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| author | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-02-06 16:52:15 -0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-02-06 16:52:15 -0200 |
| commit | 0852978825971c0dcf401c56733067a916237a96 (patch) | |
| tree | 96e62fdbabe7e5c853422e7612970b7efddc219b /linux/drivers/media/video/em28xx/em28xx-audio.c | |
| parent | db10010189a9bdd6f1bbb39f5c575169c139ea7b (diff) | |
| download | mediapointer-dvb-s2-0852978825971c0dcf401c56733067a916237a96.tar.gz mediapointer-dvb-s2-0852978825971c0dcf401c56733067a916237a96.tar.bz2 | |
em28xx-alsa: Add a missing mutex
From: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'linux/drivers/media/video/em28xx/em28xx-audio.c')
| -rw-r--r-- | linux/drivers/media/video/em28xx/em28xx-audio.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/linux/drivers/media/video/em28xx/em28xx-audio.c b/linux/drivers/media/video/em28xx/em28xx-audio.c index e97446778..37e893455 100644 --- a/linux/drivers/media/video/em28xx/em28xx-audio.c +++ b/linux/drivers/media/video/em28xx/em28xx-audio.c @@ -300,8 +300,11 @@ static int snd_em28xx_capture_open(struct snd_pcm_substream *substream) dprintk("opening device and trying to acquire exclusive lock\n"); /* Sets volume, mute, etc */ + dev->mute = 0; + mutex_lock(&dev->lock); ret = em28xx_audio_analog_set(dev); + mutex_unlock(&dev->lock); if (ret < 0) goto err; @@ -337,7 +340,9 @@ static int snd_em28xx_pcm_close(struct snd_pcm_substream *substream) dprintk("closing device\n"); dev->mute = 1; + mutex_lock(&dev->lock); em28xx_audio_analog_set(dev); + mutex_unlock(&dev->lock); if (dev->adev->users == 0 && dev->adev->shutdown == 1) { dprintk("audio users: %d\n", dev->adev->users); |