greybus: audio: use variable 'is_connected' to maintain module state

[karo-tx-linux.git] / drivers / staging / greybus / audio_codec.h

diff --git a/drivers/staging/greybus/audio_codec.h b/drivers/staging/greybus/audio_codec.h
index 56110913b70e7def241b26be7609266fd20a738c..4c19bd8844881fadafe513ad17c623f4cbdcdefa 100644 (file)
--- a/drivers/staging/greybus/audio_codec.h
+++ b/drivers/staging/greybus/audio_codec.h
@@ -108,6 +108,15 @@ struct gbaudio_codec_info {
        int manager_id;
        char name[NAME_SIZE];
 
+       /*
+        * there can be a rece condition between gb_audio_disconnect()
+        * and dai->trigger from above ASoC layer.
+        * To avoid any deadlock over codec_info->lock, atomic variable
+        * is used.
+        */
+       atomic_t is_connected;
+       struct mutex lock;
+
        /* soc related data */
        struct snd_soc_codec *codec;
        struct device *dev;
@@ -139,7 +148,6 @@ struct gbaudio_codec_info {
        struct list_head widget_list;
        struct list_head codec_ctl_list;
        struct list_head widget_ctl_list;
-       struct mutex lock;
 };
 
 struct gbaudio_dai *gbaudio_find_dai(struct gbaudio_codec_info *gbcodec,