Symbol: CTL_REC_SRC
usr/src/uts/common/io/usb/clients/audio/usb_ac/usb_ac.c
5111
case CTL_REC_SRC:
usr/src/uts/common/io/usb/clients/audio/usb_ac/usb_ac.c
5214
(void) usb_audio_ctrl_alloc(statep, CTL_REC_SRC,