10 files changed, 57 insertions, 32 deletions

diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S
index 80f7896cc016..9943e9e74a1b 100644
--- a/arch/arm/kernel/calls.S
+++ b/arch/arm/kernel/calls.S
@@ -178,7 +178,7 @@
                 CALL(sys_ni_syscall)            /* vm86 */
                 CALL(sys_ni_syscall)            /* was sys_query_module */
                 CALL(sys_poll)
-                CALL(sys_nfsservctl)
+                CALL(sys_ni_syscall)            /* was nfsservctl */
 /* 170 */       CALL(sys_setresgid16)
                 CALL(sys_getresgid16)
                 CALL(sys_prctl)
diff --git a/arch/arm/kernel/iwmmxt.S b/arch/arm/kernel/iwmmxt.S
index 7fa3bb0d2397..a08783823b32 100644
--- a/arch/arm/kernel/iwmmxt.S
+++ b/arch/arm/kernel/iwmmxt.S
@@ -195,10 +195,10 @@ ENTRY(iwmmxt_task_disable)
 
         @ enable access to CP0 and CP1
         XSC(mrc p15, 0, r4, c15, c1, 0)
-        XSC(orr r4, r4, #0xf)
+        XSC(orr r4, r4, #0x3)
         XSC(mcr p15, 0, r4, c15, c1, 0)
         PJ4(mrc p15, 0, r4, c1, c0, 2)
-        PJ4(orr r4, r4, #0x3)
+        PJ4(orr r4, r4, #0xf)
         PJ4(mcr p15, 0, r4, c1, c0, 2)
 
         mov     r0, #0                          @ nothing to load
@@ -313,7 +313,7 @@ ENTRY(iwmmxt_task_switch)
         teq     r2, r3                          @ next task owns it?
         movne   pc, lr                          @ no: leave Concan disabled
 
-1:      @ flip Conan access
+1:      @ flip Concan access
         XSC(eor r1, r1, #0x3)
         XSC(mcr p15, 0, r1, c15, c1, 0)
         PJ4(eor r1, r1, #0xf)
diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c
index 05b377616fd5..cc2020c2c709 100644
--- a/arch/arm/kernel/module.c
+++ b/arch/arm/kernel/module.c
@@ -323,7 +323,11 @@ int module_finalize(const Elf32_Ehdr *hdr, const Elf_Shdr *sechdrs,
 #endif
         s = find_mod_section(hdr, sechdrs, ".alt.smp.init");
         if (s && !is_smp())
+#ifdef CONFIG_SMP_ON_UP
                 fixup_smp((void *)s->sh_addr, s->sh_size);
+#else
+                return -EINVAL;
+#endif
         return 0;
 }
 
diff --git a/arch/arm/kernel/perf_event_v7.c b/arch/arm/kernel/perf_event_v7.c
index 4c851834f68e..6be3e2e4d838 100644
--- a/arch/arm/kernel/perf_event_v7.c
+++ b/arch/arm/kernel/perf_event_v7.c
@@ -321,8 +321,8 @@ static const unsigned armv7_a9_perf_map[PERF_COUNT_HW_MAX] = {
         [PERF_COUNT_HW_CPU_CYCLES]          = ARMV7_PERFCTR_CPU_CYCLES,
         [PERF_COUNT_HW_INSTRUCTIONS]        =
                                         ARMV7_PERFCTR_INST_OUT_OF_RENAME_STAGE,
-        [PERF_COUNT_HW_CACHE_REFERENCES]    = ARMV7_PERFCTR_COHERENT_LINE_HIT,
-        [PERF_COUNT_HW_CACHE_MISSES]        = ARMV7_PERFCTR_COHERENT_LINE_MISS,
+        [PERF_COUNT_HW_CACHE_REFERENCES]    = ARMV7_PERFCTR_DCACHE_ACCESS,
+        [PERF_COUNT_HW_CACHE_MISSES]        = ARMV7_PERFCTR_DCACHE_REFILL,
         [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_PC_WRITE,
         [PERF_COUNT_HW_BRANCH_MISSES]       = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
         [PERF_COUNT_HW_BUS_CYCLES]          = ARMV7_PERFCTR_CLOCK_CYCLES,
diff --git a/arch/arm/kernel/pmu.c b/arch/arm/kernel/pmu.c
index 2b70709376c3..c53474fe84df 100644
--- a/arch/arm/kernel/pmu.c
+++ b/arch/arm/kernel/pmu.c
@@ -31,7 +31,7 @@ static int __devinit pmu_register(struct platform_device *pdev,
 {
         if (type < 0 || type >= ARM_NUM_PMU_DEVICES) {
                 pr_warning("received registration request for unknown "
-                                "device %d\n", type);
+                                "PMU device type %d\n", type);
                 return -EINVAL;
         }
 
@@ -112,17 +112,17 @@ static int __init register_pmu_driver(void)
 device_initcall(register_pmu_driver);
 
 struct platform_device *
-reserve_pmu(enum arm_pmu_type device)
+reserve_pmu(enum arm_pmu_type type)
 {
         struct platform_device *pdev;
 
-        if (test_and_set_bit_lock(device, &pmu_lock)) {
+        if (test_and_set_bit_lock(type, &pmu_lock)) {
                 pdev = ERR_PTR(-EBUSY);
-        } else if (pmu_devices[device] == NULL) {
-                clear_bit_unlock(device, &pmu_lock);
+        } else if (pmu_devices[type] == NULL) {
+                clear_bit_unlock(type, &pmu_lock);
                 pdev = ERR_PTR(-ENODEV);
         } else {
-                pdev = pmu_devices[device];
+                pdev = pmu_devices[type];
         }
 
         return pdev;
@@ -130,11 +130,11 @@ reserve_pmu(enum arm_pmu_type device)
 EXPORT_SYMBOL_GPL(reserve_pmu);
 
 int
-release_pmu(enum arm_pmu_type device)
+release_pmu(enum arm_pmu_type type)
 {
-        if (WARN_ON(!pmu_devices[device]))
+        if (WARN_ON(!pmu_devices[type]))
                 return -EINVAL;
-        clear_bit_unlock(device, &pmu_lock);
+        clear_bit_unlock(type, &pmu_lock);
         return 0;
 }
 EXPORT_SYMBOL_GPL(release_pmu);
@@ -182,17 +182,17 @@ init_cpu_pmu(void)
 }
 
 int
-init_pmu(enum arm_pmu_type device)
+init_pmu(enum arm_pmu_type type)
 {
         int err = 0;
 
-        switch (device) {
+        switch (type) {
         case ARM_PMU_DEVICE_CPU:
                 err = init_cpu_pmu();
                 break;
         default:
-                pr_warning("attempt to initialise unknown device %d\n",
-                                device);
+                pr_warning("attempt to initialise PMU of unknown "
+                           "type %d\n", type);
                 err = -EINVAL;
         }
 
diff --git a/arch/arm/kernel/relocate_kernel.S b/arch/arm/kernel/relocate_kernel.S
index 9cf4cbf8f95b..d0cdedf4864d 100644
--- a/arch/arm/kernel/relocate_kernel.S
+++ b/arch/arm/kernel/relocate_kernel.S
@@ -57,7 +57,8 @@ relocate_new_kernel:
         mov r0,#0
         ldr r1,kexec_mach_type
         ldr r2,kexec_boot_atags
-        mov pc,lr
+ ARM(   mov pc, lr      )
+ THUMB( bx lr           )
 
         .align
 
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 70bca649e925..e514c76043b4 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -280,18 +280,19 @@ static void __init cacheid_init(void)
         if (arch >= CPU_ARCH_ARMv6) {
                 if ((cachetype & (7 << 29)) == 4 << 29) {
                         /* ARMv7 register format */
+                        arch = CPU_ARCH_ARMv7;
                         cacheid = CACHEID_VIPT_NONALIASING;
                         if ((cachetype & (3 << 14)) == 1 << 14)
                                 cacheid |= CACHEID_ASID_TAGGED;
-                        else if (cpu_has_aliasing_icache(CPU_ARCH_ARMv7))
-                                cacheid |= CACHEID_VIPT_I_ALIASING;
-                } else if (cachetype & (1 << 23)) {
-                        cacheid = CACHEID_VIPT_ALIASING;
                 } else {
-                        cacheid = CACHEID_VIPT_NONALIASING;
-                        if (cpu_has_aliasing_icache(CPU_ARCH_ARMv6))
-                                cacheid |= CACHEID_VIPT_I_ALIASING;
+                        arch = CPU_ARCH_ARMv6;
+                        if (cachetype & (1 << 23))
+                                cacheid = CACHEID_VIPT_ALIASING;
+                        else
+                                cacheid = CACHEID_VIPT_NONALIASING;
                 }
+                if (cpu_has_aliasing_icache(arch))
+                        cacheid |= CACHEID_VIPT_I_ALIASING;
         } else {
                 cacheid = CACHEID_VIVT;
         }
diff --git a/arch/arm/kernel/smp_scu.c b/arch/arm/kernel/smp_scu.c
index 79ed5e7f204a..7fcddb75c877 100644
--- a/arch/arm/kernel/smp_scu.c
+++ b/arch/arm/kernel/smp_scu.c
@@ -13,6 +13,7 @@
 
 #include <asm/smp_scu.h>
 #include <asm/cacheflush.h>
+#include <asm/cputype.h>
 
 #define SCU_CTRL                0x00
 #define SCU_CONFIG              0x04
@@ -37,6 +38,15 @@ void __init scu_enable(void __iomem *scu_base)
 {
         u32 scu_ctrl;
 
+#ifdef CONFIG_ARM_ERRATA_764369
+        /* Cortex-A9 only */
+        if ((read_cpuid(CPUID_ID) & 0xff0ffff0) == 0x410fc090) {
+                scu_ctrl = __raw_readl(scu_base + 0x30);
+                if (!(scu_ctrl & 1))
+                        __raw_writel(scu_ctrl | 0x1, scu_base + 0x30);
+        }
+#endif
+
         scu_ctrl = __raw_readl(scu_base + SCU_CTRL);
         /* already enabled? */
         if (scu_ctrl & 1)
diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c
index 2c277d40cee6..01c186222f3b 100644
--- a/arch/arm/kernel/smp_twd.c
+++ b/arch/arm/kernel/smp_twd.c
@@ -137,8 +137,8 @@ void __cpuinit twd_timer_setup(struct clock_event_device *clk)
         clk->max_delta_ns = clockevent_delta2ns(0xffffffff, clk);
         clk->min_delta_ns = clockevent_delta2ns(0xf, clk);
 
+        clockevents_register_device(clk);
+
         /* Make sure our local interrupt controller has this enabled */
         gic_enable_ppi(clk->irq);
-
-        clockevents_register_device(clk);
 }
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index bf977f8514f6..4e66f62b8d41 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -23,8 +23,10 @@
 
 #if defined(CONFIG_SMP_ON_UP) && !defined(CONFIG_DEBUG_SPINLOCK)
 #define ARM_EXIT_KEEP(x)        x
+#define ARM_EXIT_DISCARD(x)
 #else
 #define ARM_EXIT_KEEP(x)
+#define ARM_EXIT_DISCARD(x)     x
 #endif
 
 OUTPUT_ARCH(arm)
@@ -39,6 +41,11 @@ jiffies = jiffies_64 + 4;
 SECTIONS
 {
         /*
+         * XXX: The linker does not define how output sections are
+         * assigned to input sections when there are multiple statements
+         * matching the same input section name.  There is no documented
+         * order of matching.
+         *
          * unwind exit sections must be discarded before the rest of the
          * unwind sections get included.
          */
@@ -47,6 +54,9 @@ SECTIONS
                 *(.ARM.extab.exit.text)
                 ARM_CPU_DISCARD(*(.ARM.exidx.cpuexit.text))
                 ARM_CPU_DISCARD(*(.ARM.extab.cpuexit.text))
+                ARM_EXIT_DISCARD(EXIT_TEXT)
+                ARM_EXIT_DISCARD(EXIT_DATA)
+                EXIT_CALL
 #ifndef CONFIG_HOTPLUG
                 *(.ARM.exidx.devexit.text)
                 *(.ARM.extab.devexit.text)
@@ -58,6 +68,8 @@ SECTIONS
 #ifndef CONFIG_SMP_ON_UP
                 *(.alt.smp.init)
 #endif
+                *(.discard)
+                *(.discard.*)
         }
 
 #ifdef CONFIG_XIP_KERNEL
@@ -279,9 +291,6 @@ SECTIONS
 
         STABS_DEBUG
         .comment 0 : { *(.comment) }
-
-        /* Default discards */
-        DISCARDS
 }
 
 /*