ZYD_N_TRANSFER
static const struct usb_config zyd_config[ZYD_N_TRANSFER] = {
ZYD_N_TRANSFER, sc, &sc->sc_mtx);
for (x = 0; x != ZYD_N_TRANSFER; x++)
usbd_transfer_unsetup(sc->sc_xfer, ZYD_N_TRANSFER);
struct usb_xfer *sc_xfer[ZYD_N_TRANSFER];