ASoC: dapm: Use DAPM mutex for DAPM ops instead of codec mutex

It has now become necessary to use a DAPM mutex instead of the codec
mutex to lock the DAPM operations. This is due to the recent multi
component support and forth coming Dynamic PCM updates.

Currently we lock DAPM operations with the codec mutex of the calling
RTD context. However, DAPM operations can span the whole card context
and all components.

This patch updates the DAPM operations that use the codec mutex to
now use the DAPM mutex PCM subclass for all DAPM ops.

We also add a mutex subclass for DAPM init and PCM operations.

Signed-off-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/sound/soc.h b/include/sound/soc.h
index 70de2f82e872..66fd9bc9789d 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -805,6 +805,7 @@ struct snd_soc_card {
 
         struct list_head list;
         struct mutex mutex;
+        struct mutex dapm_mutex;
 
         bool instantiated;