ASoC: Lock the CODEC in PXA external jack controls

When doing anything with the system, especially DAPM, we need to hold the
CODEC mutex.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>

1 files changed, 5 insertions, 0 deletions

diff --git a/sound/soc/pxa/tosa.c b/sound/soc/pxa/tosa.c
index 73d0edd8ded9..7b983f935454 100644
--- a/sound/soc/pxa/tosa.c
+++ b/sound/soc/pxa/tosa.c
@@ -81,8 +81,13 @@ static int tosa_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 */
         tosa_ext_control(codec);
+
+        mutex_unlock(&codec->mutex);
+
         return 0;
 }