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[ALSA] check for linked substreams of different cards

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It is possible to have linked substreams that belong to different cards
and/or different drivers.  This patch changes some drivers to make sure
that they do not incorrectly try to handle substreams of a different
card.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
Clemens Ladisch 2007-07-30 08:14:31 +02:00 committed by Jaroslav Kysela
parent 82467611ff
commit 29998d24ab
4 changed files with 14 additions and 4 deletions
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3
sound/pci/ca0106/ca0106_main.c
View File

@ -853,6 +853,9 @@ static int snd_ca0106_pcm_trigger_playback(struct snd_pcm_substream *substream,
break;
}
snd_pcm_group_for_each_entry(s, substream) {
if (snd_pcm_substream_chip(s) != emu ||
s->stream != SNDRV_PCM_STREAM_PLAYBACK)
continue;
runtime = s->runtime;
epcm = runtime->private_data;
channel = epcm->channel_id;

3
sound/pci/emu10k1/p16v.c
View File

@ -448,6 +448,9 @@ static int snd_p16v_pcm_trigger_playback(struct snd_pcm_substream *substream,
break;
}
snd_pcm_group_for_each_entry(s, substream) {
if (snd_pcm_substream_chip(s) != emu ||
s->stream != SNDRV_PCM_STREAM_PLAYBACK)
continue;
runtime = s->runtime;
epcm = runtime->private_data;
channel = substream->pcm->device-emu->p16v_device_offset;

10
sound/pci/ice1712/ice1724.c
View File

@ -341,10 +341,12 @@ static int snd_vt1724_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
what = 0;
snd_pcm_group_for_each_entry(s, substream) {
const struct vt1724_pcm_reg *reg;
reg = s->runtime->private_data;
what |= reg->start;
snd_pcm_trigger_done(s, substream);
if (snd_pcm_substream_chip(s) == ice) {
const struct vt1724_pcm_reg *reg;
reg = s->runtime->private_data;
what |= reg->start;
snd_pcm_trigger_done(s, substream);
}
}
switch (cmd) {

2
sound/pci/pcxhr/pcxhr.c
View File

@ -646,6 +646,8 @@ static int pcxhr_trigger(struct snd_pcm_substream *subs, int cmd)
if (snd_pcm_stream_linked(subs)) {
struct snd_pcxhr *chip = snd_pcm_substream_chip(subs);
snd_pcm_group_for_each_entry(s, subs) {
if (snd_pcm_substream_chip(s) != chip)
continue;
stream = s->runtime->private_data;
stream->status =
PCXHR_STREAM_STATUS_SCHEDULE_RUN;