Merge remote branch 'rmk/for-linus' into for-linus

* rmk/for-linus: (1557 commits)
  ARM: 6806/1: irq: introduce entry and exit functions for chained handlers
  ARM: 6781/1: Thumb-2: Work around buggy Thumb-2 short branch relocations in gas
  ARM: 6747/1: P2V: Thumb2 support
  ARM: 6798/1: aout-core: zero thread debug registers in a.out core dump
  ARM: 6796/1: Footbridge: Fix I/O mappings for NOMMU mode
  ARM: 6784/1: errata: no automatic Store Buffer drain on Cortex-A9
  ARM: 6772/1: errata: possible fault MMU translations following an ASID switch
  ARM: 6776/1: mach-ux500: activate fix for errata 753970
  ARM: 6794/1: SPEAr: Append UL to device address macros.
  ARM: 6793/1: SPEAr: Remove unused *_SIZE macros from spear*.h files
  ARM: 6792/1: SPEAr: Replace SIZE macro's with SZ_4K macros
  ARM: 6791/1: SPEAr3xx: Declare device structures after shirq code
  ARM: 6790/1: SPEAr: Clock Framework: Rename usbd clock and align apb_clk entry
  ARM: 6789/1: SPEAr3xx: Rename sdio to sdhci
  ARM: 6788/1: SPEAr: Include mach/hardware.h instead of mach/spear.h
  ARM: 6787/1: SPEAr: Reorder #includes in .h & .c files.
  ARM: 6681/1: SPEAr: add debugfs support to clk API
  ARM: 6703/1: SPEAr: update clk API support
  ARM: 6679/1: SPEAr: make clk API functions more generic
  ARM: 6737/1: SPEAr: formalized timer support
  ...

Conflicts:
	arch/arm/mach-msm/board-msm7x27.c
	arch/arm/mach-msm/board-msm7x30.c
	arch/arm/mach-msm/board-qsd8x50.c
	arch/arm/mach-msm/board-sapphire.c
	arch/arm/mach-msm/include/mach/memory.h

1 files changed, 17 insertions, 2 deletions

diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c
index c556ed9db13d..81f13958e751 100644
--- a/drivers/tty/sysrq.c
+++ b/drivers/tty/sysrq.c
@@ -46,7 +46,7 @@
 #include <asm/irq_regs.h>
 
 /* Whether we react on sysrq keys or just ignore them */
-static int __read_mostly sysrq_enabled = 1;
+static int __read_mostly sysrq_enabled = SYSRQ_DEFAULT_ENABLE;
 static bool __read_mostly sysrq_always_enabled;
 
 static bool sysrq_on(void)
@@ -571,6 +571,7 @@ struct sysrq_state {
         unsigned int alt_use;
         bool active;
         bool need_reinject;
+        bool reinjecting;
 };
 
 static void sysrq_reinject_alt_sysrq(struct work_struct *work)
@@ -581,6 +582,10 @@ static void sysrq_reinject_alt_sysrq(struct work_struct *work)
         unsigned int alt_code = sysrq->alt_use;
 
         if (sysrq->need_reinject) {
+                /* we do not want the assignment to be reordered */
+                sysrq->reinjecting = true;
+                mb();
+
                 /* Simulate press and release of Alt + SysRq */
                 input_inject_event(handle, EV_KEY, alt_code, 1);
                 input_inject_event(handle, EV_KEY, KEY_SYSRQ, 1);
@@ -589,6 +594,9 @@ static void sysrq_reinject_alt_sysrq(struct work_struct *work)
                 input_inject_event(handle, EV_KEY, KEY_SYSRQ, 0);
                 input_inject_event(handle, EV_KEY, alt_code, 0);
                 input_inject_event(handle, EV_SYN, SYN_REPORT, 1);
+
+                mb();
+                sysrq->reinjecting = false;
         }
 }
 
@@ -599,6 +607,13 @@ static bool sysrq_filter(struct input_handle *handle,
         bool was_active = sysrq->active;
         bool suppress;
 
+        /*
+         * Do not filter anything if we are in the process of re-injecting
+         * Alt+SysRq combination.
+         */
+        if (sysrq->reinjecting)
+                return false;
+
         switch (type) {
 
         case EV_SYN:
@@ -629,7 +644,7 @@ static bool sysrq_filter(struct input_handle *handle,
                                 sysrq->alt_use = sysrq->alt;
                                 /*
                                  * If nothing else will be pressed we'll need
-                                 * to * re-inject Alt-SysRq keysroke.
+                                 * to re-inject Alt-SysRq keysroke.
                                  */
                                 sysrq->need_reinject = true;
                         }