Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM fixes from Russell King:
"Nothing too disasterous, the biggest thing being the removal of the
regulator support for vcore in the AMBA driver; only one SoC was using
this and it got broken during the last merge window, which then
started causing problems for other people. Mutual agreement was
reached for it to be removed."
* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
ARM: 7386/1: jump_label: fixup for rename to static_key
ARM: 7384/1: ThumbEE: Disable userspace TEEHBR access for !CONFIG_ARM_THUMBEE
ARM: 7382/1: mm: truncate memory banks to fit in 4GB space for classic MMU
ARM: 7359/2: smp_twd: Only wait for reprogramming on active cpus
ARM: 7383/1: nommu: populate vectors page from paging_init
ARM: 7381/1: nommu: fix typo in mm/Kconfig
ARM: 7380/1: DT: do not add a zero-sized memory property
ARM: 7379/1: DT: fix atags_to_fdt() second call site
ARM: 7366/3: amba: Remove AMBA level regulator support
ARM: 7377/1: vic: re-read status register before dispatching each IRQ handler
ARM: 7368/1: fault.c: correct how the tsk->[maj|min]_flt gets incremented
diff --git a/arch/arm/boot/compressed/atags_to_fdt.c b/arch/arm/boot/compressed/atags_to_fdt.c
index 6ce11c4..797f04b 100644
--- a/arch/arm/boot/compressed/atags_to_fdt.c
+++ b/arch/arm/boot/compressed/atags_to_fdt.c
@@ -77,6 +77,8 @@
} else if (atag->hdr.tag == ATAG_MEM) {
if (memcount >= sizeof(mem_reg_property)/4)
continue;
+ if (!atag->u.mem.size)
+ continue;
mem_reg_property[memcount++] = cpu_to_fdt32(atag->u.mem.start);
mem_reg_property[memcount++] = cpu_to_fdt32(atag->u.mem.size);
} else if (atag->hdr.tag == ATAG_INITRD2) {
diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S
index 5f6045f..dc7e8ce 100644
--- a/arch/arm/boot/compressed/head.S
+++ b/arch/arm/boot/compressed/head.S
@@ -273,7 +273,7 @@
add r0, r0, #0x100
mov r1, r6
sub r2, sp, r6
- blne atags_to_fdt
+ bleq atags_to_fdt
ldmfd sp!, {r0-r3, ip, lr}
sub sp, sp, #0x10000
diff --git a/arch/arm/common/vic.c b/arch/arm/common/vic.c
index 7a66311..7e288f9 100644
--- a/arch/arm/common/vic.c
+++ b/arch/arm/common/vic.c
@@ -427,19 +427,18 @@
/*
* Handle each interrupt in a single VIC. Returns non-zero if we've
- * handled at least one interrupt. This does a single read of the
- * status register and handles all interrupts in order from LSB first.
+ * handled at least one interrupt. This reads the status register
+ * before handling each interrupt, which is necessary given that
+ * handle_IRQ may briefly re-enable interrupts for soft IRQ handling.
*/
static int handle_one_vic(struct vic_device *vic, struct pt_regs *regs)
{
u32 stat, irq;
int handled = 0;
- stat = readl_relaxed(vic->base + VIC_IRQ_STATUS);
- while (stat) {
+ while ((stat = readl_relaxed(vic->base + VIC_IRQ_STATUS))) {
irq = ffs(stat) - 1;
handle_IRQ(irq_find_mapping(vic->domain, irq), regs);
- stat &= ~(1 << irq);
handled = 1;
}
diff --git a/arch/arm/include/asm/jump_label.h b/arch/arm/include/asm/jump_label.h
index 5c5ca2e..bfc198c 100644
--- a/arch/arm/include/asm/jump_label.h
+++ b/arch/arm/include/asm/jump_label.h
@@ -14,7 +14,7 @@
#define JUMP_LABEL_NOP "nop"
#endif
-static __always_inline bool arch_static_branch(struct jump_label_key *key)
+static __always_inline bool arch_static_branch(struct static_key *key)
{
asm goto("1:\n\t"
JUMP_LABEL_NOP "\n\t"
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index b914113..ebfac78 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -523,7 +523,21 @@
*/
size -= start & ~PAGE_MASK;
bank->start = PAGE_ALIGN(start);
- bank->size = size & PAGE_MASK;
+
+#ifndef CONFIG_LPAE
+ if (bank->start + size < bank->start) {
+ printk(KERN_CRIT "Truncating memory at 0x%08llx to fit in "
+ "32-bit physical address space\n", (long long)start);
+ /*
+ * To ensure bank->start + bank->size is representable in
+ * 32 bits, we use ULONG_MAX as the upper limit rather than 4GB.
+ * This means we lose a page after masking.
+ */
+ size = ULONG_MAX - bank->start;
+ }
+#endif
+
+ bank->size = size & PAGE_MASK;
/*
* Check whether this memory region has non-zero size or
diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c
index fef42b2..5b150af 100644
--- a/arch/arm/kernel/smp_twd.c
+++ b/arch/arm/kernel/smp_twd.c
@@ -118,10 +118,14 @@
* The twd clock events must be reprogrammed to account for the new
* frequency. The timer is local to a cpu, so cross-call to the
* changing cpu.
+ *
+ * Only wait for it to finish, if the cpu is active to avoid
+ * deadlock when cpu1 is spinning on while(!cpu_active(cpu1)) during
+ * booting of that cpu.
*/
if (state == CPUFREQ_POSTCHANGE || state == CPUFREQ_RESUMECHANGE)
smp_call_function_single(freqs->cpu, twd_update_frequency,
- NULL, 1);
+ NULL, cpu_active(freqs->cpu));
return NOTIFY_OK;
}
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 7edef91..7c8a7d8 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -723,7 +723,7 @@
bool "Select the High exception vector"
help
Say Y here to select high exception vector(0xFFFF0000~).
- The exception vector can be vary depending on the platform
+ The exception vector can vary depending on the platform
design in nommu mode. If your platform needs to select
high exception vector, say Y.
Otherwise or if you are unsure, say N, and the low exception
diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
index 9055b5a..f074675 100644
--- a/arch/arm/mm/fault.c
+++ b/arch/arm/mm/fault.c
@@ -320,7 +320,7 @@
*/
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, addr);
- if (flags & FAULT_FLAG_ALLOW_RETRY) {
+ if (!(fault & VM_FAULT_ERROR) && flags & FAULT_FLAG_ALLOW_RETRY) {
if (fault & VM_FAULT_MAJOR) {
tsk->maj_flt++;
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1,
diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c
index 6486d2f..d51225f 100644
--- a/arch/arm/mm/nommu.c
+++ b/arch/arm/mm/nommu.c
@@ -13,6 +13,7 @@
#include <asm/sections.h>
#include <asm/page.h>
#include <asm/setup.h>
+#include <asm/traps.h>
#include <asm/mach/arch.h>
#include "mm.h"
@@ -39,6 +40,7 @@
*/
void __init paging_init(struct machine_desc *mdesc)
{
+ early_trap_init((void *)CONFIG_VECTORS_BASE);
bootmem_init();
}
diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S
index f1c8486..c2e2b66 100644
--- a/arch/arm/mm/proc-v7.S
+++ b/arch/arm/mm/proc-v7.S
@@ -255,6 +255,18 @@
mcr p15, 0, r5, c10, c2, 0 @ write PRRR
mcr p15, 0, r6, c10, c2, 1 @ write NMRR
#endif
+#ifndef CONFIG_ARM_THUMBEE
+ mrc p15, 0, r0, c0, c1, 0 @ read ID_PFR0 for ThumbEE
+ and r0, r0, #(0xf << 12) @ ThumbEE enabled field
+ teq r0, #(1 << 12) @ check if ThumbEE is present
+ bne 1f
+ mov r5, #0
+ mcr p14, 6, r5, c1, c0, 0 @ Initialize TEEHBR to 0
+ mrc p14, 6, r0, c0, c0, 0 @ load TEECR
+ orr r0, r0, #1 @ set the 1st bit in order to
+ mcr p14, 6, r0, c0, c0, 0 @ stop userspace TEEHBR access
+1:
+#endif
adr r5, v7_crval
ldmia r5, {r5, r6}
#ifdef CONFIG_CPU_ENDIAN_BE8
diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c
index 01c2cf4..cc27322 100644
--- a/drivers/amba/bus.c
+++ b/drivers/amba/bus.c
@@ -247,8 +247,7 @@
/*
* Hooks to provide runtime PM of the pclk (bus clock). It is safe to
* enable/disable the bus clock at runtime PM suspend/resume as this
- * does not result in loss of context. However, disabling vcore power
- * would do, so we leave that to the driver.
+ * does not result in loss of context.
*/
static int amba_pm_runtime_suspend(struct device *dev)
{
@@ -354,39 +353,6 @@
clk_put(pclk);
}
-static int amba_get_enable_vcore(struct amba_device *pcdev)
-{
- struct regulator *vcore = regulator_get(&pcdev->dev, "vcore");
- int ret;
-
- pcdev->vcore = vcore;
-
- if (IS_ERR(vcore)) {
- /* It is OK not to supply a vcore regulator */
- if (PTR_ERR(vcore) == -ENODEV)
- return 0;
- return PTR_ERR(vcore);
- }
-
- ret = regulator_enable(vcore);
- if (ret) {
- regulator_put(vcore);
- pcdev->vcore = ERR_PTR(-ENODEV);
- }
-
- return ret;
-}
-
-static void amba_put_disable_vcore(struct amba_device *pcdev)
-{
- struct regulator *vcore = pcdev->vcore;
-
- if (!IS_ERR(vcore)) {
- regulator_disable(vcore);
- regulator_put(vcore);
- }
-}
-
/*
* These are the device model conversion veneers; they convert the
* device model structures to our more specific structures.
@@ -399,10 +365,6 @@
int ret;
do {
- ret = amba_get_enable_vcore(pcdev);
- if (ret)
- break;
-
ret = amba_get_enable_pclk(pcdev);
if (ret)
break;
@@ -420,7 +382,6 @@
pm_runtime_put_noidle(dev);
amba_put_disable_pclk(pcdev);
- amba_put_disable_vcore(pcdev);
} while (0);
return ret;
@@ -442,7 +403,6 @@
pm_runtime_put_noidle(dev);
amba_put_disable_pclk(pcdev);
- amba_put_disable_vcore(pcdev);
return ret;
}
diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c
index ebc1e86..5be3248 100644
--- a/drivers/mfd/db8500-prcmu.c
+++ b/drivers/mfd/db8500-prcmu.c
@@ -2788,6 +2788,7 @@
.constraints = {
.name = "db8500-vape",
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ .always_on = true,
},
.consumer_supplies = db8500_vape_consumers,
.num_consumer_supplies = ARRAY_SIZE(db8500_vape_consumers),
diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c
index 96f0da6..09c925a 100644
--- a/drivers/spi/spi-pl022.c
+++ b/drivers/spi/spi-pl022.c
@@ -2195,7 +2195,6 @@
struct pl022 *pl022 = dev_get_drvdata(dev);
clk_disable(pl022->clk);
- amba_vcore_disable(pl022->adev);
return 0;
}
@@ -2204,7 +2203,6 @@
{
struct pl022 *pl022 = dev_get_drvdata(dev);
- amba_vcore_enable(pl022->adev);
clk_enable(pl022->clk);
return 0;
diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h
index 7847e19..8d54f79 100644
--- a/include/linux/amba/bus.h
+++ b/include/linux/amba/bus.h
@@ -30,7 +30,6 @@
struct device dev;
struct resource res;
struct clk *pclk;
- struct regulator *vcore;
u64 dma_mask;
unsigned int periphid;
unsigned int irq[AMBA_NR_IRQS];
@@ -75,12 +74,6 @@
#define amba_pclk_disable(d) \
do { if (!IS_ERR((d)->pclk)) clk_disable((d)->pclk); } while (0)
-#define amba_vcore_enable(d) \
- (IS_ERR((d)->vcore) ? 0 : regulator_enable((d)->vcore))
-
-#define amba_vcore_disable(d) \
- do { if (!IS_ERR((d)->vcore)) regulator_disable((d)->vcore); } while (0)
-
/* Some drivers don't use the struct amba_device */
#define AMBA_CONFIG_BITS(a) (((a) >> 24) & 0xff)
#define AMBA_REV_BITS(a) (((a) >> 20) & 0x0f)
