[alsa-devel] [PATCH 3/4] ALSA: pcm: Don't notify internal PCMs

[Takashi Iwai]

Notifier shouldn't listen to the changes of internal PCMs.

Signed-off-by: Takashi Iwai <tiwai at suse.de>
---
 sound/core/pcm.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/sound/core/pcm.c b/sound/core/pcm.c
index 92bbb5143b83..3cf345426171 100644
--- a/sound/core/pcm.c
+++ b/sound/core/pcm.c
@@ -888,8 +888,9 @@ static int snd_pcm_free(struct snd_pcm *pcm)
 
 	if (!pcm)
 		return 0;
-	list_for_each_entry(notify, &snd_pcm_notify_list, list) {
-		notify->n_unregister(pcm);
+	if (!pcm->internal) {
+		list_for_each_entry(notify, &snd_pcm_notify_list, list)
+			notify->n_unregister(pcm);
 	}
 	if (pcm->private_free)
 		pcm->private_free(pcm);
@@ -1129,7 +1130,7 @@ static int snd_pcm_dev_disconnect(struct snd_device *device)
 	mutex_lock(&pcm->open_mutex);
 	wake_up(&pcm->open_wait);
 	list_del_init(&pcm->list);
-	for (cidx = 0; cidx < 2; cidx++)
+	for (cidx = 0; cidx < 2; cidx++) {
 		for (substream = pcm->streams[cidx].substream; substream; substream = substream->next) {
 			snd_pcm_stream_lock_irq(substream);
 			if (substream->runtime) {
@@ -1139,8 +1140,10 @@ static int snd_pcm_dev_disconnect(struct snd_device *device)
 			}
 			snd_pcm_stream_unlock_irq(substream);
 		}
-	list_for_each_entry(notify, &snd_pcm_notify_list, list) {
-		notify->n_disconnect(pcm);
+	}
+	if (!pcm->internal) {
+		list_for_each_entry(notify, &snd_pcm_notify_list, list)
+			notify->n_disconnect(pcm);
 	}
 	for (cidx = 0; cidx < 2; cidx++) {
 		snd_unregister_device(&pcm->streams[cidx].dev);
-- 
2.3.0