Intel Extensible Firmware Interface - Manual (Page 156)

Extensible Firmware Interface Specification
5-58 12/01/02 Version 1.10
Examples
EFI_BOOT_SERVICES_TABLE *gBS;
EFI_HANDLE ImageHandle;
EFI_DRIVER_BINDING_PROTOCOL *This;
IN EFI_HANDLE ControllerHandle,
extern EFI_GUID gEfiXyzIoProtocol;
EFI_STATUS Status;
//
// Close the XYZ I/O Protocol that was opened on behalf of ControllerHandle
//
Status = gBS->CloseProtocol (
ControllerHandle,
&gEfiXyzIoProtocol,
This->DriverBindingHandle,
ControllerHandle
);
//
// Close the XYZ I/O Protocol that was opened with BY_HANDLE_PROTOCOL
//
Status = gBS->CloseProtocol (
ControllerHandle,
&gEfiXyzIoProtocol,
ImageHandle,
NULL
);