AUE_N_TRANSFER
static const struct usb_config aue_config[AUE_N_TRANSFER] = {
sc->sc_xfer, aue_config, AUE_N_TRANSFER,
usbd_transfer_unsetup(sc->sc_xfer, AUE_N_TRANSFER);
struct usb_xfer *sc_xfer[AUE_N_TRANSFER];