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| author | Takashi Iwai <tiwai@suse.de> | 2006-08-04 12:57:19 +0200 |
|---|---|---|
| committer | Jaroslav Kysela <perex@suse.cz> | 2006-09-23 10:39:59 +0200 |
| commit | 2529bba7606b23c1b7161d3c2ad486162e8650f9 (patch) | |
| tree | fc19403b51f9a8c3d080fac7acd50c3a95cb652c /sound/core/pcm.c | |
| parent | f03d68fe343d70bb06ecdb3d70dcf0e678ed99f9 (diff) | |
| download | linux-3.10-2529bba7606b23c1b7161d3c2ad486162e8650f9.tar.gz linux-3.10-2529bba7606b23c1b7161d3c2ad486162e8650f9.tar.bz2 linux-3.10-2529bba7606b23c1b7161d3c2ad486162e8650f9.zip | |
[ALSA] Fix substream selection in PCM and rawmidi
The PCM and rawmidi substreams can be selected explicitly by opening
control handle and set via *_PREFER_SUBDEVICE ioctl. But, when
multiple controls are opened, the driver gets confused.
The patch fixes the initialization of prefer_*_subdevice and the
check of multiple controls. The first set subdevice is picked up
as the valid one.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
Diffstat (limited to 'sound/core/pcm.c')
| -rw-r--r-- | sound/core/pcm.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sound/core/pcm.c b/sound/core/pcm.c index f52178abf12..ed3b0946956 100644 --- a/sound/core/pcm.c +++ b/sound/core/pcm.c @@ -792,7 +792,8 @@ int snd_pcm_attach_substream(struct snd_pcm *pcm, int stream, kctl = snd_ctl_file(list); if (kctl->pid == current->pid) { prefer_subdevice = kctl->prefer_pcm_subdevice; - break; + if (prefer_subdevice != -1) + break; } } up_read(&card->controls_rwsem); |