diff options
| -rw-r--r-- | arch/arm/kernel/time.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c index 1b7fcd50c3e2..8880482dcbff 100644 --- a/arch/arm/kernel/time.c +++ b/arch/arm/kernel/time.c | |||
| @@ -433,10 +433,12 @@ void timer_dyn_reprogram(void) | |||
| 433 | { | 433 | { |
| 434 | struct dyn_tick_timer *dyn_tick = system_timer->dyn_tick; | 434 | struct dyn_tick_timer *dyn_tick = system_timer->dyn_tick; |
| 435 | 435 | ||
| 436 | write_seqlock(&xtime_lock); | 436 | if (dyn_tick) { |
| 437 | if (dyn_tick->state & DYN_TICK_ENABLED) | 437 | write_seqlock(&xtime_lock); |
| 438 | dyn_tick->reprogram(next_timer_interrupt() - jiffies); | 438 | if (dyn_tick->state & DYN_TICK_ENABLED) |
| 439 | write_sequnlock(&xtime_lock); | 439 | dyn_tick->reprogram(next_timer_interrupt() - jiffies); |
| 440 | write_sequnlock(&xtime_lock); | ||
| 441 | } | ||
| 440 | } | 442 | } |
| 441 | 443 | ||
| 442 | static ssize_t timer_show_dyn_tick(struct sys_device *dev, char *buf) | 444 | static ssize_t timer_show_dyn_tick(struct sys_device *dev, char *buf) |