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ALSA: hda - Add sanity check in PCM open callback

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Add some sanity checks of struct snd_pcm_hardware fields in the PCM
open callback of hda driver.  This makes a bit easier to debug any PCM
setup errors in the codec side.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2009-07-03 23:10:23 +02:00
parent 70d321e638
commit c470331e69
1 changed files with 6 additions and 0 deletions
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6
sound/pci/hda/hda_intel.c
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@ -1464,6 +1464,12 @@ static int azx_pcm_open(struct snd_pcm_substream *substream)
snd_pcm_set_sync(substream);
mutex_unlock(&chip->open_mutex);
if (snd_BUG_ON(!runtime->hw.channels_min || !runtime->hw.channels_max))
return -EINVAL;
if (snd_BUG_ON(!runtime->hw.formats))
return -EINVAL;
if (snd_BUG_ON(!runtime->hw.rates))
return -EINVAL;
return 0;
}