SNDRV_RAWMIDI_IOCTL_DRAIN  664 include/uapi/sound/asound.h #define SNDRV_RAWMIDI_IOCTL_DRAIN	_IOW('W', 0x31, int)
SNDRV_RAWMIDI_IOCTL_DRAIN  664 tools/include/uapi/sound/asound.h #define SNDRV_RAWMIDI_IOCTL_DRAIN	_IOW('W', 0x31, int)