SNDRV_PCM_IOCTL_HWSYNC  489 sound/core/pcm_compat.c 	case SNDRV_PCM_IOCTL_HWSYNC:
SNDRV_PCM_IOCTL_HWSYNC 2536 sound/core/pcm_native.c 	case SNDRV_PCM_IOCTL_HWSYNC: