usb_audio_mixer_unit  196 dev/usb/uaudio.c 		const struct usb_audio_mixer_unit *mu;
usb_audio_mixer_unit  761 dev/usb/uaudio.c 	const struct usb_audio_mixer_unit *d = iot[id].d.mu;
usb_audio_mixer_unit  164 dev/usb/uaudioreg.h struct usb_audio_mixer_unit {