diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index a48712e..9916e4d 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -30,9 +30,9 @@
 	select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT)
 	select HAVE_ARCH_TRACEHOOK
 	select HAVE_BPF_JIT
+	select HAVE_CC_STACKPROTECTOR
 	select HAVE_CONTEXT_TRACKING
 	select HAVE_C_RECORDMCOUNT
-	select HAVE_CC_STACKPROTECTOR
 	select HAVE_DEBUG_KMEMLEAK
 	select HAVE_DMA_API_DEBUG
 	select HAVE_DMA_ATTRS
@@ -423,8 +423,8 @@
 	bool "Energy Micro efm32"
 	depends on !MMU
 	select ARCH_REQUIRE_GPIOLIB
-	select AUTO_ZRELADDR
 	select ARM_NVIC
+	select AUTO_ZRELADDR
 	select CLKSRC_OF
 	select COMMON_CLK
 	select CPU_V7M
@@ -512,8 +512,8 @@
 	bool "IXP4xx-based"
 	depends on MMU
 	select ARCH_HAS_DMA_SET_COHERENT_MASK
-	select ARCH_SUPPORTS_BIG_ENDIAN
 	select ARCH_REQUIRE_GPIOLIB
+	select ARCH_SUPPORTS_BIG_ENDIAN
 	select CLKSRC_MMIO
 	select CPU_XSCALE
 	select DMABOUNCE if PCI
@@ -1576,8 +1576,8 @@
 config BL_SWITCHER
 	bool "big.LITTLE switcher support"
 	depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
-	select CPU_PM
 	select ARM_CPU_SUSPEND
+	select CPU_PM
 	help
 	  The big.LITTLE "switcher" provides the core functionality to
 	  transparently handle transition between a cluster of A15's
@@ -1921,9 +1921,9 @@
 	depends on CPU_V7 && !CPU_V6
 	depends on !GENERIC_ATOMIC64
 	depends on MMU
+	select ARCH_DMA_ADDR_T_64BIT
 	select ARM_PSCI
 	select SWIOTLB_XEN
-	select ARCH_DMA_ADDR_T_64BIT
 	help
 	  Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
 
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 4a2fc0b..eab8ecb 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -1030,9 +1030,9 @@
 	default 0x40100000 if DEBUG_PXA_UART1
 	default 0x42000000 if ARCH_GEMINI
 	default 0x7c0003f8 if FOOTBRIDGE
-	default 0x80230000 if DEBUG_PICOXCELL_UART
 	default 0x80070000 if DEBUG_IMX23_UART
 	default 0x80074000 if DEBUG_IMX28_UART
+	default 0x80230000 if DEBUG_PICOXCELL_UART
 	default 0x808c0000 if ARCH_EP93XX
 	default 0x90020000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART
 	default 0xb0090000 if DEBUG_VEXPRESS_UART0_CRX
@@ -1096,22 +1096,22 @@
 	default 0xfeb26000 if DEBUG_RK3X_UART1
 	default 0xfeb30c00 if DEBUG_KEYSTONE_UART0
 	default 0xfeb31000 if DEBUG_KEYSTONE_UART1
-	default 0xfec12000 if DEBUG_MVEBU_UART || DEBUG_MVEBU_UART_ALTERNATE
-	default 0xfed60000 if DEBUG_RK29_UART0
-	default 0xfed64000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
-	default 0xfed68000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
 	default 0xfec02000 if DEBUG_SOCFPGA_UART
+	default 0xfec12000 if DEBUG_MVEBU_UART || DEBUG_MVEBU_UART_ALTERNATE
 	default 0xfec20000 if DEBUG_DAVINCI_DMx_UART0
 	default 0xfed0c000 if DEBUG_DAVINCI_DA8XX_UART1
 	default 0xfed0d000 if DEBUG_DAVINCI_DA8XX_UART2
 	default 0xfed12000 if ARCH_KIRKWOOD
+	default 0xfed60000 if DEBUG_RK29_UART0
+	default 0xfed64000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
+	default 0xfed68000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
 	default 0xfedc0000 if ARCH_EP93XX
 	default 0xfee003f8 if FOOTBRIDGE
 	default 0xfee20000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART
-	default 0xfef36000 if DEBUG_HIGHBANK_UART
 	default 0xfee82340 if ARCH_IOP13XX
 	default 0xfef00000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
 	default 0xfef00003 if ARCH_IXP4XX && CPU_BIG_ENDIAN
+	default 0xfef36000 if DEBUG_HIGHBANK_UART
 	default 0xfefff700 if ARCH_IOP33X
 	default 0xff003000 if DEBUG_U300_UART
 	default DEBUG_UART_PHYS if !MMU
diff --git a/arch/arm/common/bL_switcher.c b/arch/arm/common/bL_switcher.c
index 5774b6e..f01c0ee 100644
--- a/arch/arm/common/bL_switcher.c
+++ b/arch/arm/common/bL_switcher.c
@@ -797,10 +797,8 @@
 {
 	int ret;
 
-	if (MAX_NR_CLUSTERS != 2) {
-		pr_err("%s: only dual cluster systems are supported\n", __func__);
-		return -EINVAL;
-	}
+	if (!mcpm_is_available())
+		return -ENODEV;
 
 	cpu_notifier(bL_switcher_hotplug_callback, 0);
 
diff --git a/arch/arm/common/mcpm_entry.c b/arch/arm/common/mcpm_entry.c
index 1e361ab..86fd60f 100644
--- a/arch/arm/common/mcpm_entry.c
+++ b/arch/arm/common/mcpm_entry.c
@@ -48,6 +48,11 @@
 	return 0;
 }
 
+bool mcpm_is_available(void)
+{
+	return (platform_ops) ? true : false;
+}
+
 int mcpm_cpu_power_up(unsigned int cpu, unsigned int cluster)
 {
 	if (!platform_ops)
diff --git a/arch/arm/include/asm/div64.h b/arch/arm/include/asm/div64.h
index 191ada6..662c7bd 100644
--- a/arch/arm/include/asm/div64.h
+++ b/arch/arm/include/asm/div64.h
@@ -156,7 +156,7 @@
 		/* Select the best insn combination to perform the   */	\
 		/* actual __m * __n / (__p << 64) operation.         */	\
 		if (!__c) {						\
-			asm (	"umull	%Q0, %R0, %1, %Q2\n\t"		\
+			asm (	"umull	%Q0, %R0, %Q1, %Q2\n\t"		\
 				"mov	%Q0, #0"			\
 				: "=&r" (__res)				\
 				: "r" (__m), "r" (__n)			\
diff --git a/arch/arm/include/asm/mcpm.h b/arch/arm/include/asm/mcpm.h
index 608516e..a5ff410 100644
--- a/arch/arm/include/asm/mcpm.h
+++ b/arch/arm/include/asm/mcpm.h
@@ -54,6 +54,13 @@
  */
 
 /**
+ * mcpm_is_available - returns whether MCPM is initialized and available
+ *
+ * This returns true or false accordingly.
+ */
+bool mcpm_is_available(void);
+
+/**
  * mcpm_cpu_power_up - make given CPU in given cluster runable
  *
  * @cpu: CPU number within given cluster
diff --git a/arch/arm/include/uapi/asm/unistd.h b/arch/arm/include/uapi/asm/unistd.h
index fb5584d..ba94446 100644
--- a/arch/arm/include/uapi/asm/unistd.h
+++ b/arch/arm/include/uapi/asm/unistd.h
@@ -408,6 +408,7 @@
 #define __NR_finit_module		(__NR_SYSCALL_BASE+379)
 #define __NR_sched_setattr		(__NR_SYSCALL_BASE+380)
 #define __NR_sched_getattr		(__NR_SYSCALL_BASE+381)
+#define __NR_renameat2			(__NR_SYSCALL_BASE+382)
 
 /*
  * This may need to be greater than __NR_last_syscall+1 in order to
diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S
index 166e945..8f51bdc 100644
--- a/arch/arm/kernel/calls.S
+++ b/arch/arm/kernel/calls.S
@@ -391,6 +391,7 @@
 		CALL(sys_finit_module)
 /* 380 */	CALL(sys_sched_setattr)
 		CALL(sys_sched_getattr)
+		CALL(sys_renameat2)
 #ifndef syscalls_counted
 .equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls
 #define syscalls_counted
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index f8c0883..591d6e4 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -587,7 +587,7 @@
 	add	r6, r6, r3	@ adjust __pv_phys_pfn_offset address
 	add	r7, r7, r3	@ adjust __pv_offset address
 	mov	r0, r8, lsr #12	@ convert to PFN
-	str	r0, [r6, #LOW_OFFSET]	@ save computed PHYS_OFFSET to __pv_phys_pfn_offset
+	str	r0, [r6]	@ save computed PHYS_OFFSET to __pv_phys_pfn_offset
 	strcc	ip, [r7, #HIGH_OFFSET]	@ save to __pv_offset high bits
 	mov	r6, r3, lsr #24	@ constant for add/sub instructions
 	teq	r3, r6, lsl #24 @ must be 16MiB aligned
diff --git a/arch/arm/kernel/machine_kexec.c b/arch/arm/kernel/machine_kexec.c
index f0d180d..8cf0996 100644
--- a/arch/arm/kernel/machine_kexec.c
+++ b/arch/arm/kernel/machine_kexec.c
@@ -184,3 +184,10 @@
 
 	soft_restart(reboot_entry_phys);
 }
+
+void arch_crash_save_vmcoreinfo(void)
+{
+#ifdef CONFIG_ARM_LPAE
+	VMCOREINFO_CONFIG(ARM_LPAE);
+#endif
+}
diff --git a/arch/arm/kernel/sys_oabi-compat.c b/arch/arm/kernel/sys_oabi-compat.c
index 702bd32..e90a314 100644
--- a/arch/arm/kernel/sys_oabi-compat.c
+++ b/arch/arm/kernel/sys_oabi-compat.c
@@ -203,9 +203,9 @@
 	int ret;
 
 	switch (cmd) {
-	case F_GETLKP:
-	case F_SETLKP:
-	case F_SETLKPW:
+	case F_OFD_GETLK:
+	case F_OFD_SETLK:
+	case F_OFD_SETLKW:
 	case F_GETLK64:
 	case F_SETLK64:
 	case F_SETLKW64:
diff --git a/arch/arm/mach-shmobile/clock-r8a7778.c b/arch/arm/mach-shmobile/clock-r8a7778.c
index 2009a9b..9989b1b 100644
--- a/arch/arm/mach-shmobile/clock-r8a7778.c
+++ b/arch/arm/mach-shmobile/clock-r8a7778.c
@@ -170,7 +170,7 @@
 	[MSTP010] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 10, 0), /* SSI2 */
 	[MSTP009] = SH_CLK_MSTP32(&p_clk, MSTPCR0,  9, 0), /* SSI3 */
 	[MSTP008] = SH_CLK_MSTP32(&p_clk, MSTPCR0,  8, 0), /* SRU */
-	[MSTP007] = SH_CLK_MSTP32(&p_clk, MSTPCR0,  7, 0), /* HSPI */
+	[MSTP007] = SH_CLK_MSTP32(&s_clk, MSTPCR0,  7, 0), /* HSPI */
 };
 
 static struct clk_lookup lookups[] = {
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index f5ad9ee..5bf7c3c 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -420,29 +420,29 @@
 	bool
 	select CPU_USE_DOMAINS if MMU
 	select NEEDS_SYSCALL_FOR_CMPXCHG if SMP
-	select TLS_REG_EMUL if SMP || !MMU
 	select NEED_KUSER_HELPERS
+	select TLS_REG_EMUL if SMP || !MMU
 
 config CPU_32v4
 	bool
 	select CPU_USE_DOMAINS if MMU
 	select NEEDS_SYSCALL_FOR_CMPXCHG if SMP
-	select TLS_REG_EMUL if SMP || !MMU
 	select NEED_KUSER_HELPERS
+	select TLS_REG_EMUL if SMP || !MMU
 
 config CPU_32v4T
 	bool
 	select CPU_USE_DOMAINS if MMU
 	select NEEDS_SYSCALL_FOR_CMPXCHG if SMP
-	select TLS_REG_EMUL if SMP || !MMU
 	select NEED_KUSER_HELPERS
+	select TLS_REG_EMUL if SMP || !MMU
 
 config CPU_32v5
 	bool
 	select CPU_USE_DOMAINS if MMU
 	select NEEDS_SYSCALL_FOR_CMPXCHG if SMP
-	select TLS_REG_EMUL if SMP || !MMU
 	select NEED_KUSER_HELPERS
+	select TLS_REG_EMUL if SMP || !MMU
 
 config CPU_32v6
 	bool
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index f62aa06..6b00be1 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -1963,8 +1963,8 @@
 	mapping->nr_bitmaps = 1;
 	mapping->extensions = extensions;
 	mapping->base = base;
-	mapping->size = bitmap_size << PAGE_SHIFT;
 	mapping->bits = BITS_PER_BYTE * bitmap_size;
+	mapping->size = mapping->bits << PAGE_SHIFT;
 
 	spin_lock_init(&mapping->lock);
 
diff --git a/arch/arm/vfp/vfpdouble.c b/arch/arm/vfp/vfpdouble.c
index 6cac43b..423f56d 100644
--- a/arch/arm/vfp/vfpdouble.c
+++ b/arch/arm/vfp/vfpdouble.c
@@ -866,6 +866,8 @@
 		vdp.sign = vfp_sign_negate(vdp.sign);
 
 	vfp_double_unpack(&vdn, vfp_get_double(dd));
+	if (vdn.exponent == 0 && vdn.significand)
+		vfp_double_normalise_denormal(&vdn);
 	if (negate & NEG_SUBTRACT)
 		vdn.sign = vfp_sign_negate(vdn.sign);
 
diff --git a/arch/arm/vfp/vfpsingle.c b/arch/arm/vfp/vfpsingle.c
index b252631..4f96c16 100644
--- a/arch/arm/vfp/vfpsingle.c
+++ b/arch/arm/vfp/vfpsingle.c
@@ -915,6 +915,8 @@
 	v = vfp_get_float(sd);
 	pr_debug("VFP: s%u = %08x\n", sd, v);
 	vfp_single_unpack(&vsn, v);
+	if (vsn.exponent == 0 && vsn.significand)
+		vfp_single_normalise_denormal(&vsn);
 	if (negate & NEG_SUBTRACT)
 		vsn.sign = vfp_sign_negate(vsn.sign);
 
diff --git a/arch/um/include/shared/os.h b/arch/um/include/shared/os.h
index 75298d3..08eec0b 100644
--- a/arch/um/include/shared/os.h
+++ b/arch/um/include/shared/os.h
@@ -136,6 +136,7 @@
 extern int os_get_ifname(int fd, char *namebuf);
 extern int os_set_slip(int fd);
 extern int os_mode_fd(int fd, int mode);
+extern int os_fsync_file(int fd);
 
 extern int os_seek_file(int fd, unsigned long long offset);
 extern int os_open_file(const char *file, struct openflags flags, int mode);
diff --git a/arch/um/kernel/physmem.c b/arch/um/kernel/physmem.c
index f116db1..30fdd5d 100644
--- a/arch/um/kernel/physmem.c
+++ b/arch/um/kernel/physmem.c
@@ -103,6 +103,7 @@
 	 */
 	os_seek_file(physmem_fd, __pa(&__syscall_stub_start));
 	os_write_file(physmem_fd, &__syscall_stub_start, PAGE_SIZE);
+	os_fsync_file(physmem_fd);
 
 	bootmap_size = init_bootmem(pfn, pfn + delta);
 	free_bootmem(__pa(reserve_end) + bootmap_size,
diff --git a/arch/um/os-Linux/file.c b/arch/um/os-Linux/file.c
index 07a7501..08d90fb 100644
--- a/arch/um/os-Linux/file.c
+++ b/arch/um/os-Linux/file.c
@@ -237,6 +237,12 @@
 {
 	close(fd);
 }
+int os_fsync_file(int fd)
+{
+	if (fsync(fd) < 0)
+	    return -errno;
+	return 0;
+}
 
 int os_seek_file(int fd, unsigned long long offset)
 {
diff --git a/arch/um/os-Linux/main.c b/arch/um/os-Linux/main.c
index e1704ff..df9191a 100644
--- a/arch/um/os-Linux/main.c
+++ b/arch/um/os-Linux/main.c
@@ -151,6 +151,7 @@
 #endif
 
 	do_uml_initcalls();
+	change_sig(SIGPIPE, 0);
 	ret = linux_main(argc, argv);
 
 	/*
diff --git a/arch/um/os-Linux/mem.c b/arch/um/os-Linux/mem.c
index 3c4af77..897e9ad 100644
--- a/arch/um/os-Linux/mem.c
+++ b/arch/um/os-Linux/mem.c
@@ -12,337 +12,117 @@
 #include <string.h>
 #include <sys/stat.h>
 #include <sys/mman.h>
-#include <sys/param.h>
+#include <sys/vfs.h>
+#include <linux/magic.h>
 #include <init.h>
 #include <os.h>
 
-/* Modified by which_tmpdir, which is called during early boot */
-static char *default_tmpdir = "/tmp";
-
-/*
- *  Modified when creating the physical memory file and when checking
- * the tmp filesystem for usability, both happening during early boot.
- */
+/* Set by make_tempfile() during early boot. */
 static char *tempdir = NULL;
 
-static void __init find_tempdir(void)
+/* Check if dir is on tmpfs. Return 0 if yes, -1 if no or error. */
+static int __init check_tmpfs(const char *dir)
 {
-	const char *dirs[] = { "TMP", "TEMP", "TMPDIR", NULL };
-	int i;
-	char *dir = NULL;
+	struct statfs st;
 
-	if (tempdir != NULL)
-		/* We've already been called */
-		return;
-	for (i = 0; dirs[i]; i++) {
-		dir = getenv(dirs[i]);
-		if ((dir != NULL) && (*dir != '\0'))
-			break;
-	}
-	if ((dir == NULL) || (*dir == '\0'))
-		dir = default_tmpdir;
-
-	tempdir = malloc(strlen(dir) + 2);
-	if (tempdir == NULL) {
-		fprintf(stderr, "Failed to malloc tempdir, "
-			"errno = %d\n", errno);
-		return;
-	}
-	strcpy(tempdir, dir);
-	strcat(tempdir, "/");
-}
-
-/*
- * Remove bytes from the front of the buffer and refill it so that if there's a
- * partial string that we care about, it will be completed, and we can recognize
- * it.
- */
-static int pop(int fd, char *buf, size_t size, size_t npop)
-{
-	ssize_t n;
-	size_t len = strlen(&buf[npop]);
-
-	memmove(buf, &buf[npop], len + 1);
-	n = read(fd, &buf[len], size - len - 1);
-	if (n < 0)
-		return -errno;
-
-	buf[len + n] = '\0';
-	return 1;
-}
-
-/*
- * This will return 1, with the first character in buf being the
- * character following the next instance of c in the file.  This will
- * read the file as needed.  If there's an error, -errno is returned;
- * if the end of the file is reached, 0 is returned.
- */
-static int next(int fd, char *buf, size_t size, char c)
-{
-	ssize_t n;
-	char *ptr;
-
-	while ((ptr = strchr(buf, c)) == NULL) {
-		n = read(fd, buf, size - 1);
-		if (n == 0)
-			return 0;
-		else if (n < 0)
-			return -errno;
-
-		buf[n] = '\0';
-	}
-
-	return pop(fd, buf, size, ptr - buf + 1);
-}
-
-/*
- * Decode an octal-escaped and space-terminated path of the form used by
- * /proc/mounts. May be used to decode a path in-place. "out" must be at least
- * as large as the input. The output is always null-terminated. "len" gets the
- * length of the output, excluding the trailing null. Returns 0 if a full path
- * was successfully decoded, otherwise an error.
- */
-static int decode_path(const char *in, char *out, size_t *len)
-{
-	char *first = out;
-	int c;
-	int i;
-	int ret = -EINVAL;
-	while (1) {
-		switch (*in) {
-		case '\0':
-			goto out;
-
-		case ' ':
-			ret = 0;
-			goto out;
-
-		case '\\':
-			in++;
-			c = 0;
-			for (i = 0; i < 3; i++) {
-				if (*in < '0' || *in > '7')
-					goto out;
-				c = (c << 3) | (*in++ - '0');
-			}
-			*(unsigned char *)out++ = (unsigned char) c;
-			break;
-
-		default:
-			*out++ = *in++;
-			break;
-		}
-	}
-
-out:
-	*out = '\0';
-	*len = out - first;
-	return ret;
-}
-
-/*
- * Computes the length of s when encoded with three-digit octal escape sequences
- * for the characters in chars.
- */
-static size_t octal_encoded_length(const char *s, const char *chars)
-{
-	size_t len = strlen(s);
-	while ((s = strpbrk(s, chars)) != NULL) {
-		len += 3;
-		s++;
-	}
-
-	return len;
-}
-
-enum {
-	OUTCOME_NOTHING_MOUNTED,
-	OUTCOME_TMPFS_MOUNT,
-	OUTCOME_NON_TMPFS_MOUNT,
-};
-
-/* Read a line of /proc/mounts data looking for a tmpfs mount at "path". */
-static int read_mount(int fd, char *buf, size_t bufsize, const char *path,
-		      int *outcome)
-{
-	int found;
-	int match;
-	char *space;
-	size_t len;
-
-	enum {
-		MATCH_NONE,
-		MATCH_EXACT,
-		MATCH_PARENT,
-	};
-
-	found = next(fd, buf, bufsize, ' ');
-	if (found != 1)
-		return found;
-
-	/*
-	 * If there's no following space in the buffer, then this path is
-	 * truncated, so it can't be the one we're looking for.
-	 */
-	space = strchr(buf, ' ');
-	if (space) {
-		match = MATCH_NONE;
-		if (!decode_path(buf, buf, &len)) {
-			if (!strcmp(buf, path))
-				match = MATCH_EXACT;
-			else if (!strncmp(buf, path, len)
-				 && (path[len] == '/' || !strcmp(buf, "/")))
-				match = MATCH_PARENT;
-		}
-
-		found = pop(fd, buf, bufsize, space - buf + 1);
-		if (found != 1)
-			return found;
-
-		switch (match) {
-		case MATCH_EXACT:
-			if (!strncmp(buf, "tmpfs", strlen("tmpfs")))
-				*outcome = OUTCOME_TMPFS_MOUNT;
-			else
-				*outcome = OUTCOME_NON_TMPFS_MOUNT;
-			break;
-
-		case MATCH_PARENT:
-			/* This mount obscures any previous ones. */
-			*outcome = OUTCOME_NOTHING_MOUNTED;
-			break;
-		}
-	}
-
-	return next(fd, buf, bufsize, '\n');
-}
-
-/* which_tmpdir is called only during early boot */
-static int checked_tmpdir = 0;
-
-/*
- * Look for a tmpfs mounted at /dev/shm.  I couldn't find a cleaner
- * way to do this than to parse /proc/mounts.  statfs will return the
- * same filesystem magic number and fs id for both /dev and /dev/shm
- * when they are both tmpfs, so you can't tell if they are different
- * filesystems.  Also, there seems to be no other way of finding the
- * mount point of a filesystem from within it.
- *
- * If a /dev/shm tmpfs entry is found, then we switch to using it.
- * Otherwise, we stay with the default /tmp.
- */
-static void which_tmpdir(void)
-{
-	int fd;
-	int found;
-	int outcome;
-	char *path;
-	char *buf;
-	size_t bufsize;
-
-	if (checked_tmpdir)
-		return;
-
-	checked_tmpdir = 1;
-
-	printf("Checking for tmpfs mount on /dev/shm...");
-
-	path = realpath("/dev/shm", NULL);
-	if (!path) {
-		printf("failed to check real path, errno = %d\n", errno);
-		return;
-	}
-	printf("%s...", path);
-
-	/*
-	 * The buffer needs to be able to fit the full octal-escaped path, a
-	 * space, and a trailing null in order to successfully decode it.
-	 */
-	bufsize = octal_encoded_length(path, " \t\n\\") + 2;
-
-	if (bufsize < 128)
-		bufsize = 128;
-
-	buf = malloc(bufsize);
-	if (!buf) {
-		printf("malloc failed, errno = %d\n", errno);
-		goto out;
-	}
-	buf[0] = '\0';
-
-	fd = open("/proc/mounts", O_RDONLY);
-	if (fd < 0) {
-		printf("failed to open /proc/mounts, errno = %d\n", errno);
-		goto out1;
-	}
-
-	outcome = OUTCOME_NOTHING_MOUNTED;
-	while (1) {
-		found = read_mount(fd, buf, bufsize, path, &outcome);
-		if (found != 1)
-			break;
-	}
-
-	if (found < 0) {
-		printf("read returned errno %d\n", -found);
+	printf("Checking if %s is on tmpfs...", dir);
+	if (statfs(dir, &st) < 0) {
+		printf("%s\n", strerror(errno));
+	} else if (st.f_type != TMPFS_MAGIC) {
+		printf("no\n");
 	} else {
-		switch (outcome) {
-		case OUTCOME_TMPFS_MOUNT:
-			printf("OK\n");
-			default_tmpdir = "/dev/shm";
-			break;
-
-		case OUTCOME_NON_TMPFS_MOUNT:
-			printf("not tmpfs\n");
-			break;
-
-		default:
-			printf("nothing mounted on /dev/shm\n");
-			break;
-		}
+		printf("OK\n");
+		return 0;
 	}
-
-	close(fd);
-out1:
-	free(buf);
-out:
-	free(path);
+	return -1;
 }
 
-static int __init make_tempfile(const char *template, char **out_tempname,
-				int do_unlink)
+/*
+ * Choose the tempdir to use. We want something on tmpfs so that our memory is
+ * not subject to the host's vm.dirty_ratio. If a tempdir is specified in the
+ * environment, we use that even if it's not on tmpfs, but we warn the user.
+ * Otherwise, we try common tmpfs locations, and if no tmpfs directory is found
+ * then we fall back to /tmp.
+ */
+static char * __init choose_tempdir(void)
+{
+	static const char * const vars[] = {
+		"TMPDIR",
+		"TMP",
+		"TEMP",
+		NULL
+	};
+	static const char fallback_dir[] = "/tmp";
+	static const char * const tmpfs_dirs[] = {
+		"/dev/shm",
+		fallback_dir,
+		NULL
+	};
+	int i;
+	const char *dir;
+
+	printf("Checking environment variables for a tempdir...");
+	for (i = 0; vars[i]; i++) {
+		dir = getenv(vars[i]);
+		if ((dir != NULL) && (*dir != '\0')) {
+			printf("%s\n", dir);
+			if (check_tmpfs(dir) >= 0)
+				goto done;
+			else
+				goto warn;
+		}
+	}
+	printf("none found\n");
+
+	for (i = 0; tmpfs_dirs[i]; i++) {
+		dir = tmpfs_dirs[i];
+		if (check_tmpfs(dir) >= 0)
+			goto done;
+	}
+
+	dir = fallback_dir;
+warn:
+	printf("Warning: tempdir %s is not on tmpfs\n", dir);
+done:
+	/* Make a copy since getenv results may not remain valid forever. */
+	return strdup(dir);
+}
+
+/*
+ * Create an unlinked tempfile in a suitable tempdir. template must be the
+ * basename part of the template with a leading '/'.
+ */
+static int __init make_tempfile(const char *template)
 {
 	char *tempname;
 	int fd;
 
-	which_tmpdir();
-	tempname = malloc(MAXPATHLEN);
+	if (tempdir == NULL) {
+		tempdir = choose_tempdir();
+		if (tempdir == NULL) {
+			fprintf(stderr, "Failed to choose tempdir: %s\n",
+				strerror(errno));
+			return -1;
+		}
+	}
+
+	tempname = malloc(strlen(tempdir) + strlen(template) + 1);
 	if (tempname == NULL)
 		return -1;
 
-	find_tempdir();
-	if ((tempdir == NULL) || (strlen(tempdir) >= MAXPATHLEN))
-		goto out;
-
-	if (template[0] != '/')
-		strcpy(tempname, tempdir);
-	else
-		tempname[0] = '\0';
-	strncat(tempname, template, MAXPATHLEN-1-strlen(tempname));
+	strcpy(tempname, tempdir);
+	strcat(tempname, template);
 	fd = mkstemp(tempname);
 	if (fd < 0) {
 		fprintf(stderr, "open - cannot create %s: %s\n", tempname,
 			strerror(errno));
 		goto out;
 	}
-	if (do_unlink && (unlink(tempname) < 0)) {
+	if (unlink(tempname) < 0) {
 		perror("unlink");
 		goto close;
 	}
-	if (out_tempname) {
-		*out_tempname = tempname;
-	} else
-		free(tempname);
+	free(tempname);
 	return fd;
 close:
 	close(fd);
@@ -351,14 +131,14 @@
 	return -1;
 }
 
-#define TEMPNAME_TEMPLATE "vm_file-XXXXXX"
+#define TEMPNAME_TEMPLATE "/vm_file-XXXXXX"
 
 static int __init create_tmp_file(unsigned long long len)
 {
 	int fd, err;
 	char zero;
 
-	fd = make_tempfile(TEMPNAME_TEMPLATE, NULL, 1);
+	fd = make_tempfile(TEMPNAME_TEMPLATE);
 	if (fd < 0)
 		exit(1);
 
@@ -402,7 +182,6 @@
 	return fd;
 }
 
-
 void __init check_tmpexec(void)
 {
 	void *addr;
@@ -410,14 +189,13 @@
 
 	addr = mmap(NULL, UM_KERN_PAGE_SIZE,
 		    PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE, fd, 0);
-	printf("Checking PROT_EXEC mmap in %s...",tempdir);
-	fflush(stdout);
+	printf("Checking PROT_EXEC mmap in %s...", tempdir);
 	if (addr == MAP_FAILED) {
 		err = errno;
-		perror("failed");
+		printf("%s\n", strerror(err));
 		close(fd);
 		if (err == EPERM)
-			printf("%s must be not mounted noexec\n",tempdir);
+			printf("%s must be not mounted noexec\n", tempdir);
 		exit(1);
 	}
 	printf("OK\n");
diff --git a/arch/x86/vdso/vdso-layout.lds.S b/arch/x86/vdso/vdso-layout.lds.S
index 2e263f3..9df017a 100644
--- a/arch/x86/vdso/vdso-layout.lds.S
+++ b/arch/x86/vdso/vdso-layout.lds.S
@@ -9,12 +9,9 @@
 #ifdef BUILD_VDSO32
 #include <asm/vdso32.h>
 
-	.hpet_sect : {
-		hpet_page = . - VDSO_OFFSET(VDSO_HPET_PAGE);
-	} :text :hpet_sect
+	hpet_page = . - VDSO_OFFSET(VDSO_HPET_PAGE);
 
-	.vvar_sect : {
-		vvar = . - VDSO_OFFSET(VDSO_VVAR_PAGE);
+	vvar = . - VDSO_OFFSET(VDSO_VVAR_PAGE);
 
 	/* Place all vvars at the offsets in asm/vvar.h. */
 #define EMIT_VVAR(name, offset) vvar_ ## name = vvar + offset;
@@ -22,7 +19,6 @@
 #include <asm/vvar.h>
 #undef __VVAR_KERNEL_LDS
 #undef EMIT_VVAR
-	} :text :vvar_sect
 #endif
 	. = SIZEOF_HEADERS;
 
@@ -61,7 +57,12 @@
 	 */
 	. = ALIGN(0x100);
 
-	.text		: { *(.text*) }			:text	=0x90909090
+	.text		: { *(.text*) }			:text	=0x90909090,
+
+	/*
+	 * The comma above works around a bug in gold:
+	 * https://sourceware.org/bugzilla/show_bug.cgi?id=16804
+	 */
 
 	/DISCARD/ : {
 		*(.discard)
@@ -84,8 +85,4 @@
 	dynamic		PT_DYNAMIC	FLAGS(4);		/* PF_R */
 	note		PT_NOTE		FLAGS(4);		/* PF_R */
 	eh_frame_hdr	PT_GNU_EH_FRAME;
-#ifdef BUILD_VDSO32
-	vvar_sect	PT_NULL		FLAGS(4);		/* PF_R */
-	hpet_sect	PT_NULL		FLAGS(4);		/* PF_R */
-#endif
 }
diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index 20e03a7..c270604 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -116,7 +116,7 @@
 
 config AHCI_IMX
 	tristate "Freescale i.MX AHCI SATA support"
-	depends on MFD_SYSCON
+	depends on MFD_SYSCON && (ARCH_MXC || COMPILE_TEST)
 	help
 	  This option enables support for the Freescale i.MX SoC's
 	  onboard AHCI SATA.
@@ -134,8 +134,7 @@
 
 config AHCI_XGENE
 	tristate "APM X-Gene 6.0Gbps AHCI SATA host controller support"
-	depends on ARM64 || COMPILE_TEST
-	select PHY_XGENE
+	depends on PHY_XGENE
 	help
 	 This option enables support for APM X-Gene SoC SATA host controller.
 
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 5a0bf8e..71e15b7 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1164,9 +1164,9 @@
 #endif
 
 static int ahci_init_interrupts(struct pci_dev *pdev, unsigned int n_ports,
-			 struct ahci_host_priv *hpriv)
+				struct ahci_host_priv *hpriv)
 {
-	int nvec;
+	int rc, nvec;
 
 	if (hpriv->flags & AHCI_HFLAG_NO_MSI)
 		goto intx;
@@ -1183,12 +1183,19 @@
 	if (nvec < n_ports)
 		goto single_msi;
 
-	nvec = pci_enable_msi_range(pdev, nvec, nvec);
-	if (nvec == -ENOSPC)
+	rc = pci_enable_msi_exact(pdev, nvec);
+	if (rc == -ENOSPC)
 		goto single_msi;
-	else if (nvec < 0)
+	else if (rc < 0)
 		goto intx;
 
+	/* fallback to single MSI mode if the controller enforced MRSM mode */
+	if (readl(hpriv->mmio + HOST_CTL) & HOST_MRSM) {
+		pci_disable_msi(pdev);
+		printk(KERN_INFO "ahci: MRSM is on, fallback to single MSI\n");
+		goto single_msi;
+	}
+
 	return nvec;
 
 single_msi:
@@ -1232,18 +1239,18 @@
 		return rc;
 
 	for (i = 0; i < host->n_ports; i++) {
-		const char* desc;
 		struct ahci_port_priv *pp = host->ports[i]->private_data;
 
-		/* pp is NULL for dummy ports */
-		if (pp)
-			desc = pp->irq_desc;
-		else
-			desc = dev_driver_string(host->dev);
+		/* Do not receive interrupts sent by dummy ports */
+		if (!pp) {
+			disable_irq(irq + i);
+			continue;
+		}
 
-		rc = devm_request_threaded_irq(host->dev,
-			irq + i, ahci_hw_interrupt, ahci_thread_fn, IRQF_SHARED,
-			desc, host->ports[i]);
+		rc = devm_request_threaded_irq(host->dev, irq + i,
+					       ahci_hw_interrupt,
+					       ahci_thread_fn, IRQF_SHARED,
+					       pp->irq_desc, host->ports[i]);
 		if (rc)
 			goto out_free_irqs;
 	}
diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h
index 51af275..b5eb886 100644
--- a/drivers/ata/ahci.h
+++ b/drivers/ata/ahci.h
@@ -94,6 +94,7 @@
 	/* HOST_CTL bits */
 	HOST_RESET		= (1 << 0),  /* reset controller; self-clear */
 	HOST_IRQ_EN		= (1 << 1),  /* global IRQ enable */
+	HOST_MRSM		= (1 << 2),  /* MSI Revert to Single Message */
 	HOST_AHCI_EN		= (1 << 31), /* AHCI enabled */
 
 	/* HOST_CAP bits */
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index c19734d..943cc8b 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4224,8 +4224,10 @@
 	{ "PIONEER DVD-RW  DVR-216D",	NULL,	ATA_HORKAGE_NOSETXFER },
 
 	/* devices that don't properly handle queued TRIM commands */
-	{ "Micron_M500*",		NULL,	ATA_HORKAGE_NO_NCQ_TRIM, },
-	{ "Crucial_CT???M500SSD*",	NULL,	ATA_HORKAGE_NO_NCQ_TRIM, },
+	{ "Micron_M500*",		"MU0[1-4]*",	ATA_HORKAGE_NO_NCQ_TRIM, },
+	{ "Crucial_CT???M500SSD*",	"MU0[1-4]*",	ATA_HORKAGE_NO_NCQ_TRIM, },
+	{ "Micron_M550*",		NULL,		ATA_HORKAGE_NO_NCQ_TRIM, },
+	{ "Crucial_CT???M550SSD*",	NULL,		ATA_HORKAGE_NO_NCQ_TRIM, },
 
 	/*
 	 * Some WD SATA-I drives spin up and down erratically when the link
@@ -4792,21 +4794,26 @@
 static struct ata_queued_cmd *ata_qc_new(struct ata_port *ap)
 {
 	struct ata_queued_cmd *qc = NULL;
-	unsigned int i;
+	unsigned int i, tag;
 
 	/* no command while frozen */
 	if (unlikely(ap->pflags & ATA_PFLAG_FROZEN))
 		return NULL;
 
-	/* the last tag is reserved for internal command. */
-	for (i = 0; i < ATA_MAX_QUEUE - 1; i++)
-		if (!test_and_set_bit(i, &ap->qc_allocated)) {
-			qc = __ata_qc_from_tag(ap, i);
+	for (i = 0; i < ATA_MAX_QUEUE; i++) {
+		tag = (i + ap->last_tag + 1) % ATA_MAX_QUEUE;
+
+		/* the last tag is reserved for internal command. */
+		if (tag == ATA_TAG_INTERNAL)
+			continue;
+
+		if (!test_and_set_bit(tag, &ap->qc_allocated)) {
+			qc = __ata_qc_from_tag(ap, tag);
+			qc->tag = tag;
+			ap->last_tag = tag;
 			break;
 		}
-
-	if (qc)
-		qc->tag = i;
+	}
 
 	return qc;
 }
diff --git a/drivers/ata/pata_arasan_cf.c b/drivers/ata/pata_arasan_cf.c
index 6fac524..4edb1a8 100644
--- a/drivers/ata/pata_arasan_cf.c
+++ b/drivers/ata/pata_arasan_cf.c
@@ -898,9 +898,12 @@
 
 	cf_card_detect(acdev, 0);
 
-	return ata_host_activate(host, acdev->irq, irq_handler, 0,
-			&arasan_cf_sht);
+	ret = ata_host_activate(host, acdev->irq, irq_handler, 0,
+				&arasan_cf_sht);
+	if (!ret)
+		return 0;
 
+	cf_exit(acdev);
 free_clk:
 	clk_put(acdev->clk);
 	return ret;
diff --git a/drivers/ata/pata_at91.c b/drivers/ata/pata_at91.c
index e9c8727..8a66f23 100644
--- a/drivers/ata/pata_at91.c
+++ b/drivers/ata/pata_at91.c
@@ -407,12 +407,13 @@
 
 	host->private_data = info;
 
-	return ata_host_activate(host, gpio_is_valid(irq) ? gpio_to_irq(irq) : 0,
-			gpio_is_valid(irq) ? ata_sff_interrupt : NULL,
-			irq_flags, &pata_at91_sht);
+	ret = ata_host_activate(host, gpio_is_valid(irq) ? gpio_to_irq(irq) : 0,
+				gpio_is_valid(irq) ? ata_sff_interrupt : NULL,
+				irq_flags, &pata_at91_sht);
+	if (ret)
+		goto err_put;
 
-	if (!ret)
-		return 0;
+	return 0;
 
 err_put:
 	clk_put(info->mck);
diff --git a/drivers/ata/pata_samsung_cf.c b/drivers/ata/pata_samsung_cf.c
index a79566d..0610e78 100644
--- a/drivers/ata/pata_samsung_cf.c
+++ b/drivers/ata/pata_samsung_cf.c
@@ -594,9 +594,13 @@
 
 	platform_set_drvdata(pdev, host);
 
-	return ata_host_activate(host, info->irq,
-			info->irq ? pata_s3c_irq : NULL,
-			0, &pata_s3c_sht);
+	ret = ata_host_activate(host, info->irq,
+				info->irq ? pata_s3c_irq : NULL,
+				0, &pata_s3c_sht);
+	if (ret)
+		goto stop_clk;
+
+	return 0;
 
 stop_clk:
 	clk_disable(info->clk);
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index bf0f8b4..401add2 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -233,7 +233,7 @@
 {
 	struct gpio_chip *chip = acpi_gpio->chip;
 
-	if (!chip->dev || !chip->to_irq)
+	if (!chip->to_irq)
 		return;
 
 	INIT_LIST_HEAD(&acpi_gpio->events);
@@ -253,7 +253,7 @@
 	struct acpi_gpio_event *event, *ep;
 	struct gpio_chip *chip = acpi_gpio->chip;
 
-	if (!chip->dev || !chip->to_irq)
+	if (!chip->to_irq)
 		return;
 
 	list_for_each_entry_safe_reverse(event, ep, &acpi_gpio->events, node) {
@@ -451,7 +451,7 @@
 		if (function == ACPI_WRITE)
 			gpiod_set_raw_value(desc, !!((1 << i) & *value));
 		else
-			*value |= gpiod_get_raw_value(desc) << i;
+			*value |= (u64)gpiod_get_raw_value(desc) << i;
 	}
 
 out:
@@ -501,6 +501,9 @@
 	acpi_handle handle;
 	acpi_status status;
 
+	if (!chip || !chip->dev)
+		return;
+
 	handle = ACPI_HANDLE(chip->dev);
 	if (!handle)
 		return;
@@ -531,6 +534,9 @@
 	acpi_handle handle;
 	acpi_status status;
 
+	if (!chip || !chip->dev)
+		return;
+
 	handle = ACPI_HANDLE(chip->dev);
 	if (!handle)
 		return;
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 761013f..f48817d 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1387,8 +1387,8 @@
 {
 	struct gpio_chip *chip = d->host_data;
 
-	irq_set_chip_and_handler(irq, chip->irqchip, chip->irq_handler);
 	irq_set_chip_data(irq, chip);
+	irq_set_chip_and_handler(irq, chip->irqchip, chip->irq_handler);
 #ifdef CONFIG_ARM
 	set_irq_flags(irq, IRQF_VALID);
 #else
diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c
index 1593652..bc0119f 100644
--- a/drivers/gpu/drm/radeon/atombios_dp.c
+++ b/drivers/gpu/drm/radeon/atombios_dp.c
@@ -209,6 +209,7 @@
 {
 	int ret;
 
+	radeon_connector->ddc_bus->rec.hpd = radeon_connector->hpd.hpd;
 	radeon_connector->ddc_bus->aux.dev = radeon_connector->base.kdev;
 	radeon_connector->ddc_bus->aux.transfer = radeon_dp_aux_transfer;
 	ret = drm_dp_aux_register_i2c_bus(&radeon_connector->ddc_bus->aux);
diff --git a/drivers/gpu/drm/radeon/cik_sdma.c b/drivers/gpu/drm/radeon/cik_sdma.c
index 89b4afa..f7e46cf 100644
--- a/drivers/gpu/drm/radeon/cik_sdma.c
+++ b/drivers/gpu/drm/radeon/cik_sdma.c
@@ -597,7 +597,7 @@
 	tmp = 0xCAFEDEAD;
 	writel(tmp, ptr);
 
-	r = radeon_ring_lock(rdev, ring, 4);
+	r = radeon_ring_lock(rdev, ring, 5);
 	if (r) {
 		DRM_ERROR("radeon: dma failed to lock ring %d (%d).\n", ring->idx, r);
 		return r;
diff --git a/drivers/gpu/drm/radeon/r600_dpm.c b/drivers/gpu/drm/radeon/r600_dpm.c
index cbf7e32..9c61b74 100644
--- a/drivers/gpu/drm/radeon/r600_dpm.c
+++ b/drivers/gpu/drm/radeon/r600_dpm.c
@@ -158,16 +158,18 @@
 	u32 line_time_us, vblank_lines;
 	u32 vblank_time_us = 0xffffffff; /* if the displays are off, vblank time is max */
 
-	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
-		radeon_crtc = to_radeon_crtc(crtc);
-		if (crtc->enabled && radeon_crtc->enabled && radeon_crtc->hw_mode.clock) {
-			line_time_us = (radeon_crtc->hw_mode.crtc_htotal * 1000) /
-				radeon_crtc->hw_mode.clock;
-			vblank_lines = radeon_crtc->hw_mode.crtc_vblank_end -
-				radeon_crtc->hw_mode.crtc_vdisplay +
-				(radeon_crtc->v_border * 2);
-			vblank_time_us = vblank_lines * line_time_us;
-			break;
+	if (rdev->num_crtc && rdev->mode_info.mode_config_initialized) {
+		list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+			radeon_crtc = to_radeon_crtc(crtc);
+			if (crtc->enabled && radeon_crtc->enabled && radeon_crtc->hw_mode.clock) {
+				line_time_us = (radeon_crtc->hw_mode.crtc_htotal * 1000) /
+					radeon_crtc->hw_mode.clock;
+				vblank_lines = radeon_crtc->hw_mode.crtc_vblank_end -
+					radeon_crtc->hw_mode.crtc_vdisplay +
+					(radeon_crtc->v_border * 2);
+				vblank_time_us = vblank_lines * line_time_us;
+				break;
+			}
 		}
 	}
 
@@ -181,14 +183,15 @@
 	struct radeon_crtc *radeon_crtc;
 	u32 vrefresh = 0;
 
-	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
-		radeon_crtc = to_radeon_crtc(crtc);
-		if (crtc->enabled && radeon_crtc->enabled && radeon_crtc->hw_mode.clock) {
-			vrefresh = radeon_crtc->hw_mode.vrefresh;
-			break;
+	if (rdev->num_crtc && rdev->mode_info.mode_config_initialized) {
+		list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+			radeon_crtc = to_radeon_crtc(crtc);
+			if (crtc->enabled && radeon_crtc->enabled && radeon_crtc->hw_mode.clock) {
+				vrefresh = radeon_crtc->hw_mode.vrefresh;
+				break;
+			}
 		}
 	}
-
 	return vrefresh;
 }
 
diff --git a/drivers/gpu/drm/radeon/radeon_atpx_handler.c b/drivers/gpu/drm/radeon/radeon_atpx_handler.c
index dedea72..a9fb0d0 100644
--- a/drivers/gpu/drm/radeon/radeon_atpx_handler.c
+++ b/drivers/gpu/drm/radeon/radeon_atpx_handler.c
@@ -528,6 +528,13 @@
 		has_atpx |= (radeon_atpx_pci_probe_handle(pdev) == true);
 	}
 
+	/* some newer PX laptops mark the dGPU as a non-VGA display device */
+	while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_OTHER << 8, pdev)) != NULL) {
+		vga_count++;
+
+		has_atpx |= (radeon_atpx_pci_probe_handle(pdev) == true);
+	}
+
 	if (has_atpx && vga_count == 2) {
 		acpi_get_name(radeon_atpx_priv.atpx.handle, ACPI_FULL_PATHNAME, &buffer);
 		printk(KERN_INFO "VGA switcheroo: detected switching method %s handle\n",
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 2f7cbb9..8d99d5e 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -840,6 +840,38 @@
 }
 
 /**
+ * avivo_get_fb_ref_div - feedback and ref divider calculation
+ *
+ * @nom: nominator
+ * @den: denominator
+ * @post_div: post divider
+ * @fb_div_max: feedback divider maximum
+ * @ref_div_max: reference divider maximum
+ * @fb_div: resulting feedback divider
+ * @ref_div: resulting reference divider
+ *
+ * Calculate feedback and reference divider for a given post divider. Makes
+ * sure we stay within the limits.
+ */
+static void avivo_get_fb_ref_div(unsigned nom, unsigned den, unsigned post_div,
+				 unsigned fb_div_max, unsigned ref_div_max,
+				 unsigned *fb_div, unsigned *ref_div)
+{
+	/* limit reference * post divider to a maximum */
+	ref_div_max = min(210 / post_div, ref_div_max);
+
+	/* get matching reference and feedback divider */
+	*ref_div = min(max(DIV_ROUND_CLOSEST(den, post_div), 1u), ref_div_max);
+	*fb_div = DIV_ROUND_CLOSEST(nom * *ref_div * post_div, den);
+
+	/* limit fb divider to its maximum */
+        if (*fb_div > fb_div_max) {
+		*ref_div = DIV_ROUND_CLOSEST(*ref_div * fb_div_max, *fb_div);
+		*fb_div = fb_div_max;
+	}
+}
+
+/**
  * radeon_compute_pll_avivo - compute PLL paramaters
  *
  * @pll: information about the PLL
@@ -860,6 +892,9 @@
 			      u32 *ref_div_p,
 			      u32 *post_div_p)
 {
+	unsigned target_clock = pll->flags & RADEON_PLL_USE_FRAC_FB_DIV ?
+		freq : freq / 10;
+
 	unsigned fb_div_min, fb_div_max, fb_div;
 	unsigned post_div_min, post_div_max, post_div;
 	unsigned ref_div_min, ref_div_max, ref_div;
@@ -880,14 +915,18 @@
 		ref_div_min = pll->reference_div;
 	else
 		ref_div_min = pll->min_ref_div;
-	ref_div_max = pll->max_ref_div;
+
+	if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV &&
+	    pll->flags & RADEON_PLL_USE_REF_DIV)
+		ref_div_max = pll->reference_div;
+	else
+		ref_div_max = pll->max_ref_div;
 
 	/* determine allowed post divider range */
 	if (pll->flags & RADEON_PLL_USE_POST_DIV) {
 		post_div_min = pll->post_div;
 		post_div_max = pll->post_div;
 	} else {
-		unsigned target_clock = freq / 10;
 		unsigned vco_min, vco_max;
 
 		if (pll->flags & RADEON_PLL_IS_LCD) {
@@ -898,6 +937,11 @@
 			vco_max = pll->pll_out_max;
 		}
 
+		if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
+			vco_min *= 10;
+			vco_max *= 10;
+		}
+
 		post_div_min = vco_min / target_clock;
 		if ((target_clock * post_div_min) < vco_min)
 			++post_div_min;
@@ -912,7 +956,7 @@
 	}
 
 	/* represent the searched ratio as fractional number */
-	nom = pll->flags & RADEON_PLL_USE_FRAC_FB_DIV ? freq : freq / 10;
+	nom = target_clock;
 	den = pll->reference_freq;
 
 	/* reduce the numbers to a simpler ratio */
@@ -926,7 +970,12 @@
 	diff_best = ~0;
 
 	for (post_div = post_div_min; post_div <= post_div_max; ++post_div) {
-		unsigned diff = abs(den - den / post_div * post_div);
+		unsigned diff;
+		avivo_get_fb_ref_div(nom, den, post_div, fb_div_max,
+				     ref_div_max, &fb_div, &ref_div);
+		diff = abs(target_clock - (pll->reference_freq * fb_div) /
+			(ref_div * post_div));
+
 		if (diff < diff_best || (diff == diff_best &&
 		    !(pll->flags & RADEON_PLL_PREFER_MINM_OVER_MAXP))) {
 
@@ -936,28 +985,9 @@
 	}
 	post_div = post_div_best;
 
-	/* limit reference * post divider to a maximum */
-	ref_div_max = min(210 / post_div, ref_div_max);
-
-	/* get matching reference and feedback divider */
-	ref_div = max(DIV_ROUND_CLOSEST(den, post_div), 1u);
-	fb_div = DIV_ROUND_CLOSEST(nom * ref_div * post_div, den);
-
-	/* we're almost done, but reference and feedback
-	   divider might be to large now */
-
-	nom = fb_div;
-	den = ref_div;
-
-        if (fb_div > fb_div_max) {
-		ref_div = DIV_ROUND_CLOSEST(den * fb_div_max, nom);
-		fb_div = fb_div_max;
-	}
-
-	if (ref_div > ref_div_max) {
-		ref_div = ref_div_max;
-		fb_div = DIV_ROUND_CLOSEST(nom * ref_div_max, den);
-	}
+	/* get the feedback and reference divider for the optimal value */
+	avivo_get_fb_ref_div(nom, den, post_div, fb_div_max, ref_div_max,
+			     &fb_div, &ref_div);
 
 	/* reduce the numbers to a simpler ratio once more */
 	/* this also makes sure that the reference divider is large enough */
@@ -979,7 +1009,7 @@
 	*post_div_p = post_div;
 
 	DRM_DEBUG_KMS("%d - %d, pll dividers - fb: %d.%d ref: %d, post %d\n",
-		      freq, *dot_clock_p, *fb_div_p, *frac_fb_div_p,
+		      freq, *dot_clock_p * 10, *fb_div_p, *frac_fb_div_p,
 		      ref_div, post_div);
 }
 
diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
index fb3d13f..0cc47f1 100644
--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -107,11 +107,9 @@
 		flags |= RADEON_IS_PCI;
 	}
 
-	if (radeon_runtime_pm == 1)
-		flags |= RADEON_IS_PX;
-	else if ((radeon_runtime_pm == -1) &&
-		 radeon_has_atpx() &&
-		 ((flags & RADEON_IS_IGP) == 0))
+	if ((radeon_runtime_pm != 0) &&
+	    radeon_has_atpx() &&
+	    ((flags & RADEON_IS_IGP) == 0))
 		flags |= RADEON_IS_PX;
 
 	/* radeon_device_init should report only fatal error
diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c
index ee738a5..6fac8ef 100644
--- a/drivers/gpu/drm/radeon/radeon_pm.c
+++ b/drivers/gpu/drm/radeon/radeon_pm.c
@@ -603,7 +603,6 @@
 static int radeon_hwmon_init(struct radeon_device *rdev)
 {
 	int err = 0;
-	struct device *hwmon_dev;
 
 	switch (rdev->pm.int_thermal_type) {
 	case THERMAL_TYPE_RV6XX:
@@ -616,11 +615,11 @@
 	case THERMAL_TYPE_KV:
 		if (rdev->asic->pm.get_temperature == NULL)
 			return err;
-		hwmon_dev = hwmon_device_register_with_groups(rdev->dev,
-							      "radeon", rdev,
-							      hwmon_groups);
-		if (IS_ERR(hwmon_dev)) {
-			err = PTR_ERR(hwmon_dev);
+		rdev->pm.int_hwmon_dev = hwmon_device_register_with_groups(rdev->dev,
+									   "radeon", rdev,
+									   hwmon_groups);
+		if (IS_ERR(rdev->pm.int_hwmon_dev)) {
+			err = PTR_ERR(rdev->pm.int_hwmon_dev);
 			dev_err(rdev->dev,
 				"Unable to register hwmon device: %d\n", err);
 		}
@@ -632,6 +631,12 @@
 	return err;
 }
 
+static void radeon_hwmon_fini(struct radeon_device *rdev)
+{
+	if (rdev->pm.int_hwmon_dev)
+		hwmon_device_unregister(rdev->pm.int_hwmon_dev);
+}
+
 static void radeon_dpm_thermal_work_handler(struct work_struct *work)
 {
 	struct radeon_device *rdev =
@@ -1257,6 +1262,7 @@
 	case CHIP_RV670:
 	case CHIP_RS780:
 	case CHIP_RS880:
+	case CHIP_RV770:
 	case CHIP_BARTS:
 	case CHIP_TURKS:
 	case CHIP_CAICOS:
@@ -1273,7 +1279,6 @@
 		else
 			rdev->pm.pm_method = PM_METHOD_PROFILE;
 		break;
-	case CHIP_RV770:
 	case CHIP_RV730:
 	case CHIP_RV710:
 	case CHIP_RV740:
@@ -1353,6 +1358,8 @@
 		device_remove_file(rdev->dev, &dev_attr_power_method);
 	}
 
+	radeon_hwmon_fini(rdev);
+
 	if (rdev->pm.power_state)
 		kfree(rdev->pm.power_state);
 }
@@ -1372,6 +1379,8 @@
 	}
 	radeon_dpm_fini(rdev);
 
+	radeon_hwmon_fini(rdev);
+
 	if (rdev->pm.power_state)
 		kfree(rdev->pm.power_state);
 }
@@ -1397,12 +1406,14 @@
 
 	rdev->pm.active_crtcs = 0;
 	rdev->pm.active_crtc_count = 0;
-	list_for_each_entry(crtc,
-		&ddev->mode_config.crtc_list, head) {
-		radeon_crtc = to_radeon_crtc(crtc);
-		if (radeon_crtc->enabled) {
-			rdev->pm.active_crtcs |= (1 << radeon_crtc->crtc_id);
-			rdev->pm.active_crtc_count++;
+	if (rdev->num_crtc && rdev->mode_info.mode_config_initialized) {
+		list_for_each_entry(crtc,
+				    &ddev->mode_config.crtc_list, head) {
+			radeon_crtc = to_radeon_crtc(crtc);
+			if (radeon_crtc->enabled) {
+				rdev->pm.active_crtcs |= (1 << radeon_crtc->crtc_id);
+				rdev->pm.active_crtc_count++;
+			}
 		}
 	}
 
@@ -1469,12 +1480,14 @@
 	/* update active crtc counts */
 	rdev->pm.dpm.new_active_crtcs = 0;
 	rdev->pm.dpm.new_active_crtc_count = 0;
-	list_for_each_entry(crtc,
-		&ddev->mode_config.crtc_list, head) {
-		radeon_crtc = to_radeon_crtc(crtc);
-		if (crtc->enabled) {
-			rdev->pm.dpm.new_active_crtcs |= (1 << radeon_crtc->crtc_id);
-			rdev->pm.dpm.new_active_crtc_count++;
+	if (rdev->num_crtc && rdev->mode_info.mode_config_initialized) {
+		list_for_each_entry(crtc,
+				    &ddev->mode_config.crtc_list, head) {
+			radeon_crtc = to_radeon_crtc(crtc);
+			if (crtc->enabled) {
+				rdev->pm.dpm.new_active_crtcs |= (1 << radeon_crtc->crtc_id);
+				rdev->pm.dpm.new_active_crtc_count++;
+			}
 		}
 	}
 
diff --git a/drivers/input/misc/da9055_onkey.c b/drivers/input/misc/da9055_onkey.c
index 4b11ede..4765799 100644
--- a/drivers/input/misc/da9055_onkey.c
+++ b/drivers/input/misc/da9055_onkey.c
@@ -109,7 +109,6 @@
 
 	INIT_DELAYED_WORK(&onkey->work, da9055_onkey_work);
 
-	irq = regmap_irq_get_virq(da9055->irq_data, irq);
 	err = request_threaded_irq(irq, NULL, da9055_onkey_irq,
 				   IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
 				   "ONKEY", onkey);
diff --git a/drivers/input/misc/soc_button_array.c b/drivers/input/misc/soc_button_array.c
index 08ead2a..20c80f5 100644
--- a/drivers/input/misc/soc_button_array.c
+++ b/drivers/input/misc/soc_button_array.c
@@ -169,6 +169,7 @@
 				soc_button_remove(pdev);
 				return error;
 			}
+			continue;
 		}
 
 		priv->children[i] = pd;
diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
index ef1cf52..088d354 100644
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -1353,6 +1353,7 @@
 		case 6:
 		case 7:
 		case 8:
+		case 9:
 			etd->hw_version = 4;
 			break;
 		default:
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index d8d49d1..ef9f491 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -117,6 +117,44 @@
 }
 
 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
+/* This list has been kindly provided by Synaptics. */
+static const char * const topbuttonpad_pnp_ids[] = {
+	"LEN0017",
+	"LEN0018",
+	"LEN0019",
+	"LEN0023",
+	"LEN002A",
+	"LEN002B",
+	"LEN002C",
+	"LEN002D",
+	"LEN002E",
+	"LEN0033", /* Helix */
+	"LEN0034", /* T431s, T540, X1 Carbon 2nd */
+	"LEN0035", /* X240 */
+	"LEN0036", /* T440 */
+	"LEN0037",
+	"LEN0038",
+	"LEN0041",
+	"LEN0042", /* Yoga */
+	"LEN0045",
+	"LEN0046",
+	"LEN0047",
+	"LEN0048",
+	"LEN0049",
+	"LEN2000",
+	"LEN2001",
+	"LEN2002",
+	"LEN2003",
+	"LEN2004", /* L440 */
+	"LEN2005",
+	"LEN2006",
+	"LEN2007",
+	"LEN2008",
+	"LEN2009",
+	"LEN200A",
+	"LEN200B",
+	NULL
+};
 
 /*****************************************************************************
  *	Synaptics communications functions
@@ -1255,8 +1293,10 @@
 	input_abs_set_res(dev, y_code, priv->y_res);
 }
 
-static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
+static void set_input_params(struct psmouse *psmouse,
+			     struct synaptics_data *priv)
 {
+	struct input_dev *dev = psmouse->dev;
 	int i;
 
 	/* Things that apply to both modes */
@@ -1325,6 +1365,17 @@
 
 	if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
 		__set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
+		/* See if this buttonpad has a top button area */
+		if (!strncmp(psmouse->ps2dev.serio->firmware_id, "PNP:", 4)) {
+			for (i = 0; topbuttonpad_pnp_ids[i]; i++) {
+				if (strstr(psmouse->ps2dev.serio->firmware_id,
+					   topbuttonpad_pnp_ids[i])) {
+					__set_bit(INPUT_PROP_TOPBUTTONPAD,
+						  dev->propbit);
+					break;
+				}
+			}
+		}
 		/* Clickpads report only left button */
 		__clear_bit(BTN_RIGHT, dev->keybit);
 		__clear_bit(BTN_MIDDLE, dev->keybit);
@@ -1515,6 +1566,14 @@
 		.driver_data = (int []){1232, 5710, 1156, 4696},
 	},
 	{
+		/* Lenovo ThinkPad T431s */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T431"),
+		},
+		.driver_data = (int []){1024, 5112, 2024, 4832},
+	},
+	{
 		/* Lenovo ThinkPad T440s */
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
@@ -1523,6 +1582,14 @@
 		.driver_data = (int []){1024, 5112, 2024, 4832},
 	},
 	{
+		/* Lenovo ThinkPad L440 */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L440"),
+		},
+		.driver_data = (int []){1024, 5112, 2024, 4832},
+	},
+	{
 		/* Lenovo ThinkPad T540p */
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
@@ -1530,6 +1597,32 @@
 		},
 		.driver_data = (int []){1024, 5056, 2058, 4832},
 	},
+	{
+		/* Lenovo ThinkPad L540 */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L540"),
+		},
+		.driver_data = (int []){1024, 5112, 2024, 4832},
+	},
+	{
+		/* Lenovo Yoga S1 */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_EXACT_MATCH(DMI_PRODUCT_VERSION,
+					"ThinkPad S1 Yoga"),
+		},
+		.driver_data = (int []){1232, 5710, 1156, 4696},
+	},
+	{
+		/* Lenovo ThinkPad X1 Carbon Haswell (3rd generation) */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_VERSION,
+					"ThinkPad X1 Carbon 2nd"),
+		},
+		.driver_data = (int []){1024, 5112, 2024, 4832},
+	},
 #endif
 	{ }
 };
@@ -1593,7 +1686,7 @@
 		     priv->capabilities, priv->ext_cap, priv->ext_cap_0c,
 		     priv->board_id, priv->firmware_id);
 
-	set_input_params(psmouse->dev, priv);
+	set_input_params(psmouse, priv);
 
 	/*
 	 * Encode touchpad model so that it can be used to set
diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h
index 0ec9abb..381b20d 100644
--- a/drivers/input/serio/i8042-x86ia64io.h
+++ b/drivers/input/serio/i8042-x86ia64io.h
@@ -702,6 +702,17 @@
 static char i8042_pnp_kbd_name[32];
 static char i8042_pnp_aux_name[32];
 
+static void i8042_pnp_id_to_string(struct pnp_id *id, char *dst, int dst_size)
+{
+	strlcpy(dst, "PNP:", dst_size);
+
+	while (id) {
+		strlcat(dst, " ", dst_size);
+		strlcat(dst, id->id, dst_size);
+		id = id->next;
+	}
+}
+
 static int i8042_pnp_kbd_probe(struct pnp_dev *dev, const struct pnp_device_id *did)
 {
 	if (pnp_port_valid(dev, 0) && pnp_port_len(dev, 0) == 1)
@@ -718,6 +729,8 @@
 		strlcat(i8042_pnp_kbd_name, ":", sizeof(i8042_pnp_kbd_name));
 		strlcat(i8042_pnp_kbd_name, pnp_dev_name(dev), sizeof(i8042_pnp_kbd_name));
 	}
+	i8042_pnp_id_to_string(dev->id, i8042_kbd_firmware_id,
+			       sizeof(i8042_kbd_firmware_id));
 
 	/* Keyboard ports are always supposed to be wakeup-enabled */
 	device_set_wakeup_enable(&dev->dev, true);
@@ -742,6 +755,8 @@
 		strlcat(i8042_pnp_aux_name, ":", sizeof(i8042_pnp_aux_name));
 		strlcat(i8042_pnp_aux_name, pnp_dev_name(dev), sizeof(i8042_pnp_aux_name));
 	}
+	i8042_pnp_id_to_string(dev->id, i8042_aux_firmware_id,
+			       sizeof(i8042_aux_firmware_id));
 
 	i8042_pnp_aux_devices++;
 	return 0;
diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
index 020053f..3807c3e 100644
--- a/drivers/input/serio/i8042.c
+++ b/drivers/input/serio/i8042.c
@@ -87,6 +87,8 @@
 #endif
 
 static bool i8042_bypass_aux_irq_test;
+static char i8042_kbd_firmware_id[128];
+static char i8042_aux_firmware_id[128];
 
 #include "i8042.h"
 
@@ -1218,6 +1220,8 @@
 	serio->dev.parent	= &i8042_platform_device->dev;
 	strlcpy(serio->name, "i8042 KBD port", sizeof(serio->name));
 	strlcpy(serio->phys, I8042_KBD_PHYS_DESC, sizeof(serio->phys));
+	strlcpy(serio->firmware_id, i8042_kbd_firmware_id,
+		sizeof(serio->firmware_id));
 
 	port->serio = serio;
 	port->irq = I8042_KBD_IRQ;
@@ -1244,6 +1248,8 @@
 	if (idx < 0) {
 		strlcpy(serio->name, "i8042 AUX port", sizeof(serio->name));
 		strlcpy(serio->phys, I8042_AUX_PHYS_DESC, sizeof(serio->phys));
+		strlcpy(serio->firmware_id, i8042_aux_firmware_id,
+			sizeof(serio->firmware_id));
 		serio->close = i8042_port_close;
 	} else {
 		snprintf(serio->name, sizeof(serio->name), "i8042 AUX%d port", idx);
diff --git a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c
index 8f4c4ab..b29134d 100644
--- a/drivers/input/serio/serio.c
+++ b/drivers/input/serio/serio.c
@@ -451,6 +451,13 @@
 	return retval;
 }
 
+static ssize_t firmware_id_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct serio *serio = to_serio_port(dev);
+
+	return sprintf(buf, "%s\n", serio->firmware_id);
+}
+
 static DEVICE_ATTR_RO(type);
 static DEVICE_ATTR_RO(proto);
 static DEVICE_ATTR_RO(id);
@@ -473,12 +480,14 @@
 static DEVICE_ATTR_WO(drvctl);
 static DEVICE_ATTR(description, S_IRUGO, serio_show_description, NULL);
 static DEVICE_ATTR(bind_mode, S_IWUSR | S_IRUGO, serio_show_bind_mode, serio_set_bind_mode);
+static DEVICE_ATTR_RO(firmware_id);
 
 static struct attribute *serio_device_attrs[] = {
 	&dev_attr_modalias.attr,
 	&dev_attr_description.attr,
 	&dev_attr_drvctl.attr,
 	&dev_attr_bind_mode.attr,
+	&dev_attr_firmware_id.attr,
 	NULL
 };
 
@@ -921,9 +930,14 @@
 	SERIO_ADD_UEVENT_VAR("SERIO_PROTO=%02x", serio->id.proto);
 	SERIO_ADD_UEVENT_VAR("SERIO_ID=%02x", serio->id.id);
 	SERIO_ADD_UEVENT_VAR("SERIO_EXTRA=%02x", serio->id.extra);
+
 	SERIO_ADD_UEVENT_VAR("MODALIAS=serio:ty%02Xpr%02Xid%02Xex%02X",
 				serio->id.type, serio->id.proto, serio->id.id, serio->id.extra);
 
+	if (serio->firmware_id[0])
+		SERIO_ADD_UEVENT_VAR("SERIO_FIRMWARE_ID=%s",
+				     serio->firmware_id);
+
 	return 0;
 }
 #undef SERIO_ADD_UEVENT_VAR
diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c
index b16ebef..611fc39 100644
--- a/drivers/input/tablet/wacom_sys.c
+++ b/drivers/input/tablet/wacom_sys.c
@@ -22,23 +22,18 @@
 #define HID_USAGE_PAGE_DIGITIZER	0x0d
 #define HID_USAGE_PAGE_DESKTOP		0x01
 #define HID_USAGE			0x09
-#define HID_USAGE_X			0x30
-#define HID_USAGE_Y			0x31
-#define HID_USAGE_X_TILT		0x3d
-#define HID_USAGE_Y_TILT		0x3e
-#define HID_USAGE_FINGER		0x22
-#define HID_USAGE_STYLUS		0x20
-#define HID_USAGE_CONTACTMAX		0x55
+#define HID_USAGE_X			((HID_USAGE_PAGE_DESKTOP << 16) | 0x30)
+#define HID_USAGE_Y			((HID_USAGE_PAGE_DESKTOP << 16) | 0x31)
+#define HID_USAGE_PRESSURE		((HID_USAGE_PAGE_DIGITIZER << 16) | 0x30)
+#define HID_USAGE_X_TILT		((HID_USAGE_PAGE_DIGITIZER << 16) | 0x3d)
+#define HID_USAGE_Y_TILT		((HID_USAGE_PAGE_DIGITIZER << 16) | 0x3e)
+#define HID_USAGE_FINGER		((HID_USAGE_PAGE_DIGITIZER << 16) | 0x22)
+#define HID_USAGE_STYLUS		((HID_USAGE_PAGE_DIGITIZER << 16) | 0x20)
+#define HID_USAGE_CONTACTMAX		((HID_USAGE_PAGE_DIGITIZER << 16) | 0x55)
 #define HID_COLLECTION			0xa1
 #define HID_COLLECTION_LOGICAL		0x02
 #define HID_COLLECTION_END		0xc0
 
-enum {
-	WCM_UNDEFINED = 0,
-	WCM_DESKTOP,
-	WCM_DIGITIZER,
-};
-
 struct hid_descriptor {
 	struct usb_descriptor_header header;
 	__le16   bcdHID;
@@ -305,7 +300,7 @@
 	char limit = 0;
 	/* result has to be defined as int for some devices */
 	int result = 0, touch_max = 0;
-	int i = 0, usage = WCM_UNDEFINED, finger = 0, pen = 0;
+	int i = 0, page = 0, finger = 0, pen = 0;
 	unsigned char *report;
 
 	report = kzalloc(hid_desc->wDescriptorLength, GFP_KERNEL);
@@ -332,134 +327,121 @@
 
 		switch (report[i]) {
 		case HID_USAGE_PAGE:
-			switch (report[i + 1]) {
-			case HID_USAGE_PAGE_DIGITIZER:
-				usage = WCM_DIGITIZER;
-				i++;
-				break;
-
-			case HID_USAGE_PAGE_DESKTOP:
-				usage = WCM_DESKTOP;
-				i++;
-				break;
-			}
+			page = report[i + 1];
+			i++;
 			break;
 
 		case HID_USAGE:
-			switch (report[i + 1]) {
+			switch (page << 16 | report[i + 1]) {
 			case HID_USAGE_X:
-				if (usage == WCM_DESKTOP) {
-					if (finger) {
-						features->device_type = BTN_TOOL_FINGER;
-						/* touch device at least supports one touch point */
-						touch_max = 1;
-						switch (features->type) {
-						case TABLETPC2FG:
-							features->pktlen = WACOM_PKGLEN_TPC2FG;
-							break;
+				if (finger) {
+					features->device_type = BTN_TOOL_FINGER;
+					/* touch device at least supports one touch point */
+					touch_max = 1;
+					switch (features->type) {
+					case TABLETPC2FG:
+						features->pktlen = WACOM_PKGLEN_TPC2FG;
+						break;
 
-						case MTSCREEN:
-						case WACOM_24HDT:
-							features->pktlen = WACOM_PKGLEN_MTOUCH;
-							break;
+					case MTSCREEN:
+					case WACOM_24HDT:
+						features->pktlen = WACOM_PKGLEN_MTOUCH;
+						break;
 
-						case MTTPC:
-							features->pktlen = WACOM_PKGLEN_MTTPC;
-							break;
+					case MTTPC:
+						features->pktlen = WACOM_PKGLEN_MTTPC;
+						break;
 
-						case BAMBOO_PT:
-							features->pktlen = WACOM_PKGLEN_BBTOUCH;
-							break;
+					case BAMBOO_PT:
+						features->pktlen = WACOM_PKGLEN_BBTOUCH;
+						break;
 
-						default:
-							features->pktlen = WACOM_PKGLEN_GRAPHIRE;
-							break;
-						}
+					default:
+						features->pktlen = WACOM_PKGLEN_GRAPHIRE;
+						break;
+					}
 
-						switch (features->type) {
-						case BAMBOO_PT:
-							features->x_phy =
-								get_unaligned_le16(&report[i + 5]);
-							features->x_max =
-								get_unaligned_le16(&report[i + 8]);
-							i += 15;
-							break;
+					switch (features->type) {
+					case BAMBOO_PT:
+						features->x_phy =
+							get_unaligned_le16(&report[i + 5]);
+						features->x_max =
+							get_unaligned_le16(&report[i + 8]);
+						i += 15;
+						break;
 
-						case WACOM_24HDT:
-							features->x_max =
-								get_unaligned_le16(&report[i + 3]);
-							features->x_phy =
-								get_unaligned_le16(&report[i + 8]);
-							features->unit = report[i - 1];
-							features->unitExpo = report[i - 3];
-							i += 12;
-							break;
-
-						default:
-							features->x_max =
-								get_unaligned_le16(&report[i + 3]);
-							features->x_phy =
-								get_unaligned_le16(&report[i + 6]);
-							features->unit = report[i + 9];
-							features->unitExpo = report[i + 11];
-							i += 12;
-							break;
-						}
-					} else if (pen) {
-						/* penabled only accepts exact bytes of data */
-						if (features->type >= TABLETPC)
-							features->pktlen = WACOM_PKGLEN_GRAPHIRE;
-						features->device_type = BTN_TOOL_PEN;
+					case WACOM_24HDT:
 						features->x_max =
 							get_unaligned_le16(&report[i + 3]);
-						i += 4;
+						features->x_phy =
+							get_unaligned_le16(&report[i + 8]);
+						features->unit = report[i - 1];
+						features->unitExpo = report[i - 3];
+						i += 12;
+						break;
+
+					default:
+						features->x_max =
+							get_unaligned_le16(&report[i + 3]);
+						features->x_phy =
+							get_unaligned_le16(&report[i + 6]);
+						features->unit = report[i + 9];
+						features->unitExpo = report[i + 11];
+						i += 12;
+						break;
 					}
+				} else if (pen) {
+					/* penabled only accepts exact bytes of data */
+					if (features->type >= TABLETPC)
+						features->pktlen = WACOM_PKGLEN_GRAPHIRE;
+					features->device_type = BTN_TOOL_PEN;
+					features->x_max =
+						get_unaligned_le16(&report[i + 3]);
+					i += 4;
 				}
 				break;
 
 			case HID_USAGE_Y:
-				if (usage == WCM_DESKTOP) {
-					if (finger) {
-						switch (features->type) {
-						case TABLETPC2FG:
-						case MTSCREEN:
-						case MTTPC:
-							features->y_max =
-								get_unaligned_le16(&report[i + 3]);
-							features->y_phy =
-								get_unaligned_le16(&report[i + 6]);
-							i += 7;
-							break;
-
-						case WACOM_24HDT:
-							features->y_max =
-								get_unaligned_le16(&report[i + 3]);
-							features->y_phy =
-								get_unaligned_le16(&report[i - 2]);
-							i += 7;
-							break;
-
-						case BAMBOO_PT:
-							features->y_phy =
-								get_unaligned_le16(&report[i + 3]);
-							features->y_max =
-								get_unaligned_le16(&report[i + 6]);
-							i += 12;
-							break;
-
-						default:
-							features->y_max =
-								features->x_max;
-							features->y_phy =
-								get_unaligned_le16(&report[i + 3]);
-							i += 4;
-							break;
-						}
-					} else if (pen) {
+				if (finger) {
+					switch (features->type) {
+					case TABLETPC2FG:
+					case MTSCREEN:
+					case MTTPC:
 						features->y_max =
 							get_unaligned_le16(&report[i + 3]);
+						features->y_phy =
+							get_unaligned_le16(&report[i + 6]);
+						i += 7;
+						break;
+
+					case WACOM_24HDT:
+						features->y_max =
+							get_unaligned_le16(&report[i + 3]);
+						features->y_phy =
+							get_unaligned_le16(&report[i - 2]);
+						i += 7;
+						break;
+
+					case BAMBOO_PT:
+						features->y_phy =
+							get_unaligned_le16(&report[i + 3]);
+						features->y_max =
+							get_unaligned_le16(&report[i + 6]);
+						i += 12;
+						break;
+
+					default:
+						features->y_max =
+							features->x_max;
+						features->y_phy =
+							get_unaligned_le16(&report[i + 3]);
 						i += 4;
+						break;
 					}
+				} else if (pen) {
+					features->y_max =
+						get_unaligned_le16(&report[i + 3]);
+					i += 4;
 				}
 				break;
 
@@ -484,12 +466,20 @@
 					wacom_retrieve_report_data(intf, features);
 				i++;
 				break;
+
+			case HID_USAGE_PRESSURE:
+				if (pen) {
+					features->pressure_max =
+						get_unaligned_le16(&report[i + 3]);
+					i += 4;
+				}
+				break;
 			}
 			break;
 
 		case HID_COLLECTION_END:
 			/* reset UsagePage and Finger */
-			finger = usage = 0;
+			finger = page = 0;
 			break;
 
 		case HID_COLLECTION:
diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c
index 05f371d..4822c57 100644
--- a/drivers/input/tablet/wacom_wac.c
+++ b/drivers/input/tablet/wacom_wac.c
@@ -178,10 +178,9 @@
 
 static int wacom_dtu_irq(struct wacom_wac *wacom)
 {
-	struct wacom_features *features = &wacom->features;
-	char *data = wacom->data;
+	unsigned char *data = wacom->data;
 	struct input_dev *input = wacom->input;
-	int prox = data[1] & 0x20, pressure;
+	int prox = data[1] & 0x20;
 
 	dev_dbg(input->dev.parent,
 		"%s: received report #%d", __func__, data[0]);
@@ -198,10 +197,7 @@
 	input_report_key(input, BTN_STYLUS2, data[1] & 0x10);
 	input_report_abs(input, ABS_X, le16_to_cpup((__le16 *)&data[2]));
 	input_report_abs(input, ABS_Y, le16_to_cpup((__le16 *)&data[4]));
-	pressure = ((data[7] & 0x01) << 8) | data[6];
-	if (pressure < 0)
-		pressure = features->pressure_max + pressure + 1;
-	input_report_abs(input, ABS_PRESSURE, pressure);
+	input_report_abs(input, ABS_PRESSURE, ((data[7] & 0x01) << 8) | data[6]);
 	input_report_key(input, BTN_TOUCH, data[1] & 0x05);
 	if (!prox) /* out-prox */
 		wacom->id[0] = 0;
@@ -906,7 +902,7 @@
 static int wacom_24hdt_irq(struct wacom_wac *wacom)
 {
 	struct input_dev *input = wacom->input;
-	char *data = wacom->data;
+	unsigned char *data = wacom->data;
 	int i;
 	int current_num_contacts = data[61];
 	int contacts_to_send = 0;
@@ -959,7 +955,7 @@
 static int wacom_mt_touch(struct wacom_wac *wacom)
 {
 	struct input_dev *input = wacom->input;
-	char *data = wacom->data;
+	unsigned char *data = wacom->data;
 	int i;
 	int current_num_contacts = data[2];
 	int contacts_to_send = 0;
@@ -1038,7 +1034,7 @@
 
 static int wacom_tpc_single_touch(struct wacom_wac *wacom, size_t len)
 {
-	char *data = wacom->data;
+	unsigned char *data = wacom->data;
 	struct input_dev *input = wacom->input;
 	bool prox;
 	int x = 0, y = 0;
@@ -1074,10 +1070,8 @@
 
 static int wacom_tpc_pen(struct wacom_wac *wacom)
 {
-	struct wacom_features *features = &wacom->features;
-	char *data = wacom->data;
+	unsigned char *data = wacom->data;
 	struct input_dev *input = wacom->input;
-	int pressure;
 	bool prox = data[1] & 0x20;
 
 	if (!wacom->shared->stylus_in_proximity) /* first in prox */
@@ -1093,10 +1087,7 @@
 		input_report_key(input, BTN_STYLUS2, data[1] & 0x10);
 		input_report_abs(input, ABS_X, le16_to_cpup((__le16 *)&data[2]));
 		input_report_abs(input, ABS_Y, le16_to_cpup((__le16 *)&data[4]));
-		pressure = ((data[7] & 0x01) << 8) | data[6];
-		if (pressure < 0)
-			pressure = features->pressure_max + pressure + 1;
-		input_report_abs(input, ABS_PRESSURE, pressure);
+		input_report_abs(input, ABS_PRESSURE, ((data[7] & 0x03) << 8) | data[6]);
 		input_report_key(input, BTN_TOUCH, data[1] & 0x05);
 		input_report_key(input, wacom->tool[0], prox);
 		return 1;
@@ -1107,7 +1098,7 @@
 
 static int wacom_tpc_irq(struct wacom_wac *wacom, size_t len)
 {
-	char *data = wacom->data;
+	unsigned char *data = wacom->data;
 
 	dev_dbg(wacom->input->dev.parent,
 		"%s: received report #%d\n", __func__, data[0]);
@@ -1838,7 +1829,7 @@
 	case DTU:
 		if (features->type == DTUS) {
 			input_set_capability(input_dev, EV_MSC, MSC_SERIAL);
-			for (i = 0; i < 3; i++)
+			for (i = 0; i < 4; i++)
 				__set_bit(BTN_0 + i, input_dev->keybit);
 		}
 		__set_bit(BTN_TOOL_PEN, input_dev->keybit);
diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
index 45a06e4..7f8aa98 100644
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@@ -425,7 +425,7 @@
 name ## _show(struct device *dev, struct device_attribute *attr, char *buf) \
 { \
 	struct ads7846 *ts = dev_get_drvdata(dev); \
-	ssize_t v = ads7846_read12_ser(dev, \
+	ssize_t v = ads7846_read12_ser(&ts->spi->dev, \
 			READ_12BIT_SER(var)); \
 	if (v < 0) \
 		return v; \
diff --git a/drivers/regulator/pbias-regulator.c b/drivers/regulator/pbias-regulator.c
index ded3b35..6d38be3 100644
--- a/drivers/regulator/pbias-regulator.c
+++ b/drivers/regulator/pbias-regulator.c
@@ -38,66 +38,24 @@
 struct pbias_regulator_data {
 	struct regulator_desc desc;
 	void __iomem *pbias_addr;
-	unsigned int pbias_reg;
 	struct regulator_dev *dev;
 	struct regmap *syscon;
 	const struct pbias_reg_info *info;
 	int voltage;
 };
 
-static int pbias_regulator_set_voltage(struct regulator_dev *dev,
-			int min_uV, int max_uV, unsigned *selector)
-{
-	struct pbias_regulator_data *data = rdev_get_drvdata(dev);
-	const struct pbias_reg_info *info = data->info;
-	int ret, vmode;
-
-	if (min_uV <= 1800000)
-		vmode = 0;
-	else if (min_uV > 1800000)
-		vmode = info->vmode;
-
-	ret = regmap_update_bits(data->syscon, data->pbias_reg,
-						info->vmode, vmode);
-
-	return ret;
-}
-
-static int pbias_regulator_get_voltage(struct regulator_dev *rdev)
-{
-	struct pbias_regulator_data *data = rdev_get_drvdata(rdev);
-	const struct pbias_reg_info *info = data->info;
-	int value, voltage;
-
-	regmap_read(data->syscon, data->pbias_reg, &value);
-	value &= info->vmode;
-
-	voltage = value ? 3000000 : 1800000;
-
-	return voltage;
-}
+static const unsigned int pbias_volt_table[] = {
+	1800000,
+	3000000
+};
 
 static int pbias_regulator_enable(struct regulator_dev *rdev)
 {
 	struct pbias_regulator_data *data = rdev_get_drvdata(rdev);
 	const struct pbias_reg_info *info = data->info;
-	int ret;
 
-	ret = regmap_update_bits(data->syscon, data->pbias_reg,
-					info->enable_mask, info->enable);
-
-	return ret;
-}
-
-static int pbias_regulator_disable(struct regulator_dev *rdev)
-{
-	struct pbias_regulator_data *data = rdev_get_drvdata(rdev);
-	const struct pbias_reg_info *info = data->info;
-	int ret;
-
-	ret = regmap_update_bits(data->syscon, data->pbias_reg,
-						info->enable_mask, 0);
-	return ret;
+	return regmap_update_bits(data->syscon, rdev->desc->enable_reg,
+				  info->enable_mask, info->enable);
 }
 
 static int pbias_regulator_is_enable(struct regulator_dev *rdev)
@@ -106,17 +64,18 @@
 	const struct pbias_reg_info *info = data->info;
 	int value;
 
-	regmap_read(data->syscon, data->pbias_reg, &value);
+	regmap_read(data->syscon, rdev->desc->enable_reg, &value);
 
-	return (value & info->enable_mask) == info->enable_mask;
+	return (value & info->enable_mask) == info->enable;
 }
 
 static struct regulator_ops pbias_regulator_voltage_ops = {
-	.set_voltage	= pbias_regulator_set_voltage,
-	.get_voltage	= pbias_regulator_get_voltage,
-	.enable		= pbias_regulator_enable,
-	.disable	= pbias_regulator_disable,
-	.is_enabled	= pbias_regulator_is_enable,
+	.list_voltage = regulator_list_voltage_table,
+	.get_voltage_sel = regulator_get_voltage_sel_regmap,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
+	.enable = pbias_regulator_enable,
+	.disable = regulator_disable_regmap,
+	.is_enabled = pbias_regulator_is_enable,
 };
 
 static const struct pbias_reg_info pbias_mmc_omap2430 = {
@@ -192,6 +151,7 @@
 	if (IS_ERR(syscon))
 		return PTR_ERR(syscon);
 
+	cfg.regmap = syscon;
 	cfg.dev = &pdev->dev;
 
 	for (idx = 0; idx < PBIAS_NUM_REGS && data_idx < count; idx++) {
@@ -207,15 +167,19 @@
 		if (!res)
 			return -EINVAL;
 
-		drvdata[data_idx].pbias_reg = res->start;
 		drvdata[data_idx].syscon = syscon;
 		drvdata[data_idx].info = info;
 		drvdata[data_idx].desc.name = info->name;
 		drvdata[data_idx].desc.owner = THIS_MODULE;
 		drvdata[data_idx].desc.type = REGULATOR_VOLTAGE;
 		drvdata[data_idx].desc.ops = &pbias_regulator_voltage_ops;
+		drvdata[data_idx].desc.volt_table = pbias_volt_table;
 		drvdata[data_idx].desc.n_voltages = 2;
 		drvdata[data_idx].desc.enable_time = info->enable_time;
+		drvdata[data_idx].desc.vsel_reg = res->start;
+		drvdata[data_idx].desc.vsel_mask = info->vmode;
+		drvdata[data_idx].desc.enable_reg = res->start;
+		drvdata[data_idx].desc.enable_mask = info->enable_mask;
 
 		cfg.init_data = pbias_matches[idx].init_data;
 		cfg.driver_data = &drvdata[data_idx];
diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c
index 8005f98..079e6b1 100644
--- a/drivers/spi/spi-atmel.c
+++ b/drivers/spi/spi-atmel.c
@@ -1115,8 +1115,11 @@
 			atmel_spi_next_xfer_pio(master, xfer);
 		}
 
+		/* interrupts are disabled, so free the lock for schedule */
+		atmel_spi_unlock(as);
 		ret = wait_for_completion_timeout(&as->xfer_completion,
 							SPI_DMA_TIMEOUT);
+		atmel_spi_lock(as);
 		if (WARN_ON(ret == 0)) {
 			dev_err(&spi->dev,
 				"spi trasfer timeout, err %d\n", ret);
diff --git a/drivers/spi/spi-bfin5xx.c b/drivers/spi/spi-bfin5xx.c
index 55e57c3..ebf720b 100644
--- a/drivers/spi/spi-bfin5xx.c
+++ b/drivers/spi/spi-bfin5xx.c
@@ -12,6 +12,7 @@
 #include <linux/module.h>
 #include <linux/delay.h>
 #include <linux/device.h>
+#include <linux/gpio.h>
 #include <linux/slab.h>
 #include <linux/io.h>
 #include <linux/ioport.h>
diff --git a/drivers/spi/spi-sh-hspi.c b/drivers/spi/spi-sh-hspi.c
index 9009456..c8e795e 100644
--- a/drivers/spi/spi-sh-hspi.c
+++ b/drivers/spi/spi-sh-hspi.c
@@ -244,9 +244,9 @@
 		return -ENOMEM;
 	}
 
-	clk = clk_get(NULL, "shyway_clk");
+	clk = clk_get(&pdev->dev, NULL);
 	if (IS_ERR(clk)) {
-		dev_err(&pdev->dev, "shyway_clk is required\n");
+		dev_err(&pdev->dev, "couldn't get clock\n");
 		ret = -EINVAL;
 		goto error0;
 	}
diff --git a/drivers/spi/spi-sirf.c b/drivers/spi/spi-sirf.c
index 1a77ad5..67d8909 100644
--- a/drivers/spi/spi-sirf.c
+++ b/drivers/spi/spi-sirf.c
@@ -287,8 +287,8 @@
 				sspi->left_rx_word)
 			sspi->rx_word(sspi);
 
-	if (spi_stat & (SIRFSOC_SPI_FIFO_EMPTY
-			| SIRFSOC_SPI_TXFIFO_THD_REACH))
+	if (spi_stat & (SIRFSOC_SPI_TXFIFO_EMPTY |
+			SIRFSOC_SPI_TXFIFO_THD_REACH))
 		while (!((readl(sspi->base + SIRFSOC_SPI_TXFIFO_STATUS)
 				& SIRFSOC_SPI_FIFO_FULL)) &&
 				sspi->left_tx_word)
@@ -470,7 +470,16 @@
 		writel(regval, sspi->base + SIRFSOC_SPI_CTRL);
 	} else {
 		int gpio = sspi->chipselect[spi->chip_select];
-		gpio_direction_output(gpio, spi->mode & SPI_CS_HIGH ? 0 : 1);
+		switch (value) {
+		case BITBANG_CS_ACTIVE:
+			gpio_direction_output(gpio,
+					spi->mode & SPI_CS_HIGH ? 1 : 0);
+			break;
+		case BITBANG_CS_INACTIVE:
+			gpio_direction_output(gpio,
+					spi->mode & SPI_CS_HIGH ? 0 : 1);
+			break;
+		}
 	}
 }
 
@@ -559,6 +568,11 @@
 		regval &= ~SIRFSOC_SPI_CMD_MODE;
 		sspi->tx_by_cmd = false;
 	}
+	/*
+	 * set spi controller in RISC chipselect mode, we are controlling CS by
+	 * software BITBANG_CS_ACTIVE and BITBANG_CS_INACTIVE.
+	 */
+	regval |= SIRFSOC_SPI_CS_IO_MODE;
 	writel(regval, sspi->base + SIRFSOC_SPI_CTRL);
 
 	if (IS_DMA_VALID(t)) {
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 39da1c2..88a6df4 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -1221,9 +1221,6 @@
 	if (!S_ISREG(inode->i_mode))
 		return -EOPNOTSUPP;
 
-	if (IS_SWAPFILE(inode))
-		return -ETXTBSY;
-
 	mutex_lock(&inode->i_mutex);
 
 	if (ceph_snap(inode) != CEPH_NOSNAP) {
diff --git a/fs/compat.c b/fs/compat.c
index ca926ad..66d3d3c 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -457,9 +457,9 @@
 	case F_GETLK64:
 	case F_SETLK64:
 	case F_SETLKW64:
-	case F_GETLKP:
-	case F_SETLKP:
-	case F_SETLKPW:
+	case F_OFD_GETLK:
+	case F_OFD_SETLK:
+	case F_OFD_SETLKW:
 		ret = get_compat_flock64(&f, compat_ptr(arg));
 		if (ret != 0)
 			break;
@@ -468,7 +468,7 @@
 		conv_cmd = convert_fcntl_cmd(cmd);
 		ret = sys_fcntl(fd, conv_cmd, (unsigned long)&f);
 		set_fs(old_fs);
-		if ((conv_cmd == F_GETLK || conv_cmd == F_GETLKP) && ret == 0) {
+		if ((conv_cmd == F_GETLK || conv_cmd == F_OFD_GETLK) && ret == 0) {
 			/* need to return lock information - see above for commentary */
 			if (f.l_start > COMPAT_LOFF_T_MAX)
 				ret = -EOVERFLOW;
@@ -493,9 +493,9 @@
 	case F_GETLK64:
 	case F_SETLK64:
 	case F_SETLKW64:
-	case F_GETLKP:
-	case F_SETLKP:
-	case F_SETLKPW:
+	case F_OFD_GETLK:
+	case F_OFD_SETLK:
+	case F_OFD_SETLKW:
 		return -EINVAL;
 	}
 	return compat_sys_fcntl64(fd, cmd, arg);
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index 6ea7b14..5c56785 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -667,7 +667,7 @@
 			continue;
 
 		x = ext4_count_free(bitmap_bh->b_data,
-				    EXT4_BLOCKS_PER_GROUP(sb) / 8);
+				    EXT4_CLUSTERS_PER_GROUP(sb) / 8);
 		printk(KERN_DEBUG "group %u: stored = %d, counted = %u\n",
 			i, ext4_free_group_clusters(sb, gdp), x);
 		bitmap_count += x;
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index f1c65dc..66946aa 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -2466,23 +2466,6 @@
 	up_write(&EXT4_I(inode)->i_data_sem);
 }
 
-/*
- * Update i_disksize after writeback has been started. Races with truncate
- * are avoided by checking i_size under i_data_sem.
- */
-static inline void ext4_wb_update_i_disksize(struct inode *inode, loff_t newsize)
-{
-	loff_t i_size;
-
-	down_write(&EXT4_I(inode)->i_data_sem);
-	i_size = i_size_read(inode);
-	if (newsize > i_size)
-		newsize = i_size;
-	if (newsize > EXT4_I(inode)->i_disksize)
-		EXT4_I(inode)->i_disksize = newsize;
-	up_write(&EXT4_I(inode)->i_data_sem);
-}
-
 struct ext4_group_info {
 	unsigned long   bb_state;
 	struct rb_root  bb_free_root;
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 82df3ce..01b0c20 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -3313,6 +3313,11 @@
 		return PTR_ERR(path);
 	depth = ext_depth(inode);
 	ex = path[depth].p_ext;
+	if (!ex) {
+		EXT4_ERROR_INODE(inode, "unexpected hole at %lu",
+				 (unsigned long) map->m_lblk);
+		return -EIO;
+	}
 	uninitialized = ext4_ext_is_uninitialized(ex);
 	split_flag1 = 0;
 
@@ -3694,6 +3699,12 @@
 		}
 		depth = ext_depth(inode);
 		ex = path[depth].p_ext;
+		if (!ex) {
+			EXT4_ERROR_INODE(inode, "unexpected hole at %lu",
+					 (unsigned long) map->m_lblk);
+			err = -EIO;
+			goto out;
+		}
 	}
 
 	err = ext4_ext_get_access(handle, inode, path + depth);
@@ -4730,6 +4741,9 @@
 
 	trace_ext4_zero_range(inode, offset, len, mode);
 
+	if (!S_ISREG(inode->i_mode))
+		return -EINVAL;
+
 	/*
 	 * Write out all dirty pages to avoid race conditions
 	 * Then release them.
@@ -4878,9 +4892,6 @@
 	if (mode & FALLOC_FL_PUNCH_HOLE)
 		return ext4_punch_hole(inode, offset, len);
 
-	if (mode & FALLOC_FL_COLLAPSE_RANGE)
-		return ext4_collapse_range(inode, offset, len);
-
 	ret = ext4_convert_inline_data(inode);
 	if (ret)
 		return ret;
@@ -4892,6 +4903,9 @@
 	if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))
 		return -EOPNOTSUPP;
 
+	if (mode & FALLOC_FL_COLLAPSE_RANGE)
+		return ext4_collapse_range(inode, offset, len);
+
 	if (mode & FALLOC_FL_ZERO_RANGE)
 		return ext4_zero_range(file, offset, len, mode);
 
@@ -5229,18 +5243,19 @@
 			if (ex_start == EXT_FIRST_EXTENT(path[depth].p_hdr))
 				update = 1;
 
-			*start = ex_last->ee_block +
+			*start = le32_to_cpu(ex_last->ee_block) +
 				ext4_ext_get_actual_len(ex_last);
 
 			while (ex_start <= ex_last) {
-				ex_start->ee_block -= shift;
-				if (ex_start >
-					EXT_FIRST_EXTENT(path[depth].p_hdr)) {
-					if (ext4_ext_try_to_merge_right(inode,
-						path, ex_start - 1))
-						ex_last--;
-				}
-				ex_start++;
+				le32_add_cpu(&ex_start->ee_block, -shift);
+				/* Try to merge to the left. */
+				if ((ex_start >
+				     EXT_FIRST_EXTENT(path[depth].p_hdr)) &&
+				    ext4_ext_try_to_merge_right(inode,
+							path, ex_start - 1))
+					ex_last--;
+				else
+					ex_start++;
 			}
 			err = ext4_ext_dirty(handle, inode, path + depth);
 			if (err)
@@ -5255,7 +5270,7 @@
 		if (err)
 			goto out;
 
-		path[depth].p_idx->ei_block -= shift;
+		le32_add_cpu(&path[depth].p_idx->ei_block, -shift);
 		err = ext4_ext_dirty(handle, inode, path + depth);
 		if (err)
 			goto out;
@@ -5300,7 +5315,8 @@
 		return ret;
 	}
 
-	stop_block = extent->ee_block + ext4_ext_get_actual_len(extent);
+	stop_block = le32_to_cpu(extent->ee_block) +
+			ext4_ext_get_actual_len(extent);
 	ext4_ext_drop_refs(path);
 	kfree(path);
 
@@ -5313,10 +5329,18 @@
 	 * enough to accomodate the shift.
 	 */
 	path = ext4_ext_find_extent(inode, start - 1, NULL, 0);
+	if (IS_ERR(path))
+		return PTR_ERR(path);
 	depth = path->p_depth;
 	extent =  path[depth].p_ext;
-	ex_start = extent->ee_block;
-	ex_end = extent->ee_block + ext4_ext_get_actual_len(extent);
+	if (extent) {
+		ex_start = le32_to_cpu(extent->ee_block);
+		ex_end = le32_to_cpu(extent->ee_block) +
+			ext4_ext_get_actual_len(extent);
+	} else {
+		ex_start = 0;
+		ex_end = 0;
+	}
 	ext4_ext_drop_refs(path);
 	kfree(path);
 
@@ -5331,7 +5355,13 @@
 			return PTR_ERR(path);
 		depth = path->p_depth;
 		extent = path[depth].p_ext;
-		current_block = extent->ee_block;
+		if (!extent) {
+			EXT4_ERROR_INODE(inode, "unexpected hole at %lu",
+					 (unsigned long) start);
+			return -EIO;
+		}
+
+		current_block = le32_to_cpu(extent->ee_block);
 		if (start > current_block) {
 			/* Hole, move to the next extent */
 			ret = mext_next_extent(inode, path, &extent);
@@ -5365,17 +5395,18 @@
 	ext4_lblk_t punch_start, punch_stop;
 	handle_t *handle;
 	unsigned int credits;
-	loff_t new_size;
+	loff_t new_size, ioffset;
 	int ret;
 
-	BUG_ON(offset + len > i_size_read(inode));
-
 	/* Collapse range works only on fs block size aligned offsets. */
 	if (offset & (EXT4_BLOCK_SIZE(sb) - 1) ||
 	    len & (EXT4_BLOCK_SIZE(sb) - 1))
 		return -EINVAL;
 
 	if (!S_ISREG(inode->i_mode))
+		return -EINVAL;
+
+	if (EXT4_SB(inode->i_sb)->s_cluster_ratio > 1)
 		return -EOPNOTSUPP;
 
 	trace_ext4_collapse_range(inode, offset, len);
@@ -5383,22 +5414,34 @@
 	punch_start = offset >> EXT4_BLOCK_SIZE_BITS(sb);
 	punch_stop = (offset + len) >> EXT4_BLOCK_SIZE_BITS(sb);
 
+	/* Call ext4_force_commit to flush all data in case of data=journal. */
+	if (ext4_should_journal_data(inode)) {
+		ret = ext4_force_commit(inode->i_sb);
+		if (ret)
+			return ret;
+	}
+
+	/*
+	 * Need to round down offset to be aligned with page size boundary
+	 * for page size > block size.
+	 */
+	ioffset = round_down(offset, PAGE_SIZE);
+
 	/* Write out all dirty pages */
-	ret = filemap_write_and_wait_range(inode->i_mapping, offset, -1);
+	ret = filemap_write_and_wait_range(inode->i_mapping, ioffset,
+					   LLONG_MAX);
 	if (ret)
 		return ret;
 
 	/* Take mutex lock */
 	mutex_lock(&inode->i_mutex);
 
-	/* It's not possible punch hole on append only file */
-	if (IS_APPEND(inode) || IS_IMMUTABLE(inode)) {
-		ret = -EPERM;
-		goto out_mutex;
-	}
-
-	if (IS_SWAPFILE(inode)) {
-		ret = -ETXTBSY;
+	/*
+	 * There is no need to overlap collapse range with EOF, in which case
+	 * it is effectively a truncate operation
+	 */
+	if (offset + len >= i_size_read(inode)) {
+		ret = -EINVAL;
 		goto out_mutex;
 	}
 
@@ -5408,7 +5451,7 @@
 		goto out_mutex;
 	}
 
-	truncate_pagecache_range(inode, offset, -1);
+	truncate_pagecache(inode, ioffset);
 
 	/* Wait for existing dio to complete */
 	ext4_inode_block_unlocked_dio(inode);
@@ -5425,7 +5468,7 @@
 	ext4_discard_preallocations(inode);
 
 	ret = ext4_es_remove_extent(inode, punch_start,
-				    EXT_MAX_BLOCKS - punch_start - 1);
+				    EXT_MAX_BLOCKS - punch_start);
 	if (ret) {
 		up_write(&EXT4_I(inode)->i_data_sem);
 		goto out_stop;
@@ -5436,6 +5479,7 @@
 		up_write(&EXT4_I(inode)->i_data_sem);
 		goto out_stop;
 	}
+	ext4_discard_preallocations(inode);
 
 	ret = ext4_ext_shift_extents(inode, handle, punch_stop,
 				     punch_stop - punch_start);
@@ -5445,10 +5489,9 @@
 	}
 
 	new_size = i_size_read(inode) - len;
-	truncate_setsize(inode, new_size);
+	i_size_write(inode, new_size);
 	EXT4_I(inode)->i_disksize = new_size;
 
-	ext4_discard_preallocations(inode);
 	up_write(&EXT4_I(inode)->i_data_sem);
 	if (IS_SYNC(inode))
 		ext4_handle_sync(handle);
diff --git a/fs/ext4/extents_status.c b/fs/ext4/extents_status.c
index 0a014a7..0ebc212 100644
--- a/fs/ext4/extents_status.c
+++ b/fs/ext4/extents_status.c
@@ -810,7 +810,7 @@
 
 			newes.es_lblk = end + 1;
 			newes.es_len = len2;
-			block = 0x7FDEADBEEF;
+			block = 0x7FDEADBEEFULL;
 			if (ext4_es_is_written(&orig_es) ||
 			    ext4_es_is_unwritten(&orig_es))
 				block = ext4_es_pblock(&orig_es) +
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index ca7502d..063fc15 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -82,7 +82,7 @@
 	size_t count = iov_length(iov, nr_segs);
 	loff_t final_size = pos + count;
 
-	if (pos >= inode->i_size)
+	if (pos >= i_size_read(inode))
 		return 0;
 
 	if ((pos & blockmask) || (final_size & blockmask))
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 5b0d2c7..d7b7462 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -522,6 +522,10 @@
 	if (unlikely(map->m_len > INT_MAX))
 		map->m_len = INT_MAX;
 
+	/* We can handle the block number less than EXT_MAX_BLOCKS */
+	if (unlikely(map->m_lblk >= EXT_MAX_BLOCKS))
+		return -EIO;
+
 	/* Lookup extent status tree firstly */
 	if (ext4_es_lookup_extent(inode, map->m_lblk, &es)) {
 		ext4_es_lru_add(inode);
@@ -2243,13 +2247,23 @@
 			return err;
 	} while (map->m_len);
 
-	/* Update on-disk size after IO is submitted */
+	/*
+	 * Update on-disk size after IO is submitted.  Races with
+	 * truncate are avoided by checking i_size under i_data_sem.
+	 */
 	disksize = ((loff_t)mpd->first_page) << PAGE_CACHE_SHIFT;
 	if (disksize > EXT4_I(inode)->i_disksize) {
 		int err2;
+		loff_t i_size;
 
-		ext4_wb_update_i_disksize(inode, disksize);
+		down_write(&EXT4_I(inode)->i_data_sem);
+		i_size = i_size_read(inode);
+		if (disksize > i_size)
+			disksize = i_size;
+		if (disksize > EXT4_I(inode)->i_disksize)
+			EXT4_I(inode)->i_disksize = disksize;
 		err2 = ext4_mark_inode_dirty(handle, inode);
+		up_write(&EXT4_I(inode)->i_data_sem);
 		if (err2)
 			ext4_error(inode->i_sb,
 				   "Failed to mark inode %lu dirty",
@@ -3527,15 +3541,6 @@
 	}
 
 	mutex_lock(&inode->i_mutex);
-	/* It's not possible punch hole on append only file */
-	if (IS_APPEND(inode) || IS_IMMUTABLE(inode)) {
-		ret = -EPERM;
-		goto out_mutex;
-	}
-	if (IS_SWAPFILE(inode)) {
-		ret = -ETXTBSY;
-		goto out_mutex;
-	}
 
 	/* No need to punch hole beyond i_size */
 	if (offset >= inode->i_size)
@@ -3616,7 +3621,6 @@
 		ret = ext4_free_hole_blocks(handle, inode, first_block,
 					    stop_block);
 
-	ext4_discard_preallocations(inode);
 	up_write(&EXT4_I(inode)->i_data_sem);
 	if (IS_SYNC(inode))
 		ext4_handle_sync(handle);
@@ -4423,21 +4427,20 @@
  *
  * We are called from a few places:
  *
- * - Within generic_file_write() for O_SYNC files.
+ * - Within generic_file_aio_write() -> generic_write_sync() for O_SYNC files.
  *   Here, there will be no transaction running. We wait for any running
  *   transaction to commit.
  *
- * - Within sys_sync(), kupdate and such.
- *   We wait on commit, if tol to.
+ * - Within flush work (sys_sync(), kupdate and such).
+ *   We wait on commit, if told to.
  *
- * - Within prune_icache() (PF_MEMALLOC == true)
- *   Here we simply return.  We can't afford to block kswapd on the
- *   journal commit.
+ * - Within iput_final() -> write_inode_now()
+ *   We wait on commit, if told to.
  *
  * In all cases it is actually safe for us to return without doing anything,
  * because the inode has been copied into a raw inode buffer in
- * ext4_mark_inode_dirty().  This is a correctness thing for O_SYNC and for
- * knfsd.
+ * ext4_mark_inode_dirty().  This is a correctness thing for WB_SYNC_ALL
+ * writeback.
  *
  * Note that we are absolutely dependent upon all inode dirtiers doing the
  * right thing: they *must* call mark_inode_dirty() after dirtying info in
@@ -4449,15 +4452,15 @@
  *	stuff();
  *	inode->i_size = expr;
  *
- * is in error because a kswapd-driven write_inode() could occur while
- * `stuff()' is running, and the new i_size will be lost.  Plus the inode
- * will no longer be on the superblock's dirty inode list.
+ * is in error because write_inode() could occur while `stuff()' is running,
+ * and the new i_size will be lost.  Plus the inode will no longer be on the
+ * superblock's dirty inode list.
  */
 int ext4_write_inode(struct inode *inode, struct writeback_control *wbc)
 {
 	int err;
 
-	if (current->flags & PF_MEMALLOC)
+	if (WARN_ON_ONCE(current->flags & PF_MEMALLOC))
 		return 0;
 
 	if (EXT4_SB(inode->i_sb)->s_journal) {
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index a888cac..c8238a2 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -989,7 +989,7 @@
 	poff = block % blocks_per_page;
 	page = find_or_create_page(inode->i_mapping, pnum, GFP_NOFS);
 	if (!page)
-		return -EIO;
+		return -ENOMEM;
 	BUG_ON(page->mapping != inode->i_mapping);
 	e4b->bd_bitmap_page = page;
 	e4b->bd_bitmap = page_address(page) + (poff * sb->s_blocksize);
@@ -1003,7 +1003,7 @@
 	pnum = block / blocks_per_page;
 	page = find_or_create_page(inode->i_mapping, pnum, GFP_NOFS);
 	if (!page)
-		return -EIO;
+		return -ENOMEM;
 	BUG_ON(page->mapping != inode->i_mapping);
 	e4b->bd_buddy_page = page;
 	return 0;
@@ -1168,7 +1168,11 @@
 			unlock_page(page);
 		}
 	}
-	if (page == NULL || !PageUptodate(page)) {
+	if (page == NULL) {
+		ret = -ENOMEM;
+		goto err;
+	}
+	if (!PageUptodate(page)) {
 		ret = -EIO;
 		goto err;
 	}
@@ -1197,7 +1201,11 @@
 			unlock_page(page);
 		}
 	}
-	if (page == NULL || !PageUptodate(page)) {
+	if (page == NULL) {
+		ret = -ENOMEM;
+		goto err;
+	}
+	if (!PageUptodate(page)) {
 		ret = -EIO;
 		goto err;
 	}
@@ -5008,6 +5016,8 @@
  */
 static int ext4_trim_extent(struct super_block *sb, int start, int count,
 			     ext4_group_t group, struct ext4_buddy *e4b)
+__releases(bitlock)
+__acquires(bitlock)
 {
 	struct ext4_free_extent ex;
 	int ret = 0;
diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index ab95508..c18d95b 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -308,13 +308,14 @@
 	if (error) {
 		struct inode *inode = io_end->inode;
 
-		ext4_warning(inode->i_sb, "I/O error writing to inode %lu "
+		ext4_warning(inode->i_sb, "I/O error %d writing to inode %lu "
 			     "(offset %llu size %ld starting block %llu)",
-			     inode->i_ino,
+			     error, inode->i_ino,
 			     (unsigned long long) io_end->offset,
 			     (long) io_end->size,
 			     (unsigned long long)
 			     bi_sector >> (inode->i_blkbits - 9));
+		mapping_set_error(inode->i_mapping, error);
 	}
 
 	if (io_end->flag & EXT4_IO_END_UNWRITTEN) {
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index f3c6670..6f9e6fa 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -3869,19 +3869,38 @@
 			goto failed_mount2;
 		}
 	}
+
+	/*
+	 * set up enough so that it can read an inode,
+	 * and create new inode for buddy allocator
+	 */
+	sbi->s_gdb_count = db_count;
+	if (!test_opt(sb, NOLOAD) &&
+	    EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_HAS_JOURNAL))
+		sb->s_op = &ext4_sops;
+	else
+		sb->s_op = &ext4_nojournal_sops;
+
+	ext4_ext_init(sb);
+	err = ext4_mb_init(sb);
+	if (err) {
+		ext4_msg(sb, KERN_ERR, "failed to initialize mballoc (%d)",
+			 err);
+		goto failed_mount2;
+	}
+
 	if (!ext4_check_descriptors(sb, &first_not_zeroed)) {
 		ext4_msg(sb, KERN_ERR, "group descriptors corrupted!");
-		goto failed_mount2;
+		goto failed_mount2a;
 	}
 	if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FLEX_BG))
 		if (!ext4_fill_flex_info(sb)) {
 			ext4_msg(sb, KERN_ERR,
 			       "unable to initialize "
 			       "flex_bg meta info!");
-			goto failed_mount2;
+			goto failed_mount2a;
 		}
 
-	sbi->s_gdb_count = db_count;
 	get_random_bytes(&sbi->s_next_generation, sizeof(u32));
 	spin_lock_init(&sbi->s_next_gen_lock);
 
@@ -3916,14 +3935,6 @@
 	sbi->s_stripe = ext4_get_stripe_size(sbi);
 	sbi->s_extent_max_zeroout_kb = 32;
 
-	/*
-	 * set up enough so that it can read an inode
-	 */
-	if (!test_opt(sb, NOLOAD) &&
-	    EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_HAS_JOURNAL))
-		sb->s_op = &ext4_sops;
-	else
-		sb->s_op = &ext4_nojournal_sops;
 	sb->s_export_op = &ext4_export_ops;
 	sb->s_xattr = ext4_xattr_handlers;
 #ifdef CONFIG_QUOTA
@@ -4113,21 +4124,13 @@
 	if (err) {
 		ext4_msg(sb, KERN_ERR, "failed to reserve %llu clusters for "
 			 "reserved pool", ext4_calculate_resv_clusters(sb));
-		goto failed_mount4a;
+		goto failed_mount5;
 	}
 
 	err = ext4_setup_system_zone(sb);
 	if (err) {
 		ext4_msg(sb, KERN_ERR, "failed to initialize system "
 			 "zone (%d)", err);
-		goto failed_mount4a;
-	}
-
-	ext4_ext_init(sb);
-	err = ext4_mb_init(sb);
-	if (err) {
-		ext4_msg(sb, KERN_ERR, "failed to initialize mballoc (%d)",
-			 err);
 		goto failed_mount5;
 	}
 
@@ -4204,11 +4207,8 @@
 failed_mount7:
 	ext4_unregister_li_request(sb);
 failed_mount6:
-	ext4_mb_release(sb);
-failed_mount5:
-	ext4_ext_release(sb);
 	ext4_release_system_zone(sb);
-failed_mount4a:
+failed_mount5:
 	dput(sb->s_root);
 	sb->s_root = NULL;
 failed_mount4:
@@ -4232,11 +4232,14 @@
 	percpu_counter_destroy(&sbi->s_extent_cache_cnt);
 	if (sbi->s_mmp_tsk)
 		kthread_stop(sbi->s_mmp_tsk);
+failed_mount2a:
+	ext4_mb_release(sb);
 failed_mount2:
 	for (i = 0; i < db_count; i++)
 		brelse(sbi->s_group_desc[i]);
 	ext4_kvfree(sbi->s_group_desc);
 failed_mount:
+	ext4_ext_release(sb);
 	if (sbi->s_chksum_driver)
 		crypto_free_shash(sbi->s_chksum_driver);
 	if (sbi->s_proc) {
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 1f5cf58..4eec399 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -520,8 +520,8 @@
 }
 
 /*
- * Release the xattr block BH: If the reference count is > 1, decrement
- * it; otherwise free the block.
+ * Release the xattr block BH: If the reference count is > 1, decrement it;
+ * otherwise free the block.
  */
 static void
 ext4_xattr_release_block(handle_t *handle, struct inode *inode,
@@ -542,16 +542,31 @@
 		if (ce)
 			mb_cache_entry_free(ce);
 		get_bh(bh);
+		unlock_buffer(bh);
 		ext4_free_blocks(handle, inode, bh, 0, 1,
 				 EXT4_FREE_BLOCKS_METADATA |
 				 EXT4_FREE_BLOCKS_FORGET);
-		unlock_buffer(bh);
 	} else {
 		le32_add_cpu(&BHDR(bh)->h_refcount, -1);
 		if (ce)
 			mb_cache_entry_release(ce);
+		/*
+		 * Beware of this ugliness: Releasing of xattr block references
+		 * from different inodes can race and so we have to protect
+		 * from a race where someone else frees the block (and releases
+		 * its journal_head) before we are done dirtying the buffer. In
+		 * nojournal mode this race is harmless and we actually cannot
+		 * call ext4_handle_dirty_xattr_block() with locked buffer as
+		 * that function can call sync_dirty_buffer() so for that case
+		 * we handle the dirtying after unlocking the buffer.
+		 */
+		if (ext4_handle_valid(handle))
+			error = ext4_handle_dirty_xattr_block(handle, inode,
+							      bh);
 		unlock_buffer(bh);
-		error = ext4_handle_dirty_xattr_block(handle, inode, bh);
+		if (!ext4_handle_valid(handle))
+			error = ext4_handle_dirty_xattr_block(handle, inode,
+							      bh);
 		if (IS_SYNC(inode))
 			ext4_handle_sync(handle);
 		dquot_free_block(inode, EXT4_C2B(EXT4_SB(inode->i_sb), 1));
diff --git a/fs/fcntl.c b/fs/fcntl.c
index 9ead159..72c82f6 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -274,15 +274,15 @@
 		break;
 #if BITS_PER_LONG != 32
 	/* 32-bit arches must use fcntl64() */
-	case F_GETLKP:
+	case F_OFD_GETLK:
 #endif
 	case F_GETLK:
 		err = fcntl_getlk(filp, cmd, (struct flock __user *) arg);
 		break;
 #if BITS_PER_LONG != 32
 	/* 32-bit arches must use fcntl64() */
-	case F_SETLKP:
-	case F_SETLKPW:
+	case F_OFD_SETLK:
+	case F_OFD_SETLKW:
 #endif
 		/* Fallthrough */
 	case F_SETLK:
@@ -399,13 +399,13 @@
 	
 	switch (cmd) {
 	case F_GETLK64:
-	case F_GETLKP:
+	case F_OFD_GETLK:
 		err = fcntl_getlk64(f.file, cmd, (struct flock64 __user *) arg);
 		break;
 	case F_SETLK64:
 	case F_SETLKW64:
-	case F_SETLKP:
-	case F_SETLKPW:
+	case F_OFD_SETLK:
+	case F_OFD_SETLKW:
 		err = fcntl_setlk64(fd, f.file, cmd,
 				(struct flock64 __user *) arg);
 		break;
diff --git a/fs/locks.c b/fs/locks.c
index 13fc7a6..e663aea 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -135,7 +135,7 @@
 #define IS_POSIX(fl)	(fl->fl_flags & FL_POSIX)
 #define IS_FLOCK(fl)	(fl->fl_flags & FL_FLOCK)
 #define IS_LEASE(fl)	(fl->fl_flags & (FL_LEASE|FL_DELEG))
-#define IS_FILE_PVT(fl)	(fl->fl_flags & FL_FILE_PVT)
+#define IS_OFDLCK(fl)	(fl->fl_flags & FL_OFDLCK)
 
 static bool lease_breaking(struct file_lock *fl)
 {
@@ -564,7 +564,7 @@
 	BUG_ON(!list_empty(&waiter->fl_block));
 	waiter->fl_next = blocker;
 	list_add_tail(&waiter->fl_block, &blocker->fl_block);
-	if (IS_POSIX(blocker) && !IS_FILE_PVT(blocker))
+	if (IS_POSIX(blocker) && !IS_OFDLCK(blocker))
 		locks_insert_global_blocked(waiter);
 }
 
@@ -759,12 +759,12 @@
  * of tasks (such as posix threads) sharing the same open file table.
  * To handle those cases, we just bail out after a few iterations.
  *
- * For FL_FILE_PVT locks, the owner is the filp, not the files_struct.
+ * For FL_OFDLCK locks, the owner is the filp, not the files_struct.
  * Because the owner is not even nominally tied to a thread of
  * execution, the deadlock detection below can't reasonably work well. Just
  * skip it for those.
  *
- * In principle, we could do a more limited deadlock detection on FL_FILE_PVT
+ * In principle, we could do a more limited deadlock detection on FL_OFDLCK
  * locks that just checks for the case where two tasks are attempting to
  * upgrade from read to write locks on the same inode.
  */
@@ -791,9 +791,9 @@
 
 	/*
 	 * This deadlock detector can't reasonably detect deadlocks with
-	 * FL_FILE_PVT locks, since they aren't owned by a process, per-se.
+	 * FL_OFDLCK locks, since they aren't owned by a process, per-se.
 	 */
-	if (IS_FILE_PVT(caller_fl))
+	if (IS_OFDLCK(caller_fl))
 		return 0;
 
 	while ((block_fl = what_owner_is_waiting_for(block_fl))) {
@@ -1391,11 +1391,10 @@
 
 restart:
 	break_time = flock->fl_break_time;
-	if (break_time != 0) {
+	if (break_time != 0)
 		break_time -= jiffies;
-		if (break_time == 0)
-			break_time++;
-	}
+	if (break_time == 0)
+		break_time++;
 	locks_insert_block(flock, new_fl);
 	spin_unlock(&inode->i_lock);
 	error = wait_event_interruptible_timeout(new_fl->fl_wait,
@@ -1891,7 +1890,7 @@
 
 static int posix_lock_to_flock(struct flock *flock, struct file_lock *fl)
 {
-	flock->l_pid = IS_FILE_PVT(fl) ? -1 : fl->fl_pid;
+	flock->l_pid = IS_OFDLCK(fl) ? -1 : fl->fl_pid;
 #if BITS_PER_LONG == 32
 	/*
 	 * Make sure we can represent the posix lock via
@@ -1913,7 +1912,7 @@
 #if BITS_PER_LONG == 32
 static void posix_lock_to_flock64(struct flock64 *flock, struct file_lock *fl)
 {
-	flock->l_pid = IS_FILE_PVT(fl) ? -1 : fl->fl_pid;
+	flock->l_pid = IS_OFDLCK(fl) ? -1 : fl->fl_pid;
 	flock->l_start = fl->fl_start;
 	flock->l_len = fl->fl_end == OFFSET_MAX ? 0 :
 		fl->fl_end - fl->fl_start + 1;
@@ -1942,13 +1941,13 @@
 	if (error)
 		goto out;
 
-	if (cmd == F_GETLKP) {
+	if (cmd == F_OFD_GETLK) {
 		error = -EINVAL;
 		if (flock.l_pid != 0)
 			goto out;
 
 		cmd = F_GETLK;
-		file_lock.fl_flags |= FL_FILE_PVT;
+		file_lock.fl_flags |= FL_OFDLCK;
 		file_lock.fl_owner = (fl_owner_t)filp;
 	}
 
@@ -2074,25 +2073,25 @@
 
 	/*
 	 * If the cmd is requesting file-private locks, then set the
-	 * FL_FILE_PVT flag and override the owner.
+	 * FL_OFDLCK flag and override the owner.
 	 */
 	switch (cmd) {
-	case F_SETLKP:
+	case F_OFD_SETLK:
 		error = -EINVAL;
 		if (flock.l_pid != 0)
 			goto out;
 
 		cmd = F_SETLK;
-		file_lock->fl_flags |= FL_FILE_PVT;
+		file_lock->fl_flags |= FL_OFDLCK;
 		file_lock->fl_owner = (fl_owner_t)filp;
 		break;
-	case F_SETLKPW:
+	case F_OFD_SETLKW:
 		error = -EINVAL;
 		if (flock.l_pid != 0)
 			goto out;
 
 		cmd = F_SETLKW;
-		file_lock->fl_flags |= FL_FILE_PVT;
+		file_lock->fl_flags |= FL_OFDLCK;
 		file_lock->fl_owner = (fl_owner_t)filp;
 		/* Fallthrough */
 	case F_SETLKW:
@@ -2144,13 +2143,13 @@
 	if (error)
 		goto out;
 
-	if (cmd == F_GETLKP) {
+	if (cmd == F_OFD_GETLK) {
 		error = -EINVAL;
 		if (flock.l_pid != 0)
 			goto out;
 
 		cmd = F_GETLK64;
-		file_lock.fl_flags |= FL_FILE_PVT;
+		file_lock.fl_flags |= FL_OFDLCK;
 		file_lock.fl_owner = (fl_owner_t)filp;
 	}
 
@@ -2209,25 +2208,25 @@
 
 	/*
 	 * If the cmd is requesting file-private locks, then set the
-	 * FL_FILE_PVT flag and override the owner.
+	 * FL_OFDLCK flag and override the owner.
 	 */
 	switch (cmd) {
-	case F_SETLKP:
+	case F_OFD_SETLK:
 		error = -EINVAL;
 		if (flock.l_pid != 0)
 			goto out;
 
 		cmd = F_SETLK64;
-		file_lock->fl_flags |= FL_FILE_PVT;
+		file_lock->fl_flags |= FL_OFDLCK;
 		file_lock->fl_owner = (fl_owner_t)filp;
 		break;
-	case F_SETLKPW:
+	case F_OFD_SETLKW:
 		error = -EINVAL;
 		if (flock.l_pid != 0)
 			goto out;
 
 		cmd = F_SETLKW64;
-		file_lock->fl_flags |= FL_FILE_PVT;
+		file_lock->fl_flags |= FL_OFDLCK;
 		file_lock->fl_owner = (fl_owner_t)filp;
 		/* Fallthrough */
 	case F_SETLKW64:
@@ -2413,8 +2412,8 @@
 	if (IS_POSIX(fl)) {
 		if (fl->fl_flags & FL_ACCESS)
 			seq_printf(f, "ACCESS");
-		else if (IS_FILE_PVT(fl))
-			seq_printf(f, "FLPVT ");
+		else if (IS_OFDLCK(fl))
+			seq_printf(f, "OFDLCK");
 		else
 			seq_printf(f, "POSIX ");
 
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index 39c8ef8..2c73cae9 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -654,9 +654,11 @@
 
 static int setup_callback_client(struct nfs4_client *clp, struct nfs4_cb_conn *conn, struct nfsd4_session *ses)
 {
+	int maxtime = max_cb_time(clp->net);
 	struct rpc_timeout	timeparms = {
-		.to_initval	= max_cb_time(clp->net),
+		.to_initval	= maxtime,
 		.to_retries	= 0,
+		.to_maxval	= maxtime,
 	};
 	struct rpc_create_args args = {
 		.net		= clp->net,
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 2723c1b..18881f3 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -3627,14 +3627,6 @@
 	/* nfsd4_check_resp_size guarantees enough room for error status */
 	if (!op->status)
 		op->status = nfsd4_check_resp_size(resp, 0);
-	if (op->status == nfserr_resource && nfsd4_has_session(&resp->cstate)) {
-		struct nfsd4_slot *slot = resp->cstate.slot;
-
-		if (slot->sl_flags & NFSD4_SLOT_CACHETHIS)
-			op->status = nfserr_rep_too_big_to_cache;
-		else
-			op->status = nfserr_rep_too_big;
-	}
 	if (so) {
 		so->so_replay.rp_status = op->status;
 		so->so_replay.rp_buflen = (char *)resp->p - (char *)(statp+1);
diff --git a/fs/open.c b/fs/open.c
index 3d30eb1..9d64679 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -254,17 +254,22 @@
 		return -EBADF;
 
 	/*
-	 * It's not possible to punch hole or perform collapse range
-	 * on append only file
+	 * We can only allow pure fallocate on append only files
 	 */
-	if (mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_COLLAPSE_RANGE)
-	    && IS_APPEND(inode))
+	if ((mode & ~FALLOC_FL_KEEP_SIZE) && IS_APPEND(inode))
 		return -EPERM;
 
 	if (IS_IMMUTABLE(inode))
 		return -EPERM;
 
 	/*
+	 * We can not allow to do any fallocate operation on an active
+	 * swapfile
+	 */
+	if (IS_SWAPFILE(inode))
+		ret = -ETXTBSY;
+
+	/*
 	 * Revalidate the write permissions, in case security policy has
 	 * changed since the files were opened.
 	 */
@@ -286,14 +291,6 @@
 	if (((offset + len) > inode->i_sb->s_maxbytes) || ((offset + len) < 0))
 		return -EFBIG;
 
-	/*
-	 * There is no need to overlap collapse range with EOF, in which case
-	 * it is effectively a truncate operation
-	 */
-	if ((mode & FALLOC_FL_COLLAPSE_RANGE) &&
-	    (offset + len >= i_size_read(inode)))
-		return -EINVAL;
-
 	if (!file->f_op->fallocate)
 		return -EOPNOTSUPP;
 
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index 82afdcb..951a232 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -841,7 +841,15 @@
 			goto out_unlock;
 		}
 
-		ASSERT(offset + len < i_size_read(inode));
+		/*
+		 * There is no need to overlap collapse range with EOF,
+		 * in which case it is effectively a truncate operation
+		 */
+		if (offset + len >= i_size_read(inode)) {
+			error = -EINVAL;
+			goto out_unlock;
+		}
+
 		new_size = i_size_read(inode) - len;
 
 		error = xfs_collapse_file_space(ip, offset, len);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 7a9c5bc..8780312 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -815,7 +815,7 @@
 #define FL_SLEEP	128	/* A blocking lock */
 #define FL_DOWNGRADE_PENDING	256 /* Lease is being downgraded */
 #define FL_UNLOCK_PENDING	512 /* Lease is being broken */
-#define FL_FILE_PVT	1024	/* lock is private to the file */
+#define FL_OFDLCK	1024	/* lock is "owned" by struct file */
 
 /*
  * Special return value from posix_lock_file() and vfs_lock_file() for
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 1de36be..5ab4e3a 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -822,6 +822,7 @@
 	unsigned long		qc_allocated;
 	unsigned int		qc_active;
 	int			nr_active_links; /* #links with active qcs */
+	unsigned int		last_tag;	/* track next tag hw expects */
 
 	struct ata_link		link;		/* host default link */
 	struct ata_link		*slave_link;	/* see ata_slave_link_init() */
diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h
index e530681..1a4a8c1 100644
--- a/include/linux/regulator/consumer.h
+++ b/include/linux/regulator/consumer.h
@@ -258,14 +258,14 @@
 static inline struct regulator *__must_check
 regulator_get_optional(struct device *dev, const char *id)
 {
-	return NULL;
+	return ERR_PTR(-ENODEV);
 }
 
 
 static inline struct regulator *__must_check
 devm_regulator_get_optional(struct device *dev, const char *id)
 {
-	return NULL;
+	return ERR_PTR(-ENODEV);
 }
 
 static inline void regulator_put(struct regulator *regulator)
diff --git a/include/linux/serio.h b/include/linux/serio.h
index 36aac73..9f779c7 100644
--- a/include/linux/serio.h
+++ b/include/linux/serio.h
@@ -23,6 +23,7 @@
 
 	char name[32];
 	char phys[32];
+	char firmware_id[128];
 
 	bool manual_bind;
 
diff --git a/include/trace/events/ext4.h b/include/trace/events/ext4.h
index 010ea89..6a1a024 100644
--- a/include/trace/events/ext4.h
+++ b/include/trace/events/ext4.h
@@ -16,15 +16,6 @@
 struct ext4_map_blocks;
 struct extent_status;
 
-/* shim until we merge in the xfs_collapse_range branch */
-#ifndef FALLOC_FL_COLLAPSE_RANGE
-#define FALLOC_FL_COLLAPSE_RANGE	0x08
-#endif
-
-#ifndef FALLOC_FL_ZERO_RANGE
-#define FALLOC_FL_ZERO_RANGE           0x10
-#endif
-
 #define EXT4_I(inode) (container_of(inode, struct ext4_inode_info, vfs_inode))
 
 #define show_mballoc_flags(flags) __print_flags(flags, "|",	\
diff --git a/include/uapi/asm-generic/fcntl.h b/include/uapi/asm-generic/fcntl.h
index a9b13f8..7543b3e 100644
--- a/include/uapi/asm-generic/fcntl.h
+++ b/include/uapi/asm-generic/fcntl.h
@@ -133,20 +133,20 @@
 #endif
 
 /*
- * fd "private" POSIX locks.
+ * Open File Description Locks
  *
- * Usually POSIX locks held by a process are released on *any* close and are
+ * Usually record locks held by a process are released on *any* close and are
  * not inherited across a fork().
  *
- * These cmd values will set locks that conflict with normal POSIX locks, but
- * are "owned" by the opened file, not the process. This means that they are
- * inherited across fork() like BSD (flock) locks, and they are only released
- * automatically when the last reference to the the open file against which
- * they were acquired is put.
+ * These cmd values will set locks that conflict with process-associated
+ * record  locks, but are "owned" by the open file description, not the
+ * process. This means that they are inherited across fork() like BSD (flock)
+ * locks, and they are only released automatically when the last reference to
+ * the the open file against which they were acquired is put.
  */
-#define F_GETLKP	36
-#define F_SETLKP	37
-#define F_SETLKPW	38
+#define F_OFD_GETLK	36
+#define F_OFD_SETLK	37
+#define F_OFD_SETLKW	38
 
 #define F_OWNER_TID	0
 #define F_OWNER_PID	1
diff --git a/include/uapi/linux/input.h b/include/uapi/linux/input.h
index bd24470..f484952 100644
--- a/include/uapi/linux/input.h
+++ b/include/uapi/linux/input.h
@@ -164,6 +164,7 @@
 #define INPUT_PROP_DIRECT		0x01	/* direct input devices */
 #define INPUT_PROP_BUTTONPAD		0x02	/* has button(s) under pad */
 #define INPUT_PROP_SEMI_MT		0x03	/* touch rectangle only */
+#define INPUT_PROP_TOPBUTTONPAD		0x04	/* softbuttons at top of pad */
 
 #define INPUT_PROP_MAX			0x1f
 #define INPUT_PROP_CNT			(INPUT_PROP_MAX + 1)
diff --git a/mm/memory.c b/mm/memory.c
index d0f0bef..93e332d 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1955,12 +1955,17 @@
 		     unsigned long address, unsigned int fault_flags)
 {
 	struct vm_area_struct *vma;
+	vm_flags_t vm_flags;
 	int ret;
 
 	vma = find_extend_vma(mm, address);
 	if (!vma || address < vma->vm_start)
 		return -EFAULT;
 
+	vm_flags = (fault_flags & FAULT_FLAG_WRITE) ? VM_WRITE : VM_READ;
+	if (!(vm_flags & vma->vm_flags))
+		return -EFAULT;
+
 	ret = handle_mm_fault(mm, vma, address, fault_flags);
 	if (ret & VM_FAULT_ERROR) {
 		if (ret & VM_FAULT_OOM)
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index b4beb77..2c7341d 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -3317,9 +3317,9 @@
 	case F_GETLK:
 	case F_SETLK:
 	case F_SETLKW:
-	case F_GETLKP:
-	case F_SETLKP:
-	case F_SETLKPW:
+	case F_OFD_GETLK:
+	case F_OFD_SETLK:
+	case F_OFD_SETLKW:
 #if BITS_PER_LONG == 32
 	case F_GETLK64:
 	case F_SETLK64: