Merge branch 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm

* 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm:
  ARM: fix missing branch in __error_a
  ARM: fix /proc/$PID/stack on SMP
  ARM: Fix build regression on SA11x0, PXA, and H720x targets
  ARM: 6625/1: use memblock memory regions for "System RAM" I/O resources
  ARM: fix wrongly patched constants
  ARM: 6624/1: fix dependency for CONFIG_SMP_ON_UP
  ARM: 6623/1: Thumb-2: Fix out-of-range offset for Thumb-2 in proc-v7.S
  ARM: 6622/1: fix dma_unmap_sg() documentation
  ARM: 6621/1: bitops: remove condition code clobber for CLZ
  ARM: 6620/1: Change misleading warning when CONFIG_CMDLINE_FORCE is used
  ARM: 6619/1: nommu: avoid mapping vectors page when !CONFIG_MMU
  ARM: sched_clock: make minsec argument to clocks_calc_mult_shift() zero
  ARM: sched_clock: allow init_sched_clock() to be called early
  ARM: integrator: fix compile warning in cpu.c
  ARM: 6616/1: Fix ep93xx-fb init/exit annotations
  ARM: twd: fix display of twd frequency
  ARM: udelay: prevent math rounding resulting in short udelays

7 files changed, 32 insertions, 18 deletions

diff --git a/arch/arm/kernel/head-common.S b/arch/arm/kernel/head-common.S
index bbecaac1e01..8f57515bbdb 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 e76fcaadce0..94bbedbed63 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 2cdcc9287c7..9a46370fe9d 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 3455ad33de4..420b8d6485d 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 dd790745b3e..fd9156698ab 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 c2e112e1a05..381d23a497c 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 f1e2eb19a67..3d76bf23373 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
 }