diff options
| author | Douglas Schilling Landgraf <dougsland@redhat.com> | 2009-02-08 15:17:15 -0200 |
|---|---|---|
| committer | Douglas Schilling Landgraf <dougsland@redhat.com> | 2009-02-08 15:17:15 -0200 |
| commit | c06f528a6de5324f104965c8a90907211963e29e (patch) | |
| tree | 8b3b990dd5017cccc905712617a04d2b3d1f8b9b | |
| parent | 96f4a3677c2e17fe91f9956779fad977ec6a8f8c (diff) | |
| download | mediapointer-dvb-s2-c06f528a6de5324f104965c8a90907211963e29e.tar.gz mediapointer-dvb-s2-c06f528a6de5324f104965c8a90907211963e29e.tar.bz2 | |
em28xx-audio: Add spinlock for trigger
From: Douglas Schilling Landgraf <dougsland@redhat.com>
Added spinlock for trigger session
Priority: high
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
| -rw-r--r-- | linux/drivers/media/video/em28xx/em28xx-audio.c | 14 |
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) |