mute_mixer_id 177 sound/usb/mixer_quirks.c u8 mute_mixer_id; mute_mixer_id 204 sound/usb/mixer_quirks.c snd_usb_mixer_notify_id(mixer, rc->mute_mixer_id); mute_mixer_id 2320 sound/usb/mixer_quirks.c snd_usb_mixer_notify_id(mixer, mixer->rc_cfg->mute_mixer_id);