[media] saa7134: Fix unlocked snd_pcm_stop() call

snd_pcm_stop() must be called in the PCM substream lock context.

Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/media/pci/saa7134/saa7134-alsa.c b/drivers/media/pci/saa7134/saa7134-alsa.c
index 10460fd3ce39..dbcdfbf8aed0 100644
--- a/drivers/media/pci/saa7134/saa7134-alsa.c
+++ b/drivers/media/pci/saa7134/saa7134-alsa.c
@@ -172,7 +172,9 @@ static void saa7134_irq_alsa_done(struct saa7134_dev *dev,
                 dprintk("irq: overrun [full=%d/%d] - Blocks in %d\n",dev->dmasound.read_count,
                         dev->dmasound.bufsize, dev->dmasound.blocks);
                 spin_unlock(&dev->slock);
+                snd_pcm_stream_lock(dev->dmasound.substream);
                 snd_pcm_stop(dev->dmasound.substream,SNDRV_PCM_STATE_XRUN);
+                snd_pcm_stream_unlock(dev->dmasound.substream);
                 return;
         }