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 @@
 	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 @@
 	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);