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-rw-r--r--linux/drivers/media/video/em28xx/em28xx-audio.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/linux/drivers/media/video/em28xx/em28xx-audio.c b/linux/drivers/media/video/em28xx/em28xx-audio.c
index 921ec190d..a5a28eb19 100644
--- a/linux/drivers/media/video/em28xx/em28xx-audio.c
+++ b/linux/drivers/media/video/em28xx/em28xx-audio.c
@@ -445,19 +445,27 @@ static int snd_em28xx_capture_trigger(struct snd_pcm_substream *substream,
#endif
{
struct em28xx *dev = snd_pcm_substream_chip(substream);
+ int retval;
dprintk("Should %s capture\n", (cmd == SNDRV_PCM_TRIGGER_START)?
"start": "stop");
+
+ spin_lock(&dev->adev.slock);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
em28xx_cmd(dev, EM28XX_CAPTURE_STREAM_EN, 1);
- return 0;
+ retval = 0;
+ break;
case SNDRV_PCM_TRIGGER_STOP:
em28xx_cmd(dev, EM28XX_CAPTURE_STREAM_EN, 0);
- return 0;
+ retval = 0;
+ break;
default:
- return -EINVAL;
+ retval = -EINVAL;
}
+
+ spin_unlock(&dev->adev.slock);
+ return retval;
}
#if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 16)