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V4L/DVB (7164): em28xx-alsa: Add a missing mutex 

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Mauro Carvalho Chehab 2008-02-06 18:52:15 -03:00
parent 00b8730f5d
commit 92ea42f442
2 changed files with 5 additions and 1 deletions
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5
drivers/media/video/em28xx/em28xx-audio.c
View File

@ -269,8 +269,11 @@ 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;
@ -302,7 +305,9 @@ 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);

1
drivers/media/video/em28xx/em28xx.h
View File

@ -345,7 +345,6 @@ int em28xx_read_reg(struct em28xx *dev, u16 reg);
int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
int len);
int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
int em28xx_set_audio_source(struct em28xx *dev);
int em28xx_audio_analog_set(struct em28xx *dev);
int em28xx_colorlevels_set_default(struct em28xx *dev);