SNDRV_PCM_INVALID_DEVICE 3306 sound/pci/hda/hda_codec.c 			cpcm->device = SNDRV_PCM_INVALID_DEVICE;
SNDRV_PCM_INVALID_DEVICE 2227 sound/pci/hda/patch_hdmi.c 		if (dev != SNDRV_PCM_INVALID_DEVICE) {