diff options
Diffstat (limited to 'sound/core/timer.c')
| -rw-r--r-- | sound/core/timer.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sound/core/timer.c b/sound/core/timer.c index 7c1cbf0a0dc4..8e7561dfc5fc 100644 --- a/sound/core/timer.c +++ b/sound/core/timer.c @@ -24,7 +24,7 @@ #include <linux/slab.h> #include <linux/time.h> #include <linux/mutex.h> -#include <linux/moduleparam.h> +#include <linux/module.h> #include <linux/string.h> #include <sound/core.h> #include <sound/timer.h> @@ -328,6 +328,8 @@ int snd_timer_close(struct snd_timer_instance *timeri) mutex_unlock(®ister_mutex); } else { timer = timeri->timer; + if (snd_BUG_ON(!timer)) + goto out; /* wait, until the active callback is finished */ spin_lock_irq(&timer->lock); while (timeri->flags & SNDRV_TIMER_IFLG_CALLBACK) { @@ -353,6 +355,7 @@ int snd_timer_close(struct snd_timer_instance *timeri) } mutex_unlock(®ister_mutex); } + out: if (timeri->private_free) timeri->private_free(timeri); kfree(timeri->owner); @@ -531,6 +534,8 @@ int snd_timer_stop(struct snd_timer_instance *timeri) if (err < 0) return err; timer = timeri->timer; + if (!timer) + return -EINVAL; spin_lock_irqsave(&timer->lock, flags); timeri->cticks = timeri->ticks; timeri->pticks = 0; |