From: Douglas Schilling Landgraf Date: Sun, 8 Feb 2009 17:17:15 +0000 (-0300) Subject: V4L/DVB (10520): em28xx-audio: Add spinlock for trigger X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=df39ca6437410b9428ebd3ce30fcde193782410d;p=linux-beck.git V4L/DVB (10520): em28xx-audio: Add spinlock for trigger Added spinlock for trigger session Signed-off-by: Douglas Schilling Landgraf Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/video/em28xx/em28xx-audio.c b/drivers/media/video/em28xx/em28xx-audio.c index 52c6657d61cf..8e9957dbdbec 100644 --- a/drivers/media/video/em28xx/em28xx-audio.c +++ b/drivers/media/video/em28xx/em28xx-audio.c @@ -381,19 +381,27 @@ static int snd_em28xx_capture_trigger(struct snd_pcm_substream *substream, int cmd) { 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; } static snd_pcm_uframes_t snd_em28xx_capture_pointer(struct snd_pcm_substream