1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/staging/line6/pcm.c b/drivers/staging/line6/pcm.c
index 4795f1284906..0dd08ef51398 100644
--- a/drivers/staging/line6/pcm.c
+++ b/drivers/staging/line6/pcm.c
@@ -392,8 +392,11 @@ static int snd_line6_pcm_free(struct snd_device *device)
 */
 static void pcm_disconnect_substream(struct snd_pcm_substream *substream)
 {
-        if (substream->runtime && snd_pcm_running(substream))
+        if (substream->runtime && snd_pcm_running(substream)) {
+                snd_pcm_stream_lock_irq(substream);
                 snd_pcm_stop(substream, SNDRV_PCM_STATE_DISCONNECTED);
+                snd_pcm_stream_unlock_irq(substream);
+        }
 }
 
 /*