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allow a null setdir implementation

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This commit is contained in:
Cameron Grant 2000-09-05 21:00:45 +00:00
parent c9b53085be
commit 85a6a5dce4
1 changed files with 1 additions and 1 deletions
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2
sys/dev/sound/pcm/channel.c
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@ -1179,7 +1179,7 @@ chn_setdir(pcm_channel *c, int dir)
int r;
c->direction = dir;
r = c->setdir(c->devinfo, c->direction);
r = c->setdir? c->setdir(c->devinfo, c->direction) : 0;
if (!r && ISA_DMA(&c->buffer))
c->buffer.dir = (dir == PCMDIR_PLAY)? ISADMA_WRITE : ISADMA_READ;
return r;