ALSA: hda/component: Use guard() for mutex locks

Replace the manual mutex lock/unlock pairs with guard().

Only code refactoring, and no behavior change.

Signed-off-by: Takashi Iwai <[e-mail]>
Link: https://patch.msgid.link/[e-mail]

sound/hda/codecs/side-codecs/hda_component.c

···
 	struct hda_component *comp;
 	int i;
 
-	mutex_lock(&parent->mutex);
+	guard(mutex)(&parent->mutex);
 	for (i = 0; i < ARRAY_SIZE(parent->comps); i++) {
 		comp = hda_component_from_index(parent, i);
 		if (comp->dev && comp->acpi_notify)
 			comp->acpi_notify(acpi_device_handle(comp->adev), event, comp->dev);
 	}
-	mutex_unlock(&parent->mutex);
 }
 EXPORT_SYMBOL_NS_GPL(hda_component_acpi_device_notify, "SND_HDA_SCODEC_COMPONENT");
 
···
 	struct hda_component *comp;
 	int i;
 
-	mutex_lock(&parent->mutex);
+	guard(mutex)(&parent->mutex);
 	for (i = 0; i < ARRAY_SIZE(parent->comps); i++) {
 		comp = hda_component_from_index(parent, i);
 		if (comp->dev && comp->pre_playback_hook)
···
 		if (comp->dev && comp->post_playback_hook)
 			comp->post_playback_hook(comp->dev, action);
 	}
-	mutex_unlock(&parent->mutex);
 }
 EXPORT_SYMBOL_NS_GPL(hda_component_manager_playback_hook, "SND_HDA_SCODEC_COMPONENT");
 
···
 int hda_component_manager_bind(struct hda_codec *cdc,
 			       struct hda_component_parent *parent)
 {
-	int ret;
-
 	/* Init shared and component specific data */
 	memset(parent->comps, 0, sizeof(parent->comps));
 
-	mutex_lock(&parent->mutex);
-	ret = component_bind_all(hda_codec_dev(cdc), parent);
-	mutex_unlock(&parent->mutex);
-
-	return ret;
+	guard(mutex)(&parent->mutex);
+	return component_bind_all(hda_codec_dev(cdc), parent);
 }
 EXPORT_SYMBOL_NS_GPL(hda_component_manager_bind, "SND_HDA_SCODEC_COMPONENT");
 

sound/hda/codecs/side-codecs/hda_component.h

···
 static inline void hda_component_manager_unbind(struct hda_codec *cdc,
 						struct hda_component_parent *parent)
 {
-	mutex_lock(&parent->mutex);
+	guard(mutex)(&parent->mutex);
 	component_unbind_all(hda_codec_dev(cdc), parent);
-	mutex_unlock(&parent->mutex);
 }
 
 #endif /* ifndef __HDA_COMPONENT_H__ */