+ //\r
+ // Make sure this driver is currently managing ControllerHandle\r
+ //\r
+ Status = EfiTestManagedDevice (\r
+ ControllerHandle,\r
+ gWinNtBlockIoDriverBinding.DriverBindingHandle,\r
+ &gEfiWinNtIoProtocolGuid\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ return EFI_UNSUPPORTED;\r
+ }\r