Merge remote-tracking branch 'linus/master' into staging/for_v3.8

* linus/master: (1428 commits)
  futex: avoid wake_futex() for a PI futex_q
  watchdog: using u64 in get_sample_period()
  writeback: put unused inodes to LRU after writeback completion
  mm: vmscan: check for fatal signals iff the process was throttled
  Revert "mm: remove __GFP_NO_KSWAPD"
  proc: check vma->vm_file before dereferencing
  UAPI: strip the _UAPI prefix from header guards during header installation
  include/linux/bug.h: fix sparse warning related to BUILD_BUG_ON_INVALID
  Linux 3.7-rc7
  powerpc/eeh: Do not invalidate PE properly
  ALSA: hda - Fix build without CONFIG_PM
  of/address: sparc: Declare of_iomap as an extern function for sparc again
  PM / QoS: fix wrong error-checking condition
  bnx2x: remove redundant warning log
  vxlan: fix command usage in its doc
  8139cp: revert "set ring address before enabling receiver"
  MPI: Fix compilation on MIPS with GCC 4.4 and newer
  MIPS: Fix crash that occurs when function tracing is enabled
  MIPS: Merge overlapping bootmem ranges
  jbd: Fix lock ordering bug in journal_unmap_buffer()
  ...

1 files changed, 0 insertions, 21 deletions

diff --git a/drivers/leds/ledtrig-cpu.c b/drivers/leds/ledtrig-cpu.c
index b312056da14d..4239b3955ff0 100644
--- a/drivers/leds/ledtrig-cpu.c
+++ b/drivers/leds/ledtrig-cpu.c
@@ -33,8 +33,6 @@
 struct led_trigger_cpu {
 	char name[MAX_NAME_LEN];
 	struct led_trigger *_trig;
-	struct mutex lock;
-	int lock_is_inited;
 };
 
 static DEFINE_PER_CPU(struct led_trigger_cpu, cpu_trig);
@@ -50,12 +48,6 @@ void ledtrig_cpu(enum cpu_led_event ledevt)
 {
 	struct led_trigger_cpu *trig = &__get_cpu_var(cpu_trig);
 
-	/* mutex lock should be initialized before calling mutex_call() */
-	if (!trig->lock_is_inited)
-		return;
-
-	mutex_lock(&trig->lock);
-
 	/* Locate the correct CPU LED */
 	switch (ledevt) {
 	case CPU_LED_IDLE_END:
@@ -75,8 +67,6 @@ void ledtrig_cpu(enum cpu_led_event ledevt)
 		/* Will leave the LED as it is */
 		break;
 	}
-
-	mutex_unlock(&trig->lock);
 }
 EXPORT_SYMBOL(ledtrig_cpu);
 
@@ -117,14 +107,9 @@ static int __init ledtrig_cpu_init(void)
 	for_each_possible_cpu(cpu) {
 		struct led_trigger_cpu *trig = &per_cpu(cpu_trig, cpu);
 
-		mutex_init(&trig->lock);
-
 		snprintf(trig->name, MAX_NAME_LEN, "cpu%d", cpu);
 
-		mutex_lock(&trig->lock);
 		led_trigger_register_simple(trig->name, &trig->_trig);
-		trig->lock_is_inited = 1;
-		mutex_unlock(&trig->lock);
 	}
 
 	register_syscore_ops(&ledtrig_cpu_syscore_ops);
@@ -142,15 +127,9 @@ static void __exit ledtrig_cpu_exit(void)
 	for_each_possible_cpu(cpu) {
 		struct led_trigger_cpu *trig = &per_cpu(cpu_trig, cpu);
 
-		mutex_lock(&trig->lock);
-
 		led_trigger_unregister_simple(trig->_trig);
 		trig->_trig = NULL;
 		memset(trig->name, 0, MAX_NAME_LEN);
-		trig->lock_is_inited = 0;
-
-		mutex_unlock(&trig->lock);
-		mutex_destroy(&trig->lock);
 	}
 
 	unregister_syscore_ops(&ledtrig_cpu_syscore_ops);