Merge branches 'fixes' and 'misc' into for-next

Conflicts:
	arch/arm/kernel/iwmmxt.S
	arch/arm/mm/cache-l2x0.c
	arch/arm/mm/mmu.c

20 files changed, 124 insertions, 131 deletions

diff --git a/arch/arm/kernel/debug.S b/arch/arm/kernel/debug.S
index 14f7c3b14632..78c91b5f97d4 100644
--- a/arch/arm/kernel/debug.S
+++ b/arch/arm/kernel/debug.S
@@ -90,7 +90,7 @@ ENTRY(printascii)
 		ldrneb	r1, [r0], #1
 		teqne	r1, #0
 		bne	1b
-		mov	pc, lr
+		ret	lr
 ENDPROC(printascii)
 
 ENTRY(printch)
@@ -105,7 +105,7 @@ ENTRY(debug_ll_addr)
 		addruart r2, r3, ip
 		str	r2, [r0]
 		str	r3, [r1]
-		mov	pc, lr
+		ret	lr
 ENDPROC(debug_ll_addr)
 #endif
 
@@ -116,7 +116,7 @@ ENTRY(printascii)
 		mov	r0, #0x04		@ SYS_WRITE0
 	ARM(	svc	#0x123456	)
 	THUMB(	svc	#0xab		)
-		mov	pc, lr
+		ret	lr
 ENDPROC(printascii)
 
 ENTRY(printch)
@@ -125,14 +125,14 @@ ENTRY(printch)
 		mov	r0, #0x03		@ SYS_WRITEC
 	ARM(	svc	#0x123456	)
 	THUMB(	svc	#0xab		)
-		mov	pc, lr
+		ret	lr
 ENDPROC(printch)
 
 ENTRY(debug_ll_addr)
 		mov	r2, #0
 		str	r2, [r0]
 		str	r2, [r1]
-		mov	pc, lr
+		ret	lr
 ENDPROC(debug_ll_addr)
 
 #endif
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index 52a949a8077d..36276cdccfbc 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -224,7 +224,7 @@ svc_preempt:
 1:	bl	preempt_schedule_irq		@ irq en/disable is done inside
 	ldr	r0, [tsk, #TI_FLAGS]		@ get new tasks TI_FLAGS
 	tst	r0, #_TIF_NEED_RESCHED
-	moveq	pc, r8				@ go again
+	reteq	r8				@ go again
 	b	1b
 #endif
 
@@ -490,7 +490,7 @@ ENDPROC(__und_usr)
 	.pushsection .fixup, "ax"
 	.align	2
 4:	str     r4, [sp, #S_PC]			@ retry current instruction
-	mov	pc, r9
+	ret	r9
 	.popsection
 	.pushsection __ex_table,"a"
 	.long	1b, 4b
@@ -552,7 +552,7 @@ call_fpe:
 #endif
 	tst	r0, #0x08000000			@ only CDP/CPRT/LDC/STC have bit 27
 	tstne	r0, #0x04000000			@ bit 26 set on both ARM and Thumb-2
-	moveq	pc, lr
+	reteq	lr
 	and	r8, r0, #0x00000f00		@ mask out CP number
  THUMB(	lsr	r8, r8, #8		)
 	mov	r7, #1
@@ -571,33 +571,33 @@ call_fpe:
  THUMB(	add	pc, r8			)
 	nop
 
-	movw_pc	lr				@ CP#0
+	ret.w	lr				@ CP#0
 	W(b)	do_fpe				@ CP#1 (FPE)
 	W(b)	do_fpe				@ CP#2 (FPE)
-	movw_pc	lr				@ CP#3
+	ret.w	lr				@ CP#3
 #ifdef CONFIG_CRUNCH
 	b	crunch_task_enable		@ CP#4 (MaverickCrunch)
 	b	crunch_task_enable		@ CP#5 (MaverickCrunch)
 	b	crunch_task_enable		@ CP#6 (MaverickCrunch)
 #else
-	movw_pc	lr				@ CP#4
-	movw_pc	lr				@ CP#5
-	movw_pc	lr				@ CP#6
+	ret.w	lr				@ CP#4
+	ret.w	lr				@ CP#5
+	ret.w	lr				@ CP#6
 #endif
-	movw_pc	lr				@ CP#7
-	movw_pc	lr				@ CP#8
-	movw_pc	lr				@ CP#9
+	ret.w	lr				@ CP#7
+	ret.w	lr				@ CP#8
+	ret.w	lr				@ CP#9
 #ifdef CONFIG_VFP
 	W(b)	do_vfp				@ CP#10 (VFP)
 	W(b)	do_vfp				@ CP#11 (VFP)
 #else
-	movw_pc	lr				@ CP#10 (VFP)
-	movw_pc	lr				@ CP#11 (VFP)
+	ret.w	lr				@ CP#10 (VFP)
+	ret.w	lr				@ CP#11 (VFP)
 #endif
-	movw_pc	lr				@ CP#12
-	movw_pc	lr				@ CP#13
-	movw_pc	lr				@ CP#14 (Debug)
-	movw_pc	lr				@ CP#15 (Control)
+	ret.w	lr				@ CP#12
+	ret.w	lr				@ CP#13
+	ret.w	lr				@ CP#14 (Debug)
+	ret.w	lr				@ CP#15 (Control)
 
 #ifdef NEED_CPU_ARCHITECTURE
 	.align	2
@@ -649,7 +649,7 @@ ENTRY(fp_enter)
 	.popsection
 
 ENTRY(no_fp)
-	mov	pc, lr
+	ret	lr
 ENDPROC(no_fp)
 
 __und_usr_fault_32:
@@ -745,7 +745,7 @@ ENDPROC(__switch_to)
 #ifdef CONFIG_ARM_THUMB
 	bx	\reg
 #else
-	mov	pc, \reg
+	ret	\reg
 #endif
 	.endm
 
@@ -837,7 +837,7 @@ kuser_cmpxchg64_fixup:
 #if __LINUX_ARM_ARCH__ < 6
 	bcc	kuser_cmpxchg32_fixup
 #endif
-	mov	pc, lr
+	ret	lr
 	.previous
 
 #else
@@ -905,7 +905,7 @@ kuser_cmpxchg32_fixup:
 	subs	r8, r4, r7
 	rsbcss	r8, r8, #(2b - 1b)
 	strcs	r7, [sp, #S_PC]
-	mov	pc, lr
+	ret	lr
 	.previous
 
 #else
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index 7139d4a7dea7..e52fe5a2d843 100644
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -8,6 +8,7 @@
  * published by the Free Software Foundation.
  */
 
+#include <asm/assembler.h>
 #include <asm/unistd.h>
 #include <asm/ftrace.h>
 #include <asm/unwind.h>
@@ -88,7 +89,7 @@ ENTRY(ret_from_fork)
 	cmp	r5, #0
 	movne	r0, r4
 	adrne	lr, BSYM(1f)
-	movne	pc, r5
+	retne	r5
 1:	get_thread_info tsk
 	b	ret_slow_syscall
 ENDPROC(ret_from_fork)
@@ -290,7 +291,7 @@ ENDPROC(ftrace_graph_caller_old)
 
 .macro mcount_exit
 	ldmia	sp!, {r0-r3, ip, lr}
-	mov	pc, ip
+	ret	ip
 .endm
 
 ENTRY(__gnu_mcount_nc)
@@ -298,7 +299,7 @@ UNWIND(.fnstart)
 #ifdef CONFIG_DYNAMIC_FTRACE
 	mov	ip, lr
 	ldmia	sp!, {lr}
-	mov	pc, ip
+	ret	ip
 #else
 	__mcount
 #endif
@@ -333,12 +334,12 @@ return_to_handler:
 	bl	ftrace_return_to_handler
 	mov	lr, r0			@ r0 has real ret addr
 	ldmia	sp!, {r0-r3}
-	mov	pc, lr
+	ret	lr
 #endif
 
 ENTRY(ftrace_stub)
 .Lftrace_stub:
-	mov	pc, lr
+	ret	lr
 ENDPROC(ftrace_stub)
 
 #endif /* CONFIG_FUNCTION_TRACER */
@@ -561,7 +562,7 @@ sys_mmap2:
 		streq	r5, [sp, #4]
 		beq	sys_mmap_pgoff
 		mov	r0, #-EINVAL
-		mov	pc, lr
+		ret	lr
 #else
 		str	r5, [sp, #4]
 		b	sys_mmap_pgoff
diff --git a/arch/arm/kernel/entry-header.S b/arch/arm/kernel/entry-header.S
index 5d702f8900b1..8db307d0954b 100644
--- a/arch/arm/kernel/entry-header.S
+++ b/arch/arm/kernel/entry-header.S
@@ -240,12 +240,6 @@
 	movs	pc, lr				@ return & move spsr_svc into cpsr
 	.endm
 
-	@
-	@ 32-bit wide "mov pc, reg"
-	@
-	.macro	movw_pc, reg
-	mov	pc, \reg
-	.endm
 #else	/* CONFIG_THUMB2_KERNEL */
 	.macro	svc_exit, rpsr, irq = 0
 	.if	\irq != 0
@@ -304,14 +298,6 @@
 	movs	pc, lr				@ return & move spsr_svc into cpsr
 	.endm
 #endif	/* ifdef CONFIG_CPU_V7M / else */
-
-	@
-	@ 32-bit wide "mov pc, reg"
-	@
-	.macro	movw_pc, reg
-	mov	pc, \reg
-	nop
-	.endm
 #endif	/* !CONFIG_THUMB2_KERNEL */
 
 /*
diff --git a/arch/arm/kernel/fiqasm.S b/arch/arm/kernel/fiqasm.S
index 207f9d652010..8dd26e1a9bd6 100644
--- a/arch/arm/kernel/fiqasm.S
+++ b/arch/arm/kernel/fiqasm.S
@@ -32,7 +32,7 @@ ENTRY(__set_fiq_regs)
 	ldr	lr, [r0]
 	msr	cpsr_c, r1	@ return to SVC mode
 	mov	r0, r0		@ avoid hazard prior to ARMv4
-	mov	pc, lr
+	ret	lr
 ENDPROC(__set_fiq_regs)
 
 ENTRY(__get_fiq_regs)
@@ -45,5 +45,5 @@ ENTRY(__get_fiq_regs)
 	str	lr, [r0]
 	msr	cpsr_c, r1	@ return to SVC mode
 	mov	r0, r0		@ avoid hazard prior to ARMv4
-	mov	pc, lr
+	ret	lr
 ENDPROC(__get_fiq_regs)
diff --git a/arch/arm/kernel/head-common.S b/arch/arm/kernel/head-common.S
index 572a38335c96..8733012d231f 100644
--- a/arch/arm/kernel/head-common.S
+++ b/arch/arm/kernel/head-common.S
@@ -10,6 +10,7 @@
  * published by the Free Software Foundation.
  *
  */
+#include <asm/assembler.h>
 
 #define ATAG_CORE 0x54410001
 #define ATAG_CORE_SIZE ((2*4 + 3*4) >> 2)
@@ -61,10 +62,10 @@ __vet_atags:
 	cmp	r5, r6
 	bne	1f
 
-2:	mov	pc, lr				@ atag/dtb pointer is ok
+2:	ret	lr				@ atag/dtb pointer is ok
 
 1:	mov	r2, #0
-	mov	pc, lr
+	ret	lr
 ENDPROC(__vet_atags)
 
 /*
@@ -162,7 +163,7 @@ __lookup_processor_type:
 	cmp	r5, r6
 	blo	1b
 	mov	r5, #0				@ unknown processor
-2:	mov	pc, lr
+2:	ret	lr
 ENDPROC(__lookup_processor_type)
 
 /*
diff --git a/arch/arm/kernel/head-nommu.S b/arch/arm/kernel/head-nommu.S
index 716249cc2ee1..cc176b67c134 100644
--- a/arch/arm/kernel/head-nommu.S
+++ b/arch/arm/kernel/head-nommu.S
@@ -82,7 +82,7 @@ ENTRY(stext)
 	adr	lr, BSYM(1f)			@ return (PIC) address
  ARM(	add	pc, r10, #PROCINFO_INITFUNC	)
  THUMB(	add	r12, r10, #PROCINFO_INITFUNC	)
- THUMB(	mov	pc, r12				)
+ THUMB(	ret	r12				)
  1:	b	__after_proc_init
 ENDPROC(stext)
 
@@ -119,7 +119,7 @@ ENTRY(secondary_startup)
 	mov	r13, r12			@ __secondary_switched address
  ARM(	add	pc, r10, #PROCINFO_INITFUNC	)
  THUMB(	add	r12, r10, #PROCINFO_INITFUNC	)
- THUMB(	mov	pc, r12				)
+ THUMB(	ret	r12				)
 ENDPROC(secondary_startup)
 
 ENTRY(__secondary_switched)
@@ -164,7 +164,7 @@ __after_proc_init:
 #endif
 	mcr	p15, 0, r0, c1, c0, 0		@ write control reg
 #endif /* CONFIG_CPU_CP15 */
-	mov	pc, r13
+	ret	r13
 ENDPROC(__after_proc_init)
 	.ltorg
 
@@ -254,7 +254,7 @@ ENTRY(__setup_mpu)
 	orr	r0, r0, #CR_M			@ Set SCTRL.M (MPU on)
 	mcr	p15, 0, r0, c1, c0, 0		@ Enable MPU
 	isb
-	mov pc,lr
+	ret	lr
 ENDPROC(__setup_mpu)
 #endif
 #include "head-common.S"
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index 2c35f0ff2fdc..664eee8c4a26 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -140,7 +140,7 @@ ENTRY(stext)
 	mov	r8, r4				@ set TTBR1 to swapper_pg_dir
  ARM(	add	pc, r10, #PROCINFO_INITFUNC	)
  THUMB(	add	r12, r10, #PROCINFO_INITFUNC	)
- THUMB(	mov	pc, r12				)
+ THUMB(	ret	r12				)
 1:	b	__enable_mmu
 ENDPROC(stext)
 	.ltorg
@@ -335,7 +335,7 @@ __create_page_tables:
 	sub	r4, r4, #0x1000		@ point to the PGD table
 	mov	r4, r4, lsr #ARCH_PGD_SHIFT
 #endif
-	mov	pc, lr
+	ret	lr
 ENDPROC(__create_page_tables)
 	.ltorg
 	.align
@@ -383,7 +383,7 @@ ENTRY(secondary_startup)
  ARM(	add	pc, r10, #PROCINFO_INITFUNC	) @ initialise processor
 						  @ (return control reg)
  THUMB(	add	r12, r10, #PROCINFO_INITFUNC	)
- THUMB(	mov	pc, r12				)
+ THUMB(	ret	r12				)
 ENDPROC(secondary_startup)
 
 	/*
@@ -468,7 +468,7 @@ ENTRY(__turn_mmu_on)
 	instr_sync
 	mov	r3, r3
 	mov	r3, r13
-	mov	pc, r3
+	ret	r3
 __turn_mmu_on_end:
 ENDPROC(__turn_mmu_on)
 	.popsection
@@ -487,7 +487,7 @@ __fixup_smp:
 	orr	r4, r4, #0x0000b000
 	orr	r4, r4, #0x00000020	@ val 0x4100b020
 	teq	r3, r4			@ ARM 11MPCore?
-	moveq	pc, lr			@ yes, assume SMP
+	reteq	lr			@ yes, assume SMP
 
 	mrc	p15, 0, r0, c0, c0, 5	@ read MPIDR
 	and	r0, r0, #0xc0000000	@ multiprocessing extensions and
@@ -500,7 +500,7 @@ __fixup_smp:
 	orr	r4, r4, #0x0000c000
 	orr	r4, r4, #0x00000090
 	teq	r3, r4			@ Check for ARM Cortex-A9
-	movne	pc, lr			@ Not ARM Cortex-A9,
+	retne	lr			@ Not ARM Cortex-A9,
 
 	@ If a future SoC *does* use 0x0 as the PERIPH_BASE, then the
 	@ below address check will need to be #ifdef'd or equivalent
@@ -512,7 +512,7 @@ __fixup_smp:
 ARM_BE8(rev	r0, r0)			@ byteswap if big endian
 	and	r0, r0, #0x3		@ number of CPUs
 	teq	r0, #0x0		@ is 1?
-	movne	pc, lr
+	retne	lr
 
 __fixup_smp_on_up:
 	adr	r0, 1f
@@ -539,7 +539,7 @@ smp_on_up:
 	.text
 __do_fixup_smp_on_up:
 	cmp	r4, r5
-	movhs	pc, lr
+	reths	lr
 	ldmia	r4!, {r0, r6}
  ARM(	str	r6, [r0, r3]	)
  THUMB(	add	r0, r0, r3	)
@@ -672,7 +672,7 @@ ARM_BE8(rev16	ip, ip)
 2:	cmp	r4, r5
 	ldrcc	r7, [r4], #4	@ use branch for delay slot
 	bcc	1b
-	mov	pc, lr
+	ret	lr
 #endif
 ENDPROC(__fixup_a_pv_table)
 
diff --git a/arch/arm/kernel/hyp-stub.S b/arch/arm/kernel/hyp-stub.S
index 797b1a6a4906..56ce6290c831 100644
--- a/arch/arm/kernel/hyp-stub.S
+++ b/arch/arm/kernel/hyp-stub.S
@@ -99,7 +99,7 @@ ENTRY(__hyp_stub_install_secondary)
 	 * immediately.
 	 */
 	compare_cpu_mode_with_primary	r4, r5, r6, r7
-	movne	pc, lr
+	retne	lr
 
 	/*
 	 * Once we have given up on one CPU, we do not try to install the
@@ -111,7 +111,7 @@ ENTRY(__hyp_stub_install_secondary)
 	 */
 
 	cmp	r4, #HYP_MODE
-	movne	pc, lr			@ give up if the CPU is not in HYP mode
+	retne	lr			@ give up if the CPU is not in HYP mode
 
 /*
  * Configure HSCTLR to set correct exception endianness/instruction set
@@ -201,7 +201,7 @@ ENDPROC(__hyp_get_vectors)
 	@ fall through
 ENTRY(__hyp_set_vectors)
 	__HVC(0)
-	mov	pc, lr
+	ret	lr
 ENDPROC(__hyp_set_vectors)
 
 #ifndef ZIMAGE
diff --git a/arch/arm/kernel/iwmmxt.S b/arch/arm/kernel/iwmmxt.S
index 2b32978ae905..ad58e565fe98 100644
--- a/arch/arm/kernel/iwmmxt.S
+++ b/arch/arm/kernel/iwmmxt.S
@@ -100,7 +100,7 @@ ENTRY(iwmmxt_task_enable)
 	get_thread_info r10
 #endif
 4:	dec_preempt_count r10, r3
-	mov	pc, r9				@ normal exit from exception
+	ret	r9				@ normal exit from exception
 
 concan_save:
 
@@ -144,7 +144,7 @@ concan_dump:
 	wstrd	wR15, [r1, #MMX_WR15]
 
 2:	teq	r0, #0				@ anything to load?
-	moveq	pc, lr				@ if not, return
+	reteq	lr				@ if not, return
 
 concan_load:
 
@@ -177,10 +177,10 @@ concan_load:
 	@ clear CUP/MUP (only if r1 != 0)
 	teq	r1, #0
 	mov 	r2, #0
-	moveq	pc, lr
+	reteq	lr
 
 	tmcr	wCon, r2
-	mov	pc, lr
+	ret	lr
 
 /*
  * Back up Concan regs to save area and disable access to them
@@ -266,7 +266,7 @@ ENTRY(iwmmxt_task_copy)
 	mov	r3, lr				@ preserve return address
 	bl	concan_dump
 	msr	cpsr_c, ip			@ restore interrupt mode
-	mov	pc, r3
+	ret	r3
 
 /*
  * Restore Concan state from given memory address
@@ -302,7 +302,7 @@ ENTRY(iwmmxt_task_restore)
 	mov	r3, lr				@ preserve return address
 	bl	concan_load
 	msr	cpsr_c, ip			@ restore interrupt mode
-	mov	pc, r3
+	ret	r3
 
 /*
  * Concan handling on task switch
@@ -324,7 +324,7 @@ ENTRY(iwmmxt_task_switch)
 	add	r3, r0, #TI_IWMMXT_STATE	@ get next task Concan save area
 	ldr	r2, [r2]			@ get current Concan owner
 	teq	r2, r3				@ next task owns it?
-	movne	pc, lr				@ no: leave Concan disabled
+	retne	lr				@ no: leave Concan disabled
 
 1:	@ flip Concan access
 	XSC(eor	r1, r1, #0x3)
@@ -351,7 +351,7 @@ ENTRY(iwmmxt_task_release)
 	eors	r0, r0, r1			@ if equal...
 	streq	r0, [r3]			@ then clear ownership
 	msr	cpsr_c, r2			@ restore interrupts
-	mov	pc, lr
+	ret	lr
 
 	.data
 concan_owner:
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index 4238bcba9d60..ae3e216a52c2 100644
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -621,10 +621,7 @@ perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs)
 		return;
 	}
 
-	fr.fp = regs->ARM_fp;
-	fr.sp = regs->ARM_sp;
-	fr.lr = regs->ARM_lr;
-	fr.pc = regs->ARM_pc;
+	arm_get_current_stackframe(regs, &fr);
 	walk_stackframe(&fr, callchain_trace, entry);
 }
 
diff --git a/arch/arm/kernel/perf_event_cpu.c b/arch/arm/kernel/perf_event_cpu.c
index af9e35e8836f..c02c2e8c877d 100644
--- a/arch/arm/kernel/perf_event_cpu.c
+++ b/arch/arm/kernel/perf_event_cpu.c
@@ -250,40 +250,39 @@ static struct platform_device_id cpu_pmu_plat_device_ids[] = {
 static int probe_current_pmu(struct arm_pmu *pmu)
 {
 	int cpu = get_cpu();
-	unsigned long implementor = read_cpuid_implementor();
-	unsigned long part_number = read_cpuid_part_number();
 	int ret = -ENODEV;
 
 	pr_info("probing PMU on CPU %d\n", cpu);
 
+	switch (read_cpuid_part()) {
 	/* ARM Ltd CPUs. */
-	if (implementor == ARM_CPU_IMP_ARM) {
-		switch (part_number) {
-		case ARM_CPU_PART_ARM1136:
-		case ARM_CPU_PART_ARM1156:
-		case ARM_CPU_PART_ARM1176:
-			ret = armv6pmu_init(pmu);
-			break;
-		case ARM_CPU_PART_ARM11MPCORE:
-			ret = armv6mpcore_pmu_init(pmu);
-			break;
-		case ARM_CPU_PART_CORTEX_A8:
-			ret = armv7_a8_pmu_init(pmu);
-			break;
-		case ARM_CPU_PART_CORTEX_A9:
-			ret = armv7_a9_pmu_init(pmu);
-			break;
-		}
-	/* Intel CPUs [xscale]. */
-	} else if (implementor == ARM_CPU_IMP_INTEL) {
-		switch (xscale_cpu_arch_version()) {
-		case ARM_CPU_XSCALE_ARCH_V1:
-			ret = xscale1pmu_init(pmu);
-			break;
-		case ARM_CPU_XSCALE_ARCH_V2:
-			ret = xscale2pmu_init(pmu);
-			break;
+	case ARM_CPU_PART_ARM1136:
+	case ARM_CPU_PART_ARM1156:
+	case ARM_CPU_PART_ARM1176:
+		ret = armv6pmu_init(pmu);
+		break;
+	case ARM_CPU_PART_ARM11MPCORE:
+		ret = armv6mpcore_pmu_init(pmu);
+		break;
+	case ARM_CPU_PART_CORTEX_A8:
+		ret = armv7_a8_pmu_init(pmu);
+		break;
+	case ARM_CPU_PART_CORTEX_A9:
+		ret = armv7_a9_pmu_init(pmu);
+		break;
+
+	default:
+		if (read_cpuid_implementor() == ARM_CPU_IMP_INTEL) {
+			switch (xscale_cpu_arch_version()) {
+			case ARM_CPU_XSCALE_ARCH_V1:
+				ret = xscale1pmu_init(pmu);
+				break;
+			case ARM_CPU_XSCALE_ARCH_V2:
+				ret = xscale2pmu_init(pmu);
+				break;
+			}
 		}
+		break;
 	}
 
 	put_cpu();
diff --git a/arch/arm/kernel/relocate_kernel.S b/arch/arm/kernel/relocate_kernel.S
index 95858966d84e..35e72585ec1d 100644
--- a/arch/arm/kernel/relocate_kernel.S
+++ b/arch/arm/kernel/relocate_kernel.S
@@ -3,6 +3,7 @@
  */
 
 #include <linux/linkage.h>
+#include <asm/assembler.h>
 #include <asm/kexec.h>
 
 	.align	3	/* not needed for this code, but keeps fncpy() happy */
@@ -59,7 +60,7 @@ ENTRY(relocate_new_kernel)
 	mov r0,#0
 	ldr r1,kexec_mach_type
 	ldr r2,kexec_boot_atags
- ARM(	mov pc, lr	)
+ ARM(	ret lr	)
  THUMB(	bx lr		)
 
 	.align
diff --git a/arch/arm/kernel/sleep.S b/arch/arm/kernel/sleep.S
index 1b880db2a033..e1e60e5a7a27 100644
--- a/arch/arm/kernel/sleep.S
+++ b/arch/arm/kernel/sleep.S
@@ -107,7 +107,7 @@ ENTRY(cpu_resume_mmu)
 	instr_sync
 	mov	r0, r0
 	mov	r0, r0
-	mov	pc, r3			@ jump to virtual address
+	ret	r3			@ jump to virtual address
 ENDPROC(cpu_resume_mmu)
 	.popsection
 cpu_resume_after_mmu:
diff --git a/arch/arm/kernel/smp_scu.c b/arch/arm/kernel/smp_scu.c
index 1aafa0d785eb..72f9241ad5db 100644
--- a/arch/arm/kernel/smp_scu.c
+++ b/arch/arm/kernel/smp_scu.c
@@ -17,6 +17,8 @@
 #include <asm/cputype.h>
 
 #define SCU_CTRL		0x00
+#define SCU_ENABLE		(1 << 0)
+#define SCU_STANDBY_ENABLE	(1 << 5)
 #define SCU_CONFIG		0x04
 #define SCU_CPU_STATUS		0x08
 #define SCU_INVALIDATE		0x0c
@@ -50,10 +52,16 @@ void scu_enable(void __iomem *scu_base)
 
 	scu_ctrl = readl_relaxed(scu_base + SCU_CTRL);
 	/* already enabled? */
-	if (scu_ctrl & 1)
+	if (scu_ctrl & SCU_ENABLE)
 		return;
 
-	scu_ctrl |= 1;
+	scu_ctrl |= SCU_ENABLE;
+
+	/* Cortex-A9 earlier than r2p0 has no standby bit in SCU */
+	if ((read_cpuid_id() & 0xff0ffff0) == 0x410fc090 &&
+	    (read_cpuid_id() & 0x00f0000f) >= 0x00200000)
+		scu_ctrl |= SCU_STANDBY_ENABLE;
+
 	writel_relaxed(scu_ctrl, scu_base + SCU_CTRL);
 
 	/*
diff --git a/arch/arm/kernel/smp_tlb.c b/arch/arm/kernel/smp_tlb.c
index 95d063620b76..2e72be4f623e 100644
--- a/arch/arm/kernel/smp_tlb.c
+++ b/arch/arm/kernel/smp_tlb.c
@@ -92,15 +92,19 @@ void erratum_a15_798181_init(void)
 	unsigned int midr = read_cpuid_id();
 	unsigned int revidr = read_cpuid(CPUID_REVIDR);
 
-	/* Cortex-A15 r0p0..r3p2 w/o ECO fix affected */
-	if ((midr & 0xff0ffff0) != 0x410fc0f0 || midr > 0x413fc0f2 ||
-	    (revidr & 0x210) == 0x210) {
-		return;
-	}
-	if (revidr & 0x10)
-		erratum_a15_798181_handler = erratum_a15_798181_partial;
-	else
+	/* Brahma-B15 r0p0..r0p2 affected
+	 * Cortex-A15 r0p0..r3p2 w/o ECO fix affected */
+	if ((midr & 0xff0ffff0) == 0x420f00f0 && midr <= 0x420f00f2)
 		erratum_a15_798181_handler = erratum_a15_798181_broadcast;
+	else if ((midr & 0xff0ffff0) == 0x410fc0f0 && midr <= 0x413fc0f2 &&
+		 (revidr & 0x210) != 0x210) {
+		if (revidr & 0x10)
+			erratum_a15_798181_handler =
+				erratum_a15_798181_partial;
+		else
+			erratum_a15_798181_handler =
+				erratum_a15_798181_broadcast;
+	}
 }
 #endif
 
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index 829a96d4a179..0cc7e58c47cc 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -50,10 +50,7 @@ unsigned long profile_pc(struct pt_regs *regs)
 	if (!in_lock_functions(regs->ARM_pc))
 		return regs->ARM_pc;
 
-	frame.fp = regs->ARM_fp;
-	frame.sp = regs->ARM_sp;
-	frame.lr = regs->ARM_lr;
-	frame.pc = regs->ARM_pc;
+	arm_get_current_stackframe(regs, &frame);
 	do {
 		int ret = unwind_frame(&frame);
 		if (ret < 0)
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index abd2fc067736..c8e4bb714944 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -31,11 +31,13 @@
 #include <asm/exception.h>
 #include <asm/unistd.h>
 #include <asm/traps.h>
+#include <asm/ptrace.h>
 #include <asm/unwind.h>
 #include <asm/tls.h>
 #include <asm/system_misc.h>
 #include <asm/opcodes.h>
 
+
 static const char *handler[]= {
 	"prefetch abort",
 	"data abort",
@@ -184,7 +186,7 @@ static void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk)
 		tsk = current;
 
 	if (regs) {
-		fp = regs->ARM_fp;
+		fp = frame_pointer(regs);
 		mode = processor_mode(regs);
 	} else if (tsk != current) {
 		fp = thread_saved_fp(tsk);
@@ -719,7 +721,7 @@ asmlinkage int arm_syscall(int no, struct pt_regs *regs)
 		dump_instr("", regs);
 		if (user_mode(regs)) {
 			__show_regs(regs);
-			c_backtrace(regs->ARM_fp, processor_mode(regs));
+			c_backtrace(frame_pointer(regs), processor_mode(regs));
 		}
 	}
 #endif
diff --git a/arch/arm/kernel/unwind.c b/arch/arm/kernel/unwind.c
index e67682f02cb2..a61a1dfbb0db 100644
--- a/arch/arm/kernel/unwind.c
+++ b/arch/arm/kernel/unwind.c
@@ -479,12 +479,10 @@ void unwind_backtrace(struct pt_regs *regs, struct task_struct *tsk)
 		tsk = current;
 
 	if (regs) {
-		frame.fp = regs->ARM_fp;
-		frame.sp = regs->ARM_sp;
-		frame.lr = regs->ARM_lr;
+		arm_get_current_stackframe(regs, &frame);
 		/* PC might be corrupted, use LR in that case. */
-		frame.pc = kernel_text_address(regs->ARM_pc)
-			 ? regs->ARM_pc : regs->ARM_lr;
+		if (!kernel_text_address(regs->ARM_pc))
+			frame.pc = regs->ARM_lr;
 	} else if (tsk == current) {
 		frame.fp = (unsigned long)__builtin_frame_address(0);
 		frame.sp = current_sp;
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index 7bcee5c9b604..6f57cb94367f 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -318,7 +318,6 @@ SECTIONS
 	_end = .;
 
 	STABS_DEBUG
-	.comment 0 : { *(.comment) }
 }
 
 /*