usb_control_msg
return (usb_control_msg(udev, ep | USB_ENDPOINT_IN,
return (usb_control_msg(udev, USB_ENDPOINT_IN, USB_REQ_GET_DESCRIPTOR,
int usb_control_msg(usb_dev_handle * dev, int requesttype, int request, int value, int index, char *bytes, int size, int timeout);