clockevents: Remove extra local_irq_save() in clockevents_exchange_device()

Called with 'clockevents_lock' held and interrupts disabled
already.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/51005827.yXt5tjZMBs@vostro.rjw.lan
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/kernel/time/clockevents.c b/kernel/time/clockevents.c
index 3531beecbe95e585af192f48eb90a9e25c4ca3ed..b730027185369ac5490294272fef2c14f6685e92 100644 (file)
--- a/kernel/time/clockevents.c
+++ b/kernel/time/clockevents.c
@@ -595,14 +595,12 @@ void clockevents_handle_noop(struct clock_event_device *dev)
  * @old:       device to release (can be NULL)
  * @new:       device to request (can be NULL)
  *
- * Called from the notifier chain. clockevents_lock is held already
+ * Called from various tick functions with clockevents_lock held and
+ * interrupts disabled.
  */
 void clockevents_exchange_device(struct clock_event_device *old,
                                 struct clock_event_device *new)
 {
-       unsigned long flags;
-
-       local_irq_save(flags);
        /*
         * Caller releases a clock event device. We queue it into the
         * released list and do a notify add later.
@@ -618,7 +616,6 @@ void clockevents_exchange_device(struct clock_event_device *old,
                BUG_ON(new->state != CLOCK_EVT_STATE_DETACHED);
                clockevents_shutdown(new);
        }
-       local_irq_restore(flags);
 }
 
 /**