ALSA: hda - Add sanity check in PCM open callback



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>

parent 70d321e6

sound/pci/hda/hda_intel.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -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;
		}