\r
@retval EFI_SUCCESS The controller has UDP service binding protocol\r
installed, MTFTP can support it.\r
- @retval Others MTFTP can't support the controller.\r
+ @retval EFI_ALREADY_STARTED The device specified by ControllerHandle and\r
+ RemainingDevicePath is already being managed by \r
+ the driver specified by This.\r
+ @retval EFI_ACCESS_DENIED The device specified by ControllerHandle and\r
+ RemainingDevicePath is already being managed by a \r
+ different driver or an application that requires \r
+ exclusive access.\r
+ @retval EFI_UNSUPPORTED The device specified by ControllerHandle and\r
+ RemainingDevicePath is not supported by the driver \r
+ specified by This.\r
\r
**/\r
EFI_STATUS\r