Function libusb_sys::libusb_control_transfer

pub unsafe extern "C" fn libusb_control_transfer(
    dev_handle: *mut libusb_device_handle, 
    request_type: u8, 
    request: u8, 
    value: u16, 
    index: u16, 
    data: *mut c_uchar, 
    length: u16, 
    timeout: c_uint
) -> c_int