UAUDIO_HID_HAS_VOLUME_UP
if ((sc->sc_hid.flags & UAUDIO_HID_HAS_VOLUME_UP) &&
sc->sc_hid.flags |= UAUDIO_HID_HAS_VOLUME_UP;
if (!(sc->sc_hid.flags & (UAUDIO_HID_HAS_VOLUME_UP |