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path: root/sound/pci/hda/hda_intel.c
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Diffstat (limited to 'sound/pci/hda/hda_intel.c')
-rw-r--r--sound/pci/hda/hda_intel.c21
1 files changed, 15 insertions, 6 deletions
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index ff8ad46cc50e..ec9c348336cc 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -356,6 +356,7 @@ struct azx_dev {
*/
unsigned char stream_tag; /* assigned stream */
unsigned char index; /* stream index */
+ int device; /* last device number assigned to */
unsigned int opened :1;
unsigned int running :1;
@@ -1441,10 +1442,13 @@ static int __devinit azx_codec_configure(struct azx *chip)
*/
/* assign a stream for the PCM */
-static inline struct azx_dev *azx_assign_device(struct azx *chip, int stream)
+static inline struct azx_dev *
+azx_assign_device(struct azx *chip, struct snd_pcm_substream *substream)
{
int dev, i, nums;
- if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ struct azx_dev *res = NULL;
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
dev = chip->playback_index_offset;
nums = chip->playback_streams;
} else {
@@ -1453,10 +1457,15 @@ static inline struct azx_dev *azx_assign_device(struct azx *chip, int stream)
}
for (i = 0; i < nums; i++, dev++)
if (!chip->azx_dev[dev].opened) {
- chip->azx_dev[dev].opened = 1;
- return &chip->azx_dev[dev];
+ res = &chip->azx_dev[dev];
+ if (res->device == substream->pcm->device)
+ break;
}
- return NULL;
+ if (res) {
+ res->opened = 1;
+ res->device = substream->pcm->device;
+ }
+ return res;
}
/* release the assigned stream */
@@ -1505,7 +1514,7 @@ static int azx_pcm_open(struct snd_pcm_substream *substream)
int err;
mutex_lock(&chip->open_mutex);
- azx_dev = azx_assign_device(chip, substream->stream);
+ azx_dev = azx_assign_device(chip, substream);
if (azx_dev == NULL) {
mutex_unlock(&chip->open_mutex);
return -EBUSY;