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| author | Marcelo Tosatti <mtosatti@redhat.com> | 2012-10-30 01:15:32 +0400 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2012-10-30 01:15:32 +0400 |
| commit | 19bf7f8ac3f8131100027281c495dbbe00cd5ae0 (patch) | |
| tree | 270b97e3ca47c0f62a1babca2ae37f79a76a309c /sound/drivers/aloop.c | |
| parent | 787c57c0fb393fe8a3974d300ddcfe30373386fe (diff) | |
| parent | 35fd3dc58da675d659513384221349ef90749a01 (diff) | |
| download | linux-19bf7f8ac3f8131100027281c495dbbe00cd5ae0.tar.xz | |
Merge remote-tracking branch 'master' into queue
Merge reason: development work has dependency on kvm patches merged
upstream.
Conflicts:
arch/powerpc/include/asm/Kbuild
arch/powerpc/include/asm/kvm_para.h
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'sound/drivers/aloop.c')
| -rw-r--r-- | sound/drivers/aloop.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sound/drivers/aloop.c b/sound/drivers/aloop.c index 5a34355e78e8..0fe6d64ff840 100644 --- a/sound/drivers/aloop.c +++ b/sound/drivers/aloop.c @@ -120,6 +120,7 @@ struct loopback_pcm { unsigned int last_drift; unsigned long last_jiffies; struct timer_list timer; + spinlock_t timer_lock; }; static struct platform_device *devices[SNDRV_CARDS]; @@ -170,6 +171,7 @@ static void loopback_timer_start(struct loopback_pcm *dpcm) unsigned long tick; unsigned int rate_shift = get_rate_shift(dpcm); + spin_lock(&dpcm->timer_lock); if (rate_shift != dpcm->pcm_rate_shift) { dpcm->pcm_rate_shift = rate_shift; dpcm->period_size_frac = frac_pos(dpcm, dpcm->pcm_period_size); @@ -182,12 +184,15 @@ static void loopback_timer_start(struct loopback_pcm *dpcm) tick = (tick + dpcm->pcm_bps - 1) / dpcm->pcm_bps; dpcm->timer.expires = jiffies + tick; add_timer(&dpcm->timer); + spin_unlock(&dpcm->timer_lock); } static inline void loopback_timer_stop(struct loopback_pcm *dpcm) { + spin_lock(&dpcm->timer_lock); del_timer(&dpcm->timer); dpcm->timer.expires = 0; + spin_unlock(&dpcm->timer_lock); } #define CABLE_VALID_PLAYBACK (1 << SNDRV_PCM_STREAM_PLAYBACK) @@ -667,6 +672,7 @@ static int loopback_open(struct snd_pcm_substream *substream) dpcm->substream = substream; setup_timer(&dpcm->timer, loopback_timer_function, (unsigned long)dpcm); + spin_lock_init(&dpcm->timer_lock); cable = loopback->cables[substream->number][dev]; if (!cable) { |