Symbol: CTL_VOLUME_MONO
usr/src/uts/common/io/usb/clients/audio/usb_ac/usb_ac.c
5050
case CTL_VOLUME_MONO:
usr/src/uts/common/io/usb/clients/audio/usb_ac/usb_ac.c
5189
(void) usb_audio_ctrl_alloc(statep, CTL_VOLUME_MONO,