diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h
index aa994d6e6d35..4cbbb1744740 100644
--- a/include/sound/hdaudio.h
+++ b/include/sound/hdaudio.h
@@ -179,9 +179,9 @@ static inline int snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid,
 
 #ifdef CONFIG_PM
 int snd_hdac_power_up(struct hdac_device *codec);
-int snd_hdac_power_down(struct hdac_device *codec);
+void snd_hdac_power_down(struct hdac_device *codec);
 int snd_hdac_power_up_pm(struct hdac_device *codec);
-int snd_hdac_power_down_pm(struct hdac_device *codec);
+void snd_hdac_power_down_pm(struct hdac_device *codec);
 int snd_hdac_keep_power_up(struct hdac_device *codec);
 
 /* call this at entering into suspend/resume callbacks in codec driver */
@@ -207,9 +207,9 @@ static inline bool snd_hdac_is_power_on(struct hdac_device *codec)
 }
 #else
 static inline int snd_hdac_power_up(struct hdac_device *codec) { return 0; }
-static inline int snd_hdac_power_down(struct hdac_device *codec) { return 0; }
+static inline void snd_hdac_power_down(struct hdac_device *codec) {}
 static inline int snd_hdac_power_up_pm(struct hdac_device *codec) { return 0; }
-static inline int snd_hdac_power_down_pm(struct hdac_device *codec) { return 0; }
+static inline void snd_hdac_power_down_pm(struct hdac_device *codec) {}
 static inline int snd_hdac_keep_power_up(struct hdac_device *codec) { return 0; }
 static inline void snd_hdac_enter_pm(struct hdac_device *codec) {}
 static inline void snd_hdac_leave_pm(struct hdac_device *codec) {}
diff --git a/sound/hda/core/device.c b/sound/hda/core/device.c
index a45f61e12c1a..6187ffaedbfa 100644
--- a/sound/hda/core/device.c
+++ b/sound/hda/core/device.c
@@ -572,14 +572,12 @@ EXPORT_SYMBOL_GPL(snd_hdac_power_up);
 /**
  * snd_hdac_power_down - power down the codec
  * @codec: the codec object
- *
- * Returns zero if successful, or a negative error code.
  */
-int snd_hdac_power_down(struct hdac_device *codec)
+void snd_hdac_power_down(struct hdac_device *codec)
 {
 	struct device *dev = &codec->dev;
 
-	return pm_runtime_put_autosuspend(dev);
+	pm_runtime_put_autosuspend(dev);
 }
 EXPORT_SYMBOL_GPL(snd_hdac_power_down);
 
@@ -624,14 +622,11 @@ int snd_hdac_keep_power_up(struct hdac_device *codec)
  *
  * Like snd_hdac_power_up_pm(), this function is used in a recursive
  * code path like init code which may be called by PM suspend/resume again.
- *
- * Returns zero if successful, or a negative error code.
  */
-int snd_hdac_power_down_pm(struct hdac_device *codec)
+void snd_hdac_power_down_pm(struct hdac_device *codec)
 {
 	if (atomic_dec_if_positive(&codec->in_pm) < 0)
-		return snd_hdac_power_down(codec);
-	return 0;
+		snd_hdac_power_down(codec);
 }
 EXPORT_SYMBOL_GPL(snd_hdac_power_down_pm);
 #endif