ASoC: cleanup mutex lock

Merge series from Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>:

ASoC is using many type of mutex lock, but
some of them has helper function, but some doesn't.
Or, it has helper function, but is static.

This patch-set adds helper function and use it.

include/sound/soc-card.h

@@ -9,10 +9,25 @@
 #define __SOC_CARD_H
 
 enum snd_soc_card_subclass {
-	SND_SOC_CARD_CLASS_INIT		= 0,
+	SND_SOC_CARD_CLASS_ROOT		= 0,
 	SND_SOC_CARD_CLASS_RUNTIME	= 1,
 };
 
+static inline void snd_soc_card_mutex_lock_root(struct snd_soc_card *card)
+{
+	mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_ROOT);
+}
+
+static inline void snd_soc_card_mutex_lock(struct snd_soc_card *card)
+{
+	mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
+}
+
+static inline void snd_soc_card_mutex_unlock(struct snd_soc_card *card)
+{
+	mutex_unlock(&card->mutex);
+}
+
 struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
 					       const char *name);
 int snd_soc_card_jack_new(struct snd_soc_card *card, const char *id, int type,

include/sound/soc-dapm.h

@@ -527,11 +527,6 @@ enum snd_soc_dapm_type {
 	SND_SOC_DAPM_TYPE_COUNT
 };
 
-enum snd_soc_dapm_subclass {
-	SND_SOC_DAPM_CLASS_INIT		= 0,
-	SND_SOC_DAPM_CLASS_RUNTIME	= 1,
-};
-
 /*
  * DAPM audio route definition.
  *

include/sound/soc.h

@@ -1364,17 +1364,112 @@ extern struct dentry *snd_soc_debugfs_root;
 
 extern const struct dev_pm_ops snd_soc_pm_ops;
 
-/* Helper functions */
-static inline void snd_soc_dapm_mutex_lock(struct snd_soc_dapm_context *dapm)
+/*
+ *	DAPM helper functions
+ */
+enum snd_soc_dapm_subclass {
+	SND_SOC_DAPM_CLASS_ROOT		= 0,
+	SND_SOC_DAPM_CLASS_RUNTIME	= 1,
+};
+
+static inline void _snd_soc_dapm_mutex_lock_root_c(struct snd_soc_card *card)
+{
+	mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_ROOT);
+}
+
+static inline void _snd_soc_dapm_mutex_lock_c(struct snd_soc_card *card)
+{
+	mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
+}
+
+static inline void _snd_soc_dapm_mutex_unlock_c(struct snd_soc_card *card)
+{
+	mutex_unlock(&card->dapm_mutex);
+}
+
+static inline void _snd_soc_dapm_mutex_assert_held_c(struct snd_soc_card *card)
+{
+	lockdep_assert_held(&card->dapm_mutex);
+}
+
+static inline void _snd_soc_dapm_mutex_lock_root_d(struct snd_soc_dapm_context *dapm)
+{
+	_snd_soc_dapm_mutex_lock_root_c(dapm->card);
+}
+
+static inline void _snd_soc_dapm_mutex_lock_d(struct snd_soc_dapm_context *dapm)
+{
+	_snd_soc_dapm_mutex_lock_c(dapm->card);
+}
+
+static inline void _snd_soc_dapm_mutex_unlock_d(struct snd_soc_dapm_context *dapm)
+{
+	_snd_soc_dapm_mutex_unlock_c(dapm->card);
+}
+
+static inline void _snd_soc_dapm_mutex_assert_held_d(struct snd_soc_dapm_context *dapm)
+{
+	_snd_soc_dapm_mutex_assert_held_c(dapm->card);
+}
+
+#define snd_soc_dapm_mutex_lock_root(x) _Generic((x),			\
+	struct snd_soc_card * :		_snd_soc_dapm_mutex_lock_root_c, \
+	struct snd_soc_dapm_context * :	_snd_soc_dapm_mutex_lock_root_d)(x)
+#define snd_soc_dapm_mutex_lock(x) _Generic((x),			\
+	struct snd_soc_card * :		_snd_soc_dapm_mutex_lock_c,	\
+	struct snd_soc_dapm_context * :	_snd_soc_dapm_mutex_lock_d)(x)
+#define snd_soc_dapm_mutex_unlock(x) _Generic((x),			\
+	struct snd_soc_card * :		_snd_soc_dapm_mutex_unlock_c,	\
+	struct snd_soc_dapm_context * :	_snd_soc_dapm_mutex_unlock_d)(x)
+#define snd_soc_dapm_mutex_assert_held(x) _Generic((x),			\
+	struct snd_soc_card * :		_snd_soc_dapm_mutex_assert_held_c, \
+	struct snd_soc_dapm_context * :	_snd_soc_dapm_mutex_assert_held_d)(x)
+
+/*
+ *	PCM helper functions
+ */
+static inline void _snd_soc_dpcm_mutex_lock_c(struct snd_soc_card *card)
+{
+	mutex_lock_nested(&card->pcm_mutex, card->pcm_subclass);
+}
+
+static inline void _snd_soc_dpcm_mutex_unlock_c(struct snd_soc_card *card)
 {
-	mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
+	mutex_unlock(&card->pcm_mutex);
 }
 
-static inline void snd_soc_dapm_mutex_unlock(struct snd_soc_dapm_context *dapm)
+static inline void _snd_soc_dpcm_mutex_assert_held_c(struct snd_soc_card *card)
 {
-	mutex_unlock(&dapm->card->dapm_mutex);
+	lockdep_assert_held(&card->pcm_mutex);
 }
 
+static inline void _snd_soc_dpcm_mutex_lock_r(struct snd_soc_pcm_runtime *rtd)
+{
+	_snd_soc_dpcm_mutex_lock_c(rtd->card);
+}
+
+static inline void _snd_soc_dpcm_mutex_unlock_r(struct snd_soc_pcm_runtime *rtd)
+{
+	_snd_soc_dpcm_mutex_unlock_c(rtd->card);
+}
+
+static inline void _snd_soc_dpcm_mutex_assert_held_r(struct snd_soc_pcm_runtime *rtd)
+{
+	_snd_soc_dpcm_mutex_assert_held_c(rtd->card);
+}
+
+#define snd_soc_dpcm_mutex_lock(x) _Generic((x),			\
+	 struct snd_soc_card * :	_snd_soc_dpcm_mutex_lock_c,	\
+	 struct snd_soc_pcm_runtime * :	_snd_soc_dpcm_mutex_lock_r)(x)
+
+#define snd_soc_dpcm_mutex_unlock(x) _Generic((x),			\
+	 struct snd_soc_card * :	_snd_soc_dpcm_mutex_unlock_c,	\
+	 struct snd_soc_pcm_runtime * :	_snd_soc_dpcm_mutex_unlock_r)(x)
+
+#define snd_soc_dpcm_mutex_assert_held(x) _Generic((x),		\
+	struct snd_soc_card * :		_snd_soc_dpcm_mutex_assert_held_c, \
+	struct snd_soc_pcm_runtime * :	_snd_soc_dpcm_mutex_assert_held_r)(x)
+
 #include <sound/soc-component.h>
 #include <sound/soc-card.h>
 #include <sound/soc-jack.h>

sound/soc/soc-component.c

@@ -550,7 +550,7 @@ int snd_soc_component_compr_get_caps(struct snd_compr_stream *cstream,
 	struct snd_soc_component *component;
 	int i, ret = 0;
 
-	mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
+	snd_soc_dpcm_mutex_lock(rtd);
 
 	for_each_rtd_components(rtd, i, component) {
 		if (component->driver->compress_ops &&
@@ -561,7 +561,7 @@ int snd_soc_component_compr_get_caps(struct snd_compr_stream *cstream,
 		}
 	}
 
-	mutex_unlock(&rtd->card->pcm_mutex);
+	snd_soc_dpcm_mutex_unlock(rtd);
 
 	return soc_component_ret(component, ret);
 }
@@ -574,7 +574,7 @@ int snd_soc_component_compr_get_codec_caps(struct snd_compr_stream *cstream,
 	struct snd_soc_component *component;
 	int i, ret = 0;
 
-	mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
+	snd_soc_dpcm_mutex_lock(rtd);
 
 	for_each_rtd_components(rtd, i, component) {
 		if (component->driver->compress_ops &&
@@ -585,7 +585,7 @@ int snd_soc_component_compr_get_codec_caps(struct snd_compr_stream *cstream,
 		}
 	}
 
-	mutex_unlock(&rtd->card->pcm_mutex);
+	snd_soc_dpcm_mutex_unlock(rtd);
 
 	return soc_component_ret(component, ret);
 }
@@ -638,7 +638,7 @@ int snd_soc_component_compr_copy(struct snd_compr_stream *cstream,
 	struct snd_soc_component *component;
 	int i, ret = 0;
 
-	mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
+	snd_soc_dpcm_mutex_lock(rtd);
 
 	for_each_rtd_components(rtd, i, component) {
 		if (component->driver->compress_ops &&
@@ -649,7 +649,7 @@ int snd_soc_component_compr_copy(struct snd_compr_stream *cstream,
 		}
 	}
 
-	mutex_unlock(&rtd->card->pcm_mutex);
+	snd_soc_dpcm_mutex_unlock(rtd);
 
 	return soc_component_ret(component, ret);
 }

sound/soc/soc-compress.c

@@ -62,7 +62,7 @@ static int soc_compr_clean(struct snd_compr_stream *cstream, int rollback)
 	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
 	int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
 
-	mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
+	snd_soc_dpcm_mutex_lock(rtd);
 
 	if (!rollback)
 		snd_soc_runtime_deactivate(rtd, stream);
@@ -84,7 +84,7 @@ static int soc_compr_clean(struct snd_compr_stream *cstream, int rollback)
 	if (!rollback)
 		snd_soc_dapm_stream_stop(rtd, stream);
 
-	mutex_unlock(&rtd->card->pcm_mutex);
+	snd_soc_dpcm_mutex_unlock(rtd);
 
 	snd_soc_pcm_component_pm_runtime_put(rtd, cstream, rollback);
 
@@ -107,7 +107,7 @@ static int soc_compr_open(struct snd_compr_stream *cstream)
 	if (ret < 0)
 		goto err_no_lock;
 
-	mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
+	snd_soc_dpcm_mutex_lock(rtd);
 
 	ret = snd_soc_dai_compr_startup(cpu_dai, cstream);
 	if (ret < 0)
@@ -123,7 +123,7 @@ static int soc_compr_open(struct snd_compr_stream *cstream)
 
 	snd_soc_runtime_activate(rtd, stream);
 err:
-	mutex_unlock(&rtd->card->pcm_mutex);
+	snd_soc_dpcm_mutex_unlock(rtd);
 err_no_lock:
 	if (ret < 0)
 		soc_compr_clean(cstream, 1);
@@ -140,13 +140,13 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream)
 	int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
 	int ret;
 
-	mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
+	snd_soc_card_mutex_lock(fe->card);
 
 	ret = dpcm_path_get(fe, stream, &list);
 	if (ret < 0)
 		goto be_err;
 
-	mutex_lock_nested(&fe->card->pcm_mutex, fe->card->pcm_subclass);
+	snd_soc_dpcm_mutex_lock(fe);
 
 	/* calculate valid and active FE <-> BE dpcms */
 	dpcm_process_paths(fe, stream, &list, 1);
@@ -182,9 +182,9 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream)
 	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
 
 	snd_soc_runtime_activate(fe, stream);
-	mutex_unlock(&fe->card->pcm_mutex);
+	snd_soc_dpcm_mutex_unlock(fe);
 
-	mutex_unlock(&fe->card->mutex);
+	snd_soc_card_mutex_unlock(fe->card);
 
 	return 0;
 
@@ -196,7 +196,7 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream)
 	dpcm_path_put(&list);
 be_err:
 	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
-	mutex_unlock(&fe->card->mutex);
+	snd_soc_card_mutex_unlock(fe->card);
 	return ret;
 }
 
@@ -207,9 +207,9 @@ static int soc_compr_free_fe(struct snd_compr_stream *cstream)
 	struct snd_soc_dpcm *dpcm;
 	int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
 
-	mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
+	snd_soc_card_mutex_lock(fe->card);
 
-	mutex_lock_nested(&fe->card->pcm_mutex, fe->card->pcm_subclass);
+	snd_soc_dpcm_mutex_lock(fe);
 	snd_soc_runtime_deactivate(fe, stream);
 
 	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
@@ -229,7 +229,7 @@ static int soc_compr_free_fe(struct snd_compr_stream *cstream)
 
 	dpcm_be_disconnect(fe, stream);
 
-	mutex_unlock(&fe->card->pcm_mutex);
+	snd_soc_dpcm_mutex_unlock(fe);
 
 	snd_soc_link_compr_shutdown(cstream, 0);
 
@@ -237,7 +237,7 @@ static int soc_compr_free_fe(struct snd_compr_stream *cstream)
 
 	snd_soc_dai_compr_shutdown(cpu_dai, cstream, 0);
 
-	mutex_unlock(&fe->card->mutex);
+	snd_soc_card_mutex_unlock(fe->card);
 	return 0;
 }
 
@@ -249,7 +249,7 @@ static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd)
 	int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
 	int ret;
 
-	mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
+	snd_soc_dpcm_mutex_lock(rtd);
 
 	ret = snd_soc_component_compr_trigger(cstream, cmd);
 	if (ret < 0)
@@ -269,7 +269,7 @@ static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd)
 	}
 
 out:
-	mutex_unlock(&rtd->card->pcm_mutex);
+	snd_soc_dpcm_mutex_unlock(rtd);
 	return ret;
 }
 
@@ -284,7 +284,7 @@ static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd)
 	    cmd == SND_COMPR_TRIGGER_DRAIN)
 		return snd_soc_component_compr_trigger(cstream, cmd);
 
-	mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
+	snd_soc_card_mutex_lock(fe->card);
 
 	ret = snd_soc_dai_compr_trigger(cpu_dai, cstream, cmd);
 	if (ret < 0)
@@ -315,7 +315,7 @@ static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd)
 
 out:
 	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
-	mutex_unlock(&fe->card->mutex);
+	snd_soc_card_mutex_unlock(fe->card);
 	return ret;
 }
 
@@ -327,7 +327,7 @@ static int soc_compr_set_params(struct snd_compr_stream *cstream,
 	int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
 	int ret;
 
-	mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
+	snd_soc_dpcm_mutex_lock(rtd);
 
 	/*
 	 * First we call set_params for the CPU DAI, then the component
@@ -352,14 +352,14 @@ static int soc_compr_set_params(struct snd_compr_stream *cstream,
 
 	/* cancel any delayed stream shutdown that is pending */
 	rtd->pop_wait = 0;
-	mutex_unlock(&rtd->card->pcm_mutex);
+	snd_soc_dpcm_mutex_unlock(rtd);
 
 	cancel_delayed_work_sync(&rtd->delayed_work);
 
 	return 0;
 
 err:
-	mutex_unlock(&rtd->card->pcm_mutex);
+	snd_soc_dpcm_mutex_unlock(rtd);
 	return ret;
 }
 
@@ -373,7 +373,7 @@ static int soc_compr_set_params_fe(struct snd_compr_stream *cstream,
 	int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
 	int ret;
 
-	mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
+	snd_soc_card_mutex_lock(fe->card);
 
 	/*
 	 * Create an empty hw_params for the BE as the machine driver must
@@ -404,14 +404,14 @@ static int soc_compr_set_params_fe(struct snd_compr_stream *cstream,
 	ret = snd_soc_link_compr_set_params(cstream);
 	if (ret < 0)
 		goto out;
-	mutex_lock_nested(&fe->card->pcm_mutex, fe->card->pcm_subclass);
+	snd_soc_dpcm_mutex_lock(fe);
 	dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START);
-	mutex_unlock(&fe->card->pcm_mutex);
+	snd_soc_dpcm_mutex_unlock(fe);
 	fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
 
 out:
 	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
-	mutex_unlock(&fe->card->mutex);
+	snd_soc_card_mutex_unlock(fe->card);
 	return ret;
 }
 
@@ -422,7 +422,7 @@ static int soc_compr_get_params(struct snd_compr_stream *cstream,
 	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 	int ret = 0;
 
-	mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
+	snd_soc_dpcm_mutex_lock(rtd);
 
 	ret = snd_soc_dai_compr_get_params(cpu_dai, cstream, params);
 	if (ret < 0)
@@ -430,7 +430,7 @@ static int soc_compr_get_params(struct snd_compr_stream *cstream,
 
 	ret = snd_soc_component_compr_get_params(cstream, params);
 err:
-	mutex_unlock(&rtd->card->pcm_mutex);
+	snd_soc_dpcm_mutex_unlock(rtd);
 	return ret;
 }
 
@@ -440,7 +440,7 @@ static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes)
 	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 	int ret;
 
-	mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
+	snd_soc_dpcm_mutex_lock(rtd);
 
 	ret = snd_soc_dai_compr_ack(cpu_dai, cstream, bytes);
 	if (ret < 0)
@@ -448,7 +448,7 @@ static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes)
 
 	ret = snd_soc_component_compr_ack(cstream, bytes);
 err:
-	mutex_unlock(&rtd->card->pcm_mutex);
+	snd_soc_dpcm_mutex_unlock(rtd);
 	return ret;
 }
 
@@ -459,7 +459,7 @@ static int soc_compr_pointer(struct snd_compr_stream *cstream,
 	int ret;
 	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 
-	mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
+	snd_soc_dpcm_mutex_lock(rtd);
 
 	ret = snd_soc_dai_compr_pointer(cpu_dai, cstream, tstamp);
 	if (ret < 0)
@@ -467,7 +467,7 @@ static int soc_compr_pointer(struct snd_compr_stream *cstream,
 
 	ret = snd_soc_component_compr_pointer(cstream, tstamp);
 out:
-	mutex_unlock(&rtd->card->pcm_mutex);
+	snd_soc_dpcm_mutex_unlock(rtd);
 	return ret;
 }
 

sound/soc/soc-core.c

@@ -348,7 +348,7 @@ void snd_soc_close_delayed_work(struct snd_soc_pcm_runtime *rtd)
 	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
 	int playback = SNDRV_PCM_STREAM_PLAYBACK;
 
-	mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
+	snd_soc_dpcm_mutex_lock(rtd);
 
 	dev_dbg(rtd->dev,
 		"ASoC: pop wq checking: %s status: %s waiting: %s\n",
@@ -364,7 +364,7 @@ void snd_soc_close_delayed_work(struct snd_soc_pcm_runtime *rtd)
 					  SND_SOC_DAPM_STREAM_STOP);
 	}
 
-	mutex_unlock(&rtd->card->pcm_mutex);
+	snd_soc_dpcm_mutex_unlock(rtd);
 }
 EXPORT_SYMBOL_GPL(snd_soc_close_delayed_work);
 
@@ -1938,7 +1938,7 @@ static int snd_soc_bind_card(struct snd_soc_card *card)
 	int ret;
 
 	mutex_lock(&client_mutex);
-	mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
+	snd_soc_card_mutex_lock_root(card);
 
 	snd_soc_dapm_init(&card->dapm, card, NULL);
 
@@ -2093,7 +2093,7 @@ static int snd_soc_bind_card(struct snd_soc_card *card)
 	if (ret < 0)
 		soc_cleanup_card_resources(card);
 
-	mutex_unlock(&card->mutex);
+	snd_soc_card_mutex_unlock(card);
 	mutex_unlock(&client_mutex);
 
 	return ret;

sound/soc/soc-pcm.c

@@ -49,19 +49,6 @@ static inline int _soc_pcm_ret(struct snd_soc_pcm_runtime *rtd,
 	return ret;
 }
 
-static inline void snd_soc_dpcm_mutex_lock(struct snd_soc_pcm_runtime *rtd)
-{
-	mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
-}
-
-static inline void snd_soc_dpcm_mutex_unlock(struct snd_soc_pcm_runtime *rtd)
-{
-	mutex_unlock(&rtd->card->pcm_mutex);
-}
-
-#define snd_soc_dpcm_mutex_assert_held(rtd) \
-	lockdep_assert_held(&(rtd)->card->pcm_mutex)
-
 static inline void snd_soc_dpcm_stream_lock_irq(struct snd_soc_pcm_runtime *rtd,
 						int stream)
 {
@@ -2664,7 +2651,7 @@ int snd_soc_dpcm_runtime_update(struct snd_soc_card *card)
 	struct snd_soc_pcm_runtime *fe;
 	int ret = 0;
 
-	mutex_lock_nested(&card->pcm_mutex, card->pcm_subclass);
+	snd_soc_dpcm_mutex_lock(card);
 	/* shutdown all old paths first */
 	for_each_card_rtds(card, fe) {
 		ret = soc_dpcm_fe_runtime_update(fe, 0);
@@ -2680,7 +2667,7 @@ int snd_soc_dpcm_runtime_update(struct snd_soc_card *card)
 	}
 
 out:
-	mutex_unlock(&card->pcm_mutex);
+	snd_soc_dpcm_mutex_unlock(card);
 	return ret;
 }
 EXPORT_SYMBOL_GPL(snd_soc_dpcm_runtime_update);