0);
 	INIT_LIST_HEAD(&qobj->qobj_list);
 	init_waitqueue_head(&qobj->thread_wq);
 	spin_lock_init(&qobj->cmd_queue_lock);
 }
-EXPORT_SYMBOL(transport_init_queue_obj);
 
 void transport_subsystem_check_init(void)
 {
@@ -426,18 +421,18 @@
 		if (task->task_flags & TF_ACTIVE)
 			continue;
 
-		if (!atomic_read(&task->task_state_active))
-			continue;
-
 		spin_lock_irqsave(&dev->execute_task_lock, flags);
-		list_del(&task->t_state_list);
-		pr_debug("Removed ITT: 0x%08x dev: %p task[%p]\n",
-			cmd->se_tfo->get_task_tag(cmd), dev, task);
-		spin_unlock_irqrestore(&dev->execute_task_lock, flags);
+		if (task->t_state_active) {
+			pr_debug("Removed ITT: 0x%08x dev: %p task[%p]\n",
+				cmd->se_tfo->get_task_tag(cmd), dev, task);
 
-		atomic_set(&task->task_state_active, 0);
-		atomic_dec(&cmd->t_task_cdbs_ex_left);
+			list_del(&task->t_state_list);
+			atomic_dec(&cmd->t_task_cdbs_ex_left);
+			task->t_state_active = false;
+		}
+		spin_unlock_irqrestore(&dev->execute_task_lock, flags);
 	}
+
 }
 
 /*	transport_cmd_check_stop():
@@ -696,12 +691,6 @@
 	struct se_cmd *cmd = task->task_se_cmd;
 	struct se_device *dev = cmd->se_dev;
 	unsigned long flags;
-#if 0
-	pr_debug("task: %p CDB: 0x%02x obj_ptr: %p\n", task,
-			cmd->t_task_cdb[0], dev);
-#endif
-	if (dev)
-		atomic_inc(&dev->depth_left);
 
 	spin_lock_irqsave(&cmd->t_state_lock, flags);
 	task->task_flags &= ~TF_ACTIVE;
@@ -714,7 +703,7 @@
 	if (dev && dev->transport->transport_complete) {
 		if (dev->transport->transport_complete(task) != 0) {
 			cmd->se_cmd_flags |= SCF_TRANSPORT_TASK_SENSE;
-			task->task_sense = 1;
+			task->task_flags |= TF_HAS_SENSE;
 			success = 1;
 		}
 	}
@@ -743,13 +732,7 @@
 	}
 
 	if (cmd->t_tasks_failed) {
-		if (!task->task_error_status) {
-			task->task_error_status =
-				TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
-			cmd->scsi_sense_reason =
-				TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
-		}
-
+		cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
 		INIT_WORK(&cmd->work, target_complete_failure_work);
 	} else {
 		atomic_set(&cmd->t_transport_complete, 1);
@@ -824,7 +807,7 @@
 	head_of_queue = transport_add_task_check_sam_attr(task, task_prev, dev);
 	atomic_inc(&dev->execute_tasks);
 
-	if (atomic_read(&task->task_state_active))
+	if (task->t_state_active)
 		return;
 	/*
 	 * Determine if this task needs to go to HEAD_OF_QUEUE for the
@@ -838,7 +821,7 @@
 	else
 		list_add_tail(&task->t_state_list, &dev->state_task_list);
 
-	atomic_set(&task->task_state_active, 1);
+	task->t_state_active = true;
 
 	pr_debug("Added ITT: 0x%08x task[%p] to dev: %p\n",
 		task->task_se_cmd->se_tfo->get_task_tag(task->task_se_cmd),
@@ -853,29 +836,26 @@
 
 	spin_lock_irqsave(&cmd->t_state_lock, flags);
 	list_for_each_entry(task, &cmd->t_task_list, t_list) {
-		if (atomic_read(&task->task_state_active))
-			continue;
-
 		spin_lock(&dev->execute_task_lock);
-		list_add_tail(&task->t_state_list, &dev->state_task_list);
-		atomic_set(&task->task_state_active, 1);
+		if (!task->t_state_active) {
+			list_add_tail(&task->t_state_list,
+				      &dev->state_task_list);
+			task->t_state_active = true;
 
-		pr_debug("Added ITT: 0x%08x task[%p] to dev: %p\n",
-			task->task_se_cmd->se_tfo->get_task_tag(
-			task->task_se_cmd), task, dev);
-
+			pr_debug("Added ITT: 0x%08x task[%p] to dev: %p\n",
+				task->task_se_cmd->se_tfo->get_task_tag(
+				task->task_se_cmd), task, dev);
+		}
 		spin_unlock(&dev->execute_task_lock);
 	}
 	spin_unlock_irqrestore(&cmd->t_state_lock, flags);
 }
 
-static void transport_add_tasks_from_cmd(struct se_cmd *cmd)
+static void __transport_add_tasks_from_cmd(struct se_cmd *cmd)
 {
 	struct se_device *dev = cmd->se_dev;
 	struct se_task *task, *task_prev = NULL;
-	unsigned long flags;
 
-	spin_lock_irqsave(&dev->execute_task_lock, flags);
 	list_for_each_entry(task, &cmd->t_task_list, t_list) {
 		if (!list_empty(&task->t_execute_list))
 			continue;
@@ -886,6 +866,15 @@
 		__transport_add_task_to_execute_queue(task, task_prev, dev);
 		task_prev = task;
 	}
+}
+
+static void transport_add_tasks_from_cmd(struct se_cmd *cmd)
+{
+	unsigned long flags;
+	struct se_device *dev = cmd->se_dev;
+
+	spin_lock_irqsave(&dev->execute_task_lock, flags);
+	__transport_add_tasks_from_cmd(cmd);
 	spin_unlock_irqrestore(&dev->execute_task_lock, flags);
 }
 
@@ -896,7 +885,7 @@
 	atomic_dec(&dev->execute_tasks);
 }
 
-void transport_remove_task_from_execute_queue(
+static void transport_remove_task_from_execute_queue(
 	struct se_task *task,
 	struct se_device *dev)
 {
@@ -983,9 +972,8 @@
 		break;
 	}
 
-	*bl += sprintf(b + *bl, "  Execute/Left/Max Queue Depth: %d/%d/%d",
-		atomic_read(&dev->execute_tasks), atomic_read(&dev->depth_left),
-		dev->queue_depth);
+	*bl += sprintf(b + *bl, "  Execute/Max Queue Depth: %d/%d",
+		atomic_read(&dev->execute_tasks), dev->queue_depth);
 	*bl += sprintf(b + *bl, "  SectorSize: %u  MaxSectors: %u\n",
 		dev->se_sub_dev->se_dev_attrib.block_size, dev->se_sub_dev->se_dev_attrib.max_sectors);
 	*bl += sprintf(b + *bl, "        ");
@@ -1340,9 +1328,6 @@
 	spin_lock_init(&dev->se_port_lock);
 	spin_lock_init(&dev->se_tmr_lock);
 	spin_lock_init(&dev->qf_cmd_lock);
-
-	dev->queue_depth	= dev_limits->queue_depth;
-	atomic_set(&dev->depth_left, dev->queue_depth);
 	atomic_set(&dev->dev_ordered_id, 0);
 
 	se_dev_set_default_attribs(dev, dev_limits);
@@ -1654,6 +1639,80 @@
 }
 EXPORT_SYMBOL(transport_handle_cdb_direct);
 
+/**
+ * target_submit_cmd - lookup unpacked lun and submit uninitialized se_cmd
+ *
+ * @se_cmd: command descriptor to submit
+ * @se_sess: associated se_sess for endpoint
+ * @cdb: pointer to SCSI CDB
+ * @sense: pointer to SCSI sense buffer
+ * @unpacked_lun: unpacked LUN to reference for struct se_lun
+ * @data_length: fabric expected data transfer length
+ * @task_addr: SAM task attribute
+ * @data_dir: DMA data direction
+ * @flags: flags for command submission from target_sc_flags_tables
+ *
+ * This may only be called from process context, and also currently
+ * assumes internal allocation of fabric payload buffer by target-core.
+ **/
+int target_submit_cmd(struct se_cmd *se_cmd, struct se_session *se_sess,
+		unsigned char *cdb, unsigned char *sense, u32 unpacked_lun,
+		u32 data_length, int task_attr, int data_dir, int flags)
+{
+	struct se_portal_group *se_tpg;
+	int rc;
+
+	se_tpg = se_sess->se_tpg;
+	BUG_ON(!se_tpg);
+	BUG_ON(se_cmd->se_tfo || se_cmd->se_sess);
+	BUG_ON(in_interrupt());
+	/*
+	 * Initialize se_cmd for target operation.  From this point
+	 * exceptions are handled by sending exception status via
+	 * target_core_fabric_ops->queue_status() callback
+	 */
+	transport_init_se_cmd(se_cmd, se_tpg->se_tpg_tfo, se_sess,
+				data_length, data_dir, task_attr, sense);
+	/*
+	 * Obtain struct se_cmd->cmd_kref reference and add new cmd to
+	 * se_sess->sess_cmd_list.  A second kref_get here is necessary
+	 * for fabrics using TARGET_SCF_ACK_KREF that expect a second
+	 * kref_put() to happen during fabric packet acknowledgement.
+	 */
+	target_get_sess_cmd(se_sess, se_cmd, (flags & TARGET_SCF_ACK_KREF));
+	/*
+	 * Signal bidirectional data payloads to target-core
+	 */
+	if (flags & TARGET_SCF_BIDI_OP)
+		se_cmd->se_cmd_flags |= SCF_BIDI;
+	/*
+	 * Locate se_lun pointer and attach it to struct se_cmd
+	 */
+	if (transport_lookup_cmd_lun(se_cmd, unpacked_lun) < 0)
+		goto out_check_cond;
+	/*
+	 * Sanitize CDBs via transport_generic_cmd_sequencer() and
+	 * allocate the necessary tasks to complete the received CDB+data
+	 */
+	rc = transport_generic_allocate_tasks(se_cmd, cdb);
+	if (rc != 0)
+		goto out_check_cond;
+	/*
+	 * Dispatch se_cmd descriptor to se_lun->lun_se_dev backend
+	 * for immediate execution of READs, otherwise wait for
+	 * transport_generic_handle_data() to be called for WRITEs
+	 * when fabric has filled the incoming buffer.
+	 */
+	transport_handle_cdb_direct(se_cmd);
+	return 0;
+
+out_check_cond:
+	transport_send_check_condition_and_sense(se_cmd,
+				se_cmd->scsi_sense_reason, 0);
+	return 0;
+}
+EXPORT_SYMBOL(target_submit_cmd);
+
 /*
  * Used by fabric module frontends defining a TFO->new_cmd_map() caller
  * to  queue up a newly setup se_cmd w/ TRANSPORT_NEW_CMD_MAP in order to
@@ -1920,18 +1979,6 @@
 	spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
 }
 
-static inline int transport_tcq_window_closed(struct se_device *dev)
-{
-	if (dev->dev_tcq_window_closed++ <
-			PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD) {
-		msleep(PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT);
-	} else
-		msleep(PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG);
-
-	wake_up_interruptible(&dev->dev_queue_obj.thread_wq);
-	return 0;
-}
-
 /*
  * Called from Fabric Module context from transport_execute_tasks()
  *
@@ -2014,13 +2061,7 @@
 static int transport_execute_tasks(struct se_cmd *cmd)
 {
 	int add_tasks;
-
-	if (se_dev_check_online(cmd->se_dev) != 0) {
-		cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
-		transport_generic_request_failure(cmd);
-		return 0;
-	}
-
+	struct se_device *se_dev = cmd->se_dev;
 	/*
 	 * Call transport_cmd_check_stop() to see if a fabric exception
 	 * has occurred that prevents execution.
@@ -2034,19 +2075,16 @@
 		if (!add_tasks)
 			goto execute_tasks;
 		/*
-		 * This calls transport_add_tasks_from_cmd() to handle
-		 * HEAD_OF_QUEUE ordering for SAM Task Attribute emulation
-		 * (if enabled) in __transport_add_task_to_execute_queue() and
-		 * transport_add_task_check_sam_attr().
+		 * __transport_execute_tasks() -> __transport_add_tasks_from_cmd()
+		 * adds associated se_tasks while holding dev->execute_task_lock
+		 * before I/O dispath to avoid a double spinlock access.
 		 */
-		transport_add_tasks_from_cmd(cmd);
+		__transport_execute_tasks(se_dev, cmd);
+		return 0;
 	}
-	/*
-	 * Kick the execution queue for the cmd associated struct se_device
-	 * storage object.
-	 */
+
 execute_tasks:
-	__transport_execute_tasks(cmd->se_dev);
+	__transport_execute_tasks(se_dev, NULL);
 	return 0;
 }
 
@@ -2056,24 +2094,18 @@
  *
  * Called from transport_processing_thread()
  */
-static int __transport_execute_tasks(struct se_device *dev)
+static int __transport_execute_tasks(struct se_device *dev, struct se_cmd *new_cmd)
 {
 	int error;
 	struct se_cmd *cmd = NULL;
 	struct se_task *task = NULL;
 	unsigned long flags;
 
-	/*
-	 * Check if there is enough room in the device and HBA queue to send
-	 * struct se_tasks to the selected transport.
-	 */
 check_depth:
-	if (!atomic_read(&dev->depth_left))
-		return transport_tcq_window_closed(dev);
-
-	dev->dev_tcq_window_closed = 0;
-
 	spin_lock_irq(&dev->execute_task_lock);
+	if (new_cmd != NULL)
+		__transport_add_tasks_from_cmd(new_cmd);
+
 	if (list_empty(&dev->execute_task_list)) {
 		spin_unlock_irq(&dev->execute_task_lock);
 		return 0;
@@ -2083,10 +2115,7 @@
 	__transport_remove_task_from_execute_queue(task, dev);
 	spin_unlock_irq(&dev->execute_task_lock);
 
-	atomic_dec(&dev->depth_left);
-
 	cmd = task->task_se_cmd;
-
 	spin_lock_irqsave(&cmd->t_state_lock, flags);
 	task->task_flags |= (TF_ACTIVE | TF_SENT);
 	atomic_inc(&cmd->t_task_cdbs_sent);
@@ -2107,10 +2136,10 @@
 		spin_unlock_irqrestore(&cmd->t_state_lock, flags);
 		atomic_set(&cmd->t_transport_sent, 0);
 		transport_stop_tasks_for_cmd(cmd);
-		atomic_inc(&dev->depth_left);
 		transport_generic_request_failure(cmd);
 	}
 
+	new_cmd = NULL;
 	goto check_depth;
 
 	return 0;
@@ -2351,7 +2380,7 @@
 
 	list_for_each_entry_safe(task, task_tmp,
 				&cmd->t_task_list, t_list) {
-		if (!task->task_sense)
+		if (!(task->task_flags & TF_HAS_SENSE))
 			continue;
 
 		if (!dev->transport->get_sense_buffer) {
@@ -3346,6 +3375,32 @@
 }
 
 /**
+ * transport_release_cmd - free a command
+ * @cmd:       command to free
+ *
+ * This routine unconditionally frees a command, and reference counting
+ * or list removal must be done in the caller.
+ */
+static void transport_release_cmd(struct se_cmd *cmd)
+{
+	BUG_ON(!cmd->se_tfo);
+
+	if (cmd->se_tmr_req)
+		core_tmr_release_req(cmd->se_tmr_req);
+	if (cmd->t_task_cdb != cmd->__t_task_cdb)
+		kfree(cmd->t_task_cdb);
+	/*
+	 * If this cmd has been setup with target_get_sess_cmd(), drop
+	 * the kref and call ->release_cmd() in kref callback.
+	 */
+	 if (cmd->check_release != 0) {
+		target_put_sess_cmd(cmd->se_sess, cmd);
+		return;
+	}
+	cmd->se_tfo->release_cmd(cmd);
+}
+
+/**
  * transport_put_cmd - release a reference to a command
  * @cmd:       command to release
  *
@@ -3870,33 +3925,6 @@
 	return 0;
 }
 
-/**
- * transport_release_cmd - free a command
- * @cmd:       command to free
- *
- * This routine unconditionally frees a command, and reference counting
- * or list removal must be done in the caller.
- */
-void transport_release_cmd(struct se_cmd *cmd)
-{
-	BUG_ON(!cmd->se_tfo);
-
-	if (cmd->se_tmr_req)
-		core_tmr_release_req(cmd->se_tmr_req);
-	if (cmd->t_task_cdb != cmd->__t_task_cdb)
-		kfree(cmd->t_task_cdb);
-	/*
-	 * Check if target_wait_for_sess_cmds() is expecting to
-	 * release se_cmd directly here..
-	 */
-	if (cmd->check_release != 0 && cmd->se_tfo->check_release_cmd)
-		if (cmd->se_tfo->check_release_cmd(cmd) != 0)
-			return;
-
-	cmd->se_tfo->release_cmd(cmd);
-}
-EXPORT_SYMBOL(transport_release_cmd);
-
 void transport_generic_free_cmd(struct se_cmd *cmd, int wait_for_tasks)
 {
 	if (!(cmd->se_cmd_flags & SCF_SE_LUN_CMD)) {
@@ -3923,11 +3951,22 @@
 /* target_get_sess_cmd - Add command to active ->sess_cmd_list
  * @se_sess:	session to reference
  * @se_cmd:	command descriptor to add
+ * @ack_kref:	Signal that fabric will perform an ack target_put_sess_cmd()
  */
-void target_get_sess_cmd(struct se_session *se_sess, struct se_cmd *se_cmd)
+void target_get_sess_cmd(struct se_session *se_sess, struct se_cmd *se_cmd,
+			bool ack_kref)
 {
 	unsigned long flags;
 
+	kref_init(&se_cmd->cmd_kref);
+	/*
+	 * Add a second kref if the fabric caller is expecting to handle
+	 * fabric acknowledgement that requires two target_put_sess_cmd()
+	 * invocations before se_cmd descriptor release.
+	 */
+	if (ack_kref == true)
+		kref_get(&se_cmd->cmd_kref);
+
 	spin_lock_irqsave(&se_sess->sess_cmd_lock, flags);
 	list_add_tail(&se_cmd->se_cmd_list, &se_sess->sess_cmd_list);
 	se_cmd->check_release = 1;
@@ -3935,30 +3974,36 @@
 }
 EXPORT_SYMBOL(target_get_sess_cmd);
 
-/* target_put_sess_cmd - Check for active I/O shutdown or list delete
- * @se_sess: 	session to reference
- * @se_cmd:	command descriptor to drop
- */
-int target_put_sess_cmd(struct se_session *se_sess, struct se_cmd *se_cmd)
+static void target_release_cmd_kref(struct kref *kref)
 {
+	struct se_cmd *se_cmd = container_of(kref, struct se_cmd, cmd_kref);
+	struct se_session *se_sess = se_cmd->se_sess;
 	unsigned long flags;
 
 	spin_lock_irqsave(&se_sess->sess_cmd_lock, flags);
 	if (list_empty(&se_cmd->se_cmd_list)) {
 		spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags);
 		WARN_ON(1);
-		return 0;
+		return;
 	}
-
 	if (se_sess->sess_tearing_down && se_cmd->cmd_wait_set) {
 		spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags);
 		complete(&se_cmd->cmd_wait_comp);
-		return 1;
+		return;
 	}
 	list_del(&se_cmd->se_cmd_list);
 	spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags);
 
-	return 0;
+	se_cmd->se_tfo->release_cmd(se_cmd);
+}
+
+/* target_put_sess_cmd - Check for active I/O shutdown via kref_put
+ * @se_sess:	session to reference
+ * @se_cmd:	command descriptor to drop
+ */
+int target_put_sess_cmd(struct se_session *se_sess, struct se_cmd *se_cmd)
+{
+	return kref_put(&se_cmd->cmd_kref, target_release_cmd_kref);
 }
 EXPORT_SYMBOL(target_put_sess_cmd);
 
@@ -4174,7 +4219,7 @@
 
 static int transport_clear_lun_thread(void *p)
 {
-	struct se_lun *lun = (struct se_lun *)p;
+	struct se_lun *lun = p;
 
 	__transport_clear_lun_from_sessions(lun);
 	complete(&lun->lun_shutdown_comp);
@@ -4353,6 +4398,7 @@
 	case TCM_NON_EXISTENT_LUN:
 		/* CURRENT ERROR */
 		buffer[offset] = 0x70;
+		buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
 		/* ILLEGAL REQUEST */
 		buffer[offset+SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST;
 		/* LOGICAL UNIT NOT SUPPORTED */
@@ -4362,6 +4408,7 @@
 	case TCM_SECTOR_COUNT_TOO_MANY:
 		/* CURRENT ERROR */
 		buffer[offset] = 0x70;
+		buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
 		/* ILLEGAL REQUEST */
 		buffer[offset+SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST;
 		/* INVALID COMMAND OPERATION CODE */
@@ -4370,6 +4417,7 @@
 	case TCM_UNKNOWN_MODE_PAGE:
 		/* CURRENT ERROR */
 		buffer[offset] = 0x70;
+		buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
 		/* ILLEGAL REQUEST */
 		buffer[offset+SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST;
 		/* INVALID FIELD IN CDB */
@@ -4378,6 +4426,7 @@
 	case TCM_CHECK_CONDITION_ABORT_CMD:
 		/* CURRENT ERROR */
 		buffer[offset] = 0x70;
+		buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
 		/* ABORTED COMMAND */
 		buffer[offset+SPC_SENSE_KEY_OFFSET] = ABORTED_COMMAND;
 		/* BUS DEVICE RESET FUNCTION OCCURRED */
@@ -4387,6 +4436,7 @@
 	case TCM_INCORRECT_AMOUNT_OF_DATA:
 		/* CURRENT ERROR */
 		buffer[offset] = 0x70;
+		buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
 		/* ABORTED COMMAND */
 		buffer[offset+SPC_SENSE_KEY_OFFSET] = ABORTED_COMMAND;
 		/* WRITE ERROR */
@@ -4397,6 +4447,7 @@
 	case TCM_INVALID_CDB_FIELD:
 		/* CURRENT ERROR */
 		buffer[offset] = 0x70;
+		buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
 		/* ABORTED COMMAND */
 		buffer[offset+SPC_SENSE_KEY_OFFSET] = ABORTED_COMMAND;
 		/* INVALID FIELD IN CDB */
@@ -4405,6 +4456,7 @@
 	case TCM_INVALID_PARAMETER_LIST:
 		/* CURRENT ERROR */
 		buffer[offset] = 0x70;
+		buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
 		/* ABORTED COMMAND */
 		buffer[offset+SPC_SENSE_KEY_OFFSET] = ABORTED_COMMAND;
 		/* INVALID FIELD IN PARAMETER LIST */
@@ -4413,6 +4465,7 @@
 	case TCM_UNEXPECTED_UNSOLICITED_DATA:
 		/* CURRENT ERROR */
 		buffer[offset] = 0x70;
+		buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
 		/* ABORTED COMMAND */
 		buffer[offset+SPC_SENSE_KEY_OFFSET] = ABORTED_COMMAND;
 		/* WRITE ERROR */
@@ -4423,6 +4476,7 @@
 	case TCM_SERVICE_CRC_ERROR:
 		/* CURRENT ERROR */
 		buffer[offset] = 0x70;
+		buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
 		/* ABORTED COMMAND */
 		buffer[offset+SPC_SENSE_KEY_OFFSET] = ABORTED_COMMAND;
 		/* PROTOCOL SERVICE CRC ERROR */
@@ -4433,6 +4487,7 @@
 	case TCM_SNACK_REJECTED:
 		/* CURRENT ERROR */
 		buffer[offset] = 0x70;
+		buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
 		/* ABORTED COMMAND */
 		buffer[offset+SPC_SENSE_KEY_OFFSET] = ABORTED_COMMAND;
 		/* READ ERROR */
@@ -4443,6 +4498,7 @@
 	case TCM_WRITE_PROTECTED:
 		/* CURRENT ERROR */
 		buffer[offset] = 0x70;
+		buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
 		/* DATA PROTECT */
 		buffer[offset+SPC_SENSE_KEY_OFFSET] = DATA_PROTECT;
 		/* WRITE PROTECTED */
@@ -4451,6 +4507,7 @@
 	case TCM_CHECK_CONDITION_UNIT_ATTENTION:
 		/* CURRENT ERROR */
 		buffer[offset] = 0x70;
+		buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
 		/* UNIT ATTENTION */
 		buffer[offset+SPC_SENSE_KEY_OFFSET] = UNIT_ATTENTION;
 		core_scsi3_ua_for_check_condition(cmd, &asc, &ascq);
@@ -4460,6 +4517,7 @@
 	case TCM_CHECK_CONDITION_NOT_READY:
 		/* CURRENT ERROR */
 		buffer[offset] = 0x70;
+		buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
 		/* Not Ready */
 		buffer[offset+SPC_SENSE_KEY_OFFSET] = NOT_READY;
 		transport_get_sense_codes(cmd, &asc, &ascq);
@@ -4470,6 +4528,7 @@
 	default:
 		/* CURRENT ERROR */
 		buffer[offset] = 0x70;
+		buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
 		/* ILLEGAL REQUEST */
 		buffer[offset+SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST;
 		/* LOGICAL UNIT COMMUNICATION FAILURE */
@@ -4545,11 +4604,7 @@
 	cmd->se_tfo->queue_status(cmd);
 }
 
-/*	transport_generic_do_tmr():
- *
- *
- */
-int transport_generic_do_tmr(struct se_cmd *cmd)
+static int transport_generic_do_tmr(struct se_cmd *cmd)
 {
 	struct se_device *dev = cmd->se_dev;
 	struct se_tmr_req *tmr = cmd->se_tmr_req;
@@ -4597,7 +4652,7 @@
 {
 	int ret;
 	struct se_cmd *cmd;
-	struct se_device *dev = (struct se_device *) param;
+	struct se_device *dev = param;
 
 	while (!kthread_should_stop()) {
 		ret = wait_event_interruptible(dev->dev_queue_obj.thread_wq,
@@ -4607,8 +4662,6 @@
 			goto out;
 
 get_cmd:
-		__transport_execute_tasks(dev);
-
 		cmd = transport_get_cmd_from_queue(&dev->dev_queue_obj);
 		if (!cmd)
 			continue;
diff --git a/drivers/target/target_core_ua.c b/drivers/target/target_core_ua.c
index 50a480d..3e12f6b 100644
--- a/drivers/target/target_core_ua.c
+++ b/drivers/target/target_core_ua.c
@@ -30,13 +30,11 @@
 #include <scsi/scsi_cmnd.h>
 
 #include <target/target_core_base.h>
-#include <target/target_core_device.h>
-#include <target/target_core_transport.h>
-#include <target/target_core_fabric_ops.h>
+#include <target/target_core_fabric.h>
 #include <target/target_core_configfs.h>
 
+#include "target_core_internal.h"
 #include "target_core_alua.h"
-#include "target_core_hba.h"
 #include "target_core_pr.h"
 #include "target_core_ua.h"
 
diff --git a/drivers/target/tcm_fc/tfc_cmd.c b/drivers/target/tcm_fc/tfc_cmd.c
index 71fc9ce..addc18f 100644
--- a/drivers/target/tcm_fc/tfc_cmd.c
+++ b/drivers/target/tcm_fc/tfc_cmd.c
@@ -39,12 +39,8 @@
 #include <scsi/fc_encode.h>
 
 #include <target/target_core_base.h>
-#include <target/target_core_transport.h>
-#include <target/target_core_fabric_ops.h>
-#include <target/target_core_device.h>
-#include <target/target_core_tpg.h>
+#include <target/target_core_fabric.h>
 #include <target/target_core_configfs.h>
-#include <target/target_core_tmr.h>
 #include <target/configfs_macros.h>
 
 #include "tcm_fc.h"
@@ -367,6 +363,11 @@
 	struct ft_sess *sess;
 	u8 tm_func;
 
+	transport_init_se_cmd(&cmd->se_cmd, &ft_configfs->tf_ops,
+			cmd->sess->se_sess, 0, DMA_NONE, 0,
+			&cmd->ft_sense_buffer[0]);
+	target_get_sess_cmd(cmd->sess->se_sess, &cmd->se_cmd, false);
+
 	fcp = fc_frame_payload_get(cmd->req_frame, sizeof(*fcp));
 
 	switch (fcp->fc_tm_flags) {
@@ -420,7 +421,6 @@
 			sess = cmd->sess;
 			transport_send_check_condition_and_sense(&cmd->se_cmd,
 				cmd->se_cmd.scsi_sense_reason, 0);
-			transport_generic_free_cmd(&cmd->se_cmd, 0);
 			ft_sess_put(sess);
 			return;
 		}
@@ -536,7 +536,6 @@
 {
 	struct ft_cmd *cmd = container_of(work, struct ft_cmd, work);
 	struct fc_frame_header *fh = fc_frame_header_get(cmd->req_frame);
-	struct se_cmd *se_cmd;
 	struct fcp_cmnd *fcp;
 	int data_dir = 0;
 	u32 data_len;
@@ -591,15 +590,6 @@
 		data_len = ntohl(fcp->fc_dl);
 		cmd->cdb = fcp->fc_cdb;
 	}
-
-	se_cmd = &cmd->se_cmd;
-	/*
-	 * Initialize struct se_cmd descriptor from target_core_mod
-	 * infrastructure
-	 */
-	transport_init_se_cmd(se_cmd, &ft_configfs->tf_ops, cmd->sess->se_sess,
-			      data_len, data_dir, task_attr,
-			      &cmd->ft_sense_buffer[0]);
 	/*
 	 * Check for FCP task management flags
 	 */
@@ -607,39 +597,20 @@
 		ft_send_tm(cmd);
 		return;
 	}
-
 	fc_seq_exch(cmd->seq)->lp->tt.seq_set_resp(cmd->seq, ft_recv_seq, cmd);
-
 	cmd->lun = scsilun_to_int((struct scsi_lun *)fcp->fc_lun);
-	ret = transport_lookup_cmd_lun(&cmd->se_cmd, cmd->lun);
+	/*
+	 * Use a single se_cmd->cmd_kref as we expect to release se_cmd
+	 * directly from ft_check_stop_free callback in response path.
+	 */
+	ret = target_submit_cmd(&cmd->se_cmd, cmd->sess->se_sess, cmd->cdb,
+				&cmd->ft_sense_buffer[0], cmd->lun, data_len,
+				task_attr, data_dir, 0);
+	pr_debug("r_ctl %x alloc target_submit_cmd %d\n", fh->fh_r_ctl, ret);
 	if (ret < 0) {
 		ft_dump_cmd(cmd, __func__);
-		transport_send_check_condition_and_sense(&cmd->se_cmd,
-			cmd->se_cmd.scsi_sense_reason, 0);
 		return;
 	}
-
-	ret = transport_generic_allocate_tasks(se_cmd, cmd->cdb);
-
-	pr_debug("r_ctl %x alloc task ret %d\n", fh->fh_r_ctl, ret);
-	ft_dump_cmd(cmd, __func__);
-
-	if (ret == -ENOMEM) {
-		transport_send_check_condition_and_sense(se_cmd,
-				TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE, 0);
-		transport_generic_free_cmd(se_cmd, 0);
-		return;
-	}
-	if (ret == -EINVAL) {
-		if (se_cmd->se_cmd_flags & SCF_SCSI_RESERVATION_CONFLICT)
-			ft_queue_status(se_cmd);
-		else
-			transport_send_check_condition_and_sense(se_cmd,
-					se_cmd->scsi_sense_reason, 0);
-		transport_generic_free_cmd(se_cmd, 0);
-		return;
-	}
-	transport_handle_cdb_direct(se_cmd);
 	return;
 
 err:
diff --git a/drivers/target/tcm_fc/tfc_conf.c b/drivers/target/tcm_fc/tfc_conf.c
index 9402b73..73852fb 100644
--- a/drivers/target/tcm_fc/tfc_conf.c
+++ b/drivers/target/tcm_fc/tfc_conf.c
@@ -41,12 +41,8 @@
 #include <scsi/libfc.h>
 
 #include <target/target_core_base.h>
-#include <target/target_core_transport.h>
-#include <target/target_core_fabric_ops.h>
+#include <target/target_core_fabric.h>
 #include <target/target_core_fabric_configfs.h>
-#include <target/target_core_fabric_lib.h>
-#include <target/target_core_device.h>
-#include <target/target_core_tpg.h>
 #include <target/target_core_configfs.h>
 #include <target/configfs_macros.h>
 
diff --git a/drivers/target/tcm_fc/tfc_io.c b/drivers/target/tcm_fc/tfc_io.c
index 1369b1c..d8cabc2 100644
--- a/drivers/target/tcm_fc/tfc_io.c
+++ b/drivers/target/tcm_fc/tfc_io.c
@@ -48,10 +48,7 @@
 #include <scsi/fc_encode.h>
 
 #include <target/target_core_base.h>
-#include <target/target_core_transport.h>
-#include <target/target_core_fabric_ops.h>
-#include <target/target_core_device.h>
-#include <target/target_core_tpg.h>
+#include <target/target_core_fabric.h>
 #include <target/target_core_configfs.h>
 #include <target/configfs_macros.h>
 
diff --git a/drivers/target/tcm_fc/tfc_sess.c b/drivers/target/tcm_fc/tfc_sess.c
index 3269213..4c0507c 100644
--- a/drivers/target/tcm_fc/tfc_sess.c
+++ b/drivers/target/tcm_fc/tfc_sess.c
@@ -40,10 +40,7 @@
 #include <scsi/libfc.h>
 
 #include <target/target_core_base.h>
-#include <target/target_core_transport.h>
-#include <target/target_core_fabric_ops.h>
-#include <target/target_core_device.h>
-#include <target/target_core_tpg.h>
+#include <target/target_core_fabric.h>
 #include <target/target_core_configfs.h>
 #include <target/configfs_macros.h>
 
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index 6958594..9ae0240 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -268,7 +268,7 @@
 	struct dma_slave_config tx_conf = {
 		.dst_addr = uap->port.mapbase + UART01x_DR,
 		.dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE,
-		.direction = DMA_TO_DEVICE,
+		.direction = DMA_MEM_TO_DEV,
 		.dst_maxburst = uap->fifosize >> 1,
 	};
 	struct dma_chan *chan;
@@ -301,7 +301,7 @@
 		struct dma_slave_config rx_conf = {
 			.src_addr = uap->port.mapbase + UART01x_DR,
 			.src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE,
-			.direction = DMA_FROM_DEVICE,
+			.direction = DMA_DEV_TO_MEM,
 			.src_maxburst = uap->fifosize >> 1,
 		};
 
@@ -480,7 +480,7 @@
 		return -EBUSY;
 	}
 
-	desc = dma_dev->device_prep_slave_sg(chan, &dmatx->sg, 1, DMA_TO_DEVICE,
+	desc = dma_dev->device_prep_slave_sg(chan, &dmatx->sg, 1, DMA_MEM_TO_DEV,
 					     DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 	if (!desc) {
 		dma_unmap_sg(dma_dev->dev, &dmatx->sg, 1, DMA_TO_DEVICE);
@@ -676,7 +676,7 @@
 		&uap->dmarx.sgbuf_b : &uap->dmarx.sgbuf_a;
 	dma_dev = rxchan->device;
 	desc = rxchan->device->device_prep_slave_sg(rxchan, &sgbuf->sg, 1,
-					DMA_FROM_DEVICE,
+					DMA_DEV_TO_MEM,
 					DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 	/*
 	 * If the DMA engine is busy and cannot prepare a
diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index de0f613..17ae657 100644
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -764,7 +764,7 @@
 	sg_dma_address(sg) = priv->rx_buf_dma;
 
 	desc = priv->chan_rx->device->device_prep_slave_sg(priv->chan_rx,
-			sg, 1, DMA_FROM_DEVICE,
+			sg, 1, DMA_DEV_TO_MEM,
 			DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 
 	if (!desc)
@@ -923,7 +923,7 @@
 	}
 
 	desc = priv->chan_tx->device->device_prep_slave_sg(priv->chan_tx,
-					priv->sg_tx_p, nent, DMA_TO_DEVICE,
+					priv->sg_tx_p, nent, DMA_MEM_TO_DEV,
 					DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 	if (!desc) {
 		dev_err(priv->port.dev, "%s:device_prep_slave_sg Failed\n",
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 9e62349..7508579 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -1339,7 +1339,7 @@
 		struct dma_async_tx_descriptor *desc;
 
 		desc = chan->device->device_prep_slave_sg(chan,
-			sg, 1, DMA_FROM_DEVICE, DMA_PREP_INTERRUPT);
+			sg, 1, DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT);
 
 		if (desc) {
 			s->desc_rx[i] = desc;
@@ -1454,7 +1454,7 @@
 	BUG_ON(!sg_dma_len(sg));
 
 	desc = chan->device->device_prep_slave_sg(chan,
-			sg, s->sg_len_tx, DMA_TO_DEVICE,
+			sg, s->sg_len_tx, DMA_MEM_TO_DEV,
 			DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 	if (!desc) {
 		/* switch to PIO */
diff --git a/drivers/usb/host/ehci-xilinx-of.c b/drivers/usb/host/ehci-xilinx-of.c
index 32793ce..9c2cc46 100644
--- a/drivers/usb/host/ehci-xilinx-of.c
+++ b/drivers/usb/host/ehci-xilinx-of.c
@@ -183,7 +183,7 @@
 	}
 
 	irq = irq_of_parse_and_map(dn, 0);
-	if (irq == NO_IRQ) {
+	if (!irq) {
 		printk(KERN_ERR "%s: irq_of_parse_and_map failed\n", __FILE__);
 		rv = -EBUSY;
 		goto err_irq;
diff --git a/drivers/usb/musb/ux500_dma.c b/drivers/usb/musb/ux500_dma.c
index a163632..97cb459 100644
--- a/drivers/usb/musb/ux500_dma.c
+++ b/drivers/usb/musb/ux500_dma.c
@@ -84,7 +84,7 @@
 	struct musb_hw_ep *hw_ep = ux500_channel->hw_ep;
 	struct dma_chan *dma_chan = ux500_channel->dma_chan;
 	struct dma_async_tx_descriptor *dma_desc;
-	enum dma_data_direction direction;
+	enum dma_transfer_direction direction;
 	struct scatterlist sg;
 	struct dma_slave_config slave_conf;
 	enum dma_slave_buswidth addr_width;
@@ -104,7 +104,7 @@
 	sg_dma_address(&sg) = dma_addr;
 	sg_dma_len(&sg) = len;
 
-	direction = ux500_channel->is_tx ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
+	direction = ux500_channel->is_tx ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;
 	addr_width = (len & 0x3) ? DMA_SLAVE_BUSWIDTH_1_BYTE :
 					DMA_SLAVE_BUSWIDTH_4_BYTES;
 
diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c
index b51fcd8..72339bd 100644
--- a/drivers/usb/renesas_usbhs/fifo.c
+++ b/drivers/usb/renesas_usbhs/fifo.c
@@ -772,10 +772,10 @@
 	struct dma_async_tx_descriptor *desc;
 	struct dma_chan *chan = usbhsf_dma_chan_get(fifo, pkt);
 	struct device *dev = usbhs_priv_to_dev(priv);
-	enum dma_data_direction dir;
+	enum dma_transfer_direction dir;
 	dma_cookie_t cookie;
 
-	dir = usbhs_pipe_is_dir_in(pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
+	dir = usbhs_pipe_is_dir_in(pipe) ? DMA_DEV_TO_MEM : DMA_MEM_TO_DEV;
 
 	sg_init_table(&sg, 1);
 	sg_set_page(&sg, virt_to_page(pkt->dma),
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index 882a51f..9dab1f5 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -856,9 +856,9 @@
 };
 
 static struct miscdevice vhost_net_misc = {
-	MISC_DYNAMIC_MINOR,
-	"vhost-net",
-	&vhost_net_fops,
+	.minor = VHOST_NET_MINOR,
+	.name = "vhost-net",
+	.fops = &vhost_net_fops,
 };
 
 static int vhost_net_init(void)
@@ -879,3 +879,5 @@
 MODULE_LICENSE("GPL v2");
 MODULE_AUTHOR("Michael S. Tsirkin");
 MODULE_DESCRIPTION("Host kernel accelerator for virtio net");
+MODULE_ALIAS_MISCDEV(VHOST_NET_MINOR);
+MODULE_ALIAS("devname:vhost-net");
diff --git a/drivers/video/mx3fb.c b/drivers/video/mx3fb.c
index e3406ab..727a514 100644
--- a/drivers/video/mx3fb.c
+++ b/drivers/video/mx3fb.c
@@ -245,6 +245,7 @@
 
 	uint32_t		h_start_width;
 	uint32_t		v_start_width;
+	enum disp_data_mapping	disp_data_fmt;
 };
 
 struct dma_chan_request {
@@ -287,11 +288,14 @@
 	__raw_writel(value, mx3fb->reg_base + reg);
 }
 
-static const uint32_t di_mappings[] = {
-	0x1600AAAA, 0x00E05555, 0x00070000, 3,	/* RGB888 */
-	0x0005000F, 0x000B000F, 0x0011000F, 1,	/* RGB666 */
-	0x0011000F, 0x000B000F, 0x0005000F, 1,	/* BGR666 */
-	0x0004003F, 0x000A000F, 0x000F003F, 1	/* RGB565 */
+struct di_mapping {
+	uint32_t b0, b1, b2;
+};
+
+static const struct di_mapping di_mappings[] = {
+	[IPU_DISP_DATA_MAPPING_RGB666] = { 0x0005000f, 0x000b000f, 0x0011000f },
+	[IPU_DISP_DATA_MAPPING_RGB565] = { 0x0004003f, 0x000a000f, 0x000f003f },
+	[IPU_DISP_DATA_MAPPING_RGB888] = { 0x00070000, 0x000f0000, 0x00170000 },
 };
 
 static void sdc_fb_init(struct mx3fb_info *fbi)
@@ -334,7 +338,7 @@
 	/* This enables the channel */
 	if (mx3_fbi->cookie < 0) {
 		mx3_fbi->txd = dma_chan->device->device_prep_slave_sg(dma_chan,
-		      &mx3_fbi->sg[0], 1, DMA_TO_DEVICE, DMA_PREP_INTERRUPT);
+		      &mx3_fbi->sg[0], 1, DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT);
 		if (!mx3_fbi->txd) {
 			dev_err(mx3fb->dev, "Cannot allocate descriptor on %d\n",
 				dma_chan->chan_id);
@@ -425,7 +429,6 @@
  * @pixel_clk:		desired pixel clock frequency in Hz.
  * @width:		width of panel in pixels.
  * @height:		height of panel in pixels.
- * @pixel_fmt:		pixel format of buffer as FOURCC ASCII code.
  * @h_start_width:	number of pixel clocks between the HSYNC signal pulse
  *			and the start of valid data.
  * @h_sync_width:	width of the HSYNC signal in units of pixel clocks.
@@ -442,7 +445,6 @@
 static int sdc_init_panel(struct mx3fb_data *mx3fb, enum ipu_panel panel,
 			  uint32_t pixel_clk,
 			  uint16_t width, uint16_t height,
-			  enum pixel_fmt pixel_fmt,
 			  uint16_t h_start_width, uint16_t h_sync_width,
 			  uint16_t h_end_width, uint16_t v_start_width,
 			  uint16_t v_sync_width, uint16_t v_end_width,
@@ -453,6 +455,7 @@
 	uint32_t old_conf;
 	uint32_t div;
 	struct clk *ipu_clk;
+	const struct di_mapping *map;
 
 	dev_dbg(mx3fb->dev, "panel size = %d x %d", width, height);
 
@@ -540,36 +543,10 @@
 		sig.Vsync_pol << DI_D3_VSYNC_POL_SHIFT;
 	mx3fb_write_reg(mx3fb, old_conf, DI_DISP_SIG_POL);
 
-	switch (pixel_fmt) {
-	case IPU_PIX_FMT_RGB24:
-		mx3fb_write_reg(mx3fb, di_mappings[0], DI_DISP3_B0_MAP);
-		mx3fb_write_reg(mx3fb, di_mappings[1], DI_DISP3_B1_MAP);
-		mx3fb_write_reg(mx3fb, di_mappings[2], DI_DISP3_B2_MAP);
-		mx3fb_write_reg(mx3fb, mx3fb_read_reg(mx3fb, DI_DISP_ACC_CC) |
-			     ((di_mappings[3] - 1) << 12), DI_DISP_ACC_CC);
-		break;
-	case IPU_PIX_FMT_RGB666:
-		mx3fb_write_reg(mx3fb, di_mappings[4], DI_DISP3_B0_MAP);
-		mx3fb_write_reg(mx3fb, di_mappings[5], DI_DISP3_B1_MAP);
-		mx3fb_write_reg(mx3fb, di_mappings[6], DI_DISP3_B2_MAP);
-		mx3fb_write_reg(mx3fb, mx3fb_read_reg(mx3fb, DI_DISP_ACC_CC) |
-			     ((di_mappings[7] - 1) << 12), DI_DISP_ACC_CC);
-		break;
-	case IPU_PIX_FMT_BGR666:
-		mx3fb_write_reg(mx3fb, di_mappings[8], DI_DISP3_B0_MAP);
-		mx3fb_write_reg(mx3fb, di_mappings[9], DI_DISP3_B1_MAP);
-		mx3fb_write_reg(mx3fb, di_mappings[10], DI_DISP3_B2_MAP);
-		mx3fb_write_reg(mx3fb, mx3fb_read_reg(mx3fb, DI_DISP_ACC_CC) |
-			     ((di_mappings[11] - 1) << 12), DI_DISP_ACC_CC);
-		break;
-	default:
-		mx3fb_write_reg(mx3fb, di_mappings[12], DI_DISP3_B0_MAP);
-		mx3fb_write_reg(mx3fb, di_mappings[13], DI_DISP3_B1_MAP);
-		mx3fb_write_reg(mx3fb, di_mappings[14], DI_DISP3_B2_MAP);
-		mx3fb_write_reg(mx3fb, mx3fb_read_reg(mx3fb, DI_DISP_ACC_CC) |
-			     ((di_mappings[15] - 1) << 12), DI_DISP_ACC_CC);
-		break;
-	}
+	map = &di_mappings[mx3fb->disp_data_fmt];
+	mx3fb_write_reg(mx3fb, map->b0, DI_DISP3_B0_MAP);
+	mx3fb_write_reg(mx3fb, map->b1, DI_DISP3_B1_MAP);
+	mx3fb_write_reg(mx3fb, map->b2, DI_DISP3_B2_MAP);
 
 	spin_unlock_irqrestore(&mx3fb->lock, lock_flags);
 
@@ -780,8 +757,6 @@
 		if (sdc_init_panel(mx3fb, mode,
 				   (PICOS2KHZ(fbi->var.pixclock)) * 1000UL,
 				   fbi->var.xres, fbi->var.yres,
-				   (fbi->var.sync & FB_SYNC_SWAP_RGB) ?
-				   IPU_PIX_FMT_BGR666 : IPU_PIX_FMT_RGB666,
 				   fbi->var.left_margin,
 				   fbi->var.hsync_len,
 				   fbi->var.right_margin +
@@ -1117,7 +1092,7 @@
 		async_tx_ack(mx3_fbi->txd);
 
 	txd = dma_chan->device->device_prep_slave_sg(dma_chan, sg +
-		mx3_fbi->cur_ipu_buf, 1, DMA_TO_DEVICE, DMA_PREP_INTERRUPT);
+		mx3_fbi->cur_ipu_buf, 1, DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT);
 	if (!txd) {
 		dev_err(fbi->device,
 			"Error preparing a DMA transaction descriptor.\n");
@@ -1349,6 +1324,12 @@
 	const struct fb_videomode *mode;
 	int ret, num_modes;
 
+	if (mx3fb_pdata->disp_data_fmt >= ARRAY_SIZE(di_mappings)) {
+		dev_err(dev, "Illegal display data format %d\n",
+				mx3fb_pdata->disp_data_fmt);
+		return -EINVAL;
+	}
+
 	ichan->client = mx3fb;
 	irq = ichan->eof_irq;
 
@@ -1402,6 +1383,8 @@
 	mx3fbi->mx3fb		= mx3fb;
 	mx3fbi->blank		= FB_BLANK_NORMAL;
 
+	mx3fb->disp_data_fmt	= mx3fb_pdata->disp_data_fmt;
+
 	init_completion(&mx3fbi->flip_cmpl);
 	disable_irq(ichan->eof_irq);
 	dev_dbg(mx3fb->dev, "disabling irq %d\n", ichan->eof_irq);
diff --git a/drivers/xen/biomerge.c b/drivers/xen/biomerge.c
index ba6eda4..0edb91c 100644
--- a/drivers/xen/biomerge.c
+++ b/drivers/xen/biomerge.c
@@ -1,5 +1,6 @@
 #include <linux/bio.h>
 #include <linux/io.h>
+#include <linux/export.h>
 #include <xen/page.h>
 
 bool xen_biovec_phys_mergeable(const struct bio_vec *vec1,
@@ -11,3 +12,4 @@
 	return __BIOVEC_PHYS_MERGEABLE(vec1, vec2) &&
 		((mfn1 == mfn2) || ((mfn1+1) == mfn2));
 }
+EXPORT_SYMBOL(xen_biovec_phys_mergeable);
diff --git a/drivers/xen/xen-balloon.c b/drivers/xen/xen-balloon.c
index 3832e30..596e6a7 100644
--- a/drivers/xen/xen-balloon.c
+++ b/drivers/xen/xen-balloon.c
@@ -221,7 +221,7 @@
 {
 	int i, error;
 
-	error = bus_register(&balloon_subsys);
+	error = subsys_system_register(&balloon_subsys, NULL);
 	if (error)
 		return error;
 
diff --git a/firmware/Makefile b/firmware/Makefile
index 5f43bfb..0d15a3d 100644
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -82,7 +82,6 @@
 fw-shipped-$(CONFIG_PCMCIA_SMC91C92) += ositech/Xilinx7OD.bin
 fw-shipped-$(CONFIG_SCSI_ADVANSYS) += advansys/mcode.bin advansys/38C1600.bin \
 				      advansys/3550.bin advansys/38C0800.bin
-fw-shipped-$(CONFIG_SCSI_ISCI) += isci/isci_firmware.bin
 fw-shipped-$(CONFIG_SCSI_QLOGIC_1280) += qlogic/1040.bin qlogic/1280.bin \
 					 qlogic/12160.bin
 fw-shipped-$(CONFIG_SCSI_QLOGICPTI) += qlogic/isp1000.bin
diff --git a/firmware/isci/isci_firmware.bin.ihex b/firmware/isci/isci_firmware.bin.ihex
deleted file mode 100644
index 2e66195..0000000
--- a/firmware/isci/isci_firmware.bin.ihex
+++ /dev/null
@@ -1,16 +0,0 @@
-:10000000495343554F454D42E80018100002000087
-:1000100000000000000000000101000000000000DE
-:10002000FFFFCF5F0100000008DD0B0000FC0F00A8
-:10003000097C0B006EFC0A00FFFFCF5F010000008F
-:1000400008DD0B0000FC0F00097C0B006EFC0A00B1
-:10005000FFFFCF5F0100000008DD0B0000FC0F0078
-:10006000097C0B006EFC0A00FFFFCF5F010000005F
-:1000700008DD0B0000FC0F00097C0B006EFC0A0081
-:100080000101000000000000FFFFCF5F0200000040
-:1000900008DD0B0000FC0F00097C0B006EFC0A0061
-:1000A000FFFFCF5F0200000008DD0B0000FC0F0027
-:1000B000097C0B006EFC0A00FFFFCF5F020000000E
-:1000C00008DD0B0000FC0F00097C0B006EFC0A0031
-:1000D000FFFFCF5F0200000008DD0B0000FC0F00F7
-:0800E000097C0B006EFC0A0014
-:00000001FF
diff --git a/fs/btrfs/Kconfig b/fs/btrfs/Kconfig
index ecb9fd3..d33f01c 100644
--- a/fs/btrfs/Kconfig
+++ b/fs/btrfs/Kconfig
@@ -31,3 +31,22 @@
 	  Linux website <http://acl.bestbits.at/>.
 
 	  If you don't know what Access Control Lists are, say N
+
+config BTRFS_FS_CHECK_INTEGRITY
+	bool "Btrfs with integrity check tool compiled in (DANGEROUS)"
+	depends on BTRFS_FS
+	help
+	  Adds code that examines all block write requests (including
+	  writes of the super block). The goal is to verify that the
+	  state of the filesystem on disk is always consistent, i.e.,
+	  after a power-loss or kernel panic event the filesystem is
+	  in a consistent state.
+
+	  If the integrity check tool is included and activated in
+	  the mount options, plenty of kernel memory is used, and
+	  plenty of additional CPU cycles are spent. Enabling this
+	  functionality is not intended for normal use.
+
+	  In most cases, unless you are a btrfs developer who needs
+	  to verify the integrity of (super)-block write requests
+	  during the run of a regression test, say N
diff --git a/fs/btrfs/Makefile b/fs/btrfs/Makefile
index c0ddfd2..0c4fa2b 100644
--- a/fs/btrfs/Makefile
+++ b/fs/btrfs/Makefile
@@ -8,6 +8,7 @@
 	   extent_io.o volumes.o async-thread.o ioctl.o locking.o orphan.o \
 	   export.o tree-log.o free-space-cache.o zlib.o lzo.o \
 	   compression.o delayed-ref.o relocation.o delayed-inode.o scrub.o \
-	   reada.o backref.o
+	   reada.o backref.o ulist.o
 
 btrfs-$(CONFIG_BTRFS_FS_POSIX_ACL) += acl.o
+btrfs-$(CONFIG_BTRFS_FS_CHECK_INTEGRITY) += check-integrity.o
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index 22c64ff..b9a8432 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -19,18 +19,789 @@
 #include "ctree.h"
 #include "disk-io.h"
 #include "backref.h"
+#include "ulist.h"
+#include "transaction.h"
+#include "delayed-ref.h"
 
-struct __data_ref {
+/*
+ * this structure records all encountered refs on the way up to the root
+ */
+struct __prelim_ref {
 	struct list_head list;
-	u64 inum;
-	u64 root;
-	u64 extent_data_item_offset;
+	u64 root_id;
+	struct btrfs_key key;
+	int level;
+	int count;
+	u64 parent;
+	u64 wanted_disk_byte;
 };
 
-struct __shared_ref {
-	struct list_head list;
+static int __add_prelim_ref(struct list_head *head, u64 root_id,
+			    struct btrfs_key *key, int level, u64 parent,
+			    u64 wanted_disk_byte, int count)
+{
+	struct __prelim_ref *ref;
+
+	/* in case we're adding delayed refs, we're holding the refs spinlock */
+	ref = kmalloc(sizeof(*ref), GFP_ATOMIC);
+	if (!ref)
+		return -ENOMEM;
+
+	ref->root_id = root_id;
+	if (key)
+		ref->key = *key;
+	else
+		memset(&ref->key, 0, sizeof(ref->key));
+
+	ref->level = level;
+	ref->count = count;
+	ref->parent = parent;
+	ref->wanted_disk_byte = wanted_disk_byte;
+	list_add_tail(&ref->list, head);
+
+	return 0;
+}
+
+static int add_all_parents(struct btrfs_root *root, struct btrfs_path *path,
+				struct ulist *parents,
+				struct extent_buffer *eb, int level,
+				u64 wanted_objectid, u64 wanted_disk_byte)
+{
+	int ret;
+	int slot;
+	struct btrfs_file_extent_item *fi;
+	struct btrfs_key key;
 	u64 disk_byte;
-};
+
+add_parent:
+	ret = ulist_add(parents, eb->start, 0, GFP_NOFS);
+	if (ret < 0)
+		return ret;
+
+	if (level != 0)
+		return 0;
+
+	/*
+	 * if the current leaf is full with EXTENT_DATA items, we must
+	 * check the next one if that holds a reference as well.
+	 * ref->count cannot be used to skip this check.
+	 * repeat this until we don't find any additional EXTENT_DATA items.
+	 */
+	while (1) {
+		ret = btrfs_next_leaf(root, path);
+		if (ret < 0)
+			return ret;
+		if (ret)
+			return 0;
+
+		eb = path->nodes[0];
+		for (slot = 0; slot < btrfs_header_nritems(eb); ++slot) {
+			btrfs_item_key_to_cpu(eb, &key, slot);
+			if (key.objectid != wanted_objectid ||
+			    key.type != BTRFS_EXTENT_DATA_KEY)
+				return 0;
+			fi = btrfs_item_ptr(eb, slot,
+						struct btrfs_file_extent_item);
+			disk_byte = btrfs_file_extent_disk_bytenr(eb, fi);
+			if (disk_byte == wanted_disk_byte)
+				goto add_parent;
+		}
+	}
+
+	return 0;
+}
+
+/*
+ * resolve an indirect backref in the form (root_id, key, level)
+ * to a logical address
+ */
+static int __resolve_indirect_ref(struct btrfs_fs_info *fs_info,
+					struct __prelim_ref *ref,
+					struct ulist *parents)
+{
+	struct btrfs_path *path;
+	struct btrfs_root *root;
+	struct btrfs_key root_key;
+	struct btrfs_key key = {0};
+	struct extent_buffer *eb;
+	int ret = 0;
+	int root_level;
+	int level = ref->level;
+
+	path = btrfs_alloc_path();
+	if (!path)
+		return -ENOMEM;
+
+	root_key.objectid = ref->root_id;
+	root_key.type = BTRFS_ROOT_ITEM_KEY;
+	root_key.offset = (u64)-1;
+	root = btrfs_read_fs_root_no_name(fs_info, &root_key);
+	if (IS_ERR(root)) {
+		ret = PTR_ERR(root);
+		goto out;
+	}
+
+	rcu_read_lock();
+	root_level = btrfs_header_level(root->node);
+	rcu_read_unlock();
+
+	if (root_level + 1 == level)
+		goto out;
+
+	path->lowest_level = level;
+	ret = btrfs_search_slot(NULL, root, &ref->key, path, 0, 0);
+	pr_debug("search slot in root %llu (level %d, ref count %d) returned "
+		 "%d for key (%llu %u %llu)\n",
+		 (unsigned long long)ref->root_id, level, ref->count, ret,
+		 (unsigned long long)ref->key.objectid, ref->key.type,
+		 (unsigned long long)ref->key.offset);
+	if (ret < 0)
+		goto out;
+
+	eb = path->nodes[level];
+	if (!eb) {
+		WARN_ON(1);
+		ret = 1;
+		goto out;
+	}
+
+	if (level == 0) {
+		if (ret == 1 && path->slots[0] >= btrfs_header_nritems(eb)) {
+			ret = btrfs_next_leaf(root, path);
+			if (ret)
+				goto out;
+			eb = path->nodes[0];
+		}
+
+		btrfs_item_key_to_cpu(eb, &key, path->slots[0]);
+	}
+
+	/* the last two parameters will only be used for level == 0 */
+	ret = add_all_parents(root, path, parents, eb, level, key.objectid,
+				ref->wanted_disk_byte);
+out:
+	btrfs_free_path(path);
+	return ret;
+}
+
+/*
+ * resolve all indirect backrefs from the list
+ */
+static int __resolve_indirect_refs(struct btrfs_fs_info *fs_info,
+				   struct list_head *head)
+{
+	int err;
+	int ret = 0;
+	struct __prelim_ref *ref;
+	struct __prelim_ref *ref_safe;
+	struct __prelim_ref *new_ref;
+	struct ulist *parents;
+	struct ulist_node *node;
+
+	parents = ulist_alloc(GFP_NOFS);
+	if (!parents)
+		return -ENOMEM;
+
+	/*
+	 * _safe allows us to insert directly after the current item without
+	 * iterating over the newly inserted items.
+	 * we're also allowed to re-assign ref during iteration.
+	 */
+	list_for_each_entry_safe(ref, ref_safe, head, list) {
+		if (ref->parent)	/* already direct */
+			continue;
+		if (ref->count == 0)
+			continue;
+		err = __resolve_indirect_ref(fs_info, ref, parents);
+		if (err) {
+			if (ret == 0)
+				ret = err;
+			continue;
+		}
+
+		/* we put the first parent into the ref at hand */
+		node = ulist_next(parents, NULL);
+		ref->parent = node ? node->val : 0;
+
+		/* additional parents require new refs being added here */
+		while ((node = ulist_next(parents, node))) {
+			new_ref = kmalloc(sizeof(*new_ref), GFP_NOFS);
+			if (!new_ref) {
+				ret = -ENOMEM;
+				break;
+			}
+			memcpy(new_ref, ref, sizeof(*ref));
+			new_ref->parent = node->val;
+			list_add(&new_ref->list, &ref->list);
+		}
+		ulist_reinit(parents);
+	}
+
+	ulist_free(parents);
+	return ret;
+}
+
+/*
+ * merge two lists of backrefs and adjust counts accordingly
+ *
+ * mode = 1: merge identical keys, if key is set
+ * mode = 2: merge identical parents
+ */
+static int __merge_refs(struct list_head *head, int mode)
+{
+	struct list_head *pos1;
+
+	list_for_each(pos1, head) {
+		struct list_head *n2;
+		struct list_head *pos2;
+		struct __prelim_ref *ref1;
+
+		ref1 = list_entry(pos1, struct __prelim_ref, list);
+
+		if (mode == 1 && ref1->key.type == 0)
+			continue;
+		for (pos2 = pos1->next, n2 = pos2->next; pos2 != head;
+		     pos2 = n2, n2 = pos2->next) {
+			struct __prelim_ref *ref2;
+
+			ref2 = list_entry(pos2, struct __prelim_ref, list);
+
+			if (mode == 1) {
+				if (memcmp(&ref1->key, &ref2->key,
+					   sizeof(ref1->key)) ||
+				    ref1->level != ref2->level ||
+				    ref1->root_id != ref2->root_id)
+					continue;
+				ref1->count += ref2->count;
+			} else {
+				if (ref1->parent != ref2->parent)
+					continue;
+				ref1->count += ref2->count;
+			}
+			list_del(&ref2->list);
+			kfree(ref2);
+		}
+
+	}
+	return 0;
+}
+
+/*
+ * add all currently queued delayed refs from this head whose seq nr is
+ * smaller or equal that seq to the list
+ */
+static int __add_delayed_refs(struct btrfs_delayed_ref_head *head, u64 seq,
+			      struct btrfs_key *info_key,
+			      struct list_head *prefs)
+{
+	struct btrfs_delayed_extent_op *extent_op = head->extent_op;
+	struct rb_node *n = &head->node.rb_node;
+	int sgn;
+	int ret;
+
+	if (extent_op && extent_op->update_key)
+		btrfs_disk_key_to_cpu(info_key, &extent_op->key);
+
+	while ((n = rb_prev(n))) {
+		struct btrfs_delayed_ref_node *node;
+		node = rb_entry(n, struct btrfs_delayed_ref_node,
+				rb_node);
+		if (node->bytenr != head->node.bytenr)
+			break;
+		WARN_ON(node->is_head);
+
+		if (node->seq > seq)
+			continue;
+
+		switch (node->action) {
+		case BTRFS_ADD_DELAYED_EXTENT:
+		case BTRFS_UPDATE_DELAYED_HEAD:
+			WARN_ON(1);
+			continue;
+		case BTRFS_ADD_DELAYED_REF:
+			sgn = 1;
+			break;
+		case BTRFS_DROP_DELAYED_REF:
+			sgn = -1;
+			break;
+		default:
+			BUG_ON(1);
+		}
+		switch (node->type) {
+		case BTRFS_TREE_BLOCK_REF_KEY: {
+			struct btrfs_delayed_tree_ref *ref;
+
+			ref = btrfs_delayed_node_to_tree_ref(node);
+			ret = __add_prelim_ref(prefs, ref->root, info_key,
+					       ref->level + 1, 0, node->bytenr,
+					       node->ref_mod * sgn);
+			break;
+		}
+		case BTRFS_SHARED_BLOCK_REF_KEY: {
+			struct btrfs_delayed_tree_ref *ref;
+
+			ref = btrfs_delayed_node_to_tree_ref(node);
+			ret = __add_prelim_ref(prefs, ref->root, info_key,
+					       ref->level + 1, ref->parent,
+					       node->bytenr,
+					       node->ref_mod * sgn);
+			break;
+		}
+		case BTRFS_EXTENT_DATA_REF_KEY: {
+			struct btrfs_delayed_data_ref *ref;
+			struct btrfs_key key;
+
+			ref = btrfs_delayed_node_to_data_ref(node);
+
+			key.objectid = ref->objectid;
+			key.type = BTRFS_EXTENT_DATA_KEY;
+			key.offset = ref->offset;
+			ret = __add_prelim_ref(prefs, ref->root, &key, 0, 0,
+					       node->bytenr,
+					       node->ref_mod * sgn);
+			break;
+		}
+		case BTRFS_SHARED_DATA_REF_KEY: {
+			struct btrfs_delayed_data_ref *ref;
+			struct btrfs_key key;
+
+			ref = btrfs_delayed_node_to_data_ref(node);
+
+			key.objectid = ref->objectid;
+			key.type = BTRFS_EXTENT_DATA_KEY;
+			key.offset = ref->offset;
+			ret = __add_prelim_ref(prefs, ref->root, &key, 0,
+					       ref->parent, node->bytenr,
+					       node->ref_mod * sgn);
+			break;
+		}
+		default:
+			WARN_ON(1);
+		}
+		BUG_ON(ret);
+	}
+
+	return 0;
+}
+
+/*
+ * add all inline backrefs for bytenr to the list
+ */
+static int __add_inline_refs(struct btrfs_fs_info *fs_info,
+			     struct btrfs_path *path, u64 bytenr,
+			     struct btrfs_key *info_key, int *info_level,
+			     struct list_head *prefs)
+{
+	int ret;
+	int slot;
+	struct extent_buffer *leaf;
+	struct btrfs_key key;
+	unsigned long ptr;
+	unsigned long end;
+	struct btrfs_extent_item *ei;
+	u64 flags;
+	u64 item_size;
+
+	/*
+	 * enumerate all inline refs
+	 */
+	leaf = path->nodes[0];
+	slot = path->slots[0] - 1;
+
+	item_size = btrfs_item_size_nr(leaf, slot);
+	BUG_ON(item_size < sizeof(*ei));
+
+	ei = btrfs_item_ptr(leaf, slot, struct btrfs_extent_item);
+	flags = btrfs_extent_flags(leaf, ei);
+
+	ptr = (unsigned long)(ei + 1);
+	end = (unsigned long)ei + item_size;
+
+	if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
+		struct btrfs_tree_block_info *info;
+		struct btrfs_disk_key disk_key;
+
+		info = (struct btrfs_tree_block_info *)ptr;
+		*info_level = btrfs_tree_block_level(leaf, info);
+		btrfs_tree_block_key(leaf, info, &disk_key);
+		btrfs_disk_key_to_cpu(info_key, &disk_key);
+		ptr += sizeof(struct btrfs_tree_block_info);
+		BUG_ON(ptr > end);
+	} else {
+		BUG_ON(!(flags & BTRFS_EXTENT_FLAG_DATA));
+	}
+
+	while (ptr < end) {
+		struct btrfs_extent_inline_ref *iref;
+		u64 offset;
+		int type;
+
+		iref = (struct btrfs_extent_inline_ref *)ptr;
+		type = btrfs_extent_inline_ref_type(leaf, iref);
+		offset = btrfs_extent_inline_ref_offset(leaf, iref);
+
+		switch (type) {
+		case BTRFS_SHARED_BLOCK_REF_KEY:
+			ret = __add_prelim_ref(prefs, 0, info_key,
+						*info_level + 1, offset,
+						bytenr, 1);
+			break;
+		case BTRFS_SHARED_DATA_REF_KEY: {
+			struct btrfs_shared_data_ref *sdref;
+			int count;
+
+			sdref = (struct btrfs_shared_data_ref *)(iref + 1);
+			count = btrfs_shared_data_ref_count(leaf, sdref);
+			ret = __add_prelim_ref(prefs, 0, NULL, 0, offset,
+					       bytenr, count);
+			break;
+		}
+		case BTRFS_TREE_BLOCK_REF_KEY:
+			ret = __add_prelim_ref(prefs, offset, info_key,
+					       *info_level + 1, 0, bytenr, 1);
+			break;
+		case BTRFS_EXTENT_DATA_REF_KEY: {
+			struct btrfs_extent_data_ref *dref;
+			int count;
+			u64 root;
+
+			dref = (struct btrfs_extent_data_ref *)(&iref->offset);
+			count = btrfs_extent_data_ref_count(leaf, dref);
+			key.objectid = btrfs_extent_data_ref_objectid(leaf,
+								      dref);
+			key.type = BTRFS_EXTENT_DATA_KEY;
+			key.offset = btrfs_extent_data_ref_offset(leaf, dref);
+			root = btrfs_extent_data_ref_root(leaf, dref);
+			ret = __add_prelim_ref(prefs, root, &key, 0, 0, bytenr,
+						count);
+			break;
+		}
+		default:
+			WARN_ON(1);
+		}
+		BUG_ON(ret);
+		ptr += btrfs_extent_inline_ref_size(type);
+	}
+
+	return 0;
+}
+
+/*
+ * add all non-inline backrefs for bytenr to the list
+ */
+static int __add_keyed_refs(struct btrfs_fs_info *fs_info,
+			    struct btrfs_path *path, u64 bytenr,
+			    struct btrfs_key *info_key, int info_level,
+			    struct list_head *prefs)
+{
+	struct btrfs_root *extent_root = fs_info->extent_root;
+	int ret;
+	int slot;
+	struct extent_buffer *leaf;
+	struct btrfs_key key;
+
+	while (1) {
+		ret = btrfs_next_item(extent_root, path);
+		if (ret < 0)
+			break;
+		if (ret) {
+			ret = 0;
+			break;
+		}
+
+		slot = path->slots[0];
+		leaf = path->nodes[0];
+		btrfs_item_key_to_cpu(leaf, &key, slot);
+
+		if (key.objectid != bytenr)
+			break;
+		if (key.type < BTRFS_TREE_BLOCK_REF_KEY)
+			continue;
+		if (key.type > BTRFS_SHARED_DATA_REF_KEY)
+			break;
+
+		switch (key.type) {
+		case BTRFS_SHARED_BLOCK_REF_KEY:
+			ret = __add_prelim_ref(prefs, 0, info_key,
+						info_level + 1, key.offset,
+						bytenr, 1);
+			break;
+		case BTRFS_SHARED_DATA_REF_KEY: {
+			struct btrfs_shared_data_ref *sdref;
+			int count;
+
+			sdref = btrfs_item_ptr(leaf, slot,
+					      struct btrfs_shared_data_ref);
+			count = btrfs_shared_data_ref_count(leaf, sdref);
+			ret = __add_prelim_ref(prefs, 0, NULL, 0, key.offset,
+						bytenr, count);
+			break;
+		}
+		case BTRFS_TREE_BLOCK_REF_KEY:
+			ret = __add_prelim_ref(prefs, key.offset, info_key,
+						info_level + 1, 0, bytenr, 1);
+			break;
+		case BTRFS_EXTENT_DATA_REF_KEY: {
+			struct btrfs_extent_data_ref *dref;
+			int count;
+			u64 root;
+
+			dref = btrfs_item_ptr(leaf, slot,
+					      struct btrfs_extent_data_ref);
+			count = btrfs_extent_data_ref_count(leaf, dref);
+			key.objectid = btrfs_extent_data_ref_objectid(leaf,
+								      dref);
+			key.type = BTRFS_EXTENT_DATA_KEY;
+			key.offset = btrfs_extent_data_ref_offset(leaf, dref);
+			root = btrfs_extent_data_ref_root(leaf, dref);
+			ret = __add_prelim_ref(prefs, root, &key, 0, 0,
+						bytenr, count);
+			break;
+		}
+		default:
+			WARN_ON(1);
+		}
+		BUG_ON(ret);
+	}
+
+	return ret;
+}
+
+/*
+ * this adds all existing backrefs (inline backrefs, backrefs and delayed
+ * refs) for the given bytenr to the refs list, merges duplicates and resolves
+ * indirect refs to their parent bytenr.
+ * When roots are found, they're added to the roots list
+ *
+ * FIXME some caching might speed things up
+ */
+static int find_parent_nodes(struct btrfs_trans_handle *trans,
+			     struct btrfs_fs_info *fs_info, u64 bytenr,
+			     u64 seq, struct ulist *refs, struct ulist *roots)
+{
+	struct btrfs_key key;
+	struct btrfs_path *path;
+	struct btrfs_key info_key = { 0 };
+	struct btrfs_delayed_ref_root *delayed_refs = NULL;
+	struct btrfs_delayed_ref_head *head = NULL;
+	int info_level = 0;
+	int ret;
+	struct list_head prefs_delayed;
+	struct list_head prefs;
+	struct __prelim_ref *ref;
+
+	INIT_LIST_HEAD(&prefs);
+	INIT_LIST_HEAD(&prefs_delayed);
+
+	key.objectid = bytenr;
+	key.type = BTRFS_EXTENT_ITEM_KEY;
+	key.offset = (u64)-1;
+
+	path = btrfs_alloc_path();
+	if (!path)
+		return -ENOMEM;
+
+	/*
+	 * grab both a lock on the path and a lock on the delayed ref head.
+	 * We need both to get a consistent picture of how the refs look
+	 * at a specified point in time
+	 */
+again:
+	ret = btrfs_search_slot(trans, fs_info->extent_root, &key, path, 0, 0);
+	if (ret < 0)
+		goto out;
+	BUG_ON(ret == 0);
+
+	/*
+	 * look if there are updates for this ref queued and lock the head
+	 */
+	delayed_refs = &trans->transaction->delayed_refs;
+	spin_lock(&delayed_refs->lock);
+	head = btrfs_find_delayed_ref_head(trans, bytenr);
+	if (head) {
+		if (!mutex_trylock(&head->mutex)) {
+			atomic_inc(&head->node.refs);
+			spin_unlock(&delayed_refs->lock);
+
+			btrfs_release_path(path);
+
+			/*
+			 * Mutex was contended, block until it's
+			 * released and try again
+			 */
+			mutex_lock(&head->mutex);
+			mutex_unlock(&head->mutex);
+			btrfs_put_delayed_ref(&head->node);
+			goto again;
+		}
+		ret = __add_delayed_refs(head, seq, &info_key, &prefs_delayed);
+		if (ret)
+			goto out;
+	}
+	spin_unlock(&delayed_refs->lock);
+
+	if (path->slots[0]) {
+		struct extent_buffer *leaf;
+		int slot;
+
+		leaf = path->nodes[0];
+		slot = path->slots[0] - 1;
+		btrfs_item_key_to_cpu(leaf, &key, slot);
+		if (key.objectid == bytenr &&
+		    key.type == BTRFS_EXTENT_ITEM_KEY) {
+			ret = __add_inline_refs(fs_info, path, bytenr,
+						&info_key, &info_level, &prefs);
+			if (ret)
+				goto out;
+			ret = __add_keyed_refs(fs_info, path, bytenr, &info_key,
+					       info_level, &prefs);
+			if (ret)
+				goto out;
+		}
+	}
+	btrfs_release_path(path);
+
+	/*
+	 * when adding the delayed refs above, the info_key might not have
+	 * been known yet. Go over the list and replace the missing keys
+	 */
+	list_for_each_entry(ref, &prefs_delayed, list) {
+		if ((ref->key.offset | ref->key.type | ref->key.objectid) == 0)
+			memcpy(&ref->key, &info_key, sizeof(ref->key));
+	}
+	list_splice_init(&prefs_delayed, &prefs);
+
+	ret = __merge_refs(&prefs, 1);
+	if (ret)
+		goto out;
+
+	ret = __resolve_indirect_refs(fs_info, &prefs);
+	if (ret)
+		goto out;
+
+	ret = __merge_refs(&prefs, 2);
+	if (ret)
+		goto out;
+
+	while (!list_empty(&prefs)) {
+		ref = list_first_entry(&prefs, struct __prelim_ref, list);
+		list_del(&ref->list);
+		if (ref->count < 0)
+			WARN_ON(1);
+		if (ref->count && ref->root_id && ref->parent == 0) {
+			/* no parent == root of tree */
+			ret = ulist_add(roots, ref->root_id, 0, GFP_NOFS);
+			BUG_ON(ret < 0);
+		}
+		if (ref->count && ref->parent) {
+			ret = ulist_add(refs, ref->parent, 0, GFP_NOFS);
+			BUG_ON(ret < 0);
+		}
+		kfree(ref);
+	}
+
+out:
+	if (head)
+		mutex_unlock(&head->mutex);
+	btrfs_free_path(path);
+	while (!list_empty(&prefs)) {
+		ref = list_first_entry(&prefs, struct __prelim_ref, list);
+		list_del(&ref->list);
+		kfree(ref);
+	}
+	while (!list_empty(&prefs_delayed)) {
+		ref = list_first_entry(&prefs_delayed, struct __prelim_ref,
+				       list);
+		list_del(&ref->list);
+		kfree(ref);
+	}
+
+	return ret;
+}
+
+/*
+ * Finds all leafs with a reference to the specified combination of bytenr and
+ * offset. key_list_head will point to a list of corresponding keys (caller must
+ * free each list element). The leafs will be stored in the leafs ulist, which
+ * must be freed with ulist_free.
+ *
+ * returns 0 on success, <0 on error
+ */
+static int btrfs_find_all_leafs(struct btrfs_trans_handle *trans,
+				struct btrfs_fs_info *fs_info, u64 bytenr,
+				u64 num_bytes, u64 seq, struct ulist **leafs)
+{
+	struct ulist *tmp;
+	int ret;
+
+	tmp = ulist_alloc(GFP_NOFS);
+	if (!tmp)
+		return -ENOMEM;
+	*leafs = ulist_alloc(GFP_NOFS);
+	if (!*leafs) {
+		ulist_free(tmp);
+		return -ENOMEM;
+	}
+
+	ret = find_parent_nodes(trans, fs_info, bytenr, seq, *leafs, tmp);
+	ulist_free(tmp);
+
+	if (ret < 0 && ret != -ENOENT) {
+		ulist_free(*leafs);
+		return ret;
+	}
+
+	return 0;
+}
+
+/*
+ * walk all backrefs for a given extent to find all roots that reference this
+ * extent. Walking a backref means finding all extents that reference this
+ * extent and in turn walk the backrefs of those, too. Naturally this is a
+ * recursive process, but here it is implemented in an iterative fashion: We
+ * find all referencing extents for the extent in question and put them on a
+ * list. In turn, we find all referencing extents for those, further appending
+ * to the list. The way we iterate the list allows adding more elements after
+ * the current while iterating. The process stops when we reach the end of the
+ * list. Found roots are added to the roots list.
+ *
+ * returns 0 on success, < 0 on error.
+ */
+int btrfs_find_all_roots(struct btrfs_trans_handle *trans,
+				struct btrfs_fs_info *fs_info, u64 bytenr,
+				u64 num_bytes, u64 seq, struct ulist **roots)
+{
+	struct ulist *tmp;
+	struct ulist_node *node = NULL;
+	int ret;
+
+	tmp = ulist_alloc(GFP_NOFS);
+	if (!tmp)
+		return -ENOMEM;
+	*roots = ulist_alloc(GFP_NOFS);
+	if (!*roots) {
+		ulist_free(tmp);
+		return -ENOMEM;
+	}
+
+	while (1) {
+		ret = find_parent_nodes(trans, fs_info, bytenr, seq,
+					tmp, *roots);
+		if (ret < 0 && ret != -ENOENT) {
+			ulist_free(tmp);
+			ulist_free(*roots);
+			return ret;
+		}
+		node = ulist_next(tmp, node);
+		if (!node)
+			break;
+		bytenr = node->val;
+	}
+
+	ulist_free(tmp);
+	return 0;
+}
+
 
 static int __inode_info(u64 inum, u64 ioff, u8 key_type,
 			struct btrfs_root *fs_root, struct btrfs_path *path,
@@ -181,8 +952,11 @@
 	btrfs_item_key_to_cpu(path->nodes[0], found_key, path->slots[0]);
 	if (found_key->type != BTRFS_EXTENT_ITEM_KEY ||
 	    found_key->objectid > logical ||
-	    found_key->objectid + found_key->offset <= logical)
+	    found_key->objectid + found_key->offset <= logical) {
+		pr_debug("logical %llu is not within any extent\n",
+			 (unsigned long long)logical);
 		return -ENOENT;
+	}
 
 	eb = path->nodes[0];
 	item_size = btrfs_item_size_nr(eb, path->slots[0]);
@@ -191,6 +965,13 @@
 	ei = btrfs_item_ptr(eb, path->slots[0], struct btrfs_extent_item);
 	flags = btrfs_extent_flags(eb, ei);
 
+	pr_debug("logical %llu is at position %llu within the extent (%llu "
+		 "EXTENT_ITEM %llu) flags %#llx size %u\n",
+		 (unsigned long long)logical,
+		 (unsigned long long)(logical - found_key->objectid),
+		 (unsigned long long)found_key->objectid,
+		 (unsigned long long)found_key->offset,
+		 (unsigned long long)flags, item_size);
 	if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK)
 		return BTRFS_EXTENT_FLAG_TREE_BLOCK;
 	if (flags & BTRFS_EXTENT_FLAG_DATA)
@@ -287,128 +1068,11 @@
 	return 0;
 }
 
-static int __data_list_add(struct list_head *head, u64 inum,
-				u64 extent_data_item_offset, u64 root)
-{
-	struct __data_ref *ref;
-
-	ref = kmalloc(sizeof(*ref), GFP_NOFS);
-	if (!ref)
-		return -ENOMEM;
-
-	ref->inum = inum;
-	ref->extent_data_item_offset = extent_data_item_offset;
-	ref->root = root;
-	list_add_tail(&ref->list, head);
-
-	return 0;
-}
-
-static int __data_list_add_eb(struct list_head *head, struct extent_buffer *eb,
-				struct btrfs_extent_data_ref *dref)
-{
-	return __data_list_add(head, btrfs_extent_data_ref_objectid(eb, dref),
-				btrfs_extent_data_ref_offset(eb, dref),
-				btrfs_extent_data_ref_root(eb, dref));
-}
-
-static int __shared_list_add(struct list_head *head, u64 disk_byte)
-{
-	struct __shared_ref *ref;
-
-	ref = kmalloc(sizeof(*ref), GFP_NOFS);
-	if (!ref)
-		return -ENOMEM;
-
-	ref->disk_byte = disk_byte;
-	list_add_tail(&ref->list, head);
-
-	return 0;
-}
-
-static int __iter_shared_inline_ref_inodes(struct btrfs_fs_info *fs_info,
-					   u64 logical, u64 inum,
-					   u64 extent_data_item_offset,
-					   u64 extent_offset,
-					   struct btrfs_path *path,
-					   struct list_head *data_refs,
-					   iterate_extent_inodes_t *iterate,
-					   void *ctx)
-{
-	u64 ref_root;
-	u32 item_size;
-	struct btrfs_key key;
-	struct extent_buffer *eb;
-	struct btrfs_extent_item *ei;
-	struct btrfs_extent_inline_ref *eiref;
-	struct __data_ref *ref;
-	int ret;
-	int type;
-	int last;
-	unsigned long ptr = 0;
-
-	WARN_ON(!list_empty(data_refs));
-	ret = extent_from_logical(fs_info, logical, path, &key);
-	if (ret & BTRFS_EXTENT_FLAG_DATA)
-		ret = -EIO;
-	if (ret < 0)
-		goto out;
-
-	eb = path->nodes[0];
-	ei = btrfs_item_ptr(eb, path->slots[0], struct btrfs_extent_item);
-	item_size = btrfs_item_size_nr(eb, path->slots[0]);
-
-	ret = 0;
-	ref_root = 0;
-	/*
-	 * as done in iterate_extent_inodes, we first build a list of refs to
-	 * iterate, then free the path and then iterate them to avoid deadlocks.
-	 */
-	do {
-		last = __get_extent_inline_ref(&ptr, eb, ei, item_size,
-						&eiref, &type);
-		if (last < 0) {
-			ret = last;
-			goto out;
-		}
-		if (type == BTRFS_TREE_BLOCK_REF_KEY ||
-		    type == BTRFS_SHARED_BLOCK_REF_KEY) {
-			ref_root = btrfs_extent_inline_ref_offset(eb, eiref);
-			ret = __data_list_add(data_refs, inum,
-						extent_data_item_offset,
-						ref_root);
-		}
-	} while (!ret && !last);
-
-	btrfs_release_path(path);
-
-	if (ref_root == 0) {
-		printk(KERN_ERR "btrfs: failed to find tree block ref "
-			"for shared data backref %llu\n", logical);
-		WARN_ON(1);
-		ret = -EIO;
-	}
-
-out:
-	while (!list_empty(data_refs)) {
-		ref = list_first_entry(data_refs, struct __data_ref, list);
-		list_del(&ref->list);
-		if (!ret)
-			ret = iterate(ref->inum, extent_offset +
-					ref->extent_data_item_offset,
-					ref->root, ctx);
-		kfree(ref);
-	}
-
-	return ret;
-}
-
-static int __iter_shared_inline_ref(struct btrfs_fs_info *fs_info,
-				    u64 logical, u64 orig_extent_item_objectid,
-				    u64 extent_offset, struct btrfs_path *path,
-				    struct list_head *data_refs,
-				    iterate_extent_inodes_t *iterate,
-				    void *ctx)
+static int iterate_leaf_refs(struct btrfs_fs_info *fs_info,
+				struct btrfs_path *path, u64 logical,
+				u64 orig_extent_item_objectid,
+				u64 extent_item_pos, u64 root,
+				iterate_extent_inodes_t *iterate, void *ctx)
 {
 	u64 disk_byte;
 	struct btrfs_key key;
@@ -416,8 +1080,10 @@
 	struct extent_buffer *eb;
 	int slot;
 	int nritems;
-	int ret;
-	int found = 0;
+	int ret = 0;
+	int extent_type;
+	u64 data_offset;
+	u64 data_len;
 
 	eb = read_tree_block(fs_info->tree_root, logical,
 				fs_info->tree_root->leafsize, 0);
@@ -435,149 +1101,99 @@
 		if (key.type != BTRFS_EXTENT_DATA_KEY)
 			continue;
 		fi = btrfs_item_ptr(eb, slot, struct btrfs_file_extent_item);
-		if (!fi) {
-			free_extent_buffer(eb);
-			return -EIO;
-		}
+		extent_type = btrfs_file_extent_type(eb, fi);
+		if (extent_type == BTRFS_FILE_EXTENT_INLINE)
+			continue;
+		/* don't skip BTRFS_FILE_EXTENT_PREALLOC, we can handle that */
 		disk_byte = btrfs_file_extent_disk_bytenr(eb, fi);
-		if (disk_byte != orig_extent_item_objectid) {
-			if (found)
-				break;
-			else
-				continue;
-		}
-		++found;
-		ret = __iter_shared_inline_ref_inodes(fs_info, logical,
-							key.objectid,
-							key.offset,
-							extent_offset, path,
-							data_refs,
-							iterate, ctx);
-		if (ret)
-			break;
-	}
+		if (disk_byte != orig_extent_item_objectid)
+			continue;
 
-	if (!found) {
-		printk(KERN_ERR "btrfs: failed to follow shared data backref "
-			"to parent %llu\n", logical);
-		WARN_ON(1);
-		ret = -EIO;
+		data_offset = btrfs_file_extent_offset(eb, fi);
+		data_len = btrfs_file_extent_num_bytes(eb, fi);
+
+		if (extent_item_pos < data_offset ||
+		    extent_item_pos >= data_offset + data_len)
+			continue;
+
+		pr_debug("ref for %llu resolved, key (%llu EXTEND_DATA %llu), "
+				"root %llu\n", orig_extent_item_objectid,
+				key.objectid, key.offset, root);
+		ret = iterate(key.objectid,
+				key.offset + (extent_item_pos - data_offset),
+				root, ctx);
+		if (ret) {
+			pr_debug("stopping iteration because ret=%d\n", ret);
+			break;
+		}
 	}
 
 	free_extent_buffer(eb);
+
 	return ret;
 }
 
 /*
  * calls iterate() for every inode that references the extent identified by
- * the given parameters. will use the path given as a parameter and return it
- * released.
+ * the given parameters.
  * when the iterator function returns a non-zero value, iteration stops.
+ * path is guaranteed to be in released state when iterate() is called.
  */
 int iterate_extent_inodes(struct btrfs_fs_info *fs_info,
 				struct btrfs_path *path,
-				u64 extent_item_objectid,
-				u64 extent_offset,
+				u64 extent_item_objectid, u64 extent_item_pos,
 				iterate_extent_inodes_t *iterate, void *ctx)
 {
-	unsigned long ptr = 0;
-	int last;
 	int ret;
-	int type;
-	u64 logical;
-	u32 item_size;
-	struct btrfs_extent_inline_ref *eiref;
-	struct btrfs_extent_data_ref *dref;
-	struct extent_buffer *eb;
-	struct btrfs_extent_item *ei;
-	struct btrfs_key key;
 	struct list_head data_refs = LIST_HEAD_INIT(data_refs);
 	struct list_head shared_refs = LIST_HEAD_INIT(shared_refs);
-	struct __data_ref *ref_d;
-	struct __shared_ref *ref_s;
+	struct btrfs_trans_handle *trans;
+	struct ulist *refs;
+	struct ulist *roots;
+	struct ulist_node *ref_node = NULL;
+	struct ulist_node *root_node = NULL;
+	struct seq_list seq_elem;
+	struct btrfs_delayed_ref_root *delayed_refs;
 
-	eb = path->nodes[0];
-	ei = btrfs_item_ptr(eb, path->slots[0], struct btrfs_extent_item);
-	item_size = btrfs_item_size_nr(eb, path->slots[0]);
+	trans = btrfs_join_transaction(fs_info->extent_root);
+	if (IS_ERR(trans))
+		return PTR_ERR(trans);
 
-	/* first we iterate the inline refs, ... */
-	do {
-		last = __get_extent_inline_ref(&ptr, eb, ei, item_size,
-						&eiref, &type);
-		if (last == -ENOENT) {
-			ret = 0;
+	pr_debug("resolving all inodes for extent %llu\n",
+			extent_item_objectid);
+
+	delayed_refs = &trans->transaction->delayed_refs;
+	spin_lock(&delayed_refs->lock);
+	btrfs_get_delayed_seq(delayed_refs, &seq_elem);
+	spin_unlock(&delayed_refs->lock);
+
+	ret = btrfs_find_all_leafs(trans, fs_info, extent_item_objectid,
+				   extent_item_pos, seq_elem.seq,
+				   &refs);
+
+	if (ret)
+		goto out;
+
+	while (!ret && (ref_node = ulist_next(refs, ref_node))) {
+		ret = btrfs_find_all_roots(trans, fs_info, ref_node->val, -1,
+						seq_elem.seq, &roots);
+		if (ret)
 			break;
-		}
-		if (last < 0) {
-			ret = last;
-			break;
-		}
-
-		if (type == BTRFS_EXTENT_DATA_REF_KEY) {
-			dref = (struct btrfs_extent_data_ref *)(&eiref->offset);
-			ret = __data_list_add_eb(&data_refs, eb, dref);
-		} else if (type == BTRFS_SHARED_DATA_REF_KEY) {
-			logical = btrfs_extent_inline_ref_offset(eb, eiref);
-			ret = __shared_list_add(&shared_refs, logical);
-		}
-	} while (!ret && !last);
-
-	/* ... then we proceed to in-tree references and ... */
-	while (!ret) {
-		++path->slots[0];
-		if (path->slots[0] > btrfs_header_nritems(eb)) {
-			ret = btrfs_next_leaf(fs_info->extent_root, path);
-			if (ret) {
-				if (ret == 1)
-					ret = 0; /* we're done */
-				break;
-			}
-			eb = path->nodes[0];
-		}
-		btrfs_item_key_to_cpu(eb, &key, path->slots[0]);
-		if (key.objectid != extent_item_objectid)
-			break;
-		if (key.type == BTRFS_EXTENT_DATA_REF_KEY) {
-			dref = btrfs_item_ptr(eb, path->slots[0],
-						struct btrfs_extent_data_ref);
-			ret = __data_list_add_eb(&data_refs, eb, dref);
-		} else if (key.type == BTRFS_SHARED_DATA_REF_KEY) {
-			ret = __shared_list_add(&shared_refs, key.offset);
+		while (!ret && (root_node = ulist_next(roots, root_node))) {
+			pr_debug("root %llu references leaf %llu\n",
+					root_node->val, ref_node->val);
+			ret = iterate_leaf_refs(fs_info, path, ref_node->val,
+						extent_item_objectid,
+						extent_item_pos, root_node->val,
+						iterate, ctx);
 		}
 	}
 
-	btrfs_release_path(path);
-
-	/*
-	 * ... only at the very end we can process the refs we found. this is
-	 * because the iterator function we call is allowed to make tree lookups
-	 * and we have to avoid deadlocks. additionally, we need more tree
-	 * lookups ourselves for shared data refs.
-	 */
-	while (!list_empty(&data_refs)) {
-		ref_d = list_first_entry(&data_refs, struct __data_ref, list);
-		list_del(&ref_d->list);
-		if (!ret)
-			ret = iterate(ref_d->inum, extent_offset +
-					ref_d->extent_data_item_offset,
-					ref_d->root, ctx);
-		kfree(ref_d);
-	}
-
-	while (!list_empty(&shared_refs)) {
-		ref_s = list_first_entry(&shared_refs, struct __shared_ref,
-					list);
-		list_del(&ref_s->list);
-		if (!ret)
-			ret = __iter_shared_inline_ref(fs_info,
-							ref_s->disk_byte,
-							extent_item_objectid,
-							extent_offset, path,
-							&data_refs,
-							iterate, ctx);
-		kfree(ref_s);
-	}
-
+	ulist_free(refs);
+	ulist_free(roots);
+out:
+	btrfs_put_delayed_seq(delayed_refs, &seq_elem);
+	btrfs_end_transaction(trans, fs_info->extent_root);
 	return ret;
 }
 
@@ -586,19 +1202,20 @@
 				iterate_extent_inodes_t *iterate, void *ctx)
 {
 	int ret;
-	u64 offset;
+	u64 extent_item_pos;
 	struct btrfs_key found_key;
 
 	ret = extent_from_logical(fs_info, logical, path,
 					&found_key);
+	btrfs_release_path(path);
 	if (ret & BTRFS_EXTENT_FLAG_TREE_BLOCK)
 		ret = -EINVAL;
 	if (ret < 0)
 		return ret;
 
-	offset = logical - found_key.objectid;
+	extent_item_pos = logical - found_key.objectid;
 	ret = iterate_extent_inodes(fs_info, path, found_key.objectid,
-					offset, iterate, ctx);
+					extent_item_pos, iterate, ctx);
 
 	return ret;
 }
@@ -643,6 +1260,10 @@
 		for (cur = 0; cur < btrfs_item_size(eb, item); cur += len) {
 			name_len = btrfs_inode_ref_name_len(eb, iref);
 			/* path must be released before calling iterate()! */
+			pr_debug("following ref at offset %u for inode %llu in "
+				 "tree %llu\n", cur,
+				 (unsigned long long)found_key.objectid,
+				 (unsigned long long)fs_root->objectid);
 			ret = iterate(parent, iref, eb, ctx);
 			if (ret) {
 				free_extent_buffer(eb);
@@ -683,10 +1304,14 @@
 		return PTR_ERR(fspath);
 
 	if (fspath > fspath_min) {
+		pr_debug("path resolved: %s\n", fspath);
 		ipath->fspath->val[i] = (u64)(unsigned long)fspath;
 		++ipath->fspath->elem_cnt;
 		ipath->fspath->bytes_left = fspath - fspath_min;
 	} else {
+		pr_debug("missed path, not enough space. missing bytes: %lu, "
+			 "constructed so far: %s\n",
+			 (unsigned long)(fspath_min - fspath), fspath_min);
 		++ipath->fspath->elem_missed;
 		ipath->fspath->bytes_missing += fspath_min - fspath;
 		ipath->fspath->bytes_left = 0;
diff --git a/fs/btrfs/backref.h b/fs/btrfs/backref.h
index 9261883..d00dfa9 100644
--- a/fs/btrfs/backref.h
+++ b/fs/btrfs/backref.h
@@ -20,6 +20,7 @@
 #define __BTRFS_BACKREF__
 
 #include "ioctl.h"
+#include "ulist.h"
 
 struct inode_fs_paths {
 	struct btrfs_path		*btrfs_path;
@@ -54,6 +55,10 @@
 
 int paths_from_inode(u64 inum, struct inode_fs_paths *ipath);
 
+int btrfs_find_all_roots(struct btrfs_trans_handle *trans,
+				struct btrfs_fs_info *fs_info, u64 bytenr,
+				u64 num_bytes, u64 seq, struct ulist **roots);
+
 struct btrfs_data_container *init_data_container(u32 total_bytes);
 struct inode_fs_paths *init_ipath(s32 total_bytes, struct btrfs_root *fs_root,
 					struct btrfs_path *path);
diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h
index 634608d..9b9b15f 100644
--- a/fs/btrfs/btrfs_inode.h
+++ b/fs/btrfs/btrfs_inode.h
@@ -51,6 +51,9 @@
 	/* held while logging the inode in tree-log.c */
 	struct mutex log_mutex;
 
+	/* held while doing delalloc reservations */
+	struct mutex delalloc_mutex;
+
 	/* used to order data wrt metadata */
 	struct btrfs_ordered_inode_tree ordered_tree;
 
diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c
new file mode 100644
index 0000000..ad0b3ba
--- /dev/null
+++ b/fs/btrfs/check-integrity.c
@@ -0,0 +1,3068 @@
+/*
+ * Copyright (C) STRATO AG 2011.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License v2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 021110-1307, USA.
+ */
+
+/*
+ * This module can be used to catch cases when the btrfs kernel
+ * code executes write requests to the disk that bring the file
+ * system in an inconsistent state. In such a state, a power-loss
+ * or kernel panic event would cause that the data on disk is
+ * lost or at least damaged.
+ *
+ * Code is added that examines all block write requests during
+ * runtime (including writes of the super block). Three rules
+ * are verified and an error is printed on violation of the
+ * rules:
+ * 1. It is not allowed to write a disk block which is
+ *    currently referenced by the super block (either directly
+ *    or indirectly).
+ * 2. When a super block is written, it is verified that all
+ *    referenced (directly or indirectly) blocks fulfill the
+ *    following requirements:
+ *    2a. All referenced blocks have either been present when
+ *        the file system was mounted, (i.e., they have been
+ *        referenced by the super block) or they have been
+ *        written since then and the write completion callback
+ *        was called and a FLUSH request to the device where
+ *        these blocks are located was received and completed.
+ *    2b. All referenced blocks need to have a generation
+ *        number which is equal to the parent's number.
+ *
+ * One issue that was found using this module was that the log
+ * tree on disk became temporarily corrupted because disk blocks
+ * that had been in use for the log tree had been freed and
+ * reused too early, while being referenced by the written super
+ * block.
+ *
+ * The search term in the kernel log that can be used to filter
+ * on the existence of detected integrity issues is
+ * "btrfs: attempt".
+ *
+ * The integrity check is enabled via mount options. These
+ * mount options are only supported if the integrity check
+ * tool is compiled by defining BTRFS_FS_CHECK_INTEGRITY.
+ *
+ * Example #1, apply integrity checks to all metadata:
+ * mount /dev/sdb1 /mnt -o check_int
+ *
+ * Example #2, apply integrity checks to all metadata and
+ * to data extents:
+ * mount /dev/sdb1 /mnt -o check_int_data
+ *
+ * Example #3, apply integrity checks to all metadata and dump
+ * the tree that the super block references to kernel messages
+ * each time after a super block was written:
+ * mount /dev/sdb1 /mnt -o check_int,check_int_print_mask=263
+ *
+ * If the integrity check tool is included and activated in
+ * the mount options, plenty of kernel memory is used, and
+ * plenty of additional CPU cycles are spent. Enabling this
+ * functionality is not intended for normal use. In most
+ * cases, unless you are a btrfs developer who needs to verify
+ * the integrity of (super)-block write requests, do not
+ * enable the config option BTRFS_FS_CHECK_INTEGRITY to
+ * include and compile the integrity check tool.
+ */
+
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/buffer_head.h>
+#include <linux/mutex.h>
+#include <linux/crc32c.h>
+#include <linux/genhd.h>
+#include <linux/blkdev.h>
+#include "ctree.h"
+#include "disk-io.h"
+#include "transaction.h"
+#include "extent_io.h"
+#include "disk-io.h"
+#include "volumes.h"
+#include "print-tree.h"
+#include "locking.h"
+#include "check-integrity.h"
+
+#define BTRFSIC_BLOCK_HASHTABLE_SIZE 0x10000
+#define BTRFSIC_BLOCK_LINK_HASHTABLE_SIZE 0x10000
+#define BTRFSIC_DEV2STATE_HASHTABLE_SIZE 0x100
+#define BTRFSIC_BLOCK_MAGIC_NUMBER 0x14491051
+#define BTRFSIC_BLOCK_LINK_MAGIC_NUMBER 0x11070807
+#define BTRFSIC_DEV2STATE_MAGIC_NUMBER 0x20111530
+#define BTRFSIC_BLOCK_STACK_FRAME_MAGIC_NUMBER 20111300
+#define BTRFSIC_TREE_DUMP_MAX_INDENT_LEVEL (200 - 6)	/* in characters,
+							 * excluding " [...]" */
+#define BTRFSIC_BLOCK_SIZE PAGE_SIZE
+
+#define BTRFSIC_GENERATION_UNKNOWN ((u64)-1)
+
+/*
+ * The definition of the bitmask fields for the print_mask.
+ * They are specified with the mount option check_integrity_print_mask.
+ */
+#define BTRFSIC_PRINT_MASK_SUPERBLOCK_WRITE			0x00000001
+#define BTRFSIC_PRINT_MASK_ROOT_CHUNK_LOG_TREE_LOCATION		0x00000002
+#define BTRFSIC_PRINT_MASK_TREE_AFTER_SB_WRITE			0x00000004
+#define BTRFSIC_PRINT_MASK_TREE_BEFORE_SB_WRITE			0x00000008
+#define BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH			0x00000010
+#define BTRFSIC_PRINT_MASK_END_IO_BIO_BH			0x00000020
+#define BTRFSIC_PRINT_MASK_VERBOSE				0x00000040
+#define BTRFSIC_PRINT_MASK_VERY_VERBOSE				0x00000080
+#define BTRFSIC_PRINT_MASK_INITIAL_TREE				0x00000100
+#define BTRFSIC_PRINT_MASK_INITIAL_ALL_TREES			0x00000200
+#define BTRFSIC_PRINT_MASK_INITIAL_DATABASE			0x00000400
+#define BTRFSIC_PRINT_MASK_NUM_COPIES				0x00000800
+#define BTRFSIC_PRINT_MASK_TREE_WITH_ALL_MIRRORS		0x00001000
+
+struct btrfsic_dev_state;
+struct btrfsic_state;
+
+struct btrfsic_block {
+	u32 magic_num;		/* only used for debug purposes */
+	unsigned int is_metadata:1;	/* if it is meta-data, not data-data */
+	unsigned int is_superblock:1;	/* if it is one of the superblocks */
+	unsigned int is_iodone:1;	/* if is done by lower subsystem */
+	unsigned int iodone_w_error:1;	/* error was indicated to endio */
+	unsigned int never_written:1;	/* block was added because it was
+					 * referenced, not because it was
+					 * written */
+	unsigned int mirror_num:2;	/* large enough to hold
+					 * BTRFS_SUPER_MIRROR_MAX */
+	struct btrfsic_dev_state *dev_state;
+	u64 dev_bytenr;		/* key, physical byte num on disk */
+	u64 logical_bytenr;	/* logical byte num on disk */
+	u64 generation;
+	struct btrfs_disk_key disk_key;	/* extra info to print in case of
+					 * issues, will not always be correct */
+	struct list_head collision_resolving_node;	/* list node */
+	struct list_head all_blocks_node;	/* list node */
+
+	/* the following two lists contain block_link items */
+	struct list_head ref_to_list;	/* list */
+	struct list_head ref_from_list;	/* list */
+	struct btrfsic_block *next_in_same_bio;
+	void *orig_bio_bh_private;
+	union {
+		bio_end_io_t *bio;
+		bh_end_io_t *bh;
+	} orig_bio_bh_end_io;
+	int submit_bio_bh_rw;
+	u64 flush_gen; /* only valid if !never_written */
+};
+
+/*
+ * Elements of this type are allocated dynamically and required because
+ * each block object can refer to and can be ref from multiple blocks.
+ * The key to lookup them in the hashtable is the dev_bytenr of
+ * the block ref to plus the one from the block refered from.
+ * The fact that they are searchable via a hashtable and that a
+ * ref_cnt is maintained is not required for the btrfs integrity
+ * check algorithm itself, it is only used to make the output more
+ * beautiful in case that an error is detected (an error is defined
+ * as a write operation to a block while that block is still referenced).
+ */
+struct btrfsic_block_link {
+	u32 magic_num;		/* only used for debug purposes */
+	u32 ref_cnt;
+	struct list_head node_ref_to;	/* list node */
+	struct list_head node_ref_from;	/* list node */
+	struct list_head collision_resolving_node;	/* list node */
+	struct btrfsic_block *block_ref_to;
+	struct btrfsic_block *block_ref_from;
+	u64 parent_generation;
+};
+
+struct btrfsic_dev_state {
+	u32 magic_num;		/* only used for debug purposes */
+	struct block_device *bdev;
+	struct btrfsic_state *state;
+	struct list_head collision_resolving_node;	/* list node */
+	struct btrfsic_block dummy_block_for_bio_bh_flush;
+	u64 last_flush_gen;
+	char name[BDEVNAME_SIZE];
+};
+
+struct btrfsic_block_hashtable {
+	struct list_head table[BTRFSIC_BLOCK_HASHTABLE_SIZE];
+};
+
+struct btrfsic_block_link_hashtable {
+	struct list_head table[BTRFSIC_BLOCK_LINK_HASHTABLE_SIZE];
+};
+
+struct btrfsic_dev_state_hashtable {
+	struct list_head table[BTRFSIC_DEV2STATE_HASHTABLE_SIZE];
+};
+
+struct btrfsic_block_data_ctx {
+	u64 start;		/* virtual bytenr */
+	u64 dev_bytenr;		/* physical bytenr on device */
+	u32 len;
+	struct btrfsic_dev_state *dev;
+	char *data;
+	struct buffer_head *bh;	/* do not use if set to NULL */
+};
+
+/* This structure is used to implement recursion without occupying
+ * any stack space, refer to btrfsic_process_metablock() */
+struct btrfsic_stack_frame {
+	u32 magic;
+	u32 nr;
+	int error;
+	int i;
+	int limit_nesting;
+	int num_copies;
+	int mirror_num;
+	struct btrfsic_block *block;
+	struct btrfsic_block_data_ctx *block_ctx;
+	struct btrfsic_block *next_block;
+	struct btrfsic_block_data_ctx next_block_ctx;
+	struct btrfs_header *hdr;
+	struct btrfsic_stack_frame *prev;
+};
+
+/* Some state per mounted filesystem */
+struct btrfsic_state {
+	u32 print_mask;
+	int include_extent_data;
+	int csum_size;
+	struct list_head all_blocks_list;
+	struct btrfsic_block_hashtable block_hashtable;
+	struct btrfsic_block_link_hashtable block_link_hashtable;
+	struct btrfs_root *root;
+	u64 max_superblock_generation;
+	struct btrfsic_block *latest_superblock;
+};
+
+static void btrfsic_block_init(struct btrfsic_block *b);
+static struct btrfsic_block *btrfsic_block_alloc(void);
+static void btrfsic_block_free(struct btrfsic_block *b);
+static void btrfsic_block_link_init(struct btrfsic_block_link *n);
+static struct btrfsic_block_link *btrfsic_block_link_alloc(void);
+static void btrfsic_block_link_free(struct btrfsic_block_link *n);
+static void btrfsic_dev_state_init(struct btrfsic_dev_state *ds);
+static struct btrfsic_dev_state *btrfsic_dev_state_alloc(void);
+static void btrfsic_dev_state_free(struct btrfsic_dev_state *ds);
+static void btrfsic_block_hashtable_init(struct btrfsic_block_hashtable *h);
+static void btrfsic_block_hashtable_add(struct btrfsic_block *b,
+					struct btrfsic_block_hashtable *h);
+static void btrfsic_block_hashtable_remove(struct btrfsic_block *b);
+static struct btrfsic_block *btrfsic_block_hashtable_lookup(
+		struct block_device *bdev,
+		u64 dev_bytenr,
+		struct btrfsic_block_hashtable *h);
+static void btrfsic_block_link_hashtable_init(
+		struct btrfsic_block_link_hashtable *h);
+static void btrfsic_block_link_hashtable_add(
+		struct btrfsic_block_link *l,
+		struct btrfsic_block_link_hashtable *h);
+static void btrfsic_block_link_hashtable_remove(struct btrfsic_block_link *l);
+static struct btrfsic_block_link *btrfsic_block_link_hashtable_lookup(
+		struct block_device *bdev_ref_to,
+		u64 dev_bytenr_ref_to,
+		struct block_device *bdev_ref_from,
+		u64 dev_bytenr_ref_from,
+		struct btrfsic_block_link_hashtable *h);
+static void btrfsic_dev_state_hashtable_init(
+		struct btrfsic_dev_state_hashtable *h);
+static void btrfsic_dev_state_hashtable_add(
+		struct btrfsic_dev_state *ds,
+		struct btrfsic_dev_state_hashtable *h);
+static void btrfsic_dev_state_hashtable_remove(struct btrfsic_dev_state *ds);
+static struct btrfsic_dev_state *btrfsic_dev_state_hashtable_lookup(
+		struct block_device *bdev,
+		struct btrfsic_dev_state_hashtable *h);
+static struct btrfsic_stack_frame *btrfsic_stack_frame_alloc(void);
+static void btrfsic_stack_frame_free(struct btrfsic_stack_frame *sf);
+static int btrfsic_process_superblock(struct btrfsic_state *state,
+				      struct btrfs_fs_devices *fs_devices);
+static int btrfsic_process_metablock(struct btrfsic_state *state,
+				     struct btrfsic_block *block,
+				     struct btrfsic_block_data_ctx *block_ctx,
+				     struct btrfs_header *hdr,
+				     int limit_nesting, int force_iodone_flag);
+static int btrfsic_create_link_to_next_block(
+		struct btrfsic_state *state,
+		struct btrfsic_block *block,
+		struct btrfsic_block_data_ctx
+		*block_ctx, u64 next_bytenr,
+		int limit_nesting,
+		struct btrfsic_block_data_ctx *next_block_ctx,
+		struct btrfsic_block **next_blockp,
+		int force_iodone_flag,
+		int *num_copiesp, int *mirror_nump,
+		struct btrfs_disk_key *disk_key,
+		u64 parent_generation);
+static int btrfsic_handle_extent_data(struct btrfsic_state *state,
+				      struct btrfsic_block *block,
+				      struct btrfsic_block_data_ctx *block_ctx,
+				      u32 item_offset, int force_iodone_flag);
+static int btrfsic_map_block(struct btrfsic_state *state, u64 bytenr, u32 len,
+			     struct btrfsic_block_data_ctx *block_ctx_out,
+			     int mirror_num);
+static int btrfsic_map_superblock(struct btrfsic_state *state, u64 bytenr,
+				  u32 len, struct block_device *bdev,
+				  struct btrfsic_block_data_ctx *block_ctx_out);
+static void btrfsic_release_block_ctx(struct btrfsic_block_data_ctx *block_ctx);
+static int btrfsic_read_block(struct btrfsic_state *state,
+			      struct btrfsic_block_data_ctx *block_ctx);
+static void btrfsic_dump_database(struct btrfsic_state *state);
+static int btrfsic_test_for_metadata(struct btrfsic_state *state,
+				     const u8 *data, unsigned int size);
+static void btrfsic_process_written_block(struct btrfsic_dev_state *dev_state,
+					  u64 dev_bytenr, u8 *mapped_data,
+					  unsigned int len, struct bio *bio,
+					  int *bio_is_patched,
+					  struct buffer_head *bh,
+					  int submit_bio_bh_rw);
+static int btrfsic_process_written_superblock(
+		struct btrfsic_state *state,
+		struct btrfsic_block *const block,
+		struct btrfs_super_block *const super_hdr);
+static void btrfsic_bio_end_io(struct bio *bp, int bio_error_status);
+static void btrfsic_bh_end_io(struct buffer_head *bh, int uptodate);
+static int btrfsic_is_block_ref_by_superblock(const struct btrfsic_state *state,
+					      const struct btrfsic_block *block,
+					      int recursion_level);
+static int btrfsic_check_all_ref_blocks(struct btrfsic_state *state,
+					struct btrfsic_block *const block,
+					int recursion_level);
+static void btrfsic_print_add_link(const struct btrfsic_state *state,
+				   const struct btrfsic_block_link *l);
+static void btrfsic_print_rem_link(const struct btrfsic_state *state,
+				   const struct btrfsic_block_link *l);
+static char btrfsic_get_block_type(const struct btrfsic_state *state,
+				   const struct btrfsic_block *block);
+static void btrfsic_dump_tree(const struct btrfsic_state *state);
+static void btrfsic_dump_tree_sub(const struct btrfsic_state *state,
+				  const struct btrfsic_block *block,
+				  int indent_level);
+static struct btrfsic_block_link *btrfsic_block_link_lookup_or_add(
+		struct btrfsic_state *state,
+		struct btrfsic_block_data_ctx *next_block_ctx,
+		struct btrfsic_block *next_block,
+		struct btrfsic_block *from_block,
+		u64 parent_generation);
+static struct btrfsic_block *btrfsic_block_lookup_or_add(
+		struct btrfsic_state *state,
+		struct btrfsic_block_data_ctx *block_ctx,
+		const char *additional_string,
+		int is_metadata,
+		int is_iodone,
+		int never_written,
+		int mirror_num,
+		int *was_created);
+static int btrfsic_process_superblock_dev_mirror(
+		struct btrfsic_state *state,
+		struct btrfsic_dev_state *dev_state,
+		struct btrfs_device *device,
+		int superblock_mirror_num,
+		struct btrfsic_dev_state **selected_dev_state,
+		struct btrfs_super_block *selected_super);
+static struct btrfsic_dev_state *btrfsic_dev_state_lookup(
+		struct block_device *bdev);
+static void btrfsic_cmp_log_and_dev_bytenr(struct btrfsic_state *state,
+					   u64 bytenr,
+					   struct btrfsic_dev_state *dev_state,
+					   u64 dev_bytenr, char *data);
+
+static struct mutex btrfsic_mutex;
+static int btrfsic_is_initialized;
+static struct btrfsic_dev_state_hashtable btrfsic_dev_state_hashtable;
+
+
+static void btrfsic_block_init(struct btrfsic_block *b)
+{
+	b->magic_num = BTRFSIC_BLOCK_MAGIC_NUMBER;
+	b->dev_state = NULL;
+	b->dev_bytenr = 0;
+	b->logical_bytenr = 0;
+	b->generation = BTRFSIC_GENERATION_UNKNOWN;
+	b->disk_key.objectid = 0;
+	b->disk_key.type = 0;
+	b->disk_key.offset = 0;
+	b->is_metadata = 0;
+	b->is_superblock = 0;
+	b->is_iodone = 0;
+	b->iodone_w_error = 0;
+	b->never_written = 0;
+	b->mirror_num = 0;
+	b->next_in_same_bio = NULL;
+	b->orig_bio_bh_private = NULL;
+	b->orig_bio_bh_end_io.bio = NULL;
+	INIT_LIST_HEAD(&b->collision_resolving_node);
+	INIT_LIST_HEAD(&b->all_blocks_node);
+	INIT_LIST_HEAD(&b->ref_to_list);
+	INIT_LIST_HEAD(&b->ref_from_list);
+	b->submit_bio_bh_rw = 0;
+	b->flush_gen = 0;
+}
+
+static struct btrfsic_block *btrfsic_block_alloc(void)
+{
+	struct btrfsic_block *b;
+
+	b = kzalloc(sizeof(*b), GFP_NOFS);
+	if (NULL != b)
+		btrfsic_block_init(b);
+
+	return b;
+}
+
+static void btrfsic_block_free(struct btrfsic_block *b)
+{
+	BUG_ON(!(NULL == b || BTRFSIC_BLOCK_MAGIC_NUMBER == b->magic_num));
+	kfree(b);
+}
+
+static void btrfsic_block_link_init(struct btrfsic_block_link *l)
+{
+	l->magic_num = BTRFSIC_BLOCK_LINK_MAGIC_NUMBER;
+	l->ref_cnt = 1;
+	INIT_LIST_HEAD(&l->node_ref_to);
+	INIT_LIST_HEAD(&l->node_ref_from);
+	INIT_LIST_HEAD(&l->collision_resolving_node);
+	l->block_ref_to = NULL;
+	l->block_ref_from = NULL;
+}
+
+static struct btrfsic_block_link *btrfsic_block_link_alloc(void)
+{
+	struct btrfsic_block_link *l;
+
+	l = kzalloc(sizeof(*l), GFP_NOFS);
+	if (NULL != l)
+		btrfsic_block_link_init(l);
+
+	return l;
+}
+
+static void btrfsic_block_link_free(struct btrfsic_block_link *l)
+{
+	BUG_ON(!(NULL == l || BTRFSIC_BLOCK_LINK_MAGIC_NUMBER == l->magic_num));
+	kfree(l);
+}
+
+static void btrfsic_dev_state_init(struct btrfsic_dev_state *ds)
+{
+	ds->magic_num = BTRFSIC_DEV2STATE_MAGIC_NUMBER;
+	ds->bdev = NULL;
+	ds->state = NULL;
+	ds->name[0] = '\0';
+	INIT_LIST_HEAD(&ds->collision_resolving_node);
+	ds->last_flush_gen = 0;
+	btrfsic_block_init(&ds->dummy_block_for_bio_bh_flush);
+	ds->dummy_block_for_bio_bh_flush.is_iodone = 1;
+	ds->dummy_block_for_bio_bh_flush.dev_state = ds;
+}
+
+static struct btrfsic_dev_state *btrfsic_dev_state_alloc(void)
+{
+	struct btrfsic_dev_state *ds;
+
+	ds = kzalloc(sizeof(*ds), GFP_NOFS);
+	if (NULL != ds)
+		btrfsic_dev_state_init(ds);
+
+	return ds;
+}
+
+static void btrfsic_dev_state_free(struct btrfsic_dev_state *ds)
+{
+	BUG_ON(!(NULL == ds ||
+		 BTRFSIC_DEV2STATE_MAGIC_NUMBER == ds->magic_num));
+	kfree(ds);
+}
+
+static void btrfsic_block_hashtable_init(struct btrfsic_block_hashtable *h)
+{
+	int i;
+
+	for (i = 0; i < BTRFSIC_BLOCK_HASHTABLE_SIZE; i++)
+		INIT_LIST_HEAD(h->table + i);
+}
+
+static void btrfsic_block_hashtable_add(struct btrfsic_block *b,
+					struct btrfsic_block_hashtable *h)
+{
+	const unsigned int hashval =
+	    (((unsigned int)(b->dev_bytenr >> 16)) ^
+	     ((unsigned int)((uintptr_t)b->dev_state->bdev))) &
+	     (BTRFSIC_BLOCK_HASHTABLE_SIZE - 1);
+
+	list_add(&b->collision_resolving_node, h->table + hashval);
+}
+
+static void btrfsic_block_hashtable_remove(struct btrfsic_block *b)
+{
+	list_del(&b->collision_resolving_node);
+}
+
+static struct btrfsic_block *btrfsic_block_hashtable_lookup(
+		struct block_device *bdev,
+		u64 dev_bytenr,
+		struct btrfsic_block_hashtable *h)
+{
+	const unsigned int hashval =
+	    (((unsigned int)(dev_bytenr >> 16)) ^
+	     ((unsigned int)((uintptr_t)bdev))) &
+	     (BTRFSIC_BLOCK_HASHTABLE_SIZE - 1);
+	struct list_head *elem;
+
+	list_for_each(elem, h->table + hashval) {
+		struct btrfsic_block *const b =
+		    list_entry(elem, struct btrfsic_block,
+			       collision_resolving_node);
+
+		if (b->dev_state->bdev == bdev && b->dev_bytenr == dev_bytenr)
+			return b;
+	}
+
+	return NULL;
+}
+
+static void btrfsic_block_link_hashtable_init(
+		struct btrfsic_block_link_hashtable *h)
+{
+	int i;
+
+	for (i = 0; i < BTRFSIC_BLOCK_LINK_HASHTABLE_SIZE; i++)
+		INIT_LIST_HEAD(h->table + i);
+}
+
+static void btrfsic_block_link_hashtable_add(
+		struct btrfsic_block_link *l,
+		struct btrfsic_block_link_hashtable *h)
+{
+	const unsigned int hashval =
+	    (((unsigned int)(l->block_ref_to->dev_bytenr >> 16)) ^
+	     ((unsigned int)(l->block_ref_from->dev_bytenr >> 16)) ^
+	     ((unsigned int)((uintptr_t)l->block_ref_to->dev_state->bdev)) ^
+	     ((unsigned int)((uintptr_t)l->block_ref_from->dev_state->bdev)))
+	     & (BTRFSIC_BLOCK_LINK_HASHTABLE_SIZE - 1);
+
+	BUG_ON(NULL == l->block_ref_to);
+	BUG_ON(NULL == l->block_ref_from);
+	list_add(&l->collision_resolving_node, h->table + hashval);
+}
+
+static void btrfsic_block_link_hashtable_remove(struct btrfsic_block_link *l)
+{
+	list_del(&l->collision_resolving_node);
+}
+
+static struct btrfsic_block_link *btrfsic_block_link_hashtable_lookup(
+		struct block_device *bdev_ref_to,
+		u64 dev_bytenr_ref_to,
+		struct block_device *bdev_ref_from,
+		u64 dev_bytenr_ref_from,
+		struct btrfsic_block_link_hashtable *h)
+{
+	const unsigned int hashval =
+	    (((unsigned int)(dev_bytenr_ref_to >> 16)) ^
+	     ((unsigned int)(dev_bytenr_ref_from >> 16)) ^
+	     ((unsigned int)((uintptr_t)bdev_ref_to)) ^
+	     ((unsigned int)((uintptr_t)bdev_ref_from))) &
+	     (BTRFSIC_BLOCK_LINK_HASHTABLE_SIZE - 1);
+	struct list_head *elem;
+
+	list_for_each(elem, h->table + hashval) {
+		struct btrfsic_block_link *const l =
+		    list_entry(elem, struct btrfsic_block_link,
+			       collision_resolving_node);
+
+		BUG_ON(NULL == l->block_ref_to);
+		BUG_ON(NULL == l->block_ref_from);
+		if (l->block_ref_to->dev_state->bdev == bdev_ref_to &&
+		    l->block_ref_to->dev_bytenr == dev_bytenr_ref_to &&
+		    l->block_ref_from->dev_state->bdev == bdev_ref_from &&
+		    l->block_ref_from->dev_bytenr == dev_bytenr_ref_from)
+			return l;
+	}
+
+	return NULL;
+}
+
+static void btrfsic_dev_state_hashtable_init(
+		struct btrfsic_dev_state_hashtable *h)
+{
+	int i;
+
+	for (i = 0; i < BTRFSIC_DEV2STATE_HASHTABLE_SIZE; i++)
+		INIT_LIST_HEAD(h->table + i);
+}
+
+static void btrfsic_dev_state_hashtable_add(
+		struct btrfsic_dev_state *ds,
+		struct btrfsic_dev_state_hashtable *h)
+{
+	const unsigned int hashval =
+	    (((unsigned int)((uintptr_t)ds->bdev)) &
+	     (BTRFSIC_DEV2STATE_HASHTABLE_SIZE - 1));
+
+	list_add(&ds->collision_resolving_node, h->table + hashval);
+}
+
+static void btrfsic_dev_state_hashtable_remove(struct btrfsic_dev_state *ds)
+{
+	list_del(&ds->collision_resolving_node);
+}
+
+static struct btrfsic_dev_state *btrfsic_dev_state_hashtable_lookup(
+		struct block_device *bdev,
+		struct btrfsic_dev_state_hashtable *h)
+{
+	const unsigned int hashval =
+	    (((unsigned int)((uintptr_t)bdev)) &
+	     (BTRFSIC_DEV2STATE_HASHTABLE_SIZE - 1));
+	struct list_head *elem;
+
+	list_for_each(elem, h->table + hashval) {
+		struct btrfsic_dev_state *const ds =
+		    list_entry(elem, struct btrfsic_dev_state,
+			       collision_resolving_node);
+
+		if (ds->bdev == bdev)
+			return ds;
+	}
+
+	return NULL;
+}
+
+static int btrfsic_process_superblock(struct btrfsic_state *state,
+				      struct btrfs_fs_devices *fs_devices)
+{
+	int ret;
+	struct btrfs_super_block *selected_super;
+	struct list_head *dev_head = &fs_devices->devices;
+	struct btrfs_device *device;
+	struct btrfsic_dev_state *selected_dev_state = NULL;
+	int pass;
+
+	BUG_ON(NULL == state);
+	selected_super = kmalloc(sizeof(*selected_super), GFP_NOFS);
+	if (NULL == selected_super) {
+		printk(KERN_INFO "btrfsic: error, kmalloc failed!\n");
+		return -1;
+	}
+
+	list_for_each_entry(device, dev_head, dev_list) {
+		int i;
+		struct btrfsic_dev_state *dev_state;
+
+		if (!device->bdev || !device->name)
+			continue;
+
+		dev_state = btrfsic_dev_state_lookup(device->bdev);
+		BUG_ON(NULL == dev_state);
+		for (i = 0; i < BTRFS_SUPER_MIRROR_MAX; i++) {
+			ret = btrfsic_process_superblock_dev_mirror(
+					state, dev_state, device, i,
+					&selected_dev_state, selected_super);
+			if (0 != ret && 0 == i) {
+				kfree(selected_super);
+				return ret;
+			}
+		}
+	}
+
+	if (NULL == state->latest_superblock) {
+		printk(KERN_INFO "btrfsic: no superblock found!\n");
+		kfree(selected_super);
+		return -1;
+	}
+
+	state->csum_size = btrfs_super_csum_size(selected_super);
+
+	for (pass = 0; pass < 3; pass++) {
+		int num_copies;
+		int mirror_num;
+		u64 next_bytenr;
+
+		switch (pass) {
+		case 0:
+			next_bytenr = btrfs_super_root(selected_super);
+			if (state->print_mask &
+			    BTRFSIC_PRINT_MASK_ROOT_CHUNK_LOG_TREE_LOCATION)
+				printk(KERN_INFO "root@%llu\n",
+				       (unsigned long long)next_bytenr);
+			break;
+		case 1:
+			next_bytenr = btrfs_super_chunk_root(selected_super);
+			if (state->print_mask &
+			    BTRFSIC_PRINT_MASK_ROOT_CHUNK_LOG_TREE_LOCATION)
+				printk(KERN_INFO "chunk@%llu\n",
+				       (unsigned long long)next_bytenr);
+			break;
+		case 2:
+			next_bytenr = btrfs_super_log_root(selected_super);
+			if (0 == next_bytenr)
+				continue;
+			if (state->print_mask &
+			    BTRFSIC_PRINT_MASK_ROOT_CHUNK_LOG_TREE_LOCATION)
+				printk(KERN_INFO "log@%llu\n",
+				       (unsigned long long)next_bytenr);
+			break;
+		}
+
+		num_copies =
+		    btrfs_num_copies(&state->root->fs_info->mapping_tree,
+				     next_bytenr, PAGE_SIZE);
+		if (state->print_mask & BTRFSIC_PRINT_MASK_NUM_COPIES)
+			printk(KERN_INFO "num_copies(log_bytenr=%llu) = %d\n",
+			       (unsigned long long)next_bytenr, num_copies);
+
+		for (mirror_num = 1; mirror_num <= num_copies; mirror_num++) {
+			struct btrfsic_block *next_block;
+			struct btrfsic_block_data_ctx tmp_next_block_ctx;
+			struct btrfsic_block_link *l;
+			struct btrfs_header *hdr;
+
+			ret = btrfsic_map_block(state, next_bytenr, PAGE_SIZE,
+						&tmp_next_block_ctx,
+						mirror_num);
+			if (ret) {
+				printk(KERN_INFO "btrfsic:"
+				       " btrfsic_map_block(root @%llu,"
+				       " mirror %d) failed!\n",
+				       (unsigned long long)next_bytenr,
+				       mirror_num);
+				kfree(selected_super);
+				return -1;
+			}
+
+			next_block = btrfsic_block_hashtable_lookup(
+					tmp_next_block_ctx.dev->bdev,
+					tmp_next_block_ctx.dev_bytenr,
+					&state->block_hashtable);
+			BUG_ON(NULL == next_block);
+
+			l = btrfsic_block_link_hashtable_lookup(
+					tmp_next_block_ctx.dev->bdev,
+					tmp_next_block_ctx.dev_bytenr,
+					state->latest_superblock->dev_state->
+					bdev,
+					state->latest_superblock->dev_bytenr,
+					&state->block_link_hashtable);
+			BUG_ON(NULL == l);
+
+			ret = btrfsic_read_block(state, &tmp_next_block_ctx);
+			if (ret < (int)BTRFSIC_BLOCK_SIZE) {
+				printk(KERN_INFO
+				       "btrfsic: read @logical %llu failed!\n",
+				       (unsigned long long)
+				       tmp_next_block_ctx.start);
+				btrfsic_release_block_ctx(&tmp_next_block_ctx);
+				kfree(selected_super);
+				return -1;
+			}
+
+			hdr = (struct btrfs_header *)tmp_next_block_ctx.data;
+			ret = btrfsic_process_metablock(state,
+							next_block,
+							&tmp_next_block_ctx,
+							hdr,
+							BTRFS_MAX_LEVEL + 3, 1);
+			btrfsic_release_block_ctx(&tmp_next_block_ctx);
+		}
+	}
+
+	kfree(selected_super);
+	return ret;
+}
+
+static int btrfsic_process_superblock_dev_mirror(
+		struct btrfsic_state *state,
+		struct btrfsic_dev_state *dev_state,
+		struct btrfs_device *device,
+		int superblock_mirror_num,
+		struct btrfsic_dev_state **selected_dev_state,
+		struct btrfs_super_block *selected_super)
+{
+	struct btrfs_super_block *super_tmp;
+	u64 dev_bytenr;
+	struct buffer_head *bh;
+	struct btrfsic_block *superblock_tmp;
+	int pass;
+	struct block_device *const superblock_bdev = device->bdev;
+
+	/* super block bytenr is always the unmapped device bytenr */
+	dev_bytenr = btrfs_sb_offset(superblock_mirror_num);
+	bh = __bread(superblock_bdev, dev_bytenr / 4096, 4096);
+	if (NULL == bh)
+		return -1;
+	super_tmp = (struct btrfs_super_block *)
+	    (bh->b_data + (dev_bytenr & 4095));
+
+	if (btrfs_super_bytenr(super_tmp) != dev_bytenr ||
+	    strncmp((char *)(&(super_tmp->magic)), BTRFS_MAGIC,
+		    sizeof(super_tmp->magic)) ||
+	    memcmp(device->uuid, super_tmp->dev_item.uuid, BTRFS_UUID_SIZE)) {
+		brelse(bh);
+		return 0;
+	}
+
+	superblock_tmp =
+	    btrfsic_block_hashtable_lookup(superblock_bdev,
+					   dev_bytenr,
+					   &state->block_hashtable);
+	if (NULL == superblock_tmp) {
+		superblock_tmp = btrfsic_block_alloc();
+		if (NULL == superblock_tmp) {
+			printk(KERN_INFO "btrfsic: error, kmalloc failed!\n");
+			brelse(bh);
+			return -1;
+		}
+		/* for superblock, only the dev_bytenr makes sense */
+		superblock_tmp->dev_bytenr = dev_bytenr;
+		superblock_tmp->dev_state = dev_state;
+		superblock_tmp->logical_bytenr = dev_bytenr;
+		superblock_tmp->generation = btrfs_super_generation(super_tmp);
+		superblock_tmp->is_metadata = 1;
+		superblock_tmp->is_superblock = 1;
+		superblock_tmp->is_iodone = 1;
+		superblock_tmp->never_written = 0;
+		superblock_tmp->mirror_num = 1 + superblock_mirror_num;
+		if (state->print_mask & BTRFSIC_PRINT_MASK_SUPERBLOCK_WRITE)
+			printk(KERN_INFO "New initial S-block (bdev %p, %s)"
+			       " @%llu (%s/%llu/%d)\n",
+			       superblock_bdev, device->name,
+			       (unsigned long long)dev_bytenr,
+			       dev_state->name,
+			       (unsigned long long)dev_bytenr,
+			       superblock_mirror_num);
+		list_add(&superblock_tmp->all_blocks_node,
+			 &state->all_blocks_list);
+		btrfsic_block_hashtable_add(superblock_tmp,
+					    &state->block_hashtable);
+	}
+
+	/* select the one with the highest generation field */
+	if (btrfs_super_generation(super_tmp) >
+	    state->max_superblock_generation ||
+	    0 == state->max_superblock_generation) {
+		memcpy(selected_super, super_tmp, sizeof(*selected_super));
+		*selected_dev_state = dev_state;
+		state->max_superblock_generation =
+		    btrfs_super_generation(super_tmp);
+		state->latest_superblock = superblock_tmp;
+	}
+
+	for (pass = 0; pass < 3; pass++) {
+		u64 next_bytenr;
+		int num_copies;
+		int mirror_num;
+		const char *additional_string = NULL;
+		struct btrfs_disk_key tmp_disk_key;
+
+		tmp_disk_key.type = BTRFS_ROOT_ITEM_KEY;
+		tmp_disk_key.offset = 0;
+		switch (pass) {
+		case 0:
+			tmp_disk_key.objectid =
+			    cpu_to_le64(BTRFS_ROOT_TREE_OBJECTID);
+			additional_string = "initial root ";
+			next_bytenr = btrfs_super_root(super_tmp);
+			break;
+		case 1:
+			tmp_disk_key.objectid =
+			    cpu_to_le64(BTRFS_CHUNK_TREE_OBJECTID);
+			additional_string = "initial chunk ";
+			next_bytenr = btrfs_super_chunk_root(super_tmp);
+			break;
+		case 2:
+			tmp_disk_key.objectid =
+			    cpu_to_le64(BTRFS_TREE_LOG_OBJECTID);
+			additional_string = "initial log ";
+			next_bytenr = btrfs_super_log_root(super_tmp);
+			if (0 == next_bytenr)
+				continue;
+			break;
+		}
+
+		num_copies =
+		    btrfs_num_copies(&state->root->fs_info->mapping_tree,
+				     next_bytenr, PAGE_SIZE);
+		if (state->print_mask & BTRFSIC_PRINT_MASK_NUM_COPIES)
+			printk(KERN_INFO "num_copies(log_bytenr=%llu) = %d\n",
+			       (unsigned long long)next_bytenr, num_copies);
+		for (mirror_num = 1; mirror_num <= num_copies; mirror_num++) {
+			struct btrfsic_block *next_block;
+			struct btrfsic_block_data_ctx tmp_next_block_ctx;
+			struct btrfsic_block_link *l;
+
+			if (btrfsic_map_block(state, next_bytenr, PAGE_SIZE,
+					      &tmp_next_block_ctx,
+					      mirror_num)) {
+				printk(KERN_INFO "btrfsic: btrfsic_map_block("
+				       "bytenr @%llu, mirror %d) failed!\n",
+				       (unsigned long long)next_bytenr,
+				       mirror_num);
+				brelse(bh);
+				return -1;
+			}
+
+			next_block = btrfsic_block_lookup_or_add(
+					state, &tmp_next_block_ctx,
+					additional_string, 1, 1, 0,
+					mirror_num, NULL);
+			if (NULL == next_block) {
+				btrfsic_release_block_ctx(&tmp_next_block_ctx);
+				brelse(bh);
+				return -1;
+			}
+
+			next_block->disk_key = tmp_disk_key;
+			next_block->generation = BTRFSIC_GENERATION_UNKNOWN;
+			l = btrfsic_block_link_lookup_or_add(
+					state, &tmp_next_block_ctx,
+					next_block, superblock_tmp,
+					BTRFSIC_GENERATION_UNKNOWN);
+			btrfsic_release_block_ctx(&tmp_next_block_ctx);
+			if (NULL == l) {
+				brelse(bh);
+				return -1;
+			}
+		}
+	}
+	if (state->print_mask & BTRFSIC_PRINT_MASK_INITIAL_ALL_TREES)
+		btrfsic_dump_tree_sub(state, superblock_tmp, 0);
+
+	brelse(bh);
+	return 0;
+}
+
+static struct btrfsic_stack_frame *btrfsic_stack_frame_alloc(void)
+{
+	struct btrfsic_stack_frame *sf;
+
+	sf = kzalloc(sizeof(*sf), GFP_NOFS);
+	if (NULL == sf)
+		printk(KERN_INFO "btrfsic: alloc memory failed!\n");
+	else
+		sf->magic = BTRFSIC_BLOCK_STACK_FRAME_MAGIC_NUMBER;
+	return sf;
+}
+
+static void btrfsic_stack_frame_free(struct btrfsic_stack_frame *sf)
+{
+	BUG_ON(!(NULL == sf ||
+		 BTRFSIC_BLOCK_STACK_FRAME_MAGIC_NUMBER == sf->magic));
+	kfree(sf);
+}
+
+static int btrfsic_process_metablock(
+		struct btrfsic_state *state,
+		struct btrfsic_block *const first_block,
+		struct btrfsic_block_data_ctx *const first_block_ctx,
+		struct btrfs_header *const first_hdr,
+		int first_limit_nesting, int force_iodone_flag)
+{
+	struct btrfsic_stack_frame initial_stack_frame = { 0 };
+	struct btrfsic_stack_frame *sf;
+	struct btrfsic_stack_frame *next_stack;
+
+	sf = &initial_stack_frame;
+	sf->error = 0;
+	sf->i = -1;
+	sf->limit_nesting = first_limit_nesting;
+	sf->block = first_block;
+	sf->block_ctx = first_block_ctx;
+	sf->next_block = NULL;
+	sf->hdr = first_hdr;
+	sf->prev = NULL;
+
+continue_with_new_stack_frame:
+	sf->block->generation = le64_to_cpu(sf->hdr->generation);
+	if (0 == sf->hdr->level) {
+		struct btrfs_leaf *const leafhdr =
+		    (struct btrfs_leaf *)sf->hdr;
+
+		if (-1 == sf->i) {
+			sf->nr = le32_to_cpu(leafhdr->header.nritems);
+
+			if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
+				printk(KERN_INFO
+				       "leaf %llu items %d generation %llu"
+				       " owner %llu\n",
+				       (unsigned long long)
+				       sf->block_ctx->start,
+				       sf->nr,
+				       (unsigned long long)
+				       le64_to_cpu(leafhdr->header.generation),
+				       (unsigned long long)
+				       le64_to_cpu(leafhdr->header.owner));
+		}
+
+continue_with_current_leaf_stack_frame:
+		if (0 == sf->num_copies || sf->mirror_num > sf->num_copies) {
+			sf->i++;
+			sf->num_copies = 0;
+		}
+
+		if (sf->i < sf->nr) {
+			struct btrfs_item *disk_item = leafhdr->items + sf->i;
+			struct btrfs_disk_key *disk_key = &disk_item->key;
+			u8 type;
+			const u32 item_offset = le32_to_cpu(disk_item->offset);
+
+			type = disk_key->type;
+
+			if (BTRFS_ROOT_ITEM_KEY == type) {
+				const struct btrfs_root_item *const root_item =
+				    (struct btrfs_root_item *)
+				    (sf->block_ctx->data +
+				     offsetof(struct btrfs_leaf, items) +
+				     item_offset);
+				const u64 next_bytenr =
+				    le64_to_cpu(root_item->bytenr);
+
+				sf->error =
+				    btrfsic_create_link_to_next_block(
+						state,
+						sf->block,
+						sf->block_ctx,
+						next_bytenr,
+						sf->limit_nesting,
+						&sf->next_block_ctx,
+						&sf->next_block,
+						force_iodone_flag,
+						&sf->num_copies,
+						&sf->mirror_num,
+						disk_key,
+						le64_to_cpu(root_item->
+						generation));
+				if (sf->error)
+					goto one_stack_frame_backwards;
+
+				if (NULL != sf->next_block) {
+					struct btrfs_header *const next_hdr =
+					    (struct btrfs_header *)
+					    sf->next_block_ctx.data;
+
+					next_stack =
+					    btrfsic_stack_frame_alloc();
+					if (NULL == next_stack) {
+						btrfsic_release_block_ctx(
+								&sf->
+								next_block_ctx);
+						goto one_stack_frame_backwards;
+					}
+
+					next_stack->i = -1;
+					next_stack->block = sf->next_block;
+					next_stack->block_ctx =
+					    &sf->next_block_ctx;
+					next_stack->next_block = NULL;
+					next_stack->hdr = next_hdr;
+					next_stack->limit_nesting =
+					    sf->limit_nesting - 1;
+					next_stack->prev = sf;
+					sf = next_stack;
+					goto continue_with_new_stack_frame;
+				}
+			} else if (BTRFS_EXTENT_DATA_KEY == type &&
+				   state->include_extent_data) {
+				sf->error = btrfsic_handle_extent_data(
+						state,
+						sf->block,
+						sf->block_ctx,
+						item_offset,
+						force_iodone_flag);
+				if (sf->error)
+					goto one_stack_frame_backwards;
+			}
+
+			goto continue_with_current_leaf_stack_frame;
+		}
+	} else {
+		struct btrfs_node *const nodehdr = (struct btrfs_node *)sf->hdr;
+
+		if (-1 == sf->i) {
+			sf->nr = le32_to_cpu(nodehdr->header.nritems);
+
+			if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
+				printk(KERN_INFO "node %llu level %d items %d"
+				       " generation %llu owner %llu\n",
+				       (unsigned long long)
+				       sf->block_ctx->start,
+				       nodehdr->header.level, sf->nr,
+				       (unsigned long long)
+				       le64_to_cpu(nodehdr->header.generation),
+				       (unsigned long long)
+				       le64_to_cpu(nodehdr->header.owner));
+		}
+
+continue_with_current_node_stack_frame:
+		if (0 == sf->num_copies || sf->mirror_num > sf->num_copies) {
+			sf->i++;
+			sf->num_copies = 0;
+		}
+
+		if (sf->i < sf->nr) {
+			struct btrfs_key_ptr *disk_key_ptr =
+			    nodehdr->ptrs + sf->i;
+			const u64 next_bytenr =
+			    le64_to_cpu(disk_key_ptr->blockptr);
+
+			sf->error = btrfsic_create_link_to_next_block(
+					state,
+					sf->block,
+					sf->block_ctx,
+					next_bytenr,
+					sf->limit_nesting,
+					&sf->next_block_ctx,
+					&sf->next_block,
+					force_iodone_flag,
+					&sf->num_copies,
+					&sf->mirror_num,
+					&disk_key_ptr->key,
+					le64_to_cpu(disk_key_ptr->generation));
+			if (sf->error)
+				goto one_stack_frame_backwards;
+
+			if (NULL != sf->next_block) {
+				struct btrfs_header *const next_hdr =
+				    (struct btrfs_header *)
+				    sf->next_block_ctx.data;
+
+				next_stack = btrfsic_stack_frame_alloc();
+				if (NULL == next_stack)
+					goto one_stack_frame_backwards;
+
+				next_stack->i = -1;
+				next_stack->block = sf->next_block;
+				next_stack->block_ctx = &sf->next_block_ctx;
+				next_stack->next_block = NULL;
+				next_stack->hdr = next_hdr;
+				next_stack->limit_nesting =
+				    sf->limit_nesting - 1;
+				next_stack->prev = sf;
+				sf = next_stack;
+				goto continue_with_new_stack_frame;
+			}
+
+			goto continue_with_current_node_stack_frame;
+		}
+	}
+
+one_stack_frame_backwards:
+	if (NULL != sf->prev) {
+		struct btrfsic_stack_frame *const prev = sf->prev;
+
+		/* the one for the initial block is freed in the caller */
+		btrfsic_release_block_ctx(sf->block_ctx);
+
+		if (sf->error) {
+			prev->error = sf->error;
+			btrfsic_stack_frame_free(sf);
+			sf = prev;
+			goto one_stack_frame_backwards;
+		}
+
+		btrfsic_stack_frame_free(sf);
+		sf = prev;
+		goto continue_with_new_stack_frame;
+	} else {
+		BUG_ON(&initial_stack_frame != sf);
+	}
+
+	return sf->error;
+}
+
+static int btrfsic_create_link_to_next_block(
+		struct btrfsic_state *state,
+		struct btrfsic_block *block,
+		struct btrfsic_block_data_ctx *block_ctx,
+		u64 next_bytenr,
+		int limit_nesting,
+		struct btrfsic_block_data_ctx *next_block_ctx,
+		struct btrfsic_block **next_blockp,
+		int force_iodone_flag,
+		int *num_copiesp, int *mirror_nump,
+		struct btrfs_disk_key *disk_key,
+		u64 parent_generation)
+{
+	struct btrfsic_block *next_block = NULL;
+	int ret;
+	struct btrfsic_block_link *l;
+	int did_alloc_block_link;
+	int block_was_created;
+
+	*next_blockp = NULL;
+	if (0 == *num_copiesp) {
+		*num_copiesp =
+		    btrfs_num_copies(&state->root->fs_info->mapping_tree,
+				     next_bytenr, PAGE_SIZE);
+		if (state->print_mask & BTRFSIC_PRINT_MASK_NUM_COPIES)
+			printk(KERN_INFO "num_copies(log_bytenr=%llu) = %d\n",
+			       (unsigned long long)next_bytenr, *num_copiesp);
+		*mirror_nump = 1;
+	}
+
+	if (*mirror_nump > *num_copiesp)
+		return 0;
+
+	if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
+		printk(KERN_INFO
+		       "btrfsic_create_link_to_next_block(mirror_num=%d)\n",
+		       *mirror_nump);
+	ret = btrfsic_map_block(state, next_bytenr,
+				BTRFSIC_BLOCK_SIZE,
+				next_block_ctx, *mirror_nump);
+	if (ret) {
+		printk(KERN_INFO
+		       "btrfsic: btrfsic_map_block(@%llu, mirror=%d) failed!\n",
+		       (unsigned long long)next_bytenr, *mirror_nump);
+		btrfsic_release_block_ctx(next_block_ctx);
+		*next_blockp = NULL;
+		return -1;
+	}
+
+	next_block = btrfsic_block_lookup_or_add(state,
+						 next_block_ctx, "referenced ",
+						 1, force_iodone_flag,
+						 !force_iodone_flag,
+						 *mirror_nump,
+						 &block_was_created);
+	if (NULL == next_block) {
+		btrfsic_release_block_ctx(next_block_ctx);
+		*next_blockp = NULL;
+		return -1;
+	}
+	if (block_was_created) {
+		l = NULL;
+		next_block->generation = BTRFSIC_GENERATION_UNKNOWN;
+	} else {
+		if (next_block->logical_bytenr != next_bytenr &&
+		    !(!next_block->is_metadata &&
+		      0 == next_block->logical_bytenr)) {
+			printk(KERN_INFO
+			       "Referenced block @%llu (%s/%llu/%d)"
+			       " found in hash table, %c,"
+			       " bytenr mismatch (!= stored %llu).\n",
+			       (unsigned long long)next_bytenr,
+			       next_block_ctx->dev->name,
+			       (unsigned long long)next_block_ctx->dev_bytenr,
+			       *mirror_nump,
+			       btrfsic_get_block_type(state, next_block),
+			       (unsigned long long)next_block->logical_bytenr);
+		} else if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
+			printk(KERN_INFO
+			       "Referenced block @%llu (%s/%llu/%d)"
+			       " found in hash table, %c.\n",
+			       (unsigned long long)next_bytenr,
+			       next_block_ctx->dev->name,
+			       (unsigned long long)next_block_ctx->dev_bytenr,
+			       *mirror_nump,
+			       btrfsic_get_block_type(state, next_block));
+		next_block->logical_bytenr = next_bytenr;
+
+		next_block->mirror_num = *mirror_nump;
+		l = btrfsic_block_link_hashtable_lookup(
+				next_block_ctx->dev->bdev,
+				next_block_ctx->dev_bytenr,
+				block_ctx->dev->bdev,
+				block_ctx->dev_bytenr,
+				&state->block_link_hashtable);
+	}
+
+	next_block->disk_key = *disk_key;
+	if (NULL == l) {
+		l = btrfsic_block_link_alloc();
+		if (NULL == l) {
+			printk(KERN_INFO "btrfsic: error, kmalloc failed!\n");
+			btrfsic_release_block_ctx(next_block_ctx);
+			*next_blockp = NULL;
+			return -1;
+		}
+
+		did_alloc_block_link = 1;
+		l->block_ref_to = next_block;
+		l->block_ref_from = block;
+		l->ref_cnt = 1;
+		l->parent_generation = parent_generation;
+
+		if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
+			btrfsic_print_add_link(state, l);
+
+		list_add(&l->node_ref_to, &block->ref_to_list);
+		list_add(&l->node_ref_from, &next_block->ref_from_list);
+
+		btrfsic_block_link_hashtable_add(l,
+						 &state->block_link_hashtable);
+	} else {
+		did_alloc_block_link = 0;
+		if (0 == limit_nesting) {
+			l->ref_cnt++;
+			l->parent_generation = parent_generation;
+			if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
+				btrfsic_print_add_link(state, l);
+		}
+	}
+
+	if (limit_nesting > 0 && did_alloc_block_link) {
+		ret = btrfsic_read_block(state, next_block_ctx);
+		if (ret < (int)BTRFSIC_BLOCK_SIZE) {
+			printk(KERN_INFO
+			       "btrfsic: read block @logical %llu failed!\n",
+			       (unsigned long long)next_bytenr);
+			btrfsic_release_block_ctx(next_block_ctx);
+			*next_blockp = NULL;
+			return -1;
+		}
+
+		*next_blockp = next_block;
+	} else {
+		*next_blockp = NULL;
+	}
+	(*mirror_nump)++;
+
+	return 0;
+}
+
+static int btrfsic_handle_extent_data(
+		struct btrfsic_state *state,
+		struct btrfsic_block *block,
+		struct btrfsic_block_data_ctx *block_ctx,
+		u32 item_offset, int force_iodone_flag)
+{
+	int ret;
+	struct btrfs_file_extent_item *file_extent_item =
+	    (struct btrfs_file_extent_item *)(block_ctx->data +
+					      offsetof(struct btrfs_leaf,
+						       items) + item_offset);
+	u64 next_bytenr =
+	    le64_to_cpu(file_extent_item->disk_bytenr) +
+	    le64_to_cpu(file_extent_item->offset);
+	u64 num_bytes = le64_to_cpu(file_extent_item->num_bytes);
+	u64 generation = le64_to_cpu(file_extent_item->generation);
+	struct btrfsic_block_link *l;
+
+	if (state->print_mask & BTRFSIC_PRINT_MASK_VERY_VERBOSE)
+		printk(KERN_INFO "extent_data: type %u, disk_bytenr = %llu,"
+		       " offset = %llu, num_bytes = %llu\n",
+		       file_extent_item->type,
+		       (unsigned long long)
+		       le64_to_cpu(file_extent_item->disk_bytenr),
+		       (unsigned long long)
+		       le64_to_cpu(file_extent_item->offset),
+		       (unsigned long long)
+		       le64_to_cpu(file_extent_item->num_bytes));
+	if (BTRFS_FILE_EXTENT_REG != file_extent_item->type ||
+	    ((u64)0) == le64_to_cpu(file_extent_item->disk_bytenr))
+		return 0;
+	while (num_bytes > 0) {
+		u32 chunk_len;
+		int num_copies;
+		int mirror_num;
+
+		if (num_bytes > BTRFSIC_BLOCK_SIZE)
+			chunk_len = BTRFSIC_BLOCK_SIZE;
+		else
+			chunk_len = num_bytes;
+
+		num_copies =
+		    btrfs_num_copies(&state->root->fs_info->mapping_tree,
+				     next_bytenr, PAGE_SIZE);
+		if (state->print_mask & BTRFSIC_PRINT_MASK_NUM_COPIES)
+			printk(KERN_INFO "num_copies(log_bytenr=%llu) = %d\n",
+			       (unsigned long long)next_bytenr, num_copies);
+		for (mirror_num = 1; mirror_num <= num_copies; mirror_num++) {
+			struct btrfsic_block_data_ctx next_block_ctx;
+			struct btrfsic_block *next_block;
+			int block_was_created;
+
+			if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
+				printk(KERN_INFO "btrfsic_handle_extent_data("
+				       "mirror_num=%d)\n", mirror_num);
+			if (state->print_mask & BTRFSIC_PRINT_MASK_VERY_VERBOSE)
+				printk(KERN_INFO
+				       "\tdisk_bytenr = %llu, num_bytes %u\n",
+				       (unsigned long long)next_bytenr,
+				       chunk_len);
+			ret = btrfsic_map_block(state, next_bytenr,
+						chunk_len, &next_block_ctx,
+						mirror_num);
+			if (ret) {
+				printk(KERN_INFO
+				       "btrfsic: btrfsic_map_block(@%llu,"
+				       " mirror=%d) failed!\n",
+				       (unsigned long long)next_bytenr,
+				       mirror_num);
+				return -1;
+			}
+
+			next_block = btrfsic_block_lookup_or_add(
+					state,
+					&next_block_ctx,
+					"referenced ",
+					0,
+					force_iodone_flag,
+					!force_iodone_flag,
+					mirror_num,
+					&block_was_created);
+			if (NULL == next_block) {
+				printk(KERN_INFO
+				       "btrfsic: error, kmalloc failed!\n");
+				btrfsic_release_block_ctx(&next_block_ctx);
+				return -1;
+			}
+			if (!block_was_created) {
+				if (next_block->logical_bytenr != next_bytenr &&
+				    !(!next_block->is_metadata &&
+				      0 == next_block->logical_bytenr)) {
+					printk(KERN_INFO
+					       "Referenced block"
+					       " @%llu (%s/%llu/%d)"
+					       " found in hash table, D,"
+					       " bytenr mismatch"
+					       " (!= stored %llu).\n",
+					       (unsigned long long)next_bytenr,
+					       next_block_ctx.dev->name,
+					       (unsigned long long)
+					       next_block_ctx.dev_bytenr,
+					       mirror_num,
+					       (unsigned long long)
+					       next_block->logical_bytenr);
+				}
+				next_block->logical_bytenr = next_bytenr;
+				next_block->mirror_num = mirror_num;
+			}
+
+			l = btrfsic_block_link_lookup_or_add(state,
+							     &next_block_ctx,
+							     next_block, block,
+							     generation);
+			btrfsic_release_block_ctx(&next_block_ctx);
+			if (NULL == l)
+				return -1;
+		}
+
+		next_bytenr += chunk_len;
+		num_bytes -= chunk_len;
+	}
+
+	return 0;
+}
+
+static int btrfsic_map_block(struct btrfsic_state *state, u64 bytenr, u32 len,
+			     struct btrfsic_block_data_ctx *block_ctx_out,
+			     int mirror_num)
+{
+	int ret;
+	u64 length;
+	struct btrfs_bio *multi = NULL;
+	struct btrfs_device *device;
+
+	length = len;
+	ret = btrfs_map_block(&state->root->fs_info->mapping_tree, READ,
+			      bytenr, &length, &multi, mirror_num);
+
+	device = multi->stripes[0].dev;
+	block_ctx_out->dev = btrfsic_dev_state_lookup(device->bdev);
+	block_ctx_out->dev_bytenr = multi->stripes[0].physical;
+	block_ctx_out->start = bytenr;
+	block_ctx_out->len = len;
+	block_ctx_out->data = NULL;
+	block_ctx_out->bh = NULL;
+
+	if (0 == ret)
+		kfree(multi);
+	if (NULL == block_ctx_out->dev) {
+		ret = -ENXIO;
+		printk(KERN_INFO "btrfsic: error, cannot lookup dev (#1)!\n");
+	}
+
+	return ret;
+}
+
+static int btrfsic_map_superblock(struct btrfsic_state *state, u64 bytenr,
+				  u32 len, struct block_device *bdev,
+				  struct btrfsic_block_data_ctx *block_ctx_out)
+{
+	block_ctx_out->dev = btrfsic_dev_state_lookup(bdev);
+	block_ctx_out->dev_bytenr = bytenr;
+	block_ctx_out->start = bytenr;
+	block_ctx_out->len = len;
+	block_ctx_out->data = NULL;
+	block_ctx_out->bh = NULL;
+	if (NULL != block_ctx_out->dev) {
+		return 0;
+	} else {
+		printk(KERN_INFO "btrfsic: error, cannot lookup dev (#2)!\n");
+		return -ENXIO;
+	}
+}
+
+static void btrfsic_release_block_ctx(struct btrfsic_block_data_ctx *block_ctx)
+{
+	if (NULL != block_ctx->bh) {
+		brelse(block_ctx->bh);
+		block_ctx->bh = NULL;
+	}
+}
+
+static int btrfsic_read_block(struct btrfsic_state *state,
+			      struct btrfsic_block_data_ctx *block_ctx)
+{
+	block_ctx->bh = NULL;
+	if (block_ctx->dev_bytenr & 4095) {
+		printk(KERN_INFO
+		       "btrfsic: read_block() with unaligned bytenr %llu\n",
+		       (unsigned long long)block_ctx->dev_bytenr);
+		return -1;
+	}
+	if (block_ctx->len > 4096) {
+		printk(KERN_INFO
+		       "btrfsic: read_block() with too huge size %d\n",
+		       block_ctx->len);
+		return -1;
+	}
+
+	block_ctx->bh = __bread(block_ctx->dev->bdev,
+				block_ctx->dev_bytenr >> 12, 4096);
+	if (NULL == block_ctx->bh)
+		return -1;
+	block_ctx->data = block_ctx->bh->b_data;
+
+	return block_ctx->len;
+}
+
+static void btrfsic_dump_database(struct btrfsic_state *state)
+{
+	struct list_head *elem_all;
+
+	BUG_ON(NULL == state);
+
+	printk(KERN_INFO "all_blocks_list:\n");
+	list_for_each(elem_all, &state->all_blocks_list) {
+		const struct btrfsic_block *const b_all =
+		    list_entry(elem_all, struct btrfsic_block,
+			       all_blocks_node);
+		struct list_head *elem_ref_to;
+		struct list_head *elem_ref_from;
+
+		printk(KERN_INFO "%c-block @%llu (%s/%llu/%d)\n",
+		       btrfsic_get_block_type(state, b_all),
+		       (unsigned long long)b_all->logical_bytenr,
+		       b_all->dev_state->name,
+		       (unsigned long long)b_all->dev_bytenr,
+		       b_all->mirror_num);
+
+		list_for_each(elem_ref_to, &b_all->ref_to_list) {
+			const struct btrfsic_block_link *const l =
+			    list_entry(elem_ref_to,
+				       struct btrfsic_block_link,
+				       node_ref_to);
+
+			printk(KERN_INFO " %c @%llu (%s/%llu/%d)"
+			       " refers %u* to"
+			       " %c @%llu (%s/%llu/%d)\n",
+			       btrfsic_get_block_type(state, b_all),
+			       (unsigned long long)b_all->logical_bytenr,
+			       b_all->dev_state->name,
+			       (unsigned long long)b_all->dev_bytenr,
+			       b_all->mirror_num,
+			       l->ref_cnt,
+			       btrfsic_get_block_type(state, l->block_ref_to),
+			       (unsigned long long)
+			       l->block_ref_to->logical_bytenr,
+			       l->block_ref_to->dev_state->name,
+			       (unsigned long long)l->block_ref_to->dev_bytenr,
+			       l->block_ref_to->mirror_num);
+		}
+
+		list_for_each(elem_ref_from, &b_all->ref_from_list) {
+			const struct btrfsic_block_link *const l =
+			    list_entry(elem_ref_from,
+				       struct btrfsic_block_link,
+				       node_ref_from);
+
+			printk(KERN_INFO " %c @%llu (%s/%llu/%d)"
+			       " is ref %u* from"
+			       " %c @%llu (%s/%llu/%d)\n",
+			       btrfsic_get_block_type(state, b_all),
+			       (unsigned long long)b_all->logical_bytenr,
+			       b_all->dev_state->name,
+			       (unsigned long long)b_all->dev_bytenr,
+			       b_all->mirror_num,
+			       l->ref_cnt,
+			       btrfsic_get_block_type(state, l->block_ref_from),
+			       (unsigned long long)
+			       l->block_ref_from->logical_bytenr,
+			       l->block_ref_from->dev_state->name,
+			       (unsigned long long)
+			       l->block_ref_from->dev_bytenr,
+			       l->block_ref_from->mirror_num);
+		}
+
+		printk(KERN_INFO "\n");
+	}
+}
+
+/*
+ * Test whether the disk block contains a tree block (leaf or node)
+ * (note that this test fails for the super block)
+ */
+static int btrfsic_test_for_metadata(struct btrfsic_state *state,
+				     const u8 *data, unsigned int size)
+{
+	struct btrfs_header *h;
+	u8 csum[BTRFS_CSUM_SIZE];
+	u32 crc = ~(u32)0;
+	int fail = 0;
+	int crc_fail = 0;
+
+	h = (struct btrfs_header *)data;
+
+	if (memcmp(h->fsid, state->root->fs_info->fsid, BTRFS_UUID_SIZE))
+		fail++;
+
+	crc = crc32c(crc, data + BTRFS_CSUM_SIZE, PAGE_SIZE - BTRFS_CSUM_SIZE);
+	btrfs_csum_final(crc, csum);
+	if (memcmp(csum, h->csum, state->csum_size))
+		crc_fail++;
+
+	return fail || crc_fail;
+}
+
+static void btrfsic_process_written_block(struct btrfsic_dev_state *dev_state,
+					  u64 dev_bytenr,
+					  u8 *mapped_data, unsigned int len,
+					  struct bio *bio,
+					  int *bio_is_patched,
+					  struct buffer_head *bh,
+					  int submit_bio_bh_rw)
+{
+	int is_metadata;
+	struct btrfsic_block *block;
+	struct btrfsic_block_data_ctx block_ctx;
+	int ret;
+	struct btrfsic_state *state = dev_state->state;
+	struct block_device *bdev = dev_state->bdev;
+
+	WARN_ON(len > PAGE_SIZE);
+	is_metadata = (0 == btrfsic_test_for_metadata(state, mapped_data, len));
+	if (NULL != bio_is_patched)
+		*bio_is_patched = 0;
+
+	block = btrfsic_block_hashtable_lookup(bdev, dev_bytenr,
+					       &state->block_hashtable);
+	if (NULL != block) {
+		u64 bytenr;
+		struct list_head *elem_ref_to;
+		struct list_head *tmp_ref_to;
+
+		if (block->is_superblock) {
+			bytenr = le64_to_cpu(((struct btrfs_super_block *)
+					      mapped_data)->bytenr);
+			is_metadata = 1;
+			if (state->print_mask &
+			    BTRFSIC_PRINT_MASK_TREE_BEFORE_SB_WRITE) {
+				printk(KERN_INFO
+				       "[before new superblock is written]:\n");
+				btrfsic_dump_tree_sub(state, block, 0);
+			}
+		}
+		if (is_metadata) {
+			if (!block->is_superblock) {
+				bytenr = le64_to_cpu(((struct btrfs_header *)
+						      mapped_data)->bytenr);
+				btrfsic_cmp_log_and_dev_bytenr(state, bytenr,
+							       dev_state,
+							       dev_bytenr,
+							       mapped_data);
+			}
+			if (block->logical_bytenr != bytenr) {
+				printk(KERN_INFO
+				       "Written block @%llu (%s/%llu/%d)"
+				       " found in hash table, %c,"
+				       " bytenr mismatch"
+				       " (!= stored %llu).\n",
+				       (unsigned long long)bytenr,
+				       dev_state->name,
+				       (unsigned long long)dev_bytenr,
+				       block->mirror_num,
+				       btrfsic_get_block_type(state, block),
+				       (unsigned long long)
+				       block->logical_bytenr);
+				block->logical_bytenr = bytenr;
+			} else if (state->print_mask &
+				   BTRFSIC_PRINT_MASK_VERBOSE)
+				printk(KERN_INFO
+				       "Written block @%llu (%s/%llu/%d)"
+				       " found in hash table, %c.\n",
+				       (unsigned long long)bytenr,
+				       dev_state->name,
+				       (unsigned long long)dev_bytenr,
+				       block->mirror_num,
+				       btrfsic_get_block_type(state, block));
+		} else {
+			bytenr = block->logical_bytenr;
+			if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
+				printk(KERN_INFO
+				       "Written block @%llu (%s/%llu/%d)"
+				       " found in hash table, %c.\n",
+				       (unsigned long long)bytenr,
+				       dev_state->name,
+				       (unsigned long long)dev_bytenr,
+				       block->mirror_num,
+				       btrfsic_get_block_type(state, block));
+		}
+
+		if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
+			printk(KERN_INFO
+			       "ref_to_list: %cE, ref_from_list: %cE\n",
+			       list_empty(&block->ref_to_list) ? ' ' : '!',
+			       list_empty(&block->ref_from_list) ? ' ' : '!');
+		if (btrfsic_is_block_ref_by_superblock(state, block, 0)) {
+			printk(KERN_INFO "btrfs: attempt to overwrite %c-block"
+			       " @%llu (%s/%llu/%d), old(gen=%llu,"
+			       " objectid=%llu, type=%d, offset=%llu),"
+			       " new(gen=%llu),"
+			       " which is referenced by most recent superblock"
+			       " (superblockgen=%llu)!\n",
+			       btrfsic_get_block_type(state, block),
+			       (unsigned long long)bytenr,
+			       dev_state->name,
+			       (unsigned long long)dev_bytenr,
+			       block->mirror_num,
+			       (unsigned long long)block->generation,
+			       (unsigned long long)
+			       le64_to_cpu(block->disk_key.objectid),
+			       block->disk_key.type,
+			       (unsigned long long)
+			       le64_to_cpu(block->disk_key.offset),
+			       (unsigned long long)
+			       le64_to_cpu(((struct btrfs_header *)
+					    mapped_data)->generation),
+			       (unsigned long long)
+			       state->max_superblock_generation);
+			btrfsic_dump_tree(state);
+		}
+
+		if (!block->is_iodone && !block->never_written) {
+			printk(KERN_INFO "btrfs: attempt to overwrite %c-block"
+			       " @%llu (%s/%llu/%d), oldgen=%llu, newgen=%llu,"
+			       " which is not yet iodone!\n",
+			       btrfsic_get_block_type(state, block),
+			       (unsigned long long)bytenr,
+			       dev_state->name,
+			       (unsigned long long)dev_bytenr,
+			       block->mirror_num,
+			       (unsigned long long)block->generation,
+			       (unsigned long long)
+			       le64_to_cpu(((struct btrfs_header *)
+					    mapped_data)->generation));
+			/* it would not be safe to go on */
+			btrfsic_dump_tree(state);
+			return;
+		}
+
+		/*
+		 * Clear all references of this block. Do not free
+		 * the block itself even if is not referenced anymore
+		 * because it still carries valueable information
+		 * like whether it was ever written and IO completed.
+		 */
+		list_for_each_safe(elem_ref_to, tmp_ref_to,
+				   &block->ref_to_list) {
+			struct btrfsic_block_link *const l =
+			    list_entry(elem_ref_to,
+				       struct btrfsic_block_link,
+				       node_ref_to);
+
+			if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
+				btrfsic_print_rem_link(state, l);
+			l->ref_cnt--;
+			if (0 == l->ref_cnt) {
+				list_del(&l->node_ref_to);
+				list_del(&l->node_ref_from);
+				btrfsic_block_link_hashtable_remove(l);
+				btrfsic_block_link_free(l);
+			}
+		}
+
+		if (block->is_superblock)
+			ret = btrfsic_map_superblock(state, bytenr, len,
+						     bdev, &block_ctx);
+		else
+			ret = btrfsic_map_block(state, bytenr, len,
+						&block_ctx, 0);
+		if (ret) {
+			printk(KERN_INFO
+			       "btrfsic: btrfsic_map_block(root @%llu)"
+			       " failed!\n", (unsigned long long)bytenr);
+			return;
+		}
+		block_ctx.data = mapped_data;
+		/* the following is required in case of writes to mirrors,
+		 * use the same that was used for the lookup */
+		block_ctx.dev = dev_state;
+		block_ctx.dev_bytenr = dev_bytenr;
+
+		if (is_metadata || state->include_extent_data) {
+			block->never_written = 0;
+			block->iodone_w_error = 0;
+			if (NULL != bio) {
+				block->is_iodone = 0;
+				BUG_ON(NULL == bio_is_patched);
+				if (!*bio_is_patched) {
+					block->orig_bio_bh_private =
+					    bio->bi_private;
+					block->orig_bio_bh_end_io.bio =
+					    bio->bi_end_io;
+					block->next_in_same_bio = NULL;
+					bio->bi_private = block;
+					bio->bi_end_io = btrfsic_bio_end_io;
+					*bio_is_patched = 1;
+				} else {
+					struct btrfsic_block *chained_block =
+					    (struct btrfsic_block *)
+					    bio->bi_private;
+
+					BUG_ON(NULL == chained_block);
+					block->orig_bio_bh_private =
+					    chained_block->orig_bio_bh_private;
+					block->orig_bio_bh_end_io.bio =
+					    chained_block->orig_bio_bh_end_io.
+					    bio;
+					block->next_in_same_bio = chained_block;
+					bio->bi_private = block;
+				}
+			} else if (NULL != bh) {
+				block->is_iodone = 0;
+				block->orig_bio_bh_private = bh->b_private;
+				block->orig_bio_bh_end_io.bh = bh->b_end_io;
+				block->next_in_same_bio = NULL;
+				bh->b_private = block;
+				bh->b_end_io = btrfsic_bh_end_io;
+			} else {
+				block->is_iodone = 1;
+				block->orig_bio_bh_private = NULL;
+				block->orig_bio_bh_end_io.bio = NULL;
+				block->next_in_same_bio = NULL;
+			}
+		}
+
+		block->flush_gen = dev_state->last_flush_gen + 1;
+		block->submit_bio_bh_rw = submit_bio_bh_rw;
+		if (is_metadata) {
+			block->logical_bytenr = bytenr;
+			block->is_metadata = 1;
+			if (block->is_superblock) {
+				ret = btrfsic_process_written_superblock(
+						state,
+						block,
+						(struct btrfs_super_block *)
+						mapped_data);
+				if (state->print_mask &
+				    BTRFSIC_PRINT_MASK_TREE_AFTER_SB_WRITE) {
+					printk(KERN_INFO
+					"[after new superblock is written]:\n");
+					btrfsic_dump_tree_sub(state, block, 0);
+				}
+			} else {
+				block->mirror_num = 0;	/* unknown */
+				ret = btrfsic_process_metablock(
+						state,
+						block,
+						&block_ctx,
+						(struct btrfs_header *)
+						block_ctx.data,
+						0, 0);
+			}
+			if (ret)
+				printk(KERN_INFO
+				       "btrfsic: btrfsic_process_metablock"
+				       "(root @%llu) failed!\n",
+				       (unsigned long long)dev_bytenr);
+		} else {
+			block->is_metadata = 0;
+			block->mirror_num = 0;	/* unknown */
+			block->generation = BTRFSIC_GENERATION_UNKNOWN;
+			if (!state->include_extent_data
+			    && list_empty(&block->ref_from_list)) {
+				/*
+				 * disk block is overwritten with extent
+				 * data (not meta data) and we are configured
+				 * to not include extent data: take the
+				 * chance and free the block's memory
+				 */
+				btrfsic_block_hashtable_remove(block);
+				list_del(&block->all_blocks_node);
+				btrfsic_block_free(block);
+			}
+		}
+		btrfsic_release_block_ctx(&block_ctx);
+	} else {
+		/* block has not been found in hash table */
+		u64 bytenr;
+
+		if (!is_metadata) {
+			if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
+				printk(KERN_INFO "Written block (%s/%llu/?)"
+				       " !found in hash table, D.\n",
+				       dev_state->name,
+				       (unsigned long long)dev_bytenr);
+			if (!state->include_extent_data)
+				return;	/* ignore that written D block */
+
+			/* this is getting ugly for the
+			 * include_extent_data case... */
+			bytenr = 0;	/* unknown */
+			block_ctx.start = bytenr;
+			block_ctx.len = len;
+			block_ctx.bh = NULL;
+		} else {
+			bytenr = le64_to_cpu(((struct btrfs_header *)
+					      mapped_data)->bytenr);
+			btrfsic_cmp_log_and_dev_bytenr(state, bytenr, dev_state,
+						       dev_bytenr,
+						       mapped_data);
+			if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
+				printk(KERN_INFO
+				       "Written block @%llu (%s/%llu/?)"
+				       " !found in hash table, M.\n",
+				       (unsigned long long)bytenr,
+				       dev_state->name,
+				       (unsigned long long)dev_bytenr);
+
+			ret = btrfsic_map_block(state, bytenr, len, &block_ctx,
+						0);
+			if (ret) {
+				printk(KERN_INFO
+				       "btrfsic: btrfsic_map_block(root @%llu)"
+				       " failed!\n",
+				       (unsigned long long)dev_bytenr);
+				return;
+			}
+		}
+		block_ctx.data = mapped_data;
+		/* the following is required in case of writes to mirrors,
+		 * use the same that was used for the lookup */
+		block_ctx.dev = dev_state;
+		block_ctx.dev_bytenr = dev_bytenr;
+
+		block = btrfsic_block_alloc();
+		if (NULL == block) {
+			printk(KERN_INFO "btrfsic: error, kmalloc failed!\n");
+			btrfsic_release_block_ctx(&block_ctx);
+			return;
+		}
+		block->dev_state = dev_state;
+		block->dev_bytenr = dev_bytenr;
+		block->logical_bytenr = bytenr;
+		block->is_metadata = is_metadata;
+		block->never_written = 0;
+		block->iodone_w_error = 0;
+		block->mirror_num = 0;	/* unknown */
+		block->flush_gen = dev_state->last_flush_gen + 1;
+		block->submit_bio_bh_rw = submit_bio_bh_rw;
+		if (NULL != bio) {
+			block->is_iodone = 0;
+			BUG_ON(NULL == bio_is_patched);
+			if (!*bio_is_patched) {
+				block->orig_bio_bh_private = bio->bi_private;
+				block->orig_bio_bh_end_io.bio = bio->bi_end_io;
+				block->next_in_same_bio = NULL;
+				bio->bi_private = block;
+				bio->bi_end_io = btrfsic_bio_end_io;
+				*bio_is_patched = 1;
+			} else {
+				struct btrfsic_block *chained_block =
+				    (struct btrfsic_block *)
+				    bio->bi_private;
+
+				BUG_ON(NULL == chained_block);
+				block->orig_bio_bh_private =
+				    chained_block->orig_bio_bh_private;
+				block->orig_bio_bh_end_io.bio =
+				    chained_block->orig_bio_bh_end_io.bio;
+				block->next_in_same_bio = chained_block;
+				bio->bi_private = block;
+			}
+		} else if (NULL != bh) {
+			block->is_iodone = 0;
+			block->orig_bio_bh_private = bh->b_private;
+			block->orig_bio_bh_end_io.bh = bh->b_end_io;
+			block->next_in_same_bio = NULL;
+			bh->b_private = block;
+			bh->b_end_io = btrfsic_bh_end_io;
+		} else {
+			block->is_iodone = 1;
+			block->orig_bio_bh_private = NULL;
+			block->orig_bio_bh_end_io.bio = NULL;
+			block->next_in_same_bio = NULL;
+		}
+		if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
+			printk(KERN_INFO
+			       "New written %c-block @%llu (%s/%llu/%d)\n",
+			       is_metadata ? 'M' : 'D',
+			       (unsigned long long)block->logical_bytenr,
+			       block->dev_state->name,
+			       (unsigned long long)block->dev_bytenr,
+			       block->mirror_num);
+		list_add(&block->all_blocks_node, &state->all_blocks_list);
+		btrfsic_block_hashtable_add(block, &state->block_hashtable);
+
+		if (is_metadata) {
+			ret = btrfsic_process_metablock(state, block,
+							&block_ctx,
+							(struct btrfs_header *)
+							block_ctx.data, 0, 0);
+			if (ret)
+				printk(KERN_INFO
+				       "btrfsic: process_metablock(root @%llu)"
+				       " failed!\n",
+				       (unsigned long long)dev_bytenr);
+		}
+		btrfsic_release_block_ctx(&block_ctx);
+	}
+}
+
+static void btrfsic_bio_end_io(struct bio *bp, int bio_error_status)
+{
+	struct btrfsic_block *block = (struct btrfsic_block *)bp->bi_private;
+	int iodone_w_error;
+
+	/* mutex is not held! This is not save if IO is not yet completed
+	 * on umount */
+	iodone_w_error = 0;
+	if (bio_error_status)
+		iodone_w_error = 1;
+
+	BUG_ON(NULL == block);
+	bp->bi_private = block->orig_bio_bh_private;
+	bp->bi_end_io = block->orig_bio_bh_end_io.bio;
+
+	do {
+		struct btrfsic_block *next_block;
+		struct btrfsic_dev_state *const dev_state = block->dev_state;
+
+		if ((dev_state->state->print_mask &
+		     BTRFSIC_PRINT_MASK_END_IO_BIO_BH))
+			printk(KERN_INFO
+			       "bio_end_io(err=%d) for %c @%llu (%s/%llu/%d)\n",
+			       bio_error_status,
+			       btrfsic_get_block_type(dev_state->state, block),
+			       (unsigned long long)block->logical_bytenr,
+			       dev_state->name,
+			       (unsigned long long)block->dev_bytenr,
+			       block->mirror_num);
+		next_block = block->next_in_same_bio;
+		block->iodone_w_error = iodone_w_error;
+		if (block->submit_bio_bh_rw & REQ_FLUSH) {
+			dev_state->last_flush_gen++;
+			if ((dev_state->state->print_mask &
+			     BTRFSIC_PRINT_MASK_END_IO_BIO_BH))
+				printk(KERN_INFO
+				       "bio_end_io() new %s flush_gen=%llu\n",
+				       dev_state->name,
+				       (unsigned long long)
+				       dev_state->last_flush_gen);
+		}
+		if (block->submit_bio_bh_rw & REQ_FUA)
+			block->flush_gen = 0; /* FUA completed means block is
+					       * on disk */
+		block->is_iodone = 1; /* for FLUSH, this releases the block */
+		block = next_block;
+	} while (NULL != block);
+
+	bp->bi_end_io(bp, bio_error_status);
+}
+
+static void btrfsic_bh_end_io(struct buffer_head *bh, int uptodate)
+{
+	struct btrfsic_block *block = (struct btrfsic_block *)bh->b_private;
+	int iodone_w_error = !uptodate;
+	struct btrfsic_dev_state *dev_state;
+
+	BUG_ON(NULL == block);
+	dev_state = block->dev_state;
+	if ((dev_state->state->print_mask & BTRFSIC_PRINT_MASK_END_IO_BIO_BH))
+		printk(KERN_INFO
+		       "bh_end_io(error=%d) for %c @%llu (%s/%llu/%d)\n",
+		       iodone_w_error,
+		       btrfsic_get_block_type(dev_state->state, block),
+		       (unsigned long long)block->logical_bytenr,
+		       block->dev_state->name,
+		       (unsigned long long)block->dev_bytenr,
+		       block->mirror_num);
+
+	block->iodone_w_error = iodone_w_error;
+	if (block->submit_bio_bh_rw & REQ_FLUSH) {
+		dev_state->last_flush_gen++;
+		if ((dev_state->state->print_mask &
+		     BTRFSIC_PRINT_MASK_END_IO_BIO_BH))
+			printk(KERN_INFO
+			       "bh_end_io() new %s flush_gen=%llu\n",
+			       dev_state->name,
+			       (unsigned long long)dev_state->last_flush_gen);
+	}
+	if (block->submit_bio_bh_rw & REQ_FUA)
+		block->flush_gen = 0; /* FUA completed means block is on disk */
+
+	bh->b_private = block->orig_bio_bh_private;
+	bh->b_end_io = block->orig_bio_bh_end_io.bh;
+	block->is_iodone = 1; /* for FLUSH, this releases the block */
+	bh->b_end_io(bh, uptodate);
+}
+
+static int btrfsic_process_written_superblock(
+		struct btrfsic_state *state,
+		struct btrfsic_block *const superblock,
+		struct btrfs_super_block *const super_hdr)
+{
+	int pass;
+
+	superblock->generation = btrfs_super_generation(super_hdr);
+	if (!(superblock->generation > state->max_superblock_generation ||
+	      0 == state->max_superblock_generation)) {
+		if (state->print_mask & BTRFSIC_PRINT_MASK_SUPERBLOCK_WRITE)
+			printk(KERN_INFO
+			       "btrfsic: superblock @%llu (%s/%llu/%d)"
+			       " with old gen %llu <= %llu\n",
+			       (unsigned long long)superblock->logical_bytenr,
+			       superblock->dev_state->name,
+			       (unsigned long long)superblock->dev_bytenr,
+			       superblock->mirror_num,
+			       (unsigned long long)
+			       btrfs_super_generation(super_hdr),
+			       (unsigned long long)
+			       state->max_superblock_generation);
+	} else {
+		if (state->print_mask & BTRFSIC_PRINT_MASK_SUPERBLOCK_WRITE)
+			printk(KERN_INFO
+			       "btrfsic: got new superblock @%llu (%s/%llu/%d)"
+			       " with new gen %llu > %llu\n",
+			       (unsigned long long)superblock->logical_bytenr,
+			       superblock->dev_state->name,
+			       (unsigned long long)superblock->dev_bytenr,
+			       superblock->mirror_num,
+			       (unsigned long long)
+			       btrfs_super_generation(super_hdr),
+			       (unsigned long long)
+			       state->max_superblock_generation);
+
+		state->max_superblock_generation =
+		    btrfs_super_generation(super_hdr);
+		state->latest_superblock = superblock;
+	}
+
+	for (pass = 0; pass < 3; pass++) {
+		int ret;
+		u64 next_bytenr;
+		struct btrfsic_block *next_block;
+		struct btrfsic_block_data_ctx tmp_next_block_ctx;
+		struct btrfsic_block_link *l;
+		int num_copies;
+		int mirror_num;
+		const char *additional_string = NULL;
+		struct btrfs_disk_key tmp_disk_key;
+
+		tmp_disk_key.type = BTRFS_ROOT_ITEM_KEY;
+		tmp_disk_key.offset = 0;
+
+		switch (pass) {
+		case 0:
+			tmp_disk_key.objectid =
+			    cpu_to_le64(BTRFS_ROOT_TREE_OBJECTID);
+			additional_string = "root ";
+			next_bytenr = btrfs_super_root(super_hdr);
+			if (state->print_mask &
+			    BTRFSIC_PRINT_MASK_ROOT_CHUNK_LOG_TREE_LOCATION)
+				printk(KERN_INFO "root@%llu\n",
+				       (unsigned long long)next_bytenr);
+			break;
+		case 1:
+			tmp_disk_key.objectid =
+			    cpu_to_le64(BTRFS_CHUNK_TREE_OBJECTID);
+			additional_string = "chunk ";
+			next_bytenr = btrfs_super_chunk_root(super_hdr);
+			if (state->print_mask &
+			    BTRFSIC_PRINT_MASK_ROOT_CHUNK_LOG_TREE_LOCATION)
+				printk(KERN_INFO "chunk@%llu\n",
+				       (unsigned long long)next_bytenr);
+			break;
+		case 2:
+			tmp_disk_key.objectid =
+			    cpu_to_le64(BTRFS_TREE_LOG_OBJECTID);
+			additional_string = "log ";
+			next_bytenr = btrfs_super_log_root(super_hdr);
+			if (0 == next_bytenr)
+				continue;
+			if (state->print_mask &
+			    BTRFSIC_PRINT_MASK_ROOT_CHUNK_LOG_TREE_LOCATION)
+				printk(KERN_INFO "log@%llu\n",
+				       (unsigned long long)next_bytenr);
+			break;
+		}
+
+		num_copies =
+		    btrfs_num_copies(&state->root->fs_info->mapping_tree,
+				     next_bytenr, PAGE_SIZE);
+		if (state->print_mask & BTRFSIC_PRINT_MASK_NUM_COPIES)
+			printk(KERN_INFO "num_copies(log_bytenr=%llu) = %d\n",
+			       (unsigned long long)next_bytenr, num_copies);
+		for (mirror_num = 1; mirror_num <= num_copies; mirror_num++) {
+			int was_created;
+
+			if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
+				printk(KERN_INFO
+				       "btrfsic_process_written_superblock("
+				       "mirror_num=%d)\n", mirror_num);
+			ret = btrfsic_map_block(state, next_bytenr, PAGE_SIZE,
+						&tmp_next_block_ctx,
+						mirror_num);
+			if (ret) {
+				printk(KERN_INFO
+				       "btrfsic: btrfsic_map_block(@%llu,"
+				       " mirror=%d) failed!\n",
+				       (unsigned long long)next_bytenr,
+				       mirror_num);
+				return -1;
+			}
+
+			next_block = btrfsic_block_lookup_or_add(
+					state,
+					&tmp_next_block_ctx,
+					additional_string,
+					1, 0, 1,
+					mirror_num,
+					&was_created);
+			if (NULL == next_block) {
+				printk(KERN_INFO
+				       "btrfsic: error, kmalloc failed!\n");
+				btrfsic_release_block_ctx(&tmp_next_block_ctx);
+				return -1;
+			}
+
+			next_block->disk_key = tmp_disk_key;
+			if (was_created)
+				next_block->generation =
+				    BTRFSIC_GENERATION_UNKNOWN;
+			l = btrfsic_block_link_lookup_or_add(
+					state,
+					&tmp_next_block_ctx,
+					next_block,
+					superblock,
+					BTRFSIC_GENERATION_UNKNOWN);
+			btrfsic_release_block_ctx(&tmp_next_block_ctx);
+			if (NULL == l)
+				return -1;
+		}
+	}
+
+	if (-1 == btrfsic_check_all_ref_blocks(state, superblock, 0)) {
+		WARN_ON(1);
+		btrfsic_dump_tree(state);
+	}
+
+	return 0;
+}
+
+static int btrfsic_check_all_ref_blocks(struct btrfsic_state *state,
+					struct btrfsic_block *const block,
+					int recursion_level)
+{
+	struct list_head *elem_ref_to;
+	int ret = 0;
+
+	if (recursion_level >= 3 + BTRFS_MAX_LEVEL) {
+		/*
+		 * Note that this situation can happen and does not
+		 * indicate an error in regular cases. It happens
+		 * when disk blocks are freed and later reused.
+		 * The check-integrity module is not aware of any
+		 * block free operations, it just recognizes block
+		 * write operations. Therefore it keeps the linkage
+		 * information for a block until a block is
+		 * rewritten. This can temporarily cause incorrect
+		 * and even circular linkage informations. This
+		 * causes no harm unless such blocks are referenced
+		 * by the most recent super block.
+		 */
+		if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
+			printk(KERN_INFO
+			       "btrfsic: abort cyclic linkage (case 1).\n");
+
+		return ret;
+	}
+
+	/*
+	 * This algorithm is recursive because the amount of used stack
+	 * space is very small and the max recursion depth is limited.
+	 */
+	list_for_each(elem_ref_to, &block->ref_to_list) {
+		const struct btrfsic_block_link *const l =
+		    list_entry(elem_ref_to, struct btrfsic_block_link,
+			       node_ref_to);
+
+		if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
+			printk(KERN_INFO
+			       "rl=%d, %c @%llu (%s/%llu/%d)"
+			       " %u* refers to %c @%llu (%s/%llu/%d)\n",
+			       recursion_level,
+			       btrfsic_get_block_type(state, block),
+			       (unsigned long long)block->logical_bytenr,
+			       block->dev_state->name,
+			       (unsigned long long)block->dev_bytenr,
+			       block->mirror_num,
+			       l->ref_cnt,
+			       btrfsic_get_block_type(state, l->block_ref_to),
+			       (unsigned long long)
+			       l->block_ref_to->logical_bytenr,
+			       l->block_ref_to->dev_state->name,
+			       (unsigned long long)l->block_ref_to->dev_bytenr,
+			       l->block_ref_to->mirror_num);
+		if (l->block_ref_to->never_written) {
+			printk(KERN_INFO "btrfs: attempt to write superblock"
+			       " which references block %c @%llu (%s/%llu/%d)"
+			       " which is never written!\n",
+			       btrfsic_get_block_type(state, l->block_ref_to),
+			       (unsigned long long)
+			       l->block_ref_to->logical_bytenr,
+			       l->block_ref_to->dev_state->name,
+			       (unsigned long long)l->block_ref_to->dev_bytenr,
+			       l->block_ref_to->mirror_num);
+			ret = -1;
+		} else if (!l->block_ref_to->is_iodone) {
+			printk(KERN_INFO "btrfs: attempt to write superblock"
+			       " which references block %c @%llu (%s/%llu/%d)"
+			       " which is not yet iodone!\n",
+			       btrfsic_get_block_type(state, l->block_ref_to),
+			       (unsigned long long)
+			       l->block_ref_to->logical_bytenr,
+			       l->block_ref_to->dev_state->name,
+			       (unsigned long long)l->block_ref_to->dev_bytenr,
+			       l->block_ref_to->mirror_num);
+			ret = -1;
+		} else if (l->parent_generation !=
+			   l->block_ref_to->generation &&
+			   BTRFSIC_GENERATION_UNKNOWN !=
+			   l->parent_generation &&
+			   BTRFSIC_GENERATION_UNKNOWN !=
+			   l->block_ref_to->generation) {
+			printk(KERN_INFO "btrfs: attempt to write superblock"
+			       " which references block %c @%llu (%s/%llu/%d)"
+			       " with generation %llu !="
+			       " parent generation %llu!\n",
+			       btrfsic_get_block_type(state, l->block_ref_to),
+			       (unsigned long long)
+			       l->block_ref_to->logical_bytenr,
+			       l->block_ref_to->dev_state->name,
+			       (unsigned long long)l->block_ref_to->dev_bytenr,
+			       l->block_ref_to->mirror_num,
+			       (unsigned long long)l->block_ref_to->generation,
+			       (unsigned long long)l->parent_generation);
+			ret = -1;
+		} else if (l->block_ref_to->flush_gen >
+			   l->block_ref_to->dev_state->last_flush_gen) {
+			printk(KERN_INFO "btrfs: attempt to write superblock"
+			       " which references block %c @%llu (%s/%llu/%d)"
+			       " which is not flushed out of disk's write cache"
+			       " (block flush_gen=%llu,"
+			       " dev->flush_gen=%llu)!\n",
+			       btrfsic_get_block_type(state, l->block_ref_to),
+			       (unsigned long long)
+			       l->block_ref_to->logical_bytenr,
+			       l->block_ref_to->dev_state->name,
+			       (unsigned long long)l->block_ref_to->dev_bytenr,
+			       l->block_ref_to->mirror_num,
+			       (unsigned long long)block->flush_gen,
+			       (unsigned long long)
+			       l->block_ref_to->dev_state->last_flush_gen);
+			ret = -1;
+		} else if (-1 == btrfsic_check_all_ref_blocks(state,
+							      l->block_ref_to,
+							      recursion_level +
+							      1)) {
+			ret = -1;
+		}
+	}
+
+	return ret;
+}
+
+static int btrfsic_is_block_ref_by_superblock(
+		const struct btrfsic_state *state,
+		const struct btrfsic_block *block,
+		int recursion_level)
+{
+	struct list_head *elem_ref_from;
+
+	if (recursion_level >= 3 + BTRFS_MAX_LEVEL) {
+		/* refer to comment at "abort cyclic linkage (case 1)" */
+		if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
+			printk(KERN_INFO
+			       "btrfsic: abort cyclic linkage (case 2).\n");
+
+		return 0;
+	}
+
+	/*
+	 * This algorithm is recursive because the amount of used stack space
+	 * is very small and the max recursion depth is limited.
+	 */
+	list_for_each(elem_ref_from, &block->ref_from_list) {
+		const struct btrfsic_block_link *const l =
+		    list_entry(elem_ref_from, struct btrfsic_block_link,
+			       node_ref_from);
+
+		if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
+			printk(KERN_INFO
+			       "rl=%d, %c @%llu (%s/%llu/%d)"
+			       " is ref %u* from %c @%llu (%s/%llu/%d)\n",
+			       recursion_level,
+			       btrfsic_get_block_type(state, block),
+			       (unsigned long long)block->logical_bytenr,
+			       block->dev_state->name,
+			       (unsigned long long)block->dev_bytenr,
+			       block->mirror_num,
+			       l->ref_cnt,
+			       btrfsic_get_block_type(state, l->block_ref_from),
+			       (unsigned long long)
+			       l->block_ref_from->logical_bytenr,
+			       l->block_ref_from->dev_state->name,
+			       (unsigned long long)
+			       l->block_ref_from->dev_bytenr,
+			       l->block_ref_from->mirror_num);
+		if (l->block_ref_from->is_superblock &&
+		    state->latest_superblock->dev_bytenr ==
+		    l->block_ref_from->dev_bytenr &&
+		    state->latest_superblock->dev_state->bdev ==
+		    l->block_ref_from->dev_state->bdev)
+			return 1;
+		else if (btrfsic_is_block_ref_by_superblock(state,
+							    l->block_ref_from,
+							    recursion_level +
+							    1))
+			return 1;
+	}
+
+	return 0;
+}
+
+static void btrfsic_print_add_link(const struct btrfsic_state *state,
+				   const struct btrfsic_block_link *l)
+{
+	printk(KERN_INFO
+	       "Add %u* link from %c @%llu (%s/%llu/%d)"
+	       " to %c @%llu (%s/%llu/%d).\n",
+	       l->ref_cnt,
+	       btrfsic_get_block_type(state, l->block_ref_from),
+	       (unsigned long long)l->block_ref_from->logical_bytenr,
+	       l->block_ref_from->dev_state->name,
+	       (unsigned long long)l->block_ref_from->dev_bytenr,
+	       l->block_ref_from->mirror_num,
+	       btrfsic_get_block_type(state, l->block_ref_to),
+	       (unsigned long long)l->block_ref_to->logical_bytenr,
+	       l->block_ref_to->dev_state->name,
+	       (unsigned long long)l->block_ref_to->dev_bytenr,
+	       l->block_ref_to->mirror_num);
+}
+
+static void btrfsic_print_rem_link(const struct btrfsic_state *state,
+				   const struct btrfsic_block_link *l)
+{
+	printk(KERN_INFO
+	       "Rem %u* link from %c @%llu (%s/%llu/%d)"
+	       " to %c @%llu (%s/%llu/%d).\n",
+	       l->ref_cnt,
+	       btrfsic_get_block_type(state, l->block_ref_from),
+	       (unsigned long long)l->block_ref_from->logical_bytenr,
+	       l->block_ref_from->dev_state->name,
+	       (unsigned long long)l->block_ref_from->dev_bytenr,
+	       l->block_ref_from->mirror_num,
+	       btrfsic_get_block_type(state, l->block_ref_to),
+	       (unsigned long long)l->block_ref_to->logical_bytenr,
+	       l->block_ref_to->dev_state->name,
+	       (unsigned long long)l->block_ref_to->dev_bytenr,
+	       l->block_ref_to->mirror_num);
+}
+
+static char btrfsic_get_block_type(const struct btrfsic_state *state,
+				   const struct btrfsic_block *block)
+{
+	if (block->is_superblock &&
+	    state->latest_superblock->dev_bytenr == block->dev_bytenr &&
+	    state->latest_superblock->dev_state->bdev == block->dev_state->bdev)
+		return 'S';
+	else if (block->is_superblock)
+		return 's';
+	else if (block->is_metadata)
+		return 'M';
+	else
+		return 'D';
+}
+
+static void btrfsic_dump_tree(const struct btrfsic_state *state)
+{
+	btrfsic_dump_tree_sub(state, state->latest_superblock, 0);
+}
+
+static void btrfsic_dump_tree_sub(const struct btrfsic_state *state,
+				  const struct btrfsic_block *block,
+				  int indent_level)
+{
+	struct list_head *elem_ref_to;
+	int indent_add;
+	static char buf[80];
+	int cursor_position;
+
+	/*
+	 * Should better fill an on-stack buffer with a complete line and
+	 * dump it at once when it is time to print a newline character.
+	 */
+
+	/*
+	 * This algorithm is recursive because the amount of used stack space
+	 * is very small and the max recursion depth is limited.
+	 */
+	indent_add = sprintf(buf, "%c-%llu(%s/%llu/%d)",
+			     btrfsic_get_block_type(state, block),
+			     (unsigned long long)block->logical_bytenr,
+			     block->dev_state->name,
+			     (unsigned long long)block->dev_bytenr,
+			     block->mirror_num);
+	if (indent_level + indent_add > BTRFSIC_TREE_DUMP_MAX_INDENT_LEVEL) {
+		printk("[...]\n");
+		return;
+	}
+	printk(buf);
+	indent_level += indent_add;
+	if (list_empty(&block->ref_to_list)) {
+		printk("\n");
+		return;
+	}
+	if (block->mirror_num > 1 &&
+	    !(state->print_mask & BTRFSIC_PRINT_MASK_TREE_WITH_ALL_MIRRORS)) {
+		printk(" [...]\n");
+		return;
+	}
+
+	cursor_position = indent_level;
+	list_for_each(elem_ref_to, &block->ref_to_list) {
+		const struct btrfsic_block_link *const l =
+		    list_entry(elem_ref_to, struct btrfsic_block_link,
+			       node_ref_to);
+
+		while (cursor_position < indent_level) {
+			printk(" ");
+			cursor_position++;
+		}
+		if (l->ref_cnt > 1)
+			indent_add = sprintf(buf, " %d*--> ", l->ref_cnt);
+		else
+			indent_add = sprintf(buf, " --> ");
+		if (indent_level + indent_add >
+		    BTRFSIC_TREE_DUMP_MAX_INDENT_LEVEL) {
+			printk("[...]\n");
+			cursor_position = 0;
+			continue;
+		}
+
+		printk(buf);
+
+		btrfsic_dump_tree_sub(state, l->block_ref_to,
+				      indent_level + indent_add);
+		cursor_position = 0;
+	}
+}
+
+static struct btrfsic_block_link *btrfsic_block_link_lookup_or_add(
+		struct btrfsic_state *state,
+		struct btrfsic_block_data_ctx *next_block_ctx,
+		struct btrfsic_block *next_block,
+		struct btrfsic_block *from_block,
+		u64 parent_generation)
+{
+	struct btrfsic_block_link *l;
+
+	l = btrfsic_block_link_hashtable_lookup(next_block_ctx->dev->bdev,
+						next_block_ctx->dev_bytenr,
+						from_block->dev_state->bdev,
+						from_block->dev_bytenr,
+						&state->block_link_hashtable);
+	if (NULL == l) {
+		l = btrfsic_block_link_alloc();
+		if (NULL == l) {
+			printk(KERN_INFO
+			       "btrfsic: error, kmalloc" " failed!\n");
+			return NULL;
+		}
+
+		l->block_ref_to = next_block;
+		l->block_ref_from = from_block;
+		l->ref_cnt = 1;
+		l->parent_generation = parent_generation;
+
+		if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
+			btrfsic_print_add_link(state, l);
+
+		list_add(&l->node_ref_to, &from_block->ref_to_list);
+		list_add(&l->node_ref_from, &next_block->ref_from_list);
+
+		btrfsic_block_link_hashtable_add(l,
+						 &state->block_link_hashtable);
+	} else {
+		l->ref_cnt++;
+		l->parent_generation = parent_generation;
+		if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
+			btrfsic_print_add_link(state, l);
+	}
+
+	return l;
+}
+
+static struct btrfsic_block *btrfsic_block_lookup_or_add(
+		struct btrfsic_state *state,
+		struct btrfsic_block_data_ctx *block_ctx,
+		const char *additional_string,
+		int is_metadata,
+		int is_iodone,
+		int never_written,
+		int mirror_num,
+		int *was_created)
+{
+	struct btrfsic_block *block;
+
+	block = btrfsic_block_hashtable_lookup(block_ctx->dev->bdev,
+					       block_ctx->dev_bytenr,
+					       &state->block_hashtable);
+	if (NULL == block) {
+		struct btrfsic_dev_state *dev_state;
+
+		block = btrfsic_block_alloc();
+		if (NULL == block) {
+			printk(KERN_INFO "btrfsic: error, kmalloc failed!\n");
+			return NULL;
+		}
+		dev_state = btrfsic_dev_state_lookup(block_ctx->dev->bdev);
+		if (NULL == dev_state) {
+			printk(KERN_INFO
+			       "btrfsic: error, lookup dev_state failed!\n");
+			btrfsic_block_free(block);
+			return NULL;
+		}
+		block->dev_state = dev_state;
+		block->dev_bytenr = block_ctx->dev_bytenr;
+		block->logical_bytenr = block_ctx->start;
+		block->is_metadata = is_metadata;
+		block->is_iodone = is_iodone;
+		block->never_written = never_written;
+		block->mirror_num = mirror_num;
+		if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
+			printk(KERN_INFO
+			       "New %s%c-block @%llu (%s/%llu/%d)\n",
+			       additional_string,
+			       btrfsic_get_block_type(state, block),
+			       (unsigned long long)block->logical_bytenr,
+			       dev_state->name,
+			       (unsigned long long)block->dev_bytenr,
+			       mirror_num);
+		list_add(&block->all_blocks_node, &state->all_blocks_list);
+		btrfsic_block_hashtable_add(block, &state->block_hashtable);
+		if (NULL != was_created)
+			*was_created = 1;
+	} else {
+		if (NULL != was_created)
+			*was_created = 0;
+	}
+
+	return block;
+}
+
+static void btrfsic_cmp_log_and_dev_bytenr(struct btrfsic_state *state,
+					   u64 bytenr,
+					   struct btrfsic_dev_state *dev_state,
+					   u64 dev_bytenr, char *data)
+{
+	int num_copies;
+	int mirror_num;
+	int ret;
+	struct btrfsic_block_data_ctx block_ctx;
+	int match = 0;
+
+	num_copies = btrfs_num_copies(&state->root->fs_info->mapping_tree,
+				      bytenr, PAGE_SIZE);
+
+	for (mirror_num = 1; mirror_num <= num_copies; mirror_num++) {
+		ret = btrfsic_map_block(state, bytenr, PAGE_SIZE,
+					&block_ctx, mirror_num);
+		if (ret) {
+			printk(KERN_INFO "btrfsic:"
+			       " btrfsic_map_block(logical @%llu,"
+			       " mirror %d) failed!\n",
+			       (unsigned long long)bytenr, mirror_num);
+			continue;
+		}
+
+		if (dev_state->bdev == block_ctx.dev->bdev &&
+		    dev_bytenr == block_ctx.dev_bytenr) {
+			match++;
+			btrfsic_release_block_ctx(&block_ctx);
+			break;
+		}
+		btrfsic_release_block_ctx(&block_ctx);
+	}
+
+	if (!match) {
+		printk(KERN_INFO "btrfs: attempt to write M-block which contains logical bytenr that doesn't map to dev+physical bytenr of submit_bio,"
+		       " buffer->log_bytenr=%llu, submit_bio(bdev=%s,"
+		       " phys_bytenr=%llu)!\n",
+		       (unsigned long long)bytenr, dev_state->name,
+		       (unsigned long long)dev_bytenr);
+		for (mirror_num = 1; mirror_num <= num_copies; mirror_num++) {
+			ret = btrfsic_map_block(state, bytenr, PAGE_SIZE,
+						&block_ctx, mirror_num);
+			if (ret)
+				continue;
+
+			printk(KERN_INFO "Read logical bytenr @%llu maps to"
+			       " (%s/%llu/%d)\n",
+			       (unsigned long long)bytenr,
+			       block_ctx.dev->name,
+			       (unsigned long long)block_ctx.dev_bytenr,
+			       mirror_num);
+		}
+		WARN_ON(1);
+	}
+}
+
+static struct btrfsic_dev_state *btrfsic_dev_state_lookup(
+		struct block_device *bdev)
+{
+	struct btrfsic_dev_state *ds;
+
+	ds = btrfsic_dev_state_hashtable_lookup(bdev,
+						&btrfsic_dev_state_hashtable);
+	return ds;
+}
+
+int btrfsic_submit_bh(int rw, struct buffer_head *bh)
+{
+	struct btrfsic_dev_state *dev_state;
+
+	if (!btrfsic_is_initialized)
+		return submit_bh(rw, bh);
+
+	mutex_lock(&btrfsic_mutex);
+	/* since btrfsic_submit_bh() might also be called before
+	 * btrfsic_mount(), this might return NULL */
+	dev_state = btrfsic_dev_state_lookup(bh->b_bdev);
+
+	/* Only called to write the superblock (incl. FLUSH/FUA) */
+	if (NULL != dev_state &&
+	    (rw & WRITE) && bh->b_size > 0) {
+		u64 dev_bytenr;
+
+		dev_bytenr = 4096 * bh->b_blocknr;
+		if (dev_state->state->print_mask &
+		    BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
+			printk(KERN_INFO
+			       "submit_bh(rw=0x%x, blocknr=%lu (bytenr %llu),"
+			       " size=%lu, data=%p, bdev=%p)\n",
+			       rw, bh->b_blocknr,
+			       (unsigned long long)dev_bytenr, bh->b_size,
+			       bh->b_data, bh->b_bdev);
+		btrfsic_process_written_block(dev_state, dev_bytenr,
+					      bh->b_data, bh->b_size, NULL,
+					      NULL, bh, rw);
+	} else if (NULL != dev_state && (rw & REQ_FLUSH)) {
+		if (dev_state->state->print_mask &
+		    BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
+			printk(KERN_INFO
+			       "submit_bh(rw=0x%x) FLUSH, bdev=%p)\n",
+			       rw, bh->b_bdev);
+		if (!dev_state->dummy_block_for_bio_bh_flush.is_iodone) {
+			if ((dev_state->state->print_mask &
+			     (BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH |
+			      BTRFSIC_PRINT_MASK_VERBOSE)))
+				printk(KERN_INFO
+				       "btrfsic_submit_bh(%s) with FLUSH"
+				       " but dummy block already in use"
+				       " (ignored)!\n",
+				       dev_state->name);
+		} else {
+			struct btrfsic_block *const block =
+				&dev_state->dummy_block_for_bio_bh_flush;
+
+			block->is_iodone = 0;
+			block->never_written = 0;
+			block->iodone_w_error = 0;
+			block->flush_gen = dev_state->last_flush_gen + 1;
+			block->submit_bio_bh_rw = rw;
+			block->orig_bio_bh_private = bh->b_private;
+			block->orig_bio_bh_end_io.bh = bh->b_end_io;
+			block->next_in_same_bio = NULL;
+			bh->b_private = block;
+			bh->b_end_io = btrfsic_bh_end_io;
+		}
+	}
+	mutex_unlock(&btrfsic_mutex);
+	return submit_bh(rw, bh);
+}
+
+void btrfsic_submit_bio(int rw, struct bio *bio)
+{
+	struct btrfsic_dev_state *dev_state;
+
+	if (!btrfsic_is_initialized) {
+		submit_bio(rw, bio);
+		return;
+	}
+
+	mutex_lock(&btrfsic_mutex);
+	/* since btrfsic_submit_bio() is also called before
+	 * btrfsic_mount(), this might return NULL */
+	dev_state = btrfsic_dev_state_lookup(bio->bi_bdev);
+	if (NULL != dev_state &&
+	    (rw & WRITE) && NULL != bio->bi_io_vec) {
+		unsigned int i;
+		u64 dev_bytenr;
+		int bio_is_patched;
+
+		dev_bytenr = 512 * bio->bi_sector;
+		bio_is_patched = 0;
+		if (dev_state->state->print_mask &
+		    BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
+			printk(KERN_INFO
+			       "submit_bio(rw=0x%x, bi_vcnt=%u,"
+			       " bi_sector=%lu (bytenr %llu), bi_bdev=%p)\n",
+			       rw, bio->bi_vcnt, bio->bi_sector,
+			       (unsigned long long)dev_bytenr,
+			       bio->bi_bdev);
+
+		for (i = 0; i < bio->bi_vcnt; i++) {
+			u8 *mapped_data;
+
+			mapped_data = kmap(bio->bi_io_vec[i].bv_page);
+			if ((BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH |
+			     BTRFSIC_PRINT_MASK_VERBOSE) ==
+			    (dev_state->state->print_mask &
+			     (BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH |
+			      BTRFSIC_PRINT_MASK_VERBOSE)))
+				printk(KERN_INFO
+				       "#%u: page=%p, mapped=%p, len=%u,"
+				       " offset=%u\n",
+				       i, bio->bi_io_vec[i].bv_page,
+				       mapped_data,
+				       bio->bi_io_vec[i].bv_len,
+				       bio->bi_io_vec[i].bv_offset);
+			btrfsic_process_written_block(dev_state, dev_bytenr,
+						      mapped_data,
+						      bio->bi_io_vec[i].bv_len,
+						      bio, &bio_is_patched,
+						      NULL, rw);
+			kunmap(bio->bi_io_vec[i].bv_page);
+			dev_bytenr += bio->bi_io_vec[i].bv_len;
+		}
+	} else if (NULL != dev_state && (rw & REQ_FLUSH)) {
+		if (dev_state->state->print_mask &
+		    BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
+			printk(KERN_INFO
+			       "submit_bio(rw=0x%x) FLUSH, bdev=%p)\n",
+			       rw, bio->bi_bdev);
+		if (!dev_state->dummy_block_for_bio_bh_flush.is_iodone) {
+			if ((dev_state->state->print_mask &
+			     (BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH |
+			      BTRFSIC_PRINT_MASK_VERBOSE)))
+				printk(KERN_INFO
+				       "btrfsic_submit_bio(%s) with FLUSH"
+				       " but dummy block already in use"
+				       " (ignored)!\n",
+				       dev_state->name);
+		} else {
+			struct btrfsic_block *const block =
+				&dev_state->dummy_block_for_bio_bh_flush;
+
+			block->is_iodone = 0;
+			block->never_written = 0;
+			block->iodone_w_error = 0;
+			block->flush_gen = dev_state->last_flush_gen + 1;
+			block->submit_bio_bh_rw = rw;
+			block->orig_bio_bh_private = bio->bi_private;
+			block->orig_bio_bh_end_io.bio = bio->bi_end_io;
+			block->next_in_same_bio = NULL;
+			bio->bi_private = block;
+			bio->bi_end_io = btrfsic_bio_end_io;
+		}
+	}
+	mutex_unlock(&btrfsic_mutex);
+
+	submit_bio(rw, bio);
+}
+
+int btrfsic_mount(struct btrfs_root *root,
+		  struct btrfs_fs_devices *fs_devices,
+		  int including_extent_data, u32 print_mask)
+{
+	int ret;
+	struct btrfsic_state *state;
+	struct list_head *dev_head = &fs_devices->devices;
+	struct btrfs_device *device;
+
+	state = kzalloc(sizeof(*state), GFP_NOFS);
+	if (NULL == state) {
+		printk(KERN_INFO "btrfs check-integrity: kmalloc() failed!\n");
+		return -1;
+	}
+
+	if (!btrfsic_is_initialized) {
+		mutex_init(&btrfsic_mutex);
+		btrfsic_dev_state_hashtable_init(&btrfsic_dev_state_hashtable);
+		btrfsic_is_initialized = 1;
+	}
+	mutex_lock(&btrfsic_mutex);
+	state->root = root;
+	state->print_mask = print_mask;
+	state->include_extent_data = including_extent_data;
+	state->csum_size = 0;
+	INIT_LIST_HEAD(&state->all_blocks_list);
+	btrfsic_block_hashtable_init(&state->block_hashtable);
+	btrfsic_block_link_hashtable_init(&state->block_link_hashtable);
+	state->max_superblock_generation = 0;
+	state->latest_superblock = NULL;
+
+	list_for_each_entry(device, dev_head, dev_list) {
+		struct btrfsic_dev_state *ds;
+		char *p;
+
+		if (!device->bdev || !device->name)
+			continue;
+
+		ds = btrfsic_dev_state_alloc();
+		if (NULL == ds) {
+			printk(KERN_INFO
+			       "btrfs check-integrity: kmalloc() failed!\n");
+			mutex_unlock(&btrfsic_mutex);
+			return -1;
+		}
+		ds->bdev = device->bdev;
+		ds->state = state;
+		bdevname(ds->bdev, ds->name);
+		ds->name[BDEVNAME_SIZE - 1] = '\0';
+		for (p = ds->name; *p != '\0'; p++);
+		while (p > ds->name && *p != '/')
+			p--;
+		if (*p == '/')
+			p++;
+		strlcpy(ds->name, p, sizeof(ds->name));
+		btrfsic_dev_state_hashtable_add(ds,
+						&btrfsic_dev_state_hashtable);
+	}
+
+	ret = btrfsic_process_superblock(state, fs_devices);
+	if (0 != ret) {
+		mutex_unlock(&btrfsic_mutex);
+		btrfsic_unmount(root, fs_devices);
+		return ret;
+	}
+
+	if (state->print_mask & BTRFSIC_PRINT_MASK_INITIAL_DATABASE)
+		btrfsic_dump_database(state);
+	if (state->print_mask & BTRFSIC_PRINT_MASK_INITIAL_TREE)
+		btrfsic_dump_tree(state);
+
+	mutex_unlock(&btrfsic_mutex);
+	return 0;
+}
+
+void btrfsic_unmount(struct btrfs_root *root,
+		     struct btrfs_fs_devices *fs_devices)
+{
+	struct list_head *elem_all;
+	struct list_head *tmp_all;
+	struct btrfsic_state *state;
+	struct list_head *dev_head = &fs_devices->devices;
+	struct btrfs_device *device;
+
+	if (!btrfsic_is_initialized)
+		return;
+
+	mutex_lock(&btrfsic_mutex);
+
+	state = NULL;
+	list_for_each_entry(device, dev_head, dev_list) {
+		struct btrfsic_dev_state *ds;
+
+		if (!device->bdev || !device->name)
+			continue;
+
+		ds = btrfsic_dev_state_hashtable_lookup(
+				device->bdev,
+				&btrfsic_dev_state_hashtable);
+		if (NULL != ds) {
+			state = ds->state;
+			btrfsic_dev_state_hashtable_remove(ds);
+			btrfsic_dev_state_free(ds);
+		}
+	}
+
+	if (NULL == state) {
+		printk(KERN_INFO
+		       "btrfsic: error, cannot find state information"
+		       " on umount!\n");
+		mutex_unlock(&btrfsic_mutex);
+		return;
+	}
+
+	/*
+	 * Don't care about keeping the lists' state up to date,
+	 * just free all memory that was allocated dynamically.
+	 * Free the blocks and the block_links.
+	 */
+	list_for_each_safe(elem_all, tmp_all, &state->all_blocks_list) {
+		struct btrfsic_block *const b_all =
+		    list_entry(elem_all, struct btrfsic_block,
+			       all_blocks_node);
+		struct list_head *elem_ref_to;
+		struct list_head *tmp_ref_to;
+
+		list_for_each_safe(elem_ref_to, tmp_ref_to,
+				   &b_all->ref_to_list) {
+			struct btrfsic_block_link *const l =
+			    list_entry(elem_ref_to,
+				       struct btrfsic_block_link,
+				       node_ref_to);
+
+			if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
+				btrfsic_print_rem_link(state, l);
+
+			l->ref_cnt--;
+			if (0 == l->ref_cnt)
+				btrfsic_block_link_free(l);
+		}
+
+		if (b_all->is_iodone)
+			btrfsic_block_free(b_all);
+		else
+			printk(KERN_INFO "btrfs: attempt to free %c-block"
+			       " @%llu (%s/%llu/%d) on umount which is"
+			       " not yet iodone!\n",
+			       btrfsic_get_block_type(state, b_all),
+			       (unsigned long long)b_all->logical_bytenr,
+			       b_all->dev_state->name,
+			       (unsigned long long)b_all->dev_bytenr,
+			       b_all->mirror_num);
+	}
+
+	mutex_unlock(&btrfsic_mutex);
+
+	kfree(state);
+}
diff --git a/fs/btrfs/check-integrity.h b/fs/btrfs/check-integrity.h
new file mode 100644
index 0000000..8b59175
--- /dev/null
+++ b/fs/btrfs/check-integrity.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) STRATO AG 2011.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License v2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 021110-1307, USA.
+ */
+
+#if !defined(__BTRFS_CHECK_INTEGRITY__)
+#define __BTRFS_CHECK_INTEGRITY__
+
+#ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY
+int btrfsic_submit_bh(int rw, struct buffer_head *bh);
+void btrfsic_submit_bio(int rw, struct bio *bio);
+#else
+#define btrfsic_submit_bh submit_bh
+#define btrfsic_submit_bio submit_bio
+#endif
+
+int btrfsic_mount(struct btrfs_root *root,
+		  struct btrfs_fs_devices *fs_devices,
+		  int including_extent_data, u32 print_mask);
+void btrfsic_unmount(struct btrfs_root *root,
+		     struct btrfs_fs_devices *fs_devices);
+
+#endif
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index dede441..0639a55 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -240,7 +240,7 @@
 
 	cow = btrfs_alloc_free_block(trans, root, buf->len, 0,
 				     new_root_objectid, &disk_key, level,
-				     buf->start, 0);
+				     buf->start, 0, 1);
 	if (IS_ERR(cow))
 		return PTR_ERR(cow);
 
@@ -261,9 +261,9 @@
 
 	WARN_ON(btrfs_header_generation(buf) > trans->transid);
 	if (new_root_objectid == BTRFS_TREE_RELOC_OBJECTID)
-		ret = btrfs_inc_ref(trans, root, cow, 1);
+		ret = btrfs_inc_ref(trans, root, cow, 1, 1);
 	else
-		ret = btrfs_inc_ref(trans, root, cow, 0);
+		ret = btrfs_inc_ref(trans, root, cow, 0, 1);
 
 	if (ret)
 		return ret;
@@ -350,14 +350,14 @@
 		if ((owner == root->root_key.objectid ||
 		     root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID) &&
 		    !(flags & BTRFS_BLOCK_FLAG_FULL_BACKREF)) {
-			ret = btrfs_inc_ref(trans, root, buf, 1);
+			ret = btrfs_inc_ref(trans, root, buf, 1, 1);
 			BUG_ON(ret);
 
 			if (root->root_key.objectid ==
 			    BTRFS_TREE_RELOC_OBJECTID) {
-				ret = btrfs_dec_ref(trans, root, buf, 0);
+				ret = btrfs_dec_ref(trans, root, buf, 0, 1);
 				BUG_ON(ret);
-				ret = btrfs_inc_ref(trans, root, cow, 1);
+				ret = btrfs_inc_ref(trans, root, cow, 1, 1);
 				BUG_ON(ret);
 			}
 			new_flags |= BTRFS_BLOCK_FLAG_FULL_BACKREF;
@@ -365,9 +365,9 @@
 
 			if (root->root_key.objectid ==
 			    BTRFS_TREE_RELOC_OBJECTID)
-				ret = btrfs_inc_ref(trans, root, cow, 1);
+				ret = btrfs_inc_ref(trans, root, cow, 1, 1);
 			else
-				ret = btrfs_inc_ref(trans, root, cow, 0);
+				ret = btrfs_inc_ref(trans, root, cow, 0, 1);
 			BUG_ON(ret);
 		}
 		if (new_flags != 0) {
@@ -381,11 +381,11 @@
 		if (flags & BTRFS_BLOCK_FLAG_FULL_BACKREF) {
 			if (root->root_key.objectid ==
 			    BTRFS_TREE_RELOC_OBJECTID)
-				ret = btrfs_inc_ref(trans, root, cow, 1);
+				ret = btrfs_inc_ref(trans, root, cow, 1, 1);
 			else
-				ret = btrfs_inc_ref(trans, root, cow, 0);
+				ret = btrfs_inc_ref(trans, root, cow, 0, 1);
 			BUG_ON(ret);
-			ret = btrfs_dec_ref(trans, root, buf, 1);
+			ret = btrfs_dec_ref(trans, root, buf, 1, 1);
 			BUG_ON(ret);
 		}
 		clean_tree_block(trans, root, buf);
@@ -446,7 +446,7 @@
 
 	cow = btrfs_alloc_free_block(trans, root, buf->len, parent_start,
 				     root->root_key.objectid, &disk_key,
-				     level, search_start, empty_size);
+				     level, search_start, empty_size, 1);
 	if (IS_ERR(cow))
 		return PTR_ERR(cow);
 
@@ -484,7 +484,7 @@
 		rcu_assign_pointer(root->node, cow);
 
 		btrfs_free_tree_block(trans, root, buf, parent_start,
-				      last_ref);
+				      last_ref, 1);
 		free_extent_buffer(buf);
 		add_root_to_dirty_list(root);
 	} else {
@@ -500,7 +500,7 @@
 					      trans->transid);
 		btrfs_mark_buffer_dirty(parent);
 		btrfs_free_tree_block(trans, root, buf, parent_start,
-				      last_ref);
+				      last_ref, 1);
 	}
 	if (unlock_orig)
 		btrfs_tree_unlock(buf);
@@ -957,7 +957,7 @@
 		free_extent_buffer(mid);
 
 		root_sub_used(root, mid->len);
-		btrfs_free_tree_block(trans, root, mid, 0, 1);
+		btrfs_free_tree_block(trans, root, mid, 0, 1, 0);
 		/* once for the root ptr */
 		free_extent_buffer(mid);
 		return 0;
@@ -1015,7 +1015,7 @@
 			if (wret)
 				ret = wret;
 			root_sub_used(root, right->len);
-			btrfs_free_tree_block(trans, root, right, 0, 1);
+			btrfs_free_tree_block(trans, root, right, 0, 1, 0);
 			free_extent_buffer(right);
 			right = NULL;
 		} else {
@@ -1055,7 +1055,7 @@
 		if (wret)
 			ret = wret;
 		root_sub_used(root, mid->len);
-		btrfs_free_tree_block(trans, root, mid, 0, 1);
+		btrfs_free_tree_block(trans, root, mid, 0, 1, 0);
 		free_extent_buffer(mid);
 		mid = NULL;
 	} else {
@@ -2089,7 +2089,7 @@
 
 	c = btrfs_alloc_free_block(trans, root, root->nodesize, 0,
 				   root->root_key.objectid, &lower_key,
-				   level, root->node->start, 0);
+				   level, root->node->start, 0, 0);
 	if (IS_ERR(c))
 		return PTR_ERR(c);
 
@@ -2216,7 +2216,7 @@
 
 	split = btrfs_alloc_free_block(trans, root, root->nodesize, 0,
 					root->root_key.objectid,
-					&disk_key, level, c->start, 0);
+					&disk_key, level, c->start, 0, 0);
 	if (IS_ERR(split))
 		return PTR_ERR(split);
 
@@ -2970,7 +2970,7 @@
 
 	right = btrfs_alloc_free_block(trans, root, root->leafsize, 0,
 					root->root_key.objectid,
-					&disk_key, 0, l->start, 0);
+					&disk_key, 0, l->start, 0, 0);
 	if (IS_ERR(right))
 		return PTR_ERR(right);
 
@@ -3781,7 +3781,7 @@
 
 	root_sub_used(root, leaf->len);
 
-	btrfs_free_tree_block(trans, root, leaf, 0, 1);
+	btrfs_free_tree_block(trans, root, leaf, 0, 1, 0);
 	return 0;
 }
 /*
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 6738503..27ebe61 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -86,6 +86,9 @@
 /* holds checksums of all the data extents */
 #define BTRFS_CSUM_TREE_OBJECTID 7ULL
 
+/* for storing balance parameters in the root tree */
+#define BTRFS_BALANCE_OBJECTID -4ULL
+
 /* orhpan objectid for tracking unlinked/truncated files */
 #define BTRFS_ORPHAN_OBJECTID -5ULL
 
@@ -692,6 +695,54 @@
 	__le16 name_len;
 } __attribute__ ((__packed__));
 
+struct btrfs_disk_balance_args {
+	/*
+	 * profiles to operate on, single is denoted by
+	 * BTRFS_AVAIL_ALLOC_BIT_SINGLE
+	 */
+	__le64 profiles;
+
+	/* usage filter */
+	__le64 usage;
+
+	/* devid filter */
+	__le64 devid;
+
+	/* devid subset filter [pstart..pend) */
+	__le64 pstart;
+	__le64 pend;
+
+	/* btrfs virtual address space subset filter [vstart..vend) */
+	__le64 vstart;
+	__le64 vend;
+
+	/*
+	 * profile to convert to, single is denoted by
+	 * BTRFS_AVAIL_ALLOC_BIT_SINGLE
+	 */
+	__le64 target;
+
+	/* BTRFS_BALANCE_ARGS_* */
+	__le64 flags;
+
+	__le64 unused[8];
+} __attribute__ ((__packed__));
+
+/*
+ * store balance parameters to disk so that balance can be properly
+ * resumed after crash or unmount
+ */
+struct btrfs_balance_item {
+	/* BTRFS_BALANCE_* */
+	__le64 flags;
+
+	struct btrfs_disk_balance_args data;
+	struct btrfs_disk_balance_args meta;
+	struct btrfs_disk_balance_args sys;
+
+	__le64 unused[4];
+} __attribute__ ((__packed__));
+
 #define BTRFS_FILE_EXTENT_INLINE 0
 #define BTRFS_FILE_EXTENT_REG 1
 #define BTRFS_FILE_EXTENT_PREALLOC 2
@@ -751,14 +802,32 @@
 } __attribute__ ((__packed__));
 
 /* different types of block groups (and chunks) */
-#define BTRFS_BLOCK_GROUP_DATA     (1 << 0)
-#define BTRFS_BLOCK_GROUP_SYSTEM   (1 << 1)
-#define BTRFS_BLOCK_GROUP_METADATA (1 << 2)
-#define BTRFS_BLOCK_GROUP_RAID0    (1 << 3)
-#define BTRFS_BLOCK_GROUP_RAID1    (1 << 4)
-#define BTRFS_BLOCK_GROUP_DUP	   (1 << 5)
-#define BTRFS_BLOCK_GROUP_RAID10   (1 << 6)
-#define BTRFS_NR_RAID_TYPES	   5
+#define BTRFS_BLOCK_GROUP_DATA		(1ULL << 0)
+#define BTRFS_BLOCK_GROUP_SYSTEM	(1ULL << 1)
+#define BTRFS_BLOCK_GROUP_METADATA	(1ULL << 2)
+#define BTRFS_BLOCK_GROUP_RAID0		(1ULL << 3)
+#define BTRFS_BLOCK_GROUP_RAID1		(1ULL << 4)
+#define BTRFS_BLOCK_GROUP_DUP		(1ULL << 5)
+#define BTRFS_BLOCK_GROUP_RAID10	(1ULL << 6)
+#define BTRFS_BLOCK_GROUP_RESERVED	BTRFS_AVAIL_ALLOC_BIT_SINGLE
+#define BTRFS_NR_RAID_TYPES		5
+
+#define BTRFS_BLOCK_GROUP_TYPE_MASK	(BTRFS_BLOCK_GROUP_DATA |    \
+					 BTRFS_BLOCK_GROUP_SYSTEM |  \
+					 BTRFS_BLOCK_GROUP_METADATA)
+
+#define BTRFS_BLOCK_GROUP_PROFILE_MASK	(BTRFS_BLOCK_GROUP_RAID0 |   \
+					 BTRFS_BLOCK_GROUP_RAID1 |   \
+					 BTRFS_BLOCK_GROUP_DUP |     \
+					 BTRFS_BLOCK_GROUP_RAID10)
+/*
+ * We need a bit for restriper to be able to tell when chunks of type
+ * SINGLE are available.  This "extended" profile format is used in
+ * fs_info->avail_*_alloc_bits (in-memory) and balance item fields
+ * (on-disk).  The corresponding on-disk bit in chunk.type is reserved
+ * to avoid remappings between two formats in future.
+ */
+#define BTRFS_AVAIL_ALLOC_BIT_SINGLE	(1ULL << 48)
 
 struct btrfs_block_group_item {
 	__le64 used;
@@ -916,6 +985,7 @@
 struct reloc_control;
 struct btrfs_device;
 struct btrfs_fs_devices;
+struct btrfs_balance_control;
 struct btrfs_delayed_root;
 struct btrfs_fs_info {
 	u8 fsid[BTRFS_FSID_SIZE];
@@ -971,7 +1041,7 @@
 	 * is required instead of the faster short fsync log commits
 	 */
 	u64 last_trans_log_full_commit;
-	unsigned long mount_opt:20;
+	unsigned long mount_opt:21;
 	unsigned long compress_type:4;
 	u64 max_inline;
 	u64 alloc_start;
@@ -1132,12 +1202,23 @@
 	spinlock_t ref_cache_lock;
 	u64 total_ref_cache_size;
 
+	/*
+	 * these three are in extended format (availability of single
+	 * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other
+	 * types are denoted by corresponding BTRFS_BLOCK_GROUP_* bits)
+	 */
 	u64 avail_data_alloc_bits;
 	u64 avail_metadata_alloc_bits;
 	u64 avail_system_alloc_bits;
-	u64 data_alloc_profile;
-	u64 metadata_alloc_profile;
-	u64 system_alloc_profile;
+
+	/* restriper state */
+	spinlock_t balance_lock;
+	struct mutex balance_mutex;
+	atomic_t balance_running;
+	atomic_t balance_pause_req;
+	atomic_t balance_cancel_req;
+	struct btrfs_balance_control *balance_ctl;
+	wait_queue_head_t balance_wait_q;
 
 	unsigned data_chunk_allocations;
 	unsigned metadata_ratio;
@@ -1155,6 +1236,10 @@
 	int scrub_workers_refcnt;
 	struct btrfs_workers scrub_workers;
 
+#ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY
+	u32 check_integrity_print_mask;
+#endif
+
 	/* filesystem state */
 	u64 fs_state;
 
@@ -1383,6 +1468,8 @@
 #define BTRFS_DEV_ITEM_KEY	216
 #define BTRFS_CHUNK_ITEM_KEY	228
 
+#define BTRFS_BALANCE_ITEM_KEY	248
+
 /*
  * string items are for debugging.  They just store a short string of
  * data in the FS
@@ -1413,6 +1500,9 @@
 #define BTRFS_MOUNT_AUTO_DEFRAG		(1 << 16)
 #define BTRFS_MOUNT_INODE_MAP_CACHE	(1 << 17)
 #define BTRFS_MOUNT_RECOVERY		(1 << 18)
+#define BTRFS_MOUNT_SKIP_BALANCE	(1 << 19)
+#define BTRFS_MOUNT_CHECK_INTEGRITY	(1 << 20)
+#define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21)
 
 #define btrfs_clear_opt(o, opt)		((o) &= ~BTRFS_MOUNT_##opt)
 #define btrfs_set_opt(o, opt)		((o) |= BTRFS_MOUNT_##opt)
@@ -2077,8 +2167,86 @@
 BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup,
 		   num_devices, 64);
 
-/* struct btrfs_super_block */
+/* struct btrfs_balance_item */
+BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64);
 
+static inline void btrfs_balance_data(struct extent_buffer *eb,
+				      struct btrfs_balance_item *bi,
+				      struct btrfs_disk_balance_args *ba)
+{
+	read_eb_member(eb, bi, struct btrfs_balance_item, data, ba);
+}
+
+static inline void btrfs_set_balance_data(struct extent_buffer *eb,
+					  struct btrfs_balance_item *bi,
+					  struct btrfs_disk_balance_args *ba)
+{
+	write_eb_member(eb, bi, struct btrfs_balance_item, data, ba);
+}
+
+static inline void btrfs_balance_meta(struct extent_buffer *eb,
+				      struct btrfs_balance_item *bi,
+				      struct btrfs_disk_balance_args *ba)
+{
+	read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba);
+}
+
+static inline void btrfs_set_balance_meta(struct extent_buffer *eb,
+					  struct btrfs_balance_item *bi,
+					  struct btrfs_disk_balance_args *ba)
+{
+	write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba);
+}
+
+static inline void btrfs_balance_sys(struct extent_buffer *eb,
+				     struct btrfs_balance_item *bi,
+				     struct btrfs_disk_balance_args *ba)
+{
+	read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba);
+}
+
+static inline void btrfs_set_balance_sys(struct extent_buffer *eb,
+					 struct btrfs_balance_item *bi,
+					 struct btrfs_disk_balance_args *ba)
+{
+	write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba);
+}
+
+static inline void
+btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu,
+			       struct btrfs_disk_balance_args *disk)
+{
+	memset(cpu, 0, sizeof(*cpu));
+
+	cpu->profiles = le64_to_cpu(disk->profiles);
+	cpu->usage = le64_to_cpu(disk->usage);
+	cpu->devid = le64_to_cpu(disk->devid);
+	cpu->pstart = le64_to_cpu(disk->pstart);
+	cpu->pend = le64_to_cpu(disk->pend);
+	cpu->vstart = le64_to_cpu(disk->vstart);
+	cpu->vend = le64_to_cpu(disk->vend);
+	cpu->target = le64_to_cpu(disk->target);
+	cpu->flags = le64_to_cpu(disk->flags);
+}
+
+static inline void
+btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk,
+			       struct btrfs_balance_args *cpu)
+{
+	memset(disk, 0, sizeof(*disk));
+
+	disk->profiles = cpu_to_le64(cpu->profiles);
+	disk->usage = cpu_to_le64(cpu->usage);
+	disk->devid = cpu_to_le64(cpu->devid);
+	disk->pstart = cpu_to_le64(cpu->pstart);
+	disk->pend = cpu_to_le64(cpu->pend);
+	disk->vstart = cpu_to_le64(cpu->vstart);
+	disk->vend = cpu_to_le64(cpu->vend);
+	disk->target = cpu_to_le64(cpu->target);
+	disk->flags = cpu_to_le64(cpu->flags);
+}
+
+/* struct btrfs_super_block */
 BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64);
 BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64);
 BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block,
@@ -2196,7 +2364,7 @@
 	return btrfs_item_size(eb, e) - offset;
 }
 
-static inline struct btrfs_root *btrfs_sb(struct super_block *sb)
+static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb)
 {
 	return sb->s_fs_info;
 }
@@ -2277,11 +2445,11 @@
 					struct btrfs_root *root, u32 blocksize,
 					u64 parent, u64 root_objectid,
 					struct btrfs_disk_key *key, int level,
-					u64 hint, u64 empty_size);
+					u64 hint, u64 empty_size, int for_cow);
 void btrfs_free_tree_block(struct btrfs_trans_handle *trans,
 			   struct btrfs_root *root,
 			   struct extent_buffer *buf,
-			   u64 parent, int last_ref);
+			   u64 parent, int last_ref, int for_cow);
 struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans,
 					    struct btrfs_root *root,
 					    u64 bytenr, u32 blocksize,
@@ -2301,17 +2469,17 @@
 				  u64 search_end, struct btrfs_key *ins,
 				  u64 data);
 int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
-		  struct extent_buffer *buf, int full_backref);
+		  struct extent_buffer *buf, int full_backref, int for_cow);
 int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
-		  struct extent_buffer *buf, int full_backref);
+		  struct extent_buffer *buf, int full_backref, int for_cow);
 int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans,
 				struct btrfs_root *root,
 				u64 bytenr, u64 num_bytes, u64 flags,
 				int is_data);
 int btrfs_free_extent(struct btrfs_trans_handle *trans,
 		      struct btrfs_root *root,
-		      u64 bytenr, u64 num_bytes, u64 parent,
-		      u64 root_objectid, u64 owner, u64 offset);
+		      u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid,
+		      u64 owner, u64 offset, int for_cow);
 
 int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len);
 int btrfs_free_and_pin_reserved_extent(struct btrfs_root *root,
@@ -2323,7 +2491,7 @@
 int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
 			 struct btrfs_root *root,
 			 u64 bytenr, u64 num_bytes, u64 parent,
-			 u64 root_objectid, u64 owner, u64 offset);
+			 u64 root_objectid, u64 owner, u64 offset, int for_cow);
 
 int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans,
 				    struct btrfs_root *root);
@@ -2482,10 +2650,18 @@
 }
 
 int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path);
+static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p)
+{
+	++p->slots[0];
+	if (p->slots[0] >= btrfs_header_nritems(p->nodes[0]))
+		return btrfs_next_leaf(root, p);
+	return 0;
+}
 int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path);
 int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf);
 void btrfs_drop_snapshot(struct btrfs_root *root,
-			 struct btrfs_block_rsv *block_rsv, int update_ref);
+			 struct btrfs_block_rsv *block_rsv, int update_ref,
+			 int for_reloc);
 int btrfs_drop_subtree(struct btrfs_trans_handle *trans,
 			struct btrfs_root *root,
 			struct extent_buffer *node,
@@ -2500,6 +2676,7 @@
 }
 static inline void free_fs_info(struct btrfs_fs_info *fs_info)
 {
+	kfree(fs_info->balance_ctl);
 	kfree(fs_info->delayed_root);
 	kfree(fs_info->extent_root);
 	kfree(fs_info->tree_root);
@@ -2510,6 +2687,24 @@
 	kfree(fs_info->super_for_commit);
 	kfree(fs_info);
 }
+/**
+ * profile_is_valid - tests whether a given profile is valid and reduced
+ * @flags: profile to validate
+ * @extended: if true @flags is treated as an extended profile
+ */
+static inline int profile_is_valid(u64 flags, int extended)
+{
+	u64 mask = ~BTRFS_BLOCK_GROUP_PROFILE_MASK;
+
+	flags &= ~BTRFS_BLOCK_GROUP_TYPE_MASK;
+	if (extended)
+		mask &= ~BTRFS_AVAIL_ALLOC_BIT_SINGLE;
+
+	if (flags & mask)
+		return 0;
+	/* true if zero or exactly one bit set */
+	return (flags & (~flags + 1)) == flags;
+}
 
 /* root-item.c */
 int btrfs_find_root_ref(struct btrfs_root *tree_root,
diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c
index 9c1eccc..fe4cd0f 100644
--- a/fs/btrfs/delayed-inode.c
+++ b/fs/btrfs/delayed-inode.c
@@ -595,8 +595,12 @@
 
 	num_bytes = btrfs_calc_trans_metadata_size(root, 1);
 	ret = btrfs_block_rsv_migrate(src_rsv, dst_rsv, num_bytes);
-	if (!ret)
+	if (!ret) {
+		trace_btrfs_space_reservation(root->fs_info, "delayed_item",
+					      item->key.objectid,
+					      num_bytes, 1);
 		item->bytes_reserved = num_bytes;
+	}
 
 	return ret;
 }
@@ -610,6 +614,9 @@
 		return;
 
 	rsv = &root->fs_info->delayed_block_rsv;
+	trace_btrfs_space_reservation(root->fs_info, "delayed_item",
+				      item->key.objectid, item->bytes_reserved,
+				      0);
 	btrfs_block_rsv_release(root, rsv,
 				item->bytes_reserved);
 }
@@ -624,7 +631,7 @@
 	struct btrfs_block_rsv *dst_rsv;
 	u64 num_bytes;
 	int ret;
-	int release = false;
+	bool release = false;
 
 	src_rsv = trans->block_rsv;
 	dst_rsv = &root->fs_info->delayed_block_rsv;
@@ -651,8 +658,13 @@
 		 */
 		if (ret == -EAGAIN)
 			ret = -ENOSPC;
-		if (!ret)
+		if (!ret) {
 			node->bytes_reserved = num_bytes;
+			trace_btrfs_space_reservation(root->fs_info,
+						      "delayed_inode",
+						      btrfs_ino(inode),
+						      num_bytes, 1);
+		}
 		return ret;
 	} else if (src_rsv == &root->fs_info->delalloc_block_rsv) {
 		spin_lock(&BTRFS_I(inode)->lock);
@@ -707,11 +719,17 @@
 	 * reservation here.  I think it may be time for a documentation page on
 	 * how block rsvs. work.
 	 */
-	if (!ret)
+	if (!ret) {
+		trace_btrfs_space_reservation(root->fs_info, "delayed_inode",
+					      btrfs_ino(inode), num_bytes, 1);
 		node->bytes_reserved = num_bytes;
+	}
 
-	if (release)
+	if (release) {
+		trace_btrfs_space_reservation(root->fs_info, "delalloc",
+					      btrfs_ino(inode), num_bytes, 0);
 		btrfs_block_rsv_release(root, src_rsv, num_bytes);
+	}
 
 	return ret;
 }
@@ -725,6 +743,8 @@
 		return;
 
 	rsv = &root->fs_info->delayed_block_rsv;
+	trace_btrfs_space_reservation(root->fs_info, "delayed_inode",
+				      node->inode_id, node->bytes_reserved, 0);
 	btrfs_block_rsv_release(root, rsv,
 				node->bytes_reserved);
 	node->bytes_reserved = 0;
@@ -1372,13 +1392,6 @@
 		goto release_node;
 	}
 
-	ret = btrfs_delayed_item_reserve_metadata(trans, root, delayed_item);
-	/*
-	 * we have reserved enough space when we start a new transaction,
-	 * so reserving metadata failure is impossible
-	 */
-	BUG_ON(ret);
-
 	delayed_item->key.objectid = btrfs_ino(dir);
 	btrfs_set_key_type(&delayed_item->key, BTRFS_DIR_INDEX_KEY);
 	delayed_item->key.offset = index;
@@ -1391,6 +1404,14 @@
 	dir_item->type = type;
 	memcpy((char *)(dir_item + 1), name, name_len);
 
+	ret = btrfs_delayed_item_reserve_metadata(trans, root, delayed_item);
+	/*
+	 * we have reserved enough space when we start a new transaction,
+	 * so reserving metadata failure is impossible
+	 */
+	BUG_ON(ret);
+
+
 	mutex_lock(&delayed_node->mutex);
 	ret = __btrfs_add_delayed_insertion_item(delayed_node, delayed_item);
 	if (unlikely(ret)) {
diff --git a/fs/btrfs/delayed-ref.c b/fs/btrfs/delayed-ref.c
index 125cf76..66e4f29 100644
--- a/fs/btrfs/delayed-ref.c
+++ b/fs/btrfs/delayed-ref.c
@@ -101,6 +101,11 @@
 		return -1;
 	if (ref1->type > ref2->type)
 		return 1;
+	/* merging of sequenced refs is not allowed */
+	if (ref1->seq < ref2->seq)
+		return -1;
+	if (ref1->seq > ref2->seq)
+		return 1;
 	if (ref1->type == BTRFS_TREE_BLOCK_REF_KEY ||
 	    ref1->type == BTRFS_SHARED_BLOCK_REF_KEY) {
 		return comp_tree_refs(btrfs_delayed_node_to_tree_ref(ref2),
@@ -150,16 +155,22 @@
 
 /*
  * find an head entry based on bytenr. This returns the delayed ref
- * head if it was able to find one, or NULL if nothing was in that spot
+ * head if it was able to find one, or NULL if nothing was in that spot.
+ * If return_bigger is given, the next bigger entry is returned if no exact
+ * match is found.
  */
 static struct btrfs_delayed_ref_node *find_ref_head(struct rb_root *root,
 				  u64 bytenr,
-				  struct btrfs_delayed_ref_node **last)
+				  struct btrfs_delayed_ref_node **last,
+				  int return_bigger)
 {
-	struct rb_node *n = root->rb_node;
+	struct rb_node *n;
 	struct btrfs_delayed_ref_node *entry;
-	int cmp;
+	int cmp = 0;
 
+again:
+	n = root->rb_node;
+	entry = NULL;
 	while (n) {
 		entry = rb_entry(n, struct btrfs_delayed_ref_node, rb_node);
 		WARN_ON(!entry->in_tree);
@@ -182,6 +193,19 @@
 		else
 			return entry;
 	}
+	if (entry && return_bigger) {
+		if (cmp > 0) {
+			n = rb_next(&entry->rb_node);
+			if (!n)
+				n = rb_first(root);
+			entry = rb_entry(n, struct btrfs_delayed_ref_node,
+					 rb_node);
+			bytenr = entry->bytenr;
+			return_bigger = 0;
+			goto again;
+		}
+		return entry;
+	}
 	return NULL;
 }
 
@@ -209,6 +233,24 @@
 	return 0;
 }
 
+int btrfs_check_delayed_seq(struct btrfs_delayed_ref_root *delayed_refs,
+			    u64 seq)
+{
+	struct seq_list *elem;
+
+	assert_spin_locked(&delayed_refs->lock);
+	if (list_empty(&delayed_refs->seq_head))
+		return 0;
+
+	elem = list_first_entry(&delayed_refs->seq_head, struct seq_list, list);
+	if (seq >= elem->seq) {
+		pr_debug("holding back delayed_ref %llu, lowest is %llu (%p)\n",
+			 seq, elem->seq, delayed_refs);
+		return 1;
+	}
+	return 0;
+}
+
 int btrfs_find_ref_cluster(struct btrfs_trans_handle *trans,
 			   struct list_head *cluster, u64 start)
 {
@@ -223,20 +265,8 @@
 		node = rb_first(&delayed_refs->root);
 	} else {
 		ref = NULL;
-		find_ref_head(&delayed_refs->root, start, &ref);
+		find_ref_head(&delayed_refs->root, start + 1, &ref, 1);
 		if (ref) {
-			struct btrfs_delayed_ref_node *tmp;
-
-			node = rb_prev(&ref->rb_node);
-			while (node) {
-				tmp = rb_entry(node,
-					       struct btrfs_delayed_ref_node,
-					       rb_node);
-				if (tmp->bytenr < start)
-					break;
-				ref = tmp;
-				node = rb_prev(&ref->rb_node);
-			}
 			node = &ref->rb_node;
 		} else
 			node = rb_first(&delayed_refs->root);
@@ -390,7 +420,8 @@
  * this does all the dirty work in terms of maintaining the correct
  * overall modification count.
  */
-static noinline int add_delayed_ref_head(struct btrfs_trans_handle *trans,
+static noinline int add_delayed_ref_head(struct btrfs_fs_info *fs_info,
+					struct btrfs_trans_handle *trans,
 					struct btrfs_delayed_ref_node *ref,
 					u64 bytenr, u64 num_bytes,
 					int action, int is_data)
@@ -437,6 +468,7 @@
 	ref->action  = 0;
 	ref->is_head = 1;
 	ref->in_tree = 1;
+	ref->seq = 0;
 
 	head_ref = btrfs_delayed_node_to_head(ref);
 	head_ref->must_insert_reserved = must_insert_reserved;
@@ -468,14 +500,17 @@
 /*
  * helper to insert a delayed tree ref into the rbtree.
  */
-static noinline int add_delayed_tree_ref(struct btrfs_trans_handle *trans,
+static noinline int add_delayed_tree_ref(struct btrfs_fs_info *fs_info,
+					 struct btrfs_trans_handle *trans,
 					 struct btrfs_delayed_ref_node *ref,
 					 u64 bytenr, u64 num_bytes, u64 parent,
-					 u64 ref_root, int level, int action)
+					 u64 ref_root, int level, int action,
+					 int for_cow)
 {
 	struct btrfs_delayed_ref_node *existing;
 	struct btrfs_delayed_tree_ref *full_ref;
 	struct btrfs_delayed_ref_root *delayed_refs;
+	u64 seq = 0;
 
 	if (action == BTRFS_ADD_DELAYED_EXTENT)
 		action = BTRFS_ADD_DELAYED_REF;
@@ -491,14 +526,17 @@
 	ref->is_head = 0;
 	ref->in_tree = 1;
 
+	if (need_ref_seq(for_cow, ref_root))
+		seq = inc_delayed_seq(delayed_refs);
+	ref->seq = seq;
+
 	full_ref = btrfs_delayed_node_to_tree_ref(ref);
-	if (parent) {
-		full_ref->parent = parent;
+	full_ref->parent = parent;
+	full_ref->root = ref_root;
+	if (parent)
 		ref->type = BTRFS_SHARED_BLOCK_REF_KEY;
-	} else {
-		full_ref->root = ref_root;
+	else
 		ref->type = BTRFS_TREE_BLOCK_REF_KEY;
-	}
 	full_ref->level = level;
 
 	trace_btrfs_delayed_tree_ref(ref, full_ref, action);
@@ -522,15 +560,17 @@
 /*
  * helper to insert a delayed data ref into the rbtree.
  */
-static noinline int add_delayed_data_ref(struct btrfs_trans_handle *trans,
+static noinline int add_delayed_data_ref(struct btrfs_fs_info *fs_info,
+					 struct btrfs_trans_handle *trans,
 					 struct btrfs_delayed_ref_node *ref,
 					 u64 bytenr, u64 num_bytes, u64 parent,
 					 u64 ref_root, u64 owner, u64 offset,
-					 int action)
+					 int action, int for_cow)
 {
 	struct btrfs_delayed_ref_node *existing;
 	struct btrfs_delayed_data_ref *full_ref;
 	struct btrfs_delayed_ref_root *delayed_refs;
+	u64 seq = 0;
 
 	if (action == BTRFS_ADD_DELAYED_EXTENT)
 		action = BTRFS_ADD_DELAYED_REF;
@@ -546,14 +586,18 @@
 	ref->is_head = 0;
 	ref->in_tree = 1;
 
+	if (need_ref_seq(for_cow, ref_root))
+		seq = inc_delayed_seq(delayed_refs);
+	ref->seq = seq;
+
 	full_ref = btrfs_delayed_node_to_data_ref(ref);
-	if (parent) {
-		full_ref->parent = parent;
+	full_ref->parent = parent;
+	full_ref->root = ref_root;
+	if (parent)
 		ref->type = BTRFS_SHARED_DATA_REF_KEY;
-	} else {
-		full_ref->root = ref_root;
+	else
 		ref->type = BTRFS_EXTENT_DATA_REF_KEY;
-	}
+
 	full_ref->objectid = owner;
 	full_ref->offset = offset;
 
@@ -580,10 +624,12 @@
  * to make sure the delayed ref is eventually processed before this
  * transaction commits.
  */
-int btrfs_add_delayed_tree_ref(struct btrfs_trans_handle *trans,
+int btrfs_add_delayed_tree_ref(struct btrfs_fs_info *fs_info,
+			       struct btrfs_trans_handle *trans,
 			       u64 bytenr, u64 num_bytes, u64 parent,
 			       u64 ref_root,  int level, int action,
-			       struct btrfs_delayed_extent_op *extent_op)
+			       struct btrfs_delayed_extent_op *extent_op,
+			       int for_cow)
 {
 	struct btrfs_delayed_tree_ref *ref;
 	struct btrfs_delayed_ref_head *head_ref;
@@ -610,13 +656,17 @@
 	 * insert both the head node and the new ref without dropping
 	 * the spin lock
 	 */
-	ret = add_delayed_ref_head(trans, &head_ref->node, bytenr, num_bytes,
-				   action, 0);
+	ret = add_delayed_ref_head(fs_info, trans, &head_ref->node, bytenr,
+				   num_bytes, action, 0);
 	BUG_ON(ret);
 
-	ret = add_delayed_tree_ref(trans, &ref->node, bytenr, num_bytes,
-				   parent, ref_root, level, action);
+	ret = add_delayed_tree_ref(fs_info, trans, &ref->node, bytenr,
+				   num_bytes, parent, ref_root, level, action,
+				   for_cow);
 	BUG_ON(ret);
+	if (!need_ref_seq(for_cow, ref_root) &&
+	    waitqueue_active(&delayed_refs->seq_wait))
+		wake_up(&delayed_refs->seq_wait);
 	spin_unlock(&delayed_refs->lock);
 	return 0;
 }
@@ -624,11 +674,13 @@
 /*
  * add a delayed data ref. it's similar to btrfs_add_delayed_tree_ref.
  */
-int btrfs_add_delayed_data_ref(struct btrfs_trans_handle *trans,
+int btrfs_add_delayed_data_ref(struct btrfs_fs_info *fs_info,
+			       struct btrfs_trans_handle *trans,
 			       u64 bytenr, u64 num_bytes,
 			       u64 parent, u64 ref_root,
 			       u64 owner, u64 offset, int action,
-			       struct btrfs_delayed_extent_op *extent_op)
+			       struct btrfs_delayed_extent_op *extent_op,
+			       int for_cow)
 {
 	struct btrfs_delayed_data_ref *ref;
 	struct btrfs_delayed_ref_head *head_ref;
@@ -655,18 +707,23 @@
 	 * insert both the head node and the new ref without dropping
 	 * the spin lock
 	 */
-	ret = add_delayed_ref_head(trans, &head_ref->node, bytenr, num_bytes,
-				   action, 1);
+	ret = add_delayed_ref_head(fs_info, trans, &head_ref->node, bytenr,
+				   num_bytes, action, 1);
 	BUG_ON(ret);
 
-	ret = add_delayed_data_ref(trans, &ref->node, bytenr, num_bytes,
-				   parent, ref_root, owner, offset, action);
+	ret = add_delayed_data_ref(fs_info, trans, &ref->node, bytenr,
+				   num_bytes, parent, ref_root, owner, offset,
+				   action, for_cow);
 	BUG_ON(ret);
+	if (!need_ref_seq(for_cow, ref_root) &&
+	    waitqueue_active(&delayed_refs->seq_wait))
+		wake_up(&delayed_refs->seq_wait);
 	spin_unlock(&delayed_refs->lock);
 	return 0;
 }
 
-int btrfs_add_delayed_extent_op(struct btrfs_trans_handle *trans,
+int btrfs_add_delayed_extent_op(struct btrfs_fs_info *fs_info,
+				struct btrfs_trans_handle *trans,
 				u64 bytenr, u64 num_bytes,
 				struct btrfs_delayed_extent_op *extent_op)
 {
@@ -683,11 +740,13 @@
 	delayed_refs = &trans->transaction->delayed_refs;
 	spin_lock(&delayed_refs->lock);
 
-	ret = add_delayed_ref_head(trans, &head_ref->node, bytenr,
+	ret = add_delayed_ref_head(fs_info, trans, &head_ref->node, bytenr,
 				   num_bytes, BTRFS_UPDATE_DELAYED_HEAD,
 				   extent_op->is_data);
 	BUG_ON(ret);
 
+	if (waitqueue_active(&delayed_refs->seq_wait))
+		wake_up(&delayed_refs->seq_wait);
 	spin_unlock(&delayed_refs->lock);
 	return 0;
 }
@@ -704,7 +763,7 @@
 	struct btrfs_delayed_ref_root *delayed_refs;
 
 	delayed_refs = &trans->transaction->delayed_refs;
-	ref = find_ref_head(&delayed_refs->root, bytenr, NULL);
+	ref = find_ref_head(&delayed_refs->root, bytenr, NULL, 0);
 	if (ref)
 		return btrfs_delayed_node_to_head(ref);
 	return NULL;
diff --git a/fs/btrfs/delayed-ref.h b/fs/btrfs/delayed-ref.h
index e287e3b..d8f244d 100644
--- a/fs/btrfs/delayed-ref.h
+++ b/fs/btrfs/delayed-ref.h
@@ -33,6 +33,9 @@
 	/* the size of the extent */
 	u64 num_bytes;
 
+	/* seq number to keep track of insertion order */
+	u64 seq;
+
 	/* ref count on this data structure */
 	atomic_t refs;
 
@@ -98,19 +101,15 @@
 
 struct btrfs_delayed_tree_ref {
 	struct btrfs_delayed_ref_node node;
-	union {
-		u64 root;
-		u64 parent;
-	};
+	u64 root;
+	u64 parent;
 	int level;
 };
 
 struct btrfs_delayed_data_ref {
 	struct btrfs_delayed_ref_node node;
-	union {
-		u64 root;
-		u64 parent;
-	};
+	u64 root;
+	u64 parent;
 	u64 objectid;
 	u64 offset;
 };
@@ -140,6 +139,26 @@
 	int flushing;
 
 	u64 run_delayed_start;
+
+	/*
+	 * seq number of delayed refs. We need to know if a backref was being
+	 * added before the currently processed ref or afterwards.
+	 */
+	u64 seq;
+
+	/*
+	 * seq_list holds a list of all seq numbers that are currently being
+	 * added to the list. While walking backrefs (btrfs_find_all_roots,
+	 * qgroups), which might take some time, no newer ref must be processed,
+	 * as it might influence the outcome of the walk.
+	 */
+	struct list_head seq_head;
+
+	/*
+	 * when the only refs we have in the list must not be processed, we want
+	 * to wait for more refs to show up or for the end of backref walking.
+	 */
+	wait_queue_head_t seq_wait;
 };
 
 static inline void btrfs_put_delayed_ref(struct btrfs_delayed_ref_node *ref)
@@ -151,16 +170,21 @@
 	}
 }
 
-int btrfs_add_delayed_tree_ref(struct btrfs_trans_handle *trans,
+int btrfs_add_delayed_tree_ref(struct btrfs_fs_info *fs_info,
+			       struct btrfs_trans_handle *trans,
 			       u64 bytenr, u64 num_bytes, u64 parent,
 			       u64 ref_root, int level, int action,
-			       struct btrfs_delayed_extent_op *extent_op);
-int btrfs_add_delayed_data_ref(struct btrfs_trans_handle *trans,
+			       struct btrfs_delayed_extent_op *extent_op,
+			       int for_cow);
+int btrfs_add_delayed_data_ref(struct btrfs_fs_info *fs_info,
+			       struct btrfs_trans_handle *trans,
 			       u64 bytenr, u64 num_bytes,
 			       u64 parent, u64 ref_root,
 			       u64 owner, u64 offset, int action,
-			       struct btrfs_delayed_extent_op *extent_op);
-int btrfs_add_delayed_extent_op(struct btrfs_trans_handle *trans,
+			       struct btrfs_delayed_extent_op *extent_op,
+			       int for_cow);
+int btrfs_add_delayed_extent_op(struct btrfs_fs_info *fs_info,
+				struct btrfs_trans_handle *trans,
 				u64 bytenr, u64 num_bytes,
 				struct btrfs_delayed_extent_op *extent_op);
 
@@ -170,6 +194,60 @@
 			   struct btrfs_delayed_ref_head *head);
 int btrfs_find_ref_cluster(struct btrfs_trans_handle *trans,
 			   struct list_head *cluster, u64 search_start);
+
+struct seq_list {
+	struct list_head list;
+	u64 seq;
+};
+
+static inline u64 inc_delayed_seq(struct btrfs_delayed_ref_root *delayed_refs)
+{
+	assert_spin_locked(&delayed_refs->lock);
+	++delayed_refs->seq;
+	return delayed_refs->seq;
+}
+
+static inline void
+btrfs_get_delayed_seq(struct btrfs_delayed_ref_root *delayed_refs,
+		      struct seq_list *elem)
+{
+	assert_spin_locked(&delayed_refs->lock);
+	elem->seq = delayed_refs->seq;
+	list_add_tail(&elem->list, &delayed_refs->seq_head);
+}
+
+static inline void
+btrfs_put_delayed_seq(struct btrfs_delayed_ref_root *delayed_refs,
+		      struct seq_list *elem)
+{
+	spin_lock(&delayed_refs->lock);
+	list_del(&elem->list);
+	wake_up(&delayed_refs->seq_wait);
+	spin_unlock(&delayed_refs->lock);
+}
+
+int btrfs_check_delayed_seq(struct btrfs_delayed_ref_root *delayed_refs,
+			    u64 seq);
+
+/*
+ * delayed refs with a ref_seq > 0 must be held back during backref walking.
+ * this only applies to items in one of the fs-trees. for_cow items never need
+ * to be held back, so they won't get a ref_seq number.
+ */
+static inline int need_ref_seq(int for_cow, u64 rootid)
+{
+	if (for_cow)
+		return 0;
+
+	if (rootid == BTRFS_FS_TREE_OBJECTID)
+		return 1;
+
+	if ((s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID)
+		return 1;
+
+	return 0;
+}
+
 /*
  * a node might live in a head or a regular ref, this lets you
  * test for the proper type to use.
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index d852566..7aa9cd3 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -43,6 +43,7 @@
 #include "tree-log.h"
 #include "free-space-cache.h"
 #include "inode-map.h"
+#include "check-integrity.h"
 
 static struct extent_io_ops btree_extent_io_ops;
 static void end_workqueue_fn(struct btrfs_work *work);
@@ -1143,7 +1144,6 @@
 	root->orphan_item_inserted = 0;
 	root->orphan_cleanup_state = 0;
 
-	root->fs_info = fs_info;
 	root->objectid = objectid;
 	root->last_trans = 0;
 	root->highest_objectid = 0;
@@ -1217,6 +1217,14 @@
 	return 0;
 }
 
+static struct btrfs_root *btrfs_alloc_root(struct btrfs_fs_info *fs_info)
+{
+	struct btrfs_root *root = kzalloc(sizeof(*root), GFP_NOFS);
+	if (root)
+		root->fs_info = fs_info;
+	return root;
+}
+
 static struct btrfs_root *alloc_log_tree(struct btrfs_trans_handle *trans,
 					 struct btrfs_fs_info *fs_info)
 {
@@ -1224,7 +1232,7 @@
 	struct btrfs_root *tree_root = fs_info->tree_root;
 	struct extent_buffer *leaf;
 
-	root = kzalloc(sizeof(*root), GFP_NOFS);
+	root = btrfs_alloc_root(fs_info);
 	if (!root)
 		return ERR_PTR(-ENOMEM);
 
@@ -1244,7 +1252,8 @@
 	root->ref_cows = 0;
 
 	leaf = btrfs_alloc_free_block(trans, root, root->leafsize, 0,
-				      BTRFS_TREE_LOG_OBJECTID, NULL, 0, 0, 0);
+				      BTRFS_TREE_LOG_OBJECTID, NULL,
+				      0, 0, 0, 0);
 	if (IS_ERR(leaf)) {
 		kfree(root);
 		return ERR_CAST(leaf);
@@ -1318,7 +1327,7 @@
 	u32 blocksize;
 	int ret = 0;
 
-	root = kzalloc(sizeof(*root), GFP_NOFS);
+	root = btrfs_alloc_root(fs_info);
 	if (!root)
 		return ERR_PTR(-ENOMEM);
 	if (location->offset == (u64)-1) {
@@ -1874,9 +1883,9 @@
 }
 
 
-struct btrfs_root *open_ctree(struct super_block *sb,
-			      struct btrfs_fs_devices *fs_devices,
-			      char *options)
+int open_ctree(struct super_block *sb,
+	       struct btrfs_fs_devices *fs_devices,
+	       char *options)
 {
 	u32 sectorsize;
 	u32 nodesize;
@@ -1888,8 +1897,8 @@
 	struct btrfs_key location;
 	struct buffer_head *bh;
 	struct btrfs_super_block *disk_super;
-	struct btrfs_root *tree_root = btrfs_sb(sb);
-	struct btrfs_fs_info *fs_info = tree_root->fs_info;
+	struct btrfs_fs_info *fs_info = btrfs_sb(sb);
+	struct btrfs_root *tree_root;
 	struct btrfs_root *extent_root;
 	struct btrfs_root *csum_root;
 	struct btrfs_root *chunk_root;
@@ -1900,16 +1909,14 @@
 	int num_backups_tried = 0;
 	int backup_index = 0;
 
-	extent_root = fs_info->extent_root =
-		kzalloc(sizeof(struct btrfs_root), GFP_NOFS);
-	csum_root = fs_info->csum_root =
-		kzalloc(sizeof(struct btrfs_root), GFP_NOFS);
-	chunk_root = fs_info->chunk_root =
-		kzalloc(sizeof(struct btrfs_root), GFP_NOFS);
-	dev_root = fs_info->dev_root =
-		kzalloc(sizeof(struct btrfs_root), GFP_NOFS);
+	tree_root = fs_info->tree_root = btrfs_alloc_root(fs_info);
+	extent_root = fs_info->extent_root = btrfs_alloc_root(fs_info);
+	csum_root = fs_info->csum_root = btrfs_alloc_root(fs_info);
+	chunk_root = fs_info->chunk_root = btrfs_alloc_root(fs_info);
+	dev_root = fs_info->dev_root = btrfs_alloc_root(fs_info);
 
-	if (!extent_root || !csum_root || !chunk_root || !dev_root) {
+	if (!tree_root || !extent_root || !csum_root ||
+	    !chunk_root || !dev_root) {
 		err = -ENOMEM;
 		goto fail;
 	}
@@ -1998,6 +2005,17 @@
 	init_waitqueue_head(&fs_info->scrub_pause_wait);
 	init_rwsem(&fs_info->scrub_super_lock);
 	fs_info->scrub_workers_refcnt = 0;
+#ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY
+	fs_info->check_integrity_print_mask = 0;
+#endif
+
+	spin_lock_init(&fs_info->balance_lock);
+	mutex_init(&fs_info->balance_mutex);
+	atomic_set(&fs_info->balance_running, 0);
+	atomic_set(&fs_info->balance_pause_req, 0);
+	atomic_set(&fs_info->balance_cancel_req, 0);
+	fs_info->balance_ctl = NULL;
+	init_waitqueue_head(&fs_info->balance_wait_q);
 
 	sb->s_blocksize = 4096;
 	sb->s_blocksize_bits = blksize_bits(4096);
@@ -2267,9 +2285,7 @@
 	   (unsigned long)btrfs_header_chunk_tree_uuid(chunk_root->node),
 	   BTRFS_UUID_SIZE);
 
-	mutex_lock(&fs_info->chunk_mutex);
 	ret = btrfs_read_chunk_tree(chunk_root);
-	mutex_unlock(&fs_info->chunk_mutex);
 	if (ret) {
 		printk(KERN_WARNING "btrfs: failed to read chunk tree on %s\n",
 		       sb->s_id);
@@ -2318,9 +2334,6 @@
 
 	fs_info->generation = generation;
 	fs_info->last_trans_committed = generation;
-	fs_info->data_alloc_profile = (u64)-1;
-	fs_info->metadata_alloc_profile = (u64)-1;
-	fs_info->system_alloc_profile = fs_info->metadata_alloc_profile;
 
 	ret = btrfs_init_space_info(fs_info);
 	if (ret) {
@@ -2353,6 +2366,19 @@
 		btrfs_set_opt(fs_info->mount_opt, SSD);
 	}
 
+#ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY
+	if (btrfs_test_opt(tree_root, CHECK_INTEGRITY)) {
+		ret = btrfsic_mount(tree_root, fs_devices,
+				    btrfs_test_opt(tree_root,
+					CHECK_INTEGRITY_INCLUDING_EXTENT_DATA) ?
+				    1 : 0,
+				    fs_info->check_integrity_print_mask);
+		if (ret)
+			printk(KERN_WARNING "btrfs: failed to initialize"
+			       " integrity check module %s\n", sb->s_id);
+	}
+#endif
+
 	/* do not make disk changes in broken FS */
 	if (btrfs_super_log_root(disk_super) != 0 &&
 	    !(fs_info->fs_state & BTRFS_SUPER_FLAG_ERROR)) {
@@ -2368,7 +2394,7 @@
 		     btrfs_level_size(tree_root,
 				      btrfs_super_log_root_level(disk_super));
 
-		log_tree_root = kzalloc(sizeof(struct btrfs_root), GFP_NOFS);
+		log_tree_root = btrfs_alloc_root(fs_info);
 		if (!log_tree_root) {
 			err = -ENOMEM;
 			goto fail_trans_kthread;
@@ -2423,13 +2449,17 @@
 		if (!err)
 			err = btrfs_orphan_cleanup(fs_info->tree_root);
 		up_read(&fs_info->cleanup_work_sem);
+
+		if (!err)
+			err = btrfs_recover_balance(fs_info->tree_root);
+
 		if (err) {
 			close_ctree(tree_root);
-			return ERR_PTR(err);
+			return err;
 		}
 	}
 
-	return tree_root;
+	return 0;
 
 fail_trans_kthread:
 	kthread_stop(fs_info->transaction_kthread);
@@ -2475,8 +2505,7 @@
 	cleanup_srcu_struct(&fs_info->subvol_srcu);
 fail:
 	btrfs_close_devices(fs_info->fs_devices);
-	free_fs_info(fs_info);
-	return ERR_PTR(err);
+	return err;
 
 recovery_tree_root:
 	if (!btrfs_test_opt(tree_root, RECOVERY))
@@ -2631,7 +2660,7 @@
 		 * we fua the first super.  The others we allow
 		 * to go down lazy.
 		 */
-		ret = submit_bh(WRITE_FUA, bh);
+		ret = btrfsic_submit_bh(WRITE_FUA, bh);
 		if (ret)
 			errors++;
 	}
@@ -2708,7 +2737,7 @@
 	device->flush_bio = bio;
 
 	bio_get(bio);
-	submit_bio(WRITE_FLUSH, bio);
+	btrfsic_submit_bio(WRITE_FLUSH, bio);
 
 	return 0;
 }
@@ -2972,6 +3001,9 @@
 	fs_info->closing = 1;
 	smp_mb();
 
+	/* pause restriper - we want to resume on mount */
+	btrfs_pause_balance(root->fs_info);
+
 	btrfs_scrub_cancel(root);
 
 	/* wait for any defraggers to finish */
@@ -2979,7 +3011,7 @@
 		   (atomic_read(&fs_info->defrag_running) == 0));
 
 	/* clear out the rbtree of defraggable inodes */
-	btrfs_run_defrag_inodes(root->fs_info);
+	btrfs_run_defrag_inodes(fs_info);
 
 	/*
 	 * Here come 2 situations when btrfs is broken to flip readonly:
@@ -3008,8 +3040,8 @@
 
 	btrfs_put_block_group_cache(fs_info);
 
-	kthread_stop(root->fs_info->transaction_kthread);
-	kthread_stop(root->fs_info->cleaner_kthread);
+	kthread_stop(fs_info->transaction_kthread);
+	kthread_stop(fs_info->cleaner_kthread);
 
 	fs_info->closing = 2;
 	smp_mb();
@@ -3027,14 +3059,14 @@
 	free_extent_buffer(fs_info->extent_root->commit_root);
 	free_extent_buffer(fs_info->tree_root->node);
 	free_extent_buffer(fs_info->tree_root->commit_root);
-	free_extent_buffer(root->fs_info->chunk_root->node);
-	free_extent_buffer(root->fs_info->chunk_root->commit_root);
-	free_extent_buffer(root->fs_info->dev_root->node);
-	free_extent_buffer(root->fs_info->dev_root->commit_root);
-	free_extent_buffer(root->fs_info->csum_root->node);
-	free_extent_buffer(root->fs_info->csum_root->commit_root);
+	free_extent_buffer(fs_info->chunk_root->node);
+	free_extent_buffer(fs_info->chunk_root->commit_root);
+	free_extent_buffer(fs_info->dev_root->node);
+	free_extent_buffer(fs_info->dev_root->commit_root);
+	free_extent_buffer(fs_info->csum_root->node);
+	free_extent_buffer(fs_info->csum_root->commit_root);
 
-	btrfs_free_block_groups(root->fs_info);
+	btrfs_free_block_groups(fs_info);
 
 	del_fs_roots(fs_info);
 
@@ -3054,14 +3086,17 @@
 	btrfs_stop_workers(&fs_info->caching_workers);
 	btrfs_stop_workers(&fs_info->readahead_workers);
 
+#ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY
+	if (btrfs_test_opt(root, CHECK_INTEGRITY))
+		btrfsic_unmount(root, fs_info->fs_devices);
+#endif
+
 	btrfs_close_devices(fs_info->fs_devices);
 	btrfs_mapping_tree_free(&fs_info->mapping_tree);
 
 	bdi_destroy(&fs_info->bdi);
 	cleanup_srcu_struct(&fs_info->subvol_srcu);
 
-	free_fs_info(fs_info);
-
 	return 0;
 }
 
diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h
index c99d0a8f..e4bc474 100644
--- a/fs/btrfs/disk-io.h
+++ b/fs/btrfs/disk-io.h
@@ -46,9 +46,9 @@
 						   u64 bytenr, u32 blocksize);
 int clean_tree_block(struct btrfs_trans_handle *trans,
 		     struct btrfs_root *root, struct extent_buffer *buf);
-struct btrfs_root *open_ctree(struct super_block *sb,
-			      struct btrfs_fs_devices *fs_devices,
-			      char *options);
+int open_ctree(struct super_block *sb,
+	       struct btrfs_fs_devices *fs_devices,
+	       char *options);
 int close_ctree(struct btrfs_root *root);
 int write_ctree_super(struct btrfs_trans_handle *trans,
 		      struct btrfs_root *root, int max_mirrors);
diff --git a/fs/btrfs/export.c b/fs/btrfs/export.c
index 1b8dc33..5f77166 100644
--- a/fs/btrfs/export.c
+++ b/fs/btrfs/export.c
@@ -67,7 +67,7 @@
 				       u64 root_objectid, u32 generation,
 				       int check_generation)
 {
-	struct btrfs_fs_info *fs_info = btrfs_sb(sb)->fs_info;
+	struct btrfs_fs_info *fs_info = btrfs_sb(sb);
 	struct btrfs_root *root;
 	struct inode *inode;
 	struct btrfs_key key;
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index f5fbe57..700879e 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -618,8 +618,7 @@
 	struct list_head *head = &info->space_info;
 	struct btrfs_space_info *found;
 
-	flags &= BTRFS_BLOCK_GROUP_DATA | BTRFS_BLOCK_GROUP_SYSTEM |
-		 BTRFS_BLOCK_GROUP_METADATA;
+	flags &= BTRFS_BLOCK_GROUP_TYPE_MASK;
 
 	rcu_read_lock();
 	list_for_each_entry_rcu(found, head, list) {
@@ -1872,20 +1871,24 @@
 int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
 			 struct btrfs_root *root,
 			 u64 bytenr, u64 num_bytes, u64 parent,
-			 u64 root_objectid, u64 owner, u64 offset)
+			 u64 root_objectid, u64 owner, u64 offset, int for_cow)
 {
 	int ret;
+	struct btrfs_fs_info *fs_info = root->fs_info;
+
 	BUG_ON(owner < BTRFS_FIRST_FREE_OBJECTID &&
 	       root_objectid == BTRFS_TREE_LOG_OBJECTID);
 
 	if (owner < BTRFS_FIRST_FREE_OBJECTID) {
-		ret = btrfs_add_delayed_tree_ref(trans, bytenr, num_bytes,
+		ret = btrfs_add_delayed_tree_ref(fs_info, trans, bytenr,
+					num_bytes,
 					parent, root_objectid, (int)owner,
-					BTRFS_ADD_DELAYED_REF, NULL);
+					BTRFS_ADD_DELAYED_REF, NULL, for_cow);
 	} else {
-		ret = btrfs_add_delayed_data_ref(trans, bytenr, num_bytes,
+		ret = btrfs_add_delayed_data_ref(fs_info, trans, bytenr,
+					num_bytes,
 					parent, root_objectid, owner, offset,
-					BTRFS_ADD_DELAYED_REF, NULL);
+					BTRFS_ADD_DELAYED_REF, NULL, for_cow);
 	}
 	return ret;
 }
@@ -2233,6 +2236,28 @@
 		}
 
 		/*
+		 * locked_ref is the head node, so we have to go one
+		 * node back for any delayed ref updates
+		 */
+		ref = select_delayed_ref(locked_ref);
+
+		if (ref && ref->seq &&
+		    btrfs_check_delayed_seq(delayed_refs, ref->seq)) {
+			/*
+			 * there are still refs with lower seq numbers in the
+			 * process of being added. Don't run this ref yet.
+			 */
+			list_del_init(&locked_ref->cluster);
+			mutex_unlock(&locked_ref->mutex);
+			locked_ref = NULL;
+			delayed_refs->num_heads_ready++;
+			spin_unlock(&delayed_refs->lock);
+			cond_resched();
+			spin_lock(&delayed_refs->lock);
+			continue;
+		}
+
+		/*
 		 * record the must insert reserved flag before we
 		 * drop the spin lock.
 		 */
@@ -2242,11 +2267,6 @@
 		extent_op = locked_ref->extent_op;
 		locked_ref->extent_op = NULL;
 
-		/*
-		 * locked_ref is the head node, so we have to go one
-		 * node back for any delayed ref updates
-		 */
-		ref = select_delayed_ref(locked_ref);
 		if (!ref) {
 			/* All delayed refs have been processed, Go ahead
 			 * and send the head node to run_one_delayed_ref,
@@ -2267,9 +2287,7 @@
 				BUG_ON(ret);
 				kfree(extent_op);
 
-				cond_resched();
-				spin_lock(&delayed_refs->lock);
-				continue;
+				goto next;
 			}
 
 			list_del_init(&locked_ref->cluster);
@@ -2279,7 +2297,12 @@
 		ref->in_tree = 0;
 		rb_erase(&ref->rb_node, &delayed_refs->root);
 		delayed_refs->num_entries--;
-
+		/*
+		 * we modified num_entries, but as we're currently running
+		 * delayed refs, skip
+		 *     wake_up(&delayed_refs->seq_wait);
+		 * here.
+		 */
 		spin_unlock(&delayed_refs->lock);
 
 		ret = run_one_delayed_ref(trans, root, ref, extent_op,
@@ -2289,13 +2312,34 @@
 		btrfs_put_delayed_ref(ref);
 		kfree(extent_op);
 		count++;
-
+next:
+		do_chunk_alloc(trans, root->fs_info->extent_root,
+			       2 * 1024 * 1024,
+			       btrfs_get_alloc_profile(root, 0),
+			       CHUNK_ALLOC_NO_FORCE);
 		cond_resched();
 		spin_lock(&delayed_refs->lock);
 	}
 	return count;
 }
 
+
+static void wait_for_more_refs(struct btrfs_delayed_ref_root *delayed_refs,
+			unsigned long num_refs)
+{
+	struct list_head *first_seq = delayed_refs->seq_head.next;
+
+	spin_unlock(&delayed_refs->lock);
+	pr_debug("waiting for more refs (num %ld, first %p)\n",
+		 num_refs, first_seq);
+	wait_event(delayed_refs->seq_wait,
+		   num_refs != delayed_refs->num_entries ||
+		   delayed_refs->seq_head.next != first_seq);
+	pr_debug("done waiting for more refs (num %ld, first %p)\n",
+		 delayed_refs->num_entries, delayed_refs->seq_head.next);
+	spin_lock(&delayed_refs->lock);
+}
+
 /*
  * this starts processing the delayed reference count updates and
  * extent insertions we have queued up so far.  count can be
@@ -2311,15 +2355,23 @@
 	struct btrfs_delayed_ref_node *ref;
 	struct list_head cluster;
 	int ret;
+	u64 delayed_start;
 	int run_all = count == (unsigned long)-1;
 	int run_most = 0;
+	unsigned long num_refs = 0;
+	int consider_waiting;
 
 	if (root == root->fs_info->extent_root)
 		root = root->fs_info->tree_root;
 
+	do_chunk_alloc(trans, root->fs_info->extent_root,
+		       2 * 1024 * 1024, btrfs_get_alloc_profile(root, 0),
+		       CHUNK_ALLOC_NO_FORCE);
+
 	delayed_refs = &trans->transaction->delayed_refs;
 	INIT_LIST_HEAD(&cluster);
 again:
+	consider_waiting = 0;
 	spin_lock(&delayed_refs->lock);
 	if (count == 0) {
 		count = delayed_refs->num_entries * 2;
@@ -2336,11 +2388,35 @@
 		 * of refs to process starting at the first one we are able to
 		 * lock
 		 */
+		delayed_start = delayed_refs->run_delayed_start;
 		ret = btrfs_find_ref_cluster(trans, &cluster,
 					     delayed_refs->run_delayed_start);
 		if (ret)
 			break;
 
+		if (delayed_start >= delayed_refs->run_delayed_start) {
+			if (consider_waiting == 0) {
+				/*
+				 * btrfs_find_ref_cluster looped. let's do one
+				 * more cycle. if we don't run any delayed ref
+				 * during that cycle (because we can't because
+				 * all of them are blocked) and if the number of
+				 * refs doesn't change, we avoid busy waiting.
+				 */
+				consider_waiting = 1;
+				num_refs = delayed_refs->num_entries;
+			} else {
+				wait_for_more_refs(delayed_refs, num_refs);
+				/*
+				 * after waiting, things have changed. we
+				 * dropped the lock and someone else might have
+				 * run some refs, built new clusters and so on.
+				 * therefore, we restart staleness detection.
+				 */
+				consider_waiting = 0;
+			}
+		}
+
 		ret = run_clustered_refs(trans, root, &cluster);
 		BUG_ON(ret < 0);
 
@@ -2348,6 +2424,11 @@
 
 		if (count == 0)
 			break;
+
+		if (ret || delayed_refs->run_delayed_start == 0) {
+			/* refs were run, let's reset staleness detection */
+			consider_waiting = 0;
+		}
 	}
 
 	if (run_all) {
@@ -2405,7 +2486,8 @@
 	extent_op->update_key = 0;
 	extent_op->is_data = is_data ? 1 : 0;
 
-	ret = btrfs_add_delayed_extent_op(trans, bytenr, num_bytes, extent_op);
+	ret = btrfs_add_delayed_extent_op(root->fs_info, trans, bytenr,
+					  num_bytes, extent_op);
 	if (ret)
 		kfree(extent_op);
 	return ret;
@@ -2590,7 +2672,7 @@
 static int __btrfs_mod_ref(struct btrfs_trans_handle *trans,
 			   struct btrfs_root *root,
 			   struct extent_buffer *buf,
-			   int full_backref, int inc)
+			   int full_backref, int inc, int for_cow)
 {
 	u64 bytenr;
 	u64 num_bytes;
@@ -2603,7 +2685,7 @@
 	int level;
 	int ret = 0;
 	int (*process_func)(struct btrfs_trans_handle *, struct btrfs_root *,
-			    u64, u64, u64, u64, u64, u64);
+			    u64, u64, u64, u64, u64, u64, int);
 
 	ref_root = btrfs_header_owner(buf);
 	nritems = btrfs_header_nritems(buf);
@@ -2640,14 +2722,15 @@
 			key.offset -= btrfs_file_extent_offset(buf, fi);
 			ret = process_func(trans, root, bytenr, num_bytes,
 					   parent, ref_root, key.objectid,
-					   key.offset);
+					   key.offset, for_cow);
 			if (ret)
 				goto fail;
 		} else {
 			bytenr = btrfs_node_blockptr(buf, i);
 			num_bytes = btrfs_level_size(root, level - 1);
 			ret = process_func(trans, root, bytenr, num_bytes,
-					   parent, ref_root, level - 1, 0);
+					   parent, ref_root, level - 1, 0,
+					   for_cow);
 			if (ret)
 				goto fail;
 		}
@@ -2659,15 +2742,15 @@
 }
 
 int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
-		  struct extent_buffer *buf, int full_backref)
+		  struct extent_buffer *buf, int full_backref, int for_cow)
 {
-	return __btrfs_mod_ref(trans, root, buf, full_backref, 1);
+	return __btrfs_mod_ref(trans, root, buf, full_backref, 1, for_cow);
 }
 
 int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
-		  struct extent_buffer *buf, int full_backref)
+		  struct extent_buffer *buf, int full_backref, int for_cow)
 {
-	return __btrfs_mod_ref(trans, root, buf, full_backref, 0);
+	return __btrfs_mod_ref(trans, root, buf, full_backref, 0, for_cow);
 }
 
 static int write_one_cache_group(struct btrfs_trans_handle *trans,
@@ -2993,9 +3076,7 @@
 		INIT_LIST_HEAD(&found->block_groups[i]);
 	init_rwsem(&found->groups_sem);
 	spin_lock_init(&found->lock);
-	found->flags = flags & (BTRFS_BLOCK_GROUP_DATA |
-				BTRFS_BLOCK_GROUP_SYSTEM |
-				BTRFS_BLOCK_GROUP_METADATA);
+	found->flags = flags & BTRFS_BLOCK_GROUP_TYPE_MASK;
 	found->total_bytes = total_bytes;
 	found->disk_total = total_bytes * factor;
 	found->bytes_used = bytes_used;
@@ -3016,20 +3097,27 @@
 
 static void set_avail_alloc_bits(struct btrfs_fs_info *fs_info, u64 flags)
 {
-	u64 extra_flags = flags & (BTRFS_BLOCK_GROUP_RAID0 |
-				   BTRFS_BLOCK_GROUP_RAID1 |
-				   BTRFS_BLOCK_GROUP_RAID10 |
-				   BTRFS_BLOCK_GROUP_DUP);
-	if (extra_flags) {
-		if (flags & BTRFS_BLOCK_GROUP_DATA)
-			fs_info->avail_data_alloc_bits |= extra_flags;
-		if (flags & BTRFS_BLOCK_GROUP_METADATA)
-			fs_info->avail_metadata_alloc_bits |= extra_flags;
-		if (flags & BTRFS_BLOCK_GROUP_SYSTEM)
-			fs_info->avail_system_alloc_bits |= extra_flags;
-	}
+	u64 extra_flags = flags & BTRFS_BLOCK_GROUP_PROFILE_MASK;
+
+	/* chunk -> extended profile */
+	if (extra_flags == 0)
+		extra_flags = BTRFS_AVAIL_ALLOC_BIT_SINGLE;
+
+	if (flags & BTRFS_BLOCK_GROUP_DATA)
+		fs_info->avail_data_alloc_bits |= extra_flags;
+	if (flags & BTRFS_BLOCK_GROUP_METADATA)
+		fs_info->avail_metadata_alloc_bits |= extra_flags;
+	if (flags & BTRFS_BLOCK_GROUP_SYSTEM)
+		fs_info->avail_system_alloc_bits |= extra_flags;
 }
 
+/*
+ * @flags: available profiles in extended format (see ctree.h)
+ *
+ * Returns reduced profile in chunk format.  If profile changing is in
+ * progress (either running or paused) picks the target profile (if it's
+ * already available), otherwise falls back to plain reducing.
+ */
 u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags)
 {
 	/*
@@ -3040,6 +3128,34 @@
 	u64 num_devices = root->fs_info->fs_devices->rw_devices +
 		root->fs_info->fs_devices->missing_devices;
 
+	/* pick restriper's target profile if it's available */
+	spin_lock(&root->fs_info->balance_lock);
+	if (root->fs_info->balance_ctl) {
+		struct btrfs_balance_control *bctl = root->fs_info->balance_ctl;
+		u64 tgt = 0;
+
+		if ((flags & BTRFS_BLOCK_GROUP_DATA) &&
+		    (bctl->data.flags & BTRFS_BALANCE_ARGS_CONVERT) &&
+		    (flags & bctl->data.target)) {
+			tgt = BTRFS_BLOCK_GROUP_DATA | bctl->data.target;
+		} else if ((flags & BTRFS_BLOCK_GROUP_SYSTEM) &&
+			   (bctl->sys.flags & BTRFS_BALANCE_ARGS_CONVERT) &&
+			   (flags & bctl->sys.target)) {
+			tgt = BTRFS_BLOCK_GROUP_SYSTEM | bctl->sys.target;
+		} else if ((flags & BTRFS_BLOCK_GROUP_METADATA) &&
+			   (bctl->meta.flags & BTRFS_BALANCE_ARGS_CONVERT) &&
+			   (flags & bctl->meta.target)) {
+			tgt = BTRFS_BLOCK_GROUP_METADATA | bctl->meta.target;
+		}
+
+		if (tgt) {
+			spin_unlock(&root->fs_info->balance_lock);
+			flags = tgt;
+			goto out;
+		}
+	}
+	spin_unlock(&root->fs_info->balance_lock);
+
 	if (num_devices == 1)
 		flags &= ~(BTRFS_BLOCK_GROUP_RAID1 | BTRFS_BLOCK_GROUP_RAID0);
 	if (num_devices < 4)
@@ -3059,22 +3175,25 @@
 	if ((flags & BTRFS_BLOCK_GROUP_RAID0) &&
 	    ((flags & BTRFS_BLOCK_GROUP_RAID1) |
 	     (flags & BTRFS_BLOCK_GROUP_RAID10) |
-	     (flags & BTRFS_BLOCK_GROUP_DUP)))
+	     (flags & BTRFS_BLOCK_GROUP_DUP))) {
 		flags &= ~BTRFS_BLOCK_GROUP_RAID0;
+	}
+
+out:
+	/* extended -> chunk profile */
+	flags &= ~BTRFS_AVAIL_ALLOC_BIT_SINGLE;
 	return flags;
 }
 
 static u64 get_alloc_profile(struct btrfs_root *root, u64 flags)
 {
 	if (flags & BTRFS_BLOCK_GROUP_DATA)
-		flags |= root->fs_info->avail_data_alloc_bits &
-			 root->fs_info->data_alloc_profile;
+		flags |= root->fs_info->avail_data_alloc_bits;
 	else if (flags & BTRFS_BLOCK_GROUP_SYSTEM)
-		flags |= root->fs_info->avail_system_alloc_bits &
-			 root->fs_info->system_alloc_profile;
+		flags |= root->fs_info->avail_system_alloc_bits;
 	else if (flags & BTRFS_BLOCK_GROUP_METADATA)
-		flags |= root->fs_info->avail_metadata_alloc_bits &
-			 root->fs_info->metadata_alloc_profile;
+		flags |= root->fs_info->avail_metadata_alloc_bits;
+
 	return btrfs_reduce_alloc_profile(root, flags);
 }
 
@@ -3191,6 +3310,8 @@
 		return -ENOSPC;
 	}
 	data_sinfo->bytes_may_use += bytes;
+	trace_btrfs_space_reservation(root->fs_info, "space_info",
+				      (u64)data_sinfo, bytes, 1);
 	spin_unlock(&data_sinfo->lock);
 
 	return 0;
@@ -3210,6 +3331,8 @@
 	data_sinfo = BTRFS_I(inode)->space_info;
 	spin_lock(&data_sinfo->lock);
 	data_sinfo->bytes_may_use -= bytes;
+	trace_btrfs_space_reservation(root->fs_info, "space_info",
+				      (u64)data_sinfo, bytes, 0);
 	spin_unlock(&data_sinfo->lock);
 }
 
@@ -3257,27 +3380,15 @@
 		if (num_bytes - num_allocated < thresh)
 			return 1;
 	}
-
-	/*
-	 * we have two similar checks here, one based on percentage
-	 * and once based on a hard number of 256MB.  The idea
-	 * is that if we have a good amount of free
-	 * room, don't allocate a chunk.  A good mount is
-	 * less than 80% utilized of the chunks we have allocated,
-	 * or more than 256MB free
-	 */
-	if (num_allocated + alloc_bytes + 256 * 1024 * 1024 < num_bytes)
-		return 0;
-
-	if (num_allocated + alloc_bytes < div_factor(num_bytes, 8))
-		return 0;
-
 	thresh = btrfs_super_total_bytes(root->fs_info->super_copy);
 
-	/* 256MB or 5% of the FS */
-	thresh = max_t(u64, 256 * 1024 * 1024, div_factor_fine(thresh, 5));
+	/* 256MB or 2% of the FS */
+	thresh = max_t(u64, 256 * 1024 * 1024, div_factor_fine(thresh, 2));
+	/* system chunks need a much small threshold */
+	if (sinfo->flags & BTRFS_BLOCK_GROUP_SYSTEM)
+		thresh = 32 * 1024 * 1024;
 
-	if (num_bytes > thresh && sinfo->bytes_used < div_factor(num_bytes, 3))
+	if (num_bytes > thresh && sinfo->bytes_used < div_factor(num_bytes, 8))
 		return 0;
 	return 1;
 }
@@ -3291,7 +3402,7 @@
 	int wait_for_alloc = 0;
 	int ret = 0;
 
-	flags = btrfs_reduce_alloc_profile(extent_root, flags);
+	BUG_ON(!profile_is_valid(flags, 0));
 
 	space_info = __find_space_info(extent_root->fs_info, flags);
 	if (!space_info) {
@@ -3582,6 +3693,10 @@
 	if (used <= space_info->total_bytes) {
 		if (used + orig_bytes <= space_info->total_bytes) {
 			space_info->bytes_may_use += orig_bytes;
+			trace_btrfs_space_reservation(root->fs_info,
+						      "space_info",
+						      (u64)space_info,
+						      orig_bytes, 1);
 			ret = 0;
 		} else {
 			/*
@@ -3649,6 +3764,10 @@
 
 		if (used + num_bytes < space_info->total_bytes + avail) {
 			space_info->bytes_may_use += orig_bytes;
+			trace_btrfs_space_reservation(root->fs_info,
+						      "space_info",
+						      (u64)space_info,
+						      orig_bytes, 1);
 			ret = 0;
 		} else {
 			wait_ordered = true;
@@ -3755,7 +3874,8 @@
 	spin_unlock(&block_rsv->lock);
 }
 
-static void block_rsv_release_bytes(struct btrfs_block_rsv *block_rsv,
+static void block_rsv_release_bytes(struct btrfs_fs_info *fs_info,
+				    struct btrfs_block_rsv *block_rsv,
 				    struct btrfs_block_rsv *dest, u64 num_bytes)
 {
 	struct btrfs_space_info *space_info = block_rsv->space_info;
@@ -3791,6 +3911,9 @@
 		if (num_bytes) {
 			spin_lock(&space_info->lock);
 			space_info->bytes_may_use -= num_bytes;
+			trace_btrfs_space_reservation(fs_info, "space_info",
+						      (u64)space_info,
+						      num_bytes, 0);
 			space_info->reservation_progress++;
 			spin_unlock(&space_info->lock);
 		}
@@ -3947,7 +4070,8 @@
 	if (global_rsv->full || global_rsv == block_rsv ||
 	    block_rsv->space_info != global_rsv->space_info)
 		global_rsv = NULL;
-	block_rsv_release_bytes(block_rsv, global_rsv, num_bytes);
+	block_rsv_release_bytes(root->fs_info, block_rsv, global_rsv,
+				num_bytes);
 }
 
 /*
@@ -4006,11 +4130,15 @@
 		num_bytes = sinfo->total_bytes - num_bytes;
 		block_rsv->reserved += num_bytes;
 		sinfo->bytes_may_use += num_bytes;
+		trace_btrfs_space_reservation(fs_info, "space_info",
+					      (u64)sinfo, num_bytes, 1);
 	}
 
 	if (block_rsv->reserved >= block_rsv->size) {
 		num_bytes = block_rsv->reserved - block_rsv->size;
 		sinfo->bytes_may_use -= num_bytes;
+		trace_btrfs_space_reservation(fs_info, "space_info",
+					      (u64)sinfo, num_bytes, 0);
 		sinfo->reservation_progress++;
 		block_rsv->reserved = block_rsv->size;
 		block_rsv->full = 1;
@@ -4045,7 +4173,8 @@
 
 static void release_global_block_rsv(struct btrfs_fs_info *fs_info)
 {
-	block_rsv_release_bytes(&fs_info->global_block_rsv, NULL, (u64)-1);
+	block_rsv_release_bytes(fs_info, &fs_info->global_block_rsv, NULL,
+				(u64)-1);
 	WARN_ON(fs_info->delalloc_block_rsv.size > 0);
 	WARN_ON(fs_info->delalloc_block_rsv.reserved > 0);
 	WARN_ON(fs_info->trans_block_rsv.size > 0);
@@ -4062,6 +4191,8 @@
 	if (!trans->bytes_reserved)
 		return;
 
+	trace_btrfs_space_reservation(root->fs_info, "transaction", (u64)trans,
+				      trans->bytes_reserved, 0);
 	btrfs_block_rsv_release(root, trans->block_rsv, trans->bytes_reserved);
 	trans->bytes_reserved = 0;
 }
@@ -4079,6 +4210,8 @@
 	 * when we are truly done with the orphan item.
 	 */
 	u64 num_bytes = btrfs_calc_trans_metadata_size(root, 1);
+	trace_btrfs_space_reservation(root->fs_info, "orphan",
+				      btrfs_ino(inode), num_bytes, 1);
 	return block_rsv_migrate_bytes(src_rsv, dst_rsv, num_bytes);
 }
 
@@ -4086,6 +4219,8 @@
 {
 	struct btrfs_root *root = BTRFS_I(inode)->root;
 	u64 num_bytes = btrfs_calc_trans_metadata_size(root, 1);
+	trace_btrfs_space_reservation(root->fs_info, "orphan",
+				      btrfs_ino(inode), num_bytes, 0);
 	btrfs_block_rsv_release(root, root->orphan_block_rsv, num_bytes);
 }
 
@@ -4213,12 +4348,11 @@
 	/* Need to be holding the i_mutex here if we aren't free space cache */
 	if (btrfs_is_free_space_inode(root, inode))
 		flush = 0;
-	else
-		WARN_ON(!mutex_is_locked(&inode->i_mutex));
 
 	if (flush && btrfs_transaction_in_commit(root->fs_info))
 		schedule_timeout(1);
 
+	mutex_lock(&BTRFS_I(inode)->delalloc_mutex);
 	num_bytes = ALIGN(num_bytes, root->sectorsize);
 
 	spin_lock(&BTRFS_I(inode)->lock);
@@ -4266,8 +4400,14 @@
 		if (dropped)
 			to_free += btrfs_calc_trans_metadata_size(root, dropped);
 
-		if (to_free)
+		if (to_free) {
 			btrfs_block_rsv_release(root, block_rsv, to_free);
+			trace_btrfs_space_reservation(root->fs_info,
+						      "delalloc",
+						      btrfs_ino(inode),
+						      to_free, 0);
+		}
+		mutex_unlock(&BTRFS_I(inode)->delalloc_mutex);
 		return ret;
 	}
 
@@ -4278,7 +4418,11 @@
 	}
 	BTRFS_I(inode)->reserved_extents += nr_extents;
 	spin_unlock(&BTRFS_I(inode)->lock);
+	mutex_unlock(&BTRFS_I(inode)->delalloc_mutex);
 
+	if (to_reserve)
+		trace_btrfs_space_reservation(root->fs_info,"delalloc",
+					      btrfs_ino(inode), to_reserve, 1);
 	block_rsv_add_bytes(block_rsv, to_reserve, 1);
 
 	return 0;
@@ -4308,6 +4452,8 @@
 	if (dropped > 0)
 		to_free += btrfs_calc_trans_metadata_size(root, dropped);
 
+	trace_btrfs_space_reservation(root->fs_info, "delalloc",
+				      btrfs_ino(inode), to_free, 0);
 	btrfs_block_rsv_release(root, &root->fs_info->delalloc_block_rsv,
 				to_free);
 }
@@ -4562,7 +4708,10 @@
 			cache->reserved += num_bytes;
 			space_info->bytes_reserved += num_bytes;
 			if (reserve == RESERVE_ALLOC) {
-				BUG_ON(space_info->bytes_may_use < num_bytes);
+				trace_btrfs_space_reservation(cache->fs_info,
+							      "space_info",
+							      (u64)space_info,
+							      num_bytes, 0);
 				space_info->bytes_may_use -= num_bytes;
 			}
 		}
@@ -4928,6 +5077,8 @@
 	rb_erase(&head->node.rb_node, &delayed_refs->root);
 
 	delayed_refs->num_entries--;
+	if (waitqueue_active(&delayed_refs->seq_wait))
+		wake_up(&delayed_refs->seq_wait);
 
 	/*
 	 * we don't take a ref on the node because we're removing it from the
@@ -4955,16 +5106,17 @@
 void btrfs_free_tree_block(struct btrfs_trans_handle *trans,
 			   struct btrfs_root *root,
 			   struct extent_buffer *buf,
-			   u64 parent, int last_ref)
+			   u64 parent, int last_ref, int for_cow)
 {
 	struct btrfs_block_group_cache *cache = NULL;
 	int ret;
 
 	if (root->root_key.objectid != BTRFS_TREE_LOG_OBJECTID) {
-		ret = btrfs_add_delayed_tree_ref(trans, buf->start, buf->len,
-						parent, root->root_key.objectid,
-						btrfs_header_level(buf),
-						BTRFS_DROP_DELAYED_REF, NULL);
+		ret = btrfs_add_delayed_tree_ref(root->fs_info, trans,
+					buf->start, buf->len,
+					parent, root->root_key.objectid,
+					btrfs_header_level(buf),
+					BTRFS_DROP_DELAYED_REF, NULL, for_cow);
 		BUG_ON(ret);
 	}
 
@@ -4999,12 +5151,12 @@
 	btrfs_put_block_group(cache);
 }
 
-int btrfs_free_extent(struct btrfs_trans_handle *trans,
-		      struct btrfs_root *root,
-		      u64 bytenr, u64 num_bytes, u64 parent,
-		      u64 root_objectid, u64 owner, u64 offset)
+int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root *root,
+		      u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid,
+		      u64 owner, u64 offset, int for_cow)
 {
 	int ret;
+	struct btrfs_fs_info *fs_info = root->fs_info;
 
 	/*
 	 * tree log blocks never actually go into the extent allocation
@@ -5016,14 +5168,17 @@
 		btrfs_pin_extent(root, bytenr, num_bytes, 1);
 		ret = 0;
 	} else if (owner < BTRFS_FIRST_FREE_OBJECTID) {
-		ret = btrfs_add_delayed_tree_ref(trans, bytenr, num_bytes,
+		ret = btrfs_add_delayed_tree_ref(fs_info, trans, bytenr,
+					num_bytes,
 					parent, root_objectid, (int)owner,
-					BTRFS_DROP_DELAYED_REF, NULL);
+					BTRFS_DROP_DELAYED_REF, NULL, for_cow);
 		BUG_ON(ret);
 	} else {
-		ret = btrfs_add_delayed_data_ref(trans, bytenr, num_bytes,
-					parent, root_objectid, owner,
-					offset, BTRFS_DROP_DELAYED_REF, NULL);
+		ret = btrfs_add_delayed_data_ref(fs_info, trans, bytenr,
+						num_bytes,
+						parent, root_objectid, owner,
+						offset, BTRFS_DROP_DELAYED_REF,
+						NULL, for_cow);
 		BUG_ON(ret);
 	}
 	return ret;
@@ -5146,6 +5301,8 @@
 	ins->objectid = 0;
 	ins->offset = 0;
 
+	trace_find_free_extent(orig_root, num_bytes, empty_size, data);
+
 	space_info = __find_space_info(root->fs_info, data);
 	if (!space_info) {
 		printk(KERN_ERR "No space info for %llu\n", data);
@@ -5295,15 +5452,6 @@
 		if (unlikely(block_group->ro))
 			goto loop;
 
-		spin_lock(&block_group->free_space_ctl->tree_lock);
-		if (cached &&
-		    block_group->free_space_ctl->free_space <
-		    num_bytes + empty_cluster + empty_size) {
-			spin_unlock(&block_group->free_space_ctl->tree_lock);
-			goto loop;
-		}
-		spin_unlock(&block_group->free_space_ctl->tree_lock);
-
 		/*
 		 * Ok we want to try and use the cluster allocator, so
 		 * lets look there
@@ -5331,6 +5479,8 @@
 			if (offset) {
 				/* we have a block, we're done */
 				spin_unlock(&last_ptr->refill_lock);
+				trace_btrfs_reserve_extent_cluster(root,
+					block_group, search_start, num_bytes);
 				goto checks;
 			}
 
@@ -5349,8 +5499,15 @@
 			 * plenty of times and not have found
 			 * anything, so we are likely way too
 			 * fragmented for the clustering stuff to find
-			 * anything.  */
-			if (loop >= LOOP_NO_EMPTY_SIZE) {
+			 * anything.
+			 *
+			 * However, if the cluster is taken from the
+			 * current block group, release the cluster
+			 * first, so that we stand a better chance of
+			 * succeeding in the unclustered
+			 * allocation.  */
+			if (loop >= LOOP_NO_EMPTY_SIZE &&
+			    last_ptr->block_group != block_group) {
 				spin_unlock(&last_ptr->refill_lock);
 				goto unclustered_alloc;
 			}
@@ -5361,6 +5518,11 @@
 			 */
 			btrfs_return_cluster_to_free_space(NULL, last_ptr);
 
+			if (loop >= LOOP_NO_EMPTY_SIZE) {
+				spin_unlock(&last_ptr->refill_lock);
+				goto unclustered_alloc;
+			}
+
 			/* allocate a cluster in this block group */
 			ret = btrfs_find_space_cluster(trans, root,
 					       block_group, last_ptr,
@@ -5377,6 +5539,9 @@
 				if (offset) {
 					/* we found one, proceed */
 					spin_unlock(&last_ptr->refill_lock);
+					trace_btrfs_reserve_extent_cluster(root,
+						block_group, search_start,
+						num_bytes);
 					goto checks;
 				}
 			} else if (!cached && loop > LOOP_CACHING_NOWAIT
@@ -5401,6 +5566,15 @@
 		}
 
 unclustered_alloc:
+		spin_lock(&block_group->free_space_ctl->tree_lock);
+		if (cached &&
+		    block_group->free_space_ctl->free_space <
+		    num_bytes + empty_cluster + empty_size) {
+			spin_unlock(&block_group->free_space_ctl->tree_lock);
+			goto loop;
+		}
+		spin_unlock(&block_group->free_space_ctl->tree_lock);
+
 		offset = btrfs_find_space_for_alloc(block_group, search_start,
 						    num_bytes, empty_size);
 		/*
@@ -5438,9 +5612,6 @@
 			goto loop;
 		}
 
-		ins->objectid = search_start;
-		ins->offset = num_bytes;
-
 		if (offset < search_start)
 			btrfs_add_free_space(used_block_group, offset,
 					     search_start - offset);
@@ -5457,6 +5628,8 @@
 		ins->objectid = search_start;
 		ins->offset = num_bytes;
 
+		trace_btrfs_reserve_extent(orig_root, block_group,
+					   search_start, num_bytes);
 		if (offset < search_start)
 			btrfs_add_free_space(used_block_group, offset,
 					     search_start - offset);
@@ -5842,9 +6015,10 @@
 
 	BUG_ON(root_objectid == BTRFS_TREE_LOG_OBJECTID);
 
-	ret = btrfs_add_delayed_data_ref(trans, ins->objectid, ins->offset,
-					 0, root_objectid, owner, offset,
-					 BTRFS_ADD_DELAYED_EXTENT, NULL);
+	ret = btrfs_add_delayed_data_ref(root->fs_info, trans, ins->objectid,
+					 ins->offset, 0,
+					 root_objectid, owner, offset,
+					 BTRFS_ADD_DELAYED_EXTENT, NULL, 0);
 	return ret;
 }
 
@@ -5997,10 +6171,11 @@
 	return ERR_PTR(-ENOSPC);
 }
 
-static void unuse_block_rsv(struct btrfs_block_rsv *block_rsv, u32 blocksize)
+static void unuse_block_rsv(struct btrfs_fs_info *fs_info,
+			    struct btrfs_block_rsv *block_rsv, u32 blocksize)
 {
 	block_rsv_add_bytes(block_rsv, blocksize, 0);
-	block_rsv_release_bytes(block_rsv, NULL, 0);
+	block_rsv_release_bytes(fs_info, block_rsv, NULL, 0);
 }
 
 /*
@@ -6014,7 +6189,7 @@
 					struct btrfs_root *root, u32 blocksize,
 					u64 parent, u64 root_objectid,
 					struct btrfs_disk_key *key, int level,
-					u64 hint, u64 empty_size)
+					u64 hint, u64 empty_size, int for_cow)
 {
 	struct btrfs_key ins;
 	struct btrfs_block_rsv *block_rsv;
@@ -6030,7 +6205,7 @@
 	ret = btrfs_reserve_extent(trans, root, blocksize, blocksize,
 				   empty_size, hint, (u64)-1, &ins, 0);
 	if (ret) {
-		unuse_block_rsv(block_rsv, blocksize);
+		unuse_block_rsv(root->fs_info, block_rsv, blocksize);
 		return ERR_PTR(ret);
 	}
 
@@ -6058,10 +6233,11 @@
 		extent_op->update_flags = 1;
 		extent_op->is_data = 0;
 
-		ret = btrfs_add_delayed_tree_ref(trans, ins.objectid,
+		ret = btrfs_add_delayed_tree_ref(root->fs_info, trans,
+					ins.objectid,
 					ins.offset, parent, root_objectid,
 					level, BTRFS_ADD_DELAYED_EXTENT,
-					extent_op);
+					extent_op, for_cow);
 		BUG_ON(ret);
 	}
 	return buf;
@@ -6078,6 +6254,7 @@
 	int keep_locks;
 	int reada_slot;
 	int reada_count;
+	int for_reloc;
 };
 
 #define DROP_REFERENCE	1
@@ -6216,9 +6393,9 @@
 	/* wc->stage == UPDATE_BACKREF */
 	if (!(wc->flags[level] & flag)) {
 		BUG_ON(!path->locks[level]);
-		ret = btrfs_inc_ref(trans, root, eb, 1);
+		ret = btrfs_inc_ref(trans, root, eb, 1, wc->for_reloc);
 		BUG_ON(ret);
-		ret = btrfs_dec_ref(trans, root, eb, 0);
+		ret = btrfs_dec_ref(trans, root, eb, 0, wc->for_reloc);
 		BUG_ON(ret);
 		ret = btrfs_set_disk_extent_flags(trans, root, eb->start,
 						  eb->len, flag, 0);
@@ -6362,7 +6539,7 @@
 		}
 
 		ret = btrfs_free_extent(trans, root, bytenr, blocksize, parent,
-					root->root_key.objectid, level - 1, 0);
+				root->root_key.objectid, level - 1, 0, 0);
 		BUG_ON(ret);
 	}
 	btrfs_tree_unlock(next);
@@ -6436,9 +6613,11 @@
 	if (wc->refs[level] == 1) {
 		if (level == 0) {
 			if (wc->flags[level] & BTRFS_BLOCK_FLAG_FULL_BACKREF)
-				ret = btrfs_dec_ref(trans, root, eb, 1);
+				ret = btrfs_dec_ref(trans, root, eb, 1,
+						    wc->for_reloc);
 			else
-				ret = btrfs_dec_ref(trans, root, eb, 0);
+				ret = btrfs_dec_ref(trans, root, eb, 0,
+						    wc->for_reloc);
 			BUG_ON(ret);
 		}
 		/* make block locked assertion in clean_tree_block happy */
@@ -6465,7 +6644,7 @@
 			       btrfs_header_owner(path->nodes[level + 1]));
 	}
 
-	btrfs_free_tree_block(trans, root, eb, parent, wc->refs[level] == 1);
+	btrfs_free_tree_block(trans, root, eb, parent, wc->refs[level] == 1, 0);
 out:
 	wc->refs[level] = 0;
 	wc->flags[level] = 0;
@@ -6549,7 +6728,8 @@
  * blocks are properly updated.
  */
 void btrfs_drop_snapshot(struct btrfs_root *root,
-			 struct btrfs_block_rsv *block_rsv, int update_ref)
+			 struct btrfs_block_rsv *block_rsv, int update_ref,
+			 int for_reloc)
 {
 	struct btrfs_path *path;
 	struct btrfs_trans_handle *trans;
@@ -6637,6 +6817,7 @@
 	wc->stage = DROP_REFERENCE;
 	wc->update_ref = update_ref;
 	wc->keep_locks = 0;
+	wc->for_reloc = for_reloc;
 	wc->reada_count = BTRFS_NODEPTRS_PER_BLOCK(root);
 
 	while (1) {
@@ -6721,6 +6902,7 @@
  * drop subtree rooted at tree block 'node'.
  *
  * NOTE: this function will unlock and release tree block 'node'
+ * only used by relocation code
  */
 int btrfs_drop_subtree(struct btrfs_trans_handle *trans,
 			struct btrfs_root *root,
@@ -6765,6 +6947,7 @@
 	wc->stage = DROP_REFERENCE;
 	wc->update_ref = 0;
 	wc->keep_locks = 1;
+	wc->for_reloc = 1;
 	wc->reada_count = BTRFS_NODEPTRS_PER_BLOCK(root);
 
 	while (1) {
@@ -6792,6 +6975,29 @@
 	u64 stripped = BTRFS_BLOCK_GROUP_RAID0 |
 		BTRFS_BLOCK_GROUP_RAID1 | BTRFS_BLOCK_GROUP_RAID10;
 
+	if (root->fs_info->balance_ctl) {
+		struct btrfs_balance_control *bctl = root->fs_info->balance_ctl;
+		u64 tgt = 0;
+
+		/* pick restriper's target profile and return */
+		if (flags & BTRFS_BLOCK_GROUP_DATA &&
+		    bctl->data.flags & BTRFS_BALANCE_ARGS_CONVERT) {
+			tgt = BTRFS_BLOCK_GROUP_DATA | bctl->data.target;
+		} else if (flags & BTRFS_BLOCK_GROUP_SYSTEM &&
+			   bctl->sys.flags & BTRFS_BALANCE_ARGS_CONVERT) {
+			tgt = BTRFS_BLOCK_GROUP_SYSTEM | bctl->sys.target;
+		} else if (flags & BTRFS_BLOCK_GROUP_METADATA &&
+			   bctl->meta.flags & BTRFS_BALANCE_ARGS_CONVERT) {
+			tgt = BTRFS_BLOCK_GROUP_METADATA | bctl->meta.target;
+		}
+
+		if (tgt) {
+			/* extended -> chunk profile */
+			tgt &= ~BTRFS_AVAIL_ALLOC_BIT_SINGLE;
+			return tgt;
+		}
+	}
+
 	/*
 	 * we add in the count of missing devices because we want
 	 * to make sure that any RAID levels on a degraded FS
@@ -7085,7 +7291,7 @@
 		 * space to fit our block group in.
 		 */
 		if (device->total_bytes > device->bytes_used + min_free) {
-			ret = find_free_dev_extent(NULL, device, min_free,
+			ret = find_free_dev_extent(device, min_free,
 						   &dev_offset, NULL);
 			if (!ret)
 				dev_nr++;
@@ -7447,6 +7653,7 @@
 	ret = update_space_info(root->fs_info, cache->flags, size, bytes_used,
 				&cache->space_info);
 	BUG_ON(ret);
+	update_global_block_rsv(root->fs_info);
 
 	spin_lock(&cache->space_info->lock);
 	cache->space_info->bytes_readonly += cache->bytes_super;
@@ -7466,6 +7673,22 @@
 	return 0;
 }
 
+static void clear_avail_alloc_bits(struct btrfs_fs_info *fs_info, u64 flags)
+{
+	u64 extra_flags = flags & BTRFS_BLOCK_GROUP_PROFILE_MASK;
+
+	/* chunk -> extended profile */
+	if (extra_flags == 0)
+		extra_flags = BTRFS_AVAIL_ALLOC_BIT_SINGLE;
+
+	if (flags & BTRFS_BLOCK_GROUP_DATA)
+		fs_info->avail_data_alloc_bits &= ~extra_flags;
+	if (flags & BTRFS_BLOCK_GROUP_METADATA)
+		fs_info->avail_metadata_alloc_bits &= ~extra_flags;
+	if (flags & BTRFS_BLOCK_GROUP_SYSTEM)
+		fs_info->avail_system_alloc_bits &= ~extra_flags;
+}
+
 int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
 			     struct btrfs_root *root, u64 group_start)
 {
@@ -7476,6 +7699,7 @@
 	struct btrfs_key key;
 	struct inode *inode;
 	int ret;
+	int index;
 	int factor;
 
 	root = root->fs_info->extent_root;
@@ -7491,6 +7715,7 @@
 	free_excluded_extents(root, block_group);
 
 	memcpy(&key, &block_group->key, sizeof(key));
+	index = get_block_group_index(block_group);
 	if (block_group->flags & (BTRFS_BLOCK_GROUP_DUP |
 				  BTRFS_BLOCK_GROUP_RAID1 |
 				  BTRFS_BLOCK_GROUP_RAID10))
@@ -7565,6 +7790,8 @@
 	 * are still on the list after taking the semaphore
 	 */
 	list_del_init(&block_group->list);
+	if (list_empty(&block_group->space_info->block_groups[index]))
+		clear_avail_alloc_bits(root->fs_info, block_group->flags);
 	up_write(&block_group->space_info->groups_sem);
 
 	if (block_group->cached == BTRFS_CACHE_STARTED)
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 49f3c9d..9d09a4f 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -18,6 +18,7 @@
 #include "ctree.h"
 #include "btrfs_inode.h"
 #include "volumes.h"
+#include "check-integrity.h"
 
 static struct kmem_cache *extent_state_cache;
 static struct kmem_cache *extent_buffer_cache;
@@ -1895,7 +1896,7 @@
 	}
 	bio->bi_bdev = dev->bdev;
 	bio_add_page(bio, page, length, start-page_offset(page));
-	submit_bio(WRITE_SYNC, bio);
+	btrfsic_submit_bio(WRITE_SYNC, bio);
 	wait_for_completion(&compl);
 
 	if (!test_bit(BIO_UPTODATE, &bio->bi_flags)) {
@@ -2393,7 +2394,7 @@
 		ret = tree->ops->submit_bio_hook(page->mapping->host, rw, bio,
 					   mirror_num, bio_flags, start);
 	else
-		submit_bio(rw, bio);
+		btrfsic_submit_bio(rw, bio);
 
 	if (bio_flagged(bio, BIO_EOPNOTSUPP))
 		ret = -EOPNOTSUPP;
@@ -3579,6 +3580,7 @@
 	atomic_set(&eb->blocking_writers, 0);
 	atomic_set(&eb->spinning_readers, 0);
 	atomic_set(&eb->spinning_writers, 0);
+	eb->lock_nested = 0;
 	init_waitqueue_head(&eb->write_lock_wq);
 	init_waitqueue_head(&eb->read_lock_wq);
 
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index 7604c30..bc6a042cb 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -129,6 +129,7 @@
 	struct list_head leak_list;
 	struct rcu_head rcu_head;
 	atomic_t refs;
+	pid_t lock_owner;
 
 	/* count of read lock holders on the extent buffer */
 	atomic_t write_locks;
@@ -137,6 +138,7 @@
 	atomic_t blocking_readers;
 	atomic_t spinning_readers;
 	atomic_t spinning_writers;
+	int lock_nested;
 
 	/* protects write locks */
 	rwlock_t lock;
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 034d985..859ba2d 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -678,7 +678,7 @@
 						disk_bytenr, num_bytes, 0,
 						root->root_key.objectid,
 						new_key.objectid,
-						start - extent_offset);
+						start - extent_offset, 0);
 				BUG_ON(ret);
 				*hint_byte = disk_bytenr;
 			}
@@ -753,7 +753,7 @@
 						disk_bytenr, num_bytes, 0,
 						root->root_key.objectid,
 						key.objectid, key.offset -
-						extent_offset);
+						extent_offset, 0);
 				BUG_ON(ret);
 				inode_sub_bytes(inode,
 						extent_end - key.offset);
@@ -962,7 +962,7 @@
 
 		ret = btrfs_inc_extent_ref(trans, root, bytenr, num_bytes, 0,
 					   root->root_key.objectid,
-					   ino, orig_offset);
+					   ino, orig_offset, 0);
 		BUG_ON(ret);
 
 		if (split == start) {
@@ -989,7 +989,7 @@
 		del_nr++;
 		ret = btrfs_free_extent(trans, root, bytenr, num_bytes,
 					0, root->root_key.objectid,
-					ino, orig_offset);
+					ino, orig_offset, 0);
 		BUG_ON(ret);
 	}
 	other_start = 0;
@@ -1006,7 +1006,7 @@
 		del_nr++;
 		ret = btrfs_free_extent(trans, root, bytenr, num_bytes,
 					0, root->root_key.objectid,
-					ino, orig_offset);
+					ino, orig_offset, 0);
 		BUG_ON(ret);
 	}
 	if (del_nr == 0) {
@@ -1274,7 +1274,6 @@
 						   dirty_pages);
 		if (dirty_pages < (root->leafsize >> PAGE_CACHE_SHIFT) + 1)
 			btrfs_btree_balance_dirty(root, 1);
-		btrfs_throttle(root);
 
 		pos += copied;
 		num_written += copied;
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index 9a897bf..d20ff87 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -319,9 +319,11 @@
 	io_ctl_unmap_page(io_ctl);
 
 	for (i = 0; i < io_ctl->num_pages; i++) {
-		ClearPageChecked(io_ctl->pages[i]);
-		unlock_page(io_ctl->pages[i]);
-		page_cache_release(io_ctl->pages[i]);
+		if (io_ctl->pages[i]) {
+			ClearPageChecked(io_ctl->pages[i]);
+			unlock_page(io_ctl->pages[i]);
+			page_cache_release(io_ctl->pages[i]);
+		}
 	}
 }
 
@@ -635,7 +637,10 @@
 	if (!num_entries)
 		return 0;
 
-	io_ctl_init(&io_ctl, inode, root);
+	ret = io_ctl_init(&io_ctl, inode, root);
+	if (ret)
+		return ret;
+
 	ret = readahead_cache(inode);
 	if (ret)
 		goto out;
@@ -838,7 +843,7 @@
 	struct io_ctl io_ctl;
 	struct list_head bitmap_list;
 	struct btrfs_key key;
-	u64 start, end, len;
+	u64 start, extent_start, extent_end, len;
 	int entries = 0;
 	int bitmaps = 0;
 	int ret;
@@ -849,7 +854,9 @@
 	if (!i_size_read(inode))
 		return -1;
 
-	io_ctl_init(&io_ctl, inode, root);
+	ret = io_ctl_init(&io_ctl, inode, root);
+	if (ret)
+		return -1;
 
 	/* Get the cluster for this block_group if it exists */
 	if (block_group && !list_empty(&block_group->cluster_list))
@@ -857,25 +864,12 @@
 				     struct btrfs_free_cluster,
 				     block_group_list);
 
-	/*
-	 * We shouldn't have switched the pinned extents yet so this is the
-	 * right one
-	 */
-	unpin = root->fs_info->pinned_extents;
-
 	/* Lock all pages first so we can lock the extent safely. */
 	io_ctl_prepare_pages(&io_ctl, inode, 0);
 
 	lock_extent_bits(&BTRFS_I(inode)->io_tree, 0, i_size_read(inode) - 1,
 			 0, &cached_state, GFP_NOFS);
 
-	/*
-	 * When searching for pinned extents, we need to start at our start
-	 * offset.
-	 */
-	if (block_group)
-		start = block_group->key.objectid;
-
 	node = rb_first(&ctl->free_space_offset);
 	if (!node && cluster) {
 		node = rb_first(&cluster->root);
@@ -918,9 +912,20 @@
 	 * We want to add any pinned extents to our free space cache
 	 * so we don't leak the space
 	 */
+
+	/*
+	 * We shouldn't have switched the pinned extents yet so this is the
+	 * right one
+	 */
+	unpin = root->fs_info->pinned_extents;
+
+	if (block_group)
+		start = block_group->key.objectid;
+
 	while (block_group && (start < block_group->key.objectid +
 			       block_group->key.offset)) {
-		ret = find_first_extent_bit(unpin, start, &start, &end,
+		ret = find_first_extent_bit(unpin, start,
+					    &extent_start, &extent_end,
 					    EXTENT_DIRTY);
 		if (ret) {
 			ret = 0;
@@ -928,20 +933,21 @@
 		}
 
 		/* This pinned extent is out of our range */
-		if (start >= block_group->key.objectid +
+		if (extent_start >= block_group->key.objectid +
 		    block_group->key.offset)
 			break;
 
-		len = block_group->key.objectid +
-			block_group->key.offset - start;
-		len = min(len, end + 1 - start);
+		extent_start = max(extent_start, start);
+		extent_end = min(block_group->key.objectid +
+				 block_group->key.offset, extent_end + 1);
+		len = extent_end - extent_start;
 
 		entries++;
-		ret = io_ctl_add_entry(&io_ctl, start, len, NULL);
+		ret = io_ctl_add_entry(&io_ctl, extent_start, len, NULL);
 		if (ret)
 			goto out_nospc;
 
-		start = end + 1;
+		start = extent_end;
 	}
 
 	/* Write out the bitmaps */
@@ -2283,23 +2289,23 @@
 static int btrfs_bitmap_cluster(struct btrfs_block_group_cache *block_group,
 				struct btrfs_free_space *entry,
 				struct btrfs_free_cluster *cluster,
-				u64 offset, u64 bytes, u64 min_bytes)
+				u64 offset, u64 bytes,
+				u64 cont1_bytes, u64 min_bytes)
 {
 	struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
 	unsigned long next_zero;
 	unsigned long i;
-	unsigned long search_bits;
-	unsigned long total_bits;
+	unsigned long want_bits;
+	unsigned long min_bits;
 	unsigned long found_bits;
 	unsigned long start = 0;
 	unsigned long total_found = 0;
 	int ret;
-	bool found = false;
 
 	i = offset_to_bit(entry->offset, block_group->sectorsize,
 			  max_t(u64, offset, entry->offset));
-	search_bits = bytes_to_bits(bytes, block_group->sectorsize);
-	total_bits = bytes_to_bits(min_bytes, block_group->sectorsize);
+	want_bits = bytes_to_bits(bytes, block_group->sectorsize);
+	min_bits = bytes_to_bits(min_bytes, block_group->sectorsize);
 
 again:
 	found_bits = 0;
@@ -2308,7 +2314,7 @@
 	     i = find_next_bit(entry->bitmap, BITS_PER_BITMAP, i + 1)) {
 		next_zero = find_next_zero_bit(entry->bitmap,
 					       BITS_PER_BITMAP, i);
-		if (next_zero - i >= search_bits) {
+		if (next_zero - i >= min_bits) {
 			found_bits = next_zero - i;
 			break;
 		}
@@ -2318,10 +2324,9 @@
 	if (!found_bits)
 		return -ENOSPC;
 
-	if (!found) {
+	if (!total_found) {
 		start = i;
 		cluster->max_size = 0;
-		found = true;
 	}
 
 	total_found += found_bits;
@@ -2329,13 +2334,8 @@
 	if (cluster->max_size < found_bits * block_group->sectorsize)
 		cluster->max_size = found_bits * block_group->sectorsize;
 
-	if (total_found < total_bits) {
-		i = find_next_bit(entry->bitmap, BITS_PER_BITMAP, next_zero);
-		if (i - start > total_bits * 2) {
-			total_found = 0;
-			cluster->max_size = 0;
-			found = false;
-		}
+	if (total_found < want_bits || cluster->max_size < cont1_bytes) {
+		i = next_zero + 1;
 		goto again;
 	}
 
@@ -2346,28 +2346,31 @@
 				 &entry->offset_index, 1);
 	BUG_ON(ret);
 
+	trace_btrfs_setup_cluster(block_group, cluster,
+				  total_found * block_group->sectorsize, 1);
 	return 0;
 }
 
 /*
  * This searches the block group for just extents to fill the cluster with.
+ * Try to find a cluster with at least bytes total bytes, at least one
+ * extent of cont1_bytes, and other clusters of at least min_bytes.
  */
 static noinline int
 setup_cluster_no_bitmap(struct btrfs_block_group_cache *block_group,
 			struct btrfs_free_cluster *cluster,
 			struct list_head *bitmaps, u64 offset, u64 bytes,
-			u64 min_bytes)
+			u64 cont1_bytes, u64 min_bytes)
 {
 	struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
 	struct btrfs_free_space *first = NULL;
 	struct btrfs_free_space *entry = NULL;
-	struct btrfs_free_space *prev = NULL;
 	struct btrfs_free_space *last;
 	struct rb_node *node;
 	u64 window_start;
 	u64 window_free;
 	u64 max_extent;
-	u64 max_gap = 128 * 1024;
+	u64 total_size = 0;
 
 	entry = tree_search_offset(ctl, offset, 0, 1);
 	if (!entry)
@@ -2377,8 +2380,8 @@
 	 * We don't want bitmaps, so just move along until we find a normal
 	 * extent entry.
 	 */
-	while (entry->bitmap) {
-		if (list_empty(&entry->list))
+	while (entry->bitmap || entry->bytes < min_bytes) {
+		if (entry->bitmap && list_empty(&entry->list))
 			list_add_tail(&entry->list, bitmaps);
 		node = rb_next(&entry->offset_index);
 		if (!node)
@@ -2391,12 +2394,9 @@
 	max_extent = entry->bytes;
 	first = entry;
 	last = entry;
-	prev = entry;
 
-	while (window_free <= min_bytes) {
-		node = rb_next(&entry->offset_index);
-		if (!node)
-			return -ENOSPC;
+	for (node = rb_next(&entry->offset_index); node;
+	     node = rb_next(&entry->offset_index)) {
 		entry = rb_entry(node, struct btrfs_free_space, offset_index);
 
 		if (entry->bitmap) {
@@ -2405,26 +2405,18 @@
 			continue;
 		}
 
-		/*
-		 * we haven't filled the empty size and the window is
-		 * very large.  reset and try again
-		 */
-		if (entry->offset - (prev->offset + prev->bytes) > max_gap ||
-		    entry->offset - window_start > (min_bytes * 2)) {
-			first = entry;
-			window_start = entry->offset;
-			window_free = entry->bytes;
-			last = entry;
+		if (entry->bytes < min_bytes)
+			continue;
+
+		last = entry;
+		window_free += entry->bytes;
+		if (entry->bytes > max_extent)
 			max_extent = entry->bytes;
-		} else {
-			last = entry;
-			window_free += entry->bytes;
-			if (entry->bytes > max_extent)
-				max_extent = entry->bytes;
-		}
-		prev = entry;
 	}
 
+	if (window_free < bytes || max_extent < cont1_bytes)
+		return -ENOSPC;
+
 	cluster->window_start = first->offset;
 
 	node = &first->offset_index;
@@ -2438,17 +2430,18 @@
 
 		entry = rb_entry(node, struct btrfs_free_space, offset_index);
 		node = rb_next(&entry->offset_index);
-		if (entry->bitmap)
+		if (entry->bitmap || entry->bytes < min_bytes)
 			continue;
 
 		rb_erase(&entry->offset_index, &ctl->free_space_offset);
 		ret = tree_insert_offset(&cluster->root, entry->offset,
 					 &entry->offset_index, 0);
+		total_size += entry->bytes;
 		BUG_ON(ret);
 	} while (node && entry != last);
 
 	cluster->max_size = max_extent;
-
+	trace_btrfs_setup_cluster(block_group, cluster, total_size, 0);
 	return 0;
 }
 
@@ -2460,7 +2453,7 @@
 setup_cluster_bitmap(struct btrfs_block_group_cache *block_group,
 		     struct btrfs_free_cluster *cluster,
 		     struct list_head *bitmaps, u64 offset, u64 bytes,
-		     u64 min_bytes)
+		     u64 cont1_bytes, u64 min_bytes)
 {
 	struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
 	struct btrfs_free_space *entry;
@@ -2485,7 +2478,7 @@
 		if (entry->bytes < min_bytes)
 			continue;
 		ret = btrfs_bitmap_cluster(block_group, entry, cluster, offset,
-					   bytes, min_bytes);
+					   bytes, cont1_bytes, min_bytes);
 		if (!ret)
 			return 0;
 	}
@@ -2499,7 +2492,7 @@
 
 /*
  * here we try to find a cluster of blocks in a block group.  The goal
- * is to find at least bytes free and up to empty_size + bytes free.
+ * is to find at least bytes+empty_size.
  * We might not find them all in one contiguous area.
  *
  * returns zero and sets up cluster if things worked out, otherwise
@@ -2515,23 +2508,24 @@
 	struct btrfs_free_space *entry, *tmp;
 	LIST_HEAD(bitmaps);
 	u64 min_bytes;
+	u64 cont1_bytes;
 	int ret;
 
-	/* for metadata, allow allocates with more holes */
+	/*
+	 * Choose the minimum extent size we'll require for this
+	 * cluster.  For SSD_SPREAD, don't allow any fragmentation.
+	 * For metadata, allow allocates with smaller extents.  For
+	 * data, keep it dense.
+	 */
 	if (btrfs_test_opt(root, SSD_SPREAD)) {
-		min_bytes = bytes + empty_size;
+		cont1_bytes = min_bytes = bytes + empty_size;
 	} else if (block_group->flags & BTRFS_BLOCK_GROUP_METADATA) {
-		/*
-		 * we want to do larger allocations when we are
-		 * flushing out the delayed refs, it helps prevent
-		 * making more work as we go along.
-		 */
-		if (trans->transaction->delayed_refs.flushing)
-			min_bytes = max(bytes, (bytes + empty_size) >> 1);
-		else
-			min_bytes = max(bytes, (bytes + empty_size) >> 4);
-	} else
-		min_bytes = max(bytes, (bytes + empty_size) >> 2);
+		cont1_bytes = bytes;
+		min_bytes = block_group->sectorsize;
+	} else {
+		cont1_bytes = max(bytes, (bytes + empty_size) >> 2);
+		min_bytes = block_group->sectorsize;
+	}
 
 	spin_lock(&ctl->tree_lock);
 
@@ -2539,7 +2533,7 @@
 	 * If we know we don't have enough space to make a cluster don't even
 	 * bother doing all the work to try and find one.
 	 */
-	if (ctl->free_space < min_bytes) {
+	if (ctl->free_space < bytes) {
 		spin_unlock(&ctl->tree_lock);
 		return -ENOSPC;
 	}
@@ -2552,11 +2546,17 @@
 		goto out;
 	}
 
+	trace_btrfs_find_cluster(block_group, offset, bytes, empty_size,
+				 min_bytes);
+
+	INIT_LIST_HEAD(&bitmaps);
 	ret = setup_cluster_no_bitmap(block_group, cluster, &bitmaps, offset,
-				      bytes, min_bytes);
+				      bytes + empty_size,
+				      cont1_bytes, min_bytes);
 	if (ret)
 		ret = setup_cluster_bitmap(block_group, cluster, &bitmaps,
-					   offset, bytes, min_bytes);
+					   offset, bytes + empty_size,
+					   cont1_bytes, min_bytes);
 
 	/* Clear our temporary list */
 	list_for_each_entry_safe(entry, tmp, &bitmaps, list)
@@ -2567,6 +2567,8 @@
 		list_add_tail(&cluster->block_group_list,
 			      &block_group->cluster_list);
 		cluster->block_group = block_group;
+	} else {
+		trace_btrfs_failed_cluster_setup(block_group);
 	}
 out:
 	spin_unlock(&cluster->lock);
@@ -2588,17 +2590,57 @@
 	cluster->block_group = NULL;
 }
 
-int btrfs_trim_block_group(struct btrfs_block_group_cache *block_group,
-			   u64 *trimmed, u64 start, u64 end, u64 minlen)
+static int do_trimming(struct btrfs_block_group_cache *block_group,
+		       u64 *total_trimmed, u64 start, u64 bytes,
+		       u64 reserved_start, u64 reserved_bytes)
+{
+	struct btrfs_space_info *space_info = block_group->space_info;
+	struct btrfs_fs_info *fs_info = block_group->fs_info;
+	int ret;
+	int update = 0;
+	u64 trimmed = 0;
+
+	spin_lock(&space_info->lock);
+	spin_lock(&block_group->lock);
+	if (!block_group->ro) {
+		block_group->reserved += reserved_bytes;
+		space_info->bytes_reserved += reserved_bytes;
+		update = 1;
+	}
+	spin_unlock(&block_group->lock);
+	spin_unlock(&space_info->lock);
+
+	ret = btrfs_error_discard_extent(fs_info->extent_root,
+					 start, bytes, &trimmed);
+	if (!ret)
+		*total_trimmed += trimmed;
+
+	btrfs_add_free_space(block_group, reserved_start, reserved_bytes);
+
+	if (update) {
+		spin_lock(&space_info->lock);
+		spin_lock(&block_group->lock);
+		if (block_group->ro)
+			space_info->bytes_readonly += reserved_bytes;
+		block_group->reserved -= reserved_bytes;
+		space_info->bytes_reserved -= reserved_bytes;
+		spin_unlock(&space_info->lock);
+		spin_unlock(&block_group->lock);
+	}
+
+	return ret;
+}
+
+static int trim_no_bitmap(struct btrfs_block_group_cache *block_group,
+			  u64 *total_trimmed, u64 start, u64 end, u64 minlen)
 {
 	struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
-	struct btrfs_free_space *entry = NULL;
-	struct btrfs_fs_info *fs_info = block_group->fs_info;
-	u64 bytes = 0;
-	u64 actually_trimmed;
+	struct btrfs_free_space *entry;
+	struct rb_node *node;
 	int ret = 0;
-
-	*trimmed = 0;
+	u64 extent_start;
+	u64 extent_bytes;
+	u64 bytes;
 
 	while (start < end) {
 		spin_lock(&ctl->tree_lock);
@@ -2609,81 +2651,47 @@
 		}
 
 		entry = tree_search_offset(ctl, start, 0, 1);
-		if (!entry)
-			entry = tree_search_offset(ctl,
-						   offset_to_bitmap(ctl, start),
-						   1, 1);
-
-		if (!entry || entry->offset >= end) {
+		if (!entry) {
 			spin_unlock(&ctl->tree_lock);
 			break;
 		}
 
-		if (entry->bitmap) {
-			ret = search_bitmap(ctl, entry, &start, &bytes);
-			if (!ret) {
-				if (start >= end) {
-					spin_unlock(&ctl->tree_lock);
-					break;
-				}
-				bytes = min(bytes, end - start);
-				bitmap_clear_bits(ctl, entry, start, bytes);
-				if (entry->bytes == 0)
-					free_bitmap(ctl, entry);
-			} else {
-				start = entry->offset + BITS_PER_BITMAP *
-					block_group->sectorsize;
+		/* skip bitmaps */
+		while (entry->bitmap) {
+			node = rb_next(&entry->offset_index);
+			if (!node) {
 				spin_unlock(&ctl->tree_lock);
-				ret = 0;
-				continue;
+				goto out;
 			}
-		} else {
-			start = entry->offset;
-			bytes = min(entry->bytes, end - start);
-			unlink_free_space(ctl, entry);
-			kmem_cache_free(btrfs_free_space_cachep, entry);
+			entry = rb_entry(node, struct btrfs_free_space,
+					 offset_index);
 		}
 
+		if (entry->offset >= end) {
+			spin_unlock(&ctl->tree_lock);
+			break;
+		}
+
+		extent_start = entry->offset;
+		extent_bytes = entry->bytes;
+		start = max(start, extent_start);
+		bytes = min(extent_start + extent_bytes, end) - start;
+		if (bytes < minlen) {
+			spin_unlock(&ctl->tree_lock);
+			goto next;
+		}
+
+		unlink_free_space(ctl, entry);
+		kmem_cache_free(btrfs_free_space_cachep, entry);
+
 		spin_unlock(&ctl->tree_lock);
 
-		if (bytes >= minlen) {
-			struct btrfs_space_info *space_info;
-			int update = 0;
-
-			space_info = block_group->space_info;
-			spin_lock(&space_info->lock);
-			spin_lock(&block_group->lock);
-			if (!block_group->ro) {
-				block_group->reserved += bytes;
-				space_info->bytes_reserved += bytes;
-				update = 1;
-			}
-			spin_unlock(&block_group->lock);
-			spin_unlock(&space_info->lock);
-
-			ret = btrfs_error_discard_extent(fs_info->extent_root,
-							 start,
-							 bytes,
-							 &actually_trimmed);
-
-			btrfs_add_free_space(block_group, start, bytes);
-			if (update) {
-				spin_lock(&space_info->lock);
-				spin_lock(&block_group->lock);
-				if (block_group->ro)
-					space_info->bytes_readonly += bytes;
-				block_group->reserved -= bytes;
-				space_info->bytes_reserved -= bytes;
-				spin_unlock(&space_info->lock);
-				spin_unlock(&block_group->lock);
-			}
-
-			if (ret)
-				break;
-			*trimmed += actually_trimmed;
-		}
+		ret = do_trimming(block_group, total_trimmed, start, bytes,
+				  extent_start, extent_bytes);
+		if (ret)
+			break;
+next:
 		start += bytes;
-		bytes = 0;
 
 		if (fatal_signal_pending(current)) {
 			ret = -ERESTARTSYS;
@@ -2692,6 +2700,93 @@
 
 		cond_resched();
 	}
+out:
+	return ret;
+}
+
+static int trim_bitmaps(struct btrfs_block_group_cache *block_group,
+			u64 *total_trimmed, u64 start, u64 end, u64 minlen)
+{
+	struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
+	struct btrfs_free_space *entry;
+	int ret = 0;
+	int ret2;
+	u64 bytes;
+	u64 offset = offset_to_bitmap(ctl, start);
+
+	while (offset < end) {
+		bool next_bitmap = false;
+
+		spin_lock(&ctl->tree_lock);
+
+		if (ctl->free_space < minlen) {
+			spin_unlock(&ctl->tree_lock);
+			break;
+		}
+
+		entry = tree_search_offset(ctl, offset, 1, 0);
+		if (!entry) {
+			spin_unlock(&ctl->tree_lock);
+			next_bitmap = true;
+			goto next;
+		}
+
+		bytes = minlen;
+		ret2 = search_bitmap(ctl, entry, &start, &bytes);
+		if (ret2 || start >= end) {
+			spin_unlock(&ctl->tree_lock);
+			next_bitmap = true;
+			goto next;
+		}
+
+		bytes = min(bytes, end - start);
+		if (bytes < minlen) {
+			spin_unlock(&ctl->tree_lock);
+			goto next;
+		}
+
+		bitmap_clear_bits(ctl, entry, start, bytes);
+		if (entry->bytes == 0)
+			free_bitmap(ctl, entry);
+
+		spin_unlock(&ctl->tree_lock);
+
+		ret = do_trimming(block_group, total_trimmed, start, bytes,
+				  start, bytes);
+		if (ret)
+			break;
+next:
+		if (next_bitmap) {
+			offset += BITS_PER_BITMAP * ctl->unit;
+		} else {
+			start += bytes;
+			if (start >= offset + BITS_PER_BITMAP * ctl->unit)
+				offset += BITS_PER_BITMAP * ctl->unit;
+		}
+
+		if (fatal_signal_pending(current)) {
+			ret = -ERESTARTSYS;
+			break;
+		}
+
+		cond_resched();
+	}
+
+	return ret;
+}
+
+int btrfs_trim_block_group(struct btrfs_block_group_cache *block_group,
+			   u64 *trimmed, u64 start, u64 end, u64 minlen)
+{
+	int ret;
+
+	*trimmed = 0;
+
+	ret = trim_no_bitmap(block_group, trimmed, start, end, minlen);
+	if (ret)
+		return ret;
+
+	ret = trim_bitmaps(block_group, trimmed, start, end, minlen);
 
 	return ret;
 }
diff --git a/fs/btrfs/inode-map.c b/fs/btrfs/inode-map.c
index f8962a9..213ffa8 100644
--- a/fs/btrfs/inode-map.c
+++ b/fs/btrfs/inode-map.c
@@ -438,6 +438,8 @@
 					  trans->bytes_reserved);
 	if (ret)
 		goto out;
+	trace_btrfs_space_reservation(root->fs_info, "ino_cache", (u64)trans,
+				      trans->bytes_reserved, 1);
 again:
 	inode = lookup_free_ino_inode(root, path);
 	if (IS_ERR(inode) && PTR_ERR(inode) != -ENOENT) {
@@ -498,6 +500,8 @@
 out_put:
 	iput(inode);
 out_release:
+	trace_btrfs_space_reservation(root->fs_info, "ino_cache", (u64)trans,
+				      trans->bytes_reserved, 0);
 	btrfs_block_rsv_release(root, trans->block_rsv, trans->bytes_reserved);
 out:
 	trans->block_rsv = rsv;
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 81b235a..0da19a0 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1951,12 +1951,28 @@
 void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans,
 			      struct btrfs_root *root)
 {
+	struct btrfs_block_rsv *block_rsv;
 	int ret;
 
 	if (!list_empty(&root->orphan_list) ||
 	    root->orphan_cleanup_state != ORPHAN_CLEANUP_DONE)
 		return;
 
+	spin_lock(&root->orphan_lock);
+	if (!list_empty(&root->orphan_list)) {
+		spin_unlock(&root->orphan_lock);
+		return;
+	}
+
+	if (root->orphan_cleanup_state != ORPHAN_CLEANUP_DONE) {
+		spin_unlock(&root->orphan_lock);
+		return;
+	}
+
+	block_rsv = root->orphan_block_rsv;
+	root->orphan_block_rsv = NULL;
+	spin_unlock(&root->orphan_lock);
+
 	if (root->orphan_item_inserted &&
 	    btrfs_root_refs(&root->root_item) > 0) {
 		ret = btrfs_del_orphan_item(trans, root->fs_info->tree_root,
@@ -1965,10 +1981,9 @@
 		root->orphan_item_inserted = 0;
 	}
 
-	if (root->orphan_block_rsv) {
-		WARN_ON(root->orphan_block_rsv->size > 0);
-		btrfs_free_block_rsv(root, root->orphan_block_rsv);
-		root->orphan_block_rsv = NULL;
+	if (block_rsv) {
+		WARN_ON(block_rsv->size > 0);
+		btrfs_free_block_rsv(root, block_rsv);
 	}
 }
 
@@ -2224,14 +2239,7 @@
 				continue;
 			}
 			nr_truncate++;
-			/*
-			 * Need to hold the imutex for reservation purposes, not
-			 * a huge deal here but I have a WARN_ON in
-			 * btrfs_delalloc_reserve_space to catch offenders.
-			 */
-			mutex_lock(&inode->i_mutex);
 			ret = btrfs_truncate(inode);
-			mutex_unlock(&inode->i_mutex);
 		} else {
 			nr_unlink++;
 		}
@@ -2845,7 +2853,7 @@
 		BUG_ON(!root->fs_info->enospc_unlink);
 		root->fs_info->enospc_unlink = 0;
 	}
-	btrfs_end_transaction_throttle(trans, root);
+	btrfs_end_transaction(trans, root);
 }
 
 static int btrfs_unlink(struct inode *dir, struct dentry *dentry)
@@ -3009,7 +3017,6 @@
 	int pending_del_nr = 0;
 	int pending_del_slot = 0;
 	int extent_type = -1;
-	int encoding;
 	int ret;
 	int err = 0;
 	u64 ino = btrfs_ino(inode);
@@ -3059,7 +3066,6 @@
 		leaf = path->nodes[0];
 		btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);
 		found_type = btrfs_key_type(&found_key);
-		encoding = 0;
 
 		if (found_key.objectid != ino)
 			break;
@@ -3072,10 +3078,6 @@
 			fi = btrfs_item_ptr(leaf, path->slots[0],
 					    struct btrfs_file_extent_item);
 			extent_type = btrfs_file_extent_type(leaf, fi);
-			encoding = btrfs_file_extent_compression(leaf, fi);
-			encoding |= btrfs_file_extent_encryption(leaf, fi);
-			encoding |= btrfs_file_extent_other_encoding(leaf, fi);
-
 			if (extent_type != BTRFS_FILE_EXTENT_INLINE) {
 				item_end +=
 				    btrfs_file_extent_num_bytes(leaf, fi);
@@ -3103,7 +3105,7 @@
 		if (extent_type != BTRFS_FILE_EXTENT_INLINE) {
 			u64 num_dec;
 			extent_start = btrfs_file_extent_disk_bytenr(leaf, fi);
-			if (!del_item && !encoding) {
+			if (!del_item) {
 				u64 orig_num_bytes =
 					btrfs_file_extent_num_bytes(leaf, fi);
 				extent_num_bytes = new_size -
@@ -3179,7 +3181,7 @@
 			ret = btrfs_free_extent(trans, root, extent_start,
 						extent_num_bytes, 0,
 						btrfs_header_owner(leaf),
-						ino, extent_offset);
+						ino, extent_offset, 0);
 			BUG_ON(ret);
 		}
 
@@ -3434,7 +3436,7 @@
 		i_size_write(inode, newsize);
 		btrfs_ordered_update_i_size(inode, i_size_read(inode), NULL);
 		ret = btrfs_update_inode(trans, root, inode);
-		btrfs_end_transaction_throttle(trans, root);
+		btrfs_end_transaction(trans, root);
 	} else {
 
 		/*
@@ -4655,7 +4657,7 @@
 	}
 out_unlock:
 	nr = trans->blocks_used;
-	btrfs_end_transaction_throttle(trans, root);
+	btrfs_end_transaction(trans, root);
 	btrfs_btree_balance_dirty(root, nr);
 	if (drop_inode) {
 		inode_dec_link_count(inode);
@@ -4723,7 +4725,7 @@
 	}
 out_unlock:
 	nr = trans->blocks_used;
-	btrfs_end_transaction_throttle(trans, root);
+	btrfs_end_transaction(trans, root);
 	if (drop_inode) {
 		inode_dec_link_count(inode);
 		iput(inode);
@@ -4782,7 +4784,7 @@
 	}
 
 	nr = trans->blocks_used;
-	btrfs_end_transaction_throttle(trans, root);
+	btrfs_end_transaction(trans, root);
 fail:
 	if (drop_inode) {
 		inode_dec_link_count(inode);
@@ -4848,7 +4850,7 @@
 
 out_fail:
 	nr = trans->blocks_used;
-	btrfs_end_transaction_throttle(trans, root);
+	btrfs_end_transaction(trans, root);
 	if (drop_on_err)
 		iput(inode);
 	btrfs_btree_balance_dirty(root, nr);
@@ -5121,7 +5123,7 @@
 			}
 			flush_dcache_page(page);
 		} else if (create && PageUptodate(page)) {
-			WARN_ON(1);
+			BUG();
 			if (!trans) {
 				kunmap(page);
 				free_extent_map(em);
@@ -6402,10 +6404,7 @@
 	u64 page_start;
 	u64 page_end;
 
-	/* Need this to keep space reservations serialized */
-	mutex_lock(&inode->i_mutex);
 	ret  = btrfs_delalloc_reserve_space(inode, PAGE_CACHE_SIZE);
-	mutex_unlock(&inode->i_mutex);
 	if (!ret)
 		ret = btrfs_update_time(vma->vm_file);
 	if (ret) {
@@ -6494,8 +6493,8 @@
 	if (!ret)
 		return VM_FAULT_LOCKED;
 	unlock_page(page);
-	btrfs_delalloc_release_space(inode, PAGE_CACHE_SIZE);
 out:
+	btrfs_delalloc_release_space(inode, PAGE_CACHE_SIZE);
 	return ret;
 }
 
@@ -6668,7 +6667,7 @@
 			err = ret;
 
 		nr = trans->blocks_used;
-		ret = btrfs_end_transaction_throttle(trans, root);
+		ret = btrfs_end_transaction(trans, root);
 		btrfs_btree_balance_dirty(root, nr);
 	}
 
@@ -6749,6 +6748,7 @@
 	extent_io_tree_init(&ei->io_tree, &inode->i_data);
 	extent_io_tree_init(&ei->io_failure_tree, &inode->i_data);
 	mutex_init(&ei->log_mutex);
+	mutex_init(&ei->delalloc_mutex);
 	btrfs_ordered_inode_tree_init(&ei->ordered_tree);
 	INIT_LIST_HEAD(&ei->i_orphan);
 	INIT_LIST_HEAD(&ei->delalloc_inodes);
@@ -7074,7 +7074,7 @@
 		btrfs_end_log_trans(root);
 	}
 out_fail:
-	btrfs_end_transaction_throttle(trans, root);
+	btrfs_end_transaction(trans, root);
 out_notrans:
 	if (old_ino == BTRFS_FIRST_FREE_OBJECTID)
 		up_read(&root->fs_info->subvol_sem);
@@ -7246,7 +7246,7 @@
 	if (!err)
 		d_instantiate(dentry, inode);
 	nr = trans->blocks_used;
-	btrfs_end_transaction_throttle(trans, root);
+	btrfs_end_transaction(trans, root);
 	if (drop_inode) {
 		inode_dec_link_count(inode);
 		iput(inode);
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 5441ff1..ab62001 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -176,6 +176,8 @@
 	struct btrfs_trans_handle *trans;
 	unsigned int flags, oldflags;
 	int ret;
+	u64 ip_oldflags;
+	unsigned int i_oldflags;
 
 	if (btrfs_root_readonly(root))
 		return -EROFS;
@@ -192,6 +194,9 @@
 
 	mutex_lock(&inode->i_mutex);
 
+	ip_oldflags = ip->flags;
+	i_oldflags = inode->i_flags;
+
 	flags = btrfs_mask_flags(inode->i_mode, flags);
 	oldflags = btrfs_flags_to_ioctl(ip->flags);
 	if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) {
@@ -249,19 +254,24 @@
 		ip->flags &= ~(BTRFS_INODE_COMPRESS | BTRFS_INODE_NOCOMPRESS);
 	}
 
-	trans = btrfs_join_transaction(root);
-	BUG_ON(IS_ERR(trans));
+	trans = btrfs_start_transaction(root, 1);
+	if (IS_ERR(trans)) {
+		ret = PTR_ERR(trans);
+		goto out_drop;
+	}
 
 	btrfs_update_iflags(inode);
 	inode->i_ctime = CURRENT_TIME;
 	ret = btrfs_update_inode(trans, root, inode);
-	BUG_ON(ret);
 
 	btrfs_end_transaction(trans, root);
+ out_drop:
+	if (ret) {
+		ip->flags = ip_oldflags;
+		inode->i_flags = i_oldflags;
+	}
 
 	mnt_drop_write_file(file);
-
-	ret = 0;
  out_unlock:
 	mutex_unlock(&inode->i_mutex);
 	return ret;
@@ -276,14 +286,13 @@
 
 static noinline int btrfs_ioctl_fitrim(struct file *file, void __user *arg)
 {
-	struct btrfs_root *root = fdentry(file)->d_sb->s_fs_info;
-	struct btrfs_fs_info *fs_info = root->fs_info;
+	struct btrfs_fs_info *fs_info = btrfs_sb(fdentry(file)->d_sb);
 	struct btrfs_device *device;
 	struct request_queue *q;
 	struct fstrim_range range;
 	u64 minlen = ULLONG_MAX;
 	u64 num_devices = 0;
-	u64 total_bytes = btrfs_super_total_bytes(root->fs_info->super_copy);
+	u64 total_bytes = btrfs_super_total_bytes(fs_info->super_copy);
 	int ret;
 
 	if (!capable(CAP_SYS_ADMIN))
@@ -312,7 +321,7 @@
 
 	range.len = min(range.len, total_bytes - range.start);
 	range.minlen = max(range.minlen, minlen);
-	ret = btrfs_trim_fs(root, &range);
+	ret = btrfs_trim_fs(fs_info->tree_root, &range);
 	if (ret < 0)
 		return ret;
 
@@ -358,7 +367,7 @@
 		return PTR_ERR(trans);
 
 	leaf = btrfs_alloc_free_block(trans, root, root->leafsize,
-				      0, objectid, NULL, 0, 0, 0);
+				      0, objectid, NULL, 0, 0, 0, 0);
 	if (IS_ERR(leaf)) {
 		ret = PTR_ERR(leaf);
 		goto fail;
@@ -858,10 +867,8 @@
 		return 0;
 	file_end = (isize - 1) >> PAGE_CACHE_SHIFT;
 
-	mutex_lock(&inode->i_mutex);
 	ret = btrfs_delalloc_reserve_space(inode,
 					   num_pages << PAGE_CACHE_SHIFT);
-	mutex_unlock(&inode->i_mutex);
 	if (ret)
 		return ret;
 again:
@@ -1203,13 +1210,21 @@
 	if (!capable(CAP_SYS_ADMIN))
 		return -EPERM;
 
+	mutex_lock(&root->fs_info->volume_mutex);
+	if (root->fs_info->balance_ctl) {
+		printk(KERN_INFO "btrfs: balance in progress\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
 	vol_args = memdup_user(arg, sizeof(*vol_args));
-	if (IS_ERR(vol_args))
-		return PTR_ERR(vol_args);
+	if (IS_ERR(vol_args)) {
+		ret = PTR_ERR(vol_args);
+		goto out;
+	}
 
 	vol_args->name[BTRFS_PATH_NAME_MAX] = '\0';
 
-	mutex_lock(&root->fs_info->volume_mutex);
 	sizestr = vol_args->name;
 	devstr = strchr(sizestr, ':');
 	if (devstr) {
@@ -1226,7 +1241,7 @@
 		printk(KERN_INFO "btrfs: resizer unable to find device %llu\n",
 		       (unsigned long long)devid);
 		ret = -EINVAL;
-		goto out_unlock;
+		goto out_free;
 	}
 	if (!strcmp(sizestr, "max"))
 		new_size = device->bdev->bd_inode->i_size;
@@ -1241,7 +1256,7 @@
 		new_size = memparse(sizestr, NULL);
 		if (new_size == 0) {
 			ret = -EINVAL;
-			goto out_unlock;
+			goto out_free;
 		}
 	}
 
@@ -1250,7 +1265,7 @@
 	if (mod < 0) {
 		if (new_size > old_size) {
 			ret = -EINVAL;
-			goto out_unlock;
+			goto out_free;
 		}
 		new_size = old_size - new_size;
 	} else if (mod > 0) {
@@ -1259,11 +1274,11 @@
 
 	if (new_size < 256 * 1024 * 1024) {
 		ret = -EINVAL;
-		goto out_unlock;
+		goto out_free;
 	}
 	if (new_size > device->bdev->bd_inode->i_size) {
 		ret = -EFBIG;
-		goto out_unlock;
+		goto out_free;
 	}
 
 	do_div(new_size, root->sectorsize);
@@ -1276,7 +1291,7 @@
 		trans = btrfs_start_transaction(root, 0);
 		if (IS_ERR(trans)) {
 			ret = PTR_ERR(trans);
-			goto out_unlock;
+			goto out_free;
 		}
 		ret = btrfs_grow_device(trans, device, new_size);
 		btrfs_commit_transaction(trans, root);
@@ -1284,9 +1299,10 @@
 		ret = btrfs_shrink_device(device, new_size);
 	}
 
-out_unlock:
-	mutex_unlock(&root->fs_info->volume_mutex);
+out_free:
 	kfree(vol_args);
+out:
+	mutex_unlock(&root->fs_info->volume_mutex);
 	return ret;
 }
 
@@ -2052,14 +2068,25 @@
 	if (!capable(CAP_SYS_ADMIN))
 		return -EPERM;
 
+	mutex_lock(&root->fs_info->volume_mutex);
+	if (root->fs_info->balance_ctl) {
+		printk(KERN_INFO "btrfs: balance in progress\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
 	vol_args = memdup_user(arg, sizeof(*vol_args));
-	if (IS_ERR(vol_args))
-		return PTR_ERR(vol_args);
+	if (IS_ERR(vol_args)) {
+		ret = PTR_ERR(vol_args);
+		goto out;
+	}
 
 	vol_args->name[BTRFS_PATH_NAME_MAX] = '\0';
 	ret = btrfs_init_new_device(root, vol_args->name);
 
 	kfree(vol_args);
+out:
+	mutex_unlock(&root->fs_info->volume_mutex);
 	return ret;
 }
 
@@ -2074,14 +2101,25 @@
 	if (root->fs_info->sb->s_flags & MS_RDONLY)
 		return -EROFS;
 
+	mutex_lock(&root->fs_info->volume_mutex);
+	if (root->fs_info->balance_ctl) {
+		printk(KERN_INFO "btrfs: balance in progress\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
 	vol_args = memdup_user(arg, sizeof(*vol_args));
-	if (IS_ERR(vol_args))
-		return PTR_ERR(vol_args);
+	if (IS_ERR(vol_args)) {
+		ret = PTR_ERR(vol_args);
+		goto out;
+	}
 
 	vol_args->name[BTRFS_PATH_NAME_MAX] = '\0';
 	ret = btrfs_rm_device(root, vol_args->name);
 
 	kfree(vol_args);
+out:
+	mutex_unlock(&root->fs_info->volume_mutex);
 	return ret;
 }
 
@@ -2427,7 +2465,8 @@
 							disko, diskl, 0,
 							root->root_key.objectid,
 							btrfs_ino(inode),
-							new_key.offset - datao);
+							new_key.offset - datao,
+							0);
 					BUG_ON(ret);
 				}
 			} else if (type == BTRFS_FILE_EXTENT_INLINE) {
@@ -2977,7 +3016,7 @@
 {
 	int ret = 0;
 	int size;
-	u64 extent_offset;
+	u64 extent_item_pos;
 	struct btrfs_ioctl_logical_ino_args *loi;
 	struct btrfs_data_container *inodes = NULL;
 	struct btrfs_path *path = NULL;
@@ -3008,15 +3047,17 @@
 	}
 
 	ret = extent_from_logical(root->fs_info, loi->logical, path, &key);
+	btrfs_release_path(path);
 
 	if (ret & BTRFS_EXTENT_FLAG_TREE_BLOCK)
 		ret = -ENOENT;
 	if (ret < 0)
 		goto out;
 
-	extent_offset = loi->logical - key.objectid;
+	extent_item_pos = loi->logical - key.objectid;
 	ret = iterate_extent_inodes(root->fs_info, path, key.objectid,
-					extent_offset, build_ino_list, inodes);
+					extent_item_pos, build_ino_list,
+					inodes);
 
 	if (ret < 0)
 		goto out;
@@ -3034,6 +3075,163 @@
 	return ret;
 }
 
+void update_ioctl_balance_args(struct btrfs_fs_info *fs_info, int lock,
+			       struct btrfs_ioctl_balance_args *bargs)
+{
+	struct btrfs_balance_control *bctl = fs_info->balance_ctl;
+
+	bargs->flags = bctl->flags;
+
+	if (atomic_read(&fs_info->balance_running))
+		bargs->state |= BTRFS_BALANCE_STATE_RUNNING;
+	if (atomic_read(&fs_info->balance_pause_req))
+		bargs->state |= BTRFS_BALANCE_STATE_PAUSE_REQ;
+	if (atomic_read(&fs_info->balance_cancel_req))
+		bargs->state |= BTRFS_BALANCE_STATE_CANCEL_REQ;
+
+	memcpy(&bargs->data, &bctl->data, sizeof(bargs->data));
+	memcpy(&bargs->meta, &bctl->meta, sizeof(bargs->meta));
+	memcpy(&bargs->sys, &bctl->sys, sizeof(bargs->sys));
+
+	if (lock) {
+		spin_lock(&fs_info->balance_lock);
+		memcpy(&bargs->stat, &bctl->stat, sizeof(bargs->stat));
+		spin_unlock(&fs_info->balance_lock);
+	} else {
+		memcpy(&bargs->stat, &bctl->stat, sizeof(bargs->stat));
+	}
+}
+
+static long btrfs_ioctl_balance(struct btrfs_root *root, void __user *arg)
+{
+	struct btrfs_fs_info *fs_info = root->fs_info;
+	struct btrfs_ioctl_balance_args *bargs;
+	struct btrfs_balance_control *bctl;
+	int ret;
+
+	if (!capable(CAP_SYS_ADMIN))
+		return -EPERM;
+
+	if (fs_info->sb->s_flags & MS_RDONLY)
+		return -EROFS;
+
+	mutex_lock(&fs_info->volume_mutex);
+	mutex_lock(&fs_info->balance_mutex);
+
+	if (arg) {
+		bargs = memdup_user(arg, sizeof(*bargs));
+		if (IS_ERR(bargs)) {
+			ret = PTR_ERR(bargs);
+			goto out;
+		}
+
+		if (bargs->flags & BTRFS_BALANCE_RESUME) {
+			if (!fs_info->balance_ctl) {
+				ret = -ENOTCONN;
+				goto out_bargs;
+			}
+
+			bctl = fs_info->balance_ctl;
+			spin_lock(&fs_info->balance_lock);
+			bctl->flags |= BTRFS_BALANCE_RESUME;
+			spin_unlock(&fs_info->balance_lock);
+
+			goto do_balance;
+		}
+	} else {
+		bargs = NULL;
+	}
+
+	if (fs_info->balance_ctl) {
+		ret = -EINPROGRESS;
+		goto out_bargs;
+	}
+
+	bctl = kzalloc(sizeof(*bctl), GFP_NOFS);
+	if (!bctl) {
+		ret = -ENOMEM;
+		goto out_bargs;
+	}
+
+	bctl->fs_info = fs_info;
+	if (arg) {
+		memcpy(&bctl->data, &bargs->data, sizeof(bctl->data));
+		memcpy(&bctl->meta, &bargs->meta, sizeof(bctl->meta));
+		memcpy(&bctl->sys, &bargs->sys, sizeof(bctl->sys));
+
+		bctl->flags = bargs->flags;
+	} else {
+		/* balance everything - no filters */
+		bctl->flags |= BTRFS_BALANCE_TYPE_MASK;
+	}
+
+do_balance:
+	ret = btrfs_balance(bctl, bargs);
+	/*
+	 * bctl is freed in __cancel_balance or in free_fs_info if
+	 * restriper was paused all the way until unmount
+	 */
+	if (arg) {
+		if (copy_to_user(arg, bargs, sizeof(*bargs)))
+			ret = -EFAULT;
+	}
+
+out_bargs:
+	kfree(bargs);
+out:
+	mutex_unlock(&fs_info->balance_mutex);
+	mutex_unlock(&fs_info->volume_mutex);
+	return ret;
+}
+
+static long btrfs_ioctl_balance_ctl(struct btrfs_root *root, int cmd)
+{
+	if (!capable(CAP_SYS_ADMIN))
+		return -EPERM;
+
+	switch (cmd) {
+	case BTRFS_BALANCE_CTL_PAUSE:
+		return btrfs_pause_balance(root->fs_info);
+	case BTRFS_BALANCE_CTL_CANCEL:
+		return btrfs_cancel_balance(root->fs_info);
+	}
+
+	return -EINVAL;
+}
+
+static long btrfs_ioctl_balance_progress(struct btrfs_root *root,
+					 void __user *arg)
+{
+	struct btrfs_fs_info *fs_info = root->fs_info;
+	struct btrfs_ioctl_balance_args *bargs;
+	int ret = 0;
+
+	if (!capable(CAP_SYS_ADMIN))
+		return -EPERM;
+
+	mutex_lock(&fs_info->balance_mutex);
+	if (!fs_info->balance_ctl) {
+		ret = -ENOTCONN;
+		goto out;
+	}
+
+	bargs = kzalloc(sizeof(*bargs), GFP_NOFS);
+	if (!bargs) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	update_ioctl_balance_args(fs_info, 1, bargs);
+
+	if (copy_to_user(arg, bargs, sizeof(*bargs)))
+		ret = -EFAULT;
+
+	kfree(bargs);
+out:
+	mutex_unlock(&fs_info->balance_mutex);
+	return ret;
+}
+
 long btrfs_ioctl(struct file *file, unsigned int
 		cmd, unsigned long arg)
 {
@@ -3078,7 +3276,7 @@
 	case BTRFS_IOC_DEV_INFO:
 		return btrfs_ioctl_dev_info(root, argp);
 	case BTRFS_IOC_BALANCE:
-		return btrfs_balance(root->fs_info->dev_root);
+		return btrfs_ioctl_balance(root, NULL);
 	case BTRFS_IOC_CLONE:
 		return btrfs_ioctl_clone(file, arg, 0, 0, 0);
 	case BTRFS_IOC_CLONE_RANGE:
@@ -3110,6 +3308,12 @@
 		return btrfs_ioctl_scrub_cancel(root, argp);
 	case BTRFS_IOC_SCRUB_PROGRESS:
 		return btrfs_ioctl_scrub_progress(root, argp);
+	case BTRFS_IOC_BALANCE_V2:
+		return btrfs_ioctl_balance(root, argp);
+	case BTRFS_IOC_BALANCE_CTL:
+		return btrfs_ioctl_balance_ctl(root, arg);
+	case BTRFS_IOC_BALANCE_PROGRESS:
+		return btrfs_ioctl_balance_progress(root, argp);
 	}
 
 	return -ENOTTY;
diff --git a/fs/btrfs/ioctl.h b/fs/btrfs/ioctl.h
index 252ae99..4f69028 100644
--- a/fs/btrfs/ioctl.h
+++ b/fs/btrfs/ioctl.h
@@ -109,6 +109,55 @@
 	__u64 reserved[124];			/* pad to 1k */
 };
 
+/* balance control ioctl modes */
+#define BTRFS_BALANCE_CTL_PAUSE		1
+#define BTRFS_BALANCE_CTL_CANCEL	2
+
+/*
+ * this is packed, because it should be exactly the same as its disk
+ * byte order counterpart (struct btrfs_disk_balance_args)
+ */
+struct btrfs_balance_args {
+	__u64 profiles;
+	__u64 usage;
+	__u64 devid;
+	__u64 pstart;
+	__u64 pend;
+	__u64 vstart;
+	__u64 vend;
+
+	__u64 target;
+
+	__u64 flags;
+
+	__u64 unused[8];
+} __attribute__ ((__packed__));
+
+/* report balance progress to userspace */
+struct btrfs_balance_progress {
+	__u64 expected;		/* estimated # of chunks that will be
+				 * relocated to fulfill the request */
+	__u64 considered;	/* # of chunks we have considered so far */
+	__u64 completed;	/* # of chunks relocated so far */
+};
+
+#define BTRFS_BALANCE_STATE_RUNNING	(1ULL << 0)
+#define BTRFS_BALANCE_STATE_PAUSE_REQ	(1ULL << 1)
+#define BTRFS_BALANCE_STATE_CANCEL_REQ	(1ULL << 2)
+
+struct btrfs_ioctl_balance_args {
+	__u64 flags;				/* in/out */
+	__u64 state;				/* out */
+
+	struct btrfs_balance_args data;		/* in/out */
+	struct btrfs_balance_args meta;		/* in/out */
+	struct btrfs_balance_args sys;		/* in/out */
+
+	struct btrfs_balance_progress stat;	/* out */
+
+	__u64 unused[72];			/* pad to 1k */
+};
+
 #define BTRFS_INO_LOOKUP_PATH_MAX 4080
 struct btrfs_ioctl_ino_lookup_args {
 	__u64 treeid;
@@ -272,6 +321,11 @@
 				 struct btrfs_ioctl_dev_info_args)
 #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
 			       struct btrfs_ioctl_fs_info_args)
+#define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \
+				   struct btrfs_ioctl_balance_args)
+#define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int)
+#define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \
+					struct btrfs_ioctl_balance_args)
 #define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \
 					struct btrfs_ioctl_ino_path_args)
 #define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \
diff --git a/fs/btrfs/locking.c b/fs/btrfs/locking.c
index d77b67c..5e178d8 100644
--- a/fs/btrfs/locking.c
+++ b/fs/btrfs/locking.c
@@ -33,6 +33,14 @@
  */
 void btrfs_set_lock_blocking_rw(struct extent_buffer *eb, int rw)
 {
+	if (eb->lock_nested) {
+		read_lock(&eb->lock);
+		if (eb->lock_nested && current->pid == eb->lock_owner) {
+			read_unlock(&eb->lock);
+			return;
+		}
+		read_unlock(&eb->lock);
+	}
 	if (rw == BTRFS_WRITE_LOCK) {
 		if (atomic_read(&eb->blocking_writers) == 0) {
 			WARN_ON(atomic_read(&eb->spinning_writers) != 1);
@@ -57,6 +65,14 @@
  */
 void btrfs_clear_lock_blocking_rw(struct extent_buffer *eb, int rw)
 {
+	if (eb->lock_nested) {
+		read_lock(&eb->lock);
+		if (&eb->lock_nested && current->pid == eb->lock_owner) {
+			read_unlock(&eb->lock);
+			return;
+		}
+		read_unlock(&eb->lock);
+	}
 	if (rw == BTRFS_WRITE_LOCK_BLOCKING) {
 		BUG_ON(atomic_read(&eb->blocking_writers) != 1);
 		write_lock(&eb->lock);
@@ -81,12 +97,25 @@
 void btrfs_tree_read_lock(struct extent_buffer *eb)
 {
 again:
+	read_lock(&eb->lock);
+	if (atomic_read(&eb->blocking_writers) &&
+	    current->pid == eb->lock_owner) {
+		/*
+		 * This extent is already write-locked by our thread. We allow
+		 * an additional read lock to be added because it's for the same
+		 * thread. btrfs_find_all_roots() depends on this as it may be
+		 * called on a partly (write-)locked tree.
+		 */
+		BUG_ON(eb->lock_nested);
+		eb->lock_nested = 1;
+		read_unlock(&eb->lock);
+		return;
+	}
+	read_unlock(&eb->lock);
 	wait_event(eb->write_lock_wq, atomic_read(&eb->blocking_writers) == 0);
 	read_lock(&eb->lock);
 	if (atomic_read(&eb->blocking_writers)) {
 		read_unlock(&eb->lock);
-		wait_event(eb->write_lock_wq,
-			   atomic_read(&eb->blocking_writers) == 0);
 		goto again;
 	}
 	atomic_inc(&eb->read_locks);
@@ -129,6 +158,7 @@
 	}
 	atomic_inc(&eb->write_locks);
 	atomic_inc(&eb->spinning_writers);
+	eb->lock_owner = current->pid;
 	return 1;
 }
 
@@ -137,6 +167,15 @@
  */
 void btrfs_tree_read_unlock(struct extent_buffer *eb)
 {
+	if (eb->lock_nested) {
+		read_lock(&eb->lock);
+		if (eb->lock_nested && current->pid == eb->lock_owner) {
+			eb->lock_nested = 0;
+			read_unlock(&eb->lock);
+			return;
+		}
+		read_unlock(&eb->lock);
+	}
 	btrfs_assert_tree_read_locked(eb);
 	WARN_ON(atomic_read(&eb->spinning_readers) == 0);
 	atomic_dec(&eb->spinning_readers);
@@ -149,6 +188,15 @@
  */
 void btrfs_tree_read_unlock_blocking(struct extent_buffer *eb)
 {
+	if (eb->lock_nested) {
+		read_lock(&eb->lock);
+		if (eb->lock_nested && current->pid == eb->lock_owner) {
+			eb->lock_nested = 0;
+			read_unlock(&eb->lock);
+			return;
+		}
+		read_unlock(&eb->lock);
+	}
 	btrfs_assert_tree_read_locked(eb);
 	WARN_ON(atomic_read(&eb->blocking_readers) == 0);
 	if (atomic_dec_and_test(&eb->blocking_readers))
@@ -181,6 +229,7 @@
 	WARN_ON(atomic_read(&eb->spinning_writers));
 	atomic_inc(&eb->spinning_writers);
 	atomic_inc(&eb->write_locks);
+	eb->lock_owner = current->pid;
 	return 0;
 }
 
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index cfb5543..8c1aae2 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -1604,12 +1604,12 @@
 		ret = btrfs_inc_extent_ref(trans, root, new_bytenr,
 					   num_bytes, parent,
 					   btrfs_header_owner(leaf),
-					   key.objectid, key.offset);
+					   key.objectid, key.offset, 1);
 		BUG_ON(ret);
 
 		ret = btrfs_free_extent(trans, root, bytenr, num_bytes,
 					parent, btrfs_header_owner(leaf),
-					key.objectid, key.offset);
+					key.objectid, key.offset, 1);
 		BUG_ON(ret);
 	}
 	if (dirty)
@@ -1778,21 +1778,23 @@
 
 		ret = btrfs_inc_extent_ref(trans, src, old_bytenr, blocksize,
 					path->nodes[level]->start,
-					src->root_key.objectid, level - 1, 0);
+					src->root_key.objectid, level - 1, 0,
+					1);
 		BUG_ON(ret);
 		ret = btrfs_inc_extent_ref(trans, dest, new_bytenr, blocksize,
 					0, dest->root_key.objectid, level - 1,
-					0);
+					0, 1);
 		BUG_ON(ret);
 
 		ret = btrfs_free_extent(trans, src, new_bytenr, blocksize,
 					path->nodes[level]->start,
-					src->root_key.objectid, level - 1, 0);
+					src->root_key.objectid, level - 1, 0,
+					1);
 		BUG_ON(ret);
 
 		ret = btrfs_free_extent(trans, dest, old_bytenr, blocksize,
 					0, dest->root_key.objectid, level - 1,
-					0);
+					0, 1);
 		BUG_ON(ret);
 
 		btrfs_unlock_up_safe(path, 0);
@@ -2244,7 +2246,7 @@
 		} else {
 			list_del_init(&reloc_root->root_list);
 		}
-		btrfs_drop_snapshot(reloc_root, rc->block_rsv, 0);
+		btrfs_drop_snapshot(reloc_root, rc->block_rsv, 0, 1);
 	}
 
 	if (found) {
@@ -2558,7 +2560,7 @@
 						node->eb->start, blocksize,
 						upper->eb->start,
 						btrfs_header_owner(upper->eb),
-						node->level, 0);
+						node->level, 0, 1);
 			BUG_ON(ret);
 
 			ret = btrfs_drop_subtree(trans, root, eb, upper->eb);
@@ -2947,9 +2949,7 @@
 	index = (cluster->start - offset) >> PAGE_CACHE_SHIFT;
 	last_index = (cluster->end - offset) >> PAGE_CACHE_SHIFT;
 	while (index <= last_index) {
-		mutex_lock(&inode->i_mutex);
 		ret = btrfs_delalloc_reserve_metadata(inode, PAGE_CACHE_SIZE);
-		mutex_unlock(&inode->i_mutex);
 		if (ret)
 			goto out;
 
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index ddf2c90..9770cc5 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -25,6 +25,7 @@
 #include "transaction.h"
 #include "backref.h"
 #include "extent_io.h"
+#include "check-integrity.h"
 
 /*
  * This is only the first step towards a full-features scrub. It reads all
@@ -309,7 +310,7 @@
 	u8 ref_level;
 	unsigned long ptr = 0;
 	const int bufsize = 4096;
-	u64 extent_offset;
+	u64 extent_item_pos;
 
 	path = btrfs_alloc_path();
 
@@ -329,12 +330,13 @@
 	if (ret < 0)
 		goto out;
 
-	extent_offset = swarn.logical - found_key.objectid;
+	extent_item_pos = swarn.logical - found_key.objectid;
 	swarn.extent_item_size = found_key.offset;
 
 	eb = path->nodes[0];
 	ei = btrfs_item_ptr(eb, path->slots[0], struct btrfs_extent_item);
 	item_size = btrfs_item_size_nr(eb, path->slots[0]);
+	btrfs_release_path(path);
 
 	if (ret & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
 		do {
@@ -351,7 +353,7 @@
 	} else {
 		swarn.path = path;
 		iterate_extent_inodes(fs_info, path, found_key.objectid,
-					extent_offset,
+					extent_item_pos,
 					scrub_print_warning_inode, &swarn);
 	}
 
@@ -732,7 +734,7 @@
 	bio_add_page(bio, page, PAGE_SIZE, 0);
 	bio->bi_end_io = scrub_fixup_end_io;
 	bio->bi_private = &complete;
-	submit_bio(rw, bio);
+	btrfsic_submit_bio(rw, bio);
 
 	/* this will also unplug the queue */
 	wait_for_completion(&complete);
@@ -958,7 +960,7 @@
 	sdev->curr = -1;
 	atomic_inc(&sdev->in_flight);
 
-	submit_bio(READ, sbio->bio);
+	btrfsic_submit_bio(READ, sbio->bio);
 
 	return 0;
 }
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index ae488aa..3ce97b2 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -147,13 +147,13 @@
 
 static void btrfs_put_super(struct super_block *sb)
 {
-	struct btrfs_root *root = btrfs_sb(sb);
-	int ret;
-
-	ret = close_ctree(root);
-	sb->s_fs_info = NULL;
-
-	(void)ret; /* FIXME: need to fix VFS to return error? */
+	(void)close_ctree(btrfs_sb(sb)->tree_root);
+	/* FIXME: need to fix VFS to return error? */
+	/* AV: return it _where_?  ->put_super() can be triggered by any number
+	 * of async events, up to and including delivery of SIGKILL to the
+	 * last process that kept it busy.  Or segfault in the aforementioned
+	 * process...  Whom would you report that to?
+	 */
 }
 
 enum {
@@ -163,8 +163,11 @@
 	Opt_compress_type, Opt_compress_force, Opt_compress_force_type,
 	Opt_notreelog, Opt_ratio, Opt_flushoncommit, Opt_discard,
 	Opt_space_cache, Opt_clear_cache, Opt_user_subvol_rm_allowed,
-	Opt_enospc_debug, Opt_subvolrootid, Opt_defrag,
-	Opt_inode_cache, Opt_no_space_cache, Opt_recovery, Opt_err,
+	Opt_enospc_debug, Opt_subvolrootid, Opt_defrag, Opt_inode_cache,
+	Opt_no_space_cache, Opt_recovery, Opt_skip_balance,
+	Opt_check_integrity, Opt_check_integrity_including_extent_data,
+	Opt_check_integrity_print_mask,
+	Opt_err,
 };
 
 static match_table_t tokens = {
@@ -199,6 +202,10 @@
 	{Opt_inode_cache, "inode_cache"},
 	{Opt_no_space_cache, "nospace_cache"},
 	{Opt_recovery, "recovery"},
+	{Opt_skip_balance, "skip_balance"},
+	{Opt_check_integrity, "check_int"},
+	{Opt_check_integrity_including_extent_data, "check_int_data"},
+	{Opt_check_integrity_print_mask, "check_int_print_mask=%d"},
 	{Opt_err, NULL},
 };
 
@@ -397,6 +404,40 @@
 			printk(KERN_INFO "btrfs: enabling auto recovery");
 			btrfs_set_opt(info->mount_opt, RECOVERY);
 			break;
+		case Opt_skip_balance:
+			btrfs_set_opt(info->mount_opt, SKIP_BALANCE);
+			break;
+#ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY
+		case Opt_check_integrity_including_extent_data:
+			printk(KERN_INFO "btrfs: enabling check integrity"
+			       " including extent data\n");
+			btrfs_set_opt(info->mount_opt,
+				      CHECK_INTEGRITY_INCLUDING_EXTENT_DATA);
+			btrfs_set_opt(info->mount_opt, CHECK_INTEGRITY);
+			break;
+		case Opt_check_integrity:
+			printk(KERN_INFO "btrfs: enabling check integrity\n");
+			btrfs_set_opt(info->mount_opt, CHECK_INTEGRITY);
+			break;
+		case Opt_check_integrity_print_mask:
+			intarg = 0;
+			match_int(&args[0], &intarg);
+			if (intarg) {
+				info->check_integrity_print_mask = intarg;
+				printk(KERN_INFO "btrfs:"
+				       " check_integrity_print_mask 0x%x\n",
+				       info->check_integrity_print_mask);
+			}
+			break;
+#else
+		case Opt_check_integrity_including_extent_data:
+		case Opt_check_integrity:
+		case Opt_check_integrity_print_mask:
+			printk(KERN_ERR "btrfs: support for check_integrity*"
+			       " not compiled in!\n");
+			ret = -EINVAL;
+			goto out;
+#endif
 		case Opt_err:
 			printk(KERN_INFO "btrfs: unrecognized mount option "
 			       "'%s'\n", p);
@@ -500,7 +541,8 @@
 static struct dentry *get_default_root(struct super_block *sb,
 				       u64 subvol_objectid)
 {
-	struct btrfs_root *root = sb->s_fs_info;
+	struct btrfs_fs_info *fs_info = btrfs_sb(sb);
+	struct btrfs_root *root = fs_info->tree_root;
 	struct btrfs_root *new_root;
 	struct btrfs_dir_item *di;
 	struct btrfs_path *path;
@@ -530,7 +572,7 @@
 	 * will mount by default if we haven't been given a specific subvolume
 	 * to mount.
 	 */
-	dir_id = btrfs_super_root_dir(root->fs_info->super_copy);
+	dir_id = btrfs_super_root_dir(fs_info->super_copy);
 	di = btrfs_lookup_dir_item(NULL, root, path, dir_id, "default", 7, 0);
 	if (IS_ERR(di)) {
 		btrfs_free_path(path);
@@ -544,7 +586,7 @@
 		 */
 		btrfs_free_path(path);
 		dir_id = BTRFS_FIRST_FREE_OBJECTID;
-		new_root = root->fs_info->fs_root;
+		new_root = fs_info->fs_root;
 		goto setup_root;
 	}
 
@@ -552,7 +594,7 @@
 	btrfs_free_path(path);
 
 find_root:
-	new_root = btrfs_read_fs_root_no_name(root->fs_info, &location);
+	new_root = btrfs_read_fs_root_no_name(fs_info, &location);
 	if (IS_ERR(new_root))
 		return ERR_CAST(new_root);
 
@@ -588,7 +630,7 @@
 {
 	struct inode *inode;
 	struct dentry *root_dentry;
-	struct btrfs_root *tree_root;
+	struct btrfs_fs_info *fs_info = btrfs_sb(sb);
 	struct btrfs_key key;
 	int err;
 
@@ -603,18 +645,16 @@
 	sb->s_flags |= MS_POSIXACL;
 #endif
 
-	tree_root = open_ctree(sb, fs_devices, (char *)data);
-
-	if (IS_ERR(tree_root)) {
+	err = open_ctree(sb, fs_devices, (char *)data);
+	if (err) {
 		printk("btrfs: open_ctree failed\n");
-		return PTR_ERR(tree_root);
+		return err;
 	}
-	sb->s_fs_info = tree_root;
 
 	key.objectid = BTRFS_FIRST_FREE_OBJECTID;
 	key.type = BTRFS_INODE_ITEM_KEY;
 	key.offset = 0;
-	inode = btrfs_iget(sb, &key, tree_root->fs_info->fs_root, NULL);
+	inode = btrfs_iget(sb, &key, fs_info->fs_root, NULL);
 	if (IS_ERR(inode)) {
 		err = PTR_ERR(inode);
 		goto fail_close;
@@ -631,23 +671,25 @@
 
 	save_mount_options(sb, data);
 	cleancache_init_fs(sb);
+	sb->s_flags |= MS_ACTIVE;
 	return 0;
 
 fail_close:
-	close_ctree(tree_root);
+	close_ctree(fs_info->tree_root);
 	return err;
 }
 
 int btrfs_sync_fs(struct super_block *sb, int wait)
 {
 	struct btrfs_trans_handle *trans;
-	struct btrfs_root *root = btrfs_sb(sb);
+	struct btrfs_fs_info *fs_info = btrfs_sb(sb);
+	struct btrfs_root *root = fs_info->tree_root;
 	int ret;
 
 	trace_btrfs_sync_fs(wait);
 
 	if (!wait) {
-		filemap_flush(root->fs_info->btree_inode->i_mapping);
+		filemap_flush(fs_info->btree_inode->i_mapping);
 		return 0;
 	}
 
@@ -663,8 +705,8 @@
 
 static int btrfs_show_options(struct seq_file *seq, struct dentry *dentry)
 {
-	struct btrfs_root *root = btrfs_sb(dentry->d_sb);
-	struct btrfs_fs_info *info = root->fs_info;
+	struct btrfs_fs_info *info = btrfs_sb(dentry->d_sb);
+	struct btrfs_root *root = info->tree_root;
 	char *compress_type;
 
 	if (btrfs_test_opt(root, DEGRADED))
@@ -722,28 +764,25 @@
 		seq_puts(seq, ",autodefrag");
 	if (btrfs_test_opt(root, INODE_MAP_CACHE))
 		seq_puts(seq, ",inode_cache");
+	if (btrfs_test_opt(root, SKIP_BALANCE))
+		seq_puts(seq, ",skip_balance");
 	return 0;
 }
 
 static int btrfs_test_super(struct super_block *s, void *data)
 {
-	struct btrfs_root *test_root = data;
-	struct btrfs_root *root = btrfs_sb(s);
+	struct btrfs_fs_info *p = data;
+	struct btrfs_fs_info *fs_info = btrfs_sb(s);
 
-	/*
-	 * If this super block is going away, return false as it
-	 * can't match as an existing super block.
-	 */
-	if (!atomic_read(&s->s_active))
-		return 0;
-	return root->fs_info->fs_devices == test_root->fs_info->fs_devices;
+	return fs_info->fs_devices == p->fs_devices;
 }
 
 static int btrfs_set_super(struct super_block *s, void *data)
 {
-	s->s_fs_info = data;
-
-	return set_anon_super(s, data);
+	int err = set_anon_super(s, data);
+	if (!err)
+		s->s_fs_info = data;
+	return err;
 }
 
 /*
@@ -903,12 +942,6 @@
 	if (!fs_info)
 		return ERR_PTR(-ENOMEM);
 
-	fs_info->tree_root = kzalloc(sizeof(struct btrfs_root), GFP_NOFS);
-	if (!fs_info->tree_root) {
-		error = -ENOMEM;
-		goto error_fs_info;
-	}
-	fs_info->tree_root->fs_info = fs_info;
 	fs_info->fs_devices = fs_devices;
 
 	fs_info->super_copy = kzalloc(BTRFS_SUPER_INFO_SIZE, GFP_NOFS);
@@ -928,43 +961,30 @@
 	}
 
 	bdev = fs_devices->latest_bdev;
-	s = sget(fs_type, btrfs_test_super, btrfs_set_super,
-		 fs_info->tree_root);
+	s = sget(fs_type, btrfs_test_super, btrfs_set_super, fs_info);
 	if (IS_ERR(s)) {
 		error = PTR_ERR(s);
 		goto error_close_devices;
 	}
 
 	if (s->s_root) {
-		if ((flags ^ s->s_flags) & MS_RDONLY) {
-			deactivate_locked_super(s);
-			error = -EBUSY;
-			goto error_close_devices;
-		}
-
 		btrfs_close_devices(fs_devices);
 		free_fs_info(fs_info);
+		if ((flags ^ s->s_flags) & MS_RDONLY)
+			error = -EBUSY;
 	} else {
 		char b[BDEVNAME_SIZE];
 
 		s->s_flags = flags | MS_NOSEC;
 		strlcpy(s->s_id, bdevname(bdev, b), sizeof(s->s_id));
-		btrfs_sb(s)->fs_info->bdev_holder = fs_type;
+		btrfs_sb(s)->bdev_holder = fs_type;
 		error = btrfs_fill_super(s, fs_devices, data,
 					 flags & MS_SILENT ? 1 : 0);
-		if (error) {
-			deactivate_locked_super(s);
-			return ERR_PTR(error);
-		}
-
-		s->s_flags |= MS_ACTIVE;
 	}
 
-	root = get_default_root(s, subvol_objectid);
-	if (IS_ERR(root)) {
+	root = !error ? get_default_root(s, subvol_objectid) : ERR_PTR(error);
+	if (IS_ERR(root))
 		deactivate_locked_super(s);
-		return root;
-	}
 
 	return root;
 
@@ -977,7 +997,8 @@
 
 static int btrfs_remount(struct super_block *sb, int *flags, char *data)
 {
-	struct btrfs_root *root = btrfs_sb(sb);
+	struct btrfs_fs_info *fs_info = btrfs_sb(sb);
+	struct btrfs_root *root = fs_info->tree_root;
 	int ret;
 
 	ret = btrfs_parse_options(root, data);
@@ -993,13 +1014,13 @@
 		ret =  btrfs_commit_super(root);
 		WARN_ON(ret);
 	} else {
-		if (root->fs_info->fs_devices->rw_devices == 0)
+		if (fs_info->fs_devices->rw_devices == 0)
 			return -EACCES;
 
-		if (btrfs_super_log_root(root->fs_info->super_copy) != 0)
+		if (btrfs_super_log_root(fs_info->super_copy) != 0)
 			return -EINVAL;
 
-		ret = btrfs_cleanup_fs_roots(root->fs_info);
+		ret = btrfs_cleanup_fs_roots(fs_info);
 		WARN_ON(ret);
 
 		/* recover relocation */
@@ -1168,18 +1189,18 @@
 
 static int btrfs_statfs(struct dentry *dentry, struct kstatfs *buf)
 {
-	struct btrfs_root *root = btrfs_sb(dentry->d_sb);
-	struct btrfs_super_block *disk_super = root->fs_info->super_copy;
-	struct list_head *head = &root->fs_info->space_info;
+	struct btrfs_fs_info *fs_info = btrfs_sb(dentry->d_sb);
+	struct btrfs_super_block *disk_super = fs_info->super_copy;
+	struct list_head *head = &fs_info->space_info;
 	struct btrfs_space_info *found;
 	u64 total_used = 0;
 	u64 total_free_data = 0;
 	int bits = dentry->d_sb->s_blocksize_bits;
-	__be32 *fsid = (__be32 *)root->fs_info->fsid;
+	__be32 *fsid = (__be32 *)fs_info->fsid;
 	int ret;
 
 	/* holding chunk_muext to avoid allocating new chunks */
-	mutex_lock(&root->fs_info->chunk_mutex);
+	mutex_lock(&fs_info->chunk_mutex);
 	rcu_read_lock();
 	list_for_each_entry_rcu(found, head, list) {
 		if (found->flags & BTRFS_BLOCK_GROUP_DATA) {
@@ -1198,14 +1219,14 @@
 	buf->f_bsize = dentry->d_sb->s_blocksize;
 	buf->f_type = BTRFS_SUPER_MAGIC;
 	buf->f_bavail = total_free_data;
-	ret = btrfs_calc_avail_data_space(root, &total_free_data);
+	ret = btrfs_calc_avail_data_space(fs_info->tree_root, &total_free_data);
 	if (ret) {
-		mutex_unlock(&root->fs_info->chunk_mutex);
+		mutex_unlock(&fs_info->chunk_mutex);
 		return ret;
 	}
 	buf->f_bavail += total_free_data;
 	buf->f_bavail = buf->f_bavail >> bits;
-	mutex_unlock(&root->fs_info->chunk_mutex);
+	mutex_unlock(&fs_info->chunk_mutex);
 
 	/* We treat it as constant endianness (it doesn't matter _which_)
 	   because we want the fsid to come out the same whether mounted
@@ -1219,11 +1240,18 @@
 	return 0;
 }
 
+static void btrfs_kill_super(struct super_block *sb)
+{
+	struct btrfs_fs_info *fs_info = btrfs_sb(sb);
+	kill_anon_super(sb);
+	free_fs_info(fs_info);
+}
+
 static struct file_system_type btrfs_fs_type = {
 	.owner		= THIS_MODULE,
 	.name		= "btrfs",
 	.mount		= btrfs_mount,
-	.kill_sb	= kill_anon_super,
+	.kill_sb	= btrfs_kill_super,
 	.fs_flags	= FS_REQUIRES_DEV,
 };
 
@@ -1257,17 +1285,17 @@
 
 static int btrfs_freeze(struct super_block *sb)
 {
-	struct btrfs_root *root = btrfs_sb(sb);
-	mutex_lock(&root->fs_info->transaction_kthread_mutex);
-	mutex_lock(&root->fs_info->cleaner_mutex);
+	struct btrfs_fs_info *fs_info = btrfs_sb(sb);
+	mutex_lock(&fs_info->transaction_kthread_mutex);
+	mutex_lock(&fs_info->cleaner_mutex);
 	return 0;
 }
 
 static int btrfs_unfreeze(struct super_block *sb)
 {
-	struct btrfs_root *root = btrfs_sb(sb);
-	mutex_unlock(&root->fs_info->cleaner_mutex);
-	mutex_unlock(&root->fs_info->transaction_kthread_mutex);
+	struct btrfs_fs_info *fs_info = btrfs_sb(sb);
+	mutex_unlock(&fs_info->cleaner_mutex);
+	mutex_unlock(&fs_info->transaction_kthread_mutex);
 	return 0;
 }
 
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 81376d9..287a672 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -36,6 +36,8 @@
 	WARN_ON(atomic_read(&transaction->use_count) == 0);
 	if (atomic_dec_and_test(&transaction->use_count)) {
 		BUG_ON(!list_empty(&transaction->list));
+		WARN_ON(transaction->delayed_refs.root.rb_node);
+		WARN_ON(!list_empty(&transaction->delayed_refs.seq_head));
 		memset(transaction, 0, sizeof(*transaction));
 		kmem_cache_free(btrfs_transaction_cachep, transaction);
 	}
@@ -108,8 +110,11 @@
 	cur_trans->delayed_refs.num_heads = 0;
 	cur_trans->delayed_refs.flushing = 0;
 	cur_trans->delayed_refs.run_delayed_start = 0;
+	cur_trans->delayed_refs.seq = 1;
+	init_waitqueue_head(&cur_trans->delayed_refs.seq_wait);
 	spin_lock_init(&cur_trans->commit_lock);
 	spin_lock_init(&cur_trans->delayed_refs.lock);
+	INIT_LIST_HEAD(&cur_trans->delayed_refs.seq_head);
 
 	INIT_LIST_HEAD(&cur_trans->pending_snapshots);
 	list_add_tail(&cur_trans->list, &root->fs_info->trans_list);
@@ -321,6 +326,8 @@
 	}
 
 	if (num_bytes) {
+		trace_btrfs_space_reservation(root->fs_info, "transaction",
+					      (u64)h, num_bytes, 1);
 		h->block_rsv = &root->fs_info->trans_block_rsv;
 		h->bytes_reserved = num_bytes;
 	}
@@ -467,19 +474,12 @@
 
 	btrfs_trans_release_metadata(trans, root);
 	trans->block_rsv = NULL;
-	while (count < 4) {
+	while (count < 2) {
 		unsigned long cur = trans->delayed_ref_updates;
 		trans->delayed_ref_updates = 0;
 		if (cur &&
 		    trans->transaction->delayed_refs.num_heads_ready > 64) {
 			trans->delayed_ref_updates = 0;
-
-			/*
-			 * do a full flush if the transaction is trying
-			 * to close
-			 */
-			if (trans->transaction->delayed_refs.flushing)
-				cur = 0;
 			btrfs_run_delayed_refs(trans, root, cur);
 		} else {
 			break;
@@ -1393,9 +1393,9 @@
 
 		if (btrfs_header_backref_rev(root->node) <
 		    BTRFS_MIXED_BACKREF_REV)
-			btrfs_drop_snapshot(root, NULL, 0);
+			btrfs_drop_snapshot(root, NULL, 0, 0);
 		else
-			btrfs_drop_snapshot(root, NULL, 1);
+			btrfs_drop_snapshot(root, NULL, 1, 0);
 	}
 	return 0;
 }
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 3568374..cb877e0 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -589,7 +589,7 @@
 				ret = btrfs_inc_extent_ref(trans, root,
 						ins.objectid, ins.offset,
 						0, root->root_key.objectid,
-						key->objectid, offset);
+						key->objectid, offset, 0);
 				BUG_ON(ret);
 			} else {
 				/*
diff --git a/fs/btrfs/ulist.c b/fs/btrfs/ulist.c
new file mode 100644
index 0000000..12f5147
--- /dev/null
+++ b/fs/btrfs/ulist.c
@@ -0,0 +1,220 @@
+/*
+ * Copyright (C) 2011 STRATO AG
+ * written by Arne Jansen <sensille@gmx.net>
+ * Distributed under the GNU GPL license version 2.
+ */
+
+#include <linux/slab.h>
+#include <linux/module.h>
+#include "ulist.h"
+
+/*
+ * ulist is a generic data structure to hold a collection of unique u64
+ * values. The only operations it supports is adding to the list and
+ * enumerating it.
+ * It is possible to store an auxiliary value along with the key.
+ *
+ * The implementation is preliminary and can probably be sped up
+ * significantly. A first step would be to store the values in an rbtree
+ * as soon as ULIST_SIZE is exceeded.
+ *
+ * A sample usage for ulists is the enumeration of directed graphs without
+ * visiting a node twice. The pseudo-code could look like this:
+ *
+ * ulist = ulist_alloc();
+ * ulist_add(ulist, root);
+ * elem = NULL;
+ *
+ * while ((elem = ulist_next(ulist, elem)) {
+ * 	for (all child nodes n in elem)
+ *		ulist_add(ulist, n);
+ *	do something useful with the node;
+ * }
+ * ulist_free(ulist);
+ *
+ * This assumes the graph nodes are adressable by u64. This stems from the
+ * usage for tree enumeration in btrfs, where the logical addresses are
+ * 64 bit.
+ *
+ * It is also useful for tree enumeration which could be done elegantly
+ * recursively, but is not possible due to kernel stack limitations. The
+ * loop would be similar to the above.
+ */
+
+/**
+ * ulist_init - freshly initialize a ulist
+ * @ulist:	the ulist to initialize
+ *
+ * Note: don't use this function to init an already used ulist, use
+ * ulist_reinit instead.
+ */
+void ulist_init(struct ulist *ulist)
+{
+	ulist->nnodes = 0;
+	ulist->nodes = ulist->int_nodes;
+	ulist->nodes_alloced = ULIST_SIZE;
+}
+EXPORT_SYMBOL(ulist_init);
+
+/**
+ * ulist_fini - free up additionally allocated memory for the ulist
+ * @ulist:	the ulist from which to free the additional memory
+ *
+ * This is useful in cases where the base 'struct ulist' has been statically
+ * allocated.
+ */
+void ulist_fini(struct ulist *ulist)
+{
+	/*
+	 * The first ULIST_SIZE elements are stored inline in struct ulist.
+	 * Only if more elements are alocated they need to be freed.
+	 */
+	if (ulist->nodes_alloced > ULIST_SIZE)
+		kfree(ulist->nodes);
+	ulist->nodes_alloced = 0;	/* in case ulist_fini is called twice */
+}
+EXPORT_SYMBOL(ulist_fini);
+
+/**
+ * ulist_reinit - prepare a ulist for reuse
+ * @ulist:	ulist to be reused
+ *
+ * Free up all additional memory allocated for the list elements and reinit
+ * the ulist.
+ */
+void ulist_reinit(struct ulist *ulist)
+{
+	ulist_fini(ulist);
+	ulist_init(ulist);
+}
+EXPORT_SYMBOL(ulist_reinit);
+
+/**
+ * ulist_alloc - dynamically allocate a ulist
+ * @gfp_mask:	allocation flags to for base allocation
+ *
+ * The allocated ulist will be returned in an initialized state.
+ */
+struct ulist *ulist_alloc(unsigned long gfp_mask)
+{
+	struct ulist *ulist = kmalloc(sizeof(*ulist), gfp_mask);
+
+	if (!ulist)
+		return NULL;
+
+	ulist_init(ulist);
+
+	return ulist;
+}
+EXPORT_SYMBOL(ulist_alloc);
+
+/**
+ * ulist_free - free dynamically allocated ulist
+ * @ulist:	ulist to free
+ *
+ * It is not necessary to call ulist_fini before.
+ */
+void ulist_free(struct ulist *ulist)
+{
+	if (!ulist)
+		return;
+	ulist_fini(ulist);
+	kfree(ulist);
+}
+EXPORT_SYMBOL(ulist_free);
+
+/**
+ * ulist_add - add an element to the ulist
+ * @ulist:	ulist to add the element to
+ * @val:	value to add to ulist
+ * @aux:	auxiliary value to store along with val
+ * @gfp_mask:	flags to use for allocation
+ *
+ * Note: locking must be provided by the caller. In case of rwlocks write
+ *       locking is needed
+ *
+ * Add an element to a ulist. The @val will only be added if it doesn't
+ * already exist. If it is added, the auxiliary value @aux is stored along with
+ * it. In case @val already exists in the ulist, @aux is ignored, even if
+ * it differs from the already stored value.
+ *
+ * ulist_add returns 0 if @val already exists in ulist and 1 if @val has been
+ * inserted.
+ * In case of allocation failure -ENOMEM is returned and the ulist stays
+ * unaltered.
+ */
+int ulist_add(struct ulist *ulist, u64 val, unsigned long aux,
+	      unsigned long gfp_mask)
+{
+	int i;
+
+	for (i = 0; i < ulist->nnodes; ++i) {
+		if (ulist->nodes[i].val == val)
+			return 0;
+	}
+
+	if (ulist->nnodes >= ulist->nodes_alloced) {
+		u64 new_alloced = ulist->nodes_alloced + 128;
+		struct ulist_node *new_nodes;
+		void *old = NULL;
+
+		/*
+		 * if nodes_alloced == ULIST_SIZE no memory has been allocated
+		 * yet, so pass NULL to krealloc
+		 */
+		if (ulist->nodes_alloced > ULIST_SIZE)
+			old = ulist->nodes;
+
+		new_nodes = krealloc(old, sizeof(*new_nodes) * new_alloced,
+				     gfp_mask);
+		if (!new_nodes)
+			return -ENOMEM;
+
+		if (!old)
+			memcpy(new_nodes, ulist->int_nodes,
+			       sizeof(ulist->int_nodes));
+
+		ulist->nodes = new_nodes;
+		ulist->nodes_alloced = new_alloced;
+	}
+	ulist->nodes[ulist->nnodes].val = val;
+	ulist->nodes[ulist->nnodes].aux = aux;
+	++ulist->nnodes;
+
+	return 1;
+}
+EXPORT_SYMBOL(ulist_add);
+
+/**
+ * ulist_next - iterate ulist
+ * @ulist:	ulist to iterate
+ * @prev:	previously returned element or %NULL to start iteration
+ *
+ * Note: locking must be provided by the caller. In case of rwlocks only read
+ *       locking is needed
+ *
+ * This function is used to iterate an ulist. The iteration is started with
+ * @prev = %NULL. It returns the next element from the ulist or %NULL when the
+ * end is reached. No guarantee is made with respect to the order in which
+ * the elements are returned. They might neither be returned in order of
+ * addition nor in ascending order.
+ * It is allowed to call ulist_add during an enumeration. Newly added items
+ * are guaranteed to show up in the running enumeration.
+ */
+struct ulist_node *ulist_next(struct ulist *ulist, struct ulist_node *prev)
+{
+	int next;
+
+	if (ulist->nnodes == 0)
+		return NULL;
+
+	if (!prev)
+		return &ulist->nodes[0];
+
+	next = (prev - ulist->nodes) + 1;
+	if (next < 0 || next >= ulist->nnodes)
+		return NULL;
+
+	return &ulist->nodes[next];
+}
+EXPORT_SYMBOL(ulist_next);
diff --git a/fs/btrfs/ulist.h b/fs/btrfs/ulist.h
new file mode 100644
index 0000000..2e25dec
--- /dev/null
+++ b/fs/btrfs/ulist.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2011 STRATO AG
+ * written by Arne Jansen <sensille@gmx.net>
+ * Distributed under the GNU GPL license version 2.
+ *
+ */
+
+#ifndef __ULIST__
+#define __ULIST__
+
+/*
+ * ulist is a generic data structure to hold a collection of unique u64
+ * values. The only operations it supports is adding to the list and
+ * enumerating it.
+ * It is possible to store an auxiliary value along with the key.
+ *
+ * The implementation is preliminary and can probably be sped up
+ * significantly. A first step would be to store the values in an rbtree
+ * as soon as ULIST_SIZE is exceeded.
+ */
+
+/*
+ * number of elements statically allocated inside struct ulist
+ */
+#define ULIST_SIZE 16
+
+/*
+ * element of the list
+ */
+struct ulist_node {
+	u64 val;		/* value to store */
+	unsigned long aux;	/* auxiliary value saved along with the val */
+};
+
+struct ulist {
+	/*
+	 * number of elements stored in list
+	 */
+	unsigned long nnodes;
+
+	/*
+	 * number of nodes we already have room for
+	 */
+	unsigned long nodes_alloced;
+
+	/*
+	 * pointer to the array storing the elements. The first ULIST_SIZE
+	 * elements are stored inline. In this case the it points to int_nodes.
+	 * After exceeding ULIST_SIZE, dynamic memory is allocated.
+	 */
+	struct ulist_node *nodes;
+
+	/*
+	 * inline storage space for the first ULIST_SIZE entries
+	 */
+	struct ulist_node int_nodes[ULIST_SIZE];
+};
+
+void ulist_init(struct ulist *ulist);
+void ulist_fini(struct ulist *ulist);
+void ulist_reinit(struct ulist *ulist);
+struct ulist *ulist_alloc(unsigned long gfp_mask);
+void ulist_free(struct ulist *ulist);
+int ulist_add(struct ulist *ulist, u64 val, unsigned long aux,
+	      unsigned long gfp_mask);
+struct ulist_node *ulist_next(struct ulist *ulist, struct ulist_node *prev);
+
+#endif
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index f4b839f..0b4e2af 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -23,6 +23,7 @@
 #include <linux/random.h>
 #include <linux/iocontext.h>
 #include <linux/capability.h>
+#include <linux/kthread.h>
 #include <asm/div64.h>
 #include "compat.h"
 #include "ctree.h"
@@ -32,6 +33,7 @@
 #include "print-tree.h"
 #include "volumes.h"
 #include "async-thread.h"
+#include "check-integrity.h"
 
 static int init_first_rw_device(struct btrfs_trans_handle *trans,
 				struct btrfs_root *root,
@@ -246,7 +248,7 @@
 			sync_pending = 0;
 		}
 
-		submit_bio(cur->bi_rw, cur);
+		btrfsic_submit_bio(cur->bi_rw, cur);
 		num_run++;
 		batch_run++;
 		if (need_resched())
@@ -706,8 +708,6 @@
 	u64 devid;
 	u64 transid;
 
-	mutex_lock(&uuid_mutex);
-
 	flags |= FMODE_EXCL;
 	bdev = blkdev_get_by_path(path, flags, holder);
 
@@ -716,6 +716,7 @@
 		goto error;
 	}
 
+	mutex_lock(&uuid_mutex);
 	ret = set_blocksize(bdev, 4096);
 	if (ret)
 		goto error_close;
@@ -737,9 +738,9 @@
 
 	brelse(bh);
 error_close:
+	mutex_unlock(&uuid_mutex);
 	blkdev_put(bdev, flags);
 error:
-	mutex_unlock(&uuid_mutex);
 	return ret;
 }
 
@@ -829,7 +830,6 @@
 
 /*
  * find_free_dev_extent - find free space in the specified device
- * @trans:	transaction handler
  * @device:	the device which we search the free space in
  * @num_bytes:	the size of the free space that we need
  * @start:	store the start of the free space.
@@ -848,8 +848,7 @@
  * But if we don't find suitable free space, it is used to store the size of
  * the max free space.
  */
-int find_free_dev_extent(struct btrfs_trans_handle *trans,
-			 struct btrfs_device *device, u64 num_bytes,
+int find_free_dev_extent(struct btrfs_device *device, u64 num_bytes,
 			 u64 *start, u64 *len)
 {
 	struct btrfs_key key;
@@ -893,7 +892,7 @@
 	key.offset = search_start;
 	key.type = BTRFS_DEV_EXTENT_KEY;
 
-	ret = btrfs_search_slot(trans, root, &key, path, 0, 0);
+	ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
 	if (ret < 0)
 		goto out;
 	if (ret > 0) {
@@ -1282,7 +1281,6 @@
 	bool clear_super = false;
 
 	mutex_lock(&uuid_mutex);
-	mutex_lock(&root->fs_info->volume_mutex);
 
 	all_avail = root->fs_info->avail_data_alloc_bits |
 		root->fs_info->avail_system_alloc_bits |
@@ -1452,7 +1450,6 @@
 	if (bdev)
 		blkdev_put(bdev, FMODE_READ | FMODE_EXCL);
 out:
-	mutex_unlock(&root->fs_info->volume_mutex);
 	mutex_unlock(&uuid_mutex);
 	return ret;
 error_undo:
@@ -1469,8 +1466,7 @@
 /*
  * does all the dirty work required for changing file system's UUID.
  */
-static int btrfs_prepare_sprout(struct btrfs_trans_handle *trans,
-				struct btrfs_root *root)
+static int btrfs_prepare_sprout(struct btrfs_root *root)
 {
 	struct btrfs_fs_devices *fs_devices = root->fs_info->fs_devices;
 	struct btrfs_fs_devices *old_devices;
@@ -1629,7 +1625,6 @@
 	}
 
 	filemap_write_and_wait(bdev->bd_inode->i_mapping);
-	mutex_lock(&root->fs_info->volume_mutex);
 
 	devices = &root->fs_info->fs_devices->devices;
 	/*
@@ -1695,7 +1690,7 @@
 
 	if (seeding_dev) {
 		sb->s_flags &= ~MS_RDONLY;
-		ret = btrfs_prepare_sprout(trans, root);
+		ret = btrfs_prepare_sprout(root);
 		BUG_ON(ret);
 	}
 
@@ -1757,8 +1752,7 @@
 		ret = btrfs_relocate_sys_chunks(root);
 		BUG_ON(ret);
 	}
-out:
-	mutex_unlock(&root->fs_info->volume_mutex);
+
 	return ret;
 error:
 	blkdev_put(bdev, FMODE_EXCL);
@@ -1766,7 +1760,7 @@
 		mutex_unlock(&uuid_mutex);
 		up_write(&sb->s_umount);
 	}
-	goto out;
+	return ret;
 }
 
 static noinline int btrfs_update_device(struct btrfs_trans_handle *trans,
@@ -2077,6 +2071,362 @@
 	return ret;
 }
 
+static int insert_balance_item(struct btrfs_root *root,
+			       struct btrfs_balance_control *bctl)
+{
+	struct btrfs_trans_handle *trans;
+	struct btrfs_balance_item *item;
+	struct btrfs_disk_balance_args disk_bargs;
+	struct btrfs_path *path;
+	struct extent_buffer *leaf;
+	struct btrfs_key key;
+	int ret, err;
+
+	path = btrfs_alloc_path();
+	if (!path)
+		return -ENOMEM;
+
+	trans = btrfs_start_transaction(root, 0);
+	if (IS_ERR(trans)) {
+		btrfs_free_path(path);
+		return PTR_ERR(trans);
+	}
+
+	key.objectid = BTRFS_BALANCE_OBJECTID;
+	key.type = BTRFS_BALANCE_ITEM_KEY;
+	key.offset = 0;
+
+	ret = btrfs_insert_empty_item(trans, root, path, &key,
+				      sizeof(*item));
+	if (ret)
+		goto out;
+
+	leaf = path->nodes[0];
+	item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_balance_item);
+
+	memset_extent_buffer(leaf, 0, (unsigned long)item, sizeof(*item));
+
+	btrfs_cpu_balance_args_to_disk(&disk_bargs, &bctl->data);
+	btrfs_set_balance_data(leaf, item, &disk_bargs);
+	btrfs_cpu_balance_args_to_disk(&disk_bargs, &bctl->meta);
+	btrfs_set_balance_meta(leaf, item, &disk_bargs);
+	btrfs_cpu_balance_args_to_disk(&disk_bargs, &bctl->sys);
+	btrfs_set_balance_sys(leaf, item, &disk_bargs);
+
+	btrfs_set_balance_flags(leaf, item, bctl->flags);
+
+	btrfs_mark_buffer_dirty(leaf);
+out:
+	btrfs_free_path(path);
+	err = btrfs_commit_transaction(trans, root);
+	if (err && !ret)
+		ret = err;
+	return ret;
+}
+
+static int del_balance_item(struct btrfs_root *root)
+{
+	struct btrfs_trans_handle *trans;
+	struct btrfs_path *path;
+	struct btrfs_key key;
+	int ret, err;
+
+	path = btrfs_alloc_path();
+	if (!path)
+		return -ENOMEM;
+
+	trans = btrfs_start_transaction(root, 0);
+	if (IS_ERR(trans)) {
+		btrfs_free_path(path);
+		return PTR_ERR(trans);
+	}
+
+	key.objectid = BTRFS_BALANCE_OBJECTID;
+	key.type = BTRFS_BALANCE_ITEM_KEY;
+	key.offset = 0;
+
+	ret = btrfs_search_slot(trans, root, &key, path, -1, 1);
+	if (ret < 0)
+		goto out;
+	if (ret > 0) {
+		ret = -ENOENT;
+		goto out;
+	}
+
+	ret = btrfs_del_item(trans, root, path);
+out:
+	btrfs_free_path(path);
+	err = btrfs_commit_transaction(trans, root);
+	if (err && !ret)
+		ret = err;
+	return ret;
+}
+
+/*
+ * This is a heuristic used to reduce the number of chunks balanced on
+ * resume after balance was interrupted.
+ */
+static void update_balance_args(struct btrfs_balance_control *bctl)
+{
+	/*
+	 * Turn on soft mode for chunk types that were being converted.
+	 */
+	if (bctl->data.flags & BTRFS_BALANCE_ARGS_CONVERT)
+		bctl->data.flags |= BTRFS_BALANCE_ARGS_SOFT;
+	if (bctl->sys.flags & BTRFS_BALANCE_ARGS_CONVERT)
+		bctl->sys.flags |= BTRFS_BALANCE_ARGS_SOFT;
+	if (bctl->meta.flags & BTRFS_BALANCE_ARGS_CONVERT)
+		bctl->meta.flags |= BTRFS_BALANCE_ARGS_SOFT;
+
+	/*
+	 * Turn on usage filter if is not already used.  The idea is
+	 * that chunks that we have already balanced should be
+	 * reasonably full.  Don't do it for chunks that are being
+	 * converted - that will keep us from relocating unconverted
+	 * (albeit full) chunks.
+	 */
+	if (!(bctl->data.flags & BTRFS_BALANCE_ARGS_USAGE) &&
+	    !(bctl->data.flags & BTRFS_BALANCE_ARGS_CONVERT)) {
+		bctl->data.flags |= BTRFS_BALANCE_ARGS_USAGE;
+		bctl->data.usage = 90;
+	}
+	if (!(bctl->sys.flags & BTRFS_BALANCE_ARGS_USAGE) &&
+	    !(bctl->sys.flags & BTRFS_BALANCE_ARGS_CONVERT)) {
+		bctl->sys.flags |= BTRFS_BALANCE_ARGS_USAGE;
+		bctl->sys.usage = 90;
+	}
+	if (!(bctl->meta.flags & BTRFS_BALANCE_ARGS_USAGE) &&
+	    !(bctl->meta.flags & BTRFS_BALANCE_ARGS_CONVERT)) {
+		bctl->meta.flags |= BTRFS_BALANCE_ARGS_USAGE;
+		bctl->meta.usage = 90;
+	}
+}
+
+/*
+ * Should be called with both balance and volume mutexes held to
+ * serialize other volume operations (add_dev/rm_dev/resize) with
+ * restriper.  Same goes for unset_balance_control.
+ */
+static void set_balance_control(struct btrfs_balance_control *bctl)
+{
+	struct btrfs_fs_info *fs_info = bctl->fs_info;
+
+	BUG_ON(fs_info->balance_ctl);
+
+	spin_lock(&fs_info->balance_lock);
+	fs_info->balance_ctl = bctl;
+	spin_unlock(&fs_info->balance_lock);
+}
+
+static void unset_balance_control(struct btrfs_fs_info *fs_info)
+{
+	struct btrfs_balance_control *bctl = fs_info->balance_ctl;
+
+	BUG_ON(!fs_info->balance_ctl);
+
+	spin_lock(&fs_info->balance_lock);
+	fs_info->balance_ctl = NULL;
+	spin_unlock(&fs_info->balance_lock);
+
+	kfree(bctl);
+}
+
+/*
+ * Balance filters.  Return 1 if chunk should be filtered out
+ * (should not be balanced).
+ */
+static int chunk_profiles_filter(u64 chunk_profile,
+				 struct btrfs_balance_args *bargs)
+{
+	chunk_profile &= BTRFS_BLOCK_GROUP_PROFILE_MASK;
+
+	if (chunk_profile == 0)
+		chunk_profile = BTRFS_AVAIL_ALLOC_BIT_SINGLE;
+
+	if (bargs->profiles & chunk_profile)
+		return 0;
+
+	return 1;
+}
+
+static u64 div_factor_fine(u64 num, int factor)
+{
+	if (factor <= 0)
+		return 0;
+	if (factor >= 100)
+		return num;
+
+	num *= factor;
+	do_div(num, 100);
+	return num;
+}
+
+static int chunk_usage_filter(struct btrfs_fs_info *fs_info, u64 chunk_offset,
+			      struct btrfs_balance_args *bargs)
+{
+	struct btrfs_block_group_cache *cache;
+	u64 chunk_used, user_thresh;
+	int ret = 1;
+
+	cache = btrfs_lookup_block_group(fs_info, chunk_offset);
+	chunk_used = btrfs_block_group_used(&cache->item);
+
+	user_thresh = div_factor_fine(cache->key.offset, bargs->usage);
+	if (chunk_used < user_thresh)
+		ret = 0;
+
+	btrfs_put_block_group(cache);
+	return ret;
+}
+
+static int chunk_devid_filter(struct extent_buffer *leaf,
+			      struct btrfs_chunk *chunk,
+			      struct btrfs_balance_args *bargs)
+{
+	struct btrfs_stripe *stripe;
+	int num_stripes = btrfs_chunk_num_stripes(leaf, chunk);
+	int i;
+
+	for (i = 0; i < num_stripes; i++) {
+		stripe = btrfs_stripe_nr(chunk, i);
+		if (btrfs_stripe_devid(leaf, stripe) == bargs->devid)
+			return 0;
+	}
+
+	return 1;
+}
+
+/* [pstart, pend) */
+static int chunk_drange_filter(struct extent_buffer *leaf,
+			       struct btrfs_chunk *chunk,
+			       u64 chunk_offset,
+			       struct btrfs_balance_args *bargs)
+{
+	struct btrfs_stripe *stripe;
+	int num_stripes = btrfs_chunk_num_stripes(leaf, chunk);
+	u64 stripe_offset;
+	u64 stripe_length;
+	int factor;
+	int i;
+
+	if (!(bargs->flags & BTRFS_BALANCE_ARGS_DEVID))
+		return 0;
+
+	if (btrfs_chunk_type(leaf, chunk) & (BTRFS_BLOCK_GROUP_DUP |
+	     BTRFS_BLOCK_GROUP_RAID1 | BTRFS_BLOCK_GROUP_RAID10))
+		factor = 2;
+	else
+		factor = 1;
+	factor = num_stripes / factor;
+
+	for (i = 0; i < num_stripes; i++) {
+		stripe = btrfs_stripe_nr(chunk, i);
+		if (btrfs_stripe_devid(leaf, stripe) != bargs->devid)
+			continue;
+
+		stripe_offset = btrfs_stripe_offset(leaf, stripe);
+		stripe_length = btrfs_chunk_length(leaf, chunk);
+		do_div(stripe_length, factor);
+
+		if (stripe_offset < bargs->pend &&
+		    stripe_offset + stripe_length > bargs->pstart)
+			return 0;
+	}
+
+	return 1;
+}
+
+/* [vstart, vend) */
+static int chunk_vrange_filter(struct extent_buffer *leaf,
+			       struct btrfs_chunk *chunk,
+			       u64 chunk_offset,
+			       struct btrfs_balance_args *bargs)
+{
+	if (chunk_offset < bargs->vend &&
+	    chunk_offset + btrfs_chunk_length(leaf, chunk) > bargs->vstart)
+		/* at least part of the chunk is inside this vrange */
+		return 0;
+
+	return 1;
+}
+
+static int chunk_soft_convert_filter(u64 chunk_profile,
+				     struct btrfs_balance_args *bargs)
+{
+	if (!(bargs->flags & BTRFS_BALANCE_ARGS_CONVERT))
+		return 0;
+
+	chunk_profile &= BTRFS_BLOCK_GROUP_PROFILE_MASK;
+
+	if (chunk_profile == 0)
+		chunk_profile = BTRFS_AVAIL_ALLOC_BIT_SINGLE;
+
+	if (bargs->target & chunk_profile)
+		return 1;
+
+	return 0;
+}
+
+static int should_balance_chunk(struct btrfs_root *root,
+				struct extent_buffer *leaf,
+				struct btrfs_chunk *chunk, u64 chunk_offset)
+{
+	struct btrfs_balance_control *bctl = root->fs_info->balance_ctl;
+	struct btrfs_balance_args *bargs = NULL;
+	u64 chunk_type = btrfs_chunk_type(leaf, chunk);
+
+	/* type filter */
+	if (!((chunk_type & BTRFS_BLOCK_GROUP_TYPE_MASK) &
+	      (bctl->flags & BTRFS_BALANCE_TYPE_MASK))) {
+		return 0;
+	}
+
+	if (chunk_type & BTRFS_BLOCK_GROUP_DATA)
+		bargs = &bctl->data;
+	else if (chunk_type & BTRFS_BLOCK_GROUP_SYSTEM)
+		bargs = &bctl->sys;
+	else if (chunk_type & BTRFS_BLOCK_GROUP_METADATA)
+		bargs = &bctl->meta;
+
+	/* profiles filter */
+	if ((bargs->flags & BTRFS_BALANCE_ARGS_PROFILES) &&
+	    chunk_profiles_filter(chunk_type, bargs)) {
+		return 0;
+	}
+
+	/* usage filter */
+	if ((bargs->flags & BTRFS_BALANCE_ARGS_USAGE) &&
+	    chunk_usage_filter(bctl->fs_info, chunk_offset, bargs)) {
+		return 0;
+	}
+
+	/* devid filter */
+	if ((bargs->flags & BTRFS_BALANCE_ARGS_DEVID) &&
+	    chunk_devid_filter(leaf, chunk, bargs)) {
+		return 0;
+	}
+
+	/* drange filter, makes sense only with devid filter */
+	if ((bargs->flags & BTRFS_BALANCE_ARGS_DRANGE) &&
+	    chunk_drange_filter(leaf, chunk, chunk_offset, bargs)) {
+		return 0;
+	}
+
+	/* vrange filter */
+	if ((bargs->flags & BTRFS_BALANCE_ARGS_VRANGE) &&
+	    chunk_vrange_filter(leaf, chunk, chunk_offset, bargs)) {
+		return 0;
+	}
+
+	/* soft profile changing mode */
+	if ((bargs->flags & BTRFS_BALANCE_ARGS_SOFT) &&
+	    chunk_soft_convert_filter(chunk_type, bargs)) {
+		return 0;
+	}
+
+	return 1;
+}
+
 static u64 div_factor(u64 num, int factor)
 {
 	if (factor == 10)
@@ -2086,29 +2436,28 @@
 	return num;
 }
 
-int btrfs_balance(struct btrfs_root *dev_root)
+static int __btrfs_balance(struct btrfs_fs_info *fs_info)
 {
-	int ret;
-	struct list_head *devices = &dev_root->fs_info->fs_devices->devices;
+	struct btrfs_balance_control *bctl = fs_info->balance_ctl;
+	struct btrfs_root *chunk_root = fs_info->chunk_root;
+	struct btrfs_root *dev_root = fs_info->dev_root;
+	struct list_head *devices;
 	struct btrfs_device *device;
 	u64 old_size;
 	u64 size_to_free;
+	struct btrfs_chunk *chunk;
 	struct btrfs_path *path;
 	struct btrfs_key key;
-	struct btrfs_root *chunk_root = dev_root->fs_info->chunk_root;
-	struct btrfs_trans_handle *trans;
 	struct btrfs_key found_key;
-
-	if (dev_root->fs_info->sb->s_flags & MS_RDONLY)
-		return -EROFS;
-
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
-
-	mutex_lock(&dev_root->fs_info->volume_mutex);
-	dev_root = dev_root->fs_info->dev_root;
+	struct btrfs_trans_handle *trans;
+	struct extent_buffer *leaf;
+	int slot;
+	int ret;
+	int enospc_errors = 0;
+	bool counting = true;
 
 	/* step one make some room on all the devices */
+	devices = &fs_info->fs_devices->devices;
 	list_for_each_entry(device, devices, dev_list) {
 		old_size = device->total_bytes;
 		size_to_free = div_factor(old_size, 1);
@@ -2137,11 +2486,23 @@
 		ret = -ENOMEM;
 		goto error;
 	}
+
+	/* zero out stat counters */
+	spin_lock(&fs_info->balance_lock);
+	memset(&bctl->stat, 0, sizeof(bctl->stat));
+	spin_unlock(&fs_info->balance_lock);
+again:
 	key.objectid = BTRFS_FIRST_CHUNK_TREE_OBJECTID;
 	key.offset = (u64)-1;
 	key.type = BTRFS_CHUNK_ITEM_KEY;
 
 	while (1) {
+		if ((!counting && atomic_read(&fs_info->balance_pause_req)) ||
+		    atomic_read(&fs_info->balance_cancel_req)) {
+			ret = -ECANCELED;
+			goto error;
+		}
+
 		ret = btrfs_search_slot(NULL, chunk_root, &key, path, 0, 0);
 		if (ret < 0)
 			goto error;
@@ -2151,15 +2512,19 @@
 		 * failed
 		 */
 		if (ret == 0)
-			break;
+			BUG(); /* FIXME break ? */
 
 		ret = btrfs_previous_item(chunk_root, path, 0,
 					  BTRFS_CHUNK_ITEM_KEY);
-		if (ret)
+		if (ret) {
+			ret = 0;
 			break;
+		}
 
-		btrfs_item_key_to_cpu(path->nodes[0], &found_key,
-				      path->slots[0]);
+		leaf = path->nodes[0];
+		slot = path->slots[0];
+		btrfs_item_key_to_cpu(leaf, &found_key, slot);
+
 		if (found_key.objectid != key.objectid)
 			break;
 
@@ -2167,22 +2532,375 @@
 		if (found_key.offset == 0)
 			break;
 
+		chunk = btrfs_item_ptr(leaf, slot, struct btrfs_chunk);
+
+		if (!counting) {
+			spin_lock(&fs_info->balance_lock);
+			bctl->stat.considered++;
+			spin_unlock(&fs_info->balance_lock);
+		}
+
+		ret = should_balance_chunk(chunk_root, leaf, chunk,
+					   found_key.offset);
 		btrfs_release_path(path);
+		if (!ret)
+			goto loop;
+
+		if (counting) {
+			spin_lock(&fs_info->balance_lock);
+			bctl->stat.expected++;
+			spin_unlock(&fs_info->balance_lock);
+			goto loop;
+		}
+
 		ret = btrfs_relocate_chunk(chunk_root,
 					   chunk_root->root_key.objectid,
 					   found_key.objectid,
 					   found_key.offset);
 		if (ret && ret != -ENOSPC)
 			goto error;
+		if (ret == -ENOSPC) {
+			enospc_errors++;
+		} else {
+			spin_lock(&fs_info->balance_lock);
+			bctl->stat.completed++;
+			spin_unlock(&fs_info->balance_lock);
+		}
+loop:
 		key.offset = found_key.offset - 1;
 	}
-	ret = 0;
+
+	if (counting) {
+		btrfs_release_path(path);
+		counting = false;
+		goto again;
+	}
 error:
 	btrfs_free_path(path);
-	mutex_unlock(&dev_root->fs_info->volume_mutex);
+	if (enospc_errors) {
+		printk(KERN_INFO "btrfs: %d enospc errors during balance\n",
+		       enospc_errors);
+		if (!ret)
+			ret = -ENOSPC;
+	}
+
 	return ret;
 }
 
+static inline int balance_need_close(struct btrfs_fs_info *fs_info)
+{
+	/* cancel requested || normal exit path */
+	return atomic_read(&fs_info->balance_cancel_req) ||
+		(atomic_read(&fs_info->balance_pause_req) == 0 &&
+		 atomic_read(&fs_info->balance_cancel_req) == 0);
+}
+
+static void __cancel_balance(struct btrfs_fs_info *fs_info)
+{
+	int ret;
+
+	unset_balance_control(fs_info);
+	ret = del_balance_item(fs_info->tree_root);
+	BUG_ON(ret);
+}
+
+void update_ioctl_balance_args(struct btrfs_fs_info *fs_info, int lock,
+			       struct btrfs_ioctl_balance_args *bargs);
+
+/*
+ * Should be called with both balance and volume mutexes held
+ */
+int btrfs_balance(struct btrfs_balance_control *bctl,
+		  struct btrfs_ioctl_balance_args *bargs)
+{
+	struct btrfs_fs_info *fs_info = bctl->fs_info;
+	u64 allowed;
+	int ret;
+
+	if (btrfs_fs_closing(fs_info) ||
+	    atomic_read(&fs_info->balance_pause_req) ||
+	    atomic_read(&fs_info->balance_cancel_req)) {
+		ret = -EINVAL;
+		goto out;
+	}
+
+	/*
+	 * In case of mixed groups both data and meta should be picked,
+	 * and identical options should be given for both of them.
+	 */
+	allowed = btrfs_super_incompat_flags(fs_info->super_copy);
+	if ((allowed & BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS) &&
+	    (bctl->flags & (BTRFS_BALANCE_DATA | BTRFS_BALANCE_METADATA))) {
+		if (!(bctl->flags & BTRFS_BALANCE_DATA) ||
+		    !(bctl->flags & BTRFS_BALANCE_METADATA) ||
+		    memcmp(&bctl->data, &bctl->meta, sizeof(bctl->data))) {
+			printk(KERN_ERR "btrfs: with mixed groups data and "
+			       "metadata balance options must be the same\n");
+			ret = -EINVAL;
+			goto out;
+		}
+	}
+
+	/*
+	 * Profile changing sanity checks.  Skip them if a simple
+	 * balance is requested.
+	 */
+	if (!((bctl->data.flags | bctl->sys.flags | bctl->meta.flags) &
+	      BTRFS_BALANCE_ARGS_CONVERT))
+		goto do_balance;
+
+	allowed = BTRFS_AVAIL_ALLOC_BIT_SINGLE;
+	if (fs_info->fs_devices->num_devices == 1)
+		allowed |= BTRFS_BLOCK_GROUP_DUP;
+	else if (fs_info->fs_devices->num_devices < 4)
+		allowed |= (BTRFS_BLOCK_GROUP_RAID0 | BTRFS_BLOCK_GROUP_RAID1);
+	else
+		allowed |= (BTRFS_BLOCK_GROUP_RAID0 | BTRFS_BLOCK_GROUP_RAID1 |
+				BTRFS_BLOCK_GROUP_RAID10);
+
+	if (!profile_is_valid(bctl->data.target, 1) ||
+	    bctl->data.target & ~allowed) {
+		printk(KERN_ERR "btrfs: unable to start balance with target "
+		       "data profile %llu\n",
+		       (unsigned long long)bctl->data.target);
+		ret = -EINVAL;
+		goto out;
+	}
+	if (!profile_is_valid(bctl->meta.target, 1) ||
+	    bctl->meta.target & ~allowed) {
+		printk(KERN_ERR "btrfs: unable to start balance with target "
+		       "metadata profile %llu\n",
+		       (unsigned long long)bctl->meta.target);
+		ret = -EINVAL;
+		goto out;
+	}
+	if (!profile_is_valid(bctl->sys.target, 1) ||
+	    bctl->sys.target & ~allowed) {
+		printk(KERN_ERR "btrfs: unable to start balance with target "
+		       "system profile %llu\n",
+		       (unsigned long long)bctl->sys.target);
+		ret = -EINVAL;
+		goto out;
+	}
+
+	if (bctl->data.target & BTRFS_BLOCK_GROUP_DUP) {
+		printk(KERN_ERR "btrfs: dup for data is not allowed\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
+	/* allow to reduce meta or sys integrity only if force set */
+	allowed = BTRFS_BLOCK_GROUP_DUP | BTRFS_BLOCK_GROUP_RAID1 |
+			BTRFS_BLOCK_GROUP_RAID10;
+	if (((bctl->sys.flags & BTRFS_BALANCE_ARGS_CONVERT) &&
+	     (fs_info->avail_system_alloc_bits & allowed) &&
+	     !(bctl->sys.target & allowed)) ||
+	    ((bctl->meta.flags & BTRFS_BALANCE_ARGS_CONVERT) &&
+	     (fs_info->avail_metadata_alloc_bits & allowed) &&
+	     !(bctl->meta.target & allowed))) {
+		if (bctl->flags & BTRFS_BALANCE_FORCE) {
+			printk(KERN_INFO "btrfs: force reducing metadata "
+			       "integrity\n");
+		} else {
+			printk(KERN_ERR "btrfs: balance will reduce metadata "
+			       "integrity, use force if you want this\n");
+			ret = -EINVAL;
+			goto out;
+		}
+	}
+
+do_balance:
+	ret = insert_balance_item(fs_info->tree_root, bctl);
+	if (ret && ret != -EEXIST)
+		goto out;
+
+	if (!(bctl->flags & BTRFS_BALANCE_RESUME)) {
+		BUG_ON(ret == -EEXIST);
+		set_balance_control(bctl);
+	} else {
+		BUG_ON(ret != -EEXIST);
+		spin_lock(&fs_info->balance_lock);
+		update_balance_args(bctl);
+		spin_unlock(&fs_info->balance_lock);
+	}
+
+	atomic_inc(&fs_info->balance_running);
+	mutex_unlock(&fs_info->balance_mutex);
+
+	ret = __btrfs_balance(fs_info);
+
+	mutex_lock(&fs_info->balance_mutex);
+	atomic_dec(&fs_info->balance_running);
+
+	if (bargs) {
+		memset(bargs, 0, sizeof(*bargs));
+		update_ioctl_balance_args(fs_info, 0, bargs);
+	}
+
+	if ((ret && ret != -ECANCELED && ret != -ENOSPC) ||
+	    balance_need_close(fs_info)) {
+		__cancel_balance(fs_info);
+	}
+
+	wake_up(&fs_info->balance_wait_q);
+
+	return ret;
+out:
+	if (bctl->flags & BTRFS_BALANCE_RESUME)
+		__cancel_balance(fs_info);
+	else
+		kfree(bctl);
+	return ret;
+}
+
+static int balance_kthread(void *data)
+{
+	struct btrfs_balance_control *bctl =
+			(struct btrfs_balance_control *)data;
+	struct btrfs_fs_info *fs_info = bctl->fs_info;
+	int ret = 0;
+
+	mutex_lock(&fs_info->volume_mutex);
+	mutex_lock(&fs_info->balance_mutex);
+
+	set_balance_control(bctl);
+
+	if (btrfs_test_opt(fs_info->tree_root, SKIP_BALANCE)) {
+		printk(KERN_INFO "btrfs: force skipping balance\n");
+	} else {
+		printk(KERN_INFO "btrfs: continuing balance\n");
+		ret = btrfs_balance(bctl, NULL);
+	}
+
+	mutex_unlock(&fs_info->balance_mutex);
+	mutex_unlock(&fs_info->volume_mutex);
+	return ret;
+}
+
+int btrfs_recover_balance(struct btrfs_root *tree_root)
+{
+	struct task_struct *tsk;
+	struct btrfs_balance_control *bctl;
+	struct btrfs_balance_item *item;
+	struct btrfs_disk_balance_args disk_bargs;
+	struct btrfs_path *path;
+	struct extent_buffer *leaf;
+	struct btrfs_key key;
+	int ret;
+
+	path = btrfs_alloc_path();
+	if (!path)
+		return -ENOMEM;
+
+	bctl = kzalloc(sizeof(*bctl), GFP_NOFS);
+	if (!bctl) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	key.objectid = BTRFS_BALANCE_OBJECTID;
+	key.type = BTRFS_BALANCE_ITEM_KEY;
+	key.offset = 0;
+
+	ret = btrfs_search_slot(NULL, tree_root, &key, path, 0, 0);
+	if (ret < 0)
+		goto out_bctl;
+	if (ret > 0) { /* ret = -ENOENT; */
+		ret = 0;
+		goto out_bctl;
+	}
+
+	leaf = path->nodes[0];
+	item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_balance_item);
+
+	bctl->fs_info = tree_root->fs_info;
+	bctl->flags = btrfs_balance_flags(leaf, item) | BTRFS_BALANCE_RESUME;
+
+	btrfs_balance_data(leaf, item, &disk_bargs);
+	btrfs_disk_balance_args_to_cpu(&bctl->data, &disk_bargs);
+	btrfs_balance_meta(leaf, item, &disk_bargs);
+	btrfs_disk_balance_args_to_cpu(&bctl->meta, &disk_bargs);
+	btrfs_balance_sys(leaf, item, &disk_bargs);
+	btrfs_disk_balance_args_to_cpu(&bctl->sys, &disk_bargs);
+
+	tsk = kthread_run(balance_kthread, bctl, "btrfs-balance");
+	if (IS_ERR(tsk))
+		ret = PTR_ERR(tsk);
+	else
+		goto out;
+
+out_bctl:
+	kfree(bctl);
+out:
+	btrfs_free_path(path);
+	return ret;
+}
+
+int btrfs_pause_balance(struct btrfs_fs_info *fs_info)
+{
+	int ret = 0;
+
+	mutex_lock(&fs_info->balance_mutex);
+	if (!fs_info->balance_ctl) {
+		mutex_unlock(&fs_info->balance_mutex);
+		return -ENOTCONN;
+	}
+
+	if (atomic_read(&fs_info->balance_running)) {
+		atomic_inc(&fs_info->balance_pause_req);
+		mutex_unlock(&fs_info->balance_mutex);
+
+		wait_event(fs_info->balance_wait_q,
+			   atomic_read(&fs_info->balance_running) == 0);
+
+		mutex_lock(&fs_info->balance_mutex);
+		/* we are good with balance_ctl ripped off from under us */
+		BUG_ON(atomic_read(&fs_info->balance_running));
+		atomic_dec(&fs_info->balance_pause_req);
+	} else {
+		ret = -ENOTCONN;
+	}
+
+	mutex_unlock(&fs_info->balance_mutex);
+	return ret;
+}
+
+int btrfs_cancel_balance(struct btrfs_fs_info *fs_info)
+{
+	mutex_lock(&fs_info->balance_mutex);
+	if (!fs_info->balance_ctl) {
+		mutex_unlock(&fs_info->balance_mutex);
+		return -ENOTCONN;
+	}
+
+	atomic_inc(&fs_info->balance_cancel_req);
+	/*
+	 * if we are running just wait and return, balance item is
+	 * deleted in btrfs_balance in this case
+	 */
+	if (atomic_read(&fs_info->balance_running)) {
+		mutex_unlock(&fs_info->balance_mutex);
+		wait_event(fs_info->balance_wait_q,
+			   atomic_read(&fs_info->balance_running) == 0);
+		mutex_lock(&fs_info->balance_mutex);
+	} else {
+		/* __cancel_balance needs volume_mutex */
+		mutex_unlock(&fs_info->balance_mutex);
+		mutex_lock(&fs_info->volume_mutex);
+		mutex_lock(&fs_info->balance_mutex);
+
+		if (fs_info->balance_ctl)
+			__cancel_balance(fs_info);
+
+		mutex_unlock(&fs_info->volume_mutex);
+	}
+
+	BUG_ON(fs_info->balance_ctl || atomic_read(&fs_info->balance_running));
+	atomic_dec(&fs_info->balance_cancel_req);
+	mutex_unlock(&fs_info->balance_mutex);
+	return 0;
+}
+
 /*
  * shrinking a device means finding all of the device extents past
  * the new size, and then following the back refs to the chunks.
@@ -2323,8 +3041,7 @@
 	return ret;
 }
 
-static int btrfs_add_system_chunk(struct btrfs_trans_handle *trans,
-			   struct btrfs_root *root,
+static int btrfs_add_system_chunk(struct btrfs_root *root,
 			   struct btrfs_key *key,
 			   struct btrfs_chunk *chunk, int item_size)
 {
@@ -2441,10 +3158,14 @@
 		max_stripe_size = 1024 * 1024 * 1024;
 		max_chunk_size = 10 * max_stripe_size;
 	} else if (type & BTRFS_BLOCK_GROUP_METADATA) {
-		max_stripe_size = 256 * 1024 * 1024;
+		/* for larger filesystems, use larger metadata chunks */
+		if (fs_devices->total_rw_bytes > 50ULL * 1024 * 1024 * 1024)
+			max_stripe_size = 1024 * 1024 * 1024;
+		else
+			max_stripe_size = 256 * 1024 * 1024;
 		max_chunk_size = max_stripe_size;
 	} else if (type & BTRFS_BLOCK_GROUP_SYSTEM) {
-		max_stripe_size = 8 * 1024 * 1024;
+		max_stripe_size = 32 * 1024 * 1024;
 		max_chunk_size = 2 * max_stripe_size;
 	} else {
 		printk(KERN_ERR "btrfs: invalid chunk type 0x%llx requested\n",
@@ -2496,7 +3217,7 @@
 		if (total_avail == 0)
 			continue;
 
-		ret = find_free_dev_extent(trans, device,
+		ret = find_free_dev_extent(device,
 					   max_stripe_size * dev_stripes,
 					   &dev_offset, &max_avail);
 		if (ret && ret != -ENOSPC)
@@ -2687,7 +3408,7 @@
 	BUG_ON(ret);
 
 	if (map->type & BTRFS_BLOCK_GROUP_SYSTEM) {
-		ret = btrfs_add_system_chunk(trans, chunk_root, &key, chunk,
+		ret = btrfs_add_system_chunk(chunk_root, &key, chunk,
 					     item_size);
 		BUG_ON(ret);
 	}
@@ -2752,8 +3473,7 @@
 		return ret;
 
 	alloc_profile = BTRFS_BLOCK_GROUP_METADATA |
-			(fs_info->metadata_alloc_profile &
-			 fs_info->avail_metadata_alloc_bits);
+				fs_info->avail_metadata_alloc_bits;
 	alloc_profile = btrfs_reduce_alloc_profile(root, alloc_profile);
 
 	ret = __btrfs_alloc_chunk(trans, extent_root, &map, &chunk_size,
@@ -2763,8 +3483,7 @@
 	sys_chunk_offset = chunk_offset + chunk_size;
 
 	alloc_profile = BTRFS_BLOCK_GROUP_SYSTEM |
-			(fs_info->system_alloc_profile &
-			 fs_info->avail_system_alloc_bits);
+				fs_info->avail_system_alloc_bits;
 	alloc_profile = btrfs_reduce_alloc_profile(root, alloc_profile);
 
 	ret = __btrfs_alloc_chunk(trans, extent_root, &sys_map,
@@ -2901,26 +3620,13 @@
 	u64 stripe_nr;
 	u64 stripe_nr_orig;
 	u64 stripe_nr_end;
-	int stripes_allocated = 8;
-	int stripes_required = 1;
 	int stripe_index;
 	int i;
+	int ret = 0;
 	int num_stripes;
 	int max_errors = 0;
 	struct btrfs_bio *bbio = NULL;
 
-	if (bbio_ret && !(rw & (REQ_WRITE | REQ_DISCARD)))
-		stripes_allocated = 1;
-again:
-	if (bbio_ret) {
-		bbio = kzalloc(btrfs_bio_size(stripes_allocated),
-				GFP_NOFS);
-		if (!bbio)
-			return -ENOMEM;
-
-		atomic_set(&bbio->error, 0);
-	}
-
 	read_lock(&em_tree->lock);
 	em = lookup_extent_mapping(em_tree, logical, *length);
 	read_unlock(&em_tree->lock);
@@ -2939,32 +3645,6 @@
 	if (mirror_num > map->num_stripes)
 		mirror_num = 0;
 
-	/* if our btrfs_bio struct is too small, back off and try again */
-	if (rw & REQ_WRITE) {
-		if (map->type & (BTRFS_BLOCK_GROUP_RAID1 |
-				 BTRFS_BLOCK_GROUP_DUP)) {
-			stripes_required = map->num_stripes;
-			max_errors = 1;
-		} else if (map->type & BTRFS_BLOCK_GROUP_RAID10) {
-			stripes_required = map->sub_stripes;
-			max_errors = 1;
-		}
-	}
-	if (rw & REQ_DISCARD) {
-		if (map->type & (BTRFS_BLOCK_GROUP_RAID0 |
-				 BTRFS_BLOCK_GROUP_RAID1 |
-				 BTRFS_BLOCK_GROUP_DUP |
-				 BTRFS_BLOCK_GROUP_RAID10)) {
-			stripes_required = map->num_stripes;
-		}
-	}
-	if (bbio_ret && (rw & (REQ_WRITE | REQ_DISCARD)) &&
-	    stripes_allocated < stripes_required) {
-		stripes_allocated = map->num_stripes;
-		free_extent_map(em);
-		kfree(bbio);
-		goto again;
-	}
 	stripe_nr = offset;
 	/*
 	 * stripe_nr counts the total number of stripes we have to stride
@@ -2980,10 +3660,7 @@
 
 	if (rw & REQ_DISCARD)
 		*length = min_t(u64, em->len - offset, *length);
-	else if (map->type & (BTRFS_BLOCK_GROUP_RAID0 |
-			      BTRFS_BLOCK_GROUP_RAID1 |
-			      BTRFS_BLOCK_GROUP_RAID10 |
-			      BTRFS_BLOCK_GROUP_DUP)) {
+	else if (map->type & BTRFS_BLOCK_GROUP_PROFILE_MASK) {
 		/* we limit the length of each bio to what fits in a stripe */
 		*length = min_t(u64, em->len - offset,
 				map->stripe_len - stripe_offset);
@@ -3059,81 +3736,55 @@
 	}
 	BUG_ON(stripe_index >= map->num_stripes);
 
+	bbio = kzalloc(btrfs_bio_size(num_stripes), GFP_NOFS);
+	if (!bbio) {
+		ret = -ENOMEM;
+		goto out;
+	}
+	atomic_set(&bbio->error, 0);
+
 	if (rw & REQ_DISCARD) {
+		int factor = 0;
+		int sub_stripes = 0;
+		u64 stripes_per_dev = 0;
+		u32 remaining_stripes = 0;
+
+		if (map->type &
+		    (BTRFS_BLOCK_GROUP_RAID0 | BTRFS_BLOCK_GROUP_RAID10)) {
+			if (map->type & BTRFS_BLOCK_GROUP_RAID0)
+				sub_stripes = 1;
+			else
+				sub_stripes = map->sub_stripes;
+
+			factor = map->num_stripes / sub_stripes;
+			stripes_per_dev = div_u64_rem(stripe_nr_end -
+						      stripe_nr_orig,
+						      factor,
+						      &remaining_stripes);
+		}
+
 		for (i = 0; i < num_stripes; i++) {
 			bbio->stripes[i].physical =
 				map->stripes[stripe_index].physical +
 				stripe_offset + stripe_nr * map->stripe_len;
 			bbio->stripes[i].dev = map->stripes[stripe_index].dev;
 
-			if (map->type & BTRFS_BLOCK_GROUP_RAID0) {
-				u64 stripes;
-				u32 last_stripe = 0;
-				int j;
-
-				div_u64_rem(stripe_nr_end - 1,
-					    map->num_stripes,
-					    &last_stripe);
-
-				for (j = 0; j < map->num_stripes; j++) {
-					u32 test;
-
-					div_u64_rem(stripe_nr_end - 1 - j,
-						    map->num_stripes, &test);
-					if (test == stripe_index)
-						break;
-				}
-				stripes = stripe_nr_end - 1 - j;
-				do_div(stripes, map->num_stripes);
-				bbio->stripes[i].length = map->stripe_len *
-					(stripes - stripe_nr + 1);
-
-				if (i == 0) {
+			if (map->type & (BTRFS_BLOCK_GROUP_RAID0 |
+					 BTRFS_BLOCK_GROUP_RAID10)) {
+				bbio->stripes[i].length = stripes_per_dev *
+							  map->stripe_len;
+				if (i / sub_stripes < remaining_stripes)
+					bbio->stripes[i].length +=
+						map->stripe_len;
+				if (i < sub_stripes)
 					bbio->stripes[i].length -=
 						stripe_offset;
+				if ((i / sub_stripes + 1) %
+				    sub_stripes == remaining_stripes)
+					bbio->stripes[i].length -=
+						stripe_end_offset;
+				if (i == sub_stripes - 1)
 					stripe_offset = 0;
-				}
-				if (stripe_index == last_stripe)
-					bbio->stripes[i].length -=
-						stripe_end_offset;
-			} else if (map->type & BTRFS_BLOCK_GROUP_RAID10) {
-				u64 stripes;
-				int j;
-				int factor = map->num_stripes /
-					     map->sub_stripes;
-				u32 last_stripe = 0;
-
-				div_u64_rem(stripe_nr_end - 1,
-					    factor, &last_stripe);
-				last_stripe *= map->sub_stripes;
-
-				for (j = 0; j < factor; j++) {
-					u32 test;
-
-					div_u64_rem(stripe_nr_end - 1 - j,
-						    factor, &test);
-
-					if (test ==
-					    stripe_index / map->sub_stripes)
-						break;
-				}
-				stripes = stripe_nr_end - 1 - j;
-				do_div(stripes, factor);
-				bbio->stripes[i].length = map->stripe_len *
-					(stripes - stripe_nr + 1);
-
-				if (i < map->sub_stripes) {
-					bbio->stripes[i].length -=
-						stripe_offset;
-					if (i == map->sub_stripes - 1)
-						stripe_offset = 0;
-				}
-				if (stripe_index >= last_stripe &&
-				    stripe_index <= (last_stripe +
-						     map->sub_stripes - 1)) {
-					bbio->stripes[i].length -=
-						stripe_end_offset;
-				}
 			} else
 				bbio->stripes[i].length = *length;
 
@@ -3155,15 +3806,22 @@
 			stripe_index++;
 		}
 	}
-	if (bbio_ret) {
-		*bbio_ret = bbio;
-		bbio->num_stripes = num_stripes;
-		bbio->max_errors = max_errors;
-		bbio->mirror_num = mirror_num;
+
+	if (rw & REQ_WRITE) {
+		if (map->type & (BTRFS_BLOCK_GROUP_RAID1 |
+				 BTRFS_BLOCK_GROUP_RAID10 |
+				 BTRFS_BLOCK_GROUP_DUP)) {
+			max_errors = 1;
+		}
 	}
+
+	*bbio_ret = bbio;
+	bbio->num_stripes = num_stripes;
+	bbio->max_errors = max_errors;
+	bbio->mirror_num = mirror_num;
 out:
 	free_extent_map(em);
-	return 0;
+	return ret;
 }
 
 int btrfs_map_block(struct btrfs_mapping_tree *map_tree, int rw,
@@ -3304,7 +3962,7 @@
 	/* don't bother with additional async steps for reads, right now */
 	if (!(rw & REQ_WRITE)) {
 		bio_get(bio);
-		submit_bio(rw, bio);
+		btrfsic_submit_bio(rw, bio);
 		bio_put(bio);
 		return 0;
 	}
@@ -3399,7 +4057,7 @@
 			if (async_submit)
 				schedule_bio(root, dev, rw, bio);
 			else
-				submit_bio(rw, bio);
+				btrfsic_submit_bio(rw, bio);
 		} else {
 			bio->bi_bdev = root->fs_info->fs_devices->latest_bdev;
 			bio->bi_sector = logical >> 9;
@@ -3568,7 +4226,7 @@
 	struct btrfs_fs_devices *fs_devices;
 	int ret;
 
-	mutex_lock(&uuid_mutex);
+	BUG_ON(!mutex_is_locked(&uuid_mutex));
 
 	fs_devices = root->fs_info->fs_devices->seed;
 	while (fs_devices) {
@@ -3606,7 +4264,6 @@
 	fs_devices->seed = root->fs_info->fs_devices->seed;
 	root->fs_info->fs_devices->seed = fs_devices;
 out:
-	mutex_unlock(&uuid_mutex);
 	return ret;
 }
 
@@ -3749,6 +4406,9 @@
 	if (!path)
 		return -ENOMEM;
 
+	mutex_lock(&uuid_mutex);
+	lock_chunks(root);
+
 	/* first we search for all of the device items, and then we
 	 * read in all of the chunk items.  This way we can create chunk
 	 * mappings that reference all of the devices that are afound
@@ -3799,6 +4459,9 @@
 	}
 	ret = 0;
 error:
+	unlock_chunks(root);
+	mutex_unlock(&uuid_mutex);
+
 	btrfs_free_path(path);
 	return ret;
 }
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 78f2d4d..19ac950 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -186,6 +186,51 @@
 #define map_lookup_size(n) (sizeof(struct map_lookup) + \
 			    (sizeof(struct btrfs_bio_stripe) * (n)))
 
+/*
+ * Restriper's general type filter
+ */
+#define BTRFS_BALANCE_DATA		(1ULL << 0)
+#define BTRFS_BALANCE_SYSTEM		(1ULL << 1)
+#define BTRFS_BALANCE_METADATA		(1ULL << 2)
+
+#define BTRFS_BALANCE_TYPE_MASK		(BTRFS_BALANCE_DATA |	    \
+					 BTRFS_BALANCE_SYSTEM |	    \
+					 BTRFS_BALANCE_METADATA)
+
+#define BTRFS_BALANCE_FORCE		(1ULL << 3)
+#define BTRFS_BALANCE_RESUME		(1ULL << 4)
+
+/*
+ * Balance filters
+ */
+#define BTRFS_BALANCE_ARGS_PROFILES	(1ULL << 0)
+#define BTRFS_BALANCE_ARGS_USAGE	(1ULL << 1)
+#define BTRFS_BALANCE_ARGS_DEVID	(1ULL << 2)
+#define BTRFS_BALANCE_ARGS_DRANGE	(1ULL << 3)
+#define BTRFS_BALANCE_ARGS_VRANGE	(1ULL << 4)
+
+/*
+ * Profile changing flags.  When SOFT is set we won't relocate chunk if
+ * it already has the target profile (even though it may be
+ * half-filled).
+ */
+#define BTRFS_BALANCE_ARGS_CONVERT	(1ULL << 8)
+#define BTRFS_BALANCE_ARGS_SOFT		(1ULL << 9)
+
+struct btrfs_balance_args;
+struct btrfs_balance_progress;
+struct btrfs_balance_control {
+	struct btrfs_fs_info *fs_info;
+
+	struct btrfs_balance_args data;
+	struct btrfs_balance_args meta;
+	struct btrfs_balance_args sys;
+
+	u64 flags;
+
+	struct btrfs_balance_progress stat;
+};
+
 int btrfs_account_dev_extents_size(struct btrfs_device *device, u64 start,
 				   u64 end, u64 *length);
 
@@ -228,9 +273,12 @@
 				       u8 *uuid, u8 *fsid);
 int btrfs_shrink_device(struct btrfs_device *device, u64 new_size);
 int btrfs_init_new_device(struct btrfs_root *root, char *path);
-int btrfs_balance(struct btrfs_root *dev_root);
+int btrfs_balance(struct btrfs_balance_control *bctl,
+		  struct btrfs_ioctl_balance_args *bargs);
+int btrfs_recover_balance(struct btrfs_root *tree_root);
+int btrfs_pause_balance(struct btrfs_fs_info *fs_info);
+int btrfs_cancel_balance(struct btrfs_fs_info *fs_info);
 int btrfs_chunk_readonly(struct btrfs_root *root, u64 chunk_offset);
-int find_free_dev_extent(struct btrfs_trans_handle *trans,
-			 struct btrfs_device *device, u64 num_bytes,
+int find_free_dev_extent(struct btrfs_device *device, u64 num_bytes,
 			 u64 *start, u64 *max_avail);
 #endif
diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c
index 3848b04..e7a5659 100644
--- a/fs/btrfs/xattr.c
+++ b/fs/btrfs/xattr.c
@@ -200,7 +200,7 @@
 	ret = btrfs_update_inode(trans, root, inode);
 	BUG_ON(ret);
 out:
-	btrfs_end_transaction_throttle(trans, root);
+	btrfs_end_transaction(trans, root);
 	return ret;
 }
 
diff --git a/fs/inode.c b/fs/inode.c
index 4fa4f09..fb10d86 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -322,9 +322,6 @@
 void set_nlink(struct inode *inode, unsigned int nlink)
 {
 	if (!nlink) {
-		printk_ratelimited(KERN_INFO
-			"set_nlink() clearing i_nlink on %s inode %li\n",
-			inode->i_sb->s_type->name, inode->i_ino);
 		clear_nlink(inode);
 	} else {
 		/* Yes, some filesystems do change nlink from zero to one */
diff --git a/fs/namei.c b/fs/namei.c
index c283a1e..208c6aa 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -140,21 +140,19 @@
 
 static char *getname_flags(const char __user *filename, int flags, int *empty)
 {
-	char *tmp, *result;
+	char *result = __getname();
+	int retval;
 
-	result = ERR_PTR(-ENOMEM);
-	tmp = __getname();
-	if (tmp)  {
-		int retval = do_getname(filename, tmp);
+	if (!result)
+		return ERR_PTR(-ENOMEM);
 
-		result = tmp;
-		if (retval < 0) {
-			if (retval == -ENOENT && empty)
-				*empty = 1;
-			if (retval != -ENOENT || !(flags & LOOKUP_EMPTY)) {
-				__putname(tmp);
-				result = ERR_PTR(retval);
-			}
+	retval = do_getname(filename, result);
+	if (retval < 0) {
+		if (retval == -ENOENT && empty)
+			*empty = 1;
+		if (retval != -ENOENT || !(flags & LOOKUP_EMPTY)) {
+			__putname(result);
+			return ERR_PTR(retval);
 		}
 	}
 	audit_getname(result);
diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c
index 281ae95..48cfac3 100644
--- a/fs/nfs/blocklayout/blocklayout.c
+++ b/fs/nfs/blocklayout/blocklayout.c
@@ -90,9 +90,9 @@
  */
 struct parallel_io {
 	struct kref refcnt;
-	struct rpc_call_ops call_ops;
-	void (*pnfs_callback) (void *data);
+	void (*pnfs_callback) (void *data, int num_se);
 	void *data;
+	int bse_count;
 };
 
 static inline struct parallel_io *alloc_parallel(void *data)
@@ -103,6 +103,7 @@
 	if (rv) {
 		rv->data = data;
 		kref_init(&rv->refcnt);
+		rv->bse_count = 0;
 	}
 	return rv;
 }
@@ -117,7 +118,7 @@
 	struct parallel_io *p = container_of(kref, struct parallel_io, refcnt);
 
 	dprintk("%s enter\n", __func__);
-	p->pnfs_callback(p->data);
+	p->pnfs_callback(p->data, p->bse_count);
 	kfree(p);
 }
 
@@ -146,14 +147,19 @@
 {
 	struct bio *bio;
 
+	npg = min(npg, BIO_MAX_PAGES);
 	bio = bio_alloc(GFP_NOIO, npg);
-	if (!bio)
-		return NULL;
+	if (!bio && (current->flags & PF_MEMALLOC)) {
+		while (!bio && (npg /= 2))
+			bio = bio_alloc(GFP_NOIO, npg);
+	}
 
-	bio->bi_sector = isect - be->be_f_offset + be->be_v_offset;
-	bio->bi_bdev = be->be_mdev;
-	bio->bi_end_io = end_io;
-	bio->bi_private = par;
+	if (bio) {
+		bio->bi_sector = isect - be->be_f_offset + be->be_v_offset;
+		bio->bi_bdev = be->be_mdev;
+		bio->bi_end_io = end_io;
+		bio->bi_private = par;
+	}
 	return bio;
 }
 
@@ -212,22 +218,15 @@
 }
 
 static void
-bl_end_par_io_read(void *data)
+bl_end_par_io_read(void *data, int unused)
 {
 	struct nfs_read_data *rdata = data;
 
+	rdata->task.tk_status = rdata->pnfs_error;
 	INIT_WORK(&rdata->task.u.tk_work, bl_read_cleanup);
 	schedule_work(&rdata->task.u.tk_work);
 }
 
-/* We don't want normal .rpc_call_done callback used, so we replace it
- * with this stub.
- */
-static void bl_rpc_do_nothing(struct rpc_task *task, void *calldata)
-{
-	return;
-}
-
 static enum pnfs_try_status
 bl_read_pagelist(struct nfs_read_data *rdata)
 {
@@ -247,8 +246,6 @@
 	par = alloc_parallel(rdata);
 	if (!par)
 		goto use_mds;
-	par->call_ops = *rdata->mds_ops;
-	par->call_ops.rpc_call_done = bl_rpc_do_nothing;
 	par->pnfs_callback = bl_end_par_io_read;
 	/* At this point, we can no longer jump to use_mds */
 
@@ -322,6 +319,7 @@
 {
 	sector_t isect, end;
 	struct pnfs_block_extent *be;
+	struct pnfs_block_short_extent *se;
 
 	dprintk("%s(%llu, %u)\n", __func__, offset, count);
 	if (count == 0)
@@ -334,8 +332,11 @@
 		be = bl_find_get_extent(bl, isect, NULL);
 		BUG_ON(!be); /* FIXME */
 		len = min(end, be->be_f_offset + be->be_length) - isect;
-		if (be->be_state == PNFS_BLOCK_INVALID_DATA)
-			bl_mark_for_commit(be, isect, len); /* What if fails? */
+		if (be->be_state == PNFS_BLOCK_INVALID_DATA) {
+			se = bl_pop_one_short_extent(be->be_inval);
+			BUG_ON(!se);
+			bl_mark_for_commit(be, isect, len, se);
+		}
 		isect += len;
 		bl_put_extent(be);
 	}
@@ -357,7 +358,8 @@
 		end_page_writeback(page);
 		page_cache_release(page);
 	} while (bvec >= bio->bi_io_vec);
-	if (!uptodate) {
+
+	if (unlikely(!uptodate)) {
 		if (!wdata->pnfs_error)
 			wdata->pnfs_error = -EIO;
 		pnfs_set_lo_fail(wdata->lseg);
@@ -366,7 +368,6 @@
 	put_parallel(par);
 }
 
-/* This is basically copied from mpage_end_io_read */
 static void bl_end_io_write(struct bio *bio, int err)
 {
 	struct parallel_io *par = bio->bi_private;
@@ -392,7 +393,7 @@
 	dprintk("%s enter\n", __func__);
 	task = container_of(work, struct rpc_task, u.tk_work);
 	wdata = container_of(task, struct nfs_write_data, task);
-	if (!wdata->pnfs_error) {
+	if (likely(!wdata->pnfs_error)) {
 		/* Marks for LAYOUTCOMMIT */
 		mark_extents_written(BLK_LSEG2EXT(wdata->lseg),
 				     wdata->args.offset, wdata->args.count);
@@ -401,11 +402,16 @@
 }
 
 /* Called when last of bios associated with a bl_write_pagelist call finishes */
-static void bl_end_par_io_write(void *data)
+static void bl_end_par_io_write(void *data, int num_se)
 {
 	struct nfs_write_data *wdata = data;
 
-	wdata->task.tk_status = 0;
+	if (unlikely(wdata->pnfs_error)) {
+		bl_free_short_extents(&BLK_LSEG2EXT(wdata->lseg)->bl_inval,
+					num_se);
+	}
+
+	wdata->task.tk_status = wdata->pnfs_error;
 	wdata->verf.committed = NFS_FILE_SYNC;
 	INIT_WORK(&wdata->task.u.tk_work, bl_write_cleanup);
 	schedule_work(&wdata->task.u.tk_work);
@@ -484,6 +490,55 @@
 	return ret;
 }
 
+/* Find or create a zeroing page marked being writeback.
+ * Return ERR_PTR on error, NULL to indicate skip this page and page itself
+ * to indicate write out.
+ */
+static struct page *
+bl_find_get_zeroing_page(struct inode *inode, pgoff_t index,
+			struct pnfs_block_extent *cow_read)
+{
+	struct page *page;
+	int locked = 0;
+	page = find_get_page(inode->i_mapping, index);
+	if (page)
+		goto check_page;
+
+	page = find_or_create_page(inode->i_mapping, index, GFP_NOFS);
+	if (unlikely(!page)) {
+		dprintk("%s oom\n", __func__);
+		return ERR_PTR(-ENOMEM);
+	}
+	locked = 1;
+
+check_page:
+	/* PageDirty: Other will write this out
+	 * PageWriteback: Other is writing this out
+	 * PageUptodate: It was read before
+	 */
+	if (PageDirty(page) || PageWriteback(page)) {
+		print_page(page);
+		if (locked)
+			unlock_page(page);
+		page_cache_release(page);
+		return NULL;
+	}
+
+	if (!locked) {
+		lock_page(page);
+		locked = 1;
+		goto check_page;
+	}
+	if (!PageUptodate(page)) {
+		/* New page, readin or zero it */
+		init_page_for_write(page, cow_read);
+	}
+	set_page_writeback(page);
+	unlock_page(page);
+
+	return page;
+}
+
 static enum pnfs_try_status
 bl_write_pagelist(struct nfs_write_data *wdata, int sync)
 {
@@ -508,9 +563,7 @@
 	 */
 	par = alloc_parallel(wdata);
 	if (!par)
-		return PNFS_NOT_ATTEMPTED;
-	par->call_ops = *wdata->mds_ops;
-	par->call_ops.rpc_call_done = bl_rpc_do_nothing;
+		goto out_mds;
 	par->pnfs_callback = bl_end_par_io_write;
 	/* At this point, have to be more careful with error handling */
 
@@ -518,12 +571,15 @@
 	be = bl_find_get_extent(BLK_LSEG2EXT(wdata->lseg), isect, &cow_read);
 	if (!be || !is_writable(be, isect)) {
 		dprintk("%s no matching extents!\n", __func__);
-		wdata->pnfs_error = -EINVAL;
-		goto out;
+		goto out_mds;
 	}
 
 	/* First page inside INVALID extent */
 	if (be->be_state == PNFS_BLOCK_INVALID_DATA) {
+		if (likely(!bl_push_one_short_extent(be->be_inval)))
+			par->bse_count++;
+		else
+			goto out_mds;
 		temp = offset >> PAGE_CACHE_SHIFT;
 		npg_zero = do_div(temp, npg_per_block);
 		isect = (sector_t) (((offset - npg_zero * PAGE_CACHE_SIZE) &
@@ -543,36 +599,16 @@
 			dprintk("%s zero %dth page: index %lu isect %llu\n",
 				__func__, npg_zero, index,
 				(unsigned long long)isect);
-			page =
-			    find_or_create_page(wdata->inode->i_mapping, index,
-						GFP_NOFS);
-			if (!page) {
-				dprintk("%s oom\n", __func__);
-				wdata->pnfs_error = -ENOMEM;
+			page = bl_find_get_zeroing_page(wdata->inode, index,
+							cow_read);
+			if (unlikely(IS_ERR(page))) {
+				wdata->pnfs_error = PTR_ERR(page);
 				goto out;
-			}
-
-			/* PageDirty: Other will write this out
-			 * PageWriteback: Other is writing this out
-			 * PageUptodate: It was read before
-			 * sector_initialized: already written out
-			 */
-			if (PageDirty(page) || PageWriteback(page)) {
-				print_page(page);
-				unlock_page(page);
-				page_cache_release(page);
+			} else if (page == NULL)
 				goto next_page;
-			}
-			if (!PageUptodate(page)) {
-				/* New page, readin or zero it */
-				init_page_for_write(page, cow_read);
-			}
-			set_page_writeback(page);
-			unlock_page(page);
 
 			ret = bl_mark_sectors_init(be->be_inval, isect,
-						       PAGE_CACHE_SECTORS,
-						       NULL);
+						       PAGE_CACHE_SECTORS);
 			if (unlikely(ret)) {
 				dprintk("%s bl_mark_sectors_init fail %d\n",
 					__func__, ret);
@@ -581,6 +617,19 @@
 				wdata->pnfs_error = ret;
 				goto out;
 			}
+			if (likely(!bl_push_one_short_extent(be->be_inval)))
+				par->bse_count++;
+			else {
+				end_page_writeback(page);
+				page_cache_release(page);
+				wdata->pnfs_error = -ENOMEM;
+				goto out;
+			}
+			/* FIXME: This should be done in bi_end_io */
+			mark_extents_written(BLK_LSEG2EXT(wdata->lseg),
+					     page->index << PAGE_CACHE_SHIFT,
+					     PAGE_CACHE_SIZE);
+
 			bio = bl_add_page_to_bio(bio, npg_zero, WRITE,
 						 isect, page, be,
 						 bl_end_io_write_zero, par);
@@ -589,10 +638,6 @@
 				bio = NULL;
 				goto out;
 			}
-			/* FIXME: This should be done in bi_end_io */
-			mark_extents_written(BLK_LSEG2EXT(wdata->lseg),
-					     page->index << PAGE_CACHE_SHIFT,
-					     PAGE_CACHE_SIZE);
 next_page:
 			isect += PAGE_CACHE_SECTORS;
 			extent_length -= PAGE_CACHE_SECTORS;
@@ -616,13 +661,21 @@
 				wdata->pnfs_error = -EINVAL;
 				goto out;
 			}
+			if (be->be_state == PNFS_BLOCK_INVALID_DATA) {
+				if (likely(!bl_push_one_short_extent(
+								be->be_inval)))
+					par->bse_count++;
+				else {
+					wdata->pnfs_error = -ENOMEM;
+					goto out;
+				}
+			}
 			extent_length = be->be_length -
 			    (isect - be->be_f_offset);
 		}
 		if (be->be_state == PNFS_BLOCK_INVALID_DATA) {
 			ret = bl_mark_sectors_init(be->be_inval, isect,
-						       PAGE_CACHE_SECTORS,
-						       NULL);
+						       PAGE_CACHE_SECTORS);
 			if (unlikely(ret)) {
 				dprintk("%s bl_mark_sectors_init fail %d\n",
 					__func__, ret);
@@ -664,6 +717,10 @@
 	bl_submit_bio(WRITE, bio);
 	put_parallel(par);
 	return PNFS_ATTEMPTED;
+out_mds:
+	bl_put_extent(be);
+	kfree(par);
+	return PNFS_NOT_ATTEMPTED;
 }
 
 /* FIXME - range ignored */
@@ -690,11 +747,17 @@
 release_inval_marks(struct pnfs_inval_markings *marks)
 {
 	struct pnfs_inval_tracking *pos, *temp;
+	struct pnfs_block_short_extent *se, *stemp;
 
 	list_for_each_entry_safe(pos, temp, &marks->im_tree.mtt_stub, it_link) {
 		list_del(&pos->it_link);
 		kfree(pos);
 	}
+
+	list_for_each_entry_safe(se, stemp, &marks->im_extents, bse_node) {
+		list_del(&se->bse_node);
+		kfree(se);
+	}
 	return;
 }
 
@@ -779,16 +842,13 @@
 static void free_blk_mountid(struct block_mount_id *mid)
 {
 	if (mid) {
-		struct pnfs_block_dev *dev;
-		spin_lock(&mid->bm_lock);
-		while (!list_empty(&mid->bm_devlist)) {
-			dev = list_first_entry(&mid->bm_devlist,
-					       struct pnfs_block_dev,
-					       bm_node);
+		struct pnfs_block_dev *dev, *tmp;
+
+		/* No need to take bm_lock as we are last user freeing bm_devlist */
+		list_for_each_entry_safe(dev, tmp, &mid->bm_devlist, bm_node) {
 			list_del(&dev->bm_node);
 			bl_free_block_dev(dev);
 		}
-		spin_unlock(&mid->bm_lock);
 		kfree(mid);
 	}
 }
diff --git a/fs/nfs/blocklayout/blocklayout.h b/fs/nfs/blocklayout/blocklayout.h
index 42acf7e..e31a2df 100644
--- a/fs/nfs/blocklayout/blocklayout.h
+++ b/fs/nfs/blocklayout/blocklayout.h
@@ -70,6 +70,7 @@
 	spinlock_t	im_lock;
 	struct my_tree	im_tree;	/* Sectors that need LAYOUTCOMMIT */
 	sector_t	im_block_size;	/* Server blocksize in sectors */
+	struct list_head im_extents;	/* Short extents for INVAL->RW conversion */
 };
 
 struct pnfs_inval_tracking {
@@ -105,6 +106,7 @@
 {
 	spin_lock_init(&marks->im_lock);
 	INIT_LIST_HEAD(&marks->im_tree.mtt_stub);
+	INIT_LIST_HEAD(&marks->im_extents);
 	marks->im_block_size = blocksize;
 	marks->im_tree.mtt_step_size = min((sector_t)PAGE_CACHE_SECTORS,
 					   blocksize);
@@ -186,8 +188,7 @@
 bl_find_get_extent(struct pnfs_block_layout *bl, sector_t isect,
 		struct pnfs_block_extent **cow_read);
 int bl_mark_sectors_init(struct pnfs_inval_markings *marks,
-			     sector_t offset, sector_t length,
-			     sector_t **pages);
+			     sector_t offset, sector_t length);
 void bl_put_extent(struct pnfs_block_extent *be);
 struct pnfs_block_extent *bl_alloc_extent(void);
 int bl_is_sector_init(struct pnfs_inval_markings *marks, sector_t isect);
@@ -200,6 +201,11 @@
 int bl_add_merge_extent(struct pnfs_block_layout *bl,
 			 struct pnfs_block_extent *new);
 int bl_mark_for_commit(struct pnfs_block_extent *be,
-			sector_t offset, sector_t length);
+			sector_t offset, sector_t length,
+			struct pnfs_block_short_extent *new);
+int bl_push_one_short_extent(struct pnfs_inval_markings *marks);
+struct pnfs_block_short_extent *
+bl_pop_one_short_extent(struct pnfs_inval_markings *marks);
+void bl_free_short_extents(struct pnfs_inval_markings *marks, int num_to_free);
 
 #endif /* FS_NFS_NFS4BLOCKLAYOUT_H */
diff --git a/fs/nfs/blocklayout/extents.c b/fs/nfs/blocklayout/extents.c
index 19fa7b0..1abac09 100644
--- a/fs/nfs/blocklayout/extents.c
+++ b/fs/nfs/blocklayout/extents.c
@@ -110,13 +110,7 @@
 		return 0;
 	} else {
 		struct pnfs_inval_tracking *new;
-		if (storage)
-			new = storage;
-		else {
-			new = kmalloc(sizeof(*new), GFP_NOFS);
-			if (!new)
-				return -ENOMEM;
-		}
+		new = storage;
 		new->it_sector = s;
 		new->it_tags = (1 << tag);
 		list_add(&new->it_link, &pos->it_link);
@@ -139,11 +133,13 @@
 }
 
 /* Ensure that future operations on given range of tree will not malloc */
-static int _preload_range(struct my_tree *tree, u64 offset, u64 length)
+static int _preload_range(struct pnfs_inval_markings *marks,
+		u64 offset, u64 length)
 {
 	u64 start, end, s;
 	int count, i, used = 0, status = -ENOMEM;
 	struct pnfs_inval_tracking **storage;
+	struct my_tree  *tree = &marks->im_tree;
 
 	dprintk("%s(%llu, %llu) enter\n", __func__, offset, length);
 	start = normalize(offset, tree->mtt_step_size);
@@ -161,12 +157,11 @@
 			goto out_cleanup;
 	}
 
-	/* Now need lock - HOW??? */
-
+	spin_lock_bh(&marks->im_lock);
 	for (s = start; s < end; s += tree->mtt_step_size)
 		used += _add_entry(tree, s, INTERNAL_EXISTS, storage[used]);
+	spin_unlock_bh(&marks->im_lock);
 
-	/* Unlock - HOW??? */
 	status = 0;
 
  out_cleanup:
@@ -179,41 +174,14 @@
 	return status;
 }
 
-static void set_needs_init(sector_t *array, sector_t offset)
-{
-	sector_t *p = array;
-
-	dprintk("%s enter\n", __func__);
-	if (!p)
-		return;
-	while (*p < offset)
-		p++;
-	if (*p == offset)
-		return;
-	else if (*p == ~0) {
-		*p++ = offset;
-		*p = ~0;
-		return;
-	} else {
-		sector_t *save = p;
-		dprintk("%s Adding %llu\n", __func__, (u64)offset);
-		while (*p != ~0)
-			p++;
-		p++;
-		memmove(save + 1, save, (char *)p - (char *)save);
-		*save = offset;
-		return;
-	}
-}
-
 /* We are relying on page lock to serialize this */
 int bl_is_sector_init(struct pnfs_inval_markings *marks, sector_t isect)
 {
 	int rv;
 
-	spin_lock(&marks->im_lock);
+	spin_lock_bh(&marks->im_lock);
 	rv = _has_tag(&marks->im_tree, isect, EXTENT_INITIALIZED);
-	spin_unlock(&marks->im_lock);
+	spin_unlock_bh(&marks->im_lock);
 	return rv;
 }
 
@@ -253,78 +221,39 @@
 {
 	int rv;
 
-	spin_lock(&marks->im_lock);
+	spin_lock_bh(&marks->im_lock);
 	rv = _range_has_tag(&marks->im_tree, start, end, EXTENT_WRITTEN);
-	spin_unlock(&marks->im_lock);
+	spin_unlock_bh(&marks->im_lock);
 	return rv;
 }
 
 /* Marks sectors in [offest, offset_length) as having been initialized.
  * All lengths are step-aligned, where step is min(pagesize, blocksize).
- * Notes where partial block is initialized, and helps prepare it for
- * complete initialization later.
+ * Currently assumes offset is page-aligned
  */
-/* Currently assumes offset is page-aligned */
 int bl_mark_sectors_init(struct pnfs_inval_markings *marks,
-			     sector_t offset, sector_t length,
-			     sector_t **pages)
+			     sector_t offset, sector_t length)
 {
-	sector_t s, start, end;
-	sector_t *array = NULL; /* Pages to mark */
+	sector_t start, end;
 
 	dprintk("%s(offset=%llu,len=%llu) enter\n",
 		__func__, (u64)offset, (u64)length);
-	s = max((sector_t) 3,
-		2 * (marks->im_block_size / (PAGE_CACHE_SECTORS)));
-	dprintk("%s set max=%llu\n", __func__, (u64)s);
-	if (pages) {
-		array = kmalloc(s * sizeof(sector_t), GFP_NOFS);
-		if (!array)
-			goto outerr;
-		array[0] = ~0;
-	}
 
 	start = normalize(offset, marks->im_block_size);
 	end = normalize_up(offset + length, marks->im_block_size);
-	if (_preload_range(&marks->im_tree, start, end - start))
+	if (_preload_range(marks, start, end - start))
 		goto outerr;
 
-	spin_lock(&marks->im_lock);
-
-	for (s = normalize_up(start, PAGE_CACHE_SECTORS);
-	     s < offset; s += PAGE_CACHE_SECTORS) {
-		dprintk("%s pre-area pages\n", __func__);
-		/* Portion of used block is not initialized */
-		if (!_has_tag(&marks->im_tree, s, EXTENT_INITIALIZED))
-			set_needs_init(array, s);
-	}
+	spin_lock_bh(&marks->im_lock);
 	if (_set_range(&marks->im_tree, EXTENT_INITIALIZED, offset, length))
 		goto out_unlock;
-	for (s = normalize_up(offset + length, PAGE_CACHE_SECTORS);
-	     s < end; s += PAGE_CACHE_SECTORS) {
-		dprintk("%s post-area pages\n", __func__);
-		if (!_has_tag(&marks->im_tree, s, EXTENT_INITIALIZED))
-			set_needs_init(array, s);
-	}
+	spin_unlock_bh(&marks->im_lock);
 
-	spin_unlock(&marks->im_lock);
-
-	if (pages) {
-		if (array[0] == ~0) {
-			kfree(array);
-			*pages = NULL;
-		} else
-			*pages = array;
-	}
 	return 0;
 
- out_unlock:
-	spin_unlock(&marks->im_lock);
- outerr:
-	if (pages) {
-		kfree(array);
-		*pages = NULL;
-	}
+out_unlock:
+	spin_unlock_bh(&marks->im_lock);
+outerr:
 	return -ENOMEM;
 }
 
@@ -338,9 +267,9 @@
 
 	dprintk("%s(offset=%llu,len=%llu) enter\n", __func__,
 		(u64)offset, (u64)length);
-	spin_lock(&marks->im_lock);
+	spin_lock_bh(&marks->im_lock);
 	status = _set_range(&marks->im_tree, EXTENT_WRITTEN, offset, length);
-	spin_unlock(&marks->im_lock);
+	spin_unlock_bh(&marks->im_lock);
 	return status;
 }
 
@@ -440,20 +369,18 @@
 
 /* Note the range described by offset, length is guaranteed to be contained
  * within be.
+ * new will be freed, either by this function or add_to_commitlist if they
+ * decide not to use it, or after LAYOUTCOMMIT uses it in the commitlist.
  */
 int bl_mark_for_commit(struct pnfs_block_extent *be,
-		    sector_t offset, sector_t length)
+		    sector_t offset, sector_t length,
+		    struct pnfs_block_short_extent *new)
 {
 	sector_t new_end, end = offset + length;
-	struct pnfs_block_short_extent *new;
 	struct pnfs_block_layout *bl = container_of(be->be_inval,
 						    struct pnfs_block_layout,
 						    bl_inval);
 
-	new = kmalloc(sizeof(*new), GFP_NOFS);
-	if (!new)
-		return -ENOMEM;
-
 	mark_written_sectors(be->be_inval, offset, length);
 	/* We want to add the range to commit list, but it must be
 	 * block-normalized, and verified that the normalized range has
@@ -483,9 +410,6 @@
 	new->bse_mdev = be->be_mdev;
 
 	spin_lock(&bl->bl_ext_lock);
-	/* new will be freed, either by add_to_commitlist if it decides not
-	 * to use it, or after LAYOUTCOMMIT uses it in the commitlist.
-	 */
 	add_to_commitlist(bl, new);
 	spin_unlock(&bl->bl_ext_lock);
 	return 0;
@@ -933,3 +857,53 @@
 		}
 	}
 }
+
+int bl_push_one_short_extent(struct pnfs_inval_markings *marks)
+{
+	struct pnfs_block_short_extent *new;
+
+	new = kmalloc(sizeof(*new), GFP_NOFS);
+	if (unlikely(!new))
+		return -ENOMEM;
+
+	spin_lock_bh(&marks->im_lock);
+	list_add(&new->bse_node, &marks->im_extents);
+	spin_unlock_bh(&marks->im_lock);
+
+	return 0;
+}
+
+struct pnfs_block_short_extent *
+bl_pop_one_short_extent(struct pnfs_inval_markings *marks)
+{
+	struct pnfs_block_short_extent *rv = NULL;
+
+	spin_lock_bh(&marks->im_lock);
+	if (!list_empty(&marks->im_extents)) {
+		rv = list_entry((&marks->im_extents)->next,
+				struct pnfs_block_short_extent, bse_node);
+		list_del_init(&rv->bse_node);
+	}
+	spin_unlock_bh(&marks->im_lock);
+
+	return rv;
+}
+
+void bl_free_short_extents(struct pnfs_inval_markings *marks, int num_to_free)
+{
+	struct pnfs_block_short_extent *se = NULL, *tmp;
+
+	if (num_to_free <= 0)
+		return;
+
+	spin_lock(&marks->im_lock);
+	list_for_each_entry_safe(se, tmp, &marks->im_extents, bse_node) {
+		list_del(&se->bse_node);
+		kfree(se);
+		if (--num_to_free == 0)
+			break;
+	}
+	spin_unlock(&marks->im_lock);
+
+	BUG_ON(num_to_free > 0);
+}
diff --git a/fs/nfs/callback.h b/fs/nfs/callback.h
index 07df5f1..c89d3b9 100644
--- a/fs/nfs/callback.h
+++ b/fs/nfs/callback.h
@@ -162,7 +162,7 @@
 	};
 };
 
-extern unsigned nfs4_callback_layoutrecall(
+extern __be32 nfs4_callback_layoutrecall(
 	struct cb_layoutrecallargs *args,
 	void *dummy, struct cb_process_state *cps);
 
diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c
index 726e59a..d50b274 100644
--- a/fs/nfs/callback_xdr.c
+++ b/fs/nfs/callback_xdr.c
@@ -305,6 +305,10 @@
 	n = ntohl(*p++);
 	if (n <= 0)
 		goto out;
+	if (n > ULONG_MAX / sizeof(*args->devs)) {
+		status = htonl(NFS4ERR_BADXDR);
+		goto out;
+	}
 
 	args->devs = kmalloc(n * sizeof(*args->devs), GFP_KERNEL);
 	if (!args->devs) {
diff --git a/fs/nfs/nfs4filelayoutdev.c b/fs/nfs/nfs4filelayoutdev.c
index ed388aa..8ae9190 100644
--- a/fs/nfs/nfs4filelayoutdev.c
+++ b/fs/nfs/nfs4filelayoutdev.c
@@ -382,7 +382,7 @@
 {
 	struct nfs4_pnfs_ds_addr *da = NULL;
 	char *buf, *portstr;
-	u32 port;
+	__be16 port;
 	int nlen, rlen;
 	int tmp[2];
 	__be32 *p;
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 75366dc..f0c849c 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -3587,7 +3587,7 @@
 		res.acl_flags |= NFS4_ACL_LEN_REQUEST;
 	resp_buf = page_address(pages[0]);
 
-	dprintk("%s  buf %p buflen %ld npages %d args.acl_len %ld\n",
+	dprintk("%s  buf %p buflen %zu npages %d args.acl_len %zu\n",
 		__func__, buf, buflen, npages, args.acl_len);
 	ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode),
 			     &msg, &args.seq_args, &res.seq_res, 0);
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 5485a53..9cde9edf 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -198,65 +198,7 @@
 	return result;
 }
 
-static struct mm_struct *__check_mem_permission(struct task_struct *task)
-{
-	struct mm_struct *mm;
-
-	mm = get_task_mm(task);
-	if (!mm)
-		return ERR_PTR(-EINVAL);
-
-	/*
-	 * A task can always look at itself, in case it chooses
-	 * to use system calls instead of load instructions.
-	 */
-	if (task == current)
-		return mm;
-
-	/*
-	 * If current is actively ptrace'ing, and would also be
-	 * permitted to freshly attach with ptrace now, permit it.
-	 */
-	if (task_is_stopped_or_traced(task)) {
-		int match;
-		rcu_read_lock();
-		match = (ptrace_parent(task) == current);
-		rcu_read_unlock();
-		if (match && ptrace_may_access(task, PTRACE_MODE_ATTACH))
-			return mm;
-	}
-
-	/*
-	 * No one else is allowed.
-	 */
-	mmput(mm);
-	return ERR_PTR(-EPERM);
-}
-
-/*
- * If current may access user memory in @task return a reference to the
- * corresponding mm, otherwise ERR_PTR.
- */
-static struct mm_struct *check_mem_permission(struct task_struct *task)
-{
-	struct mm_struct *mm;
-	int err;
-
-	/*
-	 * Avoid racing if task exec's as we might get a new mm but validate
-	 * against old credentials.
-	 */
-	err = mutex_lock_killable(&task->signal->cred_guard_mutex);
-	if (err)
-		return ERR_PTR(err);
-
-	mm = __check_mem_permission(task);
-	mutex_unlock(&task->signal->cred_guard_mutex);
-
-	return mm;
-}
-
-struct mm_struct *mm_for_maps(struct task_struct *task)
+static struct mm_struct *mm_access(struct task_struct *task, unsigned int mode)
 {
 	struct mm_struct *mm;
 	int err;
@@ -267,7 +209,7 @@
 
 	mm = get_task_mm(task);
 	if (mm && mm != current->mm &&
-			!ptrace_may_access(task, PTRACE_MODE_READ)) {
+			!ptrace_may_access(task, mode)) {
 		mmput(mm);
 		mm = ERR_PTR(-EACCES);
 	}
@@ -276,6 +218,11 @@
 	return mm;
 }
 
+struct mm_struct *mm_for_maps(struct task_struct *task)
+{
+	return mm_access(task, PTRACE_MODE_READ);
+}
+
 static int proc_pid_cmdline(struct task_struct *task, char * buffer)
 {
 	int res = 0;
@@ -752,38 +699,39 @@
 
 static int mem_open(struct inode* inode, struct file* file)
 {
-	file->private_data = (void*)((long)current->self_exec_id);
+	struct task_struct *task = get_proc_task(file->f_path.dentry->d_inode);
+	struct mm_struct *mm;
+
+	if (!task)
+		return -ESRCH;
+
+	mm = mm_access(task, PTRACE_MODE_ATTACH);
+	put_task_struct(task);
+
+	if (IS_ERR(mm))
+		return PTR_ERR(mm);
+
 	/* OK to pass negative loff_t, we can catch out-of-range */
 	file->f_mode |= FMODE_UNSIGNED_OFFSET;
+	file->private_data = mm;
+
 	return 0;
 }
 
 static ssize_t mem_read(struct file * file, char __user * buf,
 			size_t count, loff_t *ppos)
 {
-	struct task_struct *task = get_proc_task(file->f_path.dentry->d_inode);
+	int ret;
 	char *page;
 	unsigned long src = *ppos;
-	int ret = -ESRCH;
-	struct mm_struct *mm;
+	struct mm_struct *mm = file->private_data;
 
-	if (!task)
-		goto out_no_task;
+	if (!mm)
+		return 0;
 
-	ret = -ENOMEM;
 	page = (char *)__get_free_page(GFP_TEMPORARY);
 	if (!page)
-		goto out;
-
-	mm = check_mem_permission(task);
-	ret = PTR_ERR(mm);
-	if (IS_ERR(mm))
-		goto out_free;
-
-	ret = -EIO;
- 
-	if (file->private_data != (void*)((long)current->self_exec_id))
-		goto out_put;
+		return -ENOMEM;
 
 	ret = 0;
  
@@ -810,13 +758,7 @@
 	}
 	*ppos = src;
 
-out_put:
-	mmput(mm);
-out_free:
 	free_page((unsigned long) page);
-out:
-	put_task_struct(task);
-out_no_task:
 	return ret;
 }
 
@@ -825,27 +767,15 @@
 {
 	int copied;
 	char *page;
-	struct task_struct *task = get_proc_task(file->f_path.dentry->d_inode);
 	unsigned long dst = *ppos;
-	struct mm_struct *mm;
+	struct mm_struct *mm = file->private_data;
 
-	copied = -ESRCH;
-	if (!task)
-		goto out_no_task;
+	if (!mm)
+		return 0;
 
-	copied = -ENOMEM;
 	page = (char *)__get_free_page(GFP_TEMPORARY);
 	if (!page)
-		goto out_task;
-
-	mm = check_mem_permission(task);
-	copied = PTR_ERR(mm);
-	if (IS_ERR(mm))
-		goto out_free;
-
-	copied = -EIO;
-	if (file->private_data != (void *)((long)current->self_exec_id))
-		goto out_mm;
+		return -ENOMEM;
 
 	copied = 0;
 	while (count > 0) {
@@ -869,13 +799,7 @@
 	}
 	*ppos = dst;
 
-out_mm:
-	mmput(mm);
-out_free:
 	free_page((unsigned long) page);
-out_task:
-	put_task_struct(task);
-out_no_task:
 	return copied;
 }
 
@@ -895,11 +819,20 @@
 	return file->f_pos;
 }
 
+static int mem_release(struct inode *inode, struct file *file)
+{
+	struct mm_struct *mm = file->private_data;
+
+	mmput(mm);
+	return 0;
+}
+
 static const struct file_operations proc_mem_operations = {
 	.llseek		= mem_lseek,
 	.read		= mem_read,
 	.write		= mem_write,
 	.open		= mem_open,
+	.release	= mem_release,
 };
 
 static ssize_t environ_read(struct file *file, char __user *buf,
@@ -1199,9 +1132,6 @@
 	ssize_t length;
 	uid_t loginuid;
 
-	if (!capable(CAP_AUDIT_CONTROL))
-		return -EPERM;
-
 	rcu_read_lock();
 	if (current != pid_task(proc_pid(inode), PIDTYPE_PID)) {
 		rcu_read_unlock();
@@ -1230,7 +1160,7 @@
 		goto out_free_page;
 
 	}
-	length = audit_set_loginuid(current, loginuid);
+	length = audit_set_loginuid(loginuid);
 	if (likely(length == 0))
 		length = count;
 
diff --git a/fs/qnx4/inode.c b/fs/qnx4/inode.c
index 2bfd987..6b00954 100644
--- a/fs/qnx4/inode.c
+++ b/fs/qnx4/inode.c
@@ -179,47 +179,33 @@
 	struct qnx4_inode_entry *rootdir;
 	int rd, rl;
 	int i, j;
-	int found = 0;
 
-	if (*(qnx4_sb(sb)->sb->RootDir.di_fname) != '/') {
+	if (*(qnx4_sb(sb)->sb->RootDir.di_fname) != '/')
 		return "no qnx4 filesystem (no root dir).";
-	} else {
-		QNX4DEBUG((KERN_NOTICE "QNX4 filesystem found on dev %s.\n", sb->s_id));
-		rd = le32_to_cpu(qnx4_sb(sb)->sb->RootDir.di_first_xtnt.xtnt_blk) - 1;
-		rl = le32_to_cpu(qnx4_sb(sb)->sb->RootDir.di_first_xtnt.xtnt_size);
-		for (j = 0; j < rl; j++) {
-			bh = sb_bread(sb, rd + j);	/* root dir, first block */
-			if (bh == NULL) {
-				return "unable to read root entry.";
-			}
-			for (i = 0; i < QNX4_INODES_PER_BLOCK; i++) {
-				rootdir = (struct qnx4_inode_entry *) (bh->b_data + i * QNX4_DIR_ENTRY_SIZE);
-				if (rootdir->di_fname != NULL) {
-					QNX4DEBUG((KERN_INFO "rootdir entry found : [%s]\n", rootdir->di_fname));
-					if (!strcmp(rootdir->di_fname,
-						    QNX4_BMNAME)) {
-						found = 1;
-						qnx4_sb(sb)->BitMap = kmemdup(rootdir,
-									      sizeof(struct qnx4_inode_entry),
-									      GFP_KERNEL);
-						if (!qnx4_sb(sb)->BitMap) {
-							brelse (bh);
-							return "not enough memory for bitmap inode";
-						}/* keep bitmap inode known */
-						break;
-					}
-				}
-			}
+	QNX4DEBUG((KERN_NOTICE "QNX4 filesystem found on dev %s.\n", sb->s_id));
+	rd = le32_to_cpu(qnx4_sb(sb)->sb->RootDir.di_first_xtnt.xtnt_blk) - 1;
+	rl = le32_to_cpu(qnx4_sb(sb)->sb->RootDir.di_first_xtnt.xtnt_size);
+	for (j = 0; j < rl; j++) {
+		bh = sb_bread(sb, rd + j);	/* root dir, first block */
+		if (bh == NULL)
+			return "unable to read root entry.";
+		rootdir = (struct qnx4_inode_entry *) bh->b_data;
+		for (i = 0; i < QNX4_INODES_PER_BLOCK; i++, rootdir++) {
+			QNX4DEBUG((KERN_INFO "rootdir entry found : [%s]\n", rootdir->di_fname));
+			if (strcmp(rootdir->di_fname, QNX4_BMNAME) != 0)
+				continue;
+			qnx4_sb(sb)->BitMap = kmemdup(rootdir,
+						      sizeof(struct qnx4_inode_entry),
+						      GFP_KERNEL);
 			brelse(bh);
-			if (found != 0) {
-				break;
-			}
+			if (!qnx4_sb(sb)->BitMap)
+				return "not enough memory for bitmap inode";
+			/* keep bitmap inode known */
+			return NULL;
 		}
-		if (found == 0) {
-			return "bitmap file not found.";
-		}
+		brelse(bh);
 	}
-	return NULL;
+	return "bitmap file not found.";
 }
 
 static int qnx4_fill_super(struct super_block *s, void *data, int silent)
@@ -270,7 +256,7 @@
 	if (IS_ERR(root)) {
 		printk(KERN_ERR "qnx4: get inode failed\n");
 		ret = PTR_ERR(root);
- 		goto out;
+ 		goto outb;
  	}
 
 	ret = -ENOMEM;
@@ -283,6 +269,8 @@
 
       outi:
 	iput(root);
+      outb:
+	kfree(qs->BitMap);
       out:
 	brelse(bh);
       outnobh:
diff --git a/fs/super.c b/fs/super.c
index de41e1e..6015c02 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -1186,6 +1186,8 @@
 			printk(KERN_ERR
 				"VFS:Filesystem freeze failed\n");
 			sb->s_frozen = SB_UNFROZEN;
+			smp_wmb();
+			wake_up(&sb->s_wait_unfrozen);
 			deactivate_locked_super(sb);
 			return ret;
 		}
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index 574d4ee..74b9baf 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -111,8 +111,7 @@
 	xfs_fsize_t		bsize;
 
 	bsize = ioend->io_offset + ioend->io_size;
-	isize = MAX(ip->i_size, ip->i_new_size);
-	isize = MIN(isize, bsize);
+	isize = MIN(i_size_read(VFS_I(ip)), bsize);
 	return isize > ip->i_d.di_size ? isize : 0;
 }
 
@@ -126,11 +125,7 @@
 }
 
 /*
- * Update on-disk file size now that data has been written to disk.  The
- * current in-memory file size is i_size.  If a write is beyond eof i_new_size
- * will be the intended file size until i_size is updated.  If this write does
- * not extend all the way to the valid file size then restrict this update to
- * the end of the write.
+ * Update on-disk file size now that data has been written to disk.
  *
  * This function does not block as blocking on the inode lock in IO completion
  * can lead to IO completion order dependency deadlocks.. If it can't get the
@@ -1279,6 +1274,15 @@
 	struct xfs_ioend	*ioend = iocb->private;
 
 	/*
+	 * While the generic direct I/O code updates the inode size, it does
+	 * so only after the end_io handler is called, which means our
+	 * end_io handler thinks the on-disk size is outside the in-core
+	 * size.  To prevent this just update it a little bit earlier here.
+	 */
+	if (offset + size > i_size_read(ioend->io_inode))
+		i_size_write(ioend->io_inode, offset + size);
+
+	/*
 	 * blockdev_direct_IO can return an error even after the I/O
 	 * completion handler was called.  Thus we need to protect
 	 * against double-freeing.
@@ -1340,12 +1344,11 @@
 
 	if (to > inode->i_size) {
 		/*
-		 * punch out the delalloc blocks we have already allocated. We
-		 * don't call xfs_setattr() to do this as we may be in the
-		 * middle of a multi-iovec write and so the vfs inode->i_size
-		 * will not match the xfs ip->i_size and so it will zero too
-		 * much. Hence we jus truncate the page cache to zero what is
-		 * necessary and punch the delalloc blocks directly.
+		 * Punch out the delalloc blocks we have already allocated.
+		 *
+		 * Don't bother with xfs_setattr given that nothing can have
+		 * made it to disk yet as the page is still locked at this
+		 * point.
 		 */
 		struct xfs_inode	*ip = XFS_I(inode);
 		xfs_fileoff_t		start_fsb;
diff --git a/fs/xfs/xfs_attr.c b/fs/xfs/xfs_attr.c
index 1e5d97f..08b9ac6 100644
--- a/fs/xfs/xfs_attr.c
+++ b/fs/xfs/xfs_attr.c
@@ -827,10 +827,6 @@
 	if (error)
 		goto out;
 
-	/*
-	 * Commit the last in the sequence of transactions.
-	 */
-	xfs_trans_log_inode(trans, dp, XFS_ILOG_CORE);
 	error = xfs_trans_commit(trans, XFS_TRANS_RELEASE_LOG_RES);
 	xfs_iunlock(dp, XFS_ILOCK_EXCL);
 
diff --git a/fs/xfs/xfs_attr_leaf.c b/fs/xfs/xfs_attr_leaf.c
index c1b55e5..d25eafd 100644
--- a/fs/xfs/xfs_attr_leaf.c
+++ b/fs/xfs/xfs_attr_leaf.c
@@ -271,10 +271,6 @@
 	dp = args->dp;
 	mp = dp->i_mount;
 	dp->i_d.di_forkoff = forkoff;
-	dp->i_df.if_ext_max =
-		XFS_IFORK_DSIZE(dp) / (uint)sizeof(xfs_bmbt_rec_t);
-	dp->i_afp->if_ext_max =
-		XFS_IFORK_ASIZE(dp) / (uint)sizeof(xfs_bmbt_rec_t);
 
 	ifp = dp->i_afp;
 	ASSERT(ifp->if_flags & XFS_IFINLINE);
@@ -326,7 +322,6 @@
 	ASSERT(ip->i_d.di_anextents == 0);
 	ASSERT(ip->i_afp == NULL);
 
-	ip->i_df.if_ext_max = XFS_IFORK_DSIZE(ip) / sizeof(xfs_bmbt_rec_t);
 	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
 }
 
@@ -389,10 +384,6 @@
 				(args->op_flags & XFS_DA_OP_ADDNAME) ||
 				!(mp->m_flags & XFS_MOUNT_ATTR2) ||
 				dp->i_d.di_format == XFS_DINODE_FMT_BTREE);
-		dp->i_afp->if_ext_max =
-			XFS_IFORK_ASIZE(dp) / (uint)sizeof(xfs_bmbt_rec_t);
-		dp->i_df.if_ext_max =
-			XFS_IFORK_DSIZE(dp) / (uint)sizeof(xfs_bmbt_rec_t);
 		xfs_trans_log_inode(args->trans, dp,
 					XFS_ILOG_CORE | XFS_ILOG_ADATA);
 	}
diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index d0ab788..188ef2f 100644
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -249,7 +249,27 @@
 }
 
 /*
-* Update the record referred to by cur to the value given
+ * Check if the inode needs to be converted to btree format.
+ */
+static inline bool xfs_bmap_needs_btree(struct xfs_inode *ip, int whichfork)
+{
+	return XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS &&
+		XFS_IFORK_NEXTENTS(ip, whichfork) >
+			XFS_IFORK_MAXEXT(ip, whichfork);
+}
+
+/*
+ * Check if the inode should be converted to extent format.
+ */
+static inline bool xfs_bmap_wants_extents(struct xfs_inode *ip, int whichfork)
+{
+	return XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE &&
+		XFS_IFORK_NEXTENTS(ip, whichfork) <=
+			XFS_IFORK_MAXEXT(ip, whichfork);
+}
+
+/*
+ * Update the record referred to by cur to the value given
  * by [off, bno, len, state].
  * This either works (return 0) or gets an EFSCORRUPTED error.
  */
@@ -683,8 +703,8 @@
 				goto done;
 			XFS_WANT_CORRUPTED_GOTO(i == 1, done);
 		}
-		if (bma->ip->i_d.di_format == XFS_DINODE_FMT_EXTENTS &&
-		    bma->ip->i_d.di_nextents > bma->ip->i_df.if_ext_max) {
+
+		if (xfs_bmap_needs_btree(bma->ip, XFS_DATA_FORK)) {
 			error = xfs_bmap_extents_to_btree(bma->tp, bma->ip,
 					bma->firstblock, bma->flist,
 					&bma->cur, 1, &tmp_rval, XFS_DATA_FORK);
@@ -767,8 +787,8 @@
 				goto done;
 			XFS_WANT_CORRUPTED_GOTO(i == 1, done);
 		}
-		if (bma->ip->i_d.di_format == XFS_DINODE_FMT_EXTENTS &&
-		    bma->ip->i_d.di_nextents > bma->ip->i_df.if_ext_max) {
+
+		if (xfs_bmap_needs_btree(bma->ip, XFS_DATA_FORK)) {
 			error = xfs_bmap_extents_to_btree(bma->tp, bma->ip,
 				bma->firstblock, bma->flist, &bma->cur, 1,
 				&tmp_rval, XFS_DATA_FORK);
@@ -836,8 +856,8 @@
 				goto done;
 			XFS_WANT_CORRUPTED_GOTO(i == 1, done);
 		}
-		if (bma->ip->i_d.di_format == XFS_DINODE_FMT_EXTENTS &&
-		    bma->ip->i_d.di_nextents > bma->ip->i_df.if_ext_max) {
+
+		if (xfs_bmap_needs_btree(bma->ip, XFS_DATA_FORK)) {
 			error = xfs_bmap_extents_to_btree(bma->tp, bma->ip,
 					bma->firstblock, bma->flist, &bma->cur,
 					1, &tmp_rval, XFS_DATA_FORK);
@@ -884,8 +904,7 @@
 	}
 
 	/* convert to a btree if necessary */
-	if (XFS_IFORK_FORMAT(bma->ip, XFS_DATA_FORK) == XFS_DINODE_FMT_EXTENTS &&
-	    XFS_IFORK_NEXTENTS(bma->ip, XFS_DATA_FORK) > ifp->if_ext_max) {
+	if (xfs_bmap_needs_btree(bma->ip, XFS_DATA_FORK)) {
 		int	tmp_logflags;	/* partial log flag return val */
 
 		ASSERT(bma->cur == NULL);
@@ -1421,8 +1440,7 @@
 	}
 
 	/* convert to a btree if necessary */
-	if (XFS_IFORK_FORMAT(ip, XFS_DATA_FORK) == XFS_DINODE_FMT_EXTENTS &&
-	    XFS_IFORK_NEXTENTS(ip, XFS_DATA_FORK) > ifp->if_ext_max) {
+	if (xfs_bmap_needs_btree(ip, XFS_DATA_FORK)) {
 		int	tmp_logflags;	/* partial log flag return val */
 
 		ASSERT(cur == NULL);
@@ -1812,8 +1830,7 @@
 	}
 
 	/* convert to a btree if necessary */
-	if (XFS_IFORK_FORMAT(bma->ip, whichfork) == XFS_DINODE_FMT_EXTENTS &&
-	    XFS_IFORK_NEXTENTS(bma->ip, whichfork) > ifp->if_ext_max) {
+	if (xfs_bmap_needs_btree(bma->ip, whichfork)) {
 		int	tmp_logflags;	/* partial log flag return val */
 
 		ASSERT(bma->cur == NULL);
@@ -3037,8 +3054,7 @@
 
 	ifp = XFS_IFORK_PTR(ip, whichfork);
 	ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS);
-	ASSERT(ifp->if_ext_max ==
-	       XFS_IFORK_SIZE(ip, whichfork) / (uint)sizeof(xfs_bmbt_rec_t));
+
 	/*
 	 * Make space in the inode incore.
 	 */
@@ -3184,13 +3200,8 @@
 	    ip->i_d.di_format != XFS_DINODE_FMT_BTREE) {
 		uint	dfl_forkoff = xfs_default_attroffset(ip) >> 3;
 
-		if (dfl_forkoff > ip->i_d.di_forkoff) {
+		if (dfl_forkoff > ip->i_d.di_forkoff)
 			ip->i_d.di_forkoff = dfl_forkoff;
-			ip->i_df.if_ext_max =
-				XFS_IFORK_DSIZE(ip) / sizeof(xfs_bmbt_rec_t);
-			ip->i_afp->if_ext_max =
-				XFS_IFORK_ASIZE(ip) / sizeof(xfs_bmbt_rec_t);
-		}
 	}
 }
 
@@ -3430,8 +3441,6 @@
 	int			error;		/* error return value */
 
 	ASSERT(XFS_IFORK_Q(ip) == 0);
-	ASSERT(ip->i_df.if_ext_max ==
-	       XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t));
 
 	mp = ip->i_mount;
 	ASSERT(!XFS_NOT_DQATTACHED(mp, ip));
@@ -3486,12 +3495,9 @@
 		error = XFS_ERROR(EINVAL);
 		goto error1;
 	}
-	ip->i_df.if_ext_max =
-		XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t);
+
 	ASSERT(ip->i_afp == NULL);
 	ip->i_afp = kmem_zone_zalloc(xfs_ifork_zone, KM_SLEEP);
-	ip->i_afp->if_ext_max =
-		XFS_IFORK_ASIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t);
 	ip->i_afp->if_flags = XFS_IFEXTENTS;
 	logflags = 0;
 	xfs_bmap_init(&flist, &firstblock);
@@ -3535,20 +3541,17 @@
 		} else
 			spin_unlock(&mp->m_sb_lock);
 	}
-	if ((error = xfs_bmap_finish(&tp, &flist, &committed)))
+
+	error = xfs_bmap_finish(&tp, &flist, &committed);
+	if (error)
 		goto error2;
-	error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
-	ASSERT(ip->i_df.if_ext_max ==
-	       XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t));
-	return error;
+	return xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
 error2:
 	xfs_bmap_cancel(&flist);
 error1:
 	xfs_iunlock(ip, XFS_ILOCK_EXCL);
 error0:
 	xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES|XFS_TRANS_ABORT);
-	ASSERT(ip->i_df.if_ext_max ==
-	       XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t));
 	return error;
 }
 
@@ -3994,11 +3997,8 @@
 	xfs_bmbt_irec_t	s;		/* internal version of extent */
 
 #ifndef DEBUG
-	if (whichfork == XFS_DATA_FORK) {
-		return S_ISREG(ip->i_d.di_mode) ?
-			(ip->i_size == ip->i_mount->m_sb.sb_blocksize) :
-			(ip->i_d.di_size == ip->i_mount->m_sb.sb_blocksize);
-	}
+	if (whichfork == XFS_DATA_FORK)
+		return XFS_ISIZE(ip) == ip->i_mount->m_sb.sb_blocksize;
 #endif	/* !DEBUG */
 	if (XFS_IFORK_NEXTENTS(ip, whichfork) != 1)
 		return 0;
@@ -4010,7 +4010,7 @@
 	xfs_bmbt_get_all(ep, &s);
 	rval = s.br_startoff == 0 && s.br_blockcount == 1;
 	if (rval && whichfork == XFS_DATA_FORK)
-		ASSERT(ip->i_size == ip->i_mount->m_sb.sb_blocksize);
+		ASSERT(XFS_ISIZE(ip) == ip->i_mount->m_sb.sb_blocksize);
 	return rval;
 }
 
@@ -4379,8 +4379,6 @@
 	XFS_STATS_INC(xs_blk_mapr);
 
 	ifp = XFS_IFORK_PTR(ip, whichfork);
-	ASSERT(ifp->if_ext_max ==
-	       XFS_IFORK_SIZE(ip, whichfork) / (uint)sizeof(xfs_bmbt_rec_t));
 
 	if (!(ifp->if_flags & XFS_IFEXTENTS)) {
 		error = xfs_iread_extents(NULL, ip, whichfork);
@@ -4871,8 +4869,6 @@
 		return XFS_ERROR(EIO);
 
 	ifp = XFS_IFORK_PTR(ip, whichfork);
-	ASSERT(ifp->if_ext_max ==
-	       XFS_IFORK_SIZE(ip, whichfork) / (uint)sizeof(xfs_bmbt_rec_t));
 
 	XFS_STATS_INC(xs_blk_mapw);
 
@@ -4981,8 +4977,7 @@
 	/*
 	 * Transform from btree to extents, give it cur.
 	 */
-	if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE &&
-	    XFS_IFORK_NEXTENTS(ip, whichfork) <= ifp->if_ext_max) {
+	if (xfs_bmap_wants_extents(ip, whichfork)) {
 		int		tmp_logflags = 0;
 
 		ASSERT(bma.cur);
@@ -4992,10 +4987,10 @@
 		if (error)
 			goto error0;
 	}
-	ASSERT(ifp->if_ext_max ==
-	       XFS_IFORK_SIZE(ip, whichfork) / (uint)sizeof(xfs_bmbt_rec_t));
+
 	ASSERT(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE ||
-	       XFS_IFORK_NEXTENTS(ip, whichfork) > ifp->if_ext_max);
+	       XFS_IFORK_NEXTENTS(ip, whichfork) >
+		XFS_IFORK_MAXEXT(ip, whichfork));
 	error = 0;
 error0:
 	/*
@@ -5095,8 +5090,7 @@
 
 	ASSERT(len > 0);
 	ASSERT(nexts >= 0);
-	ASSERT(ifp->if_ext_max ==
-	       XFS_IFORK_SIZE(ip, whichfork) / (uint)sizeof(xfs_bmbt_rec_t));
+
 	if (!(ifp->if_flags & XFS_IFEXTENTS) &&
 	    (error = xfs_iread_extents(tp, ip, whichfork)))
 		return error;
@@ -5322,7 +5316,8 @@
 		 */
 		if (!wasdel && xfs_trans_get_block_res(tp) == 0 &&
 		    XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS &&
-		    XFS_IFORK_NEXTENTS(ip, whichfork) >= ifp->if_ext_max &&
+		    XFS_IFORK_NEXTENTS(ip, whichfork) >= /* Note the >= */
+			XFS_IFORK_MAXEXT(ip, whichfork) &&
 		    del.br_startoff > got.br_startoff &&
 		    del.br_startoff + del.br_blockcount <
 		    got.br_startoff + got.br_blockcount) {
@@ -5353,13 +5348,11 @@
 		}
 	}
 	*done = bno == (xfs_fileoff_t)-1 || bno < start || lastx < 0;
-	ASSERT(ifp->if_ext_max ==
-	       XFS_IFORK_SIZE(ip, whichfork) / (uint)sizeof(xfs_bmbt_rec_t));
+
 	/*
 	 * Convert to a btree if necessary.
 	 */
-	if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS &&
-	    XFS_IFORK_NEXTENTS(ip, whichfork) > ifp->if_ext_max) {
+	if (xfs_bmap_needs_btree(ip, whichfork)) {
 		ASSERT(cur == NULL);
 		error = xfs_bmap_extents_to_btree(tp, ip, firstblock, flist,
 			&cur, 0, &tmp_logflags, whichfork);
@@ -5370,8 +5363,7 @@
 	/*
 	 * transform from btree to extents, give it cur
 	 */
-	else if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE &&
-		 XFS_IFORK_NEXTENTS(ip, whichfork) <= ifp->if_ext_max) {
+	else if (xfs_bmap_wants_extents(ip, whichfork)) {
 		ASSERT(cur != NULL);
 		error = xfs_bmap_btree_to_extents(tp, ip, cur, &tmp_logflags,
 			whichfork);
@@ -5382,8 +5374,6 @@
 	/*
 	 * transform from extents to local?
 	 */
-	ASSERT(ifp->if_ext_max ==
-	       XFS_IFORK_SIZE(ip, whichfork) / (uint)sizeof(xfs_bmbt_rec_t));
 	error = 0;
 error0:
 	/*
@@ -5434,7 +5424,7 @@
 	if (startblock == HOLESTARTBLOCK) {
 		mp = ip->i_mount;
 		out->bmv_block = -1;
-		fixlen = XFS_FSB_TO_BB(mp, XFS_B_TO_FSB(mp, ip->i_size));
+		fixlen = XFS_FSB_TO_BB(mp, XFS_B_TO_FSB(mp, XFS_ISIZE(ip)));
 		fixlen -= out->bmv_offset;
 		if (prealloced && out->bmv_offset + out->bmv_length == end) {
 			/* Came to hole at EOF. Trim it. */
@@ -5522,7 +5512,7 @@
 			fixlen = XFS_MAXIOFFSET(mp);
 		} else {
 			prealloced = 0;
-			fixlen = ip->i_size;
+			fixlen = XFS_ISIZE(ip);
 		}
 	}
 
@@ -5551,7 +5541,7 @@
 
 	xfs_ilock(ip, XFS_IOLOCK_SHARED);
 	if (whichfork == XFS_DATA_FORK && !(iflags & BMV_IF_DELALLOC)) {
-		if (ip->i_delayed_blks || ip->i_size > ip->i_d.di_size) {
+		if (ip->i_delayed_blks || XFS_ISIZE(ip) > ip->i_d.di_size) {
 			error = xfs_flush_pages(ip, 0, -1, 0, FI_REMAPF);
 			if (error)
 				goto out_unlock_iolock;
diff --git a/fs/xfs/xfs_dfrag.c b/fs/xfs/xfs_dfrag.c
index 654dc6f..dd974a5 100644
--- a/fs/xfs/xfs_dfrag.c
+++ b/fs/xfs/xfs_dfrag.c
@@ -163,12 +163,14 @@
 
 	/* Check temp in extent form to max in target */
 	if (tip->i_d.di_format == XFS_DINODE_FMT_EXTENTS &&
-	    XFS_IFORK_NEXTENTS(tip, XFS_DATA_FORK) > ip->i_df.if_ext_max)
+	    XFS_IFORK_NEXTENTS(tip, XFS_DATA_FORK) >
+			XFS_IFORK_MAXEXT(ip, XFS_DATA_FORK))
 		return EINVAL;
 
 	/* Check target in extent form to max in temp */
 	if (ip->i_d.di_format == XFS_DINODE_FMT_EXTENTS &&
-	    XFS_IFORK_NEXTENTS(ip, XFS_DATA_FORK) > tip->i_df.if_ext_max)
+	    XFS_IFORK_NEXTENTS(ip, XFS_DATA_FORK) >
+			XFS_IFORK_MAXEXT(tip, XFS_DATA_FORK))
 		return EINVAL;
 
 	/*
@@ -180,18 +182,25 @@
 	 * (a common defrag case) which will occur when the temp inode is in
 	 * extent format...
 	 */
-	if (tip->i_d.di_format == XFS_DINODE_FMT_BTREE &&
-	    ((XFS_IFORK_BOFF(ip) &&
-	      tip->i_df.if_broot_bytes > XFS_IFORK_BOFF(ip)) ||
-	     XFS_IFORK_NEXTENTS(tip, XFS_DATA_FORK) <= ip->i_df.if_ext_max))
-		return EINVAL;
+	if (tip->i_d.di_format == XFS_DINODE_FMT_BTREE) {
+		if (XFS_IFORK_BOFF(ip) &&
+		    tip->i_df.if_broot_bytes > XFS_IFORK_BOFF(ip))
+			return EINVAL;
+		if (XFS_IFORK_NEXTENTS(tip, XFS_DATA_FORK) <=
+		    XFS_IFORK_MAXEXT(ip, XFS_DATA_FORK))
+			return EINVAL;
+	}
 
 	/* Reciprocal target->temp btree format checks */
-	if (ip->i_d.di_format == XFS_DINODE_FMT_BTREE &&
-	    ((XFS_IFORK_BOFF(tip) &&
-	      ip->i_df.if_broot_bytes > XFS_IFORK_BOFF(tip)) ||
-	     XFS_IFORK_NEXTENTS(ip, XFS_DATA_FORK) <= tip->i_df.if_ext_max))
-		return EINVAL;
+	if (ip->i_d.di_format == XFS_DINODE_FMT_BTREE) {
+		if (XFS_IFORK_BOFF(tip) &&
+		    ip->i_df.if_broot_bytes > XFS_IFORK_BOFF(tip))
+			return EINVAL;
+
+		if (XFS_IFORK_NEXTENTS(ip, XFS_DATA_FORK) <=
+		    XFS_IFORK_MAXEXT(tip, XFS_DATA_FORK))
+			return EINVAL;
+	}
 
 	return 0;
 }
@@ -349,16 +358,6 @@
 	*tifp = *tempifp;	/* struct copy */
 
 	/*
-	 * Fix the in-memory data fork values that are dependent on the fork
-	 * offset in the inode. We can't assume they remain the same as attr2
-	 * has dynamic fork offsets.
-	 */
-	ifp->if_ext_max = XFS_IFORK_SIZE(ip, XFS_DATA_FORK) /
-					(uint)sizeof(xfs_bmbt_rec_t);
-	tifp->if_ext_max = XFS_IFORK_SIZE(tip, XFS_DATA_FORK) /
-					(uint)sizeof(xfs_bmbt_rec_t);
-
-	/*
 	 * Fix the on-disk inode values
 	 */
 	tmp = (__uint64_t)ip->i_d.di_nblocks;
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index f675f3d..7e5bc87 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -327,7 +327,7 @@
 				mp->m_rtdev_targp : mp->m_ddev_targp;
 		if ((iocb->ki_pos & target->bt_smask) ||
 		    (size & target->bt_smask)) {
-			if (iocb->ki_pos == ip->i_size)
+			if (iocb->ki_pos == i_size_read(inode))
 				return 0;
 			return -XFS_ERROR(EINVAL);
 		}
@@ -412,51 +412,6 @@
 	return ret;
 }
 
-STATIC void
-xfs_aio_write_isize_update(
-	struct inode	*inode,
-	loff_t		*ppos,
-	ssize_t		bytes_written)
-{
-	struct xfs_inode	*ip = XFS_I(inode);
-	xfs_fsize_t		isize = i_size_read(inode);
-
-	if (bytes_written > 0)
-		XFS_STATS_ADD(xs_write_bytes, bytes_written);
-
-	if (unlikely(bytes_written < 0 && bytes_written != -EFAULT &&
-					*ppos > isize))
-		*ppos = isize;
-
-	if (*ppos > ip->i_size) {
-		xfs_rw_ilock(ip, XFS_ILOCK_EXCL);
-		if (*ppos > ip->i_size)
-			ip->i_size = *ppos;
-		xfs_rw_iunlock(ip, XFS_ILOCK_EXCL);
-	}
-}
-
-/*
- * If this was a direct or synchronous I/O that failed (such as ENOSPC) then
- * part of the I/O may have been written to disk before the error occurred.  In
- * this case the on-disk file size may have been adjusted beyond the in-memory
- * file size and now needs to be truncated back.
- */
-STATIC void
-xfs_aio_write_newsize_update(
-	struct xfs_inode	*ip,
-	xfs_fsize_t		new_size)
-{
-	if (new_size == ip->i_new_size) {
-		xfs_rw_ilock(ip, XFS_ILOCK_EXCL);
-		if (new_size == ip->i_new_size)
-			ip->i_new_size = 0;
-		if (ip->i_d.di_size > ip->i_size)
-			ip->i_d.di_size = ip->i_size;
-		xfs_rw_iunlock(ip, XFS_ILOCK_EXCL);
-	}
-}
-
 /*
  * xfs_file_splice_write() does not use xfs_rw_ilock() because
  * generic_file_splice_write() takes the i_mutex itself. This, in theory,
@@ -475,7 +430,6 @@
 {
 	struct inode		*inode = outfilp->f_mapping->host;
 	struct xfs_inode	*ip = XFS_I(inode);
-	xfs_fsize_t		new_size;
 	int			ioflags = 0;
 	ssize_t			ret;
 
@@ -489,19 +443,12 @@
 
 	xfs_ilock(ip, XFS_IOLOCK_EXCL);
 
-	new_size = *ppos + count;
-
-	xfs_ilock(ip, XFS_ILOCK_EXCL);
-	if (new_size > ip->i_size)
-		ip->i_new_size = new_size;
-	xfs_iunlock(ip, XFS_ILOCK_EXCL);
-
 	trace_xfs_file_splice_write(ip, count, *ppos, ioflags);
 
 	ret = generic_file_splice_write(pipe, outfilp, ppos, count, flags);
+	if (ret > 0)
+		XFS_STATS_ADD(xs_write_bytes, ret);
 
-	xfs_aio_write_isize_update(inode, ppos, ret);
-	xfs_aio_write_newsize_update(ip, new_size);
 	xfs_iunlock(ip, XFS_IOLOCK_EXCL);
 	return ret;
 }
@@ -689,28 +636,26 @@
 /*
  * Common pre-write limit and setup checks.
  *
- * Returns with iolock held according to @iolock.
+ * Called with the iolocked held either shared and exclusive according to
+ * @iolock, and returns with it held.  Might upgrade the iolock to exclusive
+ * if called for a direct write beyond i_size.
  */
 STATIC ssize_t
 xfs_file_aio_write_checks(
 	struct file		*file,
 	loff_t			*pos,
 	size_t			*count,
-	xfs_fsize_t		*new_sizep,
 	int			*iolock)
 {
 	struct inode		*inode = file->f_mapping->host;
 	struct xfs_inode	*ip = XFS_I(inode);
-	xfs_fsize_t		new_size;
 	int			error = 0;
 
 	xfs_rw_ilock(ip, XFS_ILOCK_EXCL);
-	*new_sizep = 0;
 restart:
 	error = generic_write_checks(file, pos, count, S_ISBLK(inode->i_mode));
 	if (error) {
-		xfs_rw_iunlock(ip, XFS_ILOCK_EXCL | *iolock);
-		*iolock = 0;
+		xfs_rw_iunlock(ip, XFS_ILOCK_EXCL);
 		return error;
 	}
 
@@ -720,36 +665,21 @@
 	/*
 	 * If the offset is beyond the size of the file, we need to zero any
 	 * blocks that fall between the existing EOF and the start of this
-	 * write. There is no need to issue zeroing if another in-flght IO ends
-	 * at or before this one If zeronig is needed and we are currently
-	 * holding the iolock shared, we need to update it to exclusive which
-	 * involves dropping all locks and relocking to maintain correct locking
-	 * order. If we do this, restart the function to ensure all checks and
-	 * values are still valid.
+	 * write.  If zeroing is needed and we are currently holding the
+	 * iolock shared, we need to update it to exclusive which involves
+	 * dropping all locks and relocking to maintain correct locking order.
+	 * If we do this, restart the function to ensure all checks and values
+	 * are still valid.
 	 */
-	if ((ip->i_new_size && *pos > ip->i_new_size) ||
-	    (!ip->i_new_size && *pos > ip->i_size)) {
+	if (*pos > i_size_read(inode)) {
 		if (*iolock == XFS_IOLOCK_SHARED) {
 			xfs_rw_iunlock(ip, XFS_ILOCK_EXCL | *iolock);
 			*iolock = XFS_IOLOCK_EXCL;
 			xfs_rw_ilock(ip, XFS_ILOCK_EXCL | *iolock);
 			goto restart;
 		}
-		error = -xfs_zero_eof(ip, *pos, ip->i_size);
+		error = -xfs_zero_eof(ip, *pos, i_size_read(inode));
 	}
-
-	/*
-	 * If this IO extends beyond EOF, we may need to update ip->i_new_size.
-	 * We have already zeroed space beyond EOF (if necessary).  Only update
-	 * ip->i_new_size if this IO ends beyond any other in-flight writes.
-	 */
-	new_size = *pos + *count;
-	if (new_size > ip->i_size) {
-		if (new_size > ip->i_new_size)
-			ip->i_new_size = new_size;
-		*new_sizep = new_size;
-	}
-
 	xfs_rw_iunlock(ip, XFS_ILOCK_EXCL);
 	if (error)
 		return error;
@@ -794,9 +724,7 @@
 	const struct iovec	*iovp,
 	unsigned long		nr_segs,
 	loff_t			pos,
-	size_t			ocount,
-	xfs_fsize_t		*new_size,
-	int			*iolock)
+	size_t			ocount)
 {
 	struct file		*file = iocb->ki_filp;
 	struct address_space	*mapping = file->f_mapping;
@@ -806,10 +734,10 @@
 	ssize_t			ret = 0;
 	size_t			count = ocount;
 	int			unaligned_io = 0;
+	int			iolock;
 	struct xfs_buftarg	*target = XFS_IS_REALTIME_INODE(ip) ?
 					mp->m_rtdev_targp : mp->m_ddev_targp;
 
-	*iolock = 0;
 	if ((pos & target->bt_smask) || (count & target->bt_smask))
 		return -XFS_ERROR(EINVAL);
 
@@ -824,31 +752,31 @@
 	 * EOF zeroing cases and fill out the new inode size as appropriate.
 	 */
 	if (unaligned_io || mapping->nrpages)
-		*iolock = XFS_IOLOCK_EXCL;
+		iolock = XFS_IOLOCK_EXCL;
 	else
-		*iolock = XFS_IOLOCK_SHARED;
-	xfs_rw_ilock(ip, *iolock);
+		iolock = XFS_IOLOCK_SHARED;
+	xfs_rw_ilock(ip, iolock);
 
 	/*
 	 * Recheck if there are cached pages that need invalidate after we got
 	 * the iolock to protect against other threads adding new pages while
 	 * we were waiting for the iolock.
 	 */
-	if (mapping->nrpages && *iolock == XFS_IOLOCK_SHARED) {
-		xfs_rw_iunlock(ip, *iolock);
-		*iolock = XFS_IOLOCK_EXCL;
-		xfs_rw_ilock(ip, *iolock);
+	if (mapping->nrpages && iolock == XFS_IOLOCK_SHARED) {
+		xfs_rw_iunlock(ip, iolock);
+		iolock = XFS_IOLOCK_EXCL;
+		xfs_rw_ilock(ip, iolock);
 	}
 
-	ret = xfs_file_aio_write_checks(file, &pos, &count, new_size, iolock);
+	ret = xfs_file_aio_write_checks(file, &pos, &count, &iolock);
 	if (ret)
-		return ret;
+		goto out;
 
 	if (mapping->nrpages) {
 		ret = -xfs_flushinval_pages(ip, (pos & PAGE_CACHE_MASK), -1,
 							FI_REMAPF_LOCKED);
 		if (ret)
-			return ret;
+			goto out;
 	}
 
 	/*
@@ -857,15 +785,18 @@
 	 */
 	if (unaligned_io)
 		inode_dio_wait(inode);
-	else if (*iolock == XFS_IOLOCK_EXCL) {
+	else if (iolock == XFS_IOLOCK_EXCL) {
 		xfs_rw_ilock_demote(ip, XFS_IOLOCK_EXCL);
-		*iolock = XFS_IOLOCK_SHARED;
+		iolock = XFS_IOLOCK_SHARED;
 	}
 
 	trace_xfs_file_direct_write(ip, count, iocb->ki_pos, 0);
 	ret = generic_file_direct_write(iocb, iovp,
 			&nr_segs, pos, &iocb->ki_pos, count, ocount);
 
+out:
+	xfs_rw_iunlock(ip, iolock);
+
 	/* No fallback to buffered IO on errors for XFS. */
 	ASSERT(ret < 0 || ret == count);
 	return ret;
@@ -877,9 +808,7 @@
 	const struct iovec	*iovp,
 	unsigned long		nr_segs,
 	loff_t			pos,
-	size_t			ocount,
-	xfs_fsize_t		*new_size,
-	int			*iolock)
+	size_t			ocount)
 {
 	struct file		*file = iocb->ki_filp;
 	struct address_space	*mapping = file->f_mapping;
@@ -887,14 +816,14 @@
 	struct xfs_inode	*ip = XFS_I(inode);
 	ssize_t			ret;
 	int			enospc = 0;
+	int			iolock = XFS_IOLOCK_EXCL;
 	size_t			count = ocount;
 
-	*iolock = XFS_IOLOCK_EXCL;
-	xfs_rw_ilock(ip, *iolock);
+	xfs_rw_ilock(ip, iolock);
 
-	ret = xfs_file_aio_write_checks(file, &pos, &count, new_size, iolock);
+	ret = xfs_file_aio_write_checks(file, &pos, &count, &iolock);
 	if (ret)
-		return ret;
+		goto out;
 
 	/* We can write back this queue in page reclaim */
 	current->backing_dev_info = mapping->backing_dev_info;
@@ -908,13 +837,15 @@
 	 * page locks and retry *once*
 	 */
 	if (ret == -ENOSPC && !enospc) {
-		ret = -xfs_flush_pages(ip, 0, -1, 0, FI_NONE);
-		if (ret)
-			return ret;
 		enospc = 1;
-		goto write_retry;
+		ret = -xfs_flush_pages(ip, 0, -1, 0, FI_NONE);
+		if (!ret)
+			goto write_retry;
 	}
+
 	current->backing_dev_info = NULL;
+out:
+	xfs_rw_iunlock(ip, iolock);
 	return ret;
 }
 
@@ -930,9 +861,7 @@
 	struct inode		*inode = mapping->host;
 	struct xfs_inode	*ip = XFS_I(inode);
 	ssize_t			ret;
-	int			iolock;
 	size_t			ocount = 0;
-	xfs_fsize_t		new_size = 0;
 
 	XFS_STATS_INC(xs_write_calls);
 
@@ -951,33 +880,22 @@
 		return -EIO;
 
 	if (unlikely(file->f_flags & O_DIRECT))
-		ret = xfs_file_dio_aio_write(iocb, iovp, nr_segs, pos,
-						ocount, &new_size, &iolock);
+		ret = xfs_file_dio_aio_write(iocb, iovp, nr_segs, pos, ocount);
 	else
 		ret = xfs_file_buffered_aio_write(iocb, iovp, nr_segs, pos,
-						ocount, &new_size, &iolock);
+						  ocount);
 
-	xfs_aio_write_isize_update(inode, &iocb->ki_pos, ret);
+	if (ret > 0) {
+		ssize_t err;
 
-	if (ret <= 0)
-		goto out_unlock;
+		XFS_STATS_ADD(xs_write_bytes, ret);
 
-	/* Handle various SYNC-type writes */
-	if ((file->f_flags & O_DSYNC) || IS_SYNC(inode)) {
-		loff_t end = pos + ret - 1;
-		int error;
-
-		xfs_rw_iunlock(ip, iolock);
-		error = xfs_file_fsync(file, pos, end,
-				      (file->f_flags & __O_SYNC) ? 0 : 1);
-		xfs_rw_ilock(ip, iolock);
-		if (error)
-			ret = error;
+		/* Handle various SYNC-type writes */
+		err = generic_write_sync(file, pos, ret);
+		if (err < 0)
+			ret = err;
 	}
 
-out_unlock:
-	xfs_aio_write_newsize_update(ip, new_size);
-	xfs_rw_iunlock(ip, iolock);
 	return ret;
 }
 
diff --git a/fs/xfs/xfs_fs_subr.c b/fs/xfs/xfs_fs_subr.c
index ed88ed1..652b875 100644
--- a/fs/xfs/xfs_fs_subr.c
+++ b/fs/xfs/xfs_fs_subr.c
@@ -90,7 +90,7 @@
 
 	if (mapping_tagged(mapping, PAGECACHE_TAG_WRITEBACK)) {
 		return -filemap_fdatawait_range(mapping, first,
-					last == -1 ? ip->i_size - 1 : last);
+					last == -1 ? XFS_ISIZE(ip) - 1 : last);
 	}
 	return 0;
 }
diff --git a/fs/xfs/xfs_iget.c b/fs/xfs/xfs_iget.c
index 3960a06..8c3e463 100644
--- a/fs/xfs/xfs_iget.c
+++ b/fs/xfs/xfs_iget.c
@@ -77,7 +77,7 @@
 
 	ASSERT(atomic_read(&ip->i_pincount) == 0);
 	ASSERT(!spin_is_locked(&ip->i_flags_lock));
-	ASSERT(completion_done(&ip->i_flush));
+	ASSERT(!xfs_isiflocked(ip));
 	ASSERT(ip->i_ino == 0);
 
 	mrlock_init(&ip->i_iolock, MRLOCK_BARRIER, "xfsio", ip->i_ino);
@@ -94,8 +94,6 @@
 	ip->i_update_core = 0;
 	ip->i_delayed_blks = 0;
 	memset(&ip->i_d, 0, sizeof(xfs_icdinode_t));
-	ip->i_size = 0;
-	ip->i_new_size = 0;
 
 	return ip;
 }
@@ -150,7 +148,7 @@
 	/* asserts to verify all state is correct here */
 	ASSERT(atomic_read(&ip->i_pincount) == 0);
 	ASSERT(!spin_is_locked(&ip->i_flags_lock));
-	ASSERT(completion_done(&ip->i_flush));
+	ASSERT(!xfs_isiflocked(ip));
 
 	/*
 	 * Because we use RCU freeing we need to ensure the inode always
@@ -450,8 +448,6 @@
 
 	*ipp = ip;
 
-	ASSERT(ip->i_df.if_ext_max ==
-	       XFS_IFORK_DSIZE(ip) / sizeof(xfs_bmbt_rec_t));
 	/*
 	 * If we have a real type for an on-disk inode, we can set ops(&unlock)
 	 * now.	 If it's a new inode being created, xfs_ialloc will handle it.
@@ -715,3 +711,19 @@
 	return 0;
 }
 #endif
+
+void
+__xfs_iflock(
+	struct xfs_inode	*ip)
+{
+	wait_queue_head_t *wq = bit_waitqueue(&ip->i_flags, __XFS_IFLOCK_BIT);
+	DEFINE_WAIT_BIT(wait, &ip->i_flags, __XFS_IFLOCK_BIT);
+
+	do {
+		prepare_to_wait_exclusive(wq, &wait.wait, TASK_UNINTERRUPTIBLE);
+		if (xfs_isiflocked(ip))
+			io_schedule();
+	} while (!xfs_iflock_nowait(ip));
+
+	finish_wait(wq, &wait.wait);
+}
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 9dda7cc..b210224 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -299,11 +299,8 @@
 {
 	xfs_attr_shortform_t	*atp;
 	int			size;
-	int			error;
+	int			error = 0;
 	xfs_fsize_t             di_size;
-	ip->i_df.if_ext_max =
-		XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t);
-	error = 0;
 
 	if (unlikely(be32_to_cpu(dip->di_nextents) +
 		     be16_to_cpu(dip->di_anextents) >
@@ -350,7 +347,6 @@
 			return XFS_ERROR(EFSCORRUPTED);
 		}
 		ip->i_d.di_size = 0;
-		ip->i_size = 0;
 		ip->i_df.if_u2.if_rdev = xfs_dinode_get_rdev(dip);
 		break;
 
@@ -409,10 +405,10 @@
 	}
 	if (!XFS_DFORK_Q(dip))
 		return 0;
+
 	ASSERT(ip->i_afp == NULL);
 	ip->i_afp = kmem_zone_zalloc(xfs_ifork_zone, KM_SLEEP | KM_NOFS);
-	ip->i_afp->if_ext_max =
-		XFS_IFORK_ASIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t);
+
 	switch (dip->di_aformat) {
 	case XFS_DINODE_FMT_LOCAL:
 		atp = (xfs_attr_shortform_t *)XFS_DFORK_APTR(dip);
@@ -604,10 +600,11 @@
 	 * or the number of extents is greater than the number of
 	 * blocks.
 	 */
-	if (unlikely(XFS_IFORK_NEXTENTS(ip, whichfork) <= ifp->if_ext_max
-	    || XFS_BMDR_SPACE_CALC(nrecs) >
-			XFS_DFORK_SIZE(dip, ip->i_mount, whichfork)
-	    || XFS_IFORK_NEXTENTS(ip, whichfork) > ip->i_d.di_nblocks)) {
+	if (unlikely(XFS_IFORK_NEXTENTS(ip, whichfork) <=
+			XFS_IFORK_MAXEXT(ip, whichfork) ||
+		     XFS_BMDR_SPACE_CALC(nrecs) >
+			XFS_DFORK_SIZE(dip, ip->i_mount, whichfork) ||
+		     XFS_IFORK_NEXTENTS(ip, whichfork) > ip->i_d.di_nblocks)) {
 		xfs_warn(ip->i_mount, "corrupt inode %Lu (btree).",
 			(unsigned long long) ip->i_ino);
 		XFS_CORRUPTION_ERROR("xfs_iformat_btree", XFS_ERRLEVEL_LOW,
@@ -835,12 +832,6 @@
 		 * with the uninitialized part of it.
 		 */
 		ip->i_d.di_mode = 0;
-		/*
-		 * Initialize the per-fork minima and maxima for a new
-		 * inode here.  xfs_iformat will do it for old inodes.
-		 */
-		ip->i_df.if_ext_max =
-			XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t);
 	}
 
 	/*
@@ -861,7 +852,6 @@
 	}
 
 	ip->i_delayed_blks = 0;
-	ip->i_size = ip->i_d.di_size;
 
 	/*
 	 * Mark the buffer containing the inode as something to keep
@@ -1051,7 +1041,6 @@
 	}
 
 	ip->i_d.di_size = 0;
-	ip->i_size = 0;
 	ip->i_d.di_nextents = 0;
 	ASSERT(ip->i_d.di_nblocks == 0);
 
@@ -1166,52 +1155,6 @@
 }
 
 /*
- * Check to make sure that there are no blocks allocated to the
- * file beyond the size of the file.  We don't check this for
- * files with fixed size extents or real time extents, but we
- * at least do it for regular files.
- */
-#ifdef DEBUG
-STATIC void
-xfs_isize_check(
-	struct xfs_inode	*ip,
-	xfs_fsize_t		isize)
-{
-	struct xfs_mount	*mp = ip->i_mount;
-	xfs_fileoff_t		map_first;
-	int			nimaps;
-	xfs_bmbt_irec_t		imaps[2];
-	int			error;
-
-	if (!S_ISREG(ip->i_d.di_mode))
-		return;
-
-	if (XFS_IS_REALTIME_INODE(ip))
-		return;
-
-	if (ip->i_d.di_flags & XFS_DIFLAG_EXTSIZE)
-		return;
-
-	nimaps = 2;
-	map_first = XFS_B_TO_FSB(mp, (xfs_ufsize_t)isize);
-	/*
-	 * The filesystem could be shutting down, so bmapi may return
-	 * an error.
-	 */
-	error = xfs_bmapi_read(ip, map_first,
-			 (XFS_B_TO_FSB(mp,
-			       (xfs_ufsize_t)XFS_MAXIOFFSET(mp)) - map_first),
-			 imaps, &nimaps, XFS_BMAPI_ENTIRE);
-	if (error)
-		return;
-	ASSERT(nimaps == 1);
-	ASSERT(imaps[0].br_startblock == HOLESTARTBLOCK);
-}
-#else	/* DEBUG */
-#define xfs_isize_check(ip, isize)
-#endif	/* DEBUG */
-
-/*
  * Free up the underlying blocks past new_size.  The new size must be smaller
  * than the current size.  This routine can be used both for the attribute and
  * data fork, and does not modify the inode size, which is left to the caller.
@@ -1252,12 +1195,14 @@
 	int			done = 0;
 
 	ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_IOLOCK_EXCL));
-	ASSERT(new_size <= ip->i_size);
+	ASSERT(new_size <= XFS_ISIZE(ip));
 	ASSERT(tp->t_flags & XFS_TRANS_PERM_LOG_RES);
 	ASSERT(ip->i_itemp != NULL);
 	ASSERT(ip->i_itemp->ili_lock_flags == 0);
 	ASSERT(!XFS_NOT_DQATTACHED(mp, ip));
 
+	trace_xfs_itruncate_extents_start(ip, new_size);
+
 	/*
 	 * Since it is possible for space to become allocated beyond
 	 * the end of the file (in a crash where the space is allocated
@@ -1325,6 +1270,14 @@
 			goto out;
 	}
 
+	/*
+	 * Always re-log the inode so that our permanent transaction can keep
+	 * on rolling it forward in the log.
+	 */
+	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
+
+	trace_xfs_itruncate_extents_end(ip, new_size);
+
 out:
 	*tpp = tp;
 	return error;
@@ -1338,74 +1291,6 @@
 	goto out;
 }
 
-int
-xfs_itruncate_data(
-	struct xfs_trans	**tpp,
-	struct xfs_inode	*ip,
-	xfs_fsize_t		new_size)
-{
-	int			error;
-
-	trace_xfs_itruncate_data_start(ip, new_size);
-
-	/*
-	 * The first thing we do is set the size to new_size permanently on
-	 * disk.  This way we don't have to worry about anyone ever being able
-	 * to look at the data being freed even in the face of a crash.
-	 * What we're getting around here is the case where we free a block, it
-	 * is allocated to another file, it is written to, and then we crash.
-	 * If the new data gets written to the file but the log buffers
-	 * containing the free and reallocation don't, then we'd end up with
-	 * garbage in the blocks being freed.  As long as we make the new_size
-	 * permanent before actually freeing any blocks it doesn't matter if
-	 * they get written to.
-	 */
-	if (ip->i_d.di_nextents > 0) {
-		/*
-		 * If we are not changing the file size then do not update
-		 * the on-disk file size - we may be called from
-		 * xfs_inactive_free_eofblocks().  If we update the on-disk
-		 * file size and then the system crashes before the contents
-		 * of the file are flushed to disk then the files may be
-		 * full of holes (ie NULL files bug).
-		 */
-		if (ip->i_size != new_size) {
-			ip->i_d.di_size = new_size;
-			ip->i_size = new_size;
-			xfs_trans_log_inode(*tpp, ip, XFS_ILOG_CORE);
-		}
-	}
-
-	error = xfs_itruncate_extents(tpp, ip, XFS_DATA_FORK, new_size);
-	if (error)
-		return error;
-
-	/*
-	 * If we are not changing the file size then do not update the on-disk
-	 * file size - we may be called from xfs_inactive_free_eofblocks().
-	 * If we update the on-disk file size and then the system crashes
-	 * before the contents of the file are flushed to disk then the files
-	 * may be full of holes (ie NULL files bug).
-	 */
-	xfs_isize_check(ip, new_size);
-	if (ip->i_size != new_size) {
-		ip->i_d.di_size = new_size;
-		ip->i_size = new_size;
-	}
-
-	ASSERT(new_size != 0 || ip->i_delayed_blks == 0);
-	ASSERT(new_size != 0 || ip->i_d.di_nextents == 0);
-
-	/*
-	 * Always re-log the inode so that our permanent transaction can keep
-	 * on rolling it forward in the log.
-	 */
-	xfs_trans_log_inode(*tpp, ip, XFS_ILOG_CORE);
-
-	trace_xfs_itruncate_data_end(ip, new_size);
-	return 0;
-}
-
 /*
  * This is called when the inode's link count goes to 0.
  * We place the on-disk inode on a list in the AGI.  It
@@ -1824,8 +1709,7 @@
 	ASSERT(ip->i_d.di_nlink == 0);
 	ASSERT(ip->i_d.di_nextents == 0);
 	ASSERT(ip->i_d.di_anextents == 0);
-	ASSERT((ip->i_d.di_size == 0 && ip->i_size == 0) ||
-	       (!S_ISREG(ip->i_d.di_mode)));
+	ASSERT(ip->i_d.di_size == 0 || !S_ISREG(ip->i_d.di_mode));
 	ASSERT(ip->i_d.di_nblocks == 0);
 
 	/*
@@ -1844,8 +1728,6 @@
 	ip->i_d.di_flags = 0;
 	ip->i_d.di_dmevmask = 0;
 	ip->i_d.di_forkoff = 0;		/* mark the attr fork not in use */
-	ip->i_df.if_ext_max =
-		XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t);
 	ip->i_d.di_format = XFS_DINODE_FMT_EXTENTS;
 	ip->i_d.di_aformat = XFS_DINODE_FMT_EXTENTS;
 	/*
@@ -2151,7 +2033,7 @@
  * once someone is waiting for it to be unpinned.
  */
 static void
-xfs_iunpin_nowait(
+xfs_iunpin(
 	struct xfs_inode	*ip)
 {
 	ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED));
@@ -2163,14 +2045,29 @@
 
 }
 
+static void
+__xfs_iunpin_wait(
+	struct xfs_inode	*ip)
+{
+	wait_queue_head_t *wq = bit_waitqueue(&ip->i_flags, __XFS_IPINNED_BIT);
+	DEFINE_WAIT_BIT(wait, &ip->i_flags, __XFS_IPINNED_BIT);
+
+	xfs_iunpin(ip);
+
+	do {
+		prepare_to_wait(wq, &wait.wait, TASK_UNINTERRUPTIBLE);
+		if (xfs_ipincount(ip))
+			io_schedule();
+	} while (xfs_ipincount(ip));
+	finish_wait(wq, &wait.wait);
+}
+
 void
 xfs_iunpin_wait(
 	struct xfs_inode	*ip)
 {
-	if (xfs_ipincount(ip)) {
-		xfs_iunpin_nowait(ip);
-		wait_event(ip->i_ipin_wait, (xfs_ipincount(ip) == 0));
-	}
+	if (xfs_ipincount(ip))
+		__xfs_iunpin_wait(ip);
 }
 
 /*
@@ -2510,9 +2407,9 @@
 	XFS_STATS_INC(xs_iflush_count);
 
 	ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED));
-	ASSERT(!completion_done(&ip->i_flush));
+	ASSERT(xfs_isiflocked(ip));
 	ASSERT(ip->i_d.di_format != XFS_DINODE_FMT_BTREE ||
-	       ip->i_d.di_nextents > ip->i_df.if_ext_max);
+	       ip->i_d.di_nextents > XFS_IFORK_MAXEXT(ip, XFS_DATA_FORK));
 
 	iip = ip->i_itemp;
 	mp = ip->i_mount;
@@ -2529,7 +2426,7 @@
 	 * out for us if they occur after the log force completes.
 	 */
 	if (!(flags & SYNC_WAIT) && xfs_ipincount(ip)) {
-		xfs_iunpin_nowait(ip);
+		xfs_iunpin(ip);
 		xfs_ifunlock(ip);
 		return EAGAIN;
 	}
@@ -2626,9 +2523,9 @@
 #endif
 
 	ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED));
-	ASSERT(!completion_done(&ip->i_flush));
+	ASSERT(xfs_isiflocked(ip));
 	ASSERT(ip->i_d.di_format != XFS_DINODE_FMT_BTREE ||
-	       ip->i_d.di_nextents > ip->i_df.if_ext_max);
+	       ip->i_d.di_nextents > XFS_IFORK_MAXEXT(ip, XFS_DATA_FORK));
 
 	iip = ip->i_itemp;
 	mp = ip->i_mount;
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
index f0e6b15..2f27b74 100644
--- a/fs/xfs/xfs_inode.h
+++ b/fs/xfs/xfs_inode.h
@@ -66,7 +66,6 @@
 	struct xfs_btree_block	*if_broot;	/* file's incore btree root */
 	short			if_broot_bytes;	/* bytes allocated for root */
 	unsigned char		if_flags;	/* per-fork flags */
-	unsigned char		if_ext_max;	/* max # of extent records */
 	union {
 		xfs_bmbt_rec_host_t *if_extents;/* linear map file exts */
 		xfs_ext_irec_t	*if_ext_irec;	/* irec map file exts */
@@ -206,12 +205,12 @@
 	((w) == XFS_DATA_FORK ? \
 		((ip)->i_d.di_nextents = (n)) : \
 		((ip)->i_d.di_anextents = (n)))
-
+#define XFS_IFORK_MAXEXT(ip, w) \
+	(XFS_IFORK_SIZE(ip, w) / sizeof(xfs_bmbt_rec_t))
 
 
 #ifdef __KERNEL__
 
-struct bhv_desc;
 struct xfs_buf;
 struct xfs_bmap_free;
 struct xfs_bmbt_irec;
@@ -220,12 +219,6 @@
 struct xfs_trans;
 struct xfs_dquot;
 
-typedef struct dm_attrs_s {
-	__uint32_t	da_dmevmask;	/* DMIG event mask */
-	__uint16_t	da_dmstate;	/* DMIG state info */
-	__uint16_t	da_pad;		/* DMIG extra padding */
-} dm_attrs_t;
-
 typedef struct xfs_inode {
 	/* Inode linking and identification information. */
 	struct xfs_mount	*i_mount;	/* fs mount struct ptr */
@@ -244,27 +237,19 @@
 	struct xfs_inode_log_item *i_itemp;	/* logging information */
 	mrlock_t		i_lock;		/* inode lock */
 	mrlock_t		i_iolock;	/* inode IO lock */
-	struct completion	i_flush;	/* inode flush completion q */
 	atomic_t		i_pincount;	/* inode pin count */
-	wait_queue_head_t	i_ipin_wait;	/* inode pinning wait queue */
 	spinlock_t		i_flags_lock;	/* inode i_flags lock */
 	/* Miscellaneous state. */
-	unsigned short		i_flags;	/* see defined flags below */
+	unsigned long		i_flags;	/* see defined flags below */
 	unsigned char		i_update_core;	/* timestamps/size is dirty */
 	unsigned int		i_delayed_blks;	/* count of delay alloc blks */
 
 	xfs_icdinode_t		i_d;		/* most of ondisk inode */
 
-	xfs_fsize_t		i_size;		/* in-memory size */
-	xfs_fsize_t		i_new_size;	/* size when write completes */
-
 	/* VFS inode */
 	struct inode		i_vnode;	/* embedded VFS inode */
 } xfs_inode_t;
 
-#define XFS_ISIZE(ip)	S_ISREG((ip)->i_d.di_mode) ? \
-				(ip)->i_size : (ip)->i_d.di_size;
-
 /* Convert from vfs inode to xfs inode */
 static inline struct xfs_inode *XFS_I(struct inode *inode)
 {
@@ -278,6 +263,18 @@
 }
 
 /*
+ * For regular files we only update the on-disk filesize when actually
+ * writing data back to disk.  Until then only the copy in the VFS inode
+ * is uptodate.
+ */
+static inline xfs_fsize_t XFS_ISIZE(struct xfs_inode *ip)
+{
+	if (S_ISREG(ip->i_d.di_mode))
+		return i_size_read(VFS_I(ip));
+	return ip->i_d.di_size;
+}
+
+/*
  * i_flags helper functions
  */
 static inline void
@@ -331,6 +328,19 @@
 	return ret;
 }
 
+static inline int
+xfs_iflags_test_and_set(xfs_inode_t *ip, unsigned short flags)
+{
+	int ret;
+
+	spin_lock(&ip->i_flags_lock);
+	ret = ip->i_flags & flags;
+	if (!ret)
+		ip->i_flags |= flags;
+	spin_unlock(&ip->i_flags_lock);
+	return ret;
+}
+
 /*
  * Project quota id helpers (previously projid was 16bit only
  * and using two 16bit values to hold new 32bit projid was chosen
@@ -351,35 +361,19 @@
 }
 
 /*
- * Manage the i_flush queue embedded in the inode.  This completion
- * queue synchronizes processes attempting to flush the in-core
- * inode back to disk.
- */
-static inline void xfs_iflock(xfs_inode_t *ip)
-{
-	wait_for_completion(&ip->i_flush);
-}
-
-static inline int xfs_iflock_nowait(xfs_inode_t *ip)
-{
-	return try_wait_for_completion(&ip->i_flush);
-}
-
-static inline void xfs_ifunlock(xfs_inode_t *ip)
-{
-	complete(&ip->i_flush);
-}
-
-/*
  * In-core inode flags.
  */
-#define XFS_IRECLAIM		0x0001  /* started reclaiming this inode */
-#define XFS_ISTALE		0x0002	/* inode has been staled */
-#define XFS_IRECLAIMABLE	0x0004	/* inode can be reclaimed */
-#define XFS_INEW		0x0008	/* inode has just been allocated */
-#define XFS_IFILESTREAM		0x0010	/* inode is in a filestream directory */
-#define XFS_ITRUNCATED		0x0020	/* truncated down so flush-on-close */
-#define XFS_IDIRTY_RELEASE	0x0040	/* dirty release already seen */
+#define XFS_IRECLAIM		(1 << 0) /* started reclaiming this inode */
+#define XFS_ISTALE		(1 << 1) /* inode has been staled */
+#define XFS_IRECLAIMABLE	(1 << 2) /* inode can be reclaimed */
+#define XFS_INEW		(1 << 3) /* inode has just been allocated */
+#define XFS_IFILESTREAM		(1 << 4) /* inode is in a filestream dir. */
+#define XFS_ITRUNCATED		(1 << 5) /* truncated down so flush-on-close */
+#define XFS_IDIRTY_RELEASE	(1 << 6) /* dirty release already seen */
+#define __XFS_IFLOCK_BIT	7	 /* inode is being flushed right now */
+#define XFS_IFLOCK		(1 << __XFS_IFLOCK_BIT)
+#define __XFS_IPINNED_BIT	8	 /* wakeup key for zero pin count */
+#define XFS_IPINNED		(1 << __XFS_IPINNED_BIT)
 
 /*
  * Per-lifetime flags need to be reset when re-using a reclaimable inode during
@@ -392,6 +386,34 @@
 	 XFS_IFILESTREAM);
 
 /*
+ * Synchronize processes attempting to flush the in-core inode back to disk.
+ */
+
+extern void __xfs_iflock(struct xfs_inode *ip);
+
+static inline int xfs_iflock_nowait(struct xfs_inode *ip)
+{
+	return !xfs_iflags_test_and_set(ip, XFS_IFLOCK);
+}
+
+static inline void xfs_iflock(struct xfs_inode *ip)
+{
+	if (!xfs_iflock_nowait(ip))
+		__xfs_iflock(ip);
+}
+
+static inline void xfs_ifunlock(struct xfs_inode *ip)
+{
+	xfs_iflags_clear(ip, XFS_IFLOCK);
+	wake_up_bit(&ip->i_flags, __XFS_IFLOCK_BIT);
+}
+
+static inline int xfs_isiflocked(struct xfs_inode *ip)
+{
+	return xfs_iflags_test(ip, XFS_IFLOCK);
+}
+
+/*
  * Flags for inode locking.
  * Bit ranges:	1<<1  - 1<<16-1 -- iolock/ilock modes (bitfield)
  *		1<<16 - 1<<32-1 -- lockdep annotation (integers)
@@ -491,8 +513,6 @@
 			   struct xfs_bmap_free *);
 int		xfs_itruncate_extents(struct xfs_trans **, struct xfs_inode *,
 				      int, xfs_fsize_t);
-int		xfs_itruncate_data(struct xfs_trans **, struct xfs_inode *,
-				   xfs_fsize_t);
 int		xfs_iunlink(struct xfs_trans *, xfs_inode_t *);
 
 void		xfs_iext_realloc(xfs_inode_t *, int, int);
diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c
index cfd6c7f..91d71dc 100644
--- a/fs/xfs/xfs_inode_item.c
+++ b/fs/xfs/xfs_inode_item.c
@@ -79,8 +79,6 @@
 		break;
 
 	case XFS_DINODE_FMT_BTREE:
-		ASSERT(ip->i_df.if_ext_max ==
-		       XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t));
 		iip->ili_format.ilf_fields &=
 			~(XFS_ILOG_DDATA | XFS_ILOG_DEXT |
 			  XFS_ILOG_DEV | XFS_ILOG_UUID);
@@ -557,7 +555,7 @@
 	trace_xfs_inode_unpin(ip, _RET_IP_);
 	ASSERT(atomic_read(&ip->i_pincount) > 0);
 	if (atomic_dec_and_test(&ip->i_pincount))
-		wake_up(&ip->i_ipin_wait);
+		wake_up_bit(&ip->i_flags, __XFS_IPINNED_BIT);
 }
 
 /*
@@ -719,7 +717,7 @@
 	 * If a flush is not in progress anymore, chances are that the
 	 * inode was taken off the AIL. So, just get out.
 	 */
-	if (completion_done(&ip->i_flush) ||
+	if (!xfs_isiflocked(ip) ||
 	    !(lip->li_flags & XFS_LI_IN_AIL)) {
 		xfs_iunlock(ip, XFS_ILOCK_SHARED);
 		return true;
@@ -752,7 +750,7 @@
 	struct xfs_inode	*ip = iip->ili_inode;
 
 	ASSERT(xfs_isilocked(ip, XFS_ILOCK_SHARED));
-	ASSERT(!completion_done(&ip->i_flush));
+	ASSERT(xfs_isiflocked(ip));
 
 	/*
 	 * Since we were able to lock the inode's flush lock and
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index 9afa282..246c7d5 100644
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c
@@ -57,26 +57,26 @@
 	xfs_fileoff_t	*last_fsb)
 {
 	xfs_fileoff_t	new_last_fsb = 0;
-	xfs_extlen_t	align;
+	xfs_extlen_t	align = 0;
 	int		eof, error;
 
-	if (XFS_IS_REALTIME_INODE(ip))
-		;
-	/*
-	 * If mounted with the "-o swalloc" option, roundup the allocation
-	 * request to a stripe width boundary if the file size is >=
-	 * stripe width and we are allocating past the allocation eof.
-	 */
-	else if (mp->m_swidth && (mp->m_flags & XFS_MOUNT_SWALLOC) &&
-	        (ip->i_size >= XFS_FSB_TO_B(mp, mp->m_swidth)))
-		new_last_fsb = roundup_64(*last_fsb, mp->m_swidth);
-	/*
-	 * Roundup the allocation request to a stripe unit (m_dalign) boundary
-	 * if the file size is >= stripe unit size, and we are allocating past
-	 * the allocation eof.
-	 */
-	else if (mp->m_dalign && (ip->i_size >= XFS_FSB_TO_B(mp, mp->m_dalign)))
-		new_last_fsb = roundup_64(*last_fsb, mp->m_dalign);
+	if (!XFS_IS_REALTIME_INODE(ip)) {
+		/*
+		 * Round up the allocation request to a stripe unit
+		 * (m_dalign) boundary if the file size is >= stripe unit
+		 * size, and we are allocating past the allocation eof.
+		 *
+		 * If mounted with the "-o swalloc" option the alignment is
+		 * increased from the strip unit size to the stripe width.
+		 */
+		if (mp->m_swidth && (mp->m_flags & XFS_MOUNT_SWALLOC))
+			align = mp->m_swidth;
+		else if (mp->m_dalign)
+			align = mp->m_dalign;
+
+		if (align && XFS_ISIZE(ip) >= XFS_FSB_TO_B(mp, align))
+			new_last_fsb = roundup_64(*last_fsb, align);
+	}
 
 	/*
 	 * Always round up the allocation request to an extent boundary
@@ -154,7 +154,7 @@
 
 	offset_fsb = XFS_B_TO_FSBT(mp, offset);
 	last_fsb = XFS_B_TO_FSB(mp, ((xfs_ufsize_t)(offset + count)));
-	if ((offset + count) > ip->i_size) {
+	if ((offset + count) > XFS_ISIZE(ip)) {
 		error = xfs_iomap_eof_align_last_fsb(mp, ip, extsz, &last_fsb);
 		if (error)
 			goto error_out;
@@ -211,7 +211,7 @@
 	xfs_trans_ijoin(tp, ip, 0);
 
 	bmapi_flag = 0;
-	if (offset < ip->i_size || extsz)
+	if (offset < XFS_ISIZE(ip) || extsz)
 		bmapi_flag |= XFS_BMAPI_PREALLOC;
 
 	/*
@@ -286,7 +286,7 @@
 	int		found_delalloc = 0;
 
 	*prealloc = 0;
-	if ((offset + count) <= ip->i_size)
+	if (offset + count <= XFS_ISIZE(ip))
 		return 0;
 
 	/*
@@ -340,7 +340,7 @@
 		 * if we pass in alloc_blocks = 0. Hence the "+ 1" to
 		 * ensure we always pass in a non-zero value.
 		 */
-		alloc_blocks = XFS_B_TO_FSB(mp, ip->i_size) + 1;
+		alloc_blocks = XFS_B_TO_FSB(mp, XFS_ISIZE(ip)) + 1;
 		alloc_blocks = XFS_FILEOFF_MIN(MAXEXTLEN,
 					rounddown_pow_of_two(alloc_blocks));
 
@@ -564,7 +564,7 @@
 			 * back....
 			 */
 			nimaps = 1;
-			end_fsb = XFS_B_TO_FSB(mp, ip->i_size);
+			end_fsb = XFS_B_TO_FSB(mp, XFS_ISIZE(ip));
 			error = xfs_bmap_last_offset(NULL, ip, &last_block,
 							XFS_DATA_FORK);
 			if (error)
diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
index f9babd1..ab30253 100644
--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -750,6 +750,7 @@
 	struct xfs_mount	*mp = ip->i_mount;
 	struct inode		*inode = VFS_I(ip);
 	int			mask = iattr->ia_valid;
+	xfs_off_t		oldsize, newsize;
 	struct xfs_trans	*tp;
 	int			error;
 	uint			lock_flags;
@@ -777,11 +778,13 @@
 		lock_flags |= XFS_IOLOCK_EXCL;
 	xfs_ilock(ip, lock_flags);
 
+	oldsize = inode->i_size;
+	newsize = iattr->ia_size;
+
 	/*
 	 * Short circuit the truncate case for zero length files.
 	 */
-	if (iattr->ia_size == 0 &&
-	    ip->i_size == 0 && ip->i_d.di_nextents == 0) {
+	if (newsize == 0 && oldsize == 0 && ip->i_d.di_nextents == 0) {
 		if (!(mask & (ATTR_CTIME|ATTR_MTIME)))
 			goto out_unlock;
 
@@ -807,14 +810,14 @@
 	 * the inode to the transaction, because the inode cannot be unlocked
 	 * once it is a part of the transaction.
 	 */
-	if (iattr->ia_size > ip->i_size) {
+	if (newsize > oldsize) {
 		/*
 		 * Do the first part of growing a file: zero any data in the
 		 * last block that is beyond the old EOF.  We need to do this
 		 * before the inode is joined to the transaction to modify
 		 * i_size.
 		 */
-		error = xfs_zero_eof(ip, iattr->ia_size, ip->i_size);
+		error = xfs_zero_eof(ip, newsize, oldsize);
 		if (error)
 			goto out_unlock;
 	}
@@ -833,8 +836,8 @@
 	 * here and prevents waiting for other data not within the range we
 	 * care about here.
 	 */
-	if (ip->i_size != ip->i_d.di_size && iattr->ia_size > ip->i_d.di_size) {
-		error = xfs_flush_pages(ip, ip->i_d.di_size, iattr->ia_size, 0,
+	if (oldsize != ip->i_d.di_size && newsize > ip->i_d.di_size) {
+		error = xfs_flush_pages(ip, ip->i_d.di_size, newsize, 0,
 					FI_NONE);
 		if (error)
 			goto out_unlock;
@@ -845,8 +848,7 @@
 	 */
 	inode_dio_wait(inode);
 
-	error = -block_truncate_page(inode->i_mapping, iattr->ia_size,
-				     xfs_get_blocks);
+	error = -block_truncate_page(inode->i_mapping, newsize, xfs_get_blocks);
 	if (error)
 		goto out_unlock;
 
@@ -857,7 +859,7 @@
 	if (error)
 		goto out_trans_cancel;
 
-	truncate_setsize(inode, iattr->ia_size);
+	truncate_setsize(inode, newsize);
 
 	commit_flags = XFS_TRANS_RELEASE_LOG_RES;
 	lock_flags |= XFS_ILOCK_EXCL;
@@ -876,19 +878,29 @@
 	 * these flags set.  For all other operations the VFS set these flags
 	 * explicitly if it wants a timestamp update.
 	 */
-	if (iattr->ia_size != ip->i_size &&
-	    (!(mask & (ATTR_CTIME | ATTR_MTIME)))) {
+	if (newsize != oldsize && (!(mask & (ATTR_CTIME | ATTR_MTIME)))) {
 		iattr->ia_ctime = iattr->ia_mtime =
 			current_fs_time(inode->i_sb);
 		mask |= ATTR_CTIME | ATTR_MTIME;
 	}
 
-	if (iattr->ia_size > ip->i_size) {
-		ip->i_d.di_size = iattr->ia_size;
-		ip->i_size = iattr->ia_size;
-	} else if (iattr->ia_size <= ip->i_size ||
-		   (iattr->ia_size == 0 && ip->i_d.di_nextents)) {
-		error = xfs_itruncate_data(&tp, ip, iattr->ia_size);
+	/*
+	 * The first thing we do is set the size to new_size permanently on
+	 * disk.  This way we don't have to worry about anyone ever being able
+	 * to look at the data being freed even in the face of a crash.
+	 * What we're getting around here is the case where we free a block, it
+	 * is allocated to another file, it is written to, and then we crash.
+	 * If the new data gets written to the file but the log buffers
+	 * containing the free and reallocation don't, then we'd end up with
+	 * garbage in the blocks being freed.  As long as we make the new size
+	 * permanent before actually freeing any blocks it doesn't matter if
+	 * they get written to.
+	 */
+	ip->i_d.di_size = newsize;
+	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
+
+	if (newsize <= oldsize) {
+		error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, newsize);
 		if (error)
 			goto out_trans_abort;
 
diff --git a/fs/xfs/xfs_qm_syscalls.c b/fs/xfs/xfs_qm_syscalls.c
index 5cc3dde..eafbcff 100644
--- a/fs/xfs/xfs_qm_syscalls.c
+++ b/fs/xfs/xfs_qm_syscalls.c
@@ -31,6 +31,7 @@
 #include "xfs_mount.h"
 #include "xfs_bmap_btree.h"
 #include "xfs_inode.h"
+#include "xfs_inode_item.h"
 #include "xfs_itable.h"
 #include "xfs_bmap.h"
 #include "xfs_rtalloc.h"
@@ -263,13 +264,18 @@
 	xfs_ilock(ip, XFS_ILOCK_EXCL);
 	xfs_trans_ijoin(tp, ip, 0);
 
-	error = xfs_itruncate_data(&tp, ip, 0);
+	ip->i_d.di_size = 0;
+	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
+
+	error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, 0);
 	if (error) {
 		xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES |
 				     XFS_TRANS_ABORT);
 		goto out_unlock;
 	}
 
+	ASSERT(ip->i_d.di_nextents == 0);
+
 	xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
 	error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
 
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 281961c..ee5b695 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -828,14 +828,6 @@
 	/* xfs inode */
 	atomic_set(&ip->i_pincount, 0);
 	spin_lock_init(&ip->i_flags_lock);
-	init_waitqueue_head(&ip->i_ipin_wait);
-	/*
-	 * Because we want to use a counting completion, complete
-	 * the flush completion once to allow a single access to
-	 * the flush completion without blocking.
-	 */
-	init_completion(&ip->i_flush);
-	complete(&ip->i_flush);
 
 	mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER,
 		     "xfsino", ip->i_ino);
diff --git a/fs/xfs/xfs_sync.c b/fs/xfs/xfs_sync.c
index 72c01a1..40b75ee 100644
--- a/fs/xfs/xfs_sync.c
+++ b/fs/xfs/xfs_sync.c
@@ -707,14 +707,13 @@
 		return 1;
 
 	/*
-	 * do some unlocked checks first to avoid unnecessary lock traffic.
-	 * The first is a flush lock check, the second is a already in reclaim
-	 * check. Only do these checks if we are not going to block on locks.
+	 * If we are asked for non-blocking operation, do unlocked checks to
+	 * see if the inode already is being flushed or in reclaim to avoid
+	 * lock traffic.
 	 */
 	if ((flags & SYNC_TRYLOCK) &&
-	    (!ip->i_flush.done || __xfs_iflags_test(ip, XFS_IRECLAIM))) {
+	    __xfs_iflags_test(ip, XFS_IFLOCK | XFS_IRECLAIM))
 		return 1;
-	}
 
 	/*
 	 * The radix tree lock here protects a thread in xfs_iget from racing
diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h
index a9d5b1e..6b6df58 100644
--- a/fs/xfs/xfs_trace.h
+++ b/fs/xfs/xfs_trace.h
@@ -891,7 +891,6 @@
 		__field(dev_t, dev)
 		__field(xfs_ino_t, ino)
 		__field(xfs_fsize_t, size)
-		__field(xfs_fsize_t, new_size)
 		__field(loff_t, offset)
 		__field(size_t, count)
 		__field(int, flags)
@@ -900,17 +899,15 @@
 		__entry->dev = VFS_I(ip)->i_sb->s_dev;
 		__entry->ino = ip->i_ino;
 		__entry->size = ip->i_d.di_size;
-		__entry->new_size = ip->i_new_size;
 		__entry->offset = offset;
 		__entry->count = count;
 		__entry->flags = flags;
 	),
-	TP_printk("dev %d:%d ino 0x%llx size 0x%llx new_size 0x%llx "
+	TP_printk("dev %d:%d ino 0x%llx size 0x%llx "
 		  "offset 0x%llx count 0x%zx ioflags %s",
 		  MAJOR(__entry->dev), MINOR(__entry->dev),
 		  __entry->ino,
 		  __entry->size,
-		  __entry->new_size,
 		  __entry->offset,
 		  __entry->count,
 		  __print_flags(__entry->flags, "|", XFS_IO_FLAGS))
@@ -978,7 +975,6 @@
 		__field(dev_t, dev)
 		__field(xfs_ino_t, ino)
 		__field(loff_t, size)
-		__field(loff_t, new_size)
 		__field(loff_t, offset)
 		__field(size_t, count)
 		__field(int, type)
@@ -990,7 +986,6 @@
 		__entry->dev = VFS_I(ip)->i_sb->s_dev;
 		__entry->ino = ip->i_ino;
 		__entry->size = ip->i_d.di_size;
-		__entry->new_size = ip->i_new_size;
 		__entry->offset = offset;
 		__entry->count = count;
 		__entry->type = type;
@@ -998,13 +993,11 @@
 		__entry->startblock = irec ? irec->br_startblock : 0;
 		__entry->blockcount = irec ? irec->br_blockcount : 0;
 	),
-	TP_printk("dev %d:%d ino 0x%llx size 0x%llx new_size 0x%llx "
-		  "offset 0x%llx count %zd type %s "
-		  "startoff 0x%llx startblock %lld blockcount 0x%llx",
+	TP_printk("dev %d:%d ino 0x%llx size 0x%llx offset 0x%llx count %zd "
+		  "type %s startoff 0x%llx startblock %lld blockcount 0x%llx",
 		  MAJOR(__entry->dev), MINOR(__entry->dev),
 		  __entry->ino,
 		  __entry->size,
-		  __entry->new_size,
 		  __entry->offset,
 		  __entry->count,
 		  __print_symbolic(__entry->type, XFS_IO_TYPES),
@@ -1031,26 +1024,23 @@
 		__field(xfs_ino_t, ino)
 		__field(loff_t, isize)
 		__field(loff_t, disize)
-		__field(loff_t, new_size)
 		__field(loff_t, offset)
 		__field(size_t, count)
 	),
 	TP_fast_assign(
 		__entry->dev = VFS_I(ip)->i_sb->s_dev;
 		__entry->ino = ip->i_ino;
-		__entry->isize = ip->i_size;
+		__entry->isize = VFS_I(ip)->i_size;
 		__entry->disize = ip->i_d.di_size;
-		__entry->new_size = ip->i_new_size;
 		__entry->offset = offset;
 		__entry->count = count;
 	),
-	TP_printk("dev %d:%d ino 0x%llx isize 0x%llx disize 0x%llx new_size 0x%llx "
+	TP_printk("dev %d:%d ino 0x%llx isize 0x%llx disize 0x%llx "
 		  "offset 0x%llx count %zd",
 		  MAJOR(__entry->dev), MINOR(__entry->dev),
 		  __entry->ino,
 		  __entry->isize,
 		  __entry->disize,
-		  __entry->new_size,
 		  __entry->offset,
 		  __entry->count)
 );
@@ -1090,8 +1080,8 @@
 DEFINE_EVENT(xfs_itrunc_class, name, \
 	TP_PROTO(struct xfs_inode *ip, xfs_fsize_t new_size), \
 	TP_ARGS(ip, new_size))
-DEFINE_ITRUNC_EVENT(xfs_itruncate_data_start);
-DEFINE_ITRUNC_EVENT(xfs_itruncate_data_end);
+DEFINE_ITRUNC_EVENT(xfs_itruncate_extents_start);
+DEFINE_ITRUNC_EVENT(xfs_itruncate_extents_end);
 
 TRACE_EVENT(xfs_pagecache_inval,
 	TP_PROTO(struct xfs_inode *ip, xfs_off_t start, xfs_off_t finish),
@@ -1568,7 +1558,6 @@
 		__field(xfs_ino_t, ino)
 		__field(int, format)
 		__field(int, nex)
-		__field(int, max_nex)
 		__field(int, broot_size)
 		__field(int, fork_off)
 	),
@@ -1578,18 +1567,16 @@
 		__entry->ino = ip->i_ino;
 		__entry->format = ip->i_d.di_format;
 		__entry->nex = ip->i_d.di_nextents;
-		__entry->max_nex = ip->i_df.if_ext_max;
 		__entry->broot_size = ip->i_df.if_broot_bytes;
 		__entry->fork_off = XFS_IFORK_BOFF(ip);
 	),
 	TP_printk("dev %d:%d ino 0x%llx (%s), %s format, num_extents %d, "
-		  "Max in-fork extents %d, broot size %d, fork offset %d",
+		  "broot size %d, fork offset %d",
 		  MAJOR(__entry->dev), MINOR(__entry->dev),
 		  __entry->ino,
 		  __print_symbolic(__entry->which, XFS_SWAPEXT_INODES),
 		  __print_symbolic(__entry->format, XFS_INODE_FORMAT_STR),
 		  __entry->nex,
-		  __entry->max_nex,
 		  __entry->broot_size,
 		  __entry->fork_off)
 )
diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index f2fea86..0cf52da 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -175,7 +175,7 @@
 	 * Figure out if there are any blocks beyond the end
 	 * of the file.  If not, then there is nothing to do.
 	 */
-	end_fsb = XFS_B_TO_FSB(mp, ((xfs_ufsize_t)ip->i_size));
+	end_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_ISIZE(ip));
 	last_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_MAXIOFFSET(mp));
 	if (last_fsb <= end_fsb)
 		return 0;
@@ -226,7 +226,14 @@
 		xfs_ilock(ip, XFS_ILOCK_EXCL);
 		xfs_trans_ijoin(tp, ip, 0);
 
-		error = xfs_itruncate_data(&tp, ip, ip->i_size);
+		/*
+		 * Do not update the on-disk file size.  If we update the
+		 * on-disk file size and then the system crashes before the
+		 * contents of the file are flushed to disk then the files
+		 * may be full of holes (ie NULL files bug).
+		 */
+		error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK,
+					      XFS_ISIZE(ip));
 		if (error) {
 			/*
 			 * If we get an error at this point we simply don't
@@ -540,8 +547,8 @@
 		return 0;
 
 	if ((S_ISREG(ip->i_d.di_mode) &&
-	     ((ip->i_size > 0) || (VN_CACHED(VFS_I(ip)) > 0 ||
-	       ip->i_delayed_blks > 0)) &&
+	     (VFS_I(ip)->i_size > 0 ||
+	      (VN_CACHED(VFS_I(ip)) > 0 || ip->i_delayed_blks > 0)) &&
 	     (ip->i_df.if_flags & XFS_IFEXTENTS))  &&
 	    (!(ip->i_d.di_flags & (XFS_DIFLAG_PREALLOC | XFS_DIFLAG_APPEND)))) {
 
@@ -618,7 +625,7 @@
 	 * only one with a reference to the inode.
 	 */
 	truncate = ((ip->i_d.di_nlink == 0) &&
-	    ((ip->i_d.di_size != 0) || (ip->i_size != 0) ||
+	    ((ip->i_d.di_size != 0) || XFS_ISIZE(ip) != 0 ||
 	     (ip->i_d.di_nextents > 0) || (ip->i_delayed_blks > 0)) &&
 	    S_ISREG(ip->i_d.di_mode));
 
@@ -632,12 +639,12 @@
 
 	if (ip->i_d.di_nlink != 0) {
 		if ((S_ISREG(ip->i_d.di_mode) &&
-                     ((ip->i_size > 0) || (VN_CACHED(VFS_I(ip)) > 0 ||
-                       ip->i_delayed_blks > 0)) &&
-		      (ip->i_df.if_flags & XFS_IFEXTENTS) &&
-		     (!(ip->i_d.di_flags &
+		    (VFS_I(ip)->i_size > 0 ||
+		     (VN_CACHED(VFS_I(ip)) > 0 || ip->i_delayed_blks > 0)) &&
+		    (ip->i_df.if_flags & XFS_IFEXTENTS) &&
+		    (!(ip->i_d.di_flags &
 				(XFS_DIFLAG_PREALLOC | XFS_DIFLAG_APPEND)) ||
-		      (ip->i_delayed_blks != 0)))) {
+		     ip->i_delayed_blks != 0))) {
 			error = xfs_free_eofblocks(mp, ip, 0);
 			if (error)
 				return VN_INACTIVE_CACHE;
@@ -670,13 +677,18 @@
 		xfs_ilock(ip, XFS_ILOCK_EXCL);
 		xfs_trans_ijoin(tp, ip, 0);
 
-		error = xfs_itruncate_data(&tp, ip, 0);
+		ip->i_d.di_size = 0;
+		xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
+
+		error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, 0);
 		if (error) {
 			xfs_trans_cancel(tp,
 				XFS_TRANS_RELEASE_LOG_RES | XFS_TRANS_ABORT);
 			xfs_iunlock(ip, XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL);
 			return VN_INACTIVE_CACHE;
 		}
+
+		ASSERT(ip->i_d.di_nextents == 0);
 	} else if (S_ISLNK(ip->i_d.di_mode)) {
 
 		/*
@@ -1961,11 +1973,11 @@
 	 * since nothing can read beyond eof.  The space will
 	 * be zeroed when the file is extended anyway.
 	 */
-	if (startoff >= ip->i_size)
+	if (startoff >= XFS_ISIZE(ip))
 		return 0;
 
-	if (endoff > ip->i_size)
-		endoff = ip->i_size;
+	if (endoff > XFS_ISIZE(ip))
+		endoff = XFS_ISIZE(ip);
 
 	bp = xfs_buf_get_uncached(XFS_IS_REALTIME_INODE(ip) ?
 					mp->m_rtdev_targp : mp->m_ddev_targp,
@@ -2260,7 +2272,7 @@
 		bf->l_start += offset;
 		break;
 	case 2: /*SEEK_END*/
-		bf->l_start += ip->i_size;
+		bf->l_start += XFS_ISIZE(ip);
 		break;
 	default:
 		return XFS_ERROR(EINVAL);
@@ -2277,7 +2289,7 @@
 	bf->l_whence = 0;
 
 	startoffset = bf->l_start;
-	fsize = ip->i_size;
+	fsize = XFS_ISIZE(ip);
 
 	/*
 	 * XFS_IOC_RESVSP and XFS_IOC_UNRESVSP will reserve or unreserve
diff --git a/include/acpi/acnames.h b/include/acpi/acnames.h
index fc1575f..5b5af0d 100644
--- a/include/acpi/acnames.h
+++ b/include/acpi/acnames.h
@@ -58,6 +58,7 @@
 #define METHOD_NAME__PRT        "_PRT"
 #define METHOD_NAME__CRS        "_CRS"
 #define METHOD_NAME__PRS        "_PRS"
+#define METHOD_NAME__AEI        "_AEI"
 #define METHOD_NAME__PRW        "_PRW"
 #define METHOD_NAME__SRS        "_SRS"
 
diff --git a/include/acpi/acpi_numa.h b/include/acpi/acpi_numa.h
index 1739726..451823c 100644
--- a/include/acpi/acpi_numa.h
+++ b/include/acpi/acpi_numa.h
@@ -15,6 +15,7 @@
 extern int node_to_pxm(int);
 extern void __acpi_map_pxm_to_node(int, int);
 extern int acpi_map_pxm_to_node(int);
+extern unsigned char acpi_srat_revision;
 
 #endif				/* CONFIG_ACPI_NUMA */
 #endif				/* __ACP_NUMA_H */
diff --git a/include/acpi/acpiosxf.h b/include/acpi/acpiosxf.h
index 83062ed..2fe8639 100644
--- a/include/acpi/acpiosxf.h
+++ b/include/acpi/acpiosxf.h
@@ -238,13 +238,6 @@
 /*
  * Miscellaneous
  */
-acpi_status
-acpi_os_validate_address(u8 space_id, acpi_physical_address address,
-			 acpi_size length, char *name);
-acpi_status
-acpi_os_invalidate_address(u8 space_id, acpi_physical_address address,
-			 acpi_size length);
-
 u64 acpi_os_get_timer(void);
 
 acpi_status acpi_os_signal(u32 function, void *info);
diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h
index 7762bc2..a28da35 100644
--- a/include/acpi/acpixf.h
+++ b/include/acpi/acpixf.h
@@ -47,7 +47,7 @@
 
 /* Current ACPICA subsystem version in YYYYMMDD format */
 
-#define ACPI_CA_VERSION                 0x20110623
+#define ACPI_CA_VERSION                 0x20120111
 
 #include "actypes.h"
 #include "actbl.h"
@@ -74,6 +74,7 @@
 extern u32 acpi_current_gpe_count;
 extern struct acpi_table_fadt acpi_gbl_FADT;
 extern u8 acpi_gbl_system_awake_and_running;
+extern u8 acpi_gbl_reduced_hardware;	/* ACPI 5.0 */
 
 extern u32 acpi_rsdt_forced;
 /*
@@ -111,6 +112,11 @@
 
 acpi_status acpi_remove_interface(acpi_string interface_name);
 
+u32
+acpi_check_address_range(acpi_adr_space_type space_id,
+			 acpi_physical_address address,
+			 acpi_size length, u8 warn);
+
 /*
  * ACPI Memory management
  */
@@ -276,12 +282,23 @@
 acpi_status acpi_install_interface_handler(acpi_interface_handler handler);
 
 /*
- * Event interfaces
+ * Global Lock interfaces
  */
 acpi_status acpi_acquire_global_lock(u16 timeout, u32 * handle);
 
 acpi_status acpi_release_global_lock(u32 handle);
 
+/*
+ * Interfaces to AML mutex objects
+ */
+acpi_status
+acpi_acquire_mutex(acpi_handle handle, acpi_string pathname, u16 timeout);
+
+acpi_status acpi_release_mutex(acpi_handle handle, acpi_string pathname);
+
+/*
+ * Fixed Event interfaces
+ */
 acpi_status acpi_enable_event(u32 event, u32 flags);
 
 acpi_status acpi_disable_event(u32 event, u32 flags);
@@ -291,7 +308,7 @@
 acpi_status acpi_get_event_status(u32 event, acpi_event_status * event_status);
 
 /*
- * GPE Interfaces
+ * General Purpose Event (GPE) Interfaces
  */
 acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number);
 
@@ -346,6 +363,10 @@
 #endif
 
 acpi_status
+acpi_get_event_resources(acpi_handle device_handle,
+			 struct acpi_buffer *ret_buffer);
+
+acpi_status
 acpi_walk_resources(acpi_handle device,
 		    char *name,
 		    acpi_walk_resource_callback user_function, void *context);
@@ -360,6 +381,11 @@
 acpi_resource_to_address64(struct acpi_resource *resource,
 			   struct acpi_resource_address64 *out);
 
+acpi_status
+acpi_buffer_to_resource(u8 *aml_buffer,
+			u16 aml_buffer_length,
+			struct acpi_resource **resource_ptr);
+
 /*
  * Hardware (ACPI device) interfaces
  */
diff --git a/include/acpi/acrestyp.h b/include/acpi/acrestyp.h
index 0a66cc4..3506e39 100644
--- a/include/acpi/acrestyp.h
+++ b/include/acpi/acrestyp.h
@@ -61,11 +61,14 @@
 #define ACPI_WRITE_COMBINING_MEMORY     (u8) 0x02
 #define ACPI_PREFETCHABLE_MEMORY        (u8) 0x03
 
+/*! [Begin] no source code translation */
 /*
  * IO Attributes
- * The ISA IO ranges are:     n000-n0_fFh, n400-n4_fFh, n800-n8_fFh, n_c00-n_cFFh.
- * The non-ISA IO ranges are: n100-n3_fFh, n500-n7_fFh, n900-n_bFFh, n_cd0-n_fFFh.
+ * The ISA IO ranges are:     n000-n0FFh,  n400-n4FFh, n800-n8FFh, nC00-nCFFh.
+ * The non-ISA IO ranges are: n100-n3FFh,  n500-n7FFh, n900-nBFFh, nCD0-nFFFh.
  */
+/*! [End] no source code translation !*/
+
 #define ACPI_NON_ISA_ONLY_RANGES        (u8) 0x01
 #define ACPI_ISA_ONLY_RANGES            (u8) 0x02
 #define ACPI_ENTIRE_RANGE               (ACPI_NON_ISA_ONLY_RANGES | ACPI_ISA_ONLY_RANGES)
@@ -81,16 +84,26 @@
 #define ACPI_DECODE_16                  (u8) 0x01	/* 16-bit IO address decode */
 
 /*
- * IRQ Attributes
+ * Interrupt attributes - used in multiple descriptors
  */
+
+/* Triggering */
+
 #define ACPI_LEVEL_SENSITIVE            (u8) 0x00
 #define ACPI_EDGE_SENSITIVE             (u8) 0x01
 
+/* Polarity */
+
 #define ACPI_ACTIVE_HIGH                (u8) 0x00
 #define ACPI_ACTIVE_LOW                 (u8) 0x01
+#define ACPI_ACTIVE_BOTH                (u8) 0x02
+
+/* Sharing */
 
 #define ACPI_EXCLUSIVE                  (u8) 0x00
 #define ACPI_SHARED                     (u8) 0x01
+#define ACPI_EXCLUSIVE_AND_WAKE         (u8) 0x02
+#define ACPI_SHARED_AND_WAKE            (u8) 0x03
 
 /*
  * DMA Attributes
@@ -127,6 +140,8 @@
 #define ACPI_POS_DECODE                 (u8) 0x00
 #define ACPI_SUB_DECODE                 (u8) 0x01
 
+/* Producer/Consumer */
+
 #define ACPI_PRODUCER                   (u8) 0x00
 #define ACPI_CONSUMER                   (u8) 0x01
 
@@ -192,6 +207,21 @@
 	u8 address_length;
 };
 
+struct acpi_resource_fixed_dma {
+	u16 request_lines;
+	u16 channels;
+	u8 width;
+};
+
+/* Values for Width field above */
+
+#define ACPI_DMA_WIDTH8                         0
+#define ACPI_DMA_WIDTH16                        1
+#define ACPI_DMA_WIDTH32                        2
+#define ACPI_DMA_WIDTH64                        3
+#define ACPI_DMA_WIDTH128                       4
+#define ACPI_DMA_WIDTH256                       5
+
 struct acpi_resource_vendor {
 	u16 byte_length;
 	u8 byte_data[1];
@@ -329,6 +359,166 @@
 	u64 address;
 };
 
+struct acpi_resource_gpio {
+	u8 revision_id;
+	u8 connection_type;
+	u8 producer_consumer;	/* For values, see Producer/Consumer above */
+	u8 pin_config;
+	u8 sharable;		/* For values, see Interrupt Attributes above */
+	u8 io_restriction;
+	u8 triggering;		/* For values, see Interrupt Attributes above */
+	u8 polarity;		/* For values, see Interrupt Attributes above */
+	u16 drive_strength;
+	u16 debounce_timeout;
+	u16 pin_table_length;
+	u16 vendor_length;
+	struct acpi_resource_source resource_source;
+	u16 *pin_table;
+	u8 *vendor_data;
+};
+
+/* Values for GPIO connection_type field above */
+
+#define ACPI_RESOURCE_GPIO_TYPE_INT             0
+#define ACPI_RESOURCE_GPIO_TYPE_IO              1
+
+/* Values for pin_config field above */
+
+#define ACPI_PIN_CONFIG_DEFAULT                 0
+#define ACPI_PIN_CONFIG_PULLUP                  1
+#define ACPI_PIN_CONFIG_PULLDOWN                2
+#define ACPI_PIN_CONFIG_NOPULL                  3
+
+/* Values for io_restriction field above */
+
+#define ACPI_IO_RESTRICT_NONE                   0
+#define ACPI_IO_RESTRICT_INPUT                  1
+#define ACPI_IO_RESTRICT_OUTPUT                 2
+#define ACPI_IO_RESTRICT_NONE_PRESERVE          3
+
+/* Common structure for I2C, SPI, and UART serial descriptors */
+
+#define ACPI_RESOURCE_SERIAL_COMMON \
+	u8                                      revision_id; \
+	u8                                      type; \
+	u8                                      producer_consumer;   /* For values, see Producer/Consumer above */\
+	u8                                      slave_mode; \
+	u8                                      type_revision_id; \
+	u16                                     type_data_length; \
+	u16                                     vendor_length; \
+	struct acpi_resource_source             resource_source; \
+	u8                                      *vendor_data;
+
+struct acpi_resource_common_serialbus {
+ACPI_RESOURCE_SERIAL_COMMON};
+
+/* Values for the Type field above */
+
+#define ACPI_RESOURCE_SERIAL_TYPE_I2C           1
+#define ACPI_RESOURCE_SERIAL_TYPE_SPI           2
+#define ACPI_RESOURCE_SERIAL_TYPE_UART          3
+
+/* Values for slave_mode field above */
+
+#define ACPI_CONTROLLER_INITIATED               0
+#define ACPI_DEVICE_INITIATED                   1
+
+struct acpi_resource_i2c_serialbus {
+	ACPI_RESOURCE_SERIAL_COMMON u8 access_mode;
+	u16 slave_address;
+	u32 connection_speed;
+};
+
+/* Values for access_mode field above */
+
+#define ACPI_I2C_7BIT_MODE                      0
+#define ACPI_I2C_10BIT_MODE                     1
+
+struct acpi_resource_spi_serialbus {
+	ACPI_RESOURCE_SERIAL_COMMON u8 wire_mode;
+	u8 device_polarity;
+	u8 data_bit_length;
+	u8 clock_phase;
+	u8 clock_polarity;
+	u16 device_selection;
+	u32 connection_speed;
+};
+
+/* Values for wire_mode field above */
+
+#define ACPI_SPI_4WIRE_MODE                     0
+#define ACPI_SPI_3WIRE_MODE                     1
+
+/* Values for device_polarity field above */
+
+#define ACPI_SPI_ACTIVE_LOW                     0
+#define ACPI_SPI_ACTIVE_HIGH                    1
+
+/* Values for clock_phase field above */
+
+#define ACPI_SPI_FIRST_PHASE                    0
+#define ACPI_SPI_SECOND_PHASE                   1
+
+/* Values for clock_polarity field above */
+
+#define ACPI_SPI_START_LOW                      0
+#define ACPI_SPI_START_HIGH                     1
+
+struct acpi_resource_uart_serialbus {
+	ACPI_RESOURCE_SERIAL_COMMON u8 endian;
+	u8 data_bits;
+	u8 stop_bits;
+	u8 flow_control;
+	u8 parity;
+	u8 lines_enabled;
+	u16 rx_fifo_size;
+	u16 tx_fifo_size;
+	u32 default_baud_rate;
+};
+
+/* Values for Endian field above */
+
+#define ACPI_UART_LITTLE_ENDIAN                 0
+#define ACPI_UART_BIG_ENDIAN                    1
+
+/* Values for data_bits field above */
+
+#define ACPI_UART_5_DATA_BITS                   0
+#define ACPI_UART_6_DATA_BITS                   1
+#define ACPI_UART_7_DATA_BITS                   2
+#define ACPI_UART_8_DATA_BITS                   3
+#define ACPI_UART_9_DATA_BITS                   4
+
+/* Values for stop_bits field above */
+
+#define ACPI_UART_NO_STOP_BITS                  0
+#define ACPI_UART_1_STOP_BIT                    1
+#define ACPI_UART_1P5_STOP_BITS                 2
+#define ACPI_UART_2_STOP_BITS                   3
+
+/* Values for flow_control field above */
+
+#define ACPI_UART_FLOW_CONTROL_NONE             0
+#define ACPI_UART_FLOW_CONTROL_HW               1
+#define ACPI_UART_FLOW_CONTROL_XON_XOFF         2
+
+/* Values for Parity field above */
+
+#define ACPI_UART_PARITY_NONE                   0
+#define ACPI_UART_PARITY_EVEN                   1
+#define ACPI_UART_PARITY_ODD                    2
+#define ACPI_UART_PARITY_MARK                   3
+#define ACPI_UART_PARITY_SPACE                  4
+
+/* Values for lines_enabled bitfield above */
+
+#define ACPI_UART_CARRIER_DETECT                (1<<2)
+#define ACPI_UART_RING_INDICATOR                (1<<3)
+#define ACPI_UART_DATA_SET_READY                (1<<4)
+#define ACPI_UART_DATA_TERMINAL_READY           (1<<5)
+#define ACPI_UART_CLEAR_TO_SEND                 (1<<6)
+#define ACPI_UART_REQUEST_TO_SEND               (1<<7)
+
 /* ACPI_RESOURCE_TYPEs */
 
 #define ACPI_RESOURCE_TYPE_IRQ                  0
@@ -348,7 +538,10 @@
 #define ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64   14	/* ACPI 3.0 */
 #define ACPI_RESOURCE_TYPE_EXTENDED_IRQ         15
 #define ACPI_RESOURCE_TYPE_GENERIC_REGISTER     16
-#define ACPI_RESOURCE_TYPE_MAX                  16
+#define ACPI_RESOURCE_TYPE_GPIO                 17	/* ACPI 5.0 */
+#define ACPI_RESOURCE_TYPE_FIXED_DMA            18	/* ACPI 5.0 */
+#define ACPI_RESOURCE_TYPE_SERIAL_BUS           19	/* ACPI 5.0 */
+#define ACPI_RESOURCE_TYPE_MAX                  19
 
 /* Master union for resource descriptors */
 
@@ -358,6 +551,7 @@
 	struct acpi_resource_start_dependent start_dpf;
 	struct acpi_resource_io io;
 	struct acpi_resource_fixed_io fixed_io;
+	struct acpi_resource_fixed_dma fixed_dma;
 	struct acpi_resource_vendor vendor;
 	struct acpi_resource_vendor_typed vendor_typed;
 	struct acpi_resource_end_tag end_tag;
@@ -370,6 +564,11 @@
 	struct acpi_resource_extended_address64 ext_address64;
 	struct acpi_resource_extended_irq extended_irq;
 	struct acpi_resource_generic_register generic_reg;
+	struct acpi_resource_gpio gpio;
+	struct acpi_resource_i2c_serialbus i2c_serial_bus;
+	struct acpi_resource_spi_serialbus spi_serial_bus;
+	struct acpi_resource_uart_serialbus uart_serial_bus;
+	struct acpi_resource_common_serialbus common_serial_bus;
 
 	/* Common fields */
 
diff --git a/include/acpi/actbl.h b/include/acpi/actbl.h
index f138028..8e1b92f 100644
--- a/include/acpi/actbl.h
+++ b/include/acpi/actbl.h
@@ -255,6 +255,8 @@
 	struct acpi_generic_address xpm_timer_block;	/* 64-bit Extended Power Mgt Timer Ctrl Reg Blk address */
 	struct acpi_generic_address xgpe0_block;	/* 64-bit Extended General Purpose Event 0 Reg Blk address */
 	struct acpi_generic_address xgpe1_block;	/* 64-bit Extended General Purpose Event 1 Reg Blk address */
+	struct acpi_generic_address sleep_control;	/* 64-bit Sleep Control register */
+	struct acpi_generic_address sleep_status;	/* 64-bit Sleep Status register */
 };
 
 /* Masks for FADT Boot Architecture Flags (boot_flags) */
@@ -264,6 +266,7 @@
 #define ACPI_FADT_NO_VGA            (1<<2)	/* 02: [V4] It is not safe to probe for VGA hardware */
 #define ACPI_FADT_NO_MSI            (1<<3)	/* 03: [V4] Message Signaled Interrupts (MSI) must not be enabled */
 #define ACPI_FADT_NO_ASPM           (1<<4)	/* 04: [V4] PCIe ASPM control must not be enabled */
+#define ACPI_FADT_NO_CMOS_RTC       (1<<5)	/* 05: [V5] No CMOS real-time clock present */
 
 #define FADT2_REVISION_ID               3
 
@@ -289,6 +292,8 @@
 #define ACPI_FADT_REMOTE_POWER_ON   (1<<17)	/* 17: [V4] System is compatible with remote power on (ACPI 3.0) */
 #define ACPI_FADT_APIC_CLUSTER      (1<<18)	/* 18: [V4] All local APICs must use cluster model (ACPI 3.0) */
 #define ACPI_FADT_APIC_PHYSICAL     (1<<19)	/* 19: [V4] All local x_aPICs must use physical dest mode (ACPI 3.0) */
+#define ACPI_FADT_HW_REDUCED        (1<<20)	/* 20: [V5] ACPI hardware is not implemented (ACPI 5.0) */
+#define ACPI_FADT_LOW_POWER_S0      (1<<21)	/* 21: [V5] S0 power savings are equal or better than S3 (ACPI 5.0) */
 
 /* Values for preferred_profile (Preferred Power Management Profiles) */
 
@@ -299,14 +304,16 @@
 	PM_WORKSTATION = 3,
 	PM_ENTERPRISE_SERVER = 4,
 	PM_SOHO_SERVER = 5,
-	PM_APPLIANCE_PC = 6
+	PM_APPLIANCE_PC = 6,
+	PM_PERFORMANCE_SERVER = 7,
+	PM_TABLET = 8
 };
 
 /* Reset to default packing */
 
 #pragma pack()
 
-#define ACPI_FADT_OFFSET(f)             (u8) ACPI_OFFSET (struct acpi_table_fadt, f)
+#define ACPI_FADT_OFFSET(f)             (u16) ACPI_OFFSET (struct acpi_table_fadt, f)
 
 /*
  * Internal table-related structures
@@ -342,6 +349,7 @@
 
 #include <acpi/actbl1.h>
 #include <acpi/actbl2.h>
+#include <acpi/actbl3.h>
 
 /*
  * Sizes of the various flavors of FADT. We need to look closely
@@ -351,12 +359,15 @@
  * FADT is the bottom line as to what the version really is.
  *
  * For reference, the values below are as follows:
- *     FADT V1  size: 0x74
- *     FADT V2  size: 0x84
- *     FADT V3+ size: 0xF4
+ *     FADT V1  size: 0x074
+ *     FADT V2  size: 0x084
+ *     FADT V3  size: 0x0F4
+ *     FADT V4  size: 0x0F4
+ *     FADT V5  size: 0x10C
  */
 #define ACPI_FADT_V1_SIZE       (u32) (ACPI_FADT_OFFSET (flags) + 4)
 #define ACPI_FADT_V2_SIZE       (u32) (ACPI_FADT_OFFSET (reserved4[0]) + 3)
-#define ACPI_FADT_V3_SIZE       (u32) (sizeof (struct acpi_table_fadt))
+#define ACPI_FADT_V3_SIZE       (u32) (ACPI_FADT_OFFSET (sleep_control))
+#define ACPI_FADT_V5_SIZE       (u32) (sizeof (struct acpi_table_fadt))
 
 #endif				/* __ACTBL_H__ */
diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h
index 7504bc9..71e747b 100644
--- a/include/acpi/actbl1.h
+++ b/include/acpi/actbl1.h
@@ -228,7 +228,8 @@
 	ACPI_EINJ_EXECUTE_OPERATION = 5,
 	ACPI_EINJ_CHECK_BUSY_STATUS = 6,
 	ACPI_EINJ_GET_COMMAND_STATUS = 7,
-	ACPI_EINJ_ACTION_RESERVED = 8,	/* 8 and greater are reserved */
+	ACPI_EINJ_SET_ERROR_TYPE_WITH_ADDRESS = 8,
+	ACPI_EINJ_ACTION_RESERVED = 9,	/* 9 and greater are reserved */
 	ACPI_EINJ_TRIGGER_ERROR = 0xFF	/* Except for this value */
 };
 
@@ -240,7 +241,27 @@
 	ACPI_EINJ_WRITE_REGISTER = 2,
 	ACPI_EINJ_WRITE_REGISTER_VALUE = 3,
 	ACPI_EINJ_NOOP = 4,
-	ACPI_EINJ_INSTRUCTION_RESERVED = 5	/* 5 and greater are reserved */
+	ACPI_EINJ_FLUSH_CACHELINE = 5,
+	ACPI_EINJ_INSTRUCTION_RESERVED = 6	/* 6 and greater are reserved */
+};
+
+struct acpi_einj_error_type_with_addr {
+	u32 error_type;
+	u32 vendor_struct_offset;
+	u32 flags;
+	u32 apic_id;
+	u64 address;
+	u64 range;
+	u32 pcie_id;
+};
+
+struct acpi_einj_vendor {
+	u32 length;
+	u32 pcie_id;
+	u16 vendor_id;
+	u16 device_id;
+	u8 revision_id;
+	u8 reserved[3];
 };
 
 /* EINJ Trigger Error Action Table */
@@ -275,6 +296,7 @@
 #define ACPI_EINJ_PLATFORM_CORRECTABLE      (1<<9)
 #define ACPI_EINJ_PLATFORM_UNCORRECTABLE    (1<<10)
 #define ACPI_EINJ_PLATFORM_FATAL            (1<<11)
+#define ACPI_EINJ_VENDOR_DEFINED            (1<<31)
 
 /*******************************************************************************
  *
@@ -631,7 +653,9 @@
 	ACPI_MADT_TYPE_INTERRUPT_SOURCE = 8,
 	ACPI_MADT_TYPE_LOCAL_X2APIC = 9,
 	ACPI_MADT_TYPE_LOCAL_X2APIC_NMI = 10,
-	ACPI_MADT_TYPE_RESERVED = 11	/* 11 and greater are reserved */
+	ACPI_MADT_TYPE_GENERIC_INTERRUPT = 11,
+	ACPI_MADT_TYPE_GENERIC_DISTRIBUTOR = 12,
+	ACPI_MADT_TYPE_RESERVED = 13	/* 13 and greater are reserved */
 };
 
 /*
@@ -752,11 +776,36 @@
 	u8 reserved[3];
 };
 
+/* 11: Generic Interrupt (ACPI 5.0) */
+
+struct acpi_madt_generic_interrupt {
+	struct acpi_subtable_header header;
+	u16 reserved;		/* Reserved - must be zero */
+	u32 gic_id;
+	u32 uid;
+	u32 flags;
+	u32 parking_version;
+	u32 performance_interrupt;
+	u64 parked_address;
+	u64 base_address;
+};
+
+/* 12: Generic Distributor (ACPI 5.0) */
+
+struct acpi_madt_generic_distributor {
+	struct acpi_subtable_header header;
+	u16 reserved;		/* Reserved - must be zero */
+	u32 gic_id;
+	u64 base_address;
+	u32 global_irq_base;
+	u32 reserved2;		/* Reserved - must be zero */
+};
+
 /*
  * Common flags fields for MADT subtables
  */
 
-/* MADT Local APIC flags (lapic_flags) */
+/* MADT Local APIC flags (lapic_flags) and GIC flags */
 
 #define ACPI_MADT_ENABLED           (1)	/* 00: Processor is usable if set */
 
diff --git a/include/acpi/actbl3.h b/include/acpi/actbl3.h
new file mode 100644
index 0000000..c22ce80
--- /dev/null
+++ b/include/acpi/actbl3.h
@@ -0,0 +1,552 @@
+/******************************************************************************
+ *
+ * Name: actbl3.h - ACPI Table Definitions
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2011, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#ifndef __ACTBL3_H__
+#define __ACTBL3_H__
+
+/*******************************************************************************
+ *
+ * Additional ACPI Tables (3)
+ *
+ * These tables are not consumed directly by the ACPICA subsystem, but are
+ * included here to support device drivers and the AML disassembler.
+ *
+ * The tables in this file are fully defined within the ACPI specification.
+ *
+ ******************************************************************************/
+
+/*
+ * Values for description table header signatures for tables defined in this
+ * file. Useful because they make it more difficult to inadvertently type in
+ * the wrong signature.
+ */
+#define ACPI_SIG_BGRT           "BGRT"	/* Boot Graphics Resource Table */
+#define ACPI_SIG_DRTM           "DRTM"	/* Dynamic Root of Trust for Measurement table */
+#define ACPI_SIG_FPDT           "FPDT"	/* Firmware Performance Data Table */
+#define ACPI_SIG_GTDT           "GTDT"	/* Generic Timer Description Table */
+#define ACPI_SIG_MPST           "MPST"	/* Memory Power State Table */
+#define ACPI_SIG_PCCT           "PCCT"	/* Platform Communications Channel Table */
+#define ACPI_SIG_PMTT           "PMTT"	/* Platform Memory Topology Table */
+#define ACPI_SIG_RASF           "RASF"	/* RAS Feature table */
+
+#define ACPI_SIG_S3PT           "S3PT"	/* S3 Performance (sub)Table */
+#define ACPI_SIG_PCCS           "PCC"	/* PCC Shared Memory Region */
+
+/* Reserved table signatures */
+
+#define ACPI_SIG_CSRT           "CSRT"	/* Core System Resources Table */
+#define ACPI_SIG_DBG2           "DBG2"	/* Debug Port table 2 */
+#define ACPI_SIG_MATR           "MATR"	/* Memory Address Translation Table */
+#define ACPI_SIG_MSDM           "MSDM"	/* Microsoft Data Management Table */
+#define ACPI_SIG_WPBT           "WPBT"	/* Windows Platform Binary Table */
+
+/*
+ * All tables must be byte-packed to match the ACPI specification, since
+ * the tables are provided by the system BIOS.
+ */
+#pragma pack(1)
+
+/*
+ * Note about bitfields: The u8 type is used for bitfields in ACPI tables.
+ * This is the only type that is even remotely portable. Anything else is not
+ * portable, so do not use any other bitfield types.
+ */
+
+/*******************************************************************************
+ *
+ * BGRT - Boot Graphics Resource Table (ACPI 5.0)
+ *        Version 1
+ *
+ ******************************************************************************/
+
+struct acpi_table_bgrt {
+	struct acpi_table_header header;	/* Common ACPI table header */
+	u16 version;
+	u8 status;
+	u8 image_type;
+	u64 image_address;
+	u32 image_offset_x;
+	u32 image_offset_y;
+};
+
+/*******************************************************************************
+ *
+ * DRTM - Dynamic Root of Trust for Measurement table
+ *
+ ******************************************************************************/
+
+struct acpi_table_drtm {
+	struct acpi_table_header header;	/* Common ACPI table header */
+	u64 entry_base_address;
+	u64 entry_length;
+	u32 entry_address32;
+	u64 entry_address64;
+	u64 exit_address;
+	u64 log_area_address;
+	u32 log_area_length;
+	u64 arch_dependent_address;
+	u32 flags;
+};
+
+/* 1) Validated Tables List */
+
+struct acpi_drtm_vtl_list {
+	u32 validated_table_list_count;
+};
+
+/* 2) Resources List */
+
+struct acpi_drtm_resource_list {
+	u32 resource_list_count;
+};
+
+/* 3) Platform-specific Identifiers List */
+
+struct acpi_drtm_id_list {
+	u32 id_list_count;
+};
+
+/*******************************************************************************
+ *
+ * FPDT - Firmware Performance Data Table (ACPI 5.0)
+ *        Version 1
+ *
+ ******************************************************************************/
+
+struct acpi_table_fpdt {
+	struct acpi_table_header header;	/* Common ACPI table header */
+};
+
+/* FPDT subtable header */
+
+struct acpi_fpdt_header {
+	u16 type;
+	u8 length;
+	u8 revision;
+};
+
+/* Values for Type field above */
+
+enum acpi_fpdt_type {
+	ACPI_FPDT_TYPE_BOOT = 0,
+	ACPI_FPDT_TYPE_S3PERF = 1,
+};
+
+/*
+ * FPDT subtables
+ */
+
+/* 0: Firmware Basic Boot Performance Record */
+
+struct acpi_fpdt_boot {
+	struct acpi_fpdt_header header;
+	u8 reserved[4];
+	u64 reset_end;
+	u64 load_start;
+	u64 startup_start;
+	u64 exit_services_entry;
+	u64 exit_services_exit;
+};
+
+/* 1: S3 Performance Table Pointer Record */
+
+struct acpi_fpdt_s3pt_ptr {
+	struct acpi_fpdt_header header;
+	u8 reserved[4];
+	u64 address;
+};
+
+/*
+ * S3PT - S3 Performance Table. This table is pointed to by the
+ * FPDT S3 Pointer Record above.
+ */
+struct acpi_table_s3pt {
+	u8 signature[4];	/* "S3PT" */
+	u32 length;
+};
+
+/*
+ * S3PT Subtables
+ */
+struct acpi_s3pt_header {
+	u16 type;
+	u8 length;
+	u8 revision;
+};
+
+/* Values for Type field above */
+
+enum acpi_s3pt_type {
+	ACPI_S3PT_TYPE_RESUME = 0,
+	ACPI_S3PT_TYPE_SUSPEND = 1,
+};
+
+struct acpi_s3pt_resume {
+	struct acpi_s3pt_header header;
+	u32 resume_count;
+	u64 full_resume;
+	u64 average_resume;
+};
+
+struct acpi_s3pt_suspend {
+	struct acpi_s3pt_header header;
+	u64 suspend_start;
+	u64 suspend_end;
+};
+
+/*******************************************************************************
+ *
+ * GTDT - Generic Timer Description Table (ACPI 5.0)
+ *        Version 1
+ *
+ ******************************************************************************/
+
+struct acpi_table_gtdt {
+	struct acpi_table_header header;	/* Common ACPI table header */
+	u64 address;
+	u32 flags;
+	u32 secure_pl1_interrupt;
+	u32 secure_pl1_flags;
+	u32 non_secure_pl1_interrupt;
+	u32 non_secure_pl1_flags;
+	u32 virtual_timer_interrupt;
+	u32 virtual_timer_flags;
+	u32 non_secure_pl2_interrupt;
+	u32 non_secure_pl2_flags;
+};
+
+/* Values for Flags field above */
+
+#define ACPI_GTDT_MAPPED_BLOCK_PRESENT      1
+
+/* Values for all "TimerFlags" fields above */
+
+#define ACPI_GTDT_INTERRUPT_MODE            1
+#define ACPI_GTDT_INTERRUPT_POLARITY        2
+
+/*******************************************************************************
+ *
+ * MPST - Memory Power State Table (ACPI 5.0)
+ *        Version 1
+ *
+ ******************************************************************************/
+
+#define ACPI_MPST_CHANNEL_INFO \
+	u16                             reserved1; \
+	u8                              channel_id; \
+	u8                              reserved2; \
+	u16                             power_node_count;
+
+/* Main table */
+
+struct acpi_table_mpst {
+	struct acpi_table_header header;	/* Common ACPI table header */
+	 ACPI_MPST_CHANNEL_INFO	/* Platform Communication Channel */
+};
+
+/* Memory Platform Communication Channel Info */
+
+struct acpi_mpst_channel {
+	ACPI_MPST_CHANNEL_INFO	/* Platform Communication Channel */
+};
+
+/* Memory Power Node Structure */
+
+struct acpi_mpst_power_node {
+	u8 flags;
+	u8 reserved1;
+	u16 node_id;
+	u32 length;
+	u64 range_address;
+	u64 range_length;
+	u8 num_power_states;
+	u8 num_physical_components;
+	u16 reserved2;
+};
+
+/* Values for Flags field above */
+
+#define ACPI_MPST_ENABLED               1
+#define ACPI_MPST_POWER_MANAGED         2
+#define ACPI_MPST_HOT_PLUG_CAPABLE      4
+
+/* Memory Power State Structure (follows POWER_NODE above) */
+
+struct acpi_mpst_power_state {
+	u8 power_state;
+	u8 info_index;
+};
+
+/* Physical Component ID Structure (follows POWER_STATE above) */
+
+struct acpi_mpst_component {
+	u16 component_id;
+};
+
+/* Memory Power State Characteristics Structure (follows all POWER_NODEs) */
+
+struct acpi_mpst_data_hdr {
+	u16 characteristics_count;
+};
+
+struct acpi_mpst_power_data {
+	u8 revision;
+	u8 flags;
+	u16 reserved1;
+	u32 average_power;
+	u32 power_saving;
+	u64 exit_latency;
+	u64 reserved2;
+};
+
+/* Values for Flags field above */
+
+#define ACPI_MPST_PRESERVE              1
+#define ACPI_MPST_AUTOENTRY             2
+#define ACPI_MPST_AUTOEXIT              4
+
+/* Shared Memory Region (not part of an ACPI table) */
+
+struct acpi_mpst_shared {
+	u32 signature;
+	u16 pcc_command;
+	u16 pcc_status;
+	u16 command_register;
+	u16 status_register;
+	u16 power_state_id;
+	u16 power_node_id;
+	u64 energy_consumed;
+	u64 average_power;
+};
+
+/*******************************************************************************
+ *
+ * PCCT - Platform Communications Channel Table (ACPI 5.0)
+ *        Version 1
+ *
+ ******************************************************************************/
+
+struct acpi_table_pcct {
+	struct acpi_table_header header;	/* Common ACPI table header */
+	u32 flags;
+	u32 latency;
+	u32 reserved;
+};
+
+/* Values for Flags field above */
+
+#define ACPI_PCCT_DOORBELL              1
+
+/*
+ * PCCT subtables
+ */
+
+/* 0: Generic Communications Subspace */
+
+struct acpi_pcct_subspace {
+	struct acpi_subtable_header header;
+	u8 reserved[6];
+	u64 base_address;
+	u64 length;
+	struct acpi_generic_address doorbell_register;
+	u64 preserve_mask;
+	u64 write_mask;
+};
+
+/*
+ * PCC memory structures (not part of the ACPI table)
+ */
+
+/* Shared Memory Region */
+
+struct acpi_pcct_shared_memory {
+	u32 signature;
+	u16 command;
+	u16 status;
+};
+
+/*******************************************************************************
+ *
+ * PMTT - Platform Memory Topology Table (ACPI 5.0)
+ *        Version 1
+ *
+ ******************************************************************************/
+
+struct acpi_table_pmtt {
+	struct acpi_table_header header;	/* Common ACPI table header */
+	u32 reserved;
+};
+
+/* Common header for PMTT subtables that follow main table */
+
+struct acpi_pmtt_header {
+	u8 type;
+	u8 reserved1;
+	u16 length;
+	u16 flags;
+	u16 reserved2;
+};
+
+/* Values for Type field above */
+
+#define ACPI_PMTT_TYPE_SOCKET           0
+#define ACPI_PMTT_TYPE_CONTROLLER       1
+#define ACPI_PMTT_TYPE_DIMM             2
+#define ACPI_PMTT_TYPE_RESERVED         3	/* 0x03-0xFF are reserved */
+
+/* Values for Flags field above */
+
+#define ACPI_PMTT_TOP_LEVEL             0x0001
+#define ACPI_PMTT_PHYSICAL              0x0002
+#define ACPI_PMTT_MEMORY_TYPE           0x000C
+
+/*
+ * PMTT subtables, correspond to Type in struct acpi_pmtt_header
+ */
+
+/* 0: Socket Structure */
+
+struct acpi_pmtt_socket {
+	struct acpi_pmtt_header header;
+	u16 socket_id;
+	u16 reserved;
+};
+
+/* 1: Memory Controller subtable */
+
+struct acpi_pmtt_controller {
+	struct acpi_pmtt_header header;
+	u32 read_latency;
+	u32 write_latency;
+	u32 read_bandwidth;
+	u32 write_bandwidth;
+	u16 access_width;
+	u16 alignment;
+	u16 reserved;
+	u16 domain_count;
+};
+
+/* 1a: Proximity Domain substructure */
+
+struct acpi_pmtt_domain {
+	u32 proximity_domain;
+};
+
+/* 2: Physical Component Identifier (DIMM) */
+
+struct acpi_pmtt_physical_component {
+	struct acpi_pmtt_header header;
+	u16 component_id;
+	u16 reserved;
+	u32 memory_size;
+	u32 bios_handle;
+};
+
+/*******************************************************************************
+ *
+ * RASF - RAS Feature Table (ACPI 5.0)
+ *        Version 1
+ *
+ ******************************************************************************/
+
+struct acpi_table_rasf {
+	struct acpi_table_header header;	/* Common ACPI table header */
+	u8 channel_id[12];
+};
+
+/* RASF Platform Communication Channel Shared Memory Region */
+
+struct acpi_rasf_shared_memory {
+	u32 signature;
+	u16 command;
+	u16 status;
+	u64 requested_address;
+	u64 requested_length;
+	u64 actual_address;
+	u64 actual_length;
+	u16 flags;
+	u8 speed;
+};
+
+/* Masks for Flags and Speed fields above */
+
+#define ACPI_RASF_SCRUBBER_RUNNING      1
+#define ACPI_RASF_SPEED                 (7<<1)
+
+/* Channel Commands */
+
+enum acpi_rasf_commands {
+	ACPI_RASF_GET_RAS_CAPABILITIES = 1,
+	ACPI_RASF_GET_PATROL_PARAMETERS = 2,
+	ACPI_RASF_START_PATROL_SCRUBBER = 3,
+	ACPI_RASF_STOP_PATROL_SCRUBBER = 4
+};
+
+/* Channel Command flags */
+
+#define ACPI_RASF_GENERATE_SCI          (1<<15)
+
+/* Status values */
+
+enum acpi_rasf_status {
+	ACPI_RASF_SUCCESS = 0,
+	ACPI_RASF_NOT_VALID = 1,
+	ACPI_RASF_NOT_SUPPORTED = 2,
+	ACPI_RASF_BUSY = 3,
+	ACPI_RASF_FAILED = 4,
+	ACPI_RASF_ABORTED = 5,
+	ACPI_RASF_INVALID_DATA = 6
+};
+
+/* Status flags */
+
+#define ACPI_RASF_COMMAND_COMPLETE      (1)
+#define ACPI_RASF_SCI_DOORBELL          (1<<1)
+#define ACPI_RASF_ERROR                 (1<<2)
+#define ACPI_RASF_STATUS                (0x1F<<3)
+
+/* Reset to default packing */
+
+#pragma pack()
+
+#endif				/* __ACTBL3_H__ */
diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h
index ed73f67..d5dee7c 100644
--- a/include/acpi/actypes.h
+++ b/include/acpi/actypes.h
@@ -712,8 +712,10 @@
 #define ACPI_ADR_SPACE_CMOS             (acpi_adr_space_type) 5
 #define ACPI_ADR_SPACE_PCI_BAR_TARGET   (acpi_adr_space_type) 6
 #define ACPI_ADR_SPACE_IPMI             (acpi_adr_space_type) 7
+#define ACPI_ADR_SPACE_GPIO             (acpi_adr_space_type) 8
+#define ACPI_ADR_SPACE_GSBUS            (acpi_adr_space_type) 9
 
-#define ACPI_NUM_PREDEFINED_REGIONS     8
+#define ACPI_NUM_PREDEFINED_REGIONS     10
 
 /*
  * Special Address Spaces
@@ -957,6 +959,14 @@
 
 #define ACPI_DEFAULT_HANDLER            NULL
 
+/* Special Context data for generic_serial_bus/general_purpose_io (ACPI 5.0) */
+
+struct acpi_connection_info {
+	u8 *connection;
+	u16 length;
+	u8 access_length;
+};
+
 typedef
 acpi_status(*acpi_adr_space_setup) (acpi_handle region_handle,
 				    u32 function,
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 627a3a4..3f96866 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -310,6 +310,11 @@
 					     u32 *mask, u32 req);
 extern void acpi_early_init(void);
 
+extern int acpi_nvs_register(__u64 start, __u64 size);
+
+extern int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *),
+				    void *data);
+
 #else	/* !CONFIG_ACPI */
 
 #define acpi_disabled 1
@@ -352,15 +357,18 @@
 {
 	return -1;
 }
-#endif	/* !CONFIG_ACPI */
 
-#ifdef CONFIG_ACPI_SLEEP
-int suspend_nvs_register(unsigned long start, unsigned long size);
-#else
-static inline int suspend_nvs_register(unsigned long a, unsigned long b)
+static inline int acpi_nvs_register(__u64 start, __u64 size)
 {
 	return 0;
 }
-#endif
+
+static inline int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *),
+					   void *data)
+{
+	return 0;
+}
+
+#endif	/* !CONFIG_ACPI */
 
 #endif	/*_LINUX_ACPI_H*/
diff --git a/include/linux/acpi_io.h b/include/linux/acpi_io.h
index 4afd710..b0ffa21 100644
--- a/include/linux/acpi_io.h
+++ b/include/linux/acpi_io.h
@@ -12,4 +12,7 @@
 
 void __iomem *acpi_os_get_iomem(acpi_physical_address phys, unsigned int size);
 
+int acpi_os_map_generic_address(struct acpi_generic_address *addr);
+void acpi_os_unmap_generic_address(struct acpi_generic_address *addr);
+
 #endif
diff --git a/include/linux/amba/pl08x.h b/include/linux/amba/pl08x.h
index 9eabffb..033f6aa 100644
--- a/include/linux/amba/pl08x.h
+++ b/include/linux/amba/pl08x.h
@@ -134,7 +134,7 @@
 	struct dma_async_tx_descriptor tx;
 	struct list_head node;
 	struct list_head dsg_list;
-	enum dma_data_direction	direction;
+	enum dma_transfer_direction direction;
 	dma_addr_t llis_bus;
 	struct pl08x_lli *llis_va;
 	/* Default cctl value for LLIs */
@@ -197,7 +197,7 @@
 	dma_addr_t dst_addr;
 	u32 src_cctl;
 	u32 dst_cctl;
-	enum dma_data_direction	runtime_direction;
+	enum dma_transfer_direction runtime_direction;
 	dma_cookie_t lc;
 	struct list_head pend_list;
 	struct pl08x_txd *at;
diff --git a/include/linux/audit.h b/include/linux/audit.h
index 426ab9f..9ff7a2c 100644
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -26,6 +26,7 @@
 
 #include <linux/types.h>
 #include <linux/elf-em.h>
+#include <linux/ptrace.h>
 
 /* The netlink messages for the audit system is divided into blocks:
  * 1000 - 1099 are for commanding the audit system
@@ -181,6 +182,40 @@
  * AUDIT_UNUSED_BITS is updated if need be. */
 #define AUDIT_UNUSED_BITS	0x07FFFC00
 
+/* AUDIT_FIELD_COMPARE rule list */
+#define AUDIT_COMPARE_UID_TO_OBJ_UID	1
+#define AUDIT_COMPARE_GID_TO_OBJ_GID	2
+#define AUDIT_COMPARE_EUID_TO_OBJ_UID	3
+#define AUDIT_COMPARE_EGID_TO_OBJ_GID	4
+#define AUDIT_COMPARE_AUID_TO_OBJ_UID	5
+#define AUDIT_COMPARE_SUID_TO_OBJ_UID	6
+#define AUDIT_COMPARE_SGID_TO_OBJ_GID	7
+#define AUDIT_COMPARE_FSUID_TO_OBJ_UID	8
+#define AUDIT_COMPARE_FSGID_TO_OBJ_GID	9
+
+#define AUDIT_COMPARE_UID_TO_AUID	10
+#define AUDIT_COMPARE_UID_TO_EUID	11
+#define AUDIT_COMPARE_UID_TO_FSUID	12
+#define AUDIT_COMPARE_UID_TO_SUID	13
+
+#define AUDIT_COMPARE_AUID_TO_FSUID	14
+#define AUDIT_COMPARE_AUID_TO_SUID	15
+#define AUDIT_COMPARE_AUID_TO_EUID	16
+
+#define AUDIT_COMPARE_EUID_TO_SUID	17
+#define AUDIT_COMPARE_EUID_TO_FSUID	18
+
+#define AUDIT_COMPARE_SUID_TO_FSUID	19
+
+#define AUDIT_COMPARE_GID_TO_EGID	20
+#define AUDIT_COMPARE_GID_TO_FSGID	21
+#define AUDIT_COMPARE_GID_TO_SGID	22
+
+#define AUDIT_COMPARE_EGID_TO_FSGID	23
+#define AUDIT_COMPARE_EGID_TO_SGID	24
+#define AUDIT_COMPARE_SGID_TO_FSGID	25
+
+#define AUDIT_MAX_FIELD_COMPARE		AUDIT_COMPARE_SGID_TO_FSGID
 
 /* Rule fields */
 				/* These are useful when checking the
@@ -222,6 +257,9 @@
 #define AUDIT_PERM	106
 #define AUDIT_DIR	107
 #define AUDIT_FILETYPE	108
+#define AUDIT_OBJ_UID	109
+#define AUDIT_OBJ_GID	110
+#define AUDIT_FIELD_COMPARE	111
 
 #define AUDIT_ARG0      200
 #define AUDIT_ARG1      (AUDIT_ARG0+1)
@@ -408,28 +446,24 @@
 	void				*lsm_rule;
 };
 
-#define AUDITSC_INVALID 0
-#define AUDITSC_SUCCESS 1
-#define AUDITSC_FAILURE 2
-#define AUDITSC_RESULT(x) ( ((long)(x))<0?AUDITSC_FAILURE:AUDITSC_SUCCESS )
 extern int __init audit_register_class(int class, unsigned *list);
 extern int audit_classify_syscall(int abi, unsigned syscall);
 extern int audit_classify_arch(int arch);
 #ifdef CONFIG_AUDITSYSCALL
 /* These are defined in auditsc.c */
 				/* Public API */
-extern void audit_finish_fork(struct task_struct *child);
 extern int  audit_alloc(struct task_struct *task);
-extern void audit_free(struct task_struct *task);
-extern void audit_syscall_entry(int arch,
-				int major, unsigned long a0, unsigned long a1,
-				unsigned long a2, unsigned long a3);
-extern void audit_syscall_exit(int failed, long return_code);
+extern void __audit_free(struct task_struct *task);
+extern void __audit_syscall_entry(int arch,
+				  int major, unsigned long a0, unsigned long a1,
+				  unsigned long a2, unsigned long a3);
+extern void __audit_syscall_exit(int ret_success, long ret_value);
 extern void __audit_getname(const char *name);
 extern void audit_putname(const char *name);
 extern void __audit_inode(const char *name, const struct dentry *dentry);
 extern void __audit_inode_child(const struct dentry *dentry,
 				const struct inode *parent);
+extern void __audit_seccomp(unsigned long syscall);
 extern void __audit_ptrace(struct task_struct *t);
 
 static inline int audit_dummy_context(void)
@@ -437,6 +471,27 @@
 	void *p = current->audit_context;
 	return !p || *(int *)p;
 }
+static inline void audit_free(struct task_struct *task)
+{
+	if (unlikely(task->audit_context))
+		__audit_free(task);
+}
+static inline void audit_syscall_entry(int arch, int major, unsigned long a0,
+				       unsigned long a1, unsigned long a2,
+				       unsigned long a3)
+{
+	if (unlikely(!audit_dummy_context()))
+		__audit_syscall_entry(arch, major, a0, a1, a2, a3);
+}
+static inline void audit_syscall_exit(void *pt_regs)
+{
+	if (unlikely(current->audit_context)) {
+		int success = is_syscall_success(pt_regs);
+		int return_code = regs_return_value(pt_regs);
+
+		__audit_syscall_exit(success, return_code);
+	}
+}
 static inline void audit_getname(const char *name)
 {
 	if (unlikely(!audit_dummy_context()))
@@ -453,6 +508,12 @@
 }
 void audit_core_dumps(long signr);
 
+static inline void audit_seccomp(unsigned long syscall)
+{
+	if (unlikely(!audit_dummy_context()))
+		__audit_seccomp(syscall);
+}
+
 static inline void audit_ptrace(struct task_struct *t)
 {
 	if (unlikely(!audit_dummy_context()))
@@ -463,17 +524,16 @@
 extern unsigned int audit_serial(void);
 extern int auditsc_get_stamp(struct audit_context *ctx,
 			      struct timespec *t, unsigned int *serial);
-extern int  audit_set_loginuid(struct task_struct *task, uid_t loginuid);
+extern int  audit_set_loginuid(uid_t loginuid);
 #define audit_get_loginuid(t) ((t)->loginuid)
 #define audit_get_sessionid(t) ((t)->sessionid)
 extern void audit_log_task_context(struct audit_buffer *ab);
 extern void __audit_ipc_obj(struct kern_ipc_perm *ipcp);
 extern void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode);
-extern int audit_bprm(struct linux_binprm *bprm);
-extern void audit_socketcall(int nargs, unsigned long *args);
-extern int audit_sockaddr(int len, void *addr);
+extern int __audit_bprm(struct linux_binprm *bprm);
+extern void __audit_socketcall(int nargs, unsigned long *args);
+extern int __audit_sockaddr(int len, void *addr);
 extern void __audit_fd_pair(int fd1, int fd2);
-extern int audit_set_macxattr(const char *name);
 extern void __audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr);
 extern void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout);
 extern void __audit_mq_notify(mqd_t mqdes, const struct sigevent *notification);
@@ -499,6 +559,23 @@
 	if (unlikely(!audit_dummy_context()))
 		__audit_ipc_set_perm(qbytes, uid, gid, mode);
 }
+static inline int audit_bprm(struct linux_binprm *bprm)
+{
+	if (unlikely(!audit_dummy_context()))
+		return __audit_bprm(bprm);
+	return 0;
+}
+static inline void audit_socketcall(int nargs, unsigned long *args)
+{
+	if (unlikely(!audit_dummy_context()))
+		__audit_socketcall(nargs, args);
+}
+static inline int audit_sockaddr(int len, void *addr)
+{
+	if (unlikely(!audit_dummy_context()))
+		return __audit_sockaddr(len, addr);
+	return 0;
+}
 static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
 {
 	if (unlikely(!audit_dummy_context()))
@@ -544,12 +621,11 @@
 
 extern int audit_n_rules;
 extern int audit_signals;
-#else
-#define audit_finish_fork(t)
+#else /* CONFIG_AUDITSYSCALL */
 #define audit_alloc(t) ({ 0; })
 #define audit_free(t) do { ; } while (0)
 #define audit_syscall_entry(ta,a,b,c,d,e) do { ; } while (0)
-#define audit_syscall_exit(f,r) do { ; } while (0)
+#define audit_syscall_exit(r) do { ; } while (0)
 #define audit_dummy_context() 1
 #define audit_getname(n) do { ; } while (0)
 #define audit_putname(n) do { ; } while (0)
@@ -558,6 +634,7 @@
 #define audit_inode(n,d) do { (void)(d); } while (0)
 #define audit_inode_child(i,p) do { ; } while (0)
 #define audit_core_dumps(i) do { ; } while (0)
+#define audit_seccomp(i) do { ; } while (0)
 #define auditsc_get_stamp(c,t,s) (0)
 #define audit_get_loginuid(t) (-1)
 #define audit_get_sessionid(t) (-1)
@@ -568,7 +645,6 @@
 #define audit_socketcall(n,a) ((void)0)
 #define audit_fd_pair(n,a) ((void)0)
 #define audit_sockaddr(len, addr) ({ 0; })
-#define audit_set_macxattr(n) do { ; } while (0)
 #define audit_mq_open(o,m,a) ((void)0)
 #define audit_mq_sendrecv(d,l,p,t) ((void)0)
 #define audit_mq_notify(d,n) ((void)0)
@@ -579,7 +655,7 @@
 #define audit_ptrace(t) ((void)0)
 #define audit_n_rules 0
 #define audit_signals 0
-#endif
+#endif /* CONFIG_AUDITSYSCALL */
 
 #ifdef CONFIG_AUDIT
 /* These are defined in audit.c */
diff --git a/include/linux/bcma/bcma.h b/include/linux/bcma/bcma.h
index f4b8346..83c209f 100644
--- a/include/linux/bcma/bcma.h
+++ b/include/linux/bcma/bcma.h
@@ -162,7 +162,7 @@
 
 	int (*probe)(struct bcma_device *dev);
 	void (*remove)(struct bcma_device *dev);
-	int (*suspend)(struct bcma_device *dev, pm_message_t state);
+	int (*suspend)(struct bcma_device *dev);
 	int (*resume)(struct bcma_device *dev);
 	void (*shutdown)(struct bcma_device *dev);
 
diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h
index 23f81de..712abcc 100644
--- a/include/linux/cpuidle.h
+++ b/include/linux/cpuidle.h
@@ -186,7 +186,14 @@
 extern int cpuidle_register_governor(struct cpuidle_governor *gov);
 extern void cpuidle_unregister_governor(struct cpuidle_governor *gov);
 
+#ifdef CONFIG_INTEL_IDLE
+extern int intel_idle_cpu_init(int cpu);
 #else
+static inline int intel_idle_cpu_init(int cpu) { return -1; }
+#endif
+
+#else
+static inline int intel_idle_cpu_init(int cpu) { return -1; }
 
 static inline int cpuidle_register_governor(struct cpuidle_governor *gov)
 {return 0;}
diff --git a/include/linux/digsig.h b/include/linux/digsig.h
index efae755..b01558b 100644
--- a/include/linux/digsig.h
+++ b/include/linux/digsig.h
@@ -46,7 +46,7 @@
 	char		mpi[0];
 } __packed;
 
-#if defined(CONFIG_DIGSIG) || defined(CONFIG_DIGSIG_MODULE)
+#if defined(CONFIG_SIGNATURE) || defined(CONFIG_SIGNATURE_MODULE)
 
 int digsig_verify(struct key *keyring, const char *sig, int siglen,
 					const char *digest, int digestlen);
@@ -59,6 +59,6 @@
 	return -EOPNOTSUPP;
 }
 
-#endif /* CONFIG_DIGSIG */
+#endif /* CONFIG_SIGNATURE */
 
 #endif /* _DIGSIG_H */
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 75f53f8..679b349 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -23,7 +23,6 @@
 
 #include <linux/device.h>
 #include <linux/uio.h>
-#include <linux/dma-direction.h>
 #include <linux/scatterlist.h>
 #include <linux/bitmap.h>
 #include <asm/page.h>
@@ -72,11 +71,93 @@
 	DMA_ASYNC_TX,
 	DMA_SLAVE,
 	DMA_CYCLIC,
+	DMA_INTERLEAVE,
+/* last transaction type for creation of the capabilities mask */
+	DMA_TX_TYPE_END,
 };
 
-/* last transaction type for creation of the capabilities mask */
-#define DMA_TX_TYPE_END (DMA_CYCLIC + 1)
+/**
+ * enum dma_transfer_direction - dma transfer mode and direction indicator
+ * @DMA_MEM_TO_MEM: Async/Memcpy mode
+ * @DMA_MEM_TO_DEV: Slave mode & From Memory to Device
+ * @DMA_DEV_TO_MEM: Slave mode & From Device to Memory
+ * @DMA_DEV_TO_DEV: Slave mode & From Device to Device
+ */
+enum dma_transfer_direction {
+	DMA_MEM_TO_MEM,
+	DMA_MEM_TO_DEV,
+	DMA_DEV_TO_MEM,
+	DMA_DEV_TO_DEV,
+	DMA_TRANS_NONE,
+};
 
+/**
+ * Interleaved Transfer Request
+ * ----------------------------
+ * A chunk is collection of contiguous bytes to be transfered.
+ * The gap(in bytes) between two chunks is called inter-chunk-gap(ICG).
+ * ICGs may or maynot change between chunks.
+ * A FRAME is the smallest series of contiguous {chunk,icg} pairs,
+ *  that when repeated an integral number of times, specifies the transfer.
+ * A transfer template is specification of a Frame, the number of times
+ *  it is to be repeated and other per-transfer attributes.
+ *
+ * Practically, a client driver would have ready a template for each
+ *  type of transfer it is going to need during its lifetime and
+ *  set only 'src_start' and 'dst_start' before submitting the requests.
+ *
+ *
+ *  |      Frame-1        |       Frame-2       | ~ |       Frame-'numf'  |
+ *  |====....==.===...=...|====....==.===...=...| ~ |====....==.===...=...|
+ *
+ *    ==  Chunk size
+ *    ... ICG
+ */
+
+/**
+ * struct data_chunk - Element of scatter-gather list that makes a frame.
+ * @size: Number of bytes to read from source.
+ *	  size_dst := fn(op, size_src), so doesn't mean much for destination.
+ * @icg: Number of bytes to jump after last src/dst address of this
+ *	 chunk and before first src/dst address for next chunk.
+ *	 Ignored for dst(assumed 0), if dst_inc is true and dst_sgl is false.
+ *	 Ignored for src(assumed 0), if src_inc is true and src_sgl is false.
+ */
+struct data_chunk {
+	size_t size;
+	size_t icg;
+};
+
+/**
+ * struct dma_interleaved_template - Template to convey DMAC the transfer pattern
+ *	 and attributes.
+ * @src_start: Bus address of source for the first chunk.
+ * @dst_start: Bus address of destination for the first chunk.
+ * @dir: Specifies the type of Source and Destination.
+ * @src_inc: If the source address increments after reading from it.
+ * @dst_inc: If the destination address increments after writing to it.
+ * @src_sgl: If the 'icg' of sgl[] applies to Source (scattered read).
+ *		Otherwise, source is read contiguously (icg ignored).
+ *		Ignored if src_inc is false.
+ * @dst_sgl: If the 'icg' of sgl[] applies to Destination (scattered write).
+ *		Otherwise, destination is filled contiguously (icg ignored).
+ *		Ignored if dst_inc is false.
+ * @numf: Number of frames in this template.
+ * @frame_size: Number of chunks in a frame i.e, size of sgl[].
+ * @sgl: Array of {chunk,icg} pairs that make up a frame.
+ */
+struct dma_interleaved_template {
+	dma_addr_t src_start;
+	dma_addr_t dst_start;
+	enum dma_transfer_direction dir;
+	bool src_inc;
+	bool dst_inc;
+	bool src_sgl;
+	bool dst_sgl;
+	size_t numf;
+	size_t frame_size;
+	struct data_chunk sgl[0];
+};
 
 /**
  * enum dma_ctrl_flags - DMA flags to augment operation preparation,
@@ -269,7 +350,7 @@
  * struct, if applicable.
  */
 struct dma_slave_config {
-	enum dma_data_direction direction;
+	enum dma_transfer_direction direction;
 	dma_addr_t src_addr;
 	dma_addr_t dst_addr;
 	enum dma_slave_buswidth src_addr_width;
@@ -433,6 +514,7 @@
  * @device_prep_dma_cyclic: prepare a cyclic dma operation suitable for audio.
  *	The function takes a buffer of size buf_len. The callback function will
  *	be called after period_len bytes have been transferred.
+ * @device_prep_interleaved_dma: Transfer expression in a generic way.
  * @device_control: manipulate all pending operations on a channel, returns
  *	zero or error code
  * @device_tx_status: poll for transaction completion, the optional
@@ -492,11 +574,14 @@
 
 	struct dma_async_tx_descriptor *(*device_prep_slave_sg)(
 		struct dma_chan *chan, struct scatterlist *sgl,
-		unsigned int sg_len, enum dma_data_direction direction,
+		unsigned int sg_len, enum dma_transfer_direction direction,
 		unsigned long flags);
 	struct dma_async_tx_descriptor *(*device_prep_dma_cyclic)(
 		struct dma_chan *chan, dma_addr_t buf_addr, size_t buf_len,
-		size_t period_len, enum dma_data_direction direction);
+		size_t period_len, enum dma_transfer_direction direction);
+	struct dma_async_tx_descriptor *(*device_prep_interleaved_dma)(
+		struct dma_chan *chan, struct dma_interleaved_template *xt,
+		unsigned long flags);
 	int (*device_control)(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
 		unsigned long arg);
 
@@ -522,7 +607,7 @@
 
 static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_single(
 	struct dma_chan *chan, void *buf, size_t len,
-	enum dma_data_direction dir, unsigned long flags)
+	enum dma_transfer_direction dir, unsigned long flags)
 {
 	struct scatterlist sg;
 	sg_init_one(&sg, buf, len);
diff --git a/include/linux/dw_dmac.h b/include/linux/dw_dmac.h
index 4bfe0a2..f2c64f9 100644
--- a/include/linux/dw_dmac.h
+++ b/include/linux/dw_dmac.h
@@ -127,7 +127,7 @@
 
 struct dw_cyclic_desc *dw_dma_cyclic_prep(struct dma_chan *chan,
 		dma_addr_t buf_addr, size_t buf_len, size_t period_len,
-		enum dma_data_direction direction);
+		enum dma_transfer_direction direction);
 void dw_dma_cyclic_free(struct dma_chan *chan);
 int dw_dma_cyclic_start(struct dma_chan *chan);
 void dw_dma_cyclic_stop(struct dma_chan *chan);
diff --git a/include/linux/key.h b/include/linux/key.h
index 183a6af..5253471 100644
--- a/include/linux/key.h
+++ b/include/linux/key.h
@@ -271,7 +271,7 @@
 
 extern struct key *key_lookup(key_serial_t id);
 
-static inline key_serial_t key_serial(struct key *key)
+static inline key_serial_t key_serial(const struct key *key)
 {
 	return key ? key->serial : 0;
 }
@@ -293,6 +293,9 @@
 	(rcu_dereference_protected((KEY)->payload.rcudata,		\
 				   rwsem_is_locked(&((struct key *)(KEY))->sem)))
 
+#define rcu_assign_keypointer(KEY, PAYLOAD)				\
+	(rcu_assign_pointer((KEY)->payload.rcudata, PAYLOAD))
+
 #ifdef CONFIG_SYSCTL
 extern ctl_table key_sysctls[];
 #endif
diff --git a/include/linux/kref.h b/include/linux/kref.h
index abc0120..9c07dce 100644
--- a/include/linux/kref.h
+++ b/include/linux/kref.h
@@ -17,6 +17,7 @@
 
 #include <linux/bug.h>
 #include <linux/atomic.h>
+#include <linux/kernel.h>
 
 struct kref {
 	atomic_t refcount;
diff --git a/include/linux/miscdevice.h b/include/linux/miscdevice.h
index 3208524..0549d211 100644
--- a/include/linux/miscdevice.h
+++ b/include/linux/miscdevice.h
@@ -42,6 +42,7 @@
 #define AUTOFS_MINOR		235
 #define MAPPER_CTRL_MINOR	236
 #define LOOP_CTRL_MINOR		237
+#define VHOST_NET_MINOR		238
 #define MISC_DYNAMIC_MINOR	255
 
 struct device;
diff --git a/include/linux/mtd/gpmi-nand.h b/include/linux/mtd/gpmi-nand.h
new file mode 100644
index 0000000..69b6dbf
--- /dev/null
+++ b/include/linux/mtd/gpmi-nand.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef __MACH_MXS_GPMI_NAND_H__
+#define __MACH_MXS_GPMI_NAND_H__
+
+/* The size of the resources is fixed. */
+#define GPMI_NAND_RES_SIZE	6
+
+/* Resource names for the GPMI NAND driver. */
+#define GPMI_NAND_GPMI_REGS_ADDR_RES_NAME  "GPMI NAND GPMI Registers"
+#define GPMI_NAND_GPMI_INTERRUPT_RES_NAME  "GPMI NAND GPMI Interrupt"
+#define GPMI_NAND_BCH_REGS_ADDR_RES_NAME   "GPMI NAND BCH Registers"
+#define GPMI_NAND_BCH_INTERRUPT_RES_NAME   "GPMI NAND BCH Interrupt"
+#define GPMI_NAND_DMA_CHANNELS_RES_NAME    "GPMI NAND DMA Channels"
+#define GPMI_NAND_DMA_INTERRUPT_RES_NAME   "GPMI NAND DMA Interrupt"
+
+/**
+ * struct gpmi_nand_platform_data - GPMI NAND driver platform data.
+ *
+ * This structure communicates platform-specific information to the GPMI NAND
+ * driver that can't be expressed as resources.
+ *
+ * @platform_init:           A pointer to a function the driver will call to
+ *                           initialize the platform (e.g., set up the pin mux).
+ * @min_prop_delay_in_ns:    Minimum propagation delay of GPMI signals to and
+ *                           from the NAND Flash device, in nanoseconds.
+ * @max_prop_delay_in_ns:    Maximum propagation delay of GPMI signals to and
+ *                           from the NAND Flash device, in nanoseconds.
+ * @max_chip_count:          The maximum number of chips for which the driver
+ *                           should configure the hardware. This value most
+ *                           likely reflects the number of pins that are
+ *                           connected to a NAND Flash device. If this is
+ *                           greater than the SoC hardware can support, the
+ *                           driver will print a message and fail to initialize.
+ * @partitions:              An optional pointer to an array of partition
+ *                           descriptions.
+ * @partition_count:         The number of elements in the partitions array.
+ */
+struct gpmi_nand_platform_data {
+	/* SoC hardware information. */
+	int		(*platform_init)(void);
+
+	/* NAND Flash information. */
+	unsigned int	min_prop_delay_in_ns;
+	unsigned int	max_prop_delay_in_ns;
+	unsigned int	max_chip_count;
+
+	/* Medium information. */
+	struct		mtd_partition *partitions;
+	unsigned	partition_count;
+};
+#endif
diff --git a/include/linux/netfilter/nf_conntrack_common.h b/include/linux/netfilter/nf_conntrack_common.h
index 9e3a283..0d3dd66 100644
--- a/include/linux/netfilter/nf_conntrack_common.h
+++ b/include/linux/netfilter/nf_conntrack_common.h
@@ -83,10 +83,6 @@
 	/* Conntrack is a fake untracked entry */
 	IPS_UNTRACKED_BIT = 12,
 	IPS_UNTRACKED = (1 << IPS_UNTRACKED_BIT),
-
-	/* Conntrack has a userspace helper. */
-	IPS_USERSPACE_HELPER_BIT = 13,
-	IPS_USERSPACE_HELPER = (1 << IPS_USERSPACE_HELPER_BIT),
 };
 
 /* Connection tracking event types */
diff --git a/include/linux/netfilter/xt_CT.h b/include/linux/netfilter/xt_CT.h
index 6390f09..b56e768 100644
--- a/include/linux/netfilter/xt_CT.h
+++ b/include/linux/netfilter/xt_CT.h
@@ -3,8 +3,7 @@
 
 #include <linux/types.h>
 
-#define XT_CT_NOTRACK		0x1
-#define XT_CT_USERSPACE_HELPER	0x2
+#define XT_CT_NOTRACK	0x1
 
 struct xt_ct_target_info {
 	__u16 flags;
diff --git a/include/linux/nvme.h b/include/linux/nvme.h
new file mode 100644
index 0000000..9490a00
--- /dev/null
+++ b/include/linux/nvme.h
@@ -0,0 +1,434 @@
+/*
+ * Definitions for the NVM Express interface
+ * Copyright (c) 2011, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef _LINUX_NVME_H
+#define _LINUX_NVME_H
+
+#include <linux/types.h>
+
+struct nvme_bar {
+	__u64			cap;	/* Controller Capabilities */
+	__u32			vs;	/* Version */
+	__u32			intms;	/* Interrupt Mask Set */
+	__u32			intmc;	/* Interrupt Mask Clear */
+	__u32			cc;	/* Controller Configuration */
+	__u32			rsvd1;	/* Reserved */
+	__u32			csts;	/* Controller Status */
+	__u32			rsvd2;	/* Reserved */
+	__u32			aqa;	/* Admin Queue Attributes */
+	__u64			asq;	/* Admin SQ Base Address */
+	__u64			acq;	/* Admin CQ Base Address */
+};
+
+#define NVME_CAP_TIMEOUT(cap)	(((cap) >> 24) & 0xff)
+#define NVME_CAP_STRIDE(cap)	(((cap) >> 32) & 0xf)
+
+enum {
+	NVME_CC_ENABLE		= 1 << 0,
+	NVME_CC_CSS_NVM		= 0 << 4,
+	NVME_CC_MPS_SHIFT	= 7,
+	NVME_CC_ARB_RR		= 0 << 11,
+	NVME_CC_ARB_WRRU	= 1 << 11,
+	NVME_CC_ARB_VS		= 7 << 11,
+	NVME_CC_SHN_NONE	= 0 << 14,
+	NVME_CC_SHN_NORMAL	= 1 << 14,
+	NVME_CC_SHN_ABRUPT	= 2 << 14,
+	NVME_CC_IOSQES		= 6 << 16,
+	NVME_CC_IOCQES		= 4 << 20,
+	NVME_CSTS_RDY		= 1 << 0,
+	NVME_CSTS_CFS		= 1 << 1,
+	NVME_CSTS_SHST_NORMAL	= 0 << 2,
+	NVME_CSTS_SHST_OCCUR	= 1 << 2,
+	NVME_CSTS_SHST_CMPLT	= 2 << 2,
+};
+
+struct nvme_id_power_state {
+	__le16			max_power;	/* centiwatts */
+	__u16			rsvd2;
+	__le32			entry_lat;	/* microseconds */
+	__le32			exit_lat;	/* microseconds */
+	__u8			read_tput;
+	__u8			read_lat;
+	__u8			write_tput;
+	__u8			write_lat;
+	__u8			rsvd16[16];
+};
+
+#define NVME_VS(major, minor)	(major << 16 | minor)
+
+struct nvme_id_ctrl {
+	__le16			vid;
+	__le16			ssvid;
+	char			sn[20];
+	char			mn[40];
+	char			fr[8];
+	__u8			rab;
+	__u8			ieee[3];
+	__u8			mic;
+	__u8			mdts;
+	__u8			rsvd78[178];
+	__le16			oacs;
+	__u8			acl;
+	__u8			aerl;
+	__u8			frmw;
+	__u8			lpa;
+	__u8			elpe;
+	__u8			npss;
+	__u8			rsvd264[248];
+	__u8			sqes;
+	__u8			cqes;
+	__u8			rsvd514[2];
+	__le32			nn;
+	__le16			oncs;
+	__le16			fuses;
+	__u8			fna;
+	__u8			vwc;
+	__le16			awun;
+	__le16			awupf;
+	__u8			rsvd530[1518];
+	struct nvme_id_power_state	psd[32];
+	__u8			vs[1024];
+};
+
+struct nvme_lbaf {
+	__le16			ms;
+	__u8			ds;
+	__u8			rp;
+};
+
+struct nvme_id_ns {
+	__le64			nsze;
+	__le64			ncap;
+	__le64			nuse;
+	__u8			nsfeat;
+	__u8			nlbaf;
+	__u8			flbas;
+	__u8			mc;
+	__u8			dpc;
+	__u8			dps;
+	__u8			rsvd30[98];
+	struct nvme_lbaf	lbaf[16];
+	__u8			rsvd192[192];
+	__u8			vs[3712];
+};
+
+enum {
+	NVME_NS_FEAT_THIN	= 1 << 0,
+	NVME_LBAF_RP_BEST	= 0,
+	NVME_LBAF_RP_BETTER	= 1,
+	NVME_LBAF_RP_GOOD	= 2,
+	NVME_LBAF_RP_DEGRADED	= 3,
+};
+
+struct nvme_lba_range_type {
+	__u8			type;
+	__u8			attributes;
+	__u8			rsvd2[14];
+	__u64			slba;
+	__u64			nlb;
+	__u8			guid[16];
+	__u8			rsvd48[16];
+};
+
+enum {
+	NVME_LBART_TYPE_FS	= 0x01,
+	NVME_LBART_TYPE_RAID	= 0x02,
+	NVME_LBART_TYPE_CACHE	= 0x03,
+	NVME_LBART_TYPE_SWAP	= 0x04,
+
+	NVME_LBART_ATTRIB_TEMP	= 1 << 0,
+	NVME_LBART_ATTRIB_HIDE	= 1 << 1,
+};
+
+/* I/O commands */
+
+enum nvme_opcode {
+	nvme_cmd_flush		= 0x00,
+	nvme_cmd_write		= 0x01,
+	nvme_cmd_read		= 0x02,
+	nvme_cmd_write_uncor	= 0x04,
+	nvme_cmd_compare	= 0x05,
+	nvme_cmd_dsm		= 0x09,
+};
+
+struct nvme_common_command {
+	__u8			opcode;
+	__u8			flags;
+	__u16			command_id;
+	__le32			nsid;
+	__u32			cdw2[2];
+	__le64			metadata;
+	__le64			prp1;
+	__le64			prp2;
+	__u32			cdw10[6];
+};
+
+struct nvme_rw_command {
+	__u8			opcode;
+	__u8			flags;
+	__u16			command_id;
+	__le32			nsid;
+	__u64			rsvd2;
+	__le64			metadata;
+	__le64			prp1;
+	__le64			prp2;
+	__le64			slba;
+	__le16			length;
+	__le16			control;
+	__le32			dsmgmt;
+	__le32			reftag;
+	__le16			apptag;
+	__le16			appmask;
+};
+
+enum {
+	NVME_RW_LR			= 1 << 15,
+	NVME_RW_FUA			= 1 << 14,
+	NVME_RW_DSM_FREQ_UNSPEC		= 0,
+	NVME_RW_DSM_FREQ_TYPICAL	= 1,
+	NVME_RW_DSM_FREQ_RARE		= 2,
+	NVME_RW_DSM_FREQ_READS		= 3,
+	NVME_RW_DSM_FREQ_WRITES		= 4,
+	NVME_RW_DSM_FREQ_RW		= 5,
+	NVME_RW_DSM_FREQ_ONCE		= 6,
+	NVME_RW_DSM_FREQ_PREFETCH	= 7,
+	NVME_RW_DSM_FREQ_TEMP		= 8,
+	NVME_RW_DSM_LATENCY_NONE	= 0 << 4,
+	NVME_RW_DSM_LATENCY_IDLE	= 1 << 4,
+	NVME_RW_DSM_LATENCY_NORM	= 2 << 4,
+	NVME_RW_DSM_LATENCY_LOW		= 3 << 4,
+	NVME_RW_DSM_SEQ_REQ		= 1 << 6,
+	NVME_RW_DSM_COMPRESSED		= 1 << 7,
+};
+
+/* Admin commands */
+
+enum nvme_admin_opcode {
+	nvme_admin_delete_sq		= 0x00,
+	nvme_admin_create_sq		= 0x01,
+	nvme_admin_get_log_page		= 0x02,
+	nvme_admin_delete_cq		= 0x04,
+	nvme_admin_create_cq		= 0x05,
+	nvme_admin_identify		= 0x06,
+	nvme_admin_abort_cmd		= 0x08,
+	nvme_admin_set_features		= 0x09,
+	nvme_admin_get_features		= 0x0a,
+	nvme_admin_async_event		= 0x0c,
+	nvme_admin_activate_fw		= 0x10,
+	nvme_admin_download_fw		= 0x11,
+	nvme_admin_format_nvm		= 0x80,
+	nvme_admin_security_send	= 0x81,
+	nvme_admin_security_recv	= 0x82,
+};
+
+enum {
+	NVME_QUEUE_PHYS_CONTIG	= (1 << 0),
+	NVME_CQ_IRQ_ENABLED	= (1 << 1),
+	NVME_SQ_PRIO_URGENT	= (0 << 1),
+	NVME_SQ_PRIO_HIGH	= (1 << 1),
+	NVME_SQ_PRIO_MEDIUM	= (2 << 1),
+	NVME_SQ_PRIO_LOW	= (3 << 1),
+	NVME_FEAT_ARBITRATION	= 0x01,
+	NVME_FEAT_POWER_MGMT	= 0x02,
+	NVME_FEAT_LBA_RANGE	= 0x03,
+	NVME_FEAT_TEMP_THRESH	= 0x04,
+	NVME_FEAT_ERR_RECOVERY	= 0x05,
+	NVME_FEAT_VOLATILE_WC	= 0x06,
+	NVME_FEAT_NUM_QUEUES	= 0x07,
+	NVME_FEAT_IRQ_COALESCE	= 0x08,
+	NVME_FEAT_IRQ_CONFIG	= 0x09,
+	NVME_FEAT_WRITE_ATOMIC	= 0x0a,
+	NVME_FEAT_ASYNC_EVENT	= 0x0b,
+	NVME_FEAT_SW_PROGRESS	= 0x0c,
+};
+
+struct nvme_identify {
+	__u8			opcode;
+	__u8			flags;
+	__u16			command_id;
+	__le32			nsid;
+	__u64			rsvd2[2];
+	__le64			prp1;
+	__le64			prp2;
+	__le32			cns;
+	__u32			rsvd11[5];
+};
+
+struct nvme_features {
+	__u8			opcode;
+	__u8			flags;
+	__u16			command_id;
+	__le32			nsid;
+	__u64			rsvd2[2];
+	__le64			prp1;
+	__le64			prp2;
+	__le32			fid;
+	__le32			dword11;
+	__u32			rsvd12[4];
+};
+
+struct nvme_create_cq {
+	__u8			opcode;
+	__u8			flags;
+	__u16			command_id;
+	__u32			rsvd1[5];
+	__le64			prp1;
+	__u64			rsvd8;
+	__le16			cqid;
+	__le16			qsize;
+	__le16			cq_flags;
+	__le16			irq_vector;
+	__u32			rsvd12[4];
+};
+
+struct nvme_create_sq {
+	__u8			opcode;
+	__u8			flags;
+	__u16			command_id;
+	__u32			rsvd1[5];
+	__le64			prp1;
+	__u64			rsvd8;
+	__le16			sqid;
+	__le16			qsize;
+	__le16			sq_flags;
+	__le16			cqid;
+	__u32			rsvd12[4];
+};
+
+struct nvme_delete_queue {
+	__u8			opcode;
+	__u8			flags;
+	__u16			command_id;
+	__u32			rsvd1[9];
+	__le16			qid;
+	__u16			rsvd10;
+	__u32			rsvd11[5];
+};
+
+struct nvme_download_firmware {
+	__u8			opcode;
+	__u8			flags;
+	__u16			command_id;
+	__u32			rsvd1[5];
+	__le64			prp1;
+	__le64			prp2;
+	__le32			numd;
+	__le32			offset;
+	__u32			rsvd12[4];
+};
+
+struct nvme_command {
+	union {
+		struct nvme_common_command common;
+		struct nvme_rw_command rw;
+		struct nvme_identify identify;
+		struct nvme_features features;
+		struct nvme_create_cq create_cq;
+		struct nvme_create_sq create_sq;
+		struct nvme_delete_queue delete_queue;
+		struct nvme_download_firmware dlfw;
+	};
+};
+
+enum {
+	NVME_SC_SUCCESS			= 0x0,
+	NVME_SC_INVALID_OPCODE		= 0x1,
+	NVME_SC_INVALID_FIELD		= 0x2,
+	NVME_SC_CMDID_CONFLICT		= 0x3,
+	NVME_SC_DATA_XFER_ERROR		= 0x4,
+	NVME_SC_POWER_LOSS		= 0x5,
+	NVME_SC_INTERNAL		= 0x6,
+	NVME_SC_ABORT_REQ		= 0x7,
+	NVME_SC_ABORT_QUEUE		= 0x8,
+	NVME_SC_FUSED_FAIL		= 0x9,
+	NVME_SC_FUSED_MISSING		= 0xa,
+	NVME_SC_INVALID_NS		= 0xb,
+	NVME_SC_LBA_RANGE		= 0x80,
+	NVME_SC_CAP_EXCEEDED		= 0x81,
+	NVME_SC_NS_NOT_READY		= 0x82,
+	NVME_SC_CQ_INVALID		= 0x100,
+	NVME_SC_QID_INVALID		= 0x101,
+	NVME_SC_QUEUE_SIZE		= 0x102,
+	NVME_SC_ABORT_LIMIT		= 0x103,
+	NVME_SC_ABORT_MISSING		= 0x104,
+	NVME_SC_ASYNC_LIMIT		= 0x105,
+	NVME_SC_FIRMWARE_SLOT		= 0x106,
+	NVME_SC_FIRMWARE_IMAGE		= 0x107,
+	NVME_SC_INVALID_VECTOR		= 0x108,
+	NVME_SC_INVALID_LOG_PAGE	= 0x109,
+	NVME_SC_INVALID_FORMAT		= 0x10a,
+	NVME_SC_BAD_ATTRIBUTES		= 0x180,
+	NVME_SC_WRITE_FAULT		= 0x280,
+	NVME_SC_READ_ERROR		= 0x281,
+	NVME_SC_GUARD_CHECK		= 0x282,
+	NVME_SC_APPTAG_CHECK		= 0x283,
+	NVME_SC_REFTAG_CHECK		= 0x284,
+	NVME_SC_COMPARE_FAILED		= 0x285,
+	NVME_SC_ACCESS_DENIED		= 0x286,
+};
+
+struct nvme_completion {
+	__le32	result;		/* Used by admin commands to return data */
+	__u32	rsvd;
+	__le16	sq_head;	/* how much of this queue may be reclaimed */
+	__le16	sq_id;		/* submission queue that generated this entry */
+	__u16	command_id;	/* of the command which completed */
+	__le16	status;		/* did the command fail, and if so, why? */
+};
+
+struct nvme_user_io {
+	__u8	opcode;
+	__u8	flags;
+	__u16	control;
+	__u16	nblocks;
+	__u16	rsvd;
+	__u64	metadata;
+	__u64	addr;
+	__u64	slba;
+	__u32	dsmgmt;
+	__u32	reftag;
+	__u16	apptag;
+	__u16	appmask;
+};
+
+struct nvme_admin_cmd {
+	__u8	opcode;
+	__u8	flags;
+	__u16	rsvd1;
+	__u32	nsid;
+	__u32	cdw2;
+	__u32	cdw3;
+	__u64	metadata;
+	__u64	addr;
+	__u32	metadata_len;
+	__u32	data_len;
+	__u32	cdw10;
+	__u32	cdw11;
+	__u32	cdw12;
+	__u32	cdw13;
+	__u32	cdw14;
+	__u32	cdw15;
+	__u32	timeout_ms;
+	__u32	result;
+};
+
+#define NVME_IOCTL_ID		_IO('N', 0x40)
+#define NVME_IOCTL_ADMIN_CMD	_IOWR('N', 0x41, struct nvme_admin_cmd)
+#define NVME_IOCTL_SUBMIT_IO	_IOW('N', 0x42, struct nvme_user_io)
+
+#endif /* _LINUX_NVME_H */
diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
index a27e56c..c2f1f6a 100644
--- a/include/linux/ptrace.h
+++ b/include/linux/ptrace.h
@@ -112,6 +112,7 @@
 
 #include <linux/compiler.h>		/* For unlikely.  */
 #include <linux/sched.h>		/* For struct task_struct.  */
+#include <linux/err.h>			/* for IS_ERR_VALUE */
 
 
 extern long arch_ptrace(struct task_struct *child, long request,
@@ -266,6 +267,15 @@
 #define force_successful_syscall_return() do { } while (0)
 #endif
 
+#ifndef is_syscall_success
+/*
+ * On most systems we can tell if a syscall is a success based on if the retval
+ * is an error value.  On some systems like ia64 and powerpc they have different
+ * indicators of success/failure and must define their own.
+ */
+#define is_syscall_success(regs) (!IS_ERR_VALUE((unsigned long)(regs_return_value(regs))))
+#endif
+
 /*
  * <asm/ptrace.h> should define the following things inside #ifdef __KERNEL__.
  *
diff --git a/include/linux/sh_dma.h b/include/linux/sh_dma.h
index cb2dd11..8cd7fe5 100644
--- a/include/linux/sh_dma.h
+++ b/include/linux/sh_dma.h
@@ -30,7 +30,7 @@
 	struct sh_dmae_regs hw;
 	struct list_head node;
 	struct dma_async_tx_descriptor async_tx;
-	enum dma_data_direction direction;
+	enum dma_transfer_direction direction;
 	dma_cookie_t cookie;
 	size_t partial;
 	int chunks;
@@ -48,6 +48,7 @@
 	unsigned int	offset;
 	unsigned int	dmars;
 	unsigned int	dmars_bit;
+	unsigned int	chclr_offset;
 };
 
 struct sh_dmae_pdata {
@@ -68,6 +69,7 @@
 	unsigned int dmaor_is_32bit:1;
 	unsigned int needs_tend_set:1;
 	unsigned int no_dmars:1;
+	unsigned int chclr_present:1;
 };
 
 /* DMA register */
diff --git a/include/linux/sirfsoc_dma.h b/include/linux/sirfsoc_dma.h
new file mode 100644
index 0000000..29d9593
--- /dev/null
+++ b/include/linux/sirfsoc_dma.h
@@ -0,0 +1,6 @@
+#ifndef _SIRFSOC_DMA_H_
+#define _SIRFSOC_DMA_H_
+
+bool sirfsoc_dma_filter_id(struct dma_chan *chan, void *chan_id);
+
+#endif
diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h
index ecdaeb9..5cf6850 100644
--- a/include/linux/tty_driver.h
+++ b/include/linux/tty_driver.h
@@ -312,7 +312,6 @@
 	 */
 	struct tty_struct **ttys;
 	struct ktermios **termios;
-	struct ktermios **termios_locked;
 	void *driver_state;
 
 	/*
diff --git a/include/media/tuner.h b/include/media/tuner.h
index 89c290b..29e1920 100644
--- a/include/media/tuner.h
+++ b/include/media/tuner.h
@@ -127,7 +127,6 @@
 #define TUNER_PHILIPS_FMD1216MEX_MK3	78
 #define TUNER_PHILIPS_FM1216MK5		79
 #define TUNER_PHILIPS_FQ1216LME_MK3	80	/* Active loopthrough, no FM */
-#define TUNER_XC4000			81	/* Xceive Silicon Tuner */
 
 #define TUNER_PARTSNIC_PTI_5NF05	81
 #define TUNER_PHILIPS_CU1216L           82
@@ -136,6 +135,8 @@
 #define TUNER_PHILIPS_FQ1236_MK5	85	/* NTSC, TDA9885, no FM radio */
 #define TUNER_TENA_TNF_5337		86
 
+#define TUNER_XC4000			87	/* Xceive Silicon Tuner */
+
 /* tv card specific */
 #define TDA9887_PRESENT 		(1<<0)
 #define TDA9887_PORT1_INACTIVE 		(1<<1)
diff --git a/include/net/flow.h b/include/net/flow.h
index da1f064..9b58243 100644
--- a/include/net/flow.h
+++ b/include/net/flow.h
@@ -78,7 +78,7 @@
 				      __u32 mark, __u8 tos, __u8 scope,
 				      __u8 proto, __u8 flags,
 				      __be32 daddr, __be32 saddr,
-				      __be16 dport, __be32 sport)
+				      __be16 dport, __be16 sport)
 {
 	fl4->flowi4_oif = oif;
 	fl4->flowi4_iif = 0;
diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h
index 5d1a758..6a3922f 100644
--- a/include/scsi/libfc.h
+++ b/include/scsi/libfc.h
@@ -857,7 +857,7 @@
 	enum fc_lport_state	       state;
 	unsigned long		       boot_time;
 	struct fc_host_statistics      host_stats;
-	struct fcoe_dev_stats	       *dev_stats;
+	struct fcoe_dev_stats __percpu *dev_stats;
 	u8			       retry_count;
 
 	/* Fabric information */
diff --git a/include/target/target_core_backend.h b/include/target/target_core_backend.h
new file mode 100644
index 0000000..4866499
--- /dev/null
+++ b/include/target/target_core_backend.h
@@ -0,0 +1,65 @@
+#ifndef TARGET_CORE_BACKEND_H
+#define TARGET_CORE_BACKEND_H
+
+#define TRANSPORT_PLUGIN_PHBA_PDEV		1
+#define TRANSPORT_PLUGIN_VHBA_PDEV		2
+#define TRANSPORT_PLUGIN_VHBA_VDEV		3
+
+struct se_subsystem_api {
+	struct list_head sub_api_list;
+
+	char name[16];
+	struct module *owner;
+
+	u8 transport_type;
+
+	unsigned int fua_write_emulated : 1;
+	unsigned int write_cache_emulated : 1;
+
+	int (*attach_hba)(struct se_hba *, u32);
+	void (*detach_hba)(struct se_hba *);
+	int (*pmode_enable_hba)(struct se_hba *, unsigned long);
+	void *(*allocate_virtdevice)(struct se_hba *, const char *);
+	struct se_device *(*create_virtdevice)(struct se_hba *,
+				struct se_subsystem_dev *, void *);
+	void (*free_device)(void *);
+	int (*transport_complete)(struct se_task *task);
+	struct se_task *(*alloc_task)(unsigned char *cdb);
+	int (*do_task)(struct se_task *);
+	int (*do_discard)(struct se_device *, sector_t, u32);
+	void (*do_sync_cache)(struct se_task *);
+	void (*free_task)(struct se_task *);
+	ssize_t (*check_configfs_dev_params)(struct se_hba *,
+			struct se_subsystem_dev *);
+	ssize_t (*set_configfs_dev_params)(struct se_hba *,
+			struct se_subsystem_dev *, const char *, ssize_t);
+	ssize_t (*show_configfs_dev_params)(struct se_hba *,
+			struct se_subsystem_dev *, char *);
+	u32 (*get_device_rev)(struct se_device *);
+	u32 (*get_device_type)(struct se_device *);
+	sector_t (*get_blocks)(struct se_device *);
+	unsigned char *(*get_sense_buffer)(struct se_task *);
+};
+
+int	transport_subsystem_register(struct se_subsystem_api *);
+void	transport_subsystem_release(struct se_subsystem_api *);
+
+struct se_device *transport_add_device_to_core_hba(struct se_hba *,
+		struct se_subsystem_api *, struct se_subsystem_dev *, u32,
+		void *, struct se_dev_limits *, const char *, const char *);
+
+void	transport_complete_sync_cache(struct se_cmd *, int);
+void	transport_complete_task(struct se_task *, int);
+
+void	target_get_task_cdb(struct se_task *, unsigned char *);
+
+void	transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *);
+int	transport_set_vpd_assoc(struct t10_vpd *, unsigned char *);
+int	transport_set_vpd_ident_type(struct t10_vpd *, unsigned char *);
+int	transport_set_vpd_ident(struct t10_vpd *, unsigned char *);
+
+/* core helpers also used by command snooping in pscsi */
+void	*transport_kmap_first_data_page(struct se_cmd *);
+void	transport_kunmap_first_data_page(struct se_cmd *);
+
+#endif /* TARGET_CORE_BACKEND_H */
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 6873c7d..daf532b 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -10,6 +10,7 @@
 #include <net/tcp.h>
 
 #define TARGET_CORE_MOD_VERSION		"v4.1.0-rc1-ml"
+#define TARGET_CORE_VERSION		TARGET_CORE_MOD_VERSION
 
 /* Maximum Number of LUNs per Target Portal Group */
 /* Don't raise above 511 or REPORT_LUNS needs to handle >1 page */
@@ -34,6 +35,7 @@
 #define TRANSPORT_SENSE_BUFFER			SCSI_SENSE_BUFFERSIZE
 /* Used by transport_send_check_condition_and_sense() */
 #define SPC_SENSE_KEY_OFFSET			2
+#define SPC_ADD_SENSE_LEN_OFFSET		7
 #define SPC_ASC_KEY_OFFSET			12
 #define SPC_ASCQ_KEY_OFFSET			13
 #define TRANSPORT_IQN_LEN			224
@@ -53,6 +55,72 @@
 /* Used by transport_get_inquiry_vpd_device_ident() */
 #define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN	254
 
+/* Attempts before moving from SHORT to LONG */
+#define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD	3
+#define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT	3  /* In milliseconds */
+#define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG	10 /* In milliseconds */
+
+#define PYX_TRANSPORT_STATUS_INTERVAL		5 /* In seconds */
+
+/*
+ * struct se_subsystem_dev->su_dev_flags
+*/
+#define SDF_FIRMWARE_VPD_UNIT_SERIAL		0x00000001
+#define SDF_EMULATED_VPD_UNIT_SERIAL		0x00000002
+#define SDF_USING_UDEV_PATH			0x00000004
+#define SDF_USING_ALIAS				0x00000008
+
+/*
+ * struct se_device->dev_flags
+ */
+#define DF_READ_ONLY				0x00000001
+#define DF_SPC2_RESERVATIONS			0x00000002
+#define DF_SPC2_RESERVATIONS_WITH_ISID		0x00000004
+
+/* struct se_dev_attrib sanity values */
+/* Default max_unmap_lba_count */
+#define DA_MAX_UNMAP_LBA_COUNT			0
+/* Default max_unmap_block_desc_count */
+#define DA_MAX_UNMAP_BLOCK_DESC_COUNT		0
+/* Default unmap_granularity */
+#define DA_UNMAP_GRANULARITY_DEFAULT		0
+/* Default unmap_granularity_alignment */
+#define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT	0
+/* Emulation for Direct Page Out */
+#define DA_EMULATE_DPO				0
+/* Emulation for Forced Unit Access WRITEs */
+#define DA_EMULATE_FUA_WRITE			1
+/* Emulation for Forced Unit Access READs */
+#define DA_EMULATE_FUA_READ			0
+/* Emulation for WriteCache and SYNCHRONIZE_CACHE */
+#define DA_EMULATE_WRITE_CACHE			0
+/* Emulation for UNIT ATTENTION Interlock Control */
+#define DA_EMULATE_UA_INTLLCK_CTRL		0
+/* Emulation for TASK_ABORTED status (TAS) by default */
+#define DA_EMULATE_TAS				1
+/* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */
+#define DA_EMULATE_TPU				0
+/*
+ * Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using
+ * block/blk-lib.c:blkdev_issue_discard()
+ */
+#define DA_EMULATE_TPWS				0
+/* No Emulation for PSCSI by default */
+#define DA_EMULATE_RESERVATIONS			0
+/* No Emulation for PSCSI by default */
+#define DA_EMULATE_ALUA				0
+/* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */
+#define DA_ENFORCE_PR_ISIDS			1
+#define DA_STATUS_MAX_SECTORS_MIN		16
+#define DA_STATUS_MAX_SECTORS_MAX		8192
+/* By default don't report non-rotating (solid state) medium */
+#define DA_IS_NONROT				0
+/* Queue Algorithm Modifier default for restricted reordering in control mode page */
+#define DA_EMULATE_REST_REORD			0
+
+#define SE_MODE_PAGE_BUF			512
+
+
 /* struct se_hba->hba_flags */
 enum hba_flags_table {
 	HBA_FLAGS_INTERNAL_USE	= 0x01,
@@ -71,11 +139,12 @@
 	TRANSPORT_TPG_TYPE_DISCOVERY = 1,
 };
 
-/* Used for generate timer flags */
+/* struct se_task->task_flags */
 enum se_task_flags {
 	TF_ACTIVE		= (1 << 0),
 	TF_SENT			= (1 << 1),
 	TF_REQUEST_STOP		= (1 << 2),
+	TF_HAS_SENSE		= (1 << 3),
 };
 
 /* Special transport agnostic struct se_cmd->t_states */
@@ -158,9 +227,38 @@
 	TCM_RESERVATION_CONFLICT		= 0x10,
 };
 
+enum target_sc_flags_table {
+	TARGET_SCF_BIDI_OP		= 0x01,
+	TARGET_SCF_ACK_KREF		= 0x02,
+};
+
+/* fabric independent task management function values */
+enum tcm_tmreq_table {
+	TMR_ABORT_TASK		= 1,
+	TMR_ABORT_TASK_SET	= 2,
+	TMR_CLEAR_ACA		= 3,
+	TMR_CLEAR_TASK_SET	= 4,
+	TMR_LUN_RESET		= 5,
+	TMR_TARGET_WARM_RESET	= 6,
+	TMR_TARGET_COLD_RESET	= 7,
+	TMR_FABRIC_TMR		= 255,
+};
+
+/* fabric independent task management response values */
+enum tcm_tmrsp_table {
+	TMR_FUNCTION_COMPLETE		= 0,
+	TMR_TASK_DOES_NOT_EXIST		= 1,
+	TMR_LUN_DOES_NOT_EXIST		= 2,
+	TMR_TASK_STILL_ALLEGIANT	= 3,
+	TMR_TASK_FAILOVER_NOT_SUPPORTED	= 4,
+	TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED	= 5,
+	TMR_FUNCTION_AUTHORIZATION_FAILED = 6,
+	TMR_FUNCTION_REJECTED		= 255,
+};
+
 struct se_obj {
 	atomic_t obj_access_count;
-} ____cacheline_aligned;
+};
 
 /*
  * Used by TCM Core internally to signal if ALUA emulation is enabled or
@@ -207,7 +305,7 @@
 	struct config_group alua_tg_pt_gps_group;
 	int (*alua_state_check)(struct se_cmd *, unsigned char *, u8 *);
 	struct list_head tg_pt_gps_list;
-} ____cacheline_aligned;
+};
 
 struct t10_alua_lu_gp {
 	u16	lu_gp_id;
@@ -218,7 +316,7 @@
 	struct config_group lu_gp_group;
 	struct list_head lu_gp_node;
 	struct list_head lu_gp_mem_list;
-} ____cacheline_aligned;
+};
 
 struct t10_alua_lu_gp_member {
 	bool lu_gp_assoc;
@@ -227,7 +325,7 @@
 	struct t10_alua_lu_gp *lu_gp;
 	struct se_device *lu_gp_mem_dev;
 	struct list_head lu_gp_mem_list;
-} ____cacheline_aligned;
+};
 
 struct t10_alua_tg_pt_gp {
 	u16	tg_pt_gp_id;
@@ -250,7 +348,7 @@
 	struct config_group tg_pt_gp_group;
 	struct list_head tg_pt_gp_list;
 	struct list_head tg_pt_gp_mem_list;
-} ____cacheline_aligned;
+};
 
 struct t10_alua_tg_pt_gp_member {
 	bool tg_pt_gp_assoc;
@@ -259,7 +357,7 @@
 	struct t10_alua_tg_pt_gp *tg_pt_gp;
 	struct se_port *tg_pt;
 	struct list_head tg_pt_gp_mem_list;
-} ____cacheline_aligned;
+};
 
 struct t10_vpd {
 	unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
@@ -269,7 +367,7 @@
 	u32 association;
 	u32 device_identifier_type;
 	struct list_head vpd_list;
-} ____cacheline_aligned;
+};
 
 struct t10_wwn {
 	char vendor[8];
@@ -280,7 +378,7 @@
 	struct se_subsystem_dev *t10_sub_dev;
 	struct config_group t10_wwn_group;
 	struct list_head t10_vpd_list;
-} ____cacheline_aligned;
+};
 
 
 /*
@@ -333,7 +431,7 @@
 	struct list_head pr_reg_aptpl_list;
 	struct list_head pr_reg_atp_list;
 	struct list_head pr_reg_atp_mem_list;
-} ____cacheline_aligned;
+};
 
 /*
  * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS,
@@ -374,20 +472,20 @@
 	struct list_head registration_list;
 	struct list_head aptpl_reg_list;
 	struct t10_reservation_ops pr_ops;
-} ____cacheline_aligned;
+};
 
 struct se_queue_req {
 	int			state;
 	struct se_cmd		*cmd;
 	struct list_head	qr_list;
-} ____cacheline_aligned;
+};
 
 struct se_queue_obj {
 	atomic_t		queue_cnt;
 	spinlock_t		cmd_queue_lock;
 	struct list_head	qobj_list;
 	wait_queue_head_t	thread_wq;
-} ____cacheline_aligned;
+};
 
 struct se_task {
 	unsigned long long	task_lba;
@@ -397,16 +495,14 @@
 	struct scatterlist	*task_sg;
 	u32			task_sg_nents;
 	u16			task_flags;
-	u8			task_sense;
 	u8			task_scsi_status;
-	int			task_error_status;
 	enum dma_data_direction	task_data_direction;
-	atomic_t		task_state_active;
 	struct list_head	t_list;
 	struct list_head	t_execute_list;
 	struct list_head	t_state_list;
+	bool			t_state_active;
 	struct completion	task_stop_comp;
-} ____cacheline_aligned;
+};
 
 struct se_cmd {
 	/* SAM response code being sent to initiator */
@@ -451,6 +547,7 @@
 	struct list_head	se_queue_node;
 	struct list_head	se_cmd_list;
 	struct completion	cmd_wait_comp;
+	struct kref		cmd_kref;
 	struct target_core_fabric_ops *se_tfo;
 	int (*execute_task)(struct se_task *);
 	void (*transport_complete_callback)(struct se_cmd *);
@@ -492,7 +589,7 @@
 	struct list_head	t_task_list;
 	u32			t_task_list_num;
 
-} ____cacheline_aligned;
+};
 
 struct se_tmr_req {
 	/* Task Management function to be preformed */
@@ -510,7 +607,7 @@
 	struct se_device	*tmr_dev;
 	struct se_lun		*tmr_lun;
 	struct list_head	tmr_list;
-} ____cacheline_aligned;
+};
 
 struct se_ua {
 	u8			ua_asc;
@@ -518,7 +615,7 @@
 	struct se_node_acl	*ua_nacl;
 	struct list_head	ua_dev_list;
 	struct list_head	ua_nacl_list;
-} ____cacheline_aligned;
+};
 
 struct se_node_acl {
 	char			initiatorname[TRANSPORT_IQN_LEN];
@@ -545,7 +642,7 @@
 	struct config_group	*acl_default_groups[5];
 	struct list_head	acl_list;
 	struct list_head	acl_sess_list;
-} ____cacheline_aligned;
+};
 
 struct se_session {
 	unsigned		sess_tearing_down:1;
@@ -558,7 +655,7 @@
 	struct list_head	sess_cmd_list;
 	struct list_head	sess_wait_list;
 	spinlock_t		sess_cmd_lock;
-} ____cacheline_aligned;
+};
 
 struct se_device;
 struct se_transform_info;
@@ -578,7 +675,7 @@
 	struct list_head	lacl_list;
 	struct config_group	se_lun_group;
 	struct se_ml_stat_grps	ml_stat_grps;
-}  ____cacheline_aligned;
+};
 
 struct se_dev_entry {
 	bool			def_pr_registered;
@@ -603,7 +700,7 @@
 	struct se_lun		*se_lun;
 	struct list_head	alua_port_list;
 	struct list_head	ua_list;
-}  ____cacheline_aligned;
+};
 
 struct se_dev_limits {
 	/* Max supported HW queue depth */
@@ -612,7 +709,7 @@
 	u32		queue_depth;
 	/* From include/linux/blkdev.h for the other HW/SW limits. */
 	struct queue_limits limits;
-} ____cacheline_aligned;
+};
 
 struct se_dev_attrib {
 	int		emulate_dpo;
@@ -641,7 +738,7 @@
 	u32		unmap_granularity_alignment;
 	struct se_subsystem_dev *da_sub_dev;
 	struct config_group da_group;
-} ____cacheline_aligned;
+};
 
 struct se_dev_stat_grps {
 	struct config_group stat_group;
@@ -674,7 +771,7 @@
 	struct config_group se_dev_pr_group;
 	/* For target_core_stat.c groups */
 	struct se_dev_stat_grps dev_stat_grps;
-} ____cacheline_aligned;
+};
 
 struct se_device {
 	/* RELATIVE TARGET PORT IDENTIFER Counter */
@@ -685,7 +782,6 @@
 	u32			dev_port_count;
 	/* See transport_device_status_table */
 	u32			dev_status;
-	u32			dev_tcq_window_closed;
 	/* Physical device queue depth */
 	u32			queue_depth;
 	/* Used for SPC-2 reservations enforce of ISIDs */
@@ -702,7 +798,6 @@
 	spinlock_t		stats_lock;
 	/* Active commands on this virtual SE device */
 	atomic_t		simple_cmds;
-	atomic_t		depth_left;
 	atomic_t		dev_ordered_id;
 	atomic_t		execute_tasks;
 	atomic_t		dev_ordered_sync;
@@ -740,7 +835,7 @@
 	struct se_subsystem_api *transport;
 	/* Linked list for struct se_hba struct se_device list */
 	struct list_head	dev_list;
-}  ____cacheline_aligned;
+};
 
 struct se_hba {
 	u16			hba_tpgt;
@@ -759,7 +854,7 @@
 	struct config_group	hba_group;
 	struct mutex		hba_access_mutex;
 	struct se_subsystem_api *transport;
-}  ____cacheline_aligned;
+};
 
 struct se_port_stat_grps {
 	struct config_group stat_group;
@@ -785,13 +880,13 @@
 	struct se_port		*lun_sep;
 	struct config_group	lun_group;
 	struct se_port_stat_grps port_stat_grps;
-} ____cacheline_aligned;
+};
 
 struct scsi_port_stats {
        u64     cmd_pdus;
        u64     tx_data_octets;
        u64     rx_data_octets;
-} ____cacheline_aligned;
+};
 
 struct se_port {
 	/* RELATIVE TARGET PORT IDENTIFER */
@@ -811,12 +906,12 @@
 	struct se_portal_group *sep_tpg;
 	struct list_head sep_alua_list;
 	struct list_head sep_list;
-} ____cacheline_aligned;
+};
 
 struct se_tpg_np {
 	struct se_portal_group *tpg_np_parent;
 	struct config_group	tpg_np_group;
-} ____cacheline_aligned;
+};
 
 struct se_portal_group {
 	/* Type of target portal group, see transport_tpg_type_table */
@@ -849,13 +944,13 @@
 	struct config_group	tpg_acl_group;
 	struct config_group	tpg_attrib_group;
 	struct config_group	tpg_param_group;
-} ____cacheline_aligned;
+};
 
 struct se_wwn {
 	struct target_fabric_configfs *wwn_tf;
 	struct config_group	wwn_group;
 	struct config_group	*wwn_default_groups[2];
 	struct config_group	fabric_stat_group;
-} ____cacheline_aligned;
+};
 
 #endif /* TARGET_CORE_BASE_H */
diff --git a/include/target/target_core_device.h b/include/target/target_core_device.h
deleted file mode 100644
index 2be31ff..0000000
--- a/include/target/target_core_device.h
+++ /dev/null
@@ -1,63 +0,0 @@
-#ifndef TARGET_CORE_DEVICE_H
-#define TARGET_CORE_DEVICE_H
-
-extern int transport_lookup_cmd_lun(struct se_cmd *, u32);
-extern int transport_lookup_tmr_lun(struct se_cmd *, u32);
-extern struct se_dev_entry *core_get_se_deve_from_rtpi(
-					struct se_node_acl *, u16);
-extern int core_free_device_list_for_node(struct se_node_acl *,
-					struct se_portal_group *);
-extern void core_dec_lacl_count(struct se_node_acl *, struct se_cmd *);
-extern void core_update_device_list_access(u32, u32, struct se_node_acl *);
-extern int core_update_device_list_for_node(struct se_lun *, struct se_lun_acl *, u32,
-					u32, struct se_node_acl *,
-					struct se_portal_group *, int);
-extern void core_clear_lun_from_tpg(struct se_lun *, struct se_portal_group *);
-extern int core_dev_export(struct se_device *, struct se_portal_group *,
-					struct se_lun *);
-extern void core_dev_unexport(struct se_device *, struct se_portal_group *,
-					struct se_lun *);
-extern int target_report_luns(struct se_task *);
-extern void se_release_device_for_hba(struct se_device *);
-extern void se_release_vpd_for_dev(struct se_device *);
-extern void se_clear_dev_ports(struct se_device *);
-extern int se_free_virtual_device(struct se_device *, struct se_hba *);
-extern int se_dev_check_online(struct se_device *);
-extern int se_dev_check_shutdown(struct se_device *);
-extern void se_dev_set_default_attribs(struct se_device *, struct se_dev_limits *);
-extern int se_dev_set_task_timeout(struct se_device *, u32);
-extern int se_dev_set_max_unmap_lba_count(struct se_device *, u32);
-extern int se_dev_set_max_unmap_block_desc_count(struct se_device *, u32);
-extern int se_dev_set_unmap_granularity(struct se_device *, u32);
-extern int se_dev_set_unmap_granularity_alignment(struct se_device *, u32);
-extern int se_dev_set_emulate_dpo(struct se_device *, int);
-extern int se_dev_set_emulate_fua_write(struct se_device *, int);
-extern int se_dev_set_emulate_fua_read(struct se_device *, int);
-extern int se_dev_set_emulate_write_cache(struct se_device *, int);
-extern int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *, int);
-extern int se_dev_set_emulate_tas(struct se_device *, int);
-extern int se_dev_set_emulate_tpu(struct se_device *, int);
-extern int se_dev_set_emulate_tpws(struct se_device *, int);
-extern int se_dev_set_enforce_pr_isids(struct se_device *, int);
-extern int se_dev_set_is_nonrot(struct se_device *, int);
-extern int se_dev_set_emulate_rest_reord(struct se_device *dev, int);
-extern int se_dev_set_queue_depth(struct se_device *, u32);
-extern int se_dev_set_max_sectors(struct se_device *, u32);
-extern int se_dev_set_optimal_sectors(struct se_device *, u32);
-extern int se_dev_set_block_size(struct se_device *, u32);
-extern struct se_lun *core_dev_add_lun(struct se_portal_group *, struct se_hba *,
-					struct se_device *, u32);
-extern int core_dev_del_lun(struct se_portal_group *, u32);
-extern struct se_lun *core_get_lun_from_tpg(struct se_portal_group *, u32);
-extern struct se_lun_acl *core_dev_init_initiator_node_lun_acl(struct se_portal_group *,
-							u32, char *, int *);
-extern int core_dev_add_initiator_node_lun_acl(struct se_portal_group *,
-						struct se_lun_acl *, u32, u32);
-extern int core_dev_del_initiator_node_lun_acl(struct se_portal_group *,
-						struct se_lun *, struct se_lun_acl *);
-extern void core_dev_free_initiator_node_lun_acl(struct se_portal_group *,
-						struct se_lun_acl *lacl);
-extern int core_dev_setup_virtual_lun0(void);
-extern void core_dev_release_virtual_lun0(void);
-
-#endif /* TARGET_CORE_DEVICE_H */
diff --git a/include/target/target_core_fabric.h b/include/target/target_core_fabric.h
new file mode 100644
index 0000000..523e8bc
--- /dev/null
+++ b/include/target/target_core_fabric.h
@@ -0,0 +1,187 @@
+#ifndef TARGET_CORE_FABRIC_H
+#define TARGET_CORE_FABRIC_H
+
+struct target_core_fabric_ops {
+	struct configfs_subsystem *tf_subsys;
+	/*
+	 * Optional to signal struct se_task->task_sg[] padding entries
+	 * for scatterlist chaining using transport_do_task_sg_link(),
+	 * disabled by default
+	 */
+	bool task_sg_chaining;
+	char *(*get_fabric_name)(void);
+	u8 (*get_fabric_proto_ident)(struct se_portal_group *);
+	char *(*tpg_get_wwn)(struct se_portal_group *);
+	u16 (*tpg_get_tag)(struct se_portal_group *);
+	u32 (*tpg_get_default_depth)(struct se_portal_group *);
+	u32 (*tpg_get_pr_transport_id)(struct se_portal_group *,
+				struct se_node_acl *,
+				struct t10_pr_registration *, int *,
+				unsigned char *);
+	u32 (*tpg_get_pr_transport_id_len)(struct se_portal_group *,
+				struct se_node_acl *,
+				struct t10_pr_registration *, int *);
+	char *(*tpg_parse_pr_out_transport_id)(struct se_portal_group *,
+				const char *, u32 *, char **);
+	int (*tpg_check_demo_mode)(struct se_portal_group *);
+	int (*tpg_check_demo_mode_cache)(struct se_portal_group *);
+	int (*tpg_check_demo_mode_write_protect)(struct se_portal_group *);
+	int (*tpg_check_prod_mode_write_protect)(struct se_portal_group *);
+	/*
+	 * Optionally used by fabrics to allow demo-mode login, but not
+	 * expose any TPG LUNs, and return 'not connected' in standard
+	 * inquiry response
+	 */
+	int (*tpg_check_demo_mode_login_only)(struct se_portal_group *);
+	struct se_node_acl *(*tpg_alloc_fabric_acl)(
+					struct se_portal_group *);
+	void (*tpg_release_fabric_acl)(struct se_portal_group *,
+					struct se_node_acl *);
+	u32 (*tpg_get_inst_index)(struct se_portal_group *);
+	/*
+	 * Optional function pointer for TCM to perform command map
+	 * from TCM processing thread context, for those struct se_cmd
+	 * initially allocated in interrupt context.
+	 */
+	int (*new_cmd_map)(struct se_cmd *);
+	/*
+	 * Optional to release struct se_cmd and fabric dependent allocated
+	 * I/O descriptor in transport_cmd_check_stop().
+	 *
+	 * Returning 1 will signal a descriptor has been released.
+	 * Returning 0 will signal a descriptor has not been released.
+	 */
+	int (*check_stop_free)(struct se_cmd *);
+	void (*release_cmd)(struct se_cmd *);
+	/*
+	 * Called with spin_lock_bh(struct se_portal_group->session_lock held.
+	 */
+	int (*shutdown_session)(struct se_session *);
+	void (*close_session)(struct se_session *);
+	void (*stop_session)(struct se_session *, int, int);
+	void (*fall_back_to_erl0)(struct se_session *);
+	int (*sess_logged_in)(struct se_session *);
+	u32 (*sess_get_index)(struct se_session *);
+	/*
+	 * Used only for SCSI fabrics that contain multi-value TransportIDs
+	 * (like iSCSI).  All other SCSI fabrics should set this to NULL.
+	 */
+	u32 (*sess_get_initiator_sid)(struct se_session *,
+				      unsigned char *, u32);
+	int (*write_pending)(struct se_cmd *);
+	int (*write_pending_status)(struct se_cmd *);
+	void (*set_default_node_attributes)(struct se_node_acl *);
+	u32 (*get_task_tag)(struct se_cmd *);
+	int (*get_cmd_state)(struct se_cmd *);
+	int (*queue_data_in)(struct se_cmd *);
+	int (*queue_status)(struct se_cmd *);
+	int (*queue_tm_rsp)(struct se_cmd *);
+	u16 (*set_fabric_sense_len)(struct se_cmd *, u32);
+	u16 (*get_fabric_sense_len)(void);
+	int (*is_state_remove)(struct se_cmd *);
+	/*
+	 * fabric module calls for target_core_fabric_configfs.c
+	 */
+	struct se_wwn *(*fabric_make_wwn)(struct target_fabric_configfs *,
+				struct config_group *, const char *);
+	void (*fabric_drop_wwn)(struct se_wwn *);
+	struct se_portal_group *(*fabric_make_tpg)(struct se_wwn *,
+				struct config_group *, const char *);
+	void (*fabric_drop_tpg)(struct se_portal_group *);
+	int (*fabric_post_link)(struct se_portal_group *,
+				struct se_lun *);
+	void (*fabric_pre_unlink)(struct se_portal_group *,
+				struct se_lun *);
+	struct se_tpg_np *(*fabric_make_np)(struct se_portal_group *,
+				struct config_group *, const char *);
+	void (*fabric_drop_np)(struct se_tpg_np *);
+	struct se_node_acl *(*fabric_make_nodeacl)(struct se_portal_group *,
+				struct config_group *, const char *);
+	void (*fabric_drop_nodeacl)(struct se_node_acl *);
+};
+
+struct se_session *transport_init_session(void);
+void	__transport_register_session(struct se_portal_group *,
+		struct se_node_acl *, struct se_session *, void *);
+void	transport_register_session(struct se_portal_group *,
+		struct se_node_acl *, struct se_session *, void *);
+void	transport_free_session(struct se_session *);
+void	transport_deregister_session_configfs(struct se_session *);
+void	transport_deregister_session(struct se_session *);
+
+
+void	transport_init_se_cmd(struct se_cmd *, struct target_core_fabric_ops *,
+		struct se_session *, u32, int, int, unsigned char *);
+int	transport_lookup_cmd_lun(struct se_cmd *, u32);
+int	transport_generic_allocate_tasks(struct se_cmd *, unsigned char *);
+int	target_submit_cmd(struct se_cmd *, struct se_session *, unsigned char *,
+		unsigned char *, u32, u32, int, int, int);
+int	transport_handle_cdb_direct(struct se_cmd *);
+int	transport_generic_handle_cdb_map(struct se_cmd *);
+int	transport_generic_handle_data(struct se_cmd *);
+int	transport_generic_map_mem_to_cmd(struct se_cmd *cmd,
+		struct scatterlist *, u32, struct scatterlist *, u32);
+void	transport_do_task_sg_chain(struct se_cmd *);
+int	transport_generic_new_cmd(struct se_cmd *);
+
+void	transport_generic_process_write(struct se_cmd *);
+
+void	transport_generic_free_cmd(struct se_cmd *, int);
+
+bool	transport_wait_for_tasks(struct se_cmd *);
+int	transport_check_aborted_status(struct se_cmd *, int);
+int	transport_send_check_condition_and_sense(struct se_cmd *, u8, int);
+
+void	target_get_sess_cmd(struct se_session *, struct se_cmd *, bool);
+int	target_put_sess_cmd(struct se_session *, struct se_cmd *);
+void	target_splice_sess_cmd_list(struct se_session *);
+void	target_wait_for_sess_cmds(struct se_session *, int);
+
+int	core_alua_check_nonop_delay(struct se_cmd *);
+
+struct se_tmr_req *core_tmr_alloc_req(struct se_cmd *, void *, u8, gfp_t);
+void	core_tmr_release_req(struct se_tmr_req *);
+int	transport_generic_handle_tmr(struct se_cmd *);
+int	transport_lookup_tmr_lun(struct se_cmd *, u32);
+
+struct se_node_acl *core_tpg_check_initiator_node_acl(struct se_portal_group *,
+		unsigned char *);
+void	core_tpg_clear_object_luns(struct se_portal_group *);
+struct se_node_acl *core_tpg_add_initiator_node_acl(struct se_portal_group *,
+		struct se_node_acl *, const char *, u32);
+int	core_tpg_del_initiator_node_acl(struct se_portal_group *,
+		struct se_node_acl *, int);
+int	core_tpg_set_initiator_node_queue_depth(struct se_portal_group *,
+		unsigned char *, u32, int);
+int	core_tpg_register(struct target_core_fabric_ops *, struct se_wwn *,
+		struct se_portal_group *, void *, int);
+int	core_tpg_deregister(struct se_portal_group *);
+
+/* SAS helpers */
+u8	sas_get_fabric_proto_ident(struct se_portal_group *);
+u32	sas_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *,
+		struct t10_pr_registration *, int *, unsigned char *);
+u32	sas_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *,
+		struct t10_pr_registration *, int *);
+char	*sas_parse_pr_out_transport_id(struct se_portal_group *, const char *,
+		u32 *, char **);
+
+/* FC helpers */
+u8	fc_get_fabric_proto_ident(struct se_portal_group *);
+u32	fc_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *,
+		struct t10_pr_registration *, int *, unsigned char *);
+u32	fc_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *,
+		struct t10_pr_registration *, int *);
+char	*fc_parse_pr_out_transport_id(struct se_portal_group *, const char *,
+		u32 *, char **);
+
+/* iSCSI helpers */
+u8	iscsi_get_fabric_proto_ident(struct se_portal_group *);
+u32	iscsi_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *,
+		struct t10_pr_registration *, int *, unsigned char *);
+u32	iscsi_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *,
+		struct t10_pr_registration *, int *);
+char	*iscsi_parse_pr_out_transport_id(struct se_portal_group *, const char *,
+		u32 *, char **);
+
+#endif /* TARGET_CORE_FABRICH */
diff --git a/include/target/target_core_fabric_lib.h b/include/target/target_core_fabric_lib.h
deleted file mode 100644
index c2f8d0e..0000000
--- a/include/target/target_core_fabric_lib.h
+++ /dev/null
@@ -1,28 +0,0 @@
-#ifndef TARGET_CORE_FABRIC_LIB_H
-#define TARGET_CORE_FABRIC_LIB_H
-
-extern u8 sas_get_fabric_proto_ident(struct se_portal_group *);
-extern u32 sas_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *,
-			struct t10_pr_registration *, int *, unsigned char *);
-extern u32 sas_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *,
-			struct t10_pr_registration *, int *);
-extern char *sas_parse_pr_out_transport_id(struct se_portal_group *,
-			const char *, u32 *, char **);
-
-extern u8 fc_get_fabric_proto_ident(struct se_portal_group *);
-extern u32 fc_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *,
-			struct t10_pr_registration *, int *, unsigned char *);
-extern u32 fc_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *,
-			struct t10_pr_registration *, int *);
-extern char *fc_parse_pr_out_transport_id(struct se_portal_group *,
-			const char *, u32 *, char **);
-
-extern u8 iscsi_get_fabric_proto_ident(struct se_portal_group *);
-extern u32 iscsi_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *,
-			struct t10_pr_registration *, int *, unsigned char *);
-extern u32 iscsi_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *,
-			struct t10_pr_registration *, int *);
-extern char *iscsi_parse_pr_out_transport_id(struct se_portal_group *,
-			const char *, u32 *, char **);
-
-#endif /* TARGET_CORE_FABRIC_LIB_H */
diff --git a/include/target/target_core_fabric_ops.h b/include/target/target_core_fabric_ops.h
deleted file mode 100644
index 0256825..0000000
--- a/include/target/target_core_fabric_ops.h
+++ /dev/null
@@ -1,105 +0,0 @@
-/* Defined in target_core_configfs.h */
-struct target_fabric_configfs;
-
-struct target_core_fabric_ops {
-	struct configfs_subsystem *tf_subsys;
-	/*
-	 * Optional to signal struct se_task->task_sg[] padding entries
-	 * for scatterlist chaining using transport_do_task_sg_link(),
-	 * disabled by default
-	 */
-	bool task_sg_chaining;
-	char *(*get_fabric_name)(void);
-	u8 (*get_fabric_proto_ident)(struct se_portal_group *);
-	char *(*tpg_get_wwn)(struct se_portal_group *);
-	u16 (*tpg_get_tag)(struct se_portal_group *);
-	u32 (*tpg_get_default_depth)(struct se_portal_group *);
-	u32 (*tpg_get_pr_transport_id)(struct se_portal_group *,
-				struct se_node_acl *,
-				struct t10_pr_registration *, int *,
-				unsigned char *);
-	u32 (*tpg_get_pr_transport_id_len)(struct se_portal_group *,
-				struct se_node_acl *,
-				struct t10_pr_registration *, int *);
-	char *(*tpg_parse_pr_out_transport_id)(struct se_portal_group *,
-				const char *, u32 *, char **);
-	int (*tpg_check_demo_mode)(struct se_portal_group *);
-	int (*tpg_check_demo_mode_cache)(struct se_portal_group *);
-	int (*tpg_check_demo_mode_write_protect)(struct se_portal_group *);
-	int (*tpg_check_prod_mode_write_protect)(struct se_portal_group *);
-	/*
-	 * Optionally used by fabrics to allow demo-mode login, but not
-	 * expose any TPG LUNs, and return 'not connected' in standard
-	 * inquiry response
-	 */
-	int (*tpg_check_demo_mode_login_only)(struct se_portal_group *);
-	struct se_node_acl *(*tpg_alloc_fabric_acl)(
-					struct se_portal_group *);
-	void (*tpg_release_fabric_acl)(struct se_portal_group *,
-					struct se_node_acl *);
-	u32 (*tpg_get_inst_index)(struct se_portal_group *);
-	/*
-	 * Optional function pointer for TCM to perform command map
-	 * from TCM processing thread context, for those struct se_cmd
-	 * initially allocated in interrupt context.
-	 */
-	int (*new_cmd_map)(struct se_cmd *);
-	/*
-	 * Optional to release struct se_cmd and fabric dependent allocated
-	 * I/O descriptor in transport_cmd_check_stop().
-	 *
-	 * Returning 1 will signal a descriptor has been released.
-	 * Returning 0 will signal a descriptor has not been released.
-	 */
-	int (*check_stop_free)(struct se_cmd *);
-	/*
-	 * Optional check for active I/O shutdown
-	 */
-	int (*check_release_cmd)(struct se_cmd *);
-	void (*release_cmd)(struct se_cmd *);
-	/*
-	 * Called with spin_lock_bh(struct se_portal_group->session_lock held.
-	 */
-	int (*shutdown_session)(struct se_session *);
-	void (*close_session)(struct se_session *);
-	void (*stop_session)(struct se_session *, int, int);
-	void (*fall_back_to_erl0)(struct se_session *);
-	int (*sess_logged_in)(struct se_session *);
-	u32 (*sess_get_index)(struct se_session *);
-	/*
-	 * Used only for SCSI fabrics that contain multi-value TransportIDs
-	 * (like iSCSI).  All other SCSI fabrics should set this to NULL.
-	 */
-	u32 (*sess_get_initiator_sid)(struct se_session *,
-				      unsigned char *, u32);
-	int (*write_pending)(struct se_cmd *);
-	int (*write_pending_status)(struct se_cmd *);
-	void (*set_default_node_attributes)(struct se_node_acl *);
-	u32 (*get_task_tag)(struct se_cmd *);
-	int (*get_cmd_state)(struct se_cmd *);
-	int (*queue_data_in)(struct se_cmd *);
-	int (*queue_status)(struct se_cmd *);
-	int (*queue_tm_rsp)(struct se_cmd *);
-	u16 (*set_fabric_sense_len)(struct se_cmd *, u32);
-	u16 (*get_fabric_sense_len)(void);
-	int (*is_state_remove)(struct se_cmd *);
-	/*
-	 * fabric module calls for target_core_fabric_configfs.c
-	 */
-	struct se_wwn *(*fabric_make_wwn)(struct target_fabric_configfs *,
-				struct config_group *, const char *);
-	void (*fabric_drop_wwn)(struct se_wwn *);
-	struct se_portal_group *(*fabric_make_tpg)(struct se_wwn *,
-				struct config_group *, const char *);
-	void (*fabric_drop_tpg)(struct se_portal_group *);
-	int (*fabric_post_link)(struct se_portal_group *,
-				struct se_lun *);
-	void (*fabric_pre_unlink)(struct se_portal_group *,
-				struct se_lun *);
-	struct se_tpg_np *(*fabric_make_np)(struct se_portal_group *,
-				struct config_group *, const char *);
-	void (*fabric_drop_np)(struct se_tpg_np *);
-	struct se_node_acl *(*fabric_make_nodeacl)(struct se_portal_group *,
-				struct config_group *, const char *);
-	void (*fabric_drop_nodeacl)(struct se_node_acl *);
-};
diff --git a/include/target/target_core_tmr.h b/include/target/target_core_tmr.h
deleted file mode 100644
index d5876e1..0000000
--- a/include/target/target_core_tmr.h
+++ /dev/null
@@ -1,35 +0,0 @@
-#ifndef TARGET_CORE_TMR_H
-#define TARGET_CORE_TMR_H
-
-/* fabric independent task management function values */
-enum tcm_tmreq_table {
-	TMR_ABORT_TASK		= 1,
-	TMR_ABORT_TASK_SET	= 2,
-	TMR_CLEAR_ACA		= 3,
-	TMR_CLEAR_TASK_SET	= 4,
-	TMR_LUN_RESET		= 5,
-	TMR_TARGET_WARM_RESET	= 6,
-	TMR_TARGET_COLD_RESET	= 7,
-	TMR_FABRIC_TMR		= 255,
-};
-
-/* fabric independent task management response values */
-enum tcm_tmrsp_table {
-	TMR_FUNCTION_COMPLETE		= 0,
-	TMR_TASK_DOES_NOT_EXIST		= 1,
-	TMR_LUN_DOES_NOT_EXIST		= 2,
-	TMR_TASK_STILL_ALLEGIANT	= 3,
-	TMR_TASK_FAILOVER_NOT_SUPPORTED	= 4,
-	TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED	= 5,
-	TMR_FUNCTION_AUTHORIZATION_FAILED = 6,
-	TMR_FUNCTION_REJECTED		= 255,
-};
-
-extern struct kmem_cache *se_tmr_req_cache;
-
-extern struct se_tmr_req *core_tmr_alloc_req(struct se_cmd *, void *, u8, gfp_t);
-extern void core_tmr_release_req(struct se_tmr_req *);
-extern int core_tmr_lun_reset(struct se_device *, struct se_tmr_req *,
-				struct list_head *, struct se_cmd *);
-
-#endif /* TARGET_CORE_TMR_H */
diff --git a/include/target/target_core_tpg.h b/include/target/target_core_tpg.h
deleted file mode 100644
index 77e1872..0000000
--- a/include/target/target_core_tpg.h
+++ /dev/null
@@ -1,35 +0,0 @@
-#ifndef TARGET_CORE_TPG_H
-#define TARGET_CORE_TPG_H
-
-extern struct se_node_acl *__core_tpg_get_initiator_node_acl(struct se_portal_group *tpg,
-						const char *);
-extern struct se_node_acl *core_tpg_get_initiator_node_acl(struct se_portal_group *tpg,
-						unsigned char *);
-extern void core_tpg_add_node_to_devs(struct se_node_acl *,
-						struct se_portal_group *);
-extern struct se_node_acl *core_tpg_check_initiator_node_acl(
-						struct se_portal_group *,
-						unsigned char *);
-extern void core_tpg_wait_for_nacl_pr_ref(struct se_node_acl *);
-extern void core_tpg_wait_for_mib_ref(struct se_node_acl *);
-extern void core_tpg_clear_object_luns(struct se_portal_group *);
-extern struct se_node_acl *core_tpg_add_initiator_node_acl(
-					struct se_portal_group *,
-					struct se_node_acl *,
-					const char *, u32);
-extern int core_tpg_del_initiator_node_acl(struct se_portal_group *,
-						struct se_node_acl *, int);
-extern int core_tpg_set_initiator_node_queue_depth(struct se_portal_group *,
-						unsigned char *, u32, int);
-extern int core_tpg_register(struct target_core_fabric_ops *,
-					struct se_wwn *,
-					struct se_portal_group *, void *,
-					int);
-extern int core_tpg_deregister(struct se_portal_group *);
-extern struct se_lun *core_tpg_pre_addlun(struct se_portal_group *, u32);
-extern int core_tpg_post_addlun(struct se_portal_group *, struct se_lun *, u32,
-				void *);
-extern struct se_lun *core_tpg_pre_dellun(struct se_portal_group *, u32, int *);
-extern int core_tpg_post_dellun(struct se_portal_group *, struct se_lun *);
-
-#endif /* TARGET_CORE_TPG_H */
diff --git a/include/target/target_core_transport.h b/include/target/target_core_transport.h
deleted file mode 100644
index dac4f2d..0000000
--- a/include/target/target_core_transport.h
+++ /dev/null
@@ -1,287 +0,0 @@
-#ifndef TARGET_CORE_TRANSPORT_H
-#define TARGET_CORE_TRANSPORT_H
-
-#define TARGET_CORE_VERSION			TARGET_CORE_MOD_VERSION
-
-/* Attempts before moving from SHORT to LONG */
-#define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD	3
-#define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT	3  /* In milliseconds */
-#define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG	10 /* In milliseconds */
-
-#define PYX_TRANSPORT_STATUS_INTERVAL		5 /* In seconds */
-
-#define TRANSPORT_PLUGIN_PHBA_PDEV		1
-#define TRANSPORT_PLUGIN_VHBA_PDEV		2
-#define TRANSPORT_PLUGIN_VHBA_VDEV		3
-
-/*
- * struct se_subsystem_dev->su_dev_flags
-*/
-#define SDF_FIRMWARE_VPD_UNIT_SERIAL		0x00000001
-#define SDF_EMULATED_VPD_UNIT_SERIAL		0x00000002
-#define SDF_USING_UDEV_PATH			0x00000004
-#define SDF_USING_ALIAS				0x00000008
-
-/*
- * struct se_device->dev_flags
- */
-#define DF_READ_ONLY				0x00000001
-#define DF_SPC2_RESERVATIONS			0x00000002
-#define DF_SPC2_RESERVATIONS_WITH_ISID		0x00000004
-
-/* struct se_dev_attrib sanity values */
-/* Default max_unmap_lba_count */
-#define DA_MAX_UNMAP_LBA_COUNT			0
-/* Default max_unmap_block_desc_count */
-#define DA_MAX_UNMAP_BLOCK_DESC_COUNT		0
-/* Default unmap_granularity */
-#define DA_UNMAP_GRANULARITY_DEFAULT		0
-/* Default unmap_granularity_alignment */
-#define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT	0
-/* Emulation for Direct Page Out */
-#define DA_EMULATE_DPO				0
-/* Emulation for Forced Unit Access WRITEs */
-#define DA_EMULATE_FUA_WRITE			1
-/* Emulation for Forced Unit Access READs */
-#define DA_EMULATE_FUA_READ			0
-/* Emulation for WriteCache and SYNCHRONIZE_CACHE */
-#define DA_EMULATE_WRITE_CACHE			0
-/* Emulation for UNIT ATTENTION Interlock Control */
-#define DA_EMULATE_UA_INTLLCK_CTRL		0
-/* Emulation for TASK_ABORTED status (TAS) by default */
-#define DA_EMULATE_TAS				1
-/* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */
-#define DA_EMULATE_TPU				0
-/*
- * Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using
- * block/blk-lib.c:blkdev_issue_discard()
- */
-#define DA_EMULATE_TPWS				0
-/* No Emulation for PSCSI by default */
-#define DA_EMULATE_RESERVATIONS			0
-/* No Emulation for PSCSI by default */
-#define DA_EMULATE_ALUA				0
-/* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */
-#define DA_ENFORCE_PR_ISIDS			1
-#define DA_STATUS_MAX_SECTORS_MIN		16
-#define DA_STATUS_MAX_SECTORS_MAX		8192
-/* By default don't report non-rotating (solid state) medium */
-#define DA_IS_NONROT				0
-/* Queue Algorithm Modifier default for restricted reordering in control mode page */
-#define DA_EMULATE_REST_REORD			0
-
-#define SE_MODE_PAGE_BUF			512
-
-#define MOD_MAX_SECTORS(ms, bs)			(ms % (PAGE_SIZE / bs))
-
-struct se_subsystem_api;
-
-extern int init_se_kmem_caches(void);
-extern void release_se_kmem_caches(void);
-extern u32 scsi_get_new_index(scsi_index_t);
-extern void transport_init_queue_obj(struct se_queue_obj *);
-extern void transport_subsystem_check_init(void);
-extern int transport_subsystem_register(struct se_subsystem_api *);
-extern void transport_subsystem_release(struct se_subsystem_api *);
-extern void transport_load_plugins(void);
-extern struct se_session *transport_init_session(void);
-extern void __transport_register_session(struct se_portal_group *,
-					struct se_node_acl *,
-					struct se_session *, void *);
-extern void transport_register_session(struct se_portal_group *,
-					struct se_node_acl *,
-					struct se_session *, void *);
-extern void transport_free_session(struct se_session *);
-extern void transport_deregister_session_configfs(struct se_session *);
-extern void transport_deregister_session(struct se_session *);
-extern void transport_cmd_finish_abort(struct se_cmd *, int);
-extern void transport_complete_sync_cache(struct se_cmd *, int);
-extern void transport_complete_task(struct se_task *, int);
-extern void transport_add_task_to_execute_queue(struct se_task *,
-						struct se_task *,
-						struct se_device *);
-extern void transport_remove_task_from_execute_queue(struct se_task *,
-						struct se_device *);
-extern void __transport_remove_task_from_execute_queue(struct se_task *,
-						struct se_device *);
-unsigned char *transport_dump_cmd_direction(struct se_cmd *);
-extern void transport_dump_dev_state(struct se_device *, char *, int *);
-extern void transport_dump_dev_info(struct se_device *, struct se_lun *,
-					unsigned long long, char *, int *);
-extern void transport_dump_vpd_proto_id(struct t10_vpd *,
-					unsigned char *, int);
-extern void transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *);
-extern int transport_dump_vpd_assoc(struct t10_vpd *,
-					unsigned char *, int);
-extern int transport_set_vpd_assoc(struct t10_vpd *, unsigned char *);
-extern int transport_dump_vpd_ident_type(struct t10_vpd *,
-					unsigned char *, int);
-extern int transport_set_vpd_ident_type(struct t10_vpd *, unsigned char *);
-extern int transport_dump_vpd_ident(struct t10_vpd *,
-					unsigned char *, int);
-extern int transport_set_vpd_ident(struct t10_vpd *, unsigned char *);
-extern struct se_device *transport_add_device_to_core_hba(struct se_hba *,
-					struct se_subsystem_api *,
-					struct se_subsystem_dev *, u32,
-					void *, struct se_dev_limits *,
-					const char *, const char *);
-extern void transport_init_se_cmd(struct se_cmd *,
-					struct target_core_fabric_ops *,
-					struct se_session *, u32, int, int,
-					unsigned char *);
-void *transport_kmap_first_data_page(struct se_cmd *cmd);
-void transport_kunmap_first_data_page(struct se_cmd *cmd);
-extern int transport_generic_allocate_tasks(struct se_cmd *, unsigned char *);
-extern int transport_handle_cdb_direct(struct se_cmd *);
-extern int transport_generic_handle_cdb_map(struct se_cmd *);
-extern int transport_generic_handle_data(struct se_cmd *);
-extern int transport_generic_handle_tmr(struct se_cmd *);
-extern bool target_stop_task(struct se_task *task, unsigned long *flags);
-extern int transport_generic_map_mem_to_cmd(struct se_cmd *cmd, struct scatterlist *, u32,
-				struct scatterlist *, u32);
-extern int transport_clear_lun_from_sessions(struct se_lun *);
-extern bool transport_wait_for_tasks(struct se_cmd *);
-extern int transport_check_aborted_status(struct se_cmd *, int);
-extern int transport_send_check_condition_and_sense(struct se_cmd *, u8, int);
-extern void transport_send_task_abort(struct se_cmd *);
-extern void transport_release_cmd(struct se_cmd *);
-extern void transport_generic_free_cmd(struct se_cmd *, int);
-extern void target_get_sess_cmd(struct se_session *, struct se_cmd *);
-extern int target_put_sess_cmd(struct se_session *, struct se_cmd *);
-extern void target_splice_sess_cmd_list(struct se_session *);
-extern void target_wait_for_sess_cmds(struct se_session *, int);
-extern void transport_generic_wait_for_cmds(struct se_cmd *, int);
-extern void transport_do_task_sg_chain(struct se_cmd *);
-extern void transport_generic_process_write(struct se_cmd *);
-extern int transport_generic_new_cmd(struct se_cmd *);
-extern int transport_generic_do_tmr(struct se_cmd *);
-/* From target_core_alua.c */
-extern int core_alua_check_nonop_delay(struct se_cmd *);
-/* From target_core_cdb.c */
-extern int transport_emulate_control_cdb(struct se_task *);
-extern void target_get_task_cdb(struct se_task *task, unsigned char *cdb);
-
-/*
- * Each se_transport_task_t can have N number of possible struct se_task's
- * for the storage transport(s) to possibly execute.
- * Used primarily for splitting up CDBs that exceed the physical storage
- * HBA's maximum sector count per task.
- */
-struct se_mem {
-	struct page	*se_page;
-	u32		se_len;
-	u32		se_off;
-	struct list_head se_list;
-} ____cacheline_aligned;
-
-/*
- * 	Each type of disk transport supported MUST have a template defined
- *	within its .h file.
- */
-struct se_subsystem_api {
-	/*
-	 * The Name. :-)
-	 */
-	char name[16];
-	/*
-	 * Transport Type.
-	 */
-	u8 transport_type;
-
-	unsigned int fua_write_emulated : 1;
-	unsigned int write_cache_emulated : 1;
-
-	/*
-	 * struct module for struct se_hba references
-	 */
-	struct module *owner;
-	/*
-	 * Used for global se_subsystem_api list_head
-	 */
-	struct list_head sub_api_list;
-	/*
-	 * attach_hba():
-	 */
-	int (*attach_hba)(struct se_hba *, u32);
-	/*
-	 * detach_hba():
-	 */
-	void (*detach_hba)(struct se_hba *);
-	/*
-	 * pmode_hba(): Used for TCM/pSCSI subsystem plugin HBA ->
-	 *		Linux/SCSI struct Scsi_Host passthrough
-	*/
-	int (*pmode_enable_hba)(struct se_hba *, unsigned long);
-	/*
-	 * allocate_virtdevice():
-	 */
-	void *(*allocate_virtdevice)(struct se_hba *, const char *);
-	/*
-	 * create_virtdevice(): Only for Virtual HBAs
-	 */
-	struct se_device *(*create_virtdevice)(struct se_hba *,
-				struct se_subsystem_dev *, void *);
-	/*
-	 * free_device():
-	 */
-	void (*free_device)(void *);
-
-	/*
-	 * transport_complete():
-	 *
-	 * Use transport_generic_complete() for majority of DAS transport
-	 * drivers.  Provided out of convenience.
-	 */
-	int (*transport_complete)(struct se_task *task);
-	struct se_task *(*alloc_task)(unsigned char *cdb);
-	/*
-	 * do_task():
-	 */
-	int (*do_task)(struct se_task *);
-	/*
-	 * Used by virtual subsystem plugins IBLOCK and FILEIO to emulate
-	 * UNMAP and WRITE_SAME_* w/ UNMAP=1 <-> Linux/Block Discard
-	 */
-	int (*do_discard)(struct se_device *, sector_t, u32);
-	/*
-	 * Used  by virtual subsystem plugins IBLOCK and FILEIO to emulate
-	 * SYNCHRONIZE_CACHE_* <-> Linux/Block blkdev_issue_flush()
-	 */
-	void (*do_sync_cache)(struct se_task *);
-	/*
-	 * free_task():
-	 */
-	void (*free_task)(struct se_task *);
-	/*
-	 * check_configfs_dev_params():
-	 */
-	ssize_t (*check_configfs_dev_params)(struct se_hba *, struct se_subsystem_dev *);
-	/*
-	 * set_configfs_dev_params():
-	 */
-	ssize_t (*set_configfs_dev_params)(struct se_hba *, struct se_subsystem_dev *,
-						const char *, ssize_t);
-	/*
-	 * show_configfs_dev_params():
-	 */
-	ssize_t (*show_configfs_dev_params)(struct se_hba *, struct se_subsystem_dev *,
-						char *);
-	/*
-	 * get_device_rev():
-	 */
-	u32 (*get_device_rev)(struct se_device *);
-	/*
-	 * get_device_type():
-	 */
-	u32 (*get_device_type)(struct se_device *);
-	/*
-	 * Get the sector_t from a subsystem backstore..
-	 */
-	sector_t (*get_blocks)(struct se_device *);
-	/*
-	 * get_sense_buffer():
-	 */
-	unsigned char *(*get_sense_buffer)(struct se_task *);
-} ____cacheline_aligned;
-
-#endif /* TARGET_CORE_TRANSPORT_H */
diff --git a/include/trace/events/btrfs.h b/include/trace/events/btrfs.h
index b31702a..84f3001 100644
--- a/include/trace/events/btrfs.h
+++ b/include/trace/events/btrfs.h
@@ -16,6 +16,8 @@
 struct btrfs_delayed_tree_ref;
 struct btrfs_delayed_data_ref;
 struct btrfs_delayed_ref_head;
+struct btrfs_block_group_cache;
+struct btrfs_free_cluster;
 struct map_lookup;
 struct extent_buffer;
 
@@ -44,6 +46,17 @@
 	obj, ((obj >= BTRFS_DATA_RELOC_TREE_OBJECTID) ||		\
 	      (obj <= BTRFS_CSUM_TREE_OBJECTID )) ? __show_root_type(obj) : "-"
 
+#define BTRFS_GROUP_FLAGS	\
+	{ BTRFS_BLOCK_GROUP_DATA,	"DATA"}, \
+	{ BTRFS_BLOCK_GROUP_SYSTEM,	"SYSTEM"}, \
+	{ BTRFS_BLOCK_GROUP_METADATA,	"METADATA"}, \
+	{ BTRFS_BLOCK_GROUP_RAID0,	"RAID0"}, \
+	{ BTRFS_BLOCK_GROUP_RAID1,	"RAID1"}, \
+	{ BTRFS_BLOCK_GROUP_DUP,	"DUP"}, \
+	{ BTRFS_BLOCK_GROUP_RAID10,	"RAID10"}
+
+#define BTRFS_UUID_SIZE 16
+
 TRACE_EVENT(btrfs_transaction_commit,
 
 	TP_PROTO(struct btrfs_root *root),
@@ -621,6 +634,34 @@
 		  __entry->cow_level)
 );
 
+TRACE_EVENT(btrfs_space_reservation,
+
+	TP_PROTO(struct btrfs_fs_info *fs_info, char *type, u64 val,
+		 u64 bytes, int reserve),
+
+	TP_ARGS(fs_info, type, val, bytes, reserve),
+
+	TP_STRUCT__entry(
+		__array(	u8,	fsid,	BTRFS_UUID_SIZE	)
+		__string(	type,	type			)
+		__field(	u64,	val			)
+		__field(	u64,	bytes			)
+		__field(	int,	reserve			)
+	),
+
+	TP_fast_assign(
+		memcpy(__entry->fsid, fs_info->fsid, BTRFS_UUID_SIZE);
+		__assign_str(type, type);
+		__entry->val		= val;
+		__entry->bytes		= bytes;
+		__entry->reserve	= reserve;
+	),
+
+	TP_printk("%pU: %s: %Lu %s %Lu", __entry->fsid, __get_str(type),
+		  __entry->val, __entry->reserve ? "reserve" : "release",
+		  __entry->bytes)
+);
+
 DECLARE_EVENT_CLASS(btrfs__reserved_extent,
 
 	TP_PROTO(struct btrfs_root *root, u64 start, u64 len),
@@ -659,6 +700,168 @@
 	TP_ARGS(root, start, len)
 );
 
+TRACE_EVENT(find_free_extent,
+
+	TP_PROTO(struct btrfs_root *root, u64 num_bytes, u64 empty_size,
+		 u64 data),
+
+	TP_ARGS(root, num_bytes, empty_size, data),
+
+	TP_STRUCT__entry(
+		__field(	u64,	root_objectid		)
+		__field(	u64,	num_bytes		)
+		__field(	u64,	empty_size		)
+		__field(	u64,	data			)
+	),
+
+	TP_fast_assign(
+		__entry->root_objectid	= root->root_key.objectid;
+		__entry->num_bytes	= num_bytes;
+		__entry->empty_size	= empty_size;
+		__entry->data		= data;
+	),
+
+	TP_printk("root = %Lu(%s), len = %Lu, empty_size = %Lu, "
+		  "flags = %Lu(%s)", show_root_type(__entry->root_objectid),
+		  __entry->num_bytes, __entry->empty_size, __entry->data,
+		  __print_flags((unsigned long)__entry->data, "|",
+				 BTRFS_GROUP_FLAGS))
+);
+
+DECLARE_EVENT_CLASS(btrfs__reserve_extent,
+
+	TP_PROTO(struct btrfs_root *root,
+		 struct btrfs_block_group_cache *block_group, u64 start,
+		 u64 len),
+
+	TP_ARGS(root, block_group, start, len),
+
+	TP_STRUCT__entry(
+		__field(	u64,	root_objectid		)
+		__field(	u64,	bg_objectid		)
+		__field(	u64,	flags			)
+		__field(	u64,	start			)
+		__field(	u64,	len			)
+	),
+
+	TP_fast_assign(
+		__entry->root_objectid	= root->root_key.objectid;
+		__entry->bg_objectid	= block_group->key.objectid;
+		__entry->flags		= block_group->flags;
+		__entry->start		= start;
+		__entry->len		= len;
+	),
+
+	TP_printk("root = %Lu(%s), block_group = %Lu, flags = %Lu(%s), "
+		  "start = %Lu, len = %Lu",
+		  show_root_type(__entry->root_objectid), __entry->bg_objectid,
+		  __entry->flags, __print_flags((unsigned long)__entry->flags,
+						"|", BTRFS_GROUP_FLAGS),
+		  __entry->start, __entry->len)
+);
+
+DEFINE_EVENT(btrfs__reserve_extent, btrfs_reserve_extent,
+
+	TP_PROTO(struct btrfs_root *root,
+		 struct btrfs_block_group_cache *block_group, u64 start,
+		 u64 len),
+
+	TP_ARGS(root, block_group, start, len)
+);
+
+DEFINE_EVENT(btrfs__reserve_extent, btrfs_reserve_extent_cluster,
+
+	TP_PROTO(struct btrfs_root *root,
+		 struct btrfs_block_group_cache *block_group, u64 start,
+		 u64 len),
+
+	TP_ARGS(root, block_group, start, len)
+);
+
+TRACE_EVENT(btrfs_find_cluster,
+
+	TP_PROTO(struct btrfs_block_group_cache *block_group, u64 start,
+		 u64 bytes, u64 empty_size, u64 min_bytes),
+
+	TP_ARGS(block_group, start, bytes, empty_size, min_bytes),
+
+	TP_STRUCT__entry(
+		__field(	u64,	bg_objectid		)
+		__field(	u64,	flags			)
+		__field(	u64,	start			)
+		__field(	u64,	bytes			)
+		__field(	u64,	empty_size		)
+		__field(	u64,	min_bytes		)
+	),
+
+	TP_fast_assign(
+		__entry->bg_objectid	= block_group->key.objectid;
+		__entry->flags		= block_group->flags;
+		__entry->start		= start;
+		__entry->bytes		= bytes;
+		__entry->empty_size	= empty_size;
+		__entry->min_bytes	= min_bytes;
+	),
+
+	TP_printk("block_group = %Lu, flags = %Lu(%s), start = %Lu, len = %Lu,"
+		  " empty_size = %Lu, min_bytes = %Lu", __entry->bg_objectid,
+		  __entry->flags,
+		  __print_flags((unsigned long)__entry->flags, "|",
+				BTRFS_GROUP_FLAGS), __entry->start,
+		  __entry->bytes, __entry->empty_size,  __entry->min_bytes)
+);
+
+TRACE_EVENT(btrfs_failed_cluster_setup,
+
+	TP_PROTO(struct btrfs_block_group_cache *block_group),
+
+	TP_ARGS(block_group),
+
+	TP_STRUCT__entry(
+		__field(	u64,	bg_objectid		)
+	),
+
+	TP_fast_assign(
+		__entry->bg_objectid	= block_group->key.objectid;
+	),
+
+	TP_printk("block_group = %Lu", __entry->bg_objectid)
+);
+
+TRACE_EVENT(btrfs_setup_cluster,
+
+	TP_PROTO(struct btrfs_block_group_cache *block_group,
+		 struct btrfs_free_cluster *cluster, u64 size, int bitmap),
+
+	TP_ARGS(block_group, cluster, size, bitmap),
+
+	TP_STRUCT__entry(
+		__field(	u64,	bg_objectid		)
+		__field(	u64,	flags			)
+		__field(	u64,	start			)
+		__field(	u64,	max_size		)
+		__field(	u64,	size			)
+		__field(	int,	bitmap			)
+	),
+
+	TP_fast_assign(
+		__entry->bg_objectid	= block_group->key.objectid;
+		__entry->flags		= block_group->flags;
+		__entry->start		= cluster->window_start;
+		__entry->max_size	= cluster->max_size;
+		__entry->size		= size;
+		__entry->bitmap		= bitmap;
+	),
+
+	TP_printk("block_group = %Lu, flags = %Lu(%s), window_start = %Lu, "
+		  "size = %Lu, max_size = %Lu, bitmap = %d",
+		  __entry->bg_objectid,
+		  __entry->flags,
+		  __print_flags((unsigned long)__entry->flags, "|",
+				BTRFS_GROUP_FLAGS), __entry->start,
+		  __entry->size, __entry->max_size, __entry->bitmap)
+);
+
 #endif /* _TRACE_BTRFS_H */
 
 /* This part must be outside protection */
diff --git a/init/Kconfig b/init/Kconfig
index 6ac2236..3f42cd6 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -355,7 +355,7 @@
 
 config AUDITSYSCALL
 	bool "Enable system-call auditing support"
-	depends on AUDIT && (X86 || PPC || S390 || IA64 || UML || SPARC64 || SUPERH)
+	depends on AUDIT && (X86 || PPC || S390 || IA64 || UML || SPARC64 || SUPERH || ARM)
 	default y if SECURITY_SELINUX
 	help
 	  Enable low-overhead system-call auditing infrastructure that
@@ -372,6 +372,20 @@
 	depends on AUDITSYSCALL
 	select FSNOTIFY
 
+config AUDIT_LOGINUID_IMMUTABLE
+	bool "Make audit loginuid immutable"
+	depends on AUDIT
+	help
+	  The config option toggles if a task setting its loginuid requires
+	  CAP_SYS_AUDITCONTROL or if that task should require no special permissions
+	  but should instead only allow setting its loginuid if it was never
+	  previously set.  On systems which use systemd or a similar central
+	  process to restart login services this should be set to true.  On older
+	  systems in which an admin would typically have to directly stop and
+	  start processes this should be set to false.  Setting this to true allows
+	  one to drop potentially dangerous capabilites from the login tasks,
+	  but may not be backwards compatible with older init systems.
+
 source "kernel/irq/Kconfig"
 
 menu "RCU Subsystem"
diff --git a/kernel/Makefile b/kernel/Makefile
index f70396e..2d9de86 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -23,6 +23,7 @@
 endif
 
 obj-y += sched/
+obj-y += power/
 
 obj-$(CONFIG_FREEZER) += freezer.o
 obj-$(CONFIG_PROFILING) += profile.o
@@ -52,8 +53,6 @@
 obj-$(CONFIG_UID16) += uid16.o
 obj-$(CONFIG_MODULES) += module.o
 obj-$(CONFIG_KALLSYMS) += kallsyms.o
-obj-$(CONFIG_PM) += power/
-obj-$(CONFIG_FREEZER) += power/
 obj-$(CONFIG_BSD_PROCESS_ACCT) += acct.o
 obj-$(CONFIG_KEXEC) += kexec.o
 obj-$(CONFIG_BACKTRACE_SELF_TEST) += backtracetest.o
diff --git a/kernel/audit.c b/kernel/audit.c
index 57e3f51..bb0eb5b 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -631,7 +631,7 @@
 	}
 
 	*ab = audit_log_start(NULL, GFP_KERNEL, msg_type);
-	audit_log_format(*ab, "user pid=%d uid=%u auid=%u ses=%u",
+	audit_log_format(*ab, "pid=%d uid=%u auid=%u ses=%u",
 			 pid, uid, auid, ses);
 	if (sid) {
 		rc = security_secid_to_secctx(sid, &ctx, &len);
@@ -1423,7 +1423,7 @@
 	char *p, *pathname;
 
 	if (prefix)
-		audit_log_format(ab, " %s", prefix);
+		audit_log_format(ab, "%s", prefix);
 
 	/* We will allow 11 spaces for ' (deleted)' to be appended */
 	pathname = kmalloc(PATH_MAX+11, ab->gfp_mask);
diff --git a/kernel/audit.h b/kernel/audit.h
index 91e7071..8167668 100644
--- a/kernel/audit.h
+++ b/kernel/audit.h
@@ -36,12 +36,8 @@
 	AUDIT_DISABLED,		/* Do not create per-task audit_context.
 				 * No syscall-specific audit records can
 				 * be generated. */
-	AUDIT_SETUP_CONTEXT,	/* Create the per-task audit_context,
-				 * but don't necessarily fill it in at
-				 * syscall entry time (i.e., filter
-				 * instead). */
 	AUDIT_BUILD_CONTEXT,	/* Create the per-task audit_context,
-				 * and always fill it in at syscall
+				 * and fill it in at syscall
 				 * entry time.  This makes a full
 				 * syscall record available if some
 				 * other part of the kernel decides it
diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c
index f8277c8..a6c3f1a 100644
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -235,13 +235,15 @@
 	switch(listnr) {
 	default:
 		goto exit_err;
-	case AUDIT_FILTER_USER:
-	case AUDIT_FILTER_TYPE:
 #ifdef CONFIG_AUDITSYSCALL
 	case AUDIT_FILTER_ENTRY:
+		if (rule->action == AUDIT_ALWAYS)
+			goto exit_err;
 	case AUDIT_FILTER_EXIT:
 	case AUDIT_FILTER_TASK:
 #endif
+	case AUDIT_FILTER_USER:
+	case AUDIT_FILTER_TYPE:
 		;
 	}
 	if (unlikely(rule->action == AUDIT_POSSIBLE)) {
@@ -385,7 +387,7 @@
 				goto exit_free;
 			break;
 		case AUDIT_FILETYPE:
-			if ((f->val & ~S_IFMT) > S_IFMT)
+			if (f->val & ~S_IFMT)
 				goto exit_free;
 			break;
 		case AUDIT_INODE:
@@ -459,6 +461,8 @@
 		case AUDIT_ARG1:
 		case AUDIT_ARG2:
 		case AUDIT_ARG3:
+		case AUDIT_OBJ_UID:
+		case AUDIT_OBJ_GID:
 			break;
 		case AUDIT_ARCH:
 			entry->rule.arch_f = f;
@@ -522,7 +526,6 @@
 				goto exit_free;
 			break;
 		case AUDIT_FILTERKEY:
-			err = -EINVAL;
 			if (entry->rule.filterkey || f->val > AUDIT_MAX_KEY_LEN)
 				goto exit_free;
 			str = audit_unpack_string(&bufp, &remain, f->val);
@@ -536,7 +539,11 @@
 				goto exit_free;
 			break;
 		case AUDIT_FILETYPE:
-			if ((f->val & ~S_IFMT) > S_IFMT)
+			if (f->val & ~S_IFMT)
+				goto exit_free;
+			break;
+		case AUDIT_FIELD_COMPARE:
+			if (f->val > AUDIT_MAX_FIELD_COMPARE)
 				goto exit_free;
 			break;
 		default:
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index e7fe2b0..caaea6e 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -70,9 +70,15 @@
 
 #include "audit.h"
 
+/* flags stating the success for a syscall */
+#define AUDITSC_INVALID 0
+#define AUDITSC_SUCCESS 1
+#define AUDITSC_FAILURE 2
+
 /* AUDIT_NAMES is the number of slots we reserve in the audit_context
- * for saving names from getname(). */
-#define AUDIT_NAMES    20
+ * for saving names from getname().  If we get more names we will allocate
+ * a name dynamically and also add those to the list anchored by names_list. */
+#define AUDIT_NAMES	5
 
 /* Indicates that audit should log the full pathname. */
 #define AUDIT_NAME_FULL -1
@@ -101,9 +107,8 @@
  *
  * Further, in fs/namei.c:path_lookup() we store the inode and device. */
 struct audit_names {
+	struct list_head list;		/* audit_context->names_list */
 	const char	*name;
-	int		name_len;	/* number of name's characters to log */
-	unsigned	name_put;	/* call __putname() for this name */
 	unsigned long	ino;
 	dev_t		dev;
 	umode_t		mode;
@@ -113,6 +118,14 @@
 	u32		osid;
 	struct audit_cap_data fcap;
 	unsigned int	fcap_ver;
+	int		name_len;	/* number of name's characters to log */
+	bool		name_put;	/* call __putname() for this name */
+	/*
+	 * This was an allocated audit_names and not from the array of
+	 * names allocated in the task audit context.  Thus this name
+	 * should be freed on syscall exit
+	 */
+	bool		should_free;
 };
 
 struct audit_aux_data {
@@ -174,8 +187,17 @@
 	long		    return_code;/* syscall return code */
 	u64		    prio;
 	int		    return_valid; /* return code is valid */
-	int		    name_count;
-	struct audit_names  names[AUDIT_NAMES];
+	/*
+	 * The names_list is the list of all audit_names collected during this
+	 * syscall.  The first AUDIT_NAMES entries in the names_list will
+	 * actually be from the preallocated_names array for performance
+	 * reasons.  Except during allocation they should never be referenced
+	 * through the preallocated_names array and should only be found/used
+	 * by running the names_list.
+	 */
+	struct audit_names  preallocated_names[AUDIT_NAMES];
+	int		    name_count; /* total records in names_list */
+	struct list_head    names_list;	/* anchor for struct audit_names->list */
 	char *		    filterkey;	/* key for rule that triggered record */
 	struct path	    pwd;
 	struct audit_context *previous; /* For nested syscalls */
@@ -305,21 +327,21 @@
 	}
 }
 
-static int audit_match_filetype(struct audit_context *ctx, int which)
+static int audit_match_filetype(struct audit_context *ctx, int val)
 {
-	unsigned index = which & ~S_IFMT;
-	umode_t mode = which & S_IFMT;
+	struct audit_names *n;
+	umode_t mode = (umode_t)val;
 
 	if (unlikely(!ctx))
 		return 0;
 
-	if (index >= ctx->name_count)
-		return 0;
-	if (ctx->names[index].ino == -1)
-		return 0;
-	if ((ctx->names[index].mode ^ mode) & S_IFMT)
-		return 0;
-	return 1;
+	list_for_each_entry(n, &ctx->names_list, list) {
+		if ((n->ino != -1) &&
+		    ((n->mode & S_IFMT) == mode))
+			return 1;
+	}
+
+	return 0;
 }
 
 /*
@@ -441,6 +463,134 @@
 	return 0;
 }
 
+static int audit_compare_id(uid_t uid1,
+			    struct audit_names *name,
+			    unsigned long name_offset,
+			    struct audit_field *f,
+			    struct audit_context *ctx)
+{
+	struct audit_names *n;
+	unsigned long addr;
+	uid_t uid2;
+	int rc;
+
+	BUILD_BUG_ON(sizeof(uid_t) != sizeof(gid_t));
+
+	if (name) {
+		addr = (unsigned long)name;
+		addr += name_offset;
+
+		uid2 = *(uid_t *)addr;
+		rc = audit_comparator(uid1, f->op, uid2);
+		if (rc)
+			return rc;
+	}
+
+	if (ctx) {
+		list_for_each_entry(n, &ctx->names_list, list) {
+			addr = (unsigned long)n;
+			addr += name_offset;
+
+			uid2 = *(uid_t *)addr;
+
+			rc = audit_comparator(uid1, f->op, uid2);
+			if (rc)
+				return rc;
+		}
+	}
+	return 0;
+}
+
+static int audit_field_compare(struct task_struct *tsk,
+			       const struct cred *cred,
+			       struct audit_field *f,
+			       struct audit_context *ctx,
+			       struct audit_names *name)
+{
+	switch (f->val) {
+	/* process to file object comparisons */
+	case AUDIT_COMPARE_UID_TO_OBJ_UID:
+		return audit_compare_id(cred->uid,
+					name, offsetof(struct audit_names, uid),
+					f, ctx);
+	case AUDIT_COMPARE_GID_TO_OBJ_GID:
+		return audit_compare_id(cred->gid,
+					name, offsetof(struct audit_names, gid),
+					f, ctx);
+	case AUDIT_COMPARE_EUID_TO_OBJ_UID:
+		return audit_compare_id(cred->euid,
+					name, offsetof(struct audit_names, uid),
+					f, ctx);
+	case AUDIT_COMPARE_EGID_TO_OBJ_GID:
+		return audit_compare_id(cred->egid,
+					name, offsetof(struct audit_names, gid),
+					f, ctx);
+	case AUDIT_COMPARE_AUID_TO_OBJ_UID:
+		return audit_compare_id(tsk->loginuid,
+					name, offsetof(struct audit_names, uid),
+					f, ctx);
+	case AUDIT_COMPARE_SUID_TO_OBJ_UID:
+		return audit_compare_id(cred->suid,
+					name, offsetof(struct audit_names, uid),
+					f, ctx);
+	case AUDIT_COMPARE_SGID_TO_OBJ_GID:
+		return audit_compare_id(cred->sgid,
+					name, offsetof(struct audit_names, gid),
+					f, ctx);
+	case AUDIT_COMPARE_FSUID_TO_OBJ_UID:
+		return audit_compare_id(cred->fsuid,
+					name, offsetof(struct audit_names, uid),
+					f, ctx);
+	case AUDIT_COMPARE_FSGID_TO_OBJ_GID:
+		return audit_compare_id(cred->fsgid,
+					name, offsetof(struct audit_names, gid),
+					f, ctx);
+	/* uid comparisons */
+	case AUDIT_COMPARE_UID_TO_AUID:
+		return audit_comparator(cred->uid, f->op, tsk->loginuid);
+	case AUDIT_COMPARE_UID_TO_EUID:
+		return audit_comparator(cred->uid, f->op, cred->euid);
+	case AUDIT_COMPARE_UID_TO_SUID:
+		return audit_comparator(cred->uid, f->op, cred->suid);
+	case AUDIT_COMPARE_UID_TO_FSUID:
+		return audit_comparator(cred->uid, f->op, cred->fsuid);
+	/* auid comparisons */
+	case AUDIT_COMPARE_AUID_TO_EUID:
+		return audit_comparator(tsk->loginuid, f->op, cred->euid);
+	case AUDIT_COMPARE_AUID_TO_SUID:
+		return audit_comparator(tsk->loginuid, f->op, cred->suid);
+	case AUDIT_COMPARE_AUID_TO_FSUID:
+		return audit_comparator(tsk->loginuid, f->op, cred->fsuid);
+	/* euid comparisons */
+	case AUDIT_COMPARE_EUID_TO_SUID:
+		return audit_comparator(cred->euid, f->op, cred->suid);
+	case AUDIT_COMPARE_EUID_TO_FSUID:
+		return audit_comparator(cred->euid, f->op, cred->fsuid);
+	/* suid comparisons */
+	case AUDIT_COMPARE_SUID_TO_FSUID:
+		return audit_comparator(cred->suid, f->op, cred->fsuid);
+	/* gid comparisons */
+	case AUDIT_COMPARE_GID_TO_EGID:
+		return audit_comparator(cred->gid, f->op, cred->egid);
+	case AUDIT_COMPARE_GID_TO_SGID:
+		return audit_comparator(cred->gid, f->op, cred->sgid);
+	case AUDIT_COMPARE_GID_TO_FSGID:
+		return audit_comparator(cred->gid, f->op, cred->fsgid);
+	/* egid comparisons */
+	case AUDIT_COMPARE_EGID_TO_SGID:
+		return audit_comparator(cred->egid, f->op, cred->sgid);
+	case AUDIT_COMPARE_EGID_TO_FSGID:
+		return audit_comparator(cred->egid, f->op, cred->fsgid);
+	/* sgid comparison */
+	case AUDIT_COMPARE_SGID_TO_FSGID:
+		return audit_comparator(cred->sgid, f->op, cred->fsgid);
+	default:
+		WARN(1, "Missing AUDIT_COMPARE define.  Report as a bug\n");
+		return 0;
+	}
+	return 0;
+}
+
 /* Determine if any context name data matches a rule's watch data */
 /* Compare a task_struct with an audit_rule.  Return 1 on match, 0
  * otherwise.
@@ -457,13 +607,14 @@
 			      bool task_creation)
 {
 	const struct cred *cred;
-	int i, j, need_sid = 1;
+	int i, need_sid = 1;
 	u32 sid;
 
 	cred = rcu_dereference_check(tsk->cred, tsk == current || task_creation);
 
 	for (i = 0; i < rule->field_count; i++) {
 		struct audit_field *f = &rule->fields[i];
+		struct audit_names *n;
 		int result = 0;
 
 		switch (f->type) {
@@ -522,12 +673,14 @@
 			}
 			break;
 		case AUDIT_DEVMAJOR:
-			if (name)
-				result = audit_comparator(MAJOR(name->dev),
-							  f->op, f->val);
-			else if (ctx) {
-				for (j = 0; j < ctx->name_count; j++) {
-					if (audit_comparator(MAJOR(ctx->names[j].dev),	f->op, f->val)) {
+			if (name) {
+				if (audit_comparator(MAJOR(name->dev), f->op, f->val) ||
+				    audit_comparator(MAJOR(name->rdev), f->op, f->val))
+					++result;
+			} else if (ctx) {
+				list_for_each_entry(n, &ctx->names_list, list) {
+					if (audit_comparator(MAJOR(n->dev), f->op, f->val) ||
+					    audit_comparator(MAJOR(n->rdev), f->op, f->val)) {
 						++result;
 						break;
 					}
@@ -535,12 +688,14 @@
 			}
 			break;
 		case AUDIT_DEVMINOR:
-			if (name)
-				result = audit_comparator(MINOR(name->dev),
-							  f->op, f->val);
-			else if (ctx) {
-				for (j = 0; j < ctx->name_count; j++) {
-					if (audit_comparator(MINOR(ctx->names[j].dev), f->op, f->val)) {
+			if (name) {
+				if (audit_comparator(MINOR(name->dev), f->op, f->val) ||
+				    audit_comparator(MINOR(name->rdev), f->op, f->val))
+					++result;
+			} else if (ctx) {
+				list_for_each_entry(n, &ctx->names_list, list) {
+					if (audit_comparator(MINOR(n->dev), f->op, f->val) ||
+					    audit_comparator(MINOR(n->rdev), f->op, f->val)) {
 						++result;
 						break;
 					}
@@ -551,8 +706,32 @@
 			if (name)
 				result = (name->ino == f->val);
 			else if (ctx) {
-				for (j = 0; j < ctx->name_count; j++) {
-					if (audit_comparator(ctx->names[j].ino, f->op, f->val)) {
+				list_for_each_entry(n, &ctx->names_list, list) {
+					if (audit_comparator(n->ino, f->op, f->val)) {
+						++result;
+						break;
+					}
+				}
+			}
+			break;
+		case AUDIT_OBJ_UID:
+			if (name) {
+				result = audit_comparator(name->uid, f->op, f->val);
+			} else if (ctx) {
+				list_for_each_entry(n, &ctx->names_list, list) {
+					if (audit_comparator(n->uid, f->op, f->val)) {
+						++result;
+						break;
+					}
+				}
+			}
+			break;
+		case AUDIT_OBJ_GID:
+			if (name) {
+				result = audit_comparator(name->gid, f->op, f->val);
+			} else if (ctx) {
+				list_for_each_entry(n, &ctx->names_list, list) {
+					if (audit_comparator(n->gid, f->op, f->val)) {
 						++result;
 						break;
 					}
@@ -607,11 +786,10 @@
 					           name->osid, f->type, f->op,
 					           f->lsm_rule, ctx);
 				} else if (ctx) {
-					for (j = 0; j < ctx->name_count; j++) {
-						if (security_audit_rule_match(
-						      ctx->names[j].osid,
-						      f->type, f->op,
-						      f->lsm_rule, ctx)) {
+					list_for_each_entry(n, &ctx->names_list, list) {
+						if (security_audit_rule_match(n->osid, f->type,
+									      f->op, f->lsm_rule,
+									      ctx)) {
 							++result;
 							break;
 						}
@@ -643,8 +821,10 @@
 		case AUDIT_FILETYPE:
 			result = audit_match_filetype(ctx, f->val);
 			break;
+		case AUDIT_FIELD_COMPARE:
+			result = audit_field_compare(tsk, cred, f, ctx, name);
+			break;
 		}
-
 		if (!result)
 			return 0;
 	}
@@ -722,40 +902,53 @@
 	return AUDIT_BUILD_CONTEXT;
 }
 
-/* At syscall exit time, this filter is called if any audit_names[] have been
+/*
+ * Given an audit_name check the inode hash table to see if they match.
+ * Called holding the rcu read lock to protect the use of audit_inode_hash
+ */
+static int audit_filter_inode_name(struct task_struct *tsk,
+				   struct audit_names *n,
+				   struct audit_context *ctx) {
+	int word, bit;
+	int h = audit_hash_ino((u32)n->ino);
+	struct list_head *list = &audit_inode_hash[h];
+	struct audit_entry *e;
+	enum audit_state state;
+
+	word = AUDIT_WORD(ctx->major);
+	bit  = AUDIT_BIT(ctx->major);
+
+	if (list_empty(list))
+		return 0;
+
+	list_for_each_entry_rcu(e, list, list) {
+		if ((e->rule.mask[word] & bit) == bit &&
+		    audit_filter_rules(tsk, &e->rule, ctx, n, &state, false)) {
+			ctx->current_state = state;
+			return 1;
+		}
+	}
+
+	return 0;
+}
+
+/* At syscall exit time, this filter is called if any audit_names have been
  * collected during syscall processing.  We only check rules in sublists at hash
- * buckets applicable to the inode numbers in audit_names[].
+ * buckets applicable to the inode numbers in audit_names.
  * Regarding audit_state, same rules apply as for audit_filter_syscall().
  */
 void audit_filter_inodes(struct task_struct *tsk, struct audit_context *ctx)
 {
-	int i;
-	struct audit_entry *e;
-	enum audit_state state;
+	struct audit_names *n;
 
 	if (audit_pid && tsk->tgid == audit_pid)
 		return;
 
 	rcu_read_lock();
-	for (i = 0; i < ctx->name_count; i++) {
-		int word = AUDIT_WORD(ctx->major);
-		int bit  = AUDIT_BIT(ctx->major);
-		struct audit_names *n = &ctx->names[i];
-		int h = audit_hash_ino((u32)n->ino);
-		struct list_head *list = &audit_inode_hash[h];
 
-		if (list_empty(list))
-			continue;
-
-		list_for_each_entry_rcu(e, list, list) {
-			if ((e->rule.mask[word] & bit) == bit &&
-			    audit_filter_rules(tsk, &e->rule, ctx, n,
-				    	       &state, false)) {
-				rcu_read_unlock();
-				ctx->current_state = state;
-				return;
-			}
-		}
+	list_for_each_entry(n, &ctx->names_list, list) {
+		if (audit_filter_inode_name(tsk, n, ctx))
+			break;
 	}
 	rcu_read_unlock();
 }
@@ -766,7 +959,7 @@
 {
 	struct audit_context *context = tsk->audit_context;
 
-	if (likely(!context))
+	if (!context)
 		return NULL;
 	context->return_valid = return_valid;
 
@@ -799,7 +992,7 @@
 
 static inline void audit_free_names(struct audit_context *context)
 {
-	int i;
+	struct audit_names *n, *next;
 
 #if AUDIT_DEBUG == 2
 	if (context->put_count + context->ino_count != context->name_count) {
@@ -810,10 +1003,9 @@
 		       context->serial, context->major, context->in_syscall,
 		       context->name_count, context->put_count,
 		       context->ino_count);
-		for (i = 0; i < context->name_count; i++) {
+		list_for_each_entry(n, &context->names_list, list) {
 			printk(KERN_ERR "names[%d] = %p = %s\n", i,
-			       context->names[i].name,
-			       context->names[i].name ?: "(null)");
+			       n->name, n->name ?: "(null)");
 		}
 		dump_stack();
 		return;
@@ -824,9 +1016,12 @@
 	context->ino_count  = 0;
 #endif
 
-	for (i = 0; i < context->name_count; i++) {
-		if (context->names[i].name && context->names[i].name_put)
-			__putname(context->names[i].name);
+	list_for_each_entry_safe(n, next, &context->names_list, list) {
+		list_del(&n->list);
+		if (n->name && n->name_put)
+			__putname(n->name);
+		if (n->should_free)
+			kfree(n);
 	}
 	context->name_count = 0;
 	path_put(&context->pwd);
@@ -864,6 +1059,7 @@
 		return NULL;
 	audit_zero_context(context, state);
 	INIT_LIST_HEAD(&context->killed_trees);
+	INIT_LIST_HEAD(&context->names_list);
 	return context;
 }
 
@@ -886,7 +1082,7 @@
 		return 0; /* Return if not auditing. */
 
 	state = audit_filter_task(tsk, &key);
-	if (likely(state == AUDIT_DISABLED))
+	if (state == AUDIT_DISABLED)
 		return 0;
 
 	if (!(context = audit_alloc_context(state))) {
@@ -975,7 +1171,7 @@
 		while (vma) {
 			if ((vma->vm_flags & VM_EXECUTABLE) &&
 			    vma->vm_file) {
-				audit_log_d_path(ab, "exe=",
+				audit_log_d_path(ab, " exe=",
 						 &vma->vm_file->f_path);
 				break;
 			}
@@ -1166,8 +1362,8 @@
 				  struct audit_buffer **ab,
 				  struct audit_aux_data_execve *axi)
 {
-	int i;
-	size_t len, len_sent = 0;
+	int i, len;
+	size_t len_sent = 0;
 	const char __user *p;
 	char *buf;
 
@@ -1324,6 +1520,68 @@
 	audit_log_end(ab);
 }
 
+static void audit_log_name(struct audit_context *context, struct audit_names *n,
+			   int record_num, int *call_panic)
+{
+	struct audit_buffer *ab;
+	ab = audit_log_start(context, GFP_KERNEL, AUDIT_PATH);
+	if (!ab)
+		return; /* audit_panic has been called */
+
+	audit_log_format(ab, "item=%d", record_num);
+
+	if (n->name) {
+		switch (n->name_len) {
+		case AUDIT_NAME_FULL:
+			/* log the full path */
+			audit_log_format(ab, " name=");
+			audit_log_untrustedstring(ab, n->name);
+			break;
+		case 0:
+			/* name was specified as a relative path and the
+			 * directory component is the cwd */
+			audit_log_d_path(ab, " name=", &context->pwd);
+			break;
+		default:
+			/* log the name's directory component */
+			audit_log_format(ab, " name=");
+			audit_log_n_untrustedstring(ab, n->name,
+						    n->name_len);
+		}
+	} else
+		audit_log_format(ab, " name=(null)");
+
+	if (n->ino != (unsigned long)-1) {
+		audit_log_format(ab, " inode=%lu"
+				 " dev=%02x:%02x mode=%#ho"
+				 " ouid=%u ogid=%u rdev=%02x:%02x",
+				 n->ino,
+				 MAJOR(n->dev),
+				 MINOR(n->dev),
+				 n->mode,
+				 n->uid,
+				 n->gid,
+				 MAJOR(n->rdev),
+				 MINOR(n->rdev));
+	}
+	if (n->osid != 0) {
+		char *ctx = NULL;
+		u32 len;
+		if (security_secid_to_secctx(
+			n->osid, &ctx, &len)) {
+			audit_log_format(ab, " osid=%u", n->osid);
+			*call_panic = 2;
+		} else {
+			audit_log_format(ab, " obj=%s", ctx);
+			security_release_secctx(ctx, len);
+		}
+	}
+
+	audit_log_fcaps(ab, n);
+
+	audit_log_end(ab);
+}
+
 static void audit_log_exit(struct audit_context *context, struct task_struct *tsk)
 {
 	const struct cred *cred;
@@ -1331,6 +1589,7 @@
 	struct audit_buffer *ab;
 	struct audit_aux_data *aux;
 	const char *tty;
+	struct audit_names *n;
 
 	/* tsk == current */
 	context->pid = tsk->pid;
@@ -1466,70 +1725,14 @@
 	if (context->pwd.dentry && context->pwd.mnt) {
 		ab = audit_log_start(context, GFP_KERNEL, AUDIT_CWD);
 		if (ab) {
-			audit_log_d_path(ab, "cwd=", &context->pwd);
+			audit_log_d_path(ab, " cwd=", &context->pwd);
 			audit_log_end(ab);
 		}
 	}
-	for (i = 0; i < context->name_count; i++) {
-		struct audit_names *n = &context->names[i];
 
-		ab = audit_log_start(context, GFP_KERNEL, AUDIT_PATH);
-		if (!ab)
-			continue; /* audit_panic has been called */
-
-		audit_log_format(ab, "item=%d", i);
-
-		if (n->name) {
-			switch(n->name_len) {
-			case AUDIT_NAME_FULL:
-				/* log the full path */
-				audit_log_format(ab, " name=");
-				audit_log_untrustedstring(ab, n->name);
-				break;
-			case 0:
-				/* name was specified as a relative path and the
-				 * directory component is the cwd */
-				audit_log_d_path(ab, "name=", &context->pwd);
-				break;
-			default:
-				/* log the name's directory component */
-				audit_log_format(ab, " name=");
-				audit_log_n_untrustedstring(ab, n->name,
-							    n->name_len);
-			}
-		} else
-			audit_log_format(ab, " name=(null)");
-
-		if (n->ino != (unsigned long)-1) {
-			audit_log_format(ab, " inode=%lu"
-					 " dev=%02x:%02x mode=%#ho"
-					 " ouid=%u ogid=%u rdev=%02x:%02x",
-					 n->ino,
-					 MAJOR(n->dev),
-					 MINOR(n->dev),
-					 n->mode,
-					 n->uid,
-					 n->gid,
-					 MAJOR(n->rdev),
-					 MINOR(n->rdev));
-		}
-		if (n->osid != 0) {
-			char *ctx = NULL;
-			u32 len;
-			if (security_secid_to_secctx(
-				n->osid, &ctx, &len)) {
-				audit_log_format(ab, " osid=%u", n->osid);
-				call_panic = 2;
-			} else {
-				audit_log_format(ab, " obj=%s", ctx);
-				security_release_secctx(ctx, len);
-			}
-		}
-
-		audit_log_fcaps(ab, n);
-
-		audit_log_end(ab);
-	}
+	i = 0;
+	list_for_each_entry(n, &context->names_list, list)
+		audit_log_name(context, n, i++, &call_panic);
 
 	/* Send end of event record to help user space know we are finished */
 	ab = audit_log_start(context, GFP_KERNEL, AUDIT_EOE);
@@ -1545,12 +1748,12 @@
  *
  * Called from copy_process and do_exit
  */
-void audit_free(struct task_struct *tsk)
+void __audit_free(struct task_struct *tsk)
 {
 	struct audit_context *context;
 
 	context = audit_get_context(tsk, 0, 0);
-	if (likely(!context))
+	if (!context)
 		return;
 
 	/* Check for system calls that do not go through the exit
@@ -1583,7 +1786,7 @@
  * will only be written if another part of the kernel requests that it
  * be written).
  */
-void audit_syscall_entry(int arch, int major,
+void __audit_syscall_entry(int arch, int major,
 			 unsigned long a1, unsigned long a2,
 			 unsigned long a3, unsigned long a4)
 {
@@ -1591,7 +1794,7 @@
 	struct audit_context *context = tsk->audit_context;
 	enum audit_state     state;
 
-	if (unlikely(!context))
+	if (!context)
 		return;
 
 	/*
@@ -1648,7 +1851,7 @@
 		context->prio = 0;
 		state = audit_filter_syscall(tsk, context, &audit_filter_list[AUDIT_FILTER_ENTRY]);
 	}
-	if (likely(state == AUDIT_DISABLED))
+	if (state == AUDIT_DISABLED)
 		return;
 
 	context->serial     = 0;
@@ -1658,30 +1861,9 @@
 	context->ppid       = 0;
 }
 
-void audit_finish_fork(struct task_struct *child)
-{
-	struct audit_context *ctx = current->audit_context;
-	struct audit_context *p = child->audit_context;
-	if (!p || !ctx)
-		return;
-	if (!ctx->in_syscall || ctx->current_state != AUDIT_RECORD_CONTEXT)
-		return;
-	p->arch = ctx->arch;
-	p->major = ctx->major;
-	memcpy(p->argv, ctx->argv, sizeof(ctx->argv));
-	p->ctime = ctx->ctime;
-	p->dummy = ctx->dummy;
-	p->in_syscall = ctx->in_syscall;
-	p->filterkey = kstrdup(ctx->filterkey, GFP_KERNEL);
-	p->ppid = current->pid;
-	p->prio = ctx->prio;
-	p->current_state = ctx->current_state;
-}
-
 /**
  * audit_syscall_exit - deallocate audit context after a system call
- * @valid: success/failure flag
- * @return_code: syscall return value
+ * @pt_regs: syscall registers
  *
  * Tear down after system call.  If the audit context has been marked as
  * auditable (either because of the AUDIT_RECORD_CONTEXT state from
@@ -1689,14 +1871,18 @@
  * message), then write out the syscall information.  In call cases,
  * free the names stored from getname().
  */
-void audit_syscall_exit(int valid, long return_code)
+void __audit_syscall_exit(int success, long return_code)
 {
 	struct task_struct *tsk = current;
 	struct audit_context *context;
 
-	context = audit_get_context(tsk, valid, return_code);
+	if (success)
+		success = AUDITSC_SUCCESS;
+	else
+		success = AUDITSC_FAILURE;
 
-	if (likely(!context))
+	context = audit_get_context(tsk, success, return_code);
+	if (!context)
 		return;
 
 	if (context->in_syscall && context->current_state == AUDIT_RECORD_CONTEXT)
@@ -1821,6 +2007,30 @@
 #endif
 }
 
+static struct audit_names *audit_alloc_name(struct audit_context *context)
+{
+	struct audit_names *aname;
+
+	if (context->name_count < AUDIT_NAMES) {
+		aname = &context->preallocated_names[context->name_count];
+		memset(aname, 0, sizeof(*aname));
+	} else {
+		aname = kzalloc(sizeof(*aname), GFP_NOFS);
+		if (!aname)
+			return NULL;
+		aname->should_free = true;
+	}
+
+	aname->ino = (unsigned long)-1;
+	list_add_tail(&aname->list, &context->names_list);
+
+	context->name_count++;
+#if AUDIT_DEBUG
+	context->ino_count++;
+#endif
+	return aname;
+}
+
 /**
  * audit_getname - add a name to the list
  * @name: name to add
@@ -1831,9 +2041,7 @@
 void __audit_getname(const char *name)
 {
 	struct audit_context *context = current->audit_context;
-
-	if (IS_ERR(name) || !name)
-		return;
+	struct audit_names *n;
 
 	if (!context->in_syscall) {
 #if AUDIT_DEBUG == 2
@@ -1843,13 +2051,15 @@
 #endif
 		return;
 	}
-	BUG_ON(context->name_count >= AUDIT_NAMES);
-	context->names[context->name_count].name = name;
-	context->names[context->name_count].name_len = AUDIT_NAME_FULL;
-	context->names[context->name_count].name_put = 1;
-	context->names[context->name_count].ino  = (unsigned long)-1;
-	context->names[context->name_count].osid = 0;
-	++context->name_count;
+
+	n = audit_alloc_name(context);
+	if (!n)
+		return;
+
+	n->name = name;
+	n->name_len = AUDIT_NAME_FULL;
+	n->name_put = true;
+
 	if (!context->pwd.dentry)
 		get_fs_pwd(current->fs, &context->pwd);
 }
@@ -1871,12 +2081,13 @@
 		printk(KERN_ERR "%s:%d(:%d): __putname(%p)\n",
 		       __FILE__, __LINE__, context->serial, name);
 		if (context->name_count) {
+			struct audit_names *n;
 			int i;
-			for (i = 0; i < context->name_count; i++)
+
+			list_for_each_entry(n, &context->names_list, list)
 				printk(KERN_ERR "name[%d] = %p = %s\n", i,
-				       context->names[i].name,
-				       context->names[i].name ?: "(null)");
-		}
+				       n->name, n->name ?: "(null)");
+			}
 #endif
 		__putname(name);
 	}
@@ -1897,39 +2108,11 @@
 #endif
 }
 
-static int audit_inc_name_count(struct audit_context *context,
-				const struct inode *inode)
-{
-	if (context->name_count >= AUDIT_NAMES) {
-		if (inode)
-			printk(KERN_DEBUG "audit: name_count maxed, losing inode data: "
-			       "dev=%02x:%02x, inode=%lu\n",
-			       MAJOR(inode->i_sb->s_dev),
-			       MINOR(inode->i_sb->s_dev),
-			       inode->i_ino);
-
-		else
-			printk(KERN_DEBUG "name_count maxed, losing inode data\n");
-		return 1;
-	}
-	context->name_count++;
-#if AUDIT_DEBUG
-	context->ino_count++;
-#endif
-	return 0;
-}
-
-
 static inline int audit_copy_fcaps(struct audit_names *name, const struct dentry *dentry)
 {
 	struct cpu_vfs_cap_data caps;
 	int rc;
 
-	memset(&name->fcap.permitted, 0, sizeof(kernel_cap_t));
-	memset(&name->fcap.inheritable, 0, sizeof(kernel_cap_t));
-	name->fcap.fE = 0;
-	name->fcap_ver = 0;
-
 	if (!dentry)
 		return 0;
 
@@ -1969,30 +2152,25 @@
  */
 void __audit_inode(const char *name, const struct dentry *dentry)
 {
-	int idx;
 	struct audit_context *context = current->audit_context;
 	const struct inode *inode = dentry->d_inode;
+	struct audit_names *n;
 
 	if (!context->in_syscall)
 		return;
-	if (context->name_count
-	    && context->names[context->name_count-1].name
-	    && context->names[context->name_count-1].name == name)
-		idx = context->name_count - 1;
-	else if (context->name_count > 1
-		 && context->names[context->name_count-2].name
-		 && context->names[context->name_count-2].name == name)
-		idx = context->name_count - 2;
-	else {
-		/* FIXME: how much do we care about inodes that have no
-		 * associated name? */
-		if (audit_inc_name_count(context, inode))
-			return;
-		idx = context->name_count - 1;
-		context->names[idx].name = NULL;
+
+	list_for_each_entry_reverse(n, &context->names_list, list) {
+		if (n->name && (n->name == name))
+			goto out;
 	}
+
+	/* unable to find the name from a previous getname() */
+	n = audit_alloc_name(context);
+	if (!n)
+		return;
+out:
 	handle_path(dentry);
-	audit_copy_inode(&context->names[idx], dentry, inode);
+	audit_copy_inode(n, dentry, inode);
 }
 
 /**
@@ -2011,11 +2189,11 @@
 void __audit_inode_child(const struct dentry *dentry,
 			 const struct inode *parent)
 {
-	int idx;
 	struct audit_context *context = current->audit_context;
 	const char *found_parent = NULL, *found_child = NULL;
 	const struct inode *inode = dentry->d_inode;
 	const char *dname = dentry->d_name.name;
+	struct audit_names *n;
 	int dirlen = 0;
 
 	if (!context->in_syscall)
@@ -2025,9 +2203,7 @@
 		handle_one(inode);
 
 	/* parent is more likely, look for it first */
-	for (idx = 0; idx < context->name_count; idx++) {
-		struct audit_names *n = &context->names[idx];
-
+	list_for_each_entry(n, &context->names_list, list) {
 		if (!n->name)
 			continue;
 
@@ -2040,9 +2216,7 @@
 	}
 
 	/* no matching parent, look for matching child */
-	for (idx = 0; idx < context->name_count; idx++) {
-		struct audit_names *n = &context->names[idx];
-
+	list_for_each_entry(n, &context->names_list, list) {
 		if (!n->name)
 			continue;
 
@@ -2060,34 +2234,29 @@
 
 add_names:
 	if (!found_parent) {
-		if (audit_inc_name_count(context, parent))
+		n = audit_alloc_name(context);
+		if (!n)
 			return;
-		idx = context->name_count - 1;
-		context->names[idx].name = NULL;
-		audit_copy_inode(&context->names[idx], NULL, parent);
+		audit_copy_inode(n, NULL, parent);
 	}
 
 	if (!found_child) {
-		if (audit_inc_name_count(context, inode))
+		n = audit_alloc_name(context);
+		if (!n)
 			return;
-		idx = context->name_count - 1;
 
 		/* Re-use the name belonging to the slot for a matching parent
 		 * directory. All names for this context are relinquished in
 		 * audit_free_names() */
 		if (found_parent) {
-			context->names[idx].name = found_parent;
-			context->names[idx].name_len = AUDIT_NAME_FULL;
+			n->name = found_parent;
+			n->name_len = AUDIT_NAME_FULL;
 			/* don't call __putname() */
-			context->names[idx].name_put = 0;
-		} else {
-			context->names[idx].name = NULL;
+			n->name_put = false;
 		}
 
 		if (inode)
-			audit_copy_inode(&context->names[idx], NULL, inode);
-		else
-			context->names[idx].ino = (unsigned long)-1;
+			audit_copy_inode(n, NULL, inode);
 	}
 }
 EXPORT_SYMBOL_GPL(__audit_inode_child);
@@ -2121,19 +2290,28 @@
 static atomic_t session_id = ATOMIC_INIT(0);
 
 /**
- * audit_set_loginuid - set a task's audit_context loginuid
- * @task: task whose audit context is being modified
+ * audit_set_loginuid - set current task's audit_context loginuid
  * @loginuid: loginuid value
  *
  * Returns 0.
  *
  * Called (set) from fs/proc/base.c::proc_loginuid_write().
  */
-int audit_set_loginuid(struct task_struct *task, uid_t loginuid)
+int audit_set_loginuid(uid_t loginuid)
 {
-	unsigned int sessionid = atomic_inc_return(&session_id);
+	struct task_struct *task = current;
 	struct audit_context *context = task->audit_context;
+	unsigned int sessionid;
 
+#ifdef CONFIG_AUDIT_LOGINUID_IMMUTABLE
+	if (task->loginuid != -1)
+		return -EPERM;
+#else /* CONFIG_AUDIT_LOGINUID_IMMUTABLE */
+	if (!capable(CAP_AUDIT_CONTROL))
+		return -EPERM;
+#endif  /* CONFIG_AUDIT_LOGINUID_IMMUTABLE */
+
+	sessionid = atomic_inc_return(&session_id);
 	if (context && context->in_syscall) {
 		struct audit_buffer *ab;
 
@@ -2271,14 +2449,11 @@
 	context->ipc.has_perm = 1;
 }
 
-int audit_bprm(struct linux_binprm *bprm)
+int __audit_bprm(struct linux_binprm *bprm)
 {
 	struct audit_aux_data_execve *ax;
 	struct audit_context *context = current->audit_context;
 
-	if (likely(!audit_enabled || !context || context->dummy))
-		return 0;
-
 	ax = kmalloc(sizeof(*ax), GFP_KERNEL);
 	if (!ax)
 		return -ENOMEM;
@@ -2299,13 +2474,10 @@
  * @args: args array
  *
  */
-void audit_socketcall(int nargs, unsigned long *args)
+void __audit_socketcall(int nargs, unsigned long *args)
 {
 	struct audit_context *context = current->audit_context;
 
-	if (likely(!context || context->dummy))
-		return;
-
 	context->type = AUDIT_SOCKETCALL;
 	context->socketcall.nargs = nargs;
 	memcpy(context->socketcall.args, args, nargs * sizeof(unsigned long));
@@ -2331,13 +2503,10 @@
  *
  * Returns 0 for success or NULL context or < 0 on error.
  */
-int audit_sockaddr(int len, void *a)
+int __audit_sockaddr(int len, void *a)
 {
 	struct audit_context *context = current->audit_context;
 
-	if (likely(!context || context->dummy))
-		return 0;
-
 	if (!context->sockaddr) {
 		void *p = kmalloc(sizeof(struct sockaddr_storage), GFP_KERNEL);
 		if (!p)
@@ -2499,6 +2668,25 @@
 	context->type = AUDIT_MMAP;
 }
 
+static void audit_log_abend(struct audit_buffer *ab, char *reason, long signr)
+{
+	uid_t auid, uid;
+	gid_t gid;
+	unsigned int sessionid;
+
+	auid = audit_get_loginuid(current);
+	sessionid = audit_get_sessionid(current);
+	current_uid_gid(&uid, &gid);
+
+	audit_log_format(ab, "auid=%u uid=%u gid=%u ses=%u",
+			 auid, uid, gid, sessionid);
+	audit_log_task_context(ab);
+	audit_log_format(ab, " pid=%d comm=", current->pid);
+	audit_log_untrustedstring(ab, current->comm);
+	audit_log_format(ab, " reason=");
+	audit_log_string(ab, reason);
+	audit_log_format(ab, " sig=%ld", signr);
+}
 /**
  * audit_core_dumps - record information about processes that end abnormally
  * @signr: signal value
@@ -2509,10 +2697,6 @@
 void audit_core_dumps(long signr)
 {
 	struct audit_buffer *ab;
-	u32 sid;
-	uid_t auid = audit_get_loginuid(current), uid;
-	gid_t gid;
-	unsigned int sessionid = audit_get_sessionid(current);
 
 	if (!audit_enabled)
 		return;
@@ -2521,24 +2705,17 @@
 		return;
 
 	ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_ANOM_ABEND);
-	current_uid_gid(&uid, &gid);
-	audit_log_format(ab, "auid=%u uid=%u gid=%u ses=%u",
-			 auid, uid, gid, sessionid);
-	security_task_getsecid(current, &sid);
-	if (sid) {
-		char *ctx = NULL;
-		u32 len;
+	audit_log_abend(ab, "memory violation", signr);
+	audit_log_end(ab);
+}
 
-		if (security_secid_to_secctx(sid, &ctx, &len))
-			audit_log_format(ab, " ssid=%u", sid);
-		else {
-			audit_log_format(ab, " subj=%s", ctx);
-			security_release_secctx(ctx, len);
-		}
-	}
-	audit_log_format(ab, " pid=%d comm=", current->pid);
-	audit_log_untrustedstring(ab, current->comm);
-	audit_log_format(ab, " sig=%ld", signr);
+void __audit_seccomp(unsigned long syscall)
+{
+	struct audit_buffer *ab;
+
+	ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_ANOM_ABEND);
+	audit_log_abend(ab, "seccomp", SIGKILL);
+	audit_log_format(ab, " syscall=%ld", syscall);
 	audit_log_end(ab);
 }
 
diff --git a/kernel/capability.c b/kernel/capability.c
index 0fcf1c1..3f1adb6 100644
--- a/kernel/capability.c
+++ b/kernel/capability.c
@@ -384,7 +384,7 @@
 		BUG();
 	}
 
-	if (has_ns_capability(current, ns, cap)) {
+	if (security_capable(current_cred(), ns, cap) == 0) {
 		current->flags |= PF_SUPERPRIV;
 		return true;
 	}
diff --git a/kernel/exit.c b/kernel/exit.c
index c447382..294b170 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -964,8 +964,7 @@
 	acct_collect(code, group_dead);
 	if (group_dead)
 		tty_audit_exit();
-	if (unlikely(tsk->audit_context))
-		audit_free(tsk);
+	audit_free(tsk);
 
 	tsk->exit_code = code;
 	taskstats_exit(tsk, group_dead);
diff --git a/kernel/fork.c b/kernel/fork.c
index f3fa188..051f090 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1527,8 +1527,6 @@
 			init_completion(&vfork);
 		}
 
-		audit_finish_fork(p);
-
 		/*
 		 * We set PF_STARTING at creation in case tracing wants to
 		 * use this to distinguish a fully live task from one that
diff --git a/kernel/power/swap.c b/kernel/power/swap.c
index 3739ecc..8742fd0 100644
--- a/kernel/power/swap.c
+++ b/kernel/power/swap.c
@@ -773,8 +773,7 @@
 
 	pr_debug("PM: Free swap pages: %u\n", free_swap);
 
-	required = PAGES_FOR_IO + ((flags & SF_NOCOMPRESS_MODE) ?
-		nr_pages : (nr_pages * LZO_CMP_PAGES) / LZO_UNC_PAGES + 1);
+	required = PAGES_FOR_IO + nr_pages;
 	return free_swap > required;
 }
 
@@ -802,10 +801,12 @@
 		printk(KERN_ERR "PM: Cannot get swap writer\n");
 		return error;
 	}
-	if (!enough_swap(pages, flags)) {
-		printk(KERN_ERR "PM: Not enough free swap\n");
-		error = -ENOSPC;
-		goto out_finish;
+	if (flags & SF_NOCOMPRESS_MODE) {
+		if (!enough_swap(pages, flags)) {
+			printk(KERN_ERR "PM: Not enough free swap\n");
+			error = -ENOSPC;
+			goto out_finish;
+		}
 	}
 	memset(&snapshot, 0, sizeof(struct snapshot_handle));
 	error = snapshot_read_next(&snapshot);
diff --git a/kernel/seccomp.c b/kernel/seccomp.c
index 57d4b13..e8d76c5 100644
--- a/kernel/seccomp.c
+++ b/kernel/seccomp.c
@@ -6,6 +6,7 @@
  * This defines a simple but solid secure-computing mode.
  */
 
+#include <linux/audit.h>
 #include <linux/seccomp.h>
 #include <linux/sched.h>
 #include <linux/compat.h>
@@ -54,6 +55,7 @@
 #ifdef SECCOMP_DEBUG
 	dump_stack();
 #endif
+	audit_seccomp(this_syscall);
 	do_exit(SIGKILL);
 }
 
diff --git a/lib/Kconfig b/lib/Kconfig
index 201e1b3..169eb7c 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -286,25 +286,24 @@
 	  calculations are in fixed point. Module will be called cordic.
 
 config MPILIB
-	tristate "Multiprecision maths library"
+	tristate
 	help
 	  Multiprecision maths library from GnuPG.
 	  It is used to implement RSA digital signature verification,
 	  which is used by IMA/EVM digital signature extension.
 
 config MPILIB_EXTRA
-	bool "Multiprecision maths library - additional sources"
+	bool
 	depends on MPILIB
 	help
-	  Multiprecision maths library from GnuPG.
-	  It is used to implement RSA digital signature verification,
-	  which is used by IMA/EVM digital signature extension.
-	  This code in unnecessary for RSA digital signature verification,
-	  and can be compiled if needed.
+	  Additional sources of multiprecision maths library from GnuPG.
+	  This code is unnecessary for RSA digital signature verification,
+	  but can be compiled if needed.
 
-config DIGSIG
-	tristate "In-kernel signature checker"
-	depends on KEYS
+config SIGNATURE
+	tristate
+	depends on KEYS && CRYPTO
+	select CRYPTO_SHA1
 	select MPILIB
 	help
 	  Digital signature verification. Currently only RSA is supported.
diff --git a/lib/Makefile b/lib/Makefile
index dace162..d71aae1 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -119,7 +119,7 @@
 obj-$(CONFIG_DQL) += dynamic_queue_limits.o
 
 obj-$(CONFIG_MPILIB) += mpi/
-obj-$(CONFIG_DIGSIG) += digsig.o
+obj-$(CONFIG_SIGNATURE) += digsig.o
 
 hostprogs-y	:= gen_crc32table
 clean-files	:= crc32table.h
diff --git a/lib/mpi/mpicoder.c b/lib/mpi/mpicoder.c
index fe84bb9..716802b 100644
--- a/lib/mpi/mpicoder.c
+++ b/lib/mpi/mpicoder.c
@@ -255,6 +255,8 @@
 	if (!n)
 		n++;		/* avoid zero length allocation */
 	p = buffer = kmalloc(n, GFP_KERNEL);
+	if (!p)
+		return NULL;
 
 	for (i = a->nlimbs - 1; i >= 0; i--) {
 		alimb = a->d[i];
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 602207b..3dbff4d 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -373,7 +373,6 @@
 
 /* Writing them here to avoid exposing memcg's inner layout */
 #ifdef CONFIG_CGROUP_MEM_RES_CTLR_KMEM
-#ifdef CONFIG_INET
 #include <net/sock.h>
 #include <net/ip.h>
 
@@ -420,6 +419,7 @@
 	}
 }
 
+#ifdef CONFIG_INET
 struct cg_proto *tcp_proto_cgroup(struct mem_cgroup *memcg)
 {
 	if (!memcg || mem_cgroup_is_root(memcg))
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index f963f6b..5ba0c84 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -146,7 +146,7 @@
 	unsigned long next_timer = jiffies + br->ageing_time;
 	int i;
 
-	spin_lock_bh(&br->hash_lock);
+	spin_lock(&br->hash_lock);
 	for (i = 0; i < BR_HASH_SIZE; i++) {
 		struct net_bridge_fdb_entry *f;
 		struct hlist_node *h, *n;
@@ -162,7 +162,7 @@
 				next_timer = this_timer;
 		}
 	}
-	spin_unlock_bh(&br->hash_lock);
+	spin_unlock(&br->hash_lock);
 
 	mod_timer(&br->gc_timer, round_jiffies_up(next_timer));
 }
diff --git a/net/caif/caif_dev.c b/net/caif/caif_dev.c
index 61570ee..673728a 100644
--- a/net/caif/caif_dev.c
+++ b/net/caif/caif_dev.c
@@ -146,15 +146,17 @@
 	spin_lock_bh(&caifd->flow_lock);
 	send_xoff = caifd->xoff;
 	caifd->xoff = 0;
-	if (!WARN_ON(caifd->xoff_skb_dtor == NULL)) {
-		WARN_ON(caifd->xoff_skb != skb);
-		dtor = caifd->xoff_skb_dtor;
-		caifd->xoff_skb = NULL;
-		caifd->xoff_skb_dtor = NULL;
-	}
+	dtor = caifd->xoff_skb_dtor;
+
+	if (WARN_ON(caifd->xoff_skb != skb))
+		skb = NULL;
+
+	caifd->xoff_skb = NULL;
+	caifd->xoff_skb_dtor = NULL;
+
 	spin_unlock_bh(&caifd->flow_lock);
 
-	if (dtor)
+	if (dtor && skb)
 		dtor(skb);
 
 	if (send_xoff)
diff --git a/net/caif/caif_usb.c b/net/caif/caif_usb.c
index 5fc9eca..fd7cbf5 100644
--- a/net/caif/caif_usb.c
+++ b/net/caif/caif_usb.c
@@ -11,7 +11,6 @@
 #include <linux/module.h>
 #include <linux/netdevice.h>
 #include <linux/slab.h>
-#include <linux/netdevice.h>
 #include <linux/mii.h>
 #include <linux/usb.h>
 #include <linux/usb/usbnet.h>
@@ -27,7 +26,7 @@
 #define CFUSB_ALIGNMENT 4	/* Number of bytes to align. */
 #define CFUSB_MAX_HEADLEN (CFUSB_PAD_DESCR_SZ + CFUSB_ALIGNMENT-1)
 #define STE_USB_VID 0x04cc	/* USB Product ID for ST-Ericsson */
-#define STE_USB_PID_CAIF 0x2306	/* Product id for CAIF Modems */
+#define STE_USB_PID_CAIF 0x230f	/* Product id for CAIF Modems */
 
 struct cfusbl {
 	struct cflayer layer;
diff --git a/net/core/dev.c b/net/core/dev.c
index f494675..115dee1 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1887,6 +1887,23 @@
 EXPORT_SYMBOL(skb_set_dev);
 #endif /* CONFIG_NET_NS */
 
+static void skb_warn_bad_offload(const struct sk_buff *skb)
+{
+	static const netdev_features_t null_features = 0;
+	struct net_device *dev = skb->dev;
+	const char *driver = "";
+
+	if (dev && dev->dev.parent)
+		driver = dev_driver_string(dev->dev.parent);
+
+	WARN(1, "%s: caps=(%pNF, %pNF) len=%d data_len=%d gso_size=%d "
+	     "gso_type=%d ip_summed=%d\n",
+	     driver, dev ? &dev->features : &null_features,
+	     skb->sk ? &skb->sk->sk_route_caps : &null_features,
+	     skb->len, skb->data_len, skb_shinfo(skb)->gso_size,
+	     skb_shinfo(skb)->gso_type, skb->ip_summed);
+}
+
 /*
  * Invalidate hardware checksum when packet is to be mangled, and
  * complete checksum manually on outgoing path.
@@ -1900,8 +1917,8 @@
 		goto out_set_summed;
 
 	if (unlikely(skb_shinfo(skb)->gso_size)) {
-		/* Let GSO fix up the checksum. */
-		goto out_set_summed;
+		skb_warn_bad_offload(skb);
+		return -EINVAL;
 	}
 
 	offset = skb_checksum_start_offset(skb);
@@ -1961,16 +1978,7 @@
 	__skb_pull(skb, skb->mac_len);
 
 	if (unlikely(skb->ip_summed != CHECKSUM_PARTIAL)) {
-		struct net_device *dev = skb->dev;
-		struct ethtool_drvinfo info = {};
-
-		if (dev && dev->ethtool_ops && dev->ethtool_ops->get_drvinfo)
-			dev->ethtool_ops->get_drvinfo(dev, &info);
-
-		WARN(1, "%s: caps=(%pNF, %pNF) len=%d data_len=%d ip_summed=%d\n",
-		     info.driver, dev ? &dev->features : NULL,
-		     skb->sk ? &skb->sk->sk_route_caps : NULL,
-		     skb->len, skb->data_len, skb->ip_summed);
+		skb_warn_bad_offload(skb);
 
 		if (skb_header_cloned(skb) &&
 		    (err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC)))
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index f3dbd4f..a1727cd 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -929,7 +929,7 @@
 }
 
 static struct netdev_queue_attribute bql_inflight_attribute =
-	__ATTR(inflight, S_IRUGO | S_IWUSR, bql_show_inflight, NULL);
+	__ATTR(inflight, S_IRUGO, bql_show_inflight, NULL);
 
 #define BQL_ATTR(NAME, FIELD)						\
 static ssize_t bql_show_ ## NAME(struct netdev_queue *queue,		\
diff --git a/net/core/secure_seq.c b/net/core/secure_seq.c
index 6fd4460..99b2596 100644
--- a/net/core/secure_seq.c
+++ b/net/core/secure_seq.c
@@ -46,7 +46,7 @@
 
 	memcpy(hash, saddr, 16);
 	for (i = 0; i < 4; i++)
-		secret[i] = net_secret[i] + daddr[i];
+		secret[i] = net_secret[i] + (__force u32)daddr[i];
 	secret[4] = net_secret[4] +
 		(((__force u16)sport << 16) + (__force u16)dport);
 	for (i = 5; i < MD5_MESSAGE_BYTES / 4; i++)
diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c
index 86f13c67..bf4a9c4 100644
--- a/net/ipv4/inetpeer.c
+++ b/net/ipv4/inetpeer.c
@@ -136,7 +136,7 @@
 	for (i = 0; i < n; i++) {
 		if (a->addr.a6[i] == b->addr.a6[i])
 			continue;
-		if (a->addr.a6[i] < b->addr.a6[i])
+		if ((__force u32)a->addr.a6[i] < (__force u32)b->addr.a6[i])
 			return -1;
 		return 1;
 	}
@@ -447,6 +447,7 @@
 		p->rate_last = 0;
 		p->pmtu_expires = 0;
 		p->pmtu_orig = 0;
+		p->redirect_genid = 0;
 		memset(&p->redirect_learned, 0, sizeof(p->redirect_learned));
 
 
diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c
index 7e4ec9f..6e412a6 100644
--- a/net/ipv4/ipconfig.c
+++ b/net/ipv4/ipconfig.c
@@ -141,7 +141,7 @@
 __be32 root_server_addr = NONE;	/* Address of NFS server */
 u8 root_server_path[256] = { 0, };	/* Path to mount as root */
 
-u32 ic_dev_xid;		/* Device under configuration */
+__be32 ic_dev_xid;		/* Device under configuration */
 
 /* vendor class identifier */
 static char vendor_class_identifier[253] __initdata;
@@ -859,9 +859,9 @@
  */
 static void __init ic_do_bootp_ext(u8 *ext)
 {
-       u8 servers;
-       int i;
-	u16 mtu;
+	u8 servers;
+	int i;
+	__be16 mtu;
 
 #ifdef IPCONFIG_DEBUG
 	u8 *c;
diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c
index 43d4c3b..aea5a19 100644
--- a/net/ipv4/ping.c
+++ b/net/ipv4/ping.c
@@ -140,13 +140,14 @@
 		write_lock_bh(&ping_table.lock);
 		hlist_nulls_del(&sk->sk_nulls_node);
 		sock_put(sk);
-		isk->inet_num = isk->inet_sport = 0;
+		isk->inet_num = 0;
+		isk->inet_sport = 0;
 		sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1);
 		write_unlock_bh(&ping_table.lock);
 	}
 }
 
-static struct sock *ping_v4_lookup(struct net *net, u32 saddr, u32 daddr,
+static struct sock *ping_v4_lookup(struct net *net, __be32 saddr, __be32 daddr,
 				   u16 ident, int dif)
 {
 	struct hlist_nulls_head *hslot = ping_hashslot(&ping_table, net, ident);
@@ -154,15 +155,15 @@
 	struct inet_sock *isk;
 	struct hlist_nulls_node *hnode;
 
-	pr_debug("try to find: num = %d, daddr = %ld, dif = %d\n",
-			 (int)ident, (unsigned long)daddr, dif);
+	pr_debug("try to find: num = %d, daddr = %pI4, dif = %d\n",
+			 (int)ident, &daddr, dif);
 	read_lock_bh(&ping_table.lock);
 
 	ping_portaddr_for_each_entry(sk, hnode, hslot) {
 		isk = inet_sk(sk);
 
-		pr_debug("found: %p: num = %d, daddr = %ld, dif = %d\n", sk,
-			 (int)isk->inet_num, (unsigned long)isk->inet_rcv_saddr,
+		pr_debug("found: %p: num = %d, daddr = %pI4, dif = %d\n", sk,
+			 (int)isk->inet_num, &isk->inet_rcv_saddr,
 			 sk->sk_bound_dev_if);
 
 		pr_debug("iterate\n");
@@ -254,7 +255,7 @@
 		sk, addr->sin_addr.s_addr, ntohs(addr->sin_port));
 
 	chk_addr_ret = inet_addr_type(sock_net(sk), addr->sin_addr.s_addr);
-	if (addr->sin_addr.s_addr == INADDR_ANY)
+	if (addr->sin_addr.s_addr == htonl(INADDR_ANY))
 		chk_addr_ret = RTN_LOCAL;
 
 	if ((sysctl_ip_nonlocal_bind == 0 &&
@@ -278,9 +279,9 @@
 		goto out;
 	}
 
-	pr_debug("after bind(): num = %d, daddr = %ld, dif = %d\n",
+	pr_debug("after bind(): num = %d, daddr = %pI4, dif = %d\n",
 		(int)isk->inet_num,
-		(unsigned long) isk->inet_rcv_saddr,
+		&isk->inet_rcv_saddr,
 		(int)sk->sk_bound_dev_if);
 
 	err = 0;
@@ -407,7 +408,7 @@
 struct pingfakehdr {
 	struct icmphdr icmph;
 	struct iovec *iov;
-	u32 wcheck;
+	__wsum wcheck;
 };
 
 static int ping_getfrag(void *from, char * to,
@@ -459,7 +460,7 @@
 	struct rtable *rt = NULL;
 	struct ip_options_data opt_copy;
 	int free = 0;
-	u32 saddr, daddr, faddr;
+	__be32 saddr, daddr, faddr;
 	u8  tos;
 	int err;
 
@@ -696,8 +697,8 @@
 	struct net *net = dev_net(skb->dev);
 	struct iphdr *iph = ip_hdr(skb);
 	struct icmphdr *icmph = icmp_hdr(skb);
-	u32 saddr = iph->saddr;
-	u32 daddr = iph->daddr;
+	__be32 saddr = iph->saddr;
+	__be32 daddr = iph->daddr;
 
 	/* We assume the packet has already been checked by icmp_rcv */
 
diff --git a/net/ipv4/udp_diag.c b/net/ipv4/udp_diag.c
index e5e18cb..8a949f1 100644
--- a/net/ipv4/udp_diag.c
+++ b/net/ipv4/udp_diag.c
@@ -15,7 +15,6 @@
 #include <linux/udp.h>
 #include <net/udp.h>
 #include <net/udplite.h>
-#include <linux/inet_diag.h>
 #include <linux/sock_diag.h>
 
 static int sk_diag_dump(struct sock *sk, struct sk_buff *skb,
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index ae08aee..251e7cd 100644
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -575,7 +575,7 @@
 	}
 	if (np->rxopt.bits.rxorigdstaddr) {
 		struct sockaddr_in6 sin6;
-		u16 *ports = (u16 *) skb_transport_header(skb);
+		__be16 *ports = (__be16 *) skb_transport_header(skb);
 
 		if (skb_transport_offset(skb) + 4 <= skb->len) {
 			/* All current transport protocols have the port numbers in the
diff --git a/net/ipv6/proc.c b/net/ipv6/proc.c
index fdeb6d0..da2e92d 100644
--- a/net/ipv6/proc.c
+++ b/net/ipv6/proc.c
@@ -237,8 +237,8 @@
 	struct inet6_dev *idev = (struct inet6_dev *)seq->private;
 
 	seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex);
-	snmp6_seq_show_item(seq, (void __percpu **)idev->stats.ipv6, NULL,
-			    snmp6_ipstats_list);
+	snmp6_seq_show_item64(seq, (void __percpu **)idev->stats.ipv6,
+			    snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp));
 	snmp6_seq_show_item(seq, NULL, idev->stats.icmpv6dev->mibs,
 			    snmp6_icmp6_list);
 	snmp6_seq_show_icmpv6msg(seq, idev->stats.icmpv6msgdev->mibs);
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 07361df..8c2e3ab 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1091,6 +1091,7 @@
 	else {
 		neigh = ip6_neigh_lookup(&rt->dst, &fl6->daddr);
 		if (IS_ERR(neigh)) {
+			in6_dev_put(idev);
 			dst_free(&rt->dst);
 			return ERR_CAST(neigh);
 		}
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index e60df48..296620d 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -791,7 +791,7 @@
 		if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 			ret = sta_info_move_state_checked(sta,
 					IEEE80211_STA_AUTHORIZED);
-		else
+		else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 			ret = sta_info_move_state_checked(sta,
 					IEEE80211_STA_ASSOC);
 		if (ret)
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index f407427..7514091 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1979,6 +1979,7 @@
 		mesh_path_error_tx(ifmsh->mshcfg.element_ttl, fwd_hdr->addr3,
 				    0, reason, fwd_hdr->addr2, sdata);
 		IEEE80211_IFSTA_MESH_CTR_INC(ifmsh, dropped_frames_no_route);
+		kfree_skb(fwd_skb);
 		return RX_DROP_MONITOR;
 	}
 
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 3c428d4..ff11f6b 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -238,9 +238,11 @@
 	if (sta->dead)
 		return;
 
-	if (!test_sta_flag(sta, WLAN_STA_PS_STA))
+	if (!test_sta_flag(sta, WLAN_STA_PS_STA)) {
+		local_bh_disable();
 		ieee80211_sta_ps_deliver_wakeup(sta);
-	else if (test_and_clear_sta_flag(sta, WLAN_STA_PSPOLL)) {
+		local_bh_enable();
+	} else if (test_and_clear_sta_flag(sta, WLAN_STA_PSPOLL)) {
 		clear_sta_flag(sta, WLAN_STA_PS_DRIVER);
 
 		local_bh_disable();
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index edcd1c7..e05667c 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1001,8 +1001,6 @@
 static ieee80211_tx_result debug_noinline
 ieee80211_tx_h_encrypt(struct ieee80211_tx_data *tx)
 {
-	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
-
 	if (!tx->key)
 		return TX_CONTINUE;
 
@@ -1017,13 +1015,7 @@
 	case WLAN_CIPHER_SUITE_AES_CMAC:
 		return ieee80211_crypto_aes_cmac_encrypt(tx);
 	default:
-		/* handle hw-only algorithm */
-		if (info->control.hw_key) {
-			ieee80211_tx_set_protected(tx);
-			return TX_CONTINUE;
-		}
-		break;
-
+		return ieee80211_crypto_hw_encrypt(tx);
 	}
 
 	return TX_DROP;
diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c
index 422b798..b758350 100644
--- a/net/mac80211/wpa.c
+++ b/net/mac80211/wpa.c
@@ -643,3 +643,22 @@
 
 	return RX_CONTINUE;
 }
+
+ieee80211_tx_result
+ieee80211_crypto_hw_encrypt(struct ieee80211_tx_data *tx)
+{
+	struct sk_buff *skb;
+	struct ieee80211_tx_info *info = NULL;
+
+	skb_queue_walk(&tx->skbs, skb) {
+		info  = IEEE80211_SKB_CB(skb);
+
+		/* handle hw-only algorithm */
+		if (!info->control.hw_key)
+			return TX_DROP;
+	}
+
+	ieee80211_tx_set_protected(tx);
+
+	return TX_CONTINUE;
+}
diff --git a/net/mac80211/wpa.h b/net/mac80211/wpa.h
index baba060..07e33f8 100644
--- a/net/mac80211/wpa.h
+++ b/net/mac80211/wpa.h
@@ -32,5 +32,7 @@
 ieee80211_crypto_aes_cmac_encrypt(struct ieee80211_tx_data *tx);
 ieee80211_rx_result
 ieee80211_crypto_aes_cmac_decrypt(struct ieee80211_rx_data *rx);
+ieee80211_tx_result
+ieee80211_crypto_hw_encrypt(struct ieee80211_tx_data *tx);
 
 #endif /* WPA_H */
diff --git a/net/netfilter/ipset/ip_set_core.c b/net/netfilter/ipset/ip_set_core.c
index 86137b5..32dbf0f 100644
--- a/net/netfilter/ipset/ip_set_core.c
+++ b/net/netfilter/ipset/ip_set_core.c
@@ -77,35 +77,42 @@
 }
 
 /* Unlock, try to load a set type module and lock again */
-static int
-try_to_load_type(const char *name)
+static bool
+load_settype(const char *name)
 {
 	nfnl_unlock();
 	pr_debug("try to load ip_set_%s\n", name);
 	if (request_module("ip_set_%s", name) < 0) {
 		pr_warning("Can't find ip_set type %s\n", name);
 		nfnl_lock();
-		return -IPSET_ERR_FIND_TYPE;
+		return false;
 	}
 	nfnl_lock();
-	return -EAGAIN;
+	return true;
 }
 
 /* Find a set type and reference it */
+#define find_set_type_get(name, family, revision, found)	\
+	__find_set_type_get(name, family, revision, found, false)
+
 static int
-find_set_type_get(const char *name, u8 family, u8 revision,
-		  struct ip_set_type **found)
+__find_set_type_get(const char *name, u8 family, u8 revision,
+		    struct ip_set_type **found, bool retry)
 {
 	struct ip_set_type *type;
 	int err;
 
+	if (retry && !load_settype(name))
+		return -IPSET_ERR_FIND_TYPE;
+
 	rcu_read_lock();
 	*found = find_set_type(name, family, revision);
 	if (*found) {
 		err = !try_module_get((*found)->me) ? -EFAULT : 0;
 		goto unlock;
 	}
-	/* Make sure the type is loaded but we don't support the revision */
+	/* Make sure the type is already loaded
+	 * but we don't support the revision */
 	list_for_each_entry_rcu(type, &ip_set_type_list, list)
 		if (STREQ(type->name, name)) {
 			err = -IPSET_ERR_FIND_TYPE;
@@ -113,7 +120,8 @@
 		}
 	rcu_read_unlock();
 
-	return try_to_load_type(name);
+	return retry ? -IPSET_ERR_FIND_TYPE :
+		__find_set_type_get(name, family, revision, found, true);
 
 unlock:
 	rcu_read_unlock();
@@ -124,12 +132,19 @@
  * If we succeeded, the supported minimal and maximum revisions are
  * filled out.
  */
+#define find_set_type_minmax(name, family, min, max) \
+	__find_set_type_minmax(name, family, min, max, false)
+
 static int
-find_set_type_minmax(const char *name, u8 family, u8 *min, u8 *max)
+__find_set_type_minmax(const char *name, u8 family, u8 *min, u8 *max,
+		       bool retry)
 {
 	struct ip_set_type *type;
 	bool found = false;
 
+	if (retry && !load_settype(name))
+		return -IPSET_ERR_FIND_TYPE;
+
 	*min = 255; *max = 0;
 	rcu_read_lock();
 	list_for_each_entry_rcu(type, &ip_set_type_list, list)
@@ -145,7 +160,8 @@
 	if (found)
 		return 0;
 
-	return try_to_load_type(name);
+	return retry ? -IPSET_ERR_FIND_TYPE :
+		__find_set_type_minmax(name, family, min, max, true);
 }
 
 #define family_name(f)	((f) == AF_INET ? "inet" : \
@@ -1126,6 +1142,7 @@
 	if (ret || !cb->args[2]) {
 		pr_debug("release set %s\n", ip_set_list[index]->name);
 		ip_set_put_byindex(index);
+		cb->args[2] = 0;
 	}
 out:
 	if (nlh) {
diff --git a/net/netfilter/nf_conntrack_helper.c b/net/netfilter/nf_conntrack_helper.c
index 299fec9..bbe23ba 100644
--- a/net/netfilter/nf_conntrack_helper.c
+++ b/net/netfilter/nf_conntrack_helper.c
@@ -121,18 +121,6 @@
 	int ret = 0;
 
 	if (tmpl != NULL) {
-		/* we've got a userspace helper. */
-		if (tmpl->status & IPS_USERSPACE_HELPER) {
-			help = nf_ct_helper_ext_add(ct, flags);
-			if (help == NULL) {
-				ret = -ENOMEM;
-				goto out;
-			}
-			rcu_assign_pointer(help->helper, NULL);
-			__set_bit(IPS_USERSPACE_HELPER_BIT, &ct->status);
-			ret = 0;
-			goto out;
-		}
 		help = nfct_help(tmpl);
 		if (help != NULL)
 			helper = help->helper;
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index 2a4834b..9307b03 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -2042,10 +2042,6 @@
 	}
 	help = nfct_help(ct);
 	if (!help) {
-		err = -EOPNOTSUPP;
-		goto out;
-	}
-	if (test_bit(IPS_USERSPACE_HELPER_BIT, &ct->status)) {
 		if (!cda[CTA_EXPECT_TIMEOUT]) {
 			err = -EINVAL;
 			goto out;
diff --git a/net/netfilter/xt_CT.c b/net/netfilter/xt_CT.c
index 8e87123..0221d10 100644
--- a/net/netfilter/xt_CT.c
+++ b/net/netfilter/xt_CT.c
@@ -62,8 +62,8 @@
 	int ret = 0;
 	u8 proto;
 
-	if (info->flags & ~(XT_CT_NOTRACK | XT_CT_USERSPACE_HELPER))
-		return -EOPNOTSUPP;
+	if (info->flags & ~XT_CT_NOTRACK)
+		return -EINVAL;
 
 	if (info->flags & XT_CT_NOTRACK) {
 		ct = nf_ct_untracked_get();
@@ -92,9 +92,7 @@
 				  GFP_KERNEL))
 		goto err3;
 
-	if (info->flags & XT_CT_USERSPACE_HELPER) {
-		__set_bit(IPS_USERSPACE_HELPER_BIT, &ct->status);
-	} else if (info->helper[0]) {
+	if (info->helper[0]) {
 		ret = -ENOENT;
 		proto = xt_ct_find_proto(par);
 		if (!proto) {
diff --git a/net/netfilter/xt_hashlimit.c b/net/netfilter/xt_hashlimit.c
index 8e49921..d95f9c9 100644
--- a/net/netfilter/xt_hashlimit.c
+++ b/net/netfilter/xt_hashlimit.c
@@ -445,7 +445,6 @@
 {
 	__be16 _ports[2], *ports;
 	u8 nexthdr;
-	__be16 frag_off;
 	int poff;
 
 	memset(dst, 0, sizeof(*dst));
@@ -466,6 +465,9 @@
 		break;
 #if IS_ENABLED(CONFIG_IP6_NF_IPTABLES)
 	case NFPROTO_IPV6:
+	{
+		__be16 frag_off;
+
 		if (hinfo->cfg.mode & XT_HASHLIMIT_HASH_DIP) {
 			memcpy(&dst->ip6.dst, &ipv6_hdr(skb)->daddr,
 			       sizeof(dst->ip6.dst));
@@ -485,6 +487,7 @@
 		if ((int)protoff < 0)
 			return -1;
 		break;
+	}
 #endif
 	default:
 		BUG();
diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index 9a27251..ce64c18 100644
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2007-2011 Nicira Networks.
+ * Copyright (c) 2007-2012 Nicira Networks.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of version 2 of the GNU General Public
@@ -36,7 +36,6 @@
 #include <linux/rcupdate.h>
 #include <linux/tcp.h>
 #include <linux/udp.h>
-#include <linux/version.h>
 #include <linux/ethtool.h>
 #include <linux/wait.h>
 #include <asm/system.h>
@@ -1397,9 +1396,8 @@
 	int i = 0;
 
 	list_for_each_entry(dp, &dps, list_node) {
-		if (i < skip)
-			continue;
-		if (ovs_dp_cmd_fill_info(dp, skb, NETLINK_CB(cb->skb).pid,
+		if (i >= skip &&
+		    ovs_dp_cmd_fill_info(dp, skb, NETLINK_CB(cb->skb).pid,
 					 cb->nlh->nlmsg_seq, NLM_F_MULTI,
 					 OVS_DP_CMD_NEW) < 0)
 			break;
diff --git a/net/openvswitch/datapath.h b/net/openvswitch/datapath.h
index 5b9f884..c73370c 100644
--- a/net/openvswitch/datapath.h
+++ b/net/openvswitch/datapath.h
@@ -25,7 +25,6 @@
 #include <linux/netdevice.h>
 #include <linux/skbuff.h>
 #include <linux/u64_stats_sync.h>
-#include <linux/version.h>
 
 #include "flow.h"
 
diff --git a/net/openvswitch/flow.c b/net/openvswitch/flow.c
index fe7f020..1252c30 100644
--- a/net/openvswitch/flow.c
+++ b/net/openvswitch/flow.c
@@ -32,7 +32,6 @@
 #include <linux/in.h>
 #include <linux/rcupdate.h>
 #include <linux/if_arp.h>
-#include <linux/if_ether.h>
 #include <linux/ip.h>
 #include <linux/ipv6.h>
 #include <linux/tcp.h>
diff --git a/net/openvswitch/vport-internal_dev.c b/net/openvswitch/vport-internal_dev.c
index 8fc28b8..322b8d2 100644
--- a/net/openvswitch/vport-internal_dev.c
+++ b/net/openvswitch/vport-internal_dev.c
@@ -23,7 +23,6 @@
 #include <linux/etherdevice.h>
 #include <linux/ethtool.h>
 #include <linux/skbuff.h>
-#include <linux/version.h>
 
 #include "datapath.h"
 #include "vport-internal_dev.h"
diff --git a/net/openvswitch/vport.c b/net/openvswitch/vport.c
index 7f0ef37..6c066ba 100644
--- a/net/openvswitch/vport.c
+++ b/net/openvswitch/vport.c
@@ -27,7 +27,6 @@
 #include <linux/rcupdate.h>
 #include <linux/rtnetlink.h>
 #include <linux/compat.h>
-#include <linux/version.h>
 
 #include "vport.h"
 #include "vport-internal_dev.h"
diff --git a/scripts/Makefile.headersinst b/scripts/Makefile.headersinst
index a57f5bd..d3bae5e 100644
--- a/scripts/Makefile.headersinst
+++ b/scripts/Makefile.headersinst
@@ -4,12 +4,16 @@
 # header-y  - list files to be installed. They are preprocessed
 #             to remove __KERNEL__ section of the file
 # objhdr-y  - Same as header-y but for generated files
+# genhdr-y  - Same as objhdr-y but in a generated/ directory
 #
 # ==========================================================================
 
 # called may set destination dir (when installing to asm/)
 _dst := $(if $(dst),$(dst),$(obj))
 
+# generated header directory
+gen := $(if $(gen),$(gen),$(subst include/,include/generated/,$(obj)))
+
 kbuild-file := $(srctree)/$(obj)/Kbuild
 include $(kbuild-file)
 
@@ -33,9 +37,10 @@
 
 # all headers files for this dir
 header-y      := $(filter-out $(generic-y), $(header-y))
-all-files     := $(header-y) $(objhdr-y) $(wrapper-files)
+all-files     := $(header-y) $(objhdr-y) $(genhdr-y) $(wrapper-files)
 input-files   := $(addprefix $(srctree)/$(obj)/,$(header-y)) \
-                 $(addprefix $(objtree)/$(obj)/,$(objhdr-y))
+                 $(addprefix $(objtree)/$(obj)/,$(objhdr-y)) \
+                 $(addprefix $(objtree)/$(gen)/,$(genhdr-y))
 output-files  := $(addprefix $(install)/, $(all-files))
 
 # Work out what needs to be removed
@@ -52,6 +57,7 @@
       cmd_install = \
         $(PERL) $< $(srctree)/$(obj) $(install) $(SRCARCH) $(header-y); \
         $(PERL) $< $(objtree)/$(obj) $(install) $(SRCARCH) $(objhdr-y); \
+        $(PERL) $< $(objtree)/$(gen) $(install) $(SRCARCH) $(genhdr-y); \
         for F in $(wrapper-files); do                                   \
                 echo "\#include <asm-generic/$$F>" > $(install)/$$F;    \
         done;                                                           \
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 5d986d9..00c368c 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -93,9 +93,9 @@
 # already
 # $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will 
 # end up in (or would, if it gets compiled in)
-# Note: It's possible that one object gets potentially linked into more
-#       than one module. In that case KBUILD_MODNAME will be set to foo_bar,
-#       where foo and bar are the name of the modules.
+# Note: Files that end up in two or more modules are compiled without the
+#       KBUILD_MODNAME definition. The reason is that any made-up name would
+#       differ in different configs.
 name-fix = $(subst $(comma),_,$(subst -,_,$1))
 basename_flags = -D"KBUILD_BASENAME=KBUILD_STR($(call name-fix,$(basetarget)))"
 modname_flags  = $(if $(filter 1,$(words $(modname))),\
@@ -264,7 +264,7 @@
 	$(call cmd,dt_S_dtb)
 
 quiet_cmd_dtc = DTC     $@
-cmd_dtc = $(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 $(DTC_FLAGS) $<
+cmd_dtc = $(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 $(DTC_FLAGS) -d $(depfile) $<
 
 # Bzip2
 # ---------------------------------------------------------------------------
diff --git a/scripts/checksyscalls.sh b/scripts/checksyscalls.sh
index 3ab316e..d24810f 100755
--- a/scripts/checksyscalls.sh
+++ b/scripts/checksyscalls.sh
@@ -198,11 +198,16 @@
 }
 
 syscall_list() {
-sed -n -e '/^\#define/ s/[^_]*__NR_\([^[:space:]]*\).*/\
-\#if !defined \(__NR_\1\) \&\& !defined \(__IGNORE_\1\)\
-\#warning syscall \1 not implemented\
-\#endif/p' $1
+    grep '^[0-9]' "$1" | sort -n | (
+	while read nr abi name entry ; do
+	    echo <<EOF
+#if !defined(__NR_${name}) && !defined(__IGNORE_${name})
+#warning syscall ${name} not implemented
+#endif
+EOF
+	done
+    )
 }
 
-(ignore_list && syscall_list $(dirname $0)/../arch/x86/include/asm/unistd_32.h) | \
+(ignore_list && syscall_list $(dirname $0)/../arch/x86/syscalls/syscall_32.tbl) | \
 $* -E -x c - > /dev/null
diff --git a/scripts/coccicheck b/scripts/coccicheck
index 1bb1a1b..3c27764 100755
--- a/scripts/coccicheck
+++ b/scripts/coccicheck
@@ -9,14 +9,23 @@
 #    FLAGS="-ignore_unknown_options -very_quiet"
 #    OPTIONS=$*
 
-# Workaround for Coccinelle < 0.2.3
-    FLAGS="-I $srctree/include -very_quiet"
-    shift $(( $# - 1 ))
-    OPTIONS=$1
+    if [ "$KBUILD_EXTMOD" = "" ] ; then
+        # Workaround for Coccinelle < 0.2.3
+        FLAGS="-I $srctree/include -very_quiet"
+        shift $(( $# - 1 ))
+        OPTIONS=$1
+    else
+	echo M= is not currently supported when C=1 or C=2
+	exit 1
+    fi
 else
     ONLINE=0
     FLAGS="-very_quiet"
-    OPTIONS="-dir $srctree"
+    if [ "$KBUILD_EXTMOD" = "" ] ; then
+        OPTIONS="-dir $srctree"
+    else
+        OPTIONS="-dir $KBUILD_EXTMOD -patch $srctree -I $srctree/include -I $KBUILD_EXTMOD/include"
+    fi
 fi
 
 if [ ! -x "$SPATCH" ]; then
diff --git a/scripts/coccinelle/api/devm_request_and_ioremap.cocci b/scripts/coccinelle/api/devm_request_and_ioremap.cocci
new file mode 100644
index 0000000..46beb81
--- /dev/null
+++ b/scripts/coccinelle/api/devm_request_and_ioremap.cocci
@@ -0,0 +1,105 @@
+/// Reimplement a call to devm_request_mem_region followed by a call to ioremap
+/// or ioremap_nocache by a call to devm_request_and_ioremap.
+/// Devm_request_and_ioremap was introduced in
+/// 72f8c0bfa0de64c68ee59f40eb9b2683bffffbb0.  It makes the code much more
+/// concise.
+///
+///
+// Confidence: High
+// Copyright: (C) 2011 Julia Lawall, INRIA/LIP6.  GPLv2.
+// Copyright: (C) 2011 Gilles Muller, INRIA/LiP6.  GPLv2.
+// URL: http://coccinelle.lip6.fr/
+// Comments:
+// Options: -no_includes -include_headers
+
+virtual patch
+virtual org
+virtual report
+virtual context
+
+@nm@
+expression myname;
+identifier i;
+@@
+
+struct platform_driver i = { .driver = { .name = myname } };
+
+@depends on patch@
+expression dev,res,size;
+@@
+
+-if (!devm_request_mem_region(dev, res->start, size,
+-                              \(res->name\|dev_name(dev)\))) {
+-   ...
+-   return ...;
+-}
+... when != res->start
+(
+-devm_ioremap(dev,res->start,size)
++devm_request_and_ioremap(dev,res)
+|
+-devm_ioremap_nocache(dev,res->start,size)
++devm_request_and_ioremap(dev,res)
+)
+... when any
+    when != res->start
+
+// this rule is separate from the previous one, because a single file can
+// have multiple values of myname
+@depends on patch@
+expression dev,res,size;
+expression nm.myname;
+@@
+
+-if (!devm_request_mem_region(dev, res->start, size,myname)) {
+-   ...
+-   return ...;
+-}
+... when != res->start
+(
+-devm_ioremap(dev,res->start,size)
++devm_request_and_ioremap(dev,res)
+|
+-devm_ioremap_nocache(dev,res->start,size)
++devm_request_and_ioremap(dev,res)
+)
+... when any
+    when != res->start
+
+
+@pb depends on org || report || context@
+expression dev,res,size;
+expression nm.myname;
+position p1,p2;
+@@
+
+*if
+  (!devm_request_mem_region@p1(dev, res->start, size,
+                              \(res->name\|dev_name(dev)\|myname\))) {
+   ...
+   return ...;
+}
+... when != res->start
+(
+*devm_ioremap@p2(dev,res->start,size)
+|
+*devm_ioremap_nocache@p2(dev,res->start,size)
+)
+... when any
+    when != res->start
+
+@script:python depends on org@
+p1 << pb.p1;
+p2 << pb.p2;
+@@
+
+cocci.print_main("INFO: replace by devm_request_and_ioremap",p1)
+cocci.print_secs("",p2)
+
+@script:python depends on report@
+p1 << pb.p1;
+p2 << pb.p2;
+@@
+
+msg = "INFO: devm_request_mem_region followed by ioremap on line %s can be replaced by devm_request_and_ioremap" % (p2[0].line)
+coccilib.report.print_report(p1[0],msg)
diff --git a/scripts/coccinelle/api/kstrdup.cocci b/scripts/coccinelle/api/kstrdup.cocci
index e0805ad..07a74b2 100644
--- a/scripts/coccinelle/api/kstrdup.cocci
+++ b/scripts/coccinelle/api/kstrdup.cocci
@@ -1,16 +1,19 @@
 /// Use kstrdup rather than duplicating its implementation
 ///
 // Confidence: High
-// Copyright: (C) 2010 Nicolas Palix, DIKU.  GPLv2.
-// Copyright: (C) 2010 Julia Lawall, DIKU.  GPLv2.
-// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6.  GPLv2.
+// Copyright: (C) 2010-2012 Nicolas Palix.  GPLv2.
+// Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6.  GPLv2.
+// Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6.  GPLv2.
 // URL: http://coccinelle.lip6.fr/
 // Comments:
 // Options: -no_includes -include_headers
 
 virtual patch
+virtual context
+virtual org
+virtual report
 
-@@
+@depends on patch@
 expression from,to;
 expression flag,E1,E2;
 statement S;
@@ -23,7 +26,7 @@
    ... when != \(from = E2 \| to = E2 \)
 -  strcpy(to, from);
 
-@@
+@depends on patch@
 expression x,from,to;
 expression flag,E1,E2,E3;
 statement S;
@@ -37,3 +40,65 @@
     if (to==NULL || ...) S
     ... when != \(x = E3 \| from = E3 \| to = E3 \)
 -   memcpy(to, from, x);
+
+// ---------------------------------------------------------------------
+
+@r1 depends on !patch exists@
+expression from,to;
+expression flag,E1,E2;
+statement S;
+position p1,p2;
+@@
+
+*  to = kmalloc@p1(strlen(from) + 1,flag);
+   ... when != \(from = E1 \| to = E1 \)
+   if (to==NULL || ...) S
+   ... when != \(from = E2 \| to = E2 \)
+*  strcpy@p2(to, from);
+
+@r2 depends on !patch exists@
+expression x,from,to;
+expression flag,E1,E2,E3;
+statement S;
+position p1,p2;
+@@
+
+*   x = strlen(from) + 1;
+    ... when != \( x = E1 \| from = E1 \)
+*   to = \(kmalloc@p1\|kzalloc@p2\)(x,flag);
+    ... when != \(x = E2 \| from = E2 \| to = E2 \)
+    if (to==NULL || ...) S
+    ... when != \(x = E3 \| from = E3 \| to = E3 \)
+*   memcpy@p2(to, from, x);
+
+@script:python depends on org@
+p1 << r1.p1;
+p2 << r1.p2;
+@@
+
+cocci.print_main("WARNING opportunity for kstrdep",p1)
+cocci.print_secs("strcpy",p2)
+
+@script:python depends on org@
+p1 << r2.p1;
+p2 << r2.p2;
+@@
+
+cocci.print_main("WARNING opportunity for kstrdep",p1)
+cocci.print_secs("memcpy",p2)
+
+@script:python depends on report@
+p1 << r1.p1;
+p2 << r1.p2;
+@@
+
+msg = "WARNING opportunity for kstrdep (strcpy on line %s)" % (p2[0].line)
+coccilib.report.print_report(p1[0], msg)
+
+@script:python depends on report@
+p1 << r2.p1;
+p2 << r2.p2;
+@@
+
+msg = "WARNING opportunity for kstrdep (memcpy on line %s)" % (p2[0].line)
+coccilib.report.print_report(p1[0], msg)
diff --git a/scripts/coccinelle/api/memdup.cocci b/scripts/coccinelle/api/memdup.cocci
index b5d7220..4dceab6 100644
--- a/scripts/coccinelle/api/memdup.cocci
+++ b/scripts/coccinelle/api/memdup.cocci
@@ -1,14 +1,17 @@
 /// Use kmemdup rather than duplicating its implementation
 ///
 // Confidence: High
-// Copyright: (C) 2010 Nicolas Palix, DIKU.  GPLv2.
-// Copyright: (C) 2010 Julia Lawall, DIKU.  GPLv2.
-// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6.  GPLv2.
+// Copyright: (C) 2010-2012 Nicolas Palix.  GPLv2.
+// Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6.  GPLv2.
+// Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6.  GPLv2.
 // URL: http://coccinelle.lip6.fr/
 // Comments:
 // Options: -no_includes -include_headers
 
 virtual patch
+virtual context
+virtual org
+virtual report
 
 @r1@
 expression from,to;
@@ -28,7 +31,7 @@
     ... when != \( x = E1 \| from = E1 \)
     to = \(kmalloc@p\|kzalloc@p\)(x,flag);
 
-@@
+@depends on patch@
 expression from,to,size,flag;
 position p != {r1.p,r2.p};
 statement S;
@@ -38,3 +41,26 @@
 +  to = kmemdup(from,size,flag);
    if (to==NULL || ...) S
 -  memcpy(to, from, size);
+
+@r depends on !patch@
+expression from,to,size,flag;
+position p != {r1.p,r2.p};
+statement S;
+@@
+
+*  to = \(kmalloc@p\|kzalloc@p\)(size,flag);
+   to = kmemdup(from,size,flag);
+   if (to==NULL || ...) S
+*  memcpy(to, from, size);
+
+@script:python depends on org@
+p << r.p;
+@@
+
+coccilib.org.print_todo(p[0], "WARNING opportunity for kmemdep")
+
+@script:python depends on report@
+p << r.p;
+@@
+
+coccilib.report.print_report(p[0], "WARNING opportunity for kmemdep")
diff --git a/scripts/coccinelle/api/memdup_user.cocci b/scripts/coccinelle/api/memdup_user.cocci
index 72ce012..2efac28 100644
--- a/scripts/coccinelle/api/memdup_user.cocci
+++ b/scripts/coccinelle/api/memdup_user.cocci
@@ -1,23 +1,25 @@
-/// Use kmemdup_user rather than duplicating its implementation
+/// Use memdup_user rather than duplicating its implementation
 /// This is a little bit restricted to reduce false positives
 ///
 // Confidence: High
-// Copyright: (C) 2010 Nicolas Palix, DIKU.  GPLv2.
-// Copyright: (C) 2010 Julia Lawall, DIKU.  GPLv2.
-// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6.  GPLv2.
+// Copyright: (C) 2010-2012 Nicolas Palix.  GPLv2.
+// Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6.  GPLv2.
+// Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6.  GPLv2.
 // URL: http://coccinelle.lip6.fr/
 // Comments:
 // Options: -no_includes -include_headers
 
 virtual patch
+virtual context
+virtual org
+virtual report
 
-@@
+@depends on patch@
 expression from,to,size,flag;
-position p;
 identifier l1,l2;
 @@
 
--  to = \(kmalloc@p\|kzalloc@p\)(size,flag);
+-  to = \(kmalloc\|kzalloc\)(size,flag);
 +  to = memdup_user(from,size);
    if (
 -      to==NULL
@@ -33,3 +35,26 @@
 -    -EFAULT
 -    ...+>
 -  }
+
+@r depends on !patch@
+expression from,to,size,flag;
+position p;
+statement S1,S2;
+@@
+
+*  to = \(kmalloc@p\|kzalloc@p\)(size,flag);
+   if (to==NULL || ...) S1
+   if (copy_from_user(to, from, size) != 0)
+   S2
+
+@script:python depends on org@
+p << r.p;
+@@
+
+coccilib.org.print_todo(p[0], "WARNING opportunity for memdep_user")
+
+@script:python depends on report@
+p << r.p;
+@@
+
+coccilib.report.print_report(p[0], "WARNING opportunity for memdep_user")
diff --git a/scripts/coccinelle/free/devm_free.cocci b/scripts/coccinelle/free/devm_free.cocci
new file mode 100644
index 0000000..0a1e361
--- /dev/null
+++ b/scripts/coccinelle/free/devm_free.cocci
@@ -0,0 +1,71 @@
+/// Find uses of standard freeing functons on values allocated using devm_
+/// functions.  Values allocated using the devm_functions are freed when
+/// the device is detached, and thus the use of the standard freeing
+/// function would cause a double free.
+/// See Documentation/driver-model/devres.txt for more information.
+///
+/// A difficulty of detecting this problem is that the standard freeing
+/// function might be called from a different function than the one
+/// containing the allocation function.  It is thus necessary to make the
+/// connection between the allocation function and the freeing function.
+/// Here this is done using the specific argument text, which is prone to
+/// false positives.  There is no rule for the request_region and
+/// request_mem_region variants because this heuristic seems to be a bit
+/// less reliable in these cases.
+///
+// Confidence: Moderate
+// Copyright: (C) 2011 Julia Lawall, INRIA/LIP6.  GPLv2.
+// Copyright: (C) 2011 Gilles Muller, INRIA/LiP6.  GPLv2.
+// URL: http://coccinelle.lip6.fr/
+// Comments:
+// Options: -no_includes -include_headers
+
+virtual org
+virtual report
+virtual context
+
+@r depends on context || org || report@
+expression x;
+@@
+
+(
+ x = devm_kzalloc(...)
+|
+ x = devm_request_irq(...)
+|
+ x = devm_ioremap(...)
+|
+ x = devm_ioremap_nocache(...)
+|
+ x = devm_ioport_map(...)
+)
+
+@pb@
+expression r.x;
+position p;
+@@
+
+(
+* kfree@p(x)
+|
+* free_irq@p(x)
+|
+* iounmap@p(x)
+|
+* ioport_unmap@p(x)
+)
+
+@script:python depends on org@
+p << pb.p;
+@@
+
+msg="WARNING: invalid free of devm_ allocated data"
+coccilib.org.print_todo(p[0], msg)
+
+@script:python depends on report@
+p << pb.p;
+@@
+
+msg="WARNING: invalid free of devm_ allocated data"
+coccilib.report.print_report(p[0], msg)
+
diff --git a/scripts/coccinelle/free/kfree.cocci b/scripts/coccinelle/free/kfree.cocci
index f9f79d9..d9ae6d8 100644
--- a/scripts/coccinelle/free/kfree.cocci
+++ b/scripts/coccinelle/free/kfree.cocci
@@ -5,9 +5,9 @@
 //# SCTP_DBG_OBJCNT_DEC that do not actually evaluate their argument
 ///
 // Confidence: Moderate
-// Copyright: (C) 2010 Nicolas Palix, DIKU.  GPLv2.
-// Copyright: (C) 2010 Julia Lawall, DIKU.  GPLv2.
-// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6.  GPLv2.
+// Copyright: (C) 2010-2012 Nicolas Palix.  GPLv2.
+// Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6.  GPLv2.
+// Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6.  GPLv2.
 // URL: http://coccinelle.lip6.fr/
 // Comments:
 // Options: -no_includes -include_headers
@@ -23,7 +23,7 @@
 kfree@p1(E)
 
 @print expression@
-constant char *c;
+constant char [] c;
 expression free.E,E2;
 type T;
 position p;
@@ -37,6 +37,10 @@
 |
  E@p != E2
 |
+ E2 == E@p
+|
+ E2 != E@p
+|
  !E@p
 |
  E@p || ...
@@ -113,5 +117,5 @@
 p2 << r.p2;
 @@
 
-msg = "reference preceded by free on line %s" % (p1[0].line)
+msg = "ERROR: reference preceded by free on line %s" % (p1[0].line)
 coccilib.report.print_report(p2[0],msg)
diff --git a/scripts/coccinelle/iterators/fen.cocci b/scripts/coccinelle/iterators/fen.cocci
index 77bc108..0a40af8 100644
--- a/scripts/coccinelle/iterators/fen.cocci
+++ b/scripts/coccinelle/iterators/fen.cocci
@@ -2,16 +2,19 @@
 /// is no point to call of_node_put on the final value.
 ///
 // Confidence: High
-// Copyright: (C) 2010 Nicolas Palix, DIKU.  GPLv2.
-// Copyright: (C) 2010 Julia Lawall, DIKU.  GPLv2.
-// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6.  GPLv2.
+// Copyright: (C) 2010-2012 Nicolas Palix.  GPLv2.
+// Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6.  GPLv2.
+// Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6.  GPLv2.
 // URL: http://coccinelle.lip6.fr/
 // Comments:
 // Options: -no_includes -include_headers
 
 virtual patch
+virtual context
+virtual org
+virtual report
 
-@@
+@depends on patch@
 iterator name for_each_node_by_name;
 expression np,E;
 identifier l;
@@ -24,7 +27,7 @@
 ... when != np = E
 - of_node_put(np);
 
-@@
+@depends on patch@
 iterator name for_each_node_by_type;
 expression np,E;
 identifier l;
@@ -37,7 +40,7 @@
 ... when != np = E
 - of_node_put(np);
 
-@@
+@depends on patch@
 iterator name for_each_compatible_node;
 expression np,E;
 identifier l;
@@ -50,7 +53,7 @@
 ... when != np = E
 - of_node_put(np);
 
-@@
+@depends on patch@
 iterator name for_each_matching_node;
 expression np,E;
 identifier l;
@@ -62,3 +65,59 @@
 }
 ... when != np = E
 - of_node_put(np);
+
+// ----------------------------------------------------------------------
+
+@r depends on !patch forall@
+//iterator name for_each_node_by_name;
+//iterator name for_each_node_by_type;
+//iterator name for_each_compatible_node;
+//iterator name for_each_matching_node;
+expression np,E;
+identifier l;
+position p1,p2;
+@@
+
+(
+*for_each_node_by_name@p1(np,...)
+{
+  ... when != break;
+      when != goto l;
+}
+|
+*for_each_node_by_type@p1(np,...)
+{
+  ... when != break;
+      when != goto l;
+}
+|
+*for_each_compatible_node@p1(np,...)
+{
+  ... when != break;
+      when != goto l;
+}
+|
+*for_each_matching_node@p1(np,...)
+{
+  ... when != break;
+      when != goto l;
+}
+)
+... when != np = E
+* of_node_put@p2(np);
+
+@script:python depends on org@
+p1 << r.p1;
+p2 << r.p2;
+@@
+
+cocci.print_main("unneeded of_node_put",p2)
+cocci.print_secs("iterator",p1)
+
+@script:python depends on report@
+p1 << r.p1;
+p2 << r.p2;
+@@
+
+msg = "ERROR: of_node_put not needed after iterator on line %s" % (p1[0].line)
+coccilib.report.print_report(p2[0], msg)
diff --git a/scripts/coccinelle/iterators/itnull.cocci b/scripts/coccinelle/iterators/itnull.cocci
index baa4297..259899f 100644
--- a/scripts/coccinelle/iterators/itnull.cocci
+++ b/scripts/coccinelle/iterators/itnull.cocci
@@ -1,20 +1,24 @@
 /// Many iterators have the property that the first argument is always bound
-/// to a real list element, never NULL.  False positives arise for some
-/// iterators that do not have this property, or in cases when the loop
-/// cursor is reassigned.  The latter should only happen when the matched
-/// code is on the way to a loop exit (break, goto, or return).
+/// to a real list element, never NULL.
+//# False positives arise for some iterators that do not have this property,
+//# or in cases when the loop cursor is reassigned.  The latter should only
+//# happen when the matched code is on the way to a loop exit (break, goto,
+//# or return).
 ///
 // Confidence: Moderate
-// Copyright: (C) 2010 Nicolas Palix, DIKU.  GPLv2.
-// Copyright: (C) 2010 Julia Lawall, DIKU.  GPLv2.
-// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6.  GPLv2.
+// Copyright: (C) 2010-2012 Nicolas Palix.  GPLv2.
+// Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6.  GPLv2.
+// Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6.  GPLv2.
 // URL: http://coccinelle.lip6.fr/
 // Comments:
 // Options: -no_includes -include_headers
 
 virtual patch
+virtual context
+virtual org
+virtual report
 
-@@
+@depends on patch@
 iterator I;
 expression x,E,E1,E2;
 statement S,S1,S2;
@@ -55,4 +59,36 @@
   x != NULL
 + )
 )
-  ...> }
\ No newline at end of file
+  ...> }
+
+@r depends on !patch exists@
+iterator I;
+expression x,E;
+position p1,p2;
+@@
+
+*I@p1(x,...)
+{ ... when != x = E
+(
+*  x@p2 == NULL
+|
+*  x@p2 != NULL
+)
+  ... when any
+}
+
+@script:python depends on org@
+p1 << r.p1;
+p2 << r.p2;
+@@
+
+cocci.print_main("iterator-bound variable",p1)
+cocci.print_secs("useless NULL test",p2)
+
+@script:python depends on report@
+p1 << r.p1;
+p2 << r.p2;
+@@
+
+msg = "ERROR: iterator variable bound on line %s cannot be NULL" % (p1[0].line)
+coccilib.report.print_report(p2[0], msg)
diff --git a/scripts/coccinelle/locks/call_kern.cocci b/scripts/coccinelle/locks/call_kern.cocci
index 00af534..8f10b49 100644
--- a/scripts/coccinelle/locks/call_kern.cocci
+++ b/scripts/coccinelle/locks/call_kern.cocci
@@ -1,17 +1,20 @@
 /// Find functions that refer to GFP_KERNEL but are called with locks held.
-/// The proposed change of converting the GFP_KERNEL is not necessarily the
-/// correct one.  It may be desired to unlock the lock, or to not call the
-/// function under the lock in the first place.
+//# The proposed change of converting the GFP_KERNEL is not necessarily the
+//# correct one.  It may be desired to unlock the lock, or to not call the
+//# function under the lock in the first place.
 ///
 // Confidence: Moderate
-// Copyright: (C) 2010 Nicolas Palix, DIKU.  GPLv2.
-// Copyright: (C) 2010 Julia Lawall, DIKU.  GPLv2.
-// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6.  GPLv2.
+// Copyright: (C) 2012 Nicolas Palix.  GPLv2.
+// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6.  GPLv2.
+// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6.  GPLv2.
 // URL: http://coccinelle.lip6.fr/
 // Comments:
 // Options: -no_includes -include_headers
 
 virtual patch
+virtual context
+virtual org
+virtual report
 
 @gfp exists@
 identifier fn;
@@ -32,28 +35,29 @@
  ... when any
 }
 
-@locked@
+@locked exists@
 identifier gfp.fn;
+position p1,p2;
 @@
 
 (
-read_lock_irq
+read_lock_irq@p1
 |
-write_lock_irq
+write_lock_irq@p1
 |
-read_lock_irqsave
+read_lock_irqsave@p1
 |
-write_lock_irqsave
+write_lock_irqsave@p1
 |
-spin_lock
+spin_lock@p1
 |
-spin_trylock
+spin_trylock@p1
 |
-spin_lock_irq
+spin_lock_irq@p1
 |
-spin_lock_irqsave
+spin_lock_irqsave@p1
 |
-local_irq_disable
+local_irq_disable@p1
 )
  (...)
 ...  when != read_unlock_irq(...)
@@ -64,11 +68,38 @@
      when != spin_unlock_irq(...)
      when != spin_unlock_irqrestore(...)
      when != local_irq_enable(...)
-fn(...)
+fn@p2(...)
 
-@depends on locked@
+@depends on locked && patch@
 position gfp.p;
 @@
 
 - GFP_KERNEL@p
 + GFP_ATOMIC
+
+@depends on locked && !patch@
+position gfp.p;
+@@
+
+* GFP_KERNEL@p
+
+@script:python depends on !patch && org@
+p << gfp.p;
+fn << gfp.fn;
+p1 << locked.p1;
+p2 << locked.p2;
+@@
+
+cocci.print_main("lock",p1)
+cocci.print_secs("call",p2)
+cocci.print_secs("GFP_KERNEL",p)
+
+@script:python depends on !patch && report@
+p << gfp.p;
+fn << gfp.fn;
+p1 << locked.p1;
+p2 << locked.p2;
+@@
+
+msg = "ERROR: function %s called on line %s inside lock on line %s but uses GFP_KERNEL" % (fn,p2[0].line,p1[0].line)
+coccilib.report.print_report(p[0], msg)
diff --git a/scripts/coccinelle/locks/flags.cocci b/scripts/coccinelle/locks/flags.cocci
index b4344d8..1c4ffe6 100644
--- a/scripts/coccinelle/locks/flags.cocci
+++ b/scripts/coccinelle/locks/flags.cocci
@@ -1,9 +1,9 @@
 /// Find nested lock+irqsave functions that use the same flags variables
 ///
 // Confidence: High
-// Copyright: (C) 2010 Nicolas Palix, DIKU.  GPLv2.
-// Copyright: (C) 2010 Julia Lawall, DIKU.  GPLv2.
-// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6.  GPLv2.
+// Copyright: (C) 2010-2012 Nicolas Palix.  GPLv2.
+// Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6.  GPLv2.
+// Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6.  GPLv2.
 // URL: http://coccinelle.lip6.fr/
 // Comments:
 // Options: -no_includes -include_headers
@@ -12,7 +12,7 @@
 virtual org
 virtual report
 
-@r@
+@r exists@
 expression lock1,lock2,flags;
 position p1,p2;
 @@
@@ -39,7 +39,7 @@
 write_lock_irqsave@p2(lock2,flags)
 )
 
-@d@
+@d exists@
 expression f <= r.flags;
 expression lock1,lock2,flags;
 position r.p1, r.p2;
@@ -76,5 +76,5 @@
 p2 << r.p2;
 @@
 
-msg="ERROR: nested lock+irqsave that reuses flags from %s." % (p1[0].line)
+msg="ERROR: nested lock+irqsave that reuses flags from line %s." % (p1[0].line)
 coccilib.report.print_report(p2[0], msg)
diff --git a/scripts/coccinelle/locks/mini_lock.cocci b/scripts/coccinelle/locks/mini_lock.cocci
index 7641a29..3267d74 100644
--- a/scripts/coccinelle/locks/mini_lock.cocci
+++ b/scripts/coccinelle/locks/mini_lock.cocci
@@ -6,13 +6,14 @@
 /// function call that releases the lock.
 ///
 // Confidence: Moderate
-// Copyright: (C) 2010 Nicolas Palix, DIKU.  GPLv2.
-// Copyright: (C) 2010 Julia Lawall, DIKU.  GPLv2.
-// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6.  GPLv2.
+// Copyright: (C) 2010-2012 Nicolas Palix.  GPLv2.
+// Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6.  GPLv2.
+// Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6.  GPLv2.
 // URL: http://coccinelle.lip6.fr/
 // Comments:
 // Options: -no_includes -include_headers
 
+virtual context
 virtual org
 virtual report
 
@@ -57,7 +58,7 @@
 
 for(...;...;...) { <+... return@r ...; ...+> }
 
-@err@
+@err exists@
 expression E1;
 position prelocked.p;
 position up != prelocked.p1;
@@ -65,14 +66,14 @@
 identifier lock,unlock;
 @@
 
-lock(E1@p,...);
+*lock(E1@p,...);
 <+... when != E1
 if (...) {
   ... when != E1
-  return@r ...;
+*  return@r ...;
 }
 ...+>
-unlock@up(E1,...);
+*unlock@up(E1,...);
 
 @script:python depends on org@
 p << prelocked.p1;
diff --git a/scripts/coccinelle/misc/doubleinit.cocci b/scripts/coccinelle/misc/doubleinit.cocci
index 156b20a..cf74a00 100644
--- a/scripts/coccinelle/misc/doubleinit.cocci
+++ b/scripts/coccinelle/misc/doubleinit.cocci
@@ -3,9 +3,9 @@
 /// initialization.
 ///
 // Confidence: Low
-// Copyright: (C) 2010 Nicolas Palix, DIKU.  GPLv2.
-// Copyright: (C) 2010 Julia Lawall, DIKU.  GPLv2.
-// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6.  GPLv2.
+// Copyright: (C) 2010-2012 Nicolas Palix.  GPLv2.
+// Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6.  GPLv2.
+// Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6.  GPLv2.
 // URL: http://coccinelle.lip6.fr/
 // Comments: requires at least Coccinelle 0.2.4, lex or parse error otherwise
 // Options: -no_includes -include_headers
@@ -49,5 +49,5 @@
 @@
 
 if int(ps[0].line) < int(pr[0].line) or (int(ps[0].line) == int(pr[0].line) and int(ps[0].column) < int(pr[0].column)):
-  msg = "%s: first occurrence %s, second occurrence %s" % (fld,ps[0].line,pr[0].line)
+  msg = "%s: first occurrence line %s, second occurrence line %s" % (fld,ps[0].line,pr[0].line)
   coccilib.report.print_report(p0[0],msg)
diff --git a/scripts/coccinelle/null/eno.cocci b/scripts/coccinelle/null/eno.cocci
index 4c9c52b..ed961a1 100644
--- a/scripts/coccinelle/null/eno.cocci
+++ b/scripts/coccinelle/null/eno.cocci
@@ -1,16 +1,19 @@
 /// The various basic memory allocation functions don't return ERR_PTR
 ///
 // Confidence: High
-// Copyright: (C) 2010 Nicolas Palix, DIKU.  GPLv2.
-// Copyright: (C) 2010 Julia Lawall, DIKU.  GPLv2.
-// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6.  GPLv2.
+// Copyright: (C) 2010-2012 Nicolas Palix.  GPLv2.
+// Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6.  GPLv2.
+// Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6.  GPLv2.
 // URL: http://coccinelle.lip6.fr/
 // Comments:
 // Options: -no_includes -include_headers
 
 virtual patch
+virtual context
+virtual org
+virtual report
 
-@@
+@depends on patch@
 expression x,E;
 @@
 
@@ -18,3 +21,28 @@
 ... when != x = E
 - IS_ERR(x)
 + !x
+
+@r depends on !patch exists@
+expression x,E;
+position p1,p2;
+@@
+
+*x = \(kmalloc@p1\|kzalloc@p1\|kcalloc@p1\|kmem_cache_alloc@p1\|kmem_cache_zalloc@p1\|kmem_cache_alloc_node@p1\|kmalloc_node@p1\|kzalloc_node@p1\)(...)
+... when != x = E
+* IS_ERR@p2(x)
+
+@script:python depends on org@
+p1 << r.p1;
+p2 << r.p2;
+@@
+
+cocci.print_main("alloc call",p1)
+cocci.print_secs("IS_ERR that should be NULL tests",p2)
+
+@script:python depends on report@
+p1 << r.p1;
+p2 << r.p2;
+@@
+
+msg = "ERROR: allocation function on line %s returns NULL not ERR_PTR on failure" % (p1[0].line)
+coccilib.report.print_report(p2[0], msg)
diff --git a/scripts/dtc/dtc.c b/scripts/dtc/dtc.c
index cbc0193..451c92d 100644
--- a/scripts/dtc/dtc.c
+++ b/scripts/dtc/dtc.c
@@ -71,6 +71,7 @@
 	fprintf(stderr, "\t\t\tasm - assembler source\n");
 	fprintf(stderr, "\t-V <output version>\n");
 	fprintf(stderr, "\t\tBlob version to produce, defaults to %d (relevant for dtb\n\t\tand asm output only)\n", DEFAULT_FDT_VERSION);
+	fprintf(stderr, "\t-d <output dependency file>\n");
 	fprintf(stderr, "\t-R <number>\n");
 	fprintf(stderr, "\t\tMake space for <number> reserve map entries (relevant for \n\t\tdtb and asm output only)\n");
 	fprintf(stderr, "\t-S <bytes>\n");
@@ -99,6 +100,7 @@
 	const char *inform = "dts";
 	const char *outform = "dts";
 	const char *outname = "-";
+	const char *depname = NULL;
 	int force = 0, check = 0, sort = 0;
 	const char *arg;
 	int opt;
@@ -111,7 +113,8 @@
 	minsize    = 0;
 	padsize    = 0;
 
-	while ((opt = getopt(argc, argv, "hI:O:o:V:R:S:p:fcqb:vH:s")) != EOF) {
+	while ((opt = getopt(argc, argv, "hI:O:o:V:d:R:S:p:fcqb:vH:s"))
+			!= EOF) {
 		switch (opt) {
 		case 'I':
 			inform = optarg;
@@ -125,6 +128,9 @@
 		case 'V':
 			outversion = strtol(optarg, NULL, 0);
 			break;
+		case 'd':
+			depname = optarg;
+			break;
 		case 'R':
 			reservenum = strtol(optarg, NULL, 0);
 			break;
@@ -188,6 +194,14 @@
 	fprintf(stderr, "DTC: %s->%s  on file \"%s\"\n",
 		inform, outform, arg);
 
+	if (depname) {
+		depfile = fopen(depname, "w");
+		if (!depfile)
+			die("Couldn't open dependency file %s: %s\n", depname,
+			    strerror(errno));
+		fprintf(depfile, "%s:", outname);
+	}
+
 	if (streq(inform, "dts"))
 		bi = dt_from_source(arg);
 	else if (streq(inform, "fs"))
@@ -197,6 +211,11 @@
 	else
 		die("Unknown input format \"%s\"\n", inform);
 
+	if (depfile) {
+		fputc('\n', depfile);
+		fclose(depfile);
+	}
+
 	if (cmdline_boot_cpuid != -1)
 		bi->boot_cpuid_phys = cmdline_boot_cpuid;
 
diff --git a/scripts/dtc/srcpos.c b/scripts/dtc/srcpos.c
index 2dbc874..36a38e9 100644
--- a/scripts/dtc/srcpos.c
+++ b/scripts/dtc/srcpos.c
@@ -40,6 +40,7 @@
 	return NULL;
 }
 
+FILE *depfile; /* = NULL */
 struct srcfile_state *current_srcfile; /* = NULL */
 
 /* Detect infinite include recursion. */
@@ -67,6 +68,9 @@
 			    strerror(errno));
 	}
 
+	if (depfile)
+		fprintf(depfile, " %s", fullname);
+
 	if (fullnamep)
 		*fullnamep = fullname;
 	else
diff --git a/scripts/dtc/srcpos.h b/scripts/dtc/srcpos.h
index bd7966e..ce980ca 100644
--- a/scripts/dtc/srcpos.h
+++ b/scripts/dtc/srcpos.h
@@ -30,6 +30,7 @@
 	struct srcfile_state *prev;
 };
 
+extern FILE *depfile; /* = NULL */
 extern struct srcfile_state *current_srcfile; /* = NULL */
 
 FILE *srcfile_relative_open(const char *fname, char **fullnamep);
diff --git a/scripts/genksyms/Makefile b/scripts/genksyms/Makefile
index a551090..aca33b9 100644
--- a/scripts/genksyms/Makefile
+++ b/scripts/genksyms/Makefile
@@ -11,3 +11,4 @@
 # dependencies on generated files need to be listed explicitly
 $(obj)/lex.lex.o: $(obj)/keywords.hash.c $(obj)/parse.tab.h
 
+clean-files	:= keywords.hash.c lex.lex.c parse.tab.c parse.tab.h
diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index 914833d..7966265 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -50,9 +50,8 @@
 
 # Create new linux.pot file
 # Adjust charset to UTF-8 in .po file to accept UTF-8 in Kconfig files
-# The symlink is used to repair a deficiency in arch/um
 update-po-config: $(obj)/kxgettext $(obj)/gconf.glade.h
-	$(Q)echo "  GEN config"
+	$(Q)echo "  GEN     config.pot"
 	$(Q)xgettext --default-domain=linux                         \
 	    --add-comments --keyword=_ --keyword=N_                 \
 	    --from-code=UTF-8                                       \
@@ -63,10 +62,11 @@
 	$(Q)(for i in `ls $(srctree)/arch/*/Kconfig      \
 	    $(srctree)/arch/*/um/Kconfig`;               \
 	    do                                           \
-		echo "  GEN $$i";                        \
+		echo "  GEN     $$i";                    \
 		$(obj)/kxgettext $$i                     \
 		     >> $(obj)/config.pot;               \
 	    done )
+	$(Q)echo "  GEN     linux.pot"
 	$(Q)msguniq --sort-by-file --to-code=UTF-8 $(obj)/config.pot \
 	    --output $(obj)/linux.pot
 	$(Q)rm -f $(obj)/config.pot
diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 5a58965..7c7a5a6 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -464,7 +464,7 @@
 		fprintf(fp, "#");
 		if (l) {
 			fprintf(fp, " ");
-			fwrite(p, l, 1, fp);
+			xfwrite(p, l, 1, fp);
 			p += l;
 		}
 		fprintf(fp, "\n");
@@ -537,7 +537,7 @@
 		fprintf(fp, " *");
 		if (l) {
 			fprintf(fp, " ");
-			fwrite(p, l, 1, fp);
+			xfwrite(p, l, 1, fp);
 			p += l;
 		}
 		fprintf(fp, "\n");
diff --git a/scripts/kconfig/expr.h b/scripts/kconfig/expr.h
index 80fce57..d4ecce8 100644
--- a/scripts/kconfig/expr.h
+++ b/scripts/kconfig/expr.h
@@ -10,6 +10,7 @@
 extern "C" {
 #endif
 
+#include <assert.h>
 #include <stdio.h>
 #ifndef __cplusplus
 #include <stdbool.h>
diff --git a/scripts/kconfig/gconf.c b/scripts/kconfig/gconf.c
index 9f44380..adc2306 100644
--- a/scripts/kconfig/gconf.c
+++ b/scripts/kconfig/gconf.c
@@ -683,7 +683,7 @@
 	dialog = gtk_message_dialog_new(GTK_WINDOW(main_wnd),
 					GTK_DIALOG_DESTROY_WITH_PARENT,
 					GTK_MESSAGE_INFO,
-					GTK_BUTTONS_CLOSE, intro_text);
+					GTK_BUTTONS_CLOSE, "%s", intro_text);
 	g_signal_connect_swapped(GTK_OBJECT(dialog), "response",
 				 G_CALLBACK(gtk_widget_destroy),
 				 GTK_OBJECT(dialog));
@@ -701,7 +701,7 @@
 	dialog = gtk_message_dialog_new(GTK_WINDOW(main_wnd),
 					GTK_DIALOG_DESTROY_WITH_PARENT,
 					GTK_MESSAGE_INFO,
-					GTK_BUTTONS_CLOSE, about_text);
+					GTK_BUTTONS_CLOSE, "%s", about_text);
 	g_signal_connect_swapped(GTK_OBJECT(dialog), "response",
 				 G_CALLBACK(gtk_widget_destroy),
 				 GTK_OBJECT(dialog));
@@ -720,7 +720,7 @@
 	dialog = gtk_message_dialog_new(GTK_WINDOW(main_wnd),
 					GTK_DIALOG_DESTROY_WITH_PARENT,
 					GTK_MESSAGE_INFO,
-					GTK_BUTTONS_CLOSE, license_text);
+					GTK_BUTTONS_CLOSE, "%s", license_text);
 	g_signal_connect_swapped(GTK_OBJECT(dialog), "response",
 				 G_CALLBACK(gtk_widget_destroy),
 				 GTK_OBJECT(dialog));
@@ -830,7 +830,7 @@
 static void change_sym_value(struct menu *menu, gint col)
 {
 	struct symbol *sym = menu->sym;
-	tristate oldval, newval;
+	tristate newval;
 
 	if (!sym)
 		return;
@@ -847,7 +847,6 @@
 	switch (sym_get_type(sym)) {
 	case S_BOOLEAN:
 	case S_TRISTATE:
-		oldval = sym_get_tristate_value(sym);
 		if (!sym_tristate_within_range(sym, newval))
 			newval = yes;
 		sym_set_tristate_value(sym, newval);
@@ -1278,7 +1277,6 @@
 	gboolean valid;
 	GtkTreeIter *sibling;
 	struct symbol *sym;
-	struct property *prop;
 	struct menu *menu1, *menu2;
 
 	if (src == &rootmenu)
@@ -1287,7 +1285,6 @@
 	valid = gtk_tree_model_iter_children(model2, child2, dst);
 	for (child1 = src->list; child1; child1 = child1->next) {
 
-		prop = child1->prompt;
 		sym = child1->sym;
 
 	      reparse:
diff --git a/scripts/kconfig/lkc.h b/scripts/kconfig/lkc.h
index b633bdb..c18f2bd 100644
--- a/scripts/kconfig/lkc.h
+++ b/scripts/kconfig/lkc.h
@@ -90,8 +90,10 @@
 /* confdata.c and expr.c */
 static inline void xfwrite(const void *str, size_t len, size_t count, FILE *out)
 {
-	if (fwrite(str, len, count, out) < count)
-		fprintf(stderr, "\nError in writing or end of file.\n");
+	assert(len != 0);
+
+	if (fwrite(str, len, count, out) != count)
+		fprintf(stderr, "Error in writing or end of file.\n");
 }
 
 /* menu.c */
diff --git a/scripts/kconfig/mconf.c b/scripts/kconfig/mconf.c
index 19e200d..2c6286c 100644
--- a/scripts/kconfig/mconf.c
+++ b/scripts/kconfig/mconf.c
@@ -830,6 +830,8 @@
 		fprintf(stderr, _("\n\n"
 				  "Your configuration changes were NOT saved."
 				  "\n\n"));
+		if (res != KEY_ESC)
+			res = 0;
 	}
 
 	return res;
diff --git a/scripts/kconfig/merge_config.sh b/scripts/kconfig/merge_config.sh
new file mode 100644
index 0000000..ceadf0e
--- /dev/null
+++ b/scripts/kconfig/merge_config.sh
@@ -0,0 +1,117 @@
+#!/bin/sh
+#  merge_config.sh - Takes a list of config fragment values, and merges
+#  them one by one. Provides warnings on overridden values, and specified
+#  values that did not make it to the resulting .config file (due to missed
+#  dependencies or config symbol removal).
+#
+#  Portions reused from kconf_check and generate_cfg:
+#  http://git.yoctoproject.org/cgit/cgit.cgi/yocto-kernel-tools/tree/tools/kconf_check
+#  http://git.yoctoproject.org/cgit/cgit.cgi/yocto-kernel-tools/tree/tools/generate_cfg
+#
+#  Copyright (c) 2009-2010 Wind River Systems, Inc.
+#  Copyright 2011 Linaro
+#
+#  This program is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License version 2 as
+#  published by the Free Software Foundation.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+#  See the GNU General Public License for more details.
+
+clean_up() {
+	rm -f $TMP_FILE
+	exit
+}
+trap clean_up HUP INT TERM
+
+usage() {
+	echo "Usage: $0 [OPTIONS] [CONFIG [...]]"
+	echo "  -h    display this help text"
+	echo "  -m    only merge the fragments, do not execute the make command"
+	echo "  -n    use allnoconfig instead of alldefconfig"
+}
+
+MAKE=true
+ALLTARGET=alldefconfig
+
+while true; do
+	case $1 in
+	"-n")
+		ALLTARGET=allnoconfig
+		shift
+		continue
+		;;
+	"-m")
+		MAKE=false
+		shift
+		continue
+		;;
+	"-h")
+		usage
+		exit
+		;;
+	*)
+		break
+		;;
+	esac
+done
+
+
+
+MERGE_LIST=$*
+SED_CONFIG_EXP="s/^\(# \)\{0,1\}\(CONFIG_[a-zA-Z0-9_]*\)[= ].*/\2/p"
+TMP_FILE=$(mktemp ./.tmp.config.XXXXXXXXXX)
+
+# Merge files, printing warnings on overrided values
+for MERGE_FILE in $MERGE_LIST ; do
+	echo "Merging $MERGE_FILE"
+	CFG_LIST=$(sed -n "$SED_CONFIG_EXP" $MERGE_FILE)
+
+	for CFG in $CFG_LIST ; do
+		grep -q -w $CFG $TMP_FILE
+		if [ $? -eq 0 ] ; then
+			PREV_VAL=$(grep -w $CFG $TMP_FILE)
+			NEW_VAL=$(grep -w $CFG $MERGE_FILE)
+			if [ "x$PREV_VAL" != "x$NEW_VAL" ] ; then
+			echo Value of $CFG is redefined by fragment $MERGE_FILE:
+			echo Previous  value: $PREV_VAL
+			echo New value:       $NEW_VAL
+			echo
+			fi
+			sed -i "/$CFG[ =]/d" $TMP_FILE
+		fi
+	done
+	cat $MERGE_FILE >> $TMP_FILE
+done
+
+if [ "$MAKE" = "false" ]; then
+	cp $TMP_FILE .config
+	echo "#"
+	echo "# merged configuration written to .config (needs make)"
+	echo "#"
+	clean_up
+	exit
+fi
+
+# Use the merged file as the starting point for:
+# alldefconfig: Fills in any missing symbols with Kconfig default
+# allnoconfig: Fills in any missing symbols with # CONFIG_* is not set
+make KCONFIG_ALLCONFIG=$TMP_FILE $ALLTARGET
+
+
+# Check all specified config values took (might have missed-dependency issues)
+for CFG in $(sed -n "$SED_CONFIG_EXP" $TMP_FILE); do
+
+	REQUESTED_VAL=$(grep -w -e "$CFG" $TMP_FILE)
+	ACTUAL_VAL=$(grep -w -e "$CFG" .config)
+	if [ "x$REQUESTED_VAL" != "x$ACTUAL_VAL" ] ; then
+		echo "Value requested for $CFG not in final .config"
+		echo "Requested value:  $REQUESTED_VAL"
+		echo "Actual value:     $ACTUAL_VAL"
+		echo ""
+	fi
+done
+
+clean_up
diff --git a/scripts/tags.sh b/scripts/tags.sh
index 38f6617..833813a 100755
--- a/scripts/tags.sh
+++ b/scripts/tags.sh
@@ -132,7 +132,28 @@
 	--regex-asm='/^(ENTRY|_GLOBAL)\(([^)]*)\).*/\2/'        \
 	--regex-c='/^SYSCALL_DEFINE[[:digit:]]?\(([^,)]*).*/sys_\1/' \
 	--regex-c++='/^TRACE_EVENT\(([^,)]*).*/trace_\1/'		\
-	--regex-c++='/^DEFINE_EVENT\([^,)]*, *([^,)]*).*/trace_\1/'
+	--regex-c++='/^DEFINE_EVENT\([^,)]*, *([^,)]*).*/trace_\1/'	\
+	--regex-c++='/PAGEFLAG\(([^,)]*).*/Page\1/'			\
+	--regex-c++='/PAGEFLAG\(([^,)]*).*/SetPage\1/'			\
+	--regex-c++='/PAGEFLAG\(([^,)]*).*/ClearPage\1/'		\
+	--regex-c++='/TESTSETFLAG\(([^,)]*).*/TestSetPage\1/'		\
+	--regex-c++='/TESTPAGEFLAG\(([^,)]*).*/Page\1/'			\
+	--regex-c++='/SETPAGEFLAG\(([^,)]*).*/SetPage\1/'		\
+	--regex-c++='/__SETPAGEFLAG\(([^,)]*).*/__SetPage\1/'		\
+	--regex-c++='/TESTCLEARFLAG\(([^,)]*).*/TestClearPage\1/'	\
+	--regex-c++='/__TESTCLEARFLAG\(([^,)]*).*/TestClearPage\1/'	\
+	--regex-c++='/CLEARPAGEFLAG\(([^,)]*).*/ClearPage\1/'		\
+	--regex-c++='/__CLEARPAGEFLAG\(([^,)]*).*/__ClearPage\1/'	\
+	--regex-c++='/__PAGEFLAG\(([^,)]*).*/__SetPage\1/'		\
+	--regex-c++='/__PAGEFLAG\(([^,)]*).*/__ClearPage\1/'		\
+	--regex-c++='/PAGEFLAG_FALSE\(([^,)]*).*/Page\1/'		\
+	--regex-c++='/TESTSCFLAG\(([^,)]*).*/TestSetPage\1/'		\
+	--regex-c++='/TESTSCFLAG\(([^,)]*).*/TestClearPage\1/'		\
+	--regex-c++='/SETPAGEFLAG_NOOP\(([^,)]*).*/SetPage\1/'		\
+	--regex-c++='/CLEARPAGEFLAG_NOOP\(([^,)]*).*/ClearPage\1/'	\
+	--regex-c++='/__CLEARPAGEFLAG_NOOP\(([^,)]*).*/__ClearPage\1/'	\
+	--regex-c++='/TESTCLEARFLAG_FALSE\(([^,)]*).*/TestClearPage\1/' \
+	--regex-c++='/__TESTCLEARFLAG_FALSE\(([^,)]*).*/__TestClearPage\1/'
 
 	all_kconfigs | xargs $1 -a                              \
 	--langdef=kconfig --language-force=kconfig              \
@@ -146,6 +167,8 @@
 	--langdef=dotconfig --language-force=dotconfig          \
 	--regex-dotconfig='/^#?[[:blank:]]*(CONFIG_[[:alnum:]_]+)/\1/'
 
+	# Remove structure forward declarations.
+	LANG=C sed -i -e '/^\([a-zA-Z_][a-zA-Z0-9_]*\)\t.*\t\/\^struct \1;.*\$\/;"\tx$/d' tags
 }
 
 emacs()
@@ -154,7 +177,28 @@
 	--regex='/^(ENTRY|_GLOBAL)(\([^)]*\)).*/\2/'            \
 	--regex='/^SYSCALL_DEFINE[0-9]?(\([^,)]*\).*/sys_\1/'   \
 	--regex='/^TRACE_EVENT(\([^,)]*\).*/trace_\1/'		\
-	--regex='/^DEFINE_EVENT([^,)]*, *\([^,)]*\).*/trace_\1/'
+	--regex='/^DEFINE_EVENT([^,)]*, *\([^,)]*\).*/trace_\1/' \
+	--regex='/PAGEFLAG\(([^,)]*).*/Page\1/'			\
+	--regex='/PAGEFLAG\(([^,)]*).*/SetPage\1/'		\
+	--regex='/PAGEFLAG\(([^,)]*).*/ClearPage\1/'		\
+	--regex='/TESTSETFLAG\(([^,)]*).*/TestSetPage\1/'	\
+	--regex='/TESTPAGEFLAG\(([^,)]*).*/Page\1/'		\
+	--regex='/SETPAGEFLAG\(([^,)]*).*/SetPage\1/'		\
+	--regex='/__SETPAGEFLAG\(([^,)]*).*/__SetPage\1/'	\
+	--regex='/TESTCLEARFLAG\(([^,)]*).*/TestClearPage\1/'	\
+	--regex='/__TESTCLEARFLAG\(([^,)]*).*/TestClearPage\1/'	\
+	--regex='/CLEARPAGEFLAG\(([^,)]*).*/ClearPage\1/'	\
+	--regex='/__CLEARPAGEFLAG\(([^,)]*).*/__ClearPage\1/'	\
+	--regex='/__PAGEFLAG\(([^,)]*).*/__SetPage\1/'		\
+	--regex='/__PAGEFLAG\(([^,)]*).*/__ClearPage\1/'	\
+	--regex='/PAGEFLAG_FALSE\(([^,)]*).*/Page\1/'		\
+	--regex='/TESTSCFLAG\(([^,)]*).*/TestSetPage\1/'	\
+	--regex='/TESTSCFLAG\(([^,)]*).*/TestClearPage\1/'	\
+	--regex='/SETPAGEFLAG_NOOP\(([^,)]*).*/SetPage\1/'	\
+	--regex='/CLEARPAGEFLAG_NOOP\(([^,)]*).*/ClearPage\1/'	\
+	--regex='/__CLEARPAGEFLAG_NOOP\(([^,)]*).*/__ClearPage\1/' \
+	--regex='/TESTCLEARFLAG_FALSE\(([^,)]*).*/TestClearPage\1/' \
+	--regex='/__TESTCLEARFLAG_FALSE\(([^,)]*).*/__TestClearPage\1/'
 
 	all_kconfigs | xargs $1 -a                              \
 	--regex='/^[ \t]*\(\(menu\)*config\)[ \t]+\([a-zA-Z0-9_]+\)/\3/'
diff --git a/security/integrity/Kconfig b/security/integrity/Kconfig
index d384ea9..5bd1cc1 100644
--- a/security/integrity/Kconfig
+++ b/security/integrity/Kconfig
@@ -3,11 +3,11 @@
 	def_bool y
 	depends on IMA || EVM
 
-config INTEGRITY_DIGSIG
+config INTEGRITY_SIGNATURE
 	boolean "Digital signature verification using multiple keyrings"
 	depends on INTEGRITY && KEYS
 	default n
-	select DIGSIG
+	select SIGNATURE
 	help
 	  This option enables digital signature verification support
 	  using multiple keyrings. It defines separate keyrings for each
diff --git a/security/integrity/Makefile b/security/integrity/Makefile
index bece056..d43799c 100644
--- a/security/integrity/Makefile
+++ b/security/integrity/Makefile
@@ -3,7 +3,7 @@
 #
 
 obj-$(CONFIG_INTEGRITY) += integrity.o
-obj-$(CONFIG_INTEGRITY_DIGSIG) += digsig.o
+obj-$(CONFIG_INTEGRITY_SIGNATURE) += digsig.o
 
 integrity-y := iint.o
 
diff --git a/security/integrity/ima/ima_audit.c b/security/integrity/ima/ima_audit.c
index c5c5a72..2ad942f 100644
--- a/security/integrity/ima/ima_audit.c
+++ b/security/integrity/ima/ima_audit.c
@@ -56,9 +56,11 @@
 		audit_log_format(ab, " name=");
 		audit_log_untrustedstring(ab, fname);
 	}
-	if (inode)
-		audit_log_format(ab, " dev=%s ino=%lu",
-				 inode->i_sb->s_id, inode->i_ino);
+	if (inode) {
+		audit_log_format(ab, " dev=");
+		audit_log_untrustedstring(ab, inode->i_sb->s_id);
+		audit_log_format(ab, " ino=%lu", inode->i_ino);
+	}
 	audit_log_format(ab, " res=%d", !result ? 0 : 1);
 	audit_log_end(ab);
 }
diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c
index d661afb..d45061d 100644
--- a/security/integrity/ima/ima_policy.c
+++ b/security/integrity/ima/ima_policy.c
@@ -99,6 +99,7 @@
 			    struct inode *inode, enum ima_hooks func, int mask)
 {
 	struct task_struct *tsk = current;
+	const struct cred *cred = current_cred();
 	int i;
 
 	if ((rule->flags & IMA_FUNC) && rule->func != func)
@@ -108,7 +109,7 @@
 	if ((rule->flags & IMA_FSMAGIC)
 	    && rule->fsmagic != inode->i_sb->s_magic)
 		return false;
-	if ((rule->flags & IMA_UID) && rule->uid != tsk->cred->uid)
+	if ((rule->flags & IMA_UID) && rule->uid != cred->uid)
 		return false;
 	for (i = 0; i < MAX_LSM_RULES; i++) {
 		int rc = 0;
diff --git a/security/integrity/integrity.h b/security/integrity/integrity.h
index 4da6ba8..7a25ece 100644
--- a/security/integrity/integrity.h
+++ b/security/integrity/integrity.h
@@ -51,7 +51,7 @@
 #define INTEGRITY_KEYRING_IMA		2
 #define INTEGRITY_KEYRING_MAX		3
 
-#ifdef CONFIG_INTEGRITY_DIGSIG
+#ifdef CONFIG_INTEGRITY_SIGNATURE
 
 int integrity_digsig_verify(const unsigned int id, const char *sig, int siglen,
 					const char *digest, int digestlen);
@@ -65,7 +65,7 @@
 	return -EOPNOTSUPP;
 }
 
-#endif /* CONFIG_INTEGRITY_DIGSIG */
+#endif /* CONFIG_INTEGRITY_SIGNATURE */
 
 /* set during initialization */
 extern int iint_initialized;
diff --git a/security/keys/encrypted-keys/encrypted.c b/security/keys/encrypted-keys/encrypted.c
index 41144f7..2d1bb8a 100644
--- a/security/keys/encrypted-keys/encrypted.c
+++ b/security/keys/encrypted-keys/encrypted.c
@@ -314,7 +314,7 @@
 		goto error;
 
 	down_read(&ukey->sem);
-	upayload = rcu_dereference(ukey->payload.data);
+	upayload = ukey->payload.data;
 	*master_key = upayload->data;
 	*master_keylen = upayload->datalen;
 error:
@@ -810,7 +810,7 @@
 		goto out;
 	}
 
-	rcu_assign_pointer(key->payload.data, epayload);
+	rcu_assign_keypointer(key, epayload);
 out:
 	kfree(datablob);
 	return ret;
@@ -874,7 +874,7 @@
 	memcpy(new_epayload->payload_data, epayload->payload_data,
 	       epayload->payload_datalen);
 
-	rcu_assign_pointer(key->payload.data, new_epayload);
+	rcu_assign_keypointer(key, new_epayload);
 	call_rcu(&epayload->rcu, encrypted_rcu_free);
 out:
 	kfree(buf);
diff --git a/security/keys/encrypted-keys/masterkey_trusted.c b/security/keys/encrypted-keys/masterkey_trusted.c
index df87272..013f7e5 100644
--- a/security/keys/encrypted-keys/masterkey_trusted.c
+++ b/security/keys/encrypted-keys/masterkey_trusted.c
@@ -18,6 +18,8 @@
 #include <linux/module.h>
 #include <linux/err.h>
 #include <keys/trusted-type.h>
+#include <keys/encrypted-type.h>
+#include "encrypted.h"
 
 /*
  * request_trusted_key - request the trusted key
@@ -37,7 +39,7 @@
 		goto error;
 
 	down_read(&tkey->sem);
-	tpayload = rcu_dereference(tkey->payload.data);
+	tpayload = tkey->payload.data;
 	*master_key = tpayload->key;
 	*master_keylen = tpayload->key_len;
 error:
diff --git a/security/keys/gc.c b/security/keys/gc.c
index bf4d8da..a42b455 100644
--- a/security/keys/gc.c
+++ b/security/keys/gc.c
@@ -145,7 +145,9 @@
 	if (!klist)
 		goto unlock_dont_gc;
 
-	for (loop = klist->nkeys - 1; loop >= 0; loop--) {
+	loop = klist->nkeys;
+	smp_rmb();
+	for (loop--; loop >= 0; loop--) {
 		key = klist->keys[loop];
 		if (test_bit(KEY_FLAG_DEAD, &key->flags) ||
 		    (key->expiry > 0 && key->expiry <= limit))
diff --git a/security/keys/keyring.c b/security/keys/keyring.c
index 37a7f3b..d605f75 100644
--- a/security/keys/keyring.c
+++ b/security/keys/keyring.c
@@ -319,7 +319,7 @@
 	struct key *keyring, *key;
 	key_ref_t key_ref;
 	long err;
-	int sp, kix;
+	int sp, nkeys, kix;
 
 	keyring = key_ref_to_ptr(keyring_ref);
 	possessed = is_key_possessed(keyring_ref);
@@ -380,7 +380,9 @@
 		goto not_this_keyring;
 
 	/* iterate through the keys in this keyring first */
-	for (kix = 0; kix < keylist->nkeys; kix++) {
+	nkeys = keylist->nkeys;
+	smp_rmb();
+	for (kix = 0; kix < nkeys; kix++) {
 		key = keylist->keys[kix];
 		kflags = key->flags;
 
@@ -421,7 +423,9 @@
 	/* search through the keyrings nested in this one */
 	kix = 0;
 ascend:
-	for (; kix < keylist->nkeys; kix++) {
+	nkeys = keylist->nkeys;
+	smp_rmb();
+	for (; kix < nkeys; kix++) {
 		key = keylist->keys[kix];
 		if (key->type != &key_type_keyring)
 			continue;
@@ -515,7 +519,7 @@
 	struct keyring_list *klist;
 	unsigned long possessed;
 	struct key *keyring, *key;
-	int loop;
+	int nkeys, loop;
 
 	keyring = key_ref_to_ptr(keyring_ref);
 	possessed = is_key_possessed(keyring_ref);
@@ -524,7 +528,9 @@
 
 	klist = rcu_dereference(keyring->payload.subscriptions);
 	if (klist) {
-		for (loop = 0; loop < klist->nkeys; loop++) {
+		nkeys = klist->nkeys;
+		smp_rmb();
+		for (loop = 0; loop < nkeys ; loop++) {
 			key = klist->keys[loop];
 
 			if (key->type == ktype &&
@@ -622,7 +628,7 @@
 
 	struct keyring_list *keylist;
 	struct key *subtree, *key;
-	int sp, kix, ret;
+	int sp, nkeys, kix, ret;
 
 	rcu_read_lock();
 
@@ -645,7 +651,9 @@
 
 ascend:
 	/* iterate through the remaining keys in this keyring */
-	for (; kix < keylist->nkeys; kix++) {
+	nkeys = keylist->nkeys;
+	smp_rmb();
+	for (; kix < nkeys; kix++) {
 		key = keylist->keys[kix];
 
 		if (key == A)
diff --git a/security/keys/trusted.c b/security/keys/trusted.c
index 0ed5fdf..2d5d041 100644
--- a/security/keys/trusted.c
+++ b/security/keys/trusted.c
@@ -993,7 +993,7 @@
 	kfree(datablob);
 	kfree(options);
 	if (!ret)
-		rcu_assign_pointer(key->payload.data, payload);
+		rcu_assign_keypointer(key, payload);
 	else
 		kfree(payload);
 	return ret;
@@ -1067,7 +1067,7 @@
 			goto out;
 		}
 	}
-	rcu_assign_pointer(key->payload.data, new_p);
+	rcu_assign_keypointer(key, new_p);
 	call_rcu(&p->rcu, trusted_rcu_free);
 out:
 	kfree(datablob);
diff --git a/security/keys/user_defined.c b/security/keys/user_defined.c
index 69ff52c..2aee3c5 100644
--- a/security/keys/user_defined.c
+++ b/security/keys/user_defined.c
@@ -59,7 +59,7 @@
 	/* attach the data */
 	upayload->datalen = datalen;
 	memcpy(upayload->data, data, datalen);
-	rcu_assign_pointer(key->payload.data, upayload);
+	rcu_assign_keypointer(key, upayload);
 	ret = 0;
 
 error:
@@ -98,7 +98,7 @@
 	if (ret == 0) {
 		/* attach the new data, displacing the old */
 		zap = key->payload.data;
-		rcu_assign_pointer(key->payload.data, upayload);
+		rcu_assign_keypointer(key, upayload);
 		key->expiry = 0;
 	}
 
@@ -133,7 +133,7 @@
 	key_payload_reserve(key, 0);
 
 	if (upayload) {
-		rcu_assign_pointer(key->payload.data, NULL);
+		rcu_assign_keypointer(key, NULL);
 		kfree_rcu(upayload, rcu);
 	}
 }
diff --git a/security/lsm_audit.c b/security/lsm_audit.c
index 7bd6f13..293b8c4 100644
--- a/security/lsm_audit.c
+++ b/security/lsm_audit.c
@@ -232,13 +232,14 @@
 	case LSM_AUDIT_DATA_PATH: {
 		struct inode *inode;
 
-		audit_log_d_path(ab, "path=", &a->u.path);
+		audit_log_d_path(ab, " path=", &a->u.path);
 
 		inode = a->u.path.dentry->d_inode;
-		if (inode)
-			audit_log_format(ab, " dev=%s ino=%lu",
-					inode->i_sb->s_id,
-					inode->i_ino);
+		if (inode) {
+			audit_log_format(ab, " dev=");
+			audit_log_untrustedstring(ab, inode->i_sb->s_id);
+			audit_log_format(ab, " ino=%lu", inode->i_ino);
+		}
 		break;
 	}
 	case LSM_AUDIT_DATA_DENTRY: {
@@ -248,10 +249,11 @@
 		audit_log_untrustedstring(ab, a->u.dentry->d_name.name);
 
 		inode = a->u.dentry->d_inode;
-		if (inode)
-			audit_log_format(ab, " dev=%s ino=%lu",
-					inode->i_sb->s_id,
-					inode->i_ino);
+		if (inode) {
+			audit_log_format(ab, " dev=");
+			audit_log_untrustedstring(ab, inode->i_sb->s_id);
+			audit_log_format(ab, " ino=%lu", inode->i_ino);
+		}
 		break;
 	}
 	case LSM_AUDIT_DATA_INODE: {
@@ -266,8 +268,9 @@
 					 dentry->d_name.name);
 			dput(dentry);
 		}
-		audit_log_format(ab, " dev=%s ino=%lu", inode->i_sb->s_id,
-				 inode->i_ino);
+		audit_log_format(ab, " dev=");
+		audit_log_untrustedstring(ab, inode->i_sb->s_id);
+		audit_log_format(ab, " ino=%lu", inode->i_ino);
 		break;
 	}
 	case LSM_AUDIT_DATA_TASK:
@@ -315,7 +318,7 @@
 						.dentry = u->dentry,
 						.mnt = u->mnt
 					};
-					audit_log_d_path(ab, "path=", &path);
+					audit_log_d_path(ab, " path=", &path);
 					break;
 				}
 				if (!u->addr)
diff --git a/security/tomoyo/util.c b/security/tomoyo/util.c
index 4a9b4b2..867558c 100644
--- a/security/tomoyo/util.c
+++ b/security/tomoyo/util.c
@@ -492,13 +492,13 @@
 				if (d < '0' || d > '7' || e < '0' || e > '7')
 					break;
 				c = tomoyo_make_byte(c, d, e);
-				if (tomoyo_invalid(c))
-					continue; /* pattern is not \000 */
+				if (c <= ' ' || c >= 127)
+					continue;
 			}
 			goto out;
 		} else if (in_repetition && c == '/') {
 			goto out;
-		} else if (tomoyo_invalid(c)) {
+		} else if (c <= ' ' || c >= 127) {
 			goto out;
 		}
 	}
diff --git a/sound/atmel/abdac.c b/sound/atmel/abdac.c
index 6fd9391..4fa1dbd 100644
--- a/sound/atmel/abdac.c
+++ b/sound/atmel/abdac.c
@@ -133,7 +133,7 @@
 	period_len = frames_to_bytes(runtime, runtime->period_size);
 
 	cdesc = dw_dma_cyclic_prep(chan, runtime->dma_addr, buffer_len,
-			period_len, DMA_TO_DEVICE);
+			period_len, DMA_MEM_TO_DEV);
 	if (IS_ERR(cdesc)) {
 		dev_dbg(&dac->pdev->dev, "could not prepare cyclic DMA\n");
 		return PTR_ERR(cdesc);
diff --git a/sound/atmel/ac97c.c b/sound/atmel/ac97c.c
index 73516f6..61dade6 100644
--- a/sound/atmel/ac97c.c
+++ b/sound/atmel/ac97c.c
@@ -102,7 +102,7 @@
 
 static int atmel_ac97c_prepare_dma(struct atmel_ac97c *chip,
 		struct snd_pcm_substream *substream,
-		enum dma_data_direction direction)
+		enum dma_transfer_direction direction)
 {
 	struct dma_chan			*chan;
 	struct dw_cyclic_desc		*cdesc;
@@ -118,7 +118,7 @@
 		return -EINVAL;
 	}
 
-	if (direction == DMA_TO_DEVICE)
+	if (direction == DMA_MEM_TO_DEV)
 		chan = chip->dma.tx_chan;
 	else
 		chan = chip->dma.rx_chan;
@@ -133,7 +133,7 @@
 		return PTR_ERR(cdesc);
 	}
 
-	if (direction == DMA_TO_DEVICE) {
+	if (direction == DMA_MEM_TO_DEV) {
 		cdesc->period_callback = atmel_ac97c_dma_playback_period_done;
 		set_bit(DMA_TX_READY, &chip->flags);
 	} else {
@@ -393,7 +393,7 @@
 	if (cpu_is_at32ap7000()) {
 		if (!test_bit(DMA_TX_READY, &chip->flags))
 			retval = atmel_ac97c_prepare_dma(chip, substream,
-					DMA_TO_DEVICE);
+					DMA_MEM_TO_DEV);
 	} else {
 		/* Initialize and start the PDC */
 		writel(runtime->dma_addr, chip->regs + ATMEL_PDC_TPR);
@@ -484,7 +484,7 @@
 	if (cpu_is_at32ap7000()) {
 		if (!test_bit(DMA_RX_READY, &chip->flags))
 			retval = atmel_ac97c_prepare_dma(chip, substream,
-					DMA_FROM_DEVICE);
+					DMA_DEV_TO_MEM);
 	} else {
 		/* Initialize and start the PDC */
 		writel(runtime->dma_addr, chip->regs + ATMEL_PDC_RPR);
diff --git a/sound/core/Kconfig b/sound/core/Kconfig
index ad40938..b413ed0 100644
--- a/sound/core/Kconfig
+++ b/sound/core/Kconfig
@@ -12,6 +12,9 @@
 config SND_RAWMIDI
 	tristate
 
+config SND_COMPRESS_OFFLOAD
+	tristate
+
 # To be effective this also requires INPUT - users should say:
 #    select SND_JACK if INPUT=y || INPUT=SND
 # to avoid having to force INPUT on.
@@ -154,16 +157,6 @@
 
 	  If you are unsure about this, say N here.
 
-config SND_COMPRESS_OFFLOAD
-	tristate "ALSA Compressed audio offload support"
-	default n
-	help
-	  If you want support for offloading compressed audio and have such
-	  a hardware, then you should say Y here and also to the DSP driver
-	  of your platform.
-
-	  If you are unsure about this, say N here.
-
 config SND_SUPPORT_OLD_API
 	bool "Support old ALSA API"
 	default y
diff --git a/sound/pci/au88x0/au88x0.c b/sound/pci/au88x0/au88x0.c
index 762bb10..f13ad53 100644
--- a/sound/pci/au88x0/au88x0.c
+++ b/sound/pci/au88x0/au88x0.c
@@ -268,8 +268,14 @@
 		card->shortname, chip->io, chip->irq);
 
 	// (4) Alloc components.
+	err = snd_vortex_mixer(chip);
+	if (err < 0) {
+		snd_card_free(card);
+		return err;
+	}
 	// ADB pcm.
-	if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_ADB, NR_ADB)) < 0) {
+	err = snd_vortex_new_pcm(chip, VORTEX_PCM_ADB, NR_PCM);
+	if (err < 0) {
 		snd_card_free(card);
 		return err;
 	}
@@ -299,11 +305,6 @@
 		return err;
 	}
 #endif
-	// snd_ac97_mixer and Vortex mixer.
-	if ((err = snd_vortex_mixer(chip)) < 0) {
-		snd_card_free(card);
-		return err;
-	}
 	if ((err = snd_vortex_midi(chip)) < 0) {
 		snd_card_free(card);
 		return err;
diff --git a/sound/pci/au88x0/au88x0.h b/sound/pci/au88x0/au88x0.h
index 02f6e08..bb93815 100644
--- a/sound/pci/au88x0/au88x0.h
+++ b/sound/pci/au88x0/au88x0.h
@@ -105,6 +105,7 @@
 #define MIX_SPDIF(x) (vortex->mixspdif[x])
 
 #define NR_WTPB 0x20		/* WT channels per each bank. */
+#define NR_PCM	0x10
 
 /* Structs */
 typedef struct {
diff --git a/sound/pci/au88x0/au88x0_pcm.c b/sound/pci/au88x0/au88x0_pcm.c
index 0488633..0ef2f97 100644
--- a/sound/pci/au88x0/au88x0_pcm.c
+++ b/sound/pci/au88x0/au88x0_pcm.c
@@ -168,6 +168,7 @@
 			runtime->hw = snd_vortex_playback_hw_adb;
 #ifdef CHIP_AU8830
 		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
+			VORTEX_IS_QUAD(vortex) &&
 			VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_ADB) {
 			runtime->hw.channels_max = 4;
 			snd_pcm_hw_constraint_list(runtime, 0,
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 0852e20..fb35474 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -2498,6 +2498,7 @@
 	SND_PCI_QUIRK(0x1043, 0x81b3, "ASUS", POS_FIX_LPIB),
 	SND_PCI_QUIRK(0x1043, 0x81e7, "ASUS M2V", POS_FIX_LPIB),
 	SND_PCI_QUIRK(0x104d, 0x9069, "Sony VPCS11V9E", POS_FIX_LPIB),
+	SND_PCI_QUIRK(0x10de, 0xcb89, "Macbook Pro 7,1", POS_FIX_LPIB),
 	SND_PCI_QUIRK(0x1297, 0x3166, "Shuttle", POS_FIX_LPIB),
 	SND_PCI_QUIRK(0x1458, 0xa022, "ga-ma770-ud3", POS_FIX_LPIB),
 	SND_PCI_QUIRK(0x1462, 0x1002, "MSI Wind U115", POS_FIX_LPIB),
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index 87e684f..3556408 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -1596,7 +1596,7 @@
 	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x02bd,
 				"Dell Studio 1557", STAC_DELL_M6_DMIC),
 	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x02fe,
-				"Dell Studio XPS 1645", STAC_DELL_M6_BOTH),
+				"Dell Studio XPS 1645", STAC_DELL_M6_DMIC),
 	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x0413,
 				"Dell Studio 1558", STAC_DELL_M6_DMIC),
 	{} /* terminator */
diff --git a/sound/pci/oxygen/xonar_wm87x6.c b/sound/pci/oxygen/xonar_wm87x6.c
index 478303e..63cff90 100644
--- a/sound/pci/oxygen/xonar_wm87x6.c
+++ b/sound/pci/oxygen/xonar_wm87x6.c
@@ -177,6 +177,7 @@
 	struct xonar_wm87x6 *data = chip->model_data;
 
 	wm8776_write(chip, WM8776_RESET, 0);
+	wm8776_write(chip, WM8776_PHASESWAP, WM8776_PH_MASK);
 	wm8776_write(chip, WM8776_DACCTRL1, WM8776_DZCEN |
 		     WM8776_PL_LEFT_LEFT | WM8776_PL_RIGHT_RIGHT);
 	wm8776_write(chip, WM8776_DACMUTE, chip->dac_mute ? WM8776_DMUTE : 0);
diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c
index d7bd918..f8863eb 100644
--- a/sound/soc/codecs/sgtl5000.c
+++ b/sound/soc/codecs/sgtl5000.c
@@ -1457,5 +1457,5 @@
 module_exit(sgtl5000_exit);
 
 MODULE_DESCRIPTION("Freescale SGTL5000 ALSA SoC Codec Driver");
-MODULE_AUTHOR("Zeng Zhaoming <zhaoming.zeng@freescale.com>");
+MODULE_AUTHOR("Zeng Zhaoming <zengzm.kernel@gmail.com>");
 MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/wm8993.c b/sound/soc/codecs/wm8993.c
index 2b40c93..7c7fd92 100644
--- a/sound/soc/codecs/wm8993.c
+++ b/sound/soc/codecs/wm8993.c
@@ -444,6 +444,12 @@
 	/* Enable the FLL */
 	snd_soc_write(codec, WM8993_FLL_CONTROL_1, reg1 | WM8993_FLL_ENA);
 
+	/* Both overestimates */
+	if (Fref < 1000000)
+		msleep(3);
+	else
+		msleep(1);
+
 	dev_dbg(codec->dev, "FLL enabled at %dHz->%dHz\n", Fref, Fout);
 
 	wm8993->fll_fref = Fref;
diff --git a/sound/soc/ep93xx/ep93xx-pcm.c b/sound/soc/ep93xx/ep93xx-pcm.c
index 3fc9613..de83904 100644
--- a/sound/soc/ep93xx/ep93xx-pcm.c
+++ b/sound/soc/ep93xx/ep93xx-pcm.c
@@ -113,9 +113,9 @@
 	rtd->dma_data.name = dma_params->name;
 
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
-		rtd->dma_data.direction = DMA_TO_DEVICE;
+		rtd->dma_data.direction = DMA_MEM_TO_DEV;
 	else
-		rtd->dma_data.direction = DMA_FROM_DEVICE;
+		rtd->dma_data.direction = DMA_DEV_TO_MEM;
 
 	rtd->dma_chan = dma_request_channel(mask, ep93xx_pcm_dma_filter,
 					    &rtd->dma_data);
diff --git a/sound/soc/imx/imx-pcm-dma-mx2.c b/sound/soc/imx/imx-pcm-dma-mx2.c
index 1cf2fe8..5780c9b 100644
--- a/sound/soc/imx/imx-pcm-dma-mx2.c
+++ b/sound/soc/imx/imx-pcm-dma-mx2.c
@@ -88,11 +88,13 @@
 	iprtd->dma_data.dma_request = dma_params->dma;
 
 	/* Try to grab a DMA channel */
-	dma_cap_zero(mask);
-	dma_cap_set(DMA_SLAVE, mask);
-	iprtd->dma_chan = dma_request_channel(mask, filter, iprtd);
-	if (!iprtd->dma_chan)
-		return -EINVAL;
+	if (!iprtd->dma_chan) {
+		dma_cap_zero(mask);
+		dma_cap_set(DMA_SLAVE, mask);
+		iprtd->dma_chan = dma_request_channel(mask, filter, iprtd);
+		if (!iprtd->dma_chan)
+			return -EINVAL;
+	}
 
 	switch (params_format(params)) {
 	case SNDRV_PCM_FORMAT_S16_LE:
@@ -107,12 +109,12 @@
 	}
 
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		slave_config.direction = DMA_TO_DEVICE;
+		slave_config.direction = DMA_MEM_TO_DEV;
 		slave_config.dst_addr = dma_params->dma_addr;
 		slave_config.dst_addr_width = buswidth;
 		slave_config.dst_maxburst = dma_params->burstsize;
 	} else {
-		slave_config.direction = DMA_FROM_DEVICE;
+		slave_config.direction = DMA_DEV_TO_MEM;
 		slave_config.src_addr = dma_params->dma_addr;
 		slave_config.src_addr_width = buswidth;
 		slave_config.src_maxburst = dma_params->burstsize;
@@ -159,7 +161,7 @@
 			iprtd->period_bytes * iprtd->periods,
 			iprtd->period_bytes,
 			substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
-			DMA_TO_DEVICE : DMA_FROM_DEVICE);
+			DMA_MEM_TO_DEV : DMA_DEV_TO_MEM);
 	if (!iprtd->desc) {
 		dev_err(&chan->dev->device, "cannot prepare slave dma\n");
 		return -EINVAL;
diff --git a/sound/soc/mxs/mxs-pcm.c b/sound/soc/mxs/mxs-pcm.c
index 0e12f4e..105f42a 100644
--- a/sound/soc/mxs/mxs-pcm.c
+++ b/sound/soc/mxs/mxs-pcm.c
@@ -136,7 +136,7 @@
 			iprtd->period_bytes * iprtd->periods,
 			iprtd->period_bytes,
 			substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
-			DMA_TO_DEVICE : DMA_FROM_DEVICE);
+			DMA_MEM_TO_DEV : DMA_DEV_TO_MEM);
 	if (!iprtd->desc) {
 		dev_err(&chan->dev->device, "cannot prepare slave dma\n");
 		return -EINVAL;
diff --git a/sound/soc/nuc900/nuc900-ac97.c b/sound/soc/nuc900/nuc900-ac97.c
index 45d11dd..946020a 100644
--- a/sound/soc/nuc900/nuc900-ac97.c
+++ b/sound/soc/nuc900/nuc900-ac97.c
@@ -366,7 +366,7 @@
 		goto out3;
 
 	/* enbale ac97 multifunction pin */
-	mfp_set_groupg(nuc900_audio->dev, "nuc900-audio");
+	mfp_set_groupg(nuc900_audio->dev, NULL);
 
 	return 0;
 
diff --git a/sound/soc/samsung/dma.c b/sound/soc/samsung/dma.c
index 427ae0d..e4ba17c 100644
--- a/sound/soc/samsung/dma.c
+++ b/sound/soc/samsung/dma.c
@@ -86,7 +86,7 @@
 	dma_info.cap = (samsung_dma_has_circular() ? DMA_CYCLIC : DMA_SLAVE);
 	dma_info.direction =
 		(substream->stream == SNDRV_PCM_STREAM_PLAYBACK
-		? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+		? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM);
 	dma_info.fp = audio_buffdone;
 	dma_info.fp_param = substream;
 	dma_info.period = prtd->dma_period;
@@ -171,7 +171,7 @@
 		dma_info.client = prtd->params->client;
 		dma_info.direction =
 			(substream->stream == SNDRV_PCM_STREAM_PLAYBACK
-			? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+			? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM);
 		dma_info.width = prtd->params->dma_size;
 		dma_info.fifo = prtd->params->dma_addr;
 		prtd->params->ch = prtd->params->ops->request(
diff --git a/sound/soc/sh/siu_pcm.c b/sound/soc/sh/siu_pcm.c
index f8f6816..0193e59 100644
--- a/sound/soc/sh/siu_pcm.c
+++ b/sound/soc/sh/siu_pcm.c
@@ -131,7 +131,7 @@
 	sg_dma_address(&sg) = buff;
 
 	desc = siu_stream->chan->device->device_prep_slave_sg(siu_stream->chan,
-		&sg, 1, DMA_TO_DEVICE, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+		&sg, 1, DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 	if (!desc) {
 		dev_err(dev, "Failed to allocate a dma descriptor\n");
 		return -ENOMEM;
@@ -181,7 +181,7 @@
 	sg_dma_address(&sg) = buff;
 
 	desc = siu_stream->chan->device->device_prep_slave_sg(siu_stream->chan,
-		&sg, 1, DMA_FROM_DEVICE, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+		&sg, 1, DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 	if (!desc) {
 		dev_err(dev, "Failed to allocate dma descriptor\n");
 		return -ENOMEM;
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 3986520..b5ecf6d 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -907,6 +907,10 @@
 			if (err < 0)
 				printk(KERN_ERR "asoc: failed to remove %s\n", platform->name);
 		}
+
+		/* Make sure all DAPM widgets are freed */
+		snd_soc_dapm_free(&platform->dapm);
+
 		platform->probed = 0;
 		list_del(&platform->card_list);
 		module_put(platform->dev->driver->owner);
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 3ad1f59..1f55ded 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -1426,7 +1426,7 @@
 			dapm->target_bias_level = SND_SOC_BIAS_ON;
 			break;
 		case SND_SOC_DAPM_STREAM_STOP:
-			if (dapm->codec->active)
+			if (dapm->codec && dapm->codec->active)
 				dapm->target_bias_level = SND_SOC_BIAS_ON;
 			else
 				dapm->target_bias_level = SND_SOC_BIAS_STANDBY;
diff --git a/sound/soc/txx9/txx9aclc.c b/sound/soc/txx9/txx9aclc.c
index 93931de..2155461 100644
--- a/sound/soc/txx9/txx9aclc.c
+++ b/sound/soc/txx9/txx9aclc.c
@@ -134,7 +134,7 @@
 	sg_dma_address(&sg) = buf_dma_addr;
 	desc = chan->device->device_prep_slave_sg(chan, &sg, 1,
 		dmadata->substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
-		DMA_TO_DEVICE : DMA_FROM_DEVICE,
+		DMA_MEM_TO_DEV : DMA_DEV_TO_MEM,
 		DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 	if (!desc) {
 		dev_err(&chan->dev->device, "cannot prepare slave dma\n");
diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index 3c6f780..310d3dd 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -811,6 +811,8 @@
 	case 0x2C:	/* Westmere EP - Gulftown */
 	case 0x2A:	/* SNB */
 	case 0x2D:	/* SNB Xeon */
+	case 0x3A:	/* IVB */
+	case 0x3D:	/* IVB Xeon */
 		return 1;
 	case 0x2E:	/* Nehalem-EX Xeon - Beckton */
 	case 0x2F:	/* Westmere-EX Xeon - Eagleton */
diff --git a/tools/testing/ktest/compare-ktest-sample.pl b/tools/testing/ktest/compare-ktest-sample.pl
index 9a571e7..a373a5b 100755
--- a/tools/testing/ktest/compare-ktest-sample.pl
+++ b/tools/testing/ktest/compare-ktest-sample.pl
@@ -2,7 +2,9 @@
 
 open (IN,"ktest.pl");
 while (<IN>) {
+    # hashes are now used
     if (/\$opt\{"?([A-Z].*?)(\[.*\])?"?\}/ ||
+	/^\s*"?([A-Z].*?)"?\s*=>\s*/ ||
 	/set_test_option\("(.*?)"/) {
 	$opt{$1} = 1;
     }
@@ -11,7 +13,7 @@
 
 open (IN, "sample.conf");
 while (<IN>) {
-    if (/^\s*#?\s*(\S+)\s*=/) {
+    if (/^\s*#?\s*([A-Z]\S*)\s*=/) {
 	$samp{$1} = 1;
     }
 }
diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl
index 8b4c253..62a134d 100755
--- a/tools/testing/ktest/ktest.pl
+++ b/tools/testing/ktest/ktest.pl
@@ -18,40 +18,50 @@
 my %opt;
 my %repeat_tests;
 my %repeats;
-my %default;
 
 #default opts
-$default{"NUM_TESTS"}		= 1;
-$default{"REBOOT_TYPE"}		= "grub";
-$default{"TEST_TYPE"}		= "test";
-$default{"BUILD_TYPE"}		= "randconfig";
-$default{"MAKE_CMD"}		= "make";
-$default{"TIMEOUT"}		= 120;
-$default{"TMP_DIR"}		= "/tmp/ktest/\${MACHINE}";
-$default{"SLEEP_TIME"}		= 60;	# sleep time between tests
-$default{"BUILD_NOCLEAN"}	= 0;
-$default{"REBOOT_ON_ERROR"}	= 0;
-$default{"POWEROFF_ON_ERROR"}	= 0;
-$default{"REBOOT_ON_SUCCESS"}	= 1;
-$default{"POWEROFF_ON_SUCCESS"}	= 0;
-$default{"BUILD_OPTIONS"}	= "";
-$default{"BISECT_SLEEP_TIME"}	= 60;   # sleep time between bisects
-$default{"PATCHCHECK_SLEEP_TIME"} = 60; # sleep time between patch checks
-$default{"CLEAR_LOG"}		= 0;
-$default{"BISECT_MANUAL"}	= 0;
-$default{"BISECT_SKIP"}		= 1;
-$default{"SUCCESS_LINE"}	= "login:";
-$default{"DETECT_TRIPLE_FAULT"} = 1;
-$default{"NO_INSTALL"}		= 0;
-$default{"BOOTED_TIMEOUT"}	= 1;
-$default{"DIE_ON_FAILURE"}	= 1;
-$default{"SSH_EXEC"}		= "ssh \$SSH_USER\@\$MACHINE \$SSH_COMMAND";
-$default{"SCP_TO_TARGET"}	= "scp \$SRC_FILE \$SSH_USER\@\$MACHINE:\$DST_FILE";
-$default{"REBOOT"}		= "ssh \$SSH_USER\@\$MACHINE reboot";
-$default{"STOP_AFTER_SUCCESS"}	= 10;
-$default{"STOP_AFTER_FAILURE"}	= 60;
-$default{"STOP_TEST_AFTER"}	= 600;
-$default{"LOCALVERSION"}	= "-test";
+my %default = (
+    "NUM_TESTS"			=> 1,
+    "TEST_TYPE"			=> "build",
+    "BUILD_TYPE"		=> "randconfig",
+    "MAKE_CMD"			=> "make",
+    "TIMEOUT"			=> 120,
+    "TMP_DIR"			=> "/tmp/ktest/\${MACHINE}",
+    "SLEEP_TIME"		=> 60,	# sleep time between tests
+    "BUILD_NOCLEAN"		=> 0,
+    "REBOOT_ON_ERROR"		=> 0,
+    "POWEROFF_ON_ERROR"		=> 0,
+    "REBOOT_ON_SUCCESS"		=> 1,
+    "POWEROFF_ON_SUCCESS"	=> 0,
+    "BUILD_OPTIONS"		=> "",
+    "BISECT_SLEEP_TIME"		=> 60,   # sleep time between bisects
+    "PATCHCHECK_SLEEP_TIME"	=> 60, # sleep time between patch checks
+    "CLEAR_LOG"			=> 0,
+    "BISECT_MANUAL"		=> 0,
+    "BISECT_SKIP"		=> 1,
+    "SUCCESS_LINE"		=> "login:",
+    "DETECT_TRIPLE_FAULT"	=> 1,
+    "NO_INSTALL"		=> 0,
+    "BOOTED_TIMEOUT"		=> 1,
+    "DIE_ON_FAILURE"		=> 1,
+    "SSH_EXEC"			=> "ssh \$SSH_USER\@\$MACHINE \$SSH_COMMAND",
+    "SCP_TO_TARGET"		=> "scp \$SRC_FILE \$SSH_USER\@\$MACHINE:\$DST_FILE",
+    "REBOOT"			=> "ssh \$SSH_USER\@\$MACHINE reboot",
+    "STOP_AFTER_SUCCESS"	=> 10,
+    "STOP_AFTER_FAILURE"	=> 60,
+    "STOP_TEST_AFTER"		=> 600,
+
+# required, and we will ask users if they don't have them but we keep the default
+# value something that is common.
+    "REBOOT_TYPE"		=> "grub",
+    "LOCALVERSION"		=> "-test",
+    "SSH_USER"			=> "root",
+    "BUILD_TARGET"	 	=> "arch/x86/boot/bzImage",
+    "TARGET_IMAGE"		=> "/boot/vmlinuz-test",
+
+    "LOG_FILE"			=> undef,
+    "IGNORE_UNUSED"		=> 0,
+);
 
 my $ktest_config;
 my $version;
@@ -73,6 +83,8 @@
 my $power_cycle;
 my $reboot;
 my $reboot_on_error;
+my $switch_to_good;
+my $switch_to_test;
 my $poweroff_on_error;
 my $die_on_failure;
 my $powercycle_after_reboot;
@@ -92,17 +104,24 @@
 my $start_minconfig_defined;
 my $output_minconfig;
 my $ignore_config;
+my $ignore_errors;
 my $addconfig;
 my $in_bisect = 0;
-my $bisect_bad = "";
+my $bisect_bad_commit = "";
 my $reverse_bisect;
 my $bisect_manual;
 my $bisect_skip;
 my $config_bisect_good;
+my $bisect_ret_good;
+my $bisect_ret_bad;
+my $bisect_ret_skip;
+my $bisect_ret_abort;
+my $bisect_ret_default;
 my $in_patchcheck = 0;
 my $run_test;
 my $redirect;
 my $buildlog;
+my $testlog;
 my $dmesg;
 my $monitor_fp;
 my $monitor_pid;
@@ -112,6 +131,7 @@
 my $patchcheck_sleep_time;
 my $ignore_warnings;
 my $store_failures;
+my $store_successes;
 my $test_name;
 my $timeout;
 my $booted_timeout;
@@ -124,10 +144,34 @@
 my $stop_test_after;
 my $build_target;
 my $target_image;
+my $checkout;
 my $localversion;
 my $iteration = 0;
 my $successes = 0;
 
+my $bisect_good;
+my $bisect_bad;
+my $bisect_type;
+my $bisect_start;
+my $bisect_replay;
+my $bisect_files;
+my $bisect_reverse;
+my $bisect_check;
+
+my $config_bisect;
+my $config_bisect_type;
+
+my $patchcheck_type;
+my $patchcheck_start;
+my $patchcheck_end;
+
+# set when a test is something other that just building or install
+# which would require more options.
+my $buildonly = 1;
+
+# set when creating a new config
+my $newconfig = 0;
+
 my %entered_configs;
 my %config_help;
 my %variable;
@@ -136,11 +180,99 @@
 # do not force reboots on config problems
 my $no_reboot = 1;
 
+my %option_map = (
+    "MACHINE"			=> \$machine,
+    "SSH_USER"			=> \$ssh_user,
+    "TMP_DIR"			=> \$tmpdir,
+    "OUTPUT_DIR"		=> \$outputdir,
+    "BUILD_DIR"			=> \$builddir,
+    "TEST_TYPE"			=> \$test_type,
+    "BUILD_TYPE"		=> \$build_type,
+    "BUILD_OPTIONS"		=> \$build_options,
+    "PRE_BUILD"			=> \$pre_build,
+    "POST_BUILD"		=> \$post_build,
+    "PRE_BUILD_DIE"		=> \$pre_build_die,
+    "POST_BUILD_DIE"		=> \$post_build_die,
+    "POWER_CYCLE"		=> \$power_cycle,
+    "REBOOT"			=> \$reboot,
+    "BUILD_NOCLEAN"		=> \$noclean,
+    "MIN_CONFIG"		=> \$minconfig,
+    "OUTPUT_MIN_CONFIG"		=> \$output_minconfig,
+    "START_MIN_CONFIG"		=> \$start_minconfig,
+    "IGNORE_CONFIG"		=> \$ignore_config,
+    "TEST"			=> \$run_test,
+    "ADD_CONFIG"		=> \$addconfig,
+    "REBOOT_TYPE"		=> \$reboot_type,
+    "GRUB_MENU"			=> \$grub_menu,
+    "POST_INSTALL"		=> \$post_install,
+    "NO_INSTALL"		=> \$no_install,
+    "REBOOT_SCRIPT"		=> \$reboot_script,
+    "REBOOT_ON_ERROR"		=> \$reboot_on_error,
+    "SWITCH_TO_GOOD"		=> \$switch_to_good,
+    "SWITCH_TO_TEST"		=> \$switch_to_test,
+    "POWEROFF_ON_ERROR"		=> \$poweroff_on_error,
+    "DIE_ON_FAILURE"		=> \$die_on_failure,
+    "POWER_OFF"			=> \$power_off,
+    "POWERCYCLE_AFTER_REBOOT"	=> \$powercycle_after_reboot,
+    "POWEROFF_AFTER_HALT"	=> \$poweroff_after_halt,
+    "SLEEP_TIME"		=> \$sleep_time,
+    "BISECT_SLEEP_TIME"		=> \$bisect_sleep_time,
+    "PATCHCHECK_SLEEP_TIME"	=> \$patchcheck_sleep_time,
+    "IGNORE_WARNINGS"		=> \$ignore_warnings,
+    "IGNORE_ERRORS"		=> \$ignore_errors,
+    "BISECT_MANUAL"		=> \$bisect_manual,
+    "BISECT_SKIP"		=> \$bisect_skip,
+    "CONFIG_BISECT_GOOD"	=> \$config_bisect_good,
+    "BISECT_RET_GOOD"		=> \$bisect_ret_good,
+    "BISECT_RET_BAD"		=> \$bisect_ret_bad,
+    "BISECT_RET_SKIP"		=> \$bisect_ret_skip,
+    "BISECT_RET_ABORT"		=> \$bisect_ret_abort,
+    "BISECT_RET_DEFAULT"	=> \$bisect_ret_default,
+    "STORE_FAILURES"		=> \$store_failures,
+    "STORE_SUCCESSES"		=> \$store_successes,
+    "TEST_NAME"			=> \$test_name,
+    "TIMEOUT"			=> \$timeout,
+    "BOOTED_TIMEOUT"		=> \$booted_timeout,
+    "CONSOLE"			=> \$console,
+    "DETECT_TRIPLE_FAULT"	=> \$detect_triplefault,
+    "SUCCESS_LINE"		=> \$success_line,
+    "REBOOT_SUCCESS_LINE"	=> \$reboot_success_line,
+    "STOP_AFTER_SUCCESS"	=> \$stop_after_success,
+    "STOP_AFTER_FAILURE"	=> \$stop_after_failure,
+    "STOP_TEST_AFTER"		=> \$stop_test_after,
+    "BUILD_TARGET"		=> \$build_target,
+    "SSH_EXEC"			=> \$ssh_exec,
+    "SCP_TO_TARGET"		=> \$scp_to_target,
+    "CHECKOUT"			=> \$checkout,
+    "TARGET_IMAGE"		=> \$target_image,
+    "LOCALVERSION"		=> \$localversion,
+
+    "BISECT_GOOD"		=> \$bisect_good,
+    "BISECT_BAD"		=> \$bisect_bad,
+    "BISECT_TYPE"		=> \$bisect_type,
+    "BISECT_START"		=> \$bisect_start,
+    "BISECT_REPLAY"		=> \$bisect_replay,
+    "BISECT_FILES"		=> \$bisect_files,
+    "BISECT_REVERSE"		=> \$bisect_reverse,
+    "BISECT_CHECK"		=> \$bisect_check,
+
+    "CONFIG_BISECT"		=> \$config_bisect,
+    "CONFIG_BISECT_TYPE"	=> \$config_bisect_type,
+
+    "PATCHCHECK_TYPE"		=> \$patchcheck_type,
+    "PATCHCHECK_START"		=> \$patchcheck_start,
+    "PATCHCHECK_END"		=> \$patchcheck_end,
+);
+
+# Options may be used by other options, record them.
+my %used_options;
+
 # default variables that can be used
 chomp ($variable{"PWD"} = `pwd`);
 
 $config_help{"MACHINE"} = << "EOF"
  The machine hostname that you will test.
+ For build only tests, it is still needed to differentiate log files.
 EOF
     ;
 $config_help{"SSH_USER"} = << "EOF"
@@ -150,11 +282,15 @@
     ;
 $config_help{"BUILD_DIR"} = << "EOF"
  The directory that contains the Linux source code (full path).
+ You can use \${PWD} that will be the path where ktest.pl is run, or use
+ \${THIS_DIR} which is assigned \${PWD} but may be changed later.
 EOF
     ;
 $config_help{"OUTPUT_DIR"} = << "EOF"
  The directory that the objects will be built (full path).
  (can not be same as BUILD_DIR)
+ You can use \${PWD} that will be the path where ktest.pl is run, or use
+ \${THIS_DIR} which is assigned \${PWD} but may be changed later.
 EOF
     ;
 $config_help{"BUILD_TARGET"} = << "EOF"
@@ -162,6 +298,11 @@
  (relative to OUTPUT_DIR)
 EOF
     ;
+$config_help{"BUILD_OPTIONS"} = << "EOF"
+ Options to add to \"make\" when building.
+ i.e.  -j20
+EOF
+    ;
 $config_help{"TARGET_IMAGE"} = << "EOF"
  The place to put your image on the test machine.
 EOF
@@ -227,20 +368,36 @@
 EOF
     ;
 
-sub read_yn {
-    my ($prompt) = @_;
+sub read_prompt {
+    my ($cancel, $prompt) = @_;
 
     my $ans;
 
     for (;;) {
-	print "$prompt [Y/n] ";
+	if ($cancel) {
+	    print "$prompt [y/n/C] ";
+	} else {
+	    print "$prompt [Y/n] ";
+	}
 	$ans = <STDIN>;
 	chomp $ans;
 	if ($ans =~ /^\s*$/) {
-	    $ans = "y";
+	    if ($cancel) {
+		$ans = "c";
+	    } else {
+		$ans = "y";
+	    }
 	}
 	last if ($ans =~ /^y$/i || $ans =~ /^n$/i);
-	print "Please answer either 'y' or 'n'.\n";
+	if ($cancel) {
+	    last if ($ans =~ /^c$/i);
+	    print "Please answer either 'y', 'n' or 'c'.\n";
+	} else {
+	    print "Please answer either 'y' or 'n'.\n";
+	}
+    }
+    if ($ans =~ /^c/i) {
+	exit;
     }
     if ($ans !~ /^y$/i) {
 	return 0;
@@ -248,6 +405,18 @@
     return 1;
 }
 
+sub read_yn {
+    my ($prompt) = @_;
+
+    return read_prompt 0, $prompt;
+}
+
+sub read_ync {
+    my ($prompt) = @_;
+
+    return read_prompt 1, $prompt;
+}
+
 sub get_ktest_config {
     my ($config) = @_;
     my $ans;
@@ -261,7 +430,7 @@
 
     for (;;) {
 	print "$config = ";
-	if (defined($default{$config})) {
+	if (defined($default{$config}) && length($default{$config})) {
 	    print "\[$default{$config}\] ";
 	}
 	$ans = <STDIN>;
@@ -274,22 +443,37 @@
 		next;
 	    }
 	}
-	$entered_configs{$config} = process_variables($ans);
+	$entered_configs{$config} = ${ans};
 	last;
     }
 }
 
 sub get_ktest_configs {
     get_ktest_config("MACHINE");
-    get_ktest_config("SSH_USER");
     get_ktest_config("BUILD_DIR");
     get_ktest_config("OUTPUT_DIR");
-    get_ktest_config("BUILD_TARGET");
-    get_ktest_config("TARGET_IMAGE");
-    get_ktest_config("POWER_CYCLE");
-    get_ktest_config("CONSOLE");
+
+    if ($newconfig) {
+	get_ktest_config("BUILD_OPTIONS");
+    }
+
+    # options required for other than just building a kernel
+    if (!$buildonly) {
+	get_ktest_config("POWER_CYCLE");
+	get_ktest_config("CONSOLE");
+    }
+
+    # options required for install and more
+    if ($buildonly != 1) {
+	get_ktest_config("SSH_USER");
+	get_ktest_config("BUILD_TARGET");
+	get_ktest_config("TARGET_IMAGE");
+    }
+
     get_ktest_config("LOCALVERSION");
 
+    return if ($buildonly);
+
     my $rtype = $opt{"REBOOT_TYPE"};
 
     if (!defined($rtype)) {
@@ -303,8 +487,6 @@
 
     if ($rtype eq "grub") {
 	get_ktest_config("GRUB_MENU");
-    } else {
-	get_ktest_config("REBOOT_SCRIPT");
     }
 }
 
@@ -334,6 +516,10 @@
 	} else {
 	    # put back the origin piece.
 	    $retval = "$retval\$\{$var\}";
+	    # This could be an option that is used later, save
+	    # it so we don't warn if this option is not one of
+	    # ktests options.
+	    $used_options{$var} = 1;
 	}
 	$value = $end;
     }
@@ -348,6 +534,19 @@
 sub set_value {
     my ($lvalue, $rvalue, $override, $overrides, $name) = @_;
 
+    my $prvalue = process_variables($rvalue);
+
+    if ($buildonly && $lvalue =~ /^TEST_TYPE(\[.*\])?$/ && $prvalue ne "build") {
+	# Note if a test is something other than build, then we
+	# will need other manditory options.
+	if ($prvalue ne "install") {
+	    $buildonly = 0;
+	} else {
+	    # install still limits some manditory options.
+	    $buildonly = 2;
+	}
+    }
+
     if (defined($opt{$lvalue})) {
 	if (!$override || defined(${$overrides}{$lvalue})) {
 	    my $extra = "";
@@ -356,13 +555,12 @@
 	    }
 	    die "$name: $.: Option $lvalue defined more than once!\n$extra";
 	}
-	${$overrides}{$lvalue} = $rvalue;
+	${$overrides}{$lvalue} = $prvalue;
     }
     if ($rvalue =~ /^\s*$/) {
 	delete $opt{$lvalue};
     } else {
-	$rvalue = process_variables($rvalue);
-	$opt{$lvalue} = $rvalue;
+	$opt{$lvalue} = $prvalue;
     }
 }
 
@@ -712,6 +910,15 @@
     return $test_case;
 }
 
+sub get_test_case {
+	print "What test case would you like to run?\n";
+	print " (build, install or boot)\n";
+	print " Other tests are available but require editing the config file\n";
+	my $ans = <STDIN>;
+	chomp $ans;
+	$default{"TEST_TYPE"} = $ans;
+}
+
 sub read_config {
     my ($config) = @_;
 
@@ -726,10 +933,7 @@
     # was a test specified?
     if (!$test_case) {
 	print "No test case specified.\n";
-	print "What test case would you like to run?\n";
-	my $ans = <STDIN>;
-	chomp $ans;
-	$default{"TEST_TYPE"} = $ans;
+	get_test_case;
     }
 
     # set any defaults
@@ -739,6 +943,37 @@
 	    $opt{$default} = $default{$default};
 	}
     }
+
+    if ($opt{"IGNORE_UNUSED"} == 1) {
+	return;
+    }
+
+    my %not_used;
+
+    # check if there are any stragglers (typos?)
+    foreach my $option (keys %opt) {
+	my $op = $option;
+	# remove per test labels.
+	$op =~ s/\[.*\]//;
+	if (!exists($option_map{$op}) &&
+	    !exists($default{$op}) &&
+	    !exists($used_options{$op})) {
+	    $not_used{$op} = 1;
+	}
+    }
+
+    if (%not_used) {
+	my $s = "s are";
+	$s = " is" if (keys %not_used == 1);
+	print "The following option$s not used; could be a typo:\n";
+	foreach my $option (keys %not_used) {
+	    print "$option\n";
+	}
+	print "Set IGRNORE_UNUSED = 1 to have ktest ignore unused variables\n";
+	if (!read_yn "Do you want to continue?") {
+	    exit -1;
+	}
+    }
 }
 
 sub __eval_option {
@@ -873,6 +1108,17 @@
     }
 }
 
+sub reboot_to_good {
+    my ($time) = @_;
+
+    if (defined($switch_to_good)) {
+	run_command $switch_to_good;
+	return;
+    }
+
+    reboot $time;
+}
+
 sub do_not_reboot {
     my $i = $iteration;
 
@@ -889,7 +1135,7 @@
     if ($reboot_on_error && !do_not_reboot) {
 
 	doprint "REBOOTING\n";
-	reboot;
+	reboot_to_good;
 
     } elsif ($poweroff_on_error && defined($power_off)) {
 	doprint "POWERING OFF\n";
@@ -975,6 +1221,43 @@
     print "** Monitor flushed **\n";
 }
 
+sub save_logs {
+	my ($result, $basedir) = @_;
+	my @t = localtime;
+	my $date = sprintf "%04d%02d%02d%02d%02d%02d",
+		1900+$t[5],$t[4],$t[3],$t[2],$t[1],$t[0];
+
+	my $type = $build_type;
+	if ($type =~ /useconfig/) {
+	    $type = "useconfig";
+	}
+
+	my $dir = "$machine-$test_type-$type-$result-$date";
+
+	$dir = "$basedir/$dir";
+
+	if (!-d $dir) {
+	    mkpath($dir) or
+		die "can't create $dir";
+	}
+
+	my %files = (
+		"config" => $output_config,
+		"buildlog" => $buildlog,
+		"dmesg" => $dmesg,
+		"testlog" => $testlog,
+	);
+
+	while (my ($name, $source) = each(%files)) {
+		if (-f "$source") {
+			cp "$source", "$dir/$name" or
+				die "failed to copy $source";
+		}
+	}
+
+	doprint "*** Saved info to $dir ***\n";
+}
+
 sub fail {
 
 	if ($die_on_failure) {
@@ -988,7 +1271,7 @@
 	# no need to reboot for just building.
 	if (!do_not_reboot) {
 	    doprint "REBOOTING\n";
-	    reboot $sleep_time;
+	    reboot_to_good $sleep_time;
 	}
 
 	my $name = "";
@@ -1003,38 +1286,9 @@
 	doprint "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n";
 	doprint "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n";
 
-	return 1 if (!defined($store_failures));
-
-	my @t = localtime;
-	my $date = sprintf "%04d%02d%02d%02d%02d%02d",
-		1900+$t[5],$t[4],$t[3],$t[2],$t[1],$t[0];
-
-	my $type = $build_type;
-	if ($type =~ /useconfig/) {
-	    $type = "useconfig";
-	}
-
-	my $dir = "$machine-$test_type-$type-fail-$date";
-	my $faildir = "$store_failures/$dir";
-
-	if (!-d $faildir) {
-	    mkpath($faildir) or
-		die "can't create $faildir";
-	}
-	if (-f "$output_config") {
-	    cp "$output_config", "$faildir/config" or
-		die "failed to copy .config";
-	}
-	if (-f $buildlog) {
-	    cp $buildlog, "$faildir/buildlog" or
-		die "failed to move $buildlog";
-	}
-	if (-f $dmesg) {
-	    cp $dmesg, "$faildir/dmesg" or
-		die "failed to move $dmesg";
-	}
-
-	doprint "*** Saved info to $faildir ***\n";
+	if (defined($store_failures)) {
+	    save_logs "fail", $store_failures;
+        }
 
 	return 1;
 }
@@ -1170,13 +1424,16 @@
 }
 
 sub reboot_to {
-    if ($reboot_type eq "grub") {
-	run_ssh "'(echo \"savedefault --default=$grub_number --once\" | grub --batch)'";
-	reboot;
-	return;
+    if (defined($switch_to_test)) {
+	run_command $switch_to_test;
     }
 
-    run_command "$reboot_script";
+    if ($reboot_type eq "grub") {
+	run_ssh "'(echo \"savedefault --default=$grub_number --once\" | grub --batch)'";
+    } elsif (defined $reboot_script) {
+	run_command "$reboot_script";
+    }
+    reboot;
 }
 
 sub get_sha1 {
@@ -1274,7 +1531,7 @@
 	}
 
 	if ($full_line =~ /call trace:/i) {
-	    if (!$bug && !$skip_call_trace) {
+	    if (!$ignore_errors && !$bug && !$skip_call_trace) {
 		$bug = 1;
 		$failure_start = time;
 	    }
@@ -1341,12 +1598,19 @@
     return 1;
 }
 
+sub eval_kernel_version {
+    my ($option) = @_;
+
+    $option =~ s/\$KERNEL_VERSION/$version/g;
+
+    return $option;
+}
+
 sub do_post_install {
 
     return if (!defined($post_install));
 
-    my $cp_post_install = $post_install;
-    $cp_post_install =~ s/\$KERNEL_VERSION/$version/g;
+    my $cp_post_install = eval_kernel_version $post_install;
     run_command "$cp_post_install" or
 	dodie "Failed to run post install";
 }
@@ -1355,7 +1619,9 @@
 
     return if ($no_install);
 
-    run_scp "$outputdir/$build_target", "$target_image" or
+    my $cp_target = eval_kernel_version $target_image;
+
+    run_scp "$outputdir/$build_target", "$cp_target" or
 	dodie "failed to copy image";
 
     my $install_mods = 0;
@@ -1640,9 +1906,13 @@
     doprint     "*******************************************\n";
     doprint     "*******************************************\n";
 
+    if (defined($store_successes)) {
+        save_logs "success", $store_successes;
+    }
+
     if ($i != $opt{"NUM_TESTS"} && !do_not_reboot) {
 	doprint "Reboot and wait $sleep_time seconds\n";
-	reboot $sleep_time;
+	reboot_to_good $sleep_time;
     }
 }
 
@@ -1669,7 +1939,10 @@
     $poweroff_on_error = 0;
     $die_on_failure = 1;
 
+    $redirect = "$testlog";
     run_command $run_test or $failed = 1;
+    undef $redirect;
+
     exit $failed;
 }
 
@@ -1744,6 +2017,43 @@
     waitpid $child_pid, 0;
     $child_exit = $?;
 
+    if (!$bug && $in_bisect) {
+	if (defined($bisect_ret_good)) {
+	    if ($child_exit == $bisect_ret_good) {
+		return 1;
+	    }
+	}
+	if (defined($bisect_ret_skip)) {
+	    if ($child_exit == $bisect_ret_skip) {
+		return -1;
+	    }
+	}
+	if (defined($bisect_ret_abort)) {
+	    if ($child_exit == $bisect_ret_abort) {
+		fail "test abort" and return -2;
+	    }
+	}
+	if (defined($bisect_ret_bad)) {
+	    if ($child_exit == $bisect_ret_skip) {
+		return 0;
+	    }
+	}
+	if (defined($bisect_ret_default)) {
+	    if ($bisect_ret_default eq "good") {
+		return 1;
+	    } elsif ($bisect_ret_default eq "bad") {
+		return 0;
+	    } elsif ($bisect_ret_default eq "skip") {
+		return -1;
+	    } elsif ($bisect_ret_default eq "abort") {
+		return -2;
+	    } else {
+		fail "unknown default action: $bisect_ret_default"
+		    and return -2;
+	    }
+	}
+    }
+
     if ($bug || $child_exit) {
 	return 0 if $in_bisect;
 	fail "test failed" and return 0;
@@ -1770,7 +2080,7 @@
     if ($output =~ m/^(Bisecting: .*\(roughly \d+ steps?\))\s+\[([[:xdigit:]]+)\]/) {
 	doprint "$1 [$2]\n";
     } elsif ($output =~ m/^([[:xdigit:]]+) is the first bad commit/) {
-	$bisect_bad = $1;
+	$bisect_bad_commit = $1;
 	doprint "Found bad commit... $1\n";
 	return 0;
     } else {
@@ -1783,7 +2093,7 @@
 
 sub bisect_reboot {
     doprint "Reboot and sleep $bisect_sleep_time seconds\n";
-    reboot $bisect_sleep_time;
+    reboot_to_good $bisect_sleep_time;
 }
 
 # returns 1 on success, 0 on failure, -1 on skip
@@ -1868,21 +2178,28 @@
     }
 }
 
+sub update_bisect_replay {
+    my $tmp_log = "$tmpdir/ktest_bisect_log";
+    run_command "git bisect log > $tmp_log" or
+	die "can't create bisect log";
+    return $tmp_log;
+}
+
 sub bisect {
     my ($i) = @_;
 
     my $result;
 
-    die "BISECT_GOOD[$i] not defined\n"	if (!defined($opt{"BISECT_GOOD[$i]"}));
-    die "BISECT_BAD[$i] not defined\n"	if (!defined($opt{"BISECT_BAD[$i]"}));
-    die "BISECT_TYPE[$i] not defined\n"	if (!defined($opt{"BISECT_TYPE[$i]"}));
+    die "BISECT_GOOD[$i] not defined\n"	if (!defined($bisect_good));
+    die "BISECT_BAD[$i] not defined\n"	if (!defined($bisect_bad));
+    die "BISECT_TYPE[$i] not defined\n"	if (!defined($bisect_type));
 
-    my $good = $opt{"BISECT_GOOD[$i]"};
-    my $bad = $opt{"BISECT_BAD[$i]"};
-    my $type = $opt{"BISECT_TYPE[$i]"};
-    my $start = $opt{"BISECT_START[$i]"};
-    my $replay = $opt{"BISECT_REPLAY[$i]"};
-    my $start_files = $opt{"BISECT_FILES[$i]"};
+    my $good = $bisect_good;
+    my $bad = $bisect_bad;
+    my $type = $bisect_type;
+    my $start = $bisect_start;
+    my $replay = $bisect_replay;
+    my $start_files = $bisect_files;
 
     if (defined($start_files)) {
 	$start_files = " -- " . $start_files;
@@ -1894,8 +2211,7 @@
     $good = get_sha1($good);
     $bad = get_sha1($bad);
 
-    if (defined($opt{"BISECT_REVERSE[$i]"}) &&
-	$opt{"BISECT_REVERSE[$i]"} == 1) {
+    if (defined($bisect_reverse) && $bisect_reverse == 1) {
 	doprint "Performing a reverse bisect (bad is good, good is bad!)\n";
 	$reverse_bisect = 1;
     } else {
@@ -1907,8 +2223,31 @@
 	$type = "boot";
     }
 
-    my $check = $opt{"BISECT_CHECK[$i]"};
-    if (defined($check) && $check ne "0") {
+    # Check if a bisect was running
+    my $bisect_start_file = "$builddir/.git/BISECT_START";
+
+    my $check = $bisect_check;
+    my $do_check = defined($check) && $check ne "0";
+
+    if ( -f $bisect_start_file ) {
+	print "Bisect in progress found\n";
+	if ($do_check) {
+	    print " If you say yes, then no checks of good or bad will be done\n";
+	}
+	if (defined($replay)) {
+	    print "** BISECT_REPLAY is defined in config file **";
+	    print " Ignore config option and perform new git bisect log?\n";
+	    if (read_ync " (yes, no, or cancel) ") {
+		$replay = update_bisect_replay;
+		$do_check = 0;
+	    }
+	} elsif (read_yn "read git log and continue?") {
+	    $replay = update_bisect_replay;
+	    $do_check = 0;
+	}
+    }
+
+    if ($do_check) {
 
 	# get current HEAD
 	my $head = get_sha1("HEAD");
@@ -1973,7 +2312,7 @@
     run_command "git bisect reset" or
 	dodie "could not reset git bisect";
 
-    doprint "Bad commit was [$bisect_bad]\n";
+    doprint "Bad commit was [$bisect_bad_commit]\n";
 
     success $i;
 }
@@ -2129,7 +2468,7 @@
     }
 
     doprint "***** RUN TEST ***\n";
-    my $type = $opt{"CONFIG_BISECT_TYPE[$iteration]"};
+    my $type = $config_bisect_type;
     my $ret;
     my %current_config;
 
@@ -2233,7 +2572,7 @@
 sub config_bisect {
     my ($i) = @_;
 
-    my $start_config = $opt{"CONFIG_BISECT[$i]"};
+    my $start_config = $config_bisect;
 
     my $tmpconfig = "$tmpdir/use_config";
 
@@ -2346,29 +2685,29 @@
 
 sub patchcheck_reboot {
     doprint "Reboot and sleep $patchcheck_sleep_time seconds\n";
-    reboot $patchcheck_sleep_time;
+    reboot_to_good $patchcheck_sleep_time;
 }
 
 sub patchcheck {
     my ($i) = @_;
 
     die "PATCHCHECK_START[$i] not defined\n"
-	if (!defined($opt{"PATCHCHECK_START[$i]"}));
+	if (!defined($patchcheck_start));
     die "PATCHCHECK_TYPE[$i] not defined\n"
-	if (!defined($opt{"PATCHCHECK_TYPE[$i]"}));
+	if (!defined($patchcheck_type));
 
-    my $start = $opt{"PATCHCHECK_START[$i]"};
+    my $start = $patchcheck_start;
 
     my $end = "HEAD";
-    if (defined($opt{"PATCHCHECK_END[$i]"})) {
-	$end = $opt{"PATCHCHECK_END[$i]"};
+    if (defined($patchcheck_end)) {
+	$end = $patchcheck_end;
     }
 
     # Get the true sha1's since we can use things like HEAD~3
     $start = get_sha1($start);
     $end = get_sha1($end);
 
-    my $type = $opt{"PATCHCHECK_TYPE[$i]"};
+    my $type = $patchcheck_type;
 
     # Can't have a test without having a test to run
     if ($type eq "test" && !defined($run_test)) {
@@ -2963,7 +3302,7 @@
 	}
 
 	doprint "Reboot and wait $sleep_time seconds\n";
-	reboot $sleep_time;
+	reboot_to_good $sleep_time;
     }
 
     success $i;
@@ -2985,13 +3324,27 @@
 }
 
 if (! -f $ktest_config) {
+    $newconfig = 1;
+    get_test_case;
     open(OUT, ">$ktest_config") or die "Can not create $ktest_config";
     print OUT << "EOF"
 # Generated by ktest.pl
 #
+
+# PWD is a ktest.pl variable that will result in the process working
+# directory that ktest.pl is executed in.
+
+# THIS_DIR is automatically assigned the PWD of the path that generated
+# the config file. It is best to use this variable when assigning other
+# directory paths within this directory. This allows you to easily
+# move the test cases to other locations or to other machines.
+#
+THIS_DIR := $variable{"PWD"}
+
 # Define each test with TEST_START
 # The config options below it will override the defaults
 TEST_START
+TEST_TYPE = $default{"TEST_TYPE"}
 
 DEFAULTS
 EOF
@@ -3011,7 +3364,7 @@
     open(OUT, ">>$ktest_config") or die "Can not append to $ktest_config";
     foreach my $config (@new_configs) {
 	print OUT "$config = $entered_configs{$config}\n";
-	$opt{$config} = $entered_configs{$config};
+	$opt{$config} = process_variables($entered_configs{$config});
     }
 }
 
@@ -3091,61 +3444,10 @@
 
     my $makecmd = set_test_option("MAKE_CMD", $i);
 
-    $machine = set_test_option("MACHINE", $i);
-    $ssh_user = set_test_option("SSH_USER", $i);
-    $tmpdir = set_test_option("TMP_DIR", $i);
-    $outputdir = set_test_option("OUTPUT_DIR", $i);
-    $builddir = set_test_option("BUILD_DIR", $i);
-    $test_type = set_test_option("TEST_TYPE", $i);
-    $build_type = set_test_option("BUILD_TYPE", $i);
-    $build_options = set_test_option("BUILD_OPTIONS", $i);
-    $pre_build = set_test_option("PRE_BUILD", $i);
-    $post_build = set_test_option("POST_BUILD", $i);
-    $pre_build_die = set_test_option("PRE_BUILD_DIE", $i);
-    $post_build_die = set_test_option("POST_BUILD_DIE", $i);
-    $power_cycle = set_test_option("POWER_CYCLE", $i);
-    $reboot = set_test_option("REBOOT", $i);
-    $noclean = set_test_option("BUILD_NOCLEAN", $i);
-    $minconfig = set_test_option("MIN_CONFIG", $i);
-    $output_minconfig = set_test_option("OUTPUT_MIN_CONFIG", $i);
-    $start_minconfig = set_test_option("START_MIN_CONFIG", $i);
-    $ignore_config = set_test_option("IGNORE_CONFIG", $i);
-    $run_test = set_test_option("TEST", $i);
-    $addconfig = set_test_option("ADD_CONFIG", $i);
-    $reboot_type = set_test_option("REBOOT_TYPE", $i);
-    $grub_menu = set_test_option("GRUB_MENU", $i);
-    $post_install = set_test_option("POST_INSTALL", $i);
-    $no_install = set_test_option("NO_INSTALL", $i);
-    $reboot_script = set_test_option("REBOOT_SCRIPT", $i);
-    $reboot_on_error = set_test_option("REBOOT_ON_ERROR", $i);
-    $poweroff_on_error = set_test_option("POWEROFF_ON_ERROR", $i);
-    $die_on_failure = set_test_option("DIE_ON_FAILURE", $i);
-    $power_off = set_test_option("POWER_OFF", $i);
-    $powercycle_after_reboot = set_test_option("POWERCYCLE_AFTER_REBOOT", $i);
-    $poweroff_after_halt = set_test_option("POWEROFF_AFTER_HALT", $i);
-    $sleep_time = set_test_option("SLEEP_TIME", $i);
-    $bisect_sleep_time = set_test_option("BISECT_SLEEP_TIME", $i);
-    $patchcheck_sleep_time = set_test_option("PATCHCHECK_SLEEP_TIME", $i);
-    $ignore_warnings = set_test_option("IGNORE_WARNINGS", $i);
-    $bisect_manual = set_test_option("BISECT_MANUAL", $i);
-    $bisect_skip = set_test_option("BISECT_SKIP", $i);
-    $config_bisect_good = set_test_option("CONFIG_BISECT_GOOD", $i);
-    $store_failures = set_test_option("STORE_FAILURES", $i);
-    $test_name = set_test_option("TEST_NAME", $i);
-    $timeout = set_test_option("TIMEOUT", $i);
-    $booted_timeout = set_test_option("BOOTED_TIMEOUT", $i);
-    $console = set_test_option("CONSOLE", $i);
-    $detect_triplefault = set_test_option("DETECT_TRIPLE_FAULT", $i);
-    $success_line = set_test_option("SUCCESS_LINE", $i);
-    $reboot_success_line = set_test_option("REBOOT_SUCCESS_LINE", $i);
-    $stop_after_success = set_test_option("STOP_AFTER_SUCCESS", $i);
-    $stop_after_failure = set_test_option("STOP_AFTER_FAILURE", $i);
-    $stop_test_after = set_test_option("STOP_TEST_AFTER", $i);
-    $build_target = set_test_option("BUILD_TARGET", $i);
-    $ssh_exec = set_test_option("SSH_EXEC", $i);
-    $scp_to_target = set_test_option("SCP_TO_TARGET", $i);
-    $target_image = set_test_option("TARGET_IMAGE", $i);
-    $localversion = set_test_option("LOCALVERSION", $i);
+    # Load all the options into their mapped variable names
+    foreach my $opt (keys %option_map) {
+	${$option_map{$opt}} = set_test_option($opt, $i);
+    }
 
     $start_minconfig_defined = 1;
 
@@ -3166,26 +3468,26 @@
     $ENV{"SSH_USER"} = $ssh_user;
     $ENV{"MACHINE"} = $machine;
 
-    $target = "$ssh_user\@$machine";
-
     $buildlog = "$tmpdir/buildlog-$machine";
+    $testlog = "$tmpdir/testlog-$machine";
     $dmesg = "$tmpdir/dmesg-$machine";
     $make = "$makecmd O=$outputdir";
     $output_config = "$outputdir/.config";
 
-    if ($reboot_type eq "grub") {
-	dodie "GRUB_MENU not defined" if (!defined($grub_menu));
-    } elsif (!defined($reboot_script)) {
-	dodie "REBOOT_SCRIPT not defined"
+    if (!$buildonly) {
+	$target = "$ssh_user\@$machine";
+	if ($reboot_type eq "grub") {
+	    dodie "GRUB_MENU not defined" if (!defined($grub_menu));
+	}
     }
 
     my $run_type = $build_type;
     if ($test_type eq "patchcheck") {
-	$run_type = $opt{"PATCHCHECK_TYPE[$i]"};
+	$run_type = $patchcheck_type;
     } elsif ($test_type eq "bisect") {
-	$run_type = $opt{"BISECT_TYPE[$i]"};
+	$run_type = $bisect_type;
     } elsif ($test_type eq "config_bisect") {
-	$run_type = $opt{"CONFIG_BISECT_TYPE[$i]"};
+	$run_type = $config_bisect_type;
     }
 
     if ($test_type eq "make_min_config") {
@@ -3205,6 +3507,7 @@
 
     unlink $dmesg;
     unlink $buildlog;
+    unlink $testlog;
 
     if (defined($addconfig)) {
 	my $min = $minconfig;
@@ -3216,7 +3519,6 @@
 	$minconfig = "$tmpdir/add_config";
     }
 
-    my $checkout = $opt{"CHECKOUT[$i]"};
     if (defined($checkout)) {
 	run_command "git checkout $checkout" or
 	    die "failed to checkout $checkout";
@@ -3267,7 +3569,7 @@
 if ($opt{"POWEROFF_ON_SUCCESS"}) {
     halt;
 } elsif ($opt{"REBOOT_ON_SUCCESS"} && !do_not_reboot) {
-    reboot;
+    reboot_to_good;
 }
 
 doprint "\n    $successes of $opt{NUM_TESTS} tests were successful\n\n";
diff --git a/tools/testing/ktest/sample.conf b/tools/testing/ktest/sample.conf
index 553c06b..5ea04c6 100644
--- a/tools/testing/ktest/sample.conf
+++ b/tools/testing/ktest/sample.conf
@@ -346,7 +346,10 @@
 #GRUB_MENU = Test Kernel
 
 # A script to reboot the target into the test kernel
-# (Only mandatory if REBOOT_TYPE = script)
+# This and SWITCH_TO_TEST are about the same, except
+# SWITCH_TO_TEST is run even for REBOOT_TYPE = grub.
+# This may be left undefined.
+# (default undefined)
 #REBOOT_SCRIPT =
 
 #### Optional Config Options (all have defaults) ####
@@ -468,6 +471,27 @@
 # The test will not modify that file.
 #REBOOT_TYPE = grub
 
+# If you are using a machine that doesn't boot with grub, and
+# perhaps gets its kernel from a remote server (tftp), then
+# you can use this option to update the target image with the
+# test image.
+#
+# You could also do the same with POST_INSTALL, but the difference
+# between that option and this option is that POST_INSTALL runs
+# after the install, where this one runs just before a reboot.
+# (default undefined)
+#SWITCH_TO_TEST = cp ${OUTPUT_DIR}/${BUILD_TARGET} ${TARGET_IMAGE}
+
+# If you are using a machine that doesn't boot with grub, and
+# perhaps gets its kernel from a remote server (tftp), then
+# you can use this option to update the target image with the
+# the known good image to reboot safely back into.
+#
+# This option holds a command that will execute before needing
+# to reboot to a good known image.
+# (default undefined)
+#SWITCH_TO_GOOD = ssh ${SSH_USER}/${MACHINE} cp good_image ${TARGET_IMAGE}
+
 # The min config that is needed to build for the machine
 # A nice way to create this is with the following:
 #
@@ -589,6 +613,12 @@
 # (default undefined)
 #STORE_FAILURES = /home/test/failures
 
+# Directory to store success directories on success. If this is not
+# set, the .config, dmesg and bootlog will not be saved if a
+# test succeeds.
+# (default undefined)
+#STORE_SUCCESSES = /home/test/successes
+
 # Build without doing a make mrproper, or removing .config
 # (default 0)
 #BUILD_NOCLEAN = 0
@@ -700,6 +730,25 @@
 # (default 1)
 #DETECT_TRIPLE_FAULT = 0
 
+# All options in the config file should be either used by ktest
+# or could be used within a value of another option. If an option
+# in the config file is not used, ktest will warn about it and ask
+# if you want to continue.
+#
+# If you don't care if there are non-used options, enable this
+# option. Be careful though, a non-used option is usually a sign
+# of an option name being typed incorrectly.
+# (default 0)
+#IGNORE_UNUSED = 1
+
+# When testing a kernel that happens to have WARNINGs, and call
+# traces, ktest.pl will detect these and fail a boot or test run
+# due to warnings. By setting this option, ktest will ignore
+# call traces, and will not fail a test if the kernel produces
+# an oops. Use this option with care.
+# (default 0)
+#IGNORE_ERRORS = 1
+
 #### Per test run options ####
 # The following options are only allowed in TEST_START sections.
 # They are ignored in the DEFAULTS sections.
@@ -862,6 +911,42 @@
 #   BISECT_BAD with BISECT_CHECK = good or
 #   BISECT_CHECK = bad, respectively.
 #
+# BISECT_RET_GOOD = 0 (optional, default undefined)
+#
+#   In case the specificed test returns something other than just
+#   0 for good, and non-zero for bad, you can override 0 being
+#   good by defining BISECT_RET_GOOD.
+#
+# BISECT_RET_BAD = 1 (optional, default undefined)
+#
+#   In case the specificed test returns something other than just
+#   0 for good, and non-zero for bad, you can override non-zero being
+#   bad by defining BISECT_RET_BAD.
+#
+# BISECT_RET_ABORT = 255 (optional, default undefined)
+#
+#   If you need to abort the bisect if the test discovers something
+#   that was wrong, you can define BISECT_RET_ABORT to be the error
+#   code returned by the test in order to abort the bisect.
+#
+# BISECT_RET_SKIP = 2 (optional, default undefined)
+#
+#   If the test detects that the current commit is neither good
+#   nor bad, but something else happened (another bug detected)
+#   you can specify BISECT_RET_SKIP to an error code that the
+#   test returns when it should skip the current commit.
+#
+# BISECT_RET_DEFAULT = good (optional, default undefined)
+#
+#   You can override the default of what to do when the above
+#   options are not hit. This may be one of, "good", "bad",
+#   "abort" or "skip" (without the quotes).
+#
+#   Note, if you do not define any of the previous BISECT_RET_*
+#   and define BISECT_RET_DEFAULT, all bisects results will do
+#   what the BISECT_RET_DEFAULT has.
+#
+#
 # Example:
 #   TEST_START
 #   TEST_TYPE = bisect