---

yaml
---
r: 270387
b: refs/heads/master
c: d5cf991
h: refs/heads/master
i:
  270385: 608a48a
  270383: 687e79c
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 97999e28c74c5908445735ac282e8b20deb67b81
+refs/heads/master: d5cf9911988287e819ce98ccd9f61ca82fbc90c6

trunk/sound/pci/hda/hda_intel.c

@@ -381,7 +381,7 @@ struct azx_dev {
 					 */
 	unsigned char stream_tag;	/* assigned stream */
 	unsigned char index;		/* stream index */
-	int device;			/* last device number assigned to */
+	int assigned_key;		/* last device# key assigned to */
 
 	unsigned int opened :1;
 	unsigned int running :1;
@@ -1613,6 +1613,9 @@ azx_assign_device(struct azx *chip, struct snd_pcm_substream *substream)
 {
 	int dev, i, nums;
 	struct azx_dev *res = NULL;
+	/* make a non-zero unique key for the substream */
+	int key = (substream->pcm->device << 16) | (substream->number << 2) |
+		(substream->stream + 1);
 
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 		dev = chip->playback_index_offset;
@@ -1624,12 +1627,12 @@ azx_assign_device(struct azx *chip, struct snd_pcm_substream *substream)
 	for (i = 0; i < nums; i++, dev++)
 		if (!chip->azx_dev[dev].opened) {
 			res = &chip->azx_dev[dev];
-			if (res->device == substream->pcm->device)
+			if (res->assigned_key == key)
 				break;
 		}
 	if (res) {
 		res->opened = 1;
-		res->device = substream->pcm->device;
+		res->assigned_key = key;
 	}
 	return res;
 }