20 files changed, 49 insertions, 31 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index e2f801167593..629ff8261fc1 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1281,7 +1281,7 @@ config SMP
 config SMP_ON_UP
         bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
         depends on EXPERIMENTAL
-        depends on SMP && !XIP
+        depends on SMP && !XIP_KERNEL
         default y
         help
           SMP kernels contain instructions which fail on non-SMP processors.
diff --git a/arch/arm/include/asm/bitops.h b/arch/arm/include/asm/bitops.h
index 338ff19ae447..7b1bb2bbaf88 100644
--- a/arch/arm/include/asm/bitops.h
+++ b/arch/arm/include/asm/bitops.h
@@ -285,7 +285,7 @@ static inline int fls(int x)
         if (__builtin_constant_p(x))
                return constant_fls(x);
 
-        asm("clz\t%0, %1" : "=r" (ret) : "r" (x) : "cc");
+        asm("clz\t%0, %1" : "=r" (ret) : "r" (x));
         ret = 32 - ret;
         return ret;
 }
diff --git a/arch/arm/include/asm/sched_clock.h b/arch/arm/include/asm/sched_clock.h
index a84628be1a7b..c8e6ddf3e860 100644
--- a/arch/arm/include/asm/sched_clock.h
+++ b/arch/arm/include/asm/sched_clock.h
@@ -115,4 +115,6 @@ static inline void init_fixed_sched_clock(struct clock_data *cd,
         }
 }
 
+extern void sched_clock_postinit(void);
+
 #endif
diff --git a/arch/arm/kernel/head-common.S b/arch/arm/kernel/head-common.S
index bbecaac1e013..8f57515bbdb0 100644
--- a/arch/arm/kernel/head-common.S
+++ b/arch/arm/kernel/head-common.S
@@ -60,6 +60,8 @@ str_a1:	.asciz	"\nError: unrecognized/unsupported machine ID (r1 = 0x"
 str_a2: .asciz  ").\n\nAvailable machine support:\n\nID (hex)\tNAME\n"
 str_a3: .asciz  "\nPlease check your kernel config and/or bootloader.\n"
         .align
+#else
+        b       __error
 #endif
 
 /*
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index e76fcaadce03..94bbedbed639 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -483,6 +483,7 @@ unsigned long arch_randomize_brk(struct mm_struct *mm)
         return randomize_range(mm->brk, range_end, 0) ? : mm->brk;
 }
 
+#ifdef CONFIG_MMU
 /*
  * The vectors page is always readable from user space for the
  * atomic helpers and the signal restart code.  Let's declare a mapping
@@ -503,3 +504,4 @@ const char *arch_vma_name(struct vm_area_struct *vma)
 {
         return (vma->vm_start == 0xffff0000) ? "[vectors]" : NULL;
 }
+#endif
diff --git a/arch/arm/kernel/sched_clock.c b/arch/arm/kernel/sched_clock.c
index 2cdcc9287c74..9a46370fe9da 100644
--- a/arch/arm/kernel/sched_clock.c
+++ b/arch/arm/kernel/sched_clock.c
@@ -34,7 +34,7 @@ void __init init_sched_clock(struct clock_data *cd, void (*update)(void),
         sched_clock_update_fn = update;
 
         /* calculate the mult/shift to convert counter ticks to ns. */
-        clocks_calc_mult_shift(&cd->mult, &cd->shift, rate, NSEC_PER_SEC, 60);
+        clocks_calc_mult_shift(&cd->mult, &cd->shift, rate, NSEC_PER_SEC, 0);
 
         r = rate;
         if (r >= 4000000) {
@@ -60,10 +60,15 @@ void __init init_sched_clock(struct clock_data *cd, void (*update)(void),
          * sets the initial epoch.
          */
         sched_clock_timer.data = msecs_to_jiffies(w - (w / 10));
-        sched_clock_poll(sched_clock_timer.data);
+        update();
 
         /*
          * Ensure that sched_clock() starts off at 0ns
          */
         cd->epoch_ns = 0;
 }
+
+void __init sched_clock_postinit(void)
+{
+        sched_clock_poll(sched_clock_timer.data);
+}
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 3455ad33de4c..420b8d6485d6 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -518,25 +518,21 @@ setup_ramdisk(int doload, int prompt, int image_start, unsigned int rd_sz)
 #endif
 }
 
-static void __init
-request_standard_resources(struct meminfo *mi, struct machine_desc *mdesc)
+static void __init request_standard_resources(struct machine_desc *mdesc)
 {
+        struct memblock_region *region;
         struct resource *res;
-        int i;
 
         kernel_code.start   = virt_to_phys(_text);
         kernel_code.end     = virt_to_phys(_etext - 1);
         kernel_data.start   = virt_to_phys(_sdata);
         kernel_data.end     = virt_to_phys(_end - 1);
 
-        for (i = 0; i < mi->nr_banks; i++) {
-                if (mi->bank[i].size == 0)
-                        continue;
-
+        for_each_memblock(memory, region) {
                 res = alloc_bootmem_low(sizeof(*res));
                 res->name  = "System RAM";
-                res->start = mi->bank[i].start;
-                res->end   = mi->bank[i].start + mi->bank[i].size - 1;
+                res->start = __pfn_to_phys(memblock_region_memory_base_pfn(region));
+                res->end = __pfn_to_phys(memblock_region_memory_end_pfn(region)) - 1;
                 res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
 
                 request_resource(&iomem_resource, res);
@@ -650,15 +646,17 @@ static int __init parse_tag_revision(const struct tag *tag)
 
 __tagtable(ATAG_REVISION, parse_tag_revision);
 
-#ifndef CONFIG_CMDLINE_FORCE
 static int __init parse_tag_cmdline(const struct tag *tag)
 {
+#ifndef CONFIG_CMDLINE_FORCE
         strlcpy(default_command_line, tag->u.cmdline.cmdline, COMMAND_LINE_SIZE);
+#else
+        pr_warning("Ignoring tag cmdline (using the default kernel command line)\n");
+#endif /* CONFIG_CMDLINE_FORCE */
         return 0;
 }
 
 __tagtable(ATAG_CMDLINE, parse_tag_cmdline);
-#endif /* CONFIG_CMDLINE_FORCE */
 
 /*
  * Scan the tag table for this tag, and call its parse function.
@@ -857,7 +855,7 @@ void __init setup_arch(char **cmdline_p)
         arm_memblock_init(&meminfo, mdesc);
 
         paging_init(mdesc);
-        request_standard_resources(&meminfo, mdesc);
+        request_standard_resources(mdesc);
 
 #ifdef CONFIG_SMP
         if (is_smp())
diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c
index dd790745b3ef..fd9156698ab9 100644
--- a/arch/arm/kernel/smp_twd.c
+++ b/arch/arm/kernel/smp_twd.c
@@ -114,7 +114,7 @@ static void __cpuinit twd_calibrate_rate(void)
                 twd_timer_rate = (0xFFFFFFFFU - count) * (HZ / 5);
 
                 printk("%lu.%02luMHz.\n", twd_timer_rate / 1000000,
-                        (twd_timer_rate / 100000) % 100);
+                        (twd_timer_rate / 1000000) % 100);
         }
 
         load = twd_timer_rate / HZ;
diff --git a/arch/arm/kernel/stacktrace.c b/arch/arm/kernel/stacktrace.c
index c2e112e1a05f..381d23a497c1 100644
--- a/arch/arm/kernel/stacktrace.c
+++ b/arch/arm/kernel/stacktrace.c
@@ -94,10 +94,13 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
         if (tsk != current) {
 #ifdef CONFIG_SMP
                 /*
-                 * What guarantees do we have here that 'tsk'
-                 * is not running on another CPU?
+                 * What guarantees do we have here that 'tsk' is not
+                 * running on another CPU?  For now, ignore it as we
+                 * can't guarantee we won't explode.
                  */
-                BUG();
+                if (trace->nr_entries < trace->max_entries)
+                        trace->entries[trace->nr_entries++] = ULONG_MAX;
+                return;
 #else
                 data.no_sched_functions = 1;
                 frame.fp = thread_saved_fp(tsk);
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index f1e2eb19a67d..3d76bf233734 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -29,6 +29,7 @@
 
 #include <asm/leds.h>
 #include <asm/thread_info.h>
+#include <asm/sched_clock.h>
 #include <asm/stacktrace.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/time.h>
@@ -163,5 +164,8 @@ void __init time_init(void)
 {
         system_timer = machine_desc->timer;
         system_timer->init();
+#ifdef CONFIG_HAVE_SCHED_CLOCK
+        sched_clock_postinit();
+#endif
 }
 
diff --git a/arch/arm/lib/delay.S b/arch/arm/lib/delay.S
index 8d6a8762ab88..3c9a05c8d20b 100644
--- a/arch/arm/lib/delay.S
+++ b/arch/arm/lib/delay.S
@@ -25,11 +25,15 @@ ENTRY(__udelay)
                 ldr     r2, .LC1
                 mul     r0, r2, r0
 ENTRY(__const_udelay)                           @ 0 <= r0 <= 0x7fffff06
+                mov     r1, #-1
                 ldr     r2, .LC0
                 ldr     r2, [r2]                @ max = 0x01ffffff
+                add     r0, r0, r1, lsr #32-14
                 mov     r0, r0, lsr #14         @ max = 0x0001ffff
+                add     r2, r2, r1, lsr #32-10
                 mov     r2, r2, lsr #10         @ max = 0x00007fff
                 mul     r0, r2, r0              @ max = 2^32-1
+                add     r0, r0, r1, lsr #32-6
                 movs    r0, r0, lsr #6
                 moveq   pc, lr
 
diff --git a/arch/arm/mach-h720x/h7201-eval.c b/arch/arm/mach-h720x/h7201-eval.c
index 79f0b896e446..629454d71c8d 100644
--- a/arch/arm/mach-h720x/h7201-eval.c
+++ b/arch/arm/mach-h720x/h7201-eval.c
@@ -23,7 +23,6 @@
 #include <asm/types.h>
 #include <asm/mach-types.h>
 #include <asm/page.h>
-#include <asm/pgtable.h>
 #include <asm/mach/arch.h>
 #include <mach/hardware.h>
 #include "common.h"
diff --git a/arch/arm/mach-h720x/h7202-eval.c b/arch/arm/mach-h720x/h7202-eval.c
index cc28b1efe047..e9f46b696354 100644
--- a/arch/arm/mach-h720x/h7202-eval.c
+++ b/arch/arm/mach-h720x/h7202-eval.c
@@ -23,7 +23,6 @@
 #include <asm/types.h>
 #include <asm/mach-types.h>
 #include <asm/page.h>
-#include <asm/pgtable.h>
 #include <asm/mach/arch.h>
 #include <mach/irqs.h>
 #include <mach/hardware.h>
diff --git a/arch/arm/mach-integrator/cpu.c b/arch/arm/mach-integrator/cpu.c
index a3fbcb3adc29..fbb457779895 100644
--- a/arch/arm/mach-integrator/cpu.c
+++ b/arch/arm/mach-integrator/cpu.c
@@ -173,7 +173,7 @@ static unsigned int integrator_get(unsigned int cpu)
 
         if (machine_is_integrator()) {
                 vco.s = (cm_osc >> 8) & 7;
-        } else if (machine_is_cintegrator()) {
+        } else {
                 vco.s = 1;
         }
         vco.v = cm_osc & 255;
diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c
index d6e15f71fc09..f5d91efc2965 100644
--- a/arch/arm/mach-pxa/generic.c
+++ b/arch/arm/mach-pxa/generic.c
@@ -22,7 +22,6 @@
 
 #include <mach/hardware.h>
 #include <asm/system.h>
-#include <asm/pgtable.h>
 #include <asm/mach/map.h>
 #include <asm/mach-types.h>
 
diff --git a/arch/arm/mach-s5pv310/hotplug.c b/arch/arm/mach-s5pv310/hotplug.c
index afa5392d9fc0..c24235c89eed 100644
--- a/arch/arm/mach-s5pv310/hotplug.c
+++ b/arch/arm/mach-s5pv310/hotplug.c
@@ -30,10 +30,10 @@ static inline void cpu_enter_lowpower(void)
          * Turn off coherency
          */
         "       mrc     p15, 0, %0, c1, c0, 1\n"
-        "       bic     %0, %0, %2\n"
+        "       bic     %0, %0, #0x20\n"
         "       mcr     p15, 0, %0, c1, c0, 1\n"
         "       mrc     p15, 0, %0, c1, c0, 0\n"
-        "       bic     %0, %0, #0x04\n"
+        "       bic     %0, %0, %2\n"
         "       mcr     p15, 0, %0, c1, c0, 0\n"
           : "=&r" (v)
           : "r" (0), "Ir" (CR_C)
diff --git a/arch/arm/mach-sa1100/generic.c b/arch/arm/mach-sa1100/generic.c
index 59d14f0fdcf8..e21f3470eece 100644
--- a/arch/arm/mach-sa1100/generic.c
+++ b/arch/arm/mach-sa1100/generic.c
@@ -21,7 +21,6 @@
 #include <asm/div64.h>
 #include <mach/hardware.h>
 #include <asm/system.h>
-#include <asm/pgtable.h>
 #include <asm/mach/map.h>
 #include <asm/mach/flash.h>
 #include <asm/irq.h>
diff --git a/arch/arm/mach-tegra/hotplug.c b/arch/arm/mach-tegra/hotplug.c
index a5cb1ce76ff2..f3294040d357 100644
--- a/arch/arm/mach-tegra/hotplug.c
+++ b/arch/arm/mach-tegra/hotplug.c
@@ -26,10 +26,10 @@ static inline void cpu_enter_lowpower(void)
          * Turn off coherency
          */
         "       mrc     p15, 0, %0, c1, c0, 1\n"
-        "       bic     %0, %0, %2\n"
+        "       bic     %0, %0, #0x20\n"
         "       mcr     p15, 0, %0, c1, c0, 1\n"
         "       mrc     p15, 0, %0, c1, c0, 0\n"
-        "       bic     %0, %0, #0x04\n"
+        "       bic     %0, %0, %2\n"
         "       mcr     p15, 0, %0, c1, c0, 0\n"
           : "=&r" (v)
           : "r" (0), "Ir" (CR_C)
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 6b48e0a3d7aa..4771dba61448 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -577,7 +577,7 @@ EXPORT_SYMBOL(dma_map_sg);
  * dma_unmap_sg - unmap a set of SG buffers mapped by dma_map_sg
  * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices
  * @sg: list of buffers
- * @nents: number of buffers to unmap (returned from dma_map_sg)
+ * @nents: number of buffers to unmap (same as was passed to dma_map_sg)
  * @dir: DMA transfer direction (same as was passed to dma_map_sg)
  *
  * Unmap a set of streaming mode DMA translations.  Again, CPU access
diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S
index b49fab21517c..0c1172b56b4e 100644
--- a/arch/arm/mm/proc-v7.S
+++ b/arch/arm/mm/proc-v7.S
@@ -159,7 +159,9 @@ ENTRY(cpu_v7_set_pte_ext)
         tstne   r1, #L_PTE_PRESENT
         moveq   r3, #0
 
-        str     r3, [r0, #2048]!
+ ARM(   str     r3, [r0, #2048]! )
+ THUMB( add     r0, r0, #2048 )
+ THUMB( str     r3, [r0] )
         mcr     p15, 0, r0, c7, c10, 1          @ flush_pte
 #endif
         mov     pc, lr