ALSA: aloop: Sync stale timer before release

[pandora-kernel.git] / sound / drivers / aloop.c

diff --git a/sound/drivers/aloop.c b/sound/drivers/aloop.c
index 7001236..3fa12d9 100644 (file)
--- a/sound/drivers/aloop.c
+++ b/sound/drivers/aloop.c
@@ -195,6 +195,11 @@ static inline void loopback_timer_stop(struct loopback_pcm *dpcm)
        spin_unlock(&dpcm->timer_lock);
 }
 
+static inline void loopback_timer_stop_sync(struct loopback_pcm *dpcm)
+{
+       del_timer_sync(&dpcm->timer);
+}
+
 #define CABLE_VALID_PLAYBACK   (1 << SNDRV_PCM_STREAM_PLAYBACK)
 #define CABLE_VALID_CAPTURE    (1 << SNDRV_PCM_STREAM_CAPTURE)
 #define CABLE_VALID_BOTH       (CABLE_VALID_PLAYBACK|CABLE_VALID_CAPTURE)
@@ -328,6 +333,8 @@ static int loopback_prepare(struct snd_pcm_substream *substream)
        struct loopback_cable *cable = dpcm->cable;
        int bps, salign;
 
+       loopback_timer_stop_sync(dpcm);
+
        salign = (snd_pcm_format_width(runtime->format) *
                                                runtime->channels) / 8;
        bps = salign * runtime->rate;
@@ -736,7 +743,7 @@ static int loopback_close(struct snd_pcm_substream *substream)
        struct loopback *loopback = substream->private_data;
        struct loopback_pcm *dpcm = substream->runtime->private_data;
 
-       loopback_timer_stop(dpcm);
+       loopback_timer_stop_sync(dpcm);
        mutex_lock(&loopback->cable_lock);
        free_cable(substream);
        mutex_unlock(&loopback->cable_lock);