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

8 files changed, 35 insertions, 28 deletions

diff --git a/arch/arm/boot/Makefile b/arch/arm/boot/Makefile
index abfce280f57..71768b8a1ab 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 ab98fdd083b..720799fd3a8 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 f30ac3b55ba..80d6fc4dbe4 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 5f73f7018f5..1bdfd87c8e4 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 0dc53854a5d..6b93f6a1a3c 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 b820edaf318..db26e2e543f 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 dd5e56f95f3..8d10dc8a1e1 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 3b44e0dd0a9..5dfbb0b8e7f 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;
 
 	/*