SNDRV_PCM_IOCTL_HW_FREE  496 sound/core/pcm_compat.c 	case SNDRV_PCM_IOCTL_HW_FREE:
SNDRV_PCM_IOCTL_HW_FREE 2514 sound/core/pcm_native.c 	case SNDRV_PCM_IOCTL_HW_FREE: