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Fix the sound driver vchan support to work when hw.snd.maxautovchans

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has been specified through /boot/loader.conf as opposed to setting it
in /etc/sysctl.conf. Only PCMDIR_PLAY channel can be used as a parent
of virtual channel. Do not initialize a new vchan for a given physical
channel if other physical channel already has one created.

PR:	31597
Approved by:	obrien (mentor)
This commit is contained in:
Alexander Kabaev 2002-07-23 14:50:51 +00:00
parent 58a8e6d20e
commit 61698e0ca1
1 changed files with 2 additions and 1 deletions
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3
sys/dev/sound/pcm/sound.c
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@ -504,7 +504,8 @@ pcm_addchan(device_t dev, int dir, kobj_class_t cls, void *devinfo)
return err;
}
if (snd_maxautovchans > 0 && (d->flags & SD_F_AUTOVCHAN)) {
if (snd_maxautovchans > 0 && (d->flags & SD_F_AUTOVCHAN) &&
ch->direction == PCMDIR_PLAY && d->vchancount == 0) {
ch->flags |= CHN_F_BUSY;
err = vchan_create(ch);
if (err) {