1 files changed, 4 insertions, 0 deletions

diff --git a/sound/soc/pxa/magician.c b/sound/soc/pxa/magician.c
index f1acdc57cfd8..98cb9906e795 100644
--- a/sound/soc/pxa/magician.c
+++ b/sound/soc/pxa/magician.c
@@ -74,9 +74,13 @@ static int magician_startup(struct snd_pcm_substream *substream)
         struct snd_soc_pcm_runtime *rtd = substream->private_data;
         struct snd_soc_codec *codec = rtd->codec;
 
+        mutex_lock(&codec->mutex);
+
         /* check the jack status at stream startup */
         magician_ext_control(codec);
 
+        mutex_unlock(&codec->mutex);
+
         return 0;
 }