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

diff --git a/arch/arm/include/asm/bitops.h b/arch/arm/include/asm/bitops.h
index 9a1db20e032a07eb744aba50c1c60a28d0a0b381..63a481fbbed43ed12ecc9802ffc729a06e8d23c6 100644 (file)
--- 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 517a4d6ffc74b791691a3a2f65099bb6352e5e64..6ff33790f47b16d91054c4907edb09616a21f5d8 100644 (file)
--- 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 b3bd8ca85118babd632c353c20cfec92fa811108..4c3e582f3d3cc37e7d4db3338d62828f84e10d93 100644 (file)
--- 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 133e65d166b315b0e54aba959846a162643bc927..2d5884ce0435fb436a57bee6d314284b9101e87e 100644 (file)
--- 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 ec67fb428607c55ba7d4e452db241cd048e7028c..7b74d1255e0b93c7531e607a77188a148bda980b 100644 (file)
--- 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 9f9a921829c00686f5b8a658c89bef8e084558d0..dcd9d16da2e9f5f0df6e36484e09edaed84139e9 100644 (file)
--- 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 883902fead8928f9ff24cdfd781fa28b3013470c..d41d41d78ad98676dea41aeb6466fb1ebf2bb811 100644 (file)
--- 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 5a5e407dc45f713cc9252f11efcf1ae2b113f2a3..1a49519dafa483b864c992dfb1f92b2f8e02505f 100644 (file)
--- 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;