usbd_get_endpoint
ep = usbd_get_endpoint(dev, uhe->bsd_iface_index, cfg);
ep = usbd_get_endpoint(udev, uaa->info.bIfaceIndex,
ep = usbd_get_endpoint(udev,
struct usb_endpoint *usbd_get_endpoint(struct usb_device *udev, uint8_t iface_index,