--- a/include/sound/soc-dai.h
+++ b/include/sound/soc-dai.h
@@ -223,7 +223,7 @@ struct snd_soc_dai {
 	union {
 		struct snd_soc_codec *codec;
 		struct snd_soc_platform *platform;
-	};
+	} parent;
 
 	struct list_head list;
 };