SNDRV_RAWMIDI_IOCTL_DRAIN 774 sound/core/rawmidi.c case SNDRV_RAWMIDI_IOCTL_DRAIN: SNDRV_RAWMIDI_IOCTL_DRAIN 112 sound/core/rawmidi_compat.c case SNDRV_RAWMIDI_IOCTL_DRAIN: