snd_usb_create_mixer  657 sound/usb/card.c 		err = snd_usb_create_mixer(chip, ifnum, ignore_ctl_error);
snd_usb_create_mixer   97 sound/usb/mixer.h int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
snd_usb_create_mixer  508 sound/usb/quirks.c 	return snd_usb_create_mixer(chip, quirk->ifnum, 0);