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authorLinus Torvalds <torvalds@linux-foundation.org>2013-03-03 11:54:39 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-03-03 11:54:39 -0800
commit529e5fbcd8d3cb48cf824ac8fde91cc80a9e985f (patch)
tree5b6792ea3fe35ba3a2900978b1679d5d0a8bbee3
parent686c09407d24123755ee05aae5be680be886a233 (diff)
parent16af43fef87512f7324205783526f543ddcf09cf (diff)
downloadlinux-stericsson-529e5fbcd8d3cb48cf824ac8fde91cc80a9e985f.tar.gz
Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
Pull late ARM updates from Russell King: "Here is the late set of ARM updates for this merge window; in here is: - The ARM parts of the broadcast timer support, core parts merged through tglx's tree. This was left over from the previous merge to allow the dependency on tglx's tree to be resolved. - A fix to the VFP code which shows up on Raspberry Pi's, as well as fixing the fallout from a previous commit in this area. - A number of smaller fixes scattered throughout the ARM tree" * 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: ARM: Fix broken commit 0cc41e4a21d43 corrupting kernel messages ARM: fix scheduling while atomic warning in alignment handling code ARM: VFP: fix emulation of second VFP instruction ARM: 7656/1: uImage: Error out on build of multiplatform without LOADADDR ARM: 7640/1: memory: tegra_ahb_enable_smmu() depends on TEGRA_IOMMU_SMMU ARM: 7654/1: Preserve L_PTE_VALID in pte_modify() ARM: 7653/2: do not scale loops_per_jiffy when using a constant delay clock ARM: 7651/1: remove unused smp_timer_broadcast #define
-rw-r--r--arch/arm/boot/Makefile4
-rw-r--r--arch/arm/include/asm/delay.h1
-rw-r--r--arch/arm/include/asm/pgtable.h3
-rw-r--r--arch/arm/kernel/smp.c5
-rw-r--r--arch/arm/lib/delay.c1
-rw-r--r--arch/arm/mm/alignment.c11
-rw-r--r--arch/arm/vfp/vfphw.S36
-rw-r--r--arch/arm/vfp/vfpmodule.c2
-rw-r--r--drivers/amba/tegra-ahb.c2
9 files changed, 36 insertions, 29 deletions
diff --git a/arch/arm/boot/Makefile b/arch/arm/boot/Makefile
index abfce280f57b..71768b8a1ab9 100644
--- a/arch/arm/boot/Makefile
+++ b/arch/arm/boot/Makefile
@@ -68,8 +68,8 @@ else
endif
check_for_multiple_loadaddr = \
-if [ $(words $(UIMAGE_LOADADDR)) -gt 1 ]; then \
- echo 'multiple load addresses: $(UIMAGE_LOADADDR)'; \
+if [ $(words $(UIMAGE_LOADADDR)) -ne 1 ]; then \
+ echo 'multiple (or no) load addresses: $(UIMAGE_LOADADDR)'; \
echo 'This is incompatible with uImages'; \
echo 'Specify LOADADDR on the commandline to build an uImage'; \
false; \
diff --git a/arch/arm/include/asm/delay.h b/arch/arm/include/asm/delay.h
index ab98fdd083bd..720799fd3a81 100644
--- a/arch/arm/include/asm/delay.h
+++ b/arch/arm/include/asm/delay.h
@@ -24,6 +24,7 @@ extern struct arm_delay_ops {
void (*delay)(unsigned long);
void (*const_udelay)(unsigned long);
void (*udelay)(unsigned long);
+ bool const_clock;
} arm_delay_ops;
#define __delay(n) arm_delay_ops.delay(n)
diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h
index f30ac3b55ba9..80d6fc4dbe4a 100644
--- a/arch/arm/include/asm/pgtable.h
+++ b/arch/arm/include/asm/pgtable.h
@@ -247,7 +247,8 @@ static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
{
- const pteval_t mask = L_PTE_XN | L_PTE_RDONLY | L_PTE_USER | L_PTE_NONE;
+ const pteval_t mask = L_PTE_XN | L_PTE_RDONLY | L_PTE_USER |
+ L_PTE_NONE | L_PTE_VALID;
pte_val(pte) = (pte_val(pte) & ~mask) | (pgprot_val(newprot) & mask);
return pte;
}
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 5f73f7018f50..1bdfd87c8e41 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -466,8 +466,6 @@ void tick_broadcast(const struct cpumask *mask)
{
smp_cross_call(mask, IPI_TIMER);
}
-#else
-#define smp_timer_broadcast NULL
#endif
static void broadcast_timer_set_mode(enum clock_event_mode mode,
@@ -674,6 +672,9 @@ static int cpufreq_callback(struct notifier_block *nb,
if (freq->flags & CPUFREQ_CONST_LOOPS)
return NOTIFY_OK;
+ if (arm_delay_ops.const_clock)
+ return NOTIFY_OK;
+
if (!per_cpu(l_p_j_ref, cpu)) {
per_cpu(l_p_j_ref, cpu) =
per_cpu(cpu_data, cpu).loops_per_jiffy;
diff --git a/arch/arm/lib/delay.c b/arch/arm/lib/delay.c
index 0dc53854a5d8..6b93f6a1a3c7 100644
--- a/arch/arm/lib/delay.c
+++ b/arch/arm/lib/delay.c
@@ -77,6 +77,7 @@ void __init register_current_timer_delay(const struct delay_timer *timer)
arm_delay_ops.delay = __timer_delay;
arm_delay_ops.const_udelay = __timer_const_udelay;
arm_delay_ops.udelay = __timer_udelay;
+ arm_delay_ops.const_clock = true;
delay_calibrated = true;
} else {
pr_info("Ignoring duplicate/late registration of read_current_timer delay\n");
diff --git a/arch/arm/mm/alignment.c b/arch/arm/mm/alignment.c
index b820edaf3184..db26e2e543f4 100644
--- a/arch/arm/mm/alignment.c
+++ b/arch/arm/mm/alignment.c
@@ -749,7 +749,6 @@ do_alignment(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
unsigned long instr = 0, instrptr;
int (*handler)(unsigned long addr, unsigned long instr, struct pt_regs *regs);
unsigned int type;
- mm_segment_t fs;
unsigned int fault;
u16 tinstr = 0;
int isize = 4;
@@ -760,16 +759,15 @@ do_alignment(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
instrptr = instruction_pointer(regs);
- fs = get_fs();
- set_fs(KERNEL_DS);
if (thumb_mode(regs)) {
- fault = __get_user(tinstr, (u16 *)(instrptr & ~1));
+ u16 *ptr = (u16 *)(instrptr & ~1);
+ fault = probe_kernel_address(ptr, tinstr);
if (!fault) {
if (cpu_architecture() >= CPU_ARCH_ARMv7 &&
IS_T32(tinstr)) {
/* Thumb-2 32-bit */
u16 tinst2 = 0;
- fault = __get_user(tinst2, (u16 *)(instrptr+2));
+ fault = probe_kernel_address(ptr + 1, tinst2);
instr = (tinstr << 16) | tinst2;
thumb2_32b = 1;
} else {
@@ -778,8 +776,7 @@ do_alignment(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
}
}
} else
- fault = __get_user(instr, (u32 *)instrptr);
- set_fs(fs);
+ fault = probe_kernel_address(instrptr, instr);
if (fault) {
type = TYPE_FAULT;
diff --git a/arch/arm/vfp/vfphw.S b/arch/arm/vfp/vfphw.S
index dd5e56f95f3f..8d10dc8a1e17 100644
--- a/arch/arm/vfp/vfphw.S
+++ b/arch/arm/vfp/vfphw.S
@@ -22,12 +22,14 @@
.macro DBGSTR, str
#ifdef DEBUG
stmfd sp!, {r0-r3, ip, lr}
- add r0, pc, #4
+ ldr r0, =1f
bl printk
- b 1f
- .asciz KERN_DEBUG "VFP: \str\n"
- .balign 4
-1: ldmfd sp!, {r0-r3, ip, lr}
+ ldmfd sp!, {r0-r3, ip, lr}
+
+ .pushsection .rodata, "a"
+1: .ascii KERN_DEBUG "VFP: \str\n"
+ .byte 0
+ .previous
#endif
.endm
@@ -35,12 +37,14 @@
#ifdef DEBUG
stmfd sp!, {r0-r3, ip, lr}
mov r1, \arg
- add r0, pc, #4
+ ldr r0, =1f
bl printk
- b 1f
- .asciz KERN_DEBUG "VFP: \str\n"
- .balign 4
-1: ldmfd sp!, {r0-r3, ip, lr}
+ ldmfd sp!, {r0-r3, ip, lr}
+
+ .pushsection .rodata, "a"
+1: .ascii KERN_DEBUG "VFP: \str\n"
+ .byte 0
+ .previous
#endif
.endm
@@ -50,12 +54,14 @@
mov r3, \arg3
mov r2, \arg2
mov r1, \arg1
- add r0, pc, #4
+ ldr r0, =1f
bl printk
- b 1f
- .asciz KERN_DEBUG "VFP: \str\n"
- .balign 4
-1: ldmfd sp!, {r0-r3, ip, lr}
+ ldmfd sp!, {r0-r3, ip, lr}
+
+ .pushsection .rodata, "a"
+1: .ascii KERN_DEBUG "VFP: \str\n"
+ .byte 0
+ .previous
#endif
.endm
diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c
index 3b44e0dd0a93..5dfbb0b8e7f4 100644
--- a/arch/arm/vfp/vfpmodule.c
+++ b/arch/arm/vfp/vfpmodule.c
@@ -413,7 +413,7 @@ void VFP_bounce(u32 trigger, u32 fpexc, struct pt_regs *regs)
* If there isn't a second FP instruction, exit now. Note that
* the FPEXC.FP2V bit is valid only if FPEXC.EX is 1.
*/
- if (fpexc ^ (FPEXC_EX | FPEXC_FP2V))
+ if ((fpexc & (FPEXC_EX | FPEXC_FP2V)) != (FPEXC_EX | FPEXC_FP2V))
goto exit;
/*
diff --git a/drivers/amba/tegra-ahb.c b/drivers/amba/tegra-ahb.c
index ab92785f54dc..093c43554963 100644
--- a/drivers/amba/tegra-ahb.c
+++ b/drivers/amba/tegra-ahb.c
@@ -130,7 +130,7 @@ static inline void gizmo_writel(struct tegra_ahb *ahb, u32 value, u32 offset)
writel(value, ahb->regs + offset);
}
-#ifdef CONFIG_ARCH_TEGRA_3x_SOC
+#ifdef CONFIG_TEGRA_IOMMU_SMMU
static int tegra_ahb_match_by_smmu(struct device *dev, void *data)
{
struct tegra_ahb *ahb = dev_get_drvdata(dev);