Commit 92ea42f4 authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab
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V4L/DVB (7164): em28xx-alsa: Add a missing mutex 



Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@infradead.org>
parent 00b8730f

drivers/media/video/em28xx/em28xx-audio.c

+5 −0
Original line number Diff line number Diff line
@@ -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);

drivers/media/video/em28xx/em28xx.h

+0 −1
Original line number Diff line number Diff line
@@ -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);