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pcm: dmix: Return error when slave is in OPEN or DISCONNECTED

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A slave PCM in OPEN or DISCONNECTED state can't be used properly at
all, so the best option is to return -EBADFD error.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2016-05-31 12:48:40 +02:00
parent 8feb96ed9b
commit 614ce73d3d
1 changed files with 3 additions and 1 deletions
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4
src/pcm/pcm_direct.c
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@ -822,12 +822,14 @@ int snd_pcm_direct_prepare(snd_pcm_t *pcm)
case SND_PCM_STATE_SETUP:
case SND_PCM_STATE_XRUN:
case SND_PCM_STATE_SUSPENDED:
case SND_PCM_STATE_DISCONNECTED:
err = snd_pcm_prepare(dmix->spcm);
if (err < 0)
return err;
snd_pcm_start(dmix->spcm);
break;
case SND_PCM_STATE_OPEN:
case SND_PCM_STATE_DISCONNECTED:
return -EBADFD;
}
snd_pcm_direct_check_interleave(dmix, pcm);
dmix->state = SND_PCM_STATE_PREPARED;