Merge master.kernel.org:/home/rmk/linux-2.6-arm

* master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] Fix alignment fault handling for ARMv6 and later CPUs
  [ARM] 5340/1: fix stack placement after noexecstack changes
  [ARM] 5339/1: fix __fls() on ARM
  [ARM] Orion: fix bug in pcie configuration cycle function field mask
  [ARM] omap: fix a pile of issues

8 files changed, 43 insertions, 19 deletions

diff --git a/arch/arm/include/asm/bitops.h b/arch/arm/include/asm/bitops.h
index 9a1db20e032a..63a481fbbed4 100644
--- a/arch/arm/include/asm/bitops.h
+++ b/arch/arm/include/asm/bitops.h
@@ -237,6 +237,7 @@ extern int _find_next_bit_be(const unsigned long *p, int size, int offset);
 #if __LINUX_ARM_ARCH__ < 5
 
 #include <asm-generic/bitops/ffz.h>
+#include <asm-generic/bitops/__fls.h>
 #include <asm-generic/bitops/__ffs.h>
 #include <asm-generic/bitops/fls.h>
 #include <asm-generic/bitops/ffs.h>
@@ -277,16 +278,19 @@ static inline int constant_fls(int x)
  * the clz instruction for much better code efficiency.
  */
 
-#define __fls(x) \
-        ( __builtin_constant_p(x) ? constant_fls(x) : \
-          ({ int __r; asm("clz\t%0, %1" : "=r"(__r) : "r"(x) : "cc"); 32-__r; }) )
-
-/* Implement fls() in C so that 64-bit args are suitably truncated */
 static inline int fls(int x)
 {
-        return __fls(x);
+        int ret;
+
+        if (__builtin_constant_p(x))
+               return constant_fls(x);
+
+        asm("clz\t%0, %1" : "=r" (ret) : "r" (x) : "cc");
+        ret = 32 - ret;
+        return ret;
 }
 
+#define __fls(x) (fls(x) - 1)
 #define ffs(x) ({ unsigned long __t = (x); fls(__t & -__t); })
 #define __ffs(x) (ffs(x) - 1)
 #define ffz(x) __ffs( ~(x) )
diff --git a/arch/arm/include/asm/processor.h b/arch/arm/include/asm/processor.h
index 517a4d6ffc74..6ff33790f47b 100644
--- a/arch/arm/include/asm/processor.h
+++ b/arch/arm/include/asm/processor.h
@@ -23,7 +23,7 @@
 #include <asm/types.h>
 
 #ifdef __KERNEL__
-#define STACK_TOP       ((current->personality == PER_LINUX_32BIT) ? \
+#define STACK_TOP       ((current->personality & ADDR_LIMIT_32BIT) ? \
                          TASK_SIZE : TASK_SIZE_26)
 #define STACK_TOP_MAX   TASK_SIZE
 #endif
diff --git a/arch/arm/mach-omap1/io.c b/arch/arm/mach-omap1/io.c
index b3bd8ca85118..4c3e582f3d3c 100644
--- a/arch/arm/mach-omap1/io.c
+++ b/arch/arm/mach-omap1/io.c
@@ -128,7 +128,7 @@ void __init omap1_map_common_io(void)
  * Common low-level hardware init for omap1. This should only get called from
  * board specific init.
  */
-void __init omap1_init_common_hw()
+void __init omap1_init_common_hw(void)
 {
         /* REVISIT: Refer to OMAP5910 Errata, Advisory SYS_1: "Timeout Abort
          * on a Posted Write in the TIPB Bridge".
diff --git a/arch/arm/mm/alignment.c b/arch/arm/mm/alignment.c
index 133e65d166b3..2d5884ce0435 100644
--- a/arch/arm/mm/alignment.c
+++ b/arch/arm/mm/alignment.c
@@ -70,6 +70,10 @@ static unsigned long ai_dword;
 static unsigned long ai_multi;
 static int ai_usermode;
 
+#define UM_WARN         (1 << 0)
+#define UM_FIXUP        (1 << 1)
+#define UM_SIGNAL       (1 << 2)
+
 #ifdef CONFIG_PROC_FS
 static const char *usermode_action[] = {
         "ignored",
@@ -754,7 +758,7 @@ do_alignment(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
  user:
         ai_user += 1;
 
-        if (ai_usermode & 1)
+        if (ai_usermode & UM_WARN)
                 printk("Alignment trap: %s (%d) PC=0x%08lx Instr=0x%0*lx "
                        "Address=0x%08lx FSR 0x%03x\n", current->comm,
                         task_pid_nr(current), instrptr,
@@ -762,10 +766,10 @@ do_alignment(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
                         thumb_mode(regs) ? tinstr : instr,
                         addr, fsr);
 
-        if (ai_usermode & 2)
+        if (ai_usermode & UM_FIXUP)
                 goto fixup;
 
-        if (ai_usermode & 4)
+        if (ai_usermode & UM_SIGNAL)
                 force_sig(SIGBUS, current);
         else
                 set_cr(cr_no_alignment);
@@ -796,6 +800,22 @@ static int __init alignment_init(void)
         res->write_proc = proc_alignment_write;
 #endif
 
+        /*
+         * ARMv6 and later CPUs can perform unaligned accesses for
+         * most single load and store instructions up to word size.
+         * LDM, STM, LDRD and STRD still need to be handled.
+         *
+         * Ignoring the alignment fault is not an option on these
+         * CPUs since we spin re-faulting the instruction without
+         * making any progress.
+         */
+        if (cpu_architecture() >= CPU_ARCH_ARMv6 && (cr_alignment & CR_U)) {
+                cr_alignment &= ~CR_A;
+                cr_no_alignment &= ~CR_A;
+                set_cr(cr_alignment);
+                ai_usermode = UM_FIXUP;
+        }
+
         hook_fault_code(1, do_alignment, SIGILL, "alignment exception");
         hook_fault_code(3, do_alignment, SIGILL, "alignment exception");
 
diff --git a/arch/arm/plat-omap/include/mach/omapfb.h b/arch/arm/plat-omap/include/mach/omapfb.h
index ec67fb428607..7b74d1255e0b 100644
--- a/arch/arm/plat-omap/include/mach/omapfb.h
+++ b/arch/arm/plat-omap/include/mach/omapfb.h
@@ -353,8 +353,8 @@ struct omapfb_device {
         u32                     pseudo_palette[17];
 
         struct lcd_panel        *panel;                 /* LCD panel */
-        struct lcd_ctrl         *ctrl;                  /* LCD controller */
-        struct lcd_ctrl         *int_ctrl;              /* internal LCD ctrl */
+        const struct lcd_ctrl   *ctrl;                  /* LCD controller */
+        const struct lcd_ctrl   *int_ctrl;              /* internal LCD ctrl */
         struct lcd_ctrl_extif   *ext_if;                /* LCD ctrl external
                                                            interface */
         struct device           *dev;
diff --git a/arch/arm/plat-omap/sram.c b/arch/arm/plat-omap/sram.c
index 9f9a921829c0..dcd9d16da2e9 100644
--- a/arch/arm/plat-omap/sram.c
+++ b/arch/arm/plat-omap/sram.c
@@ -255,7 +255,7 @@ void omap_sram_reprogram_clock(u32 dpllctl, u32 ckctl)
         if (!_omap_sram_reprogram_clock)
                 omap_sram_error();
 
-        return _omap_sram_reprogram_clock(dpllctl, ckctl);
+        _omap_sram_reprogram_clock(dpllctl, ckctl);
 }
 
 int __init omap1_sram_init(void)
@@ -282,8 +282,8 @@ void omap2_sram_ddr_init(u32 *slow_dll_ctrl, u32 fast_dll_ctrl,
         if (!_omap2_sram_ddr_init)
                 omap_sram_error();
 
-        return _omap2_sram_ddr_init(slow_dll_ctrl, fast_dll_ctrl,
-                                    base_cs, force_unlock);
+        _omap2_sram_ddr_init(slow_dll_ctrl, fast_dll_ctrl,
+                             base_cs, force_unlock);
 }
 
 static void (*_omap2_sram_reprogram_sdrc)(u32 perf_level, u32 dll_val,
@@ -294,7 +294,7 @@ void omap2_sram_reprogram_sdrc(u32 perf_level, u32 dll_val, u32 mem_type)
         if (!_omap2_sram_reprogram_sdrc)
                 omap_sram_error();
 
-        return _omap2_sram_reprogram_sdrc(perf_level, dll_val, mem_type);
+        _omap2_sram_reprogram_sdrc(perf_level, dll_val, mem_type);
 }
 
 static u32 (*_omap2_set_prcm)(u32 dpll_ctrl_val, u32 sdrc_rfr_val, int bypass);
diff --git a/arch/arm/plat-orion/pcie.c b/arch/arm/plat-orion/pcie.c
index 883902fead89..d41d41d78ad9 100644
--- a/arch/arm/plat-orion/pcie.c
+++ b/arch/arm/plat-orion/pcie.c
@@ -35,7 +35,7 @@
 #define  PCIE_CONF_REG(r)               ((((r) & 0xf00) << 16) | ((r) & 0xfc))
 #define  PCIE_CONF_BUS(b)               (((b) & 0xff) << 16)
 #define  PCIE_CONF_DEV(d)               (((d) & 0x1f) << 11)
-#define  PCIE_CONF_FUNC(f)              (((f) & 0x3) << 8)
+#define  PCIE_CONF_FUNC(f)              (((f) & 0x7) << 8)
 #define PCIE_CONF_DATA_OFF      0x18fc
 #define PCIE_MASK_OFF           0x1910
 #define PCIE_CTRL_OFF           0x1a00
diff --git a/drivers/video/omap/omapfb_main.c b/drivers/video/omap/omapfb_main.c
index 5a5e407dc45f..1a49519dafa4 100644
--- a/drivers/video/omap/omapfb_main.c
+++ b/drivers/video/omap/omapfb_main.c
@@ -392,7 +392,7 @@ static void set_fb_fix(struct fb_info *fbi)
         int bpp;
 
         rg = &plane->fbdev->mem_desc.region[plane->idx];
-        fbi->screen_base        = (char __iomem *)rg->vaddr;
+        fbi->screen_base        = rg->vaddr;
         fix->smem_start         = rg->paddr;
         fix->smem_len           = rg->size;