[alsa-devel] [PATCH 1/2] ASoC: core - Add platform component mutex.

[Liam Girdwood]

Add mutex support for platform IO operations. e.g. can be used
for platform DAPM widget IO ops.

Signed-off-by: Liam Girdwood <lrg at ti.com>
---
 include/sound/soc.h  |    1 +
 sound/soc/soc-core.c |    1 +
 2 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/include/sound/soc.h b/include/sound/soc.h
index 82bd773..2ebf787 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -718,6 +718,7 @@ struct snd_soc_platform {
 	int id;
 	struct device *dev;
 	struct snd_soc_platform_driver *driver;
+	struct mutex mutex;
 
 	unsigned int suspended:1; /* platform is suspended */
 	unsigned int probed:1;
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 7978f6c..c90bb01 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -3382,6 +3382,7 @@ int snd_soc_register_platform(struct device *dev,
 	platform->dapm.dev = dev;
 	platform->dapm.platform = platform;
 	platform->dapm.stream_event = platform_drv->stream_event;
+	mutex_init(&platform->mutex);
 
 	mutex_lock(&client_mutex);
 	list_add(&platform->list, &platform_list);
-- 
1.7.5.4