diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h
index 45f944d57982..ca1d9a70d026 100644
--- a/include/sound/hdaudio.h
+++ b/include/sound/hdaudio.h
@@ -297,7 +297,7 @@ struct hdac_rb {
  * @num_streams: streams supported
  * @idx: HDA link index
  * @hlink_list: link list of HDA links
- * @lock: lock for link mgmt
+ * @lock: lock for link and display power mgmt
  * @cmd_dma_state: state of cmd DMAs: CORB and RIRB
  */
 struct hdac_bus {
@@ -363,6 +363,7 @@ struct hdac_bus {
 	/* locks */
 	spinlock_t reg_lock;
 	struct mutex cmd_mutex;
+	struct mutex lock;
 
 	/* DRM component interface */
 	struct drm_audio_component *audio_component;
@@ -373,11 +374,9 @@ struct hdac_bus {
 	int num_streams;
 	int idx;
 
+	/* link management */
 	struct list_head hlink_list;
-
-	struct mutex lock;
 	bool cmd_dma_state;
-
 };
 
 int snd_hdac_bus_init(struct hdac_bus *bus, struct device *dev,
diff --git a/sound/hda/ext/hdac_ext_bus.c b/sound/hda/ext/hdac_ext_bus.c
index ec7715c6b0c0..c203af71a099 100644
--- a/sound/hda/ext/hdac_ext_bus.c
+++ b/sound/hda/ext/hdac_ext_bus.c
@@ -104,9 +104,7 @@ int snd_hdac_ext_bus_init(struct hdac_bus *bus, struct device *dev,
 		return ret;
 
 	bus->ext_ops = ext_ops;
-	INIT_LIST_HEAD(&bus->hlink_list);
 	bus->idx = idx++;
-
 	bus->cmd_dma_state = true;
 
 	return 0;
diff --git a/sound/hda/hdac_bus.c b/sound/hda/hdac_bus.c
index ad8eee08013f..10e5d261fde1 100644
--- a/sound/hda/hdac_bus.c
+++ b/sound/hda/hdac_bus.c
@@ -39,6 +39,7 @@ int snd_hdac_bus_init(struct hdac_bus *bus, struct device *dev,
 	spin_lock_init(&bus->reg_lock);
 	mutex_init(&bus->cmd_mutex);
 	mutex_init(&bus->lock);
+	INIT_LIST_HEAD(&bus->hlink_list);
 	bus->irq = -1;
 	return 0;
 }