Support unhook notification function for Smst->SmmRegisterProtocolNotify() per PI specification.

Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14823 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 3 insertions, 1 deletions

diff --git a/MdePkg/Include/Pi/PiSmmCis.h b/MdePkg/Include/Pi/PiSmmCis.h
index 29e5e90675..06d335bfff 100644
--- a/MdePkg/Include/Pi/PiSmmCis.h
+++ b/MdePkg/Include/Pi/PiSmmCis.h
@@ -2,7 +2,7 @@
   Common definitions in the Platform Initialization Specification version 1.2

   VOLUME 4 System Management Mode Core Interface version.

 

-  Copyright (c) 2009 - 2012, Intel Corporation. All rights reserved.<BR>

+  Copyright (c) 2009 - 2013, Intel Corporation. All rights reserved.<BR>

   This program and the accompanying materials

   are licensed and made available under the terms and conditions of the BSD License

   which accompanies this distribution.  The full text of the license may be found at

@@ -106,6 +106,7 @@ EFI_STATUS
   The SmmRegisterProtocolNotify() function creates a registration Function that is to be 

   called whenever a protocol interface is installed for Protocol by 

   SmmInstallProtocolInterface().

+  If Function == NULL and Registration is an existing registration, then the callback is unhooked.

 

   @param[in]  Protocol          The unique ID of the protocol for which the event is to be registered.

   @param[in]  Function          Points to the notification function.

@@ -114,6 +115,7 @@ EFI_STATUS
   @retval EFI_SUCCESS           Successfully returned the registration record that has been added.

   @retval EFI_INVALID_PARAMETER One or more of Protocol, Function and Registration is NULL.

   @retval EFI_OUT_OF_RESOURCES  Not enough memory resource to finish the request.

+  @retval EFI_NOT_FOUND         If the registration is not found when Function == NULL.

 **/

 typedef

 EFI_STATUS