ZYD_DEBUG_ANY
DPRINTF(sc, ZYD_DEBUG_ANY, "frame error: %s\n", usbd_errstr(error));
DPRINTF(sc, ZYD_DEBUG_ANY, "transfer complete, %u bytes\n",
DPRINTF(sc, ZYD_DEBUG_ANY, "data overflow, %u bytes\n",
DPRINTF(sc, ZYD_DEBUG_ANY, "transfer error, %s\n",
DPRINTF(sc, ZYD_DEBUG_ANY, "error = %s\n",