USB_AUDIO_AC_MIXER_UNIT
case USB_AUDIO_AC_MIXER_UNIT:
if (mixer == 0 || mixer->SubType() != USB_AUDIO_AC_MIXER_UNIT)
if (control->SubType() == USB_AUDIO_AC_MIXER_UNIT) {
case USB_AUDIO_AC_MIXER_UNIT:
case USB_AUDIO_AC_MIXER_UNIT:
case USB_AUDIO_AC_MIXER_UNIT:
case USB_AUDIO_AC_MIXER_UNIT:
case USB_AUDIO_AC_MIXER_UNIT: