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>
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index b36dc46..1877d95 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -1464,6 +1464,12 @@
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;
}