Add mutex support for platform IO operations. e.g. can be used for platform DAPM widget IO ops.
Signed-off-by: Liam Girdwood lrg@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);