Use EfiEventGroupSignal from UefiLib and remove
EmptyCallbackFunction.

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=298

Cc: Leif Lindholm <leif.lindh...@linaro.org>
Cc: Ard Biesheuvel <ard.biesheu...@linaro.org>
Cc: Liming Gao <liming....@intel.com>
Cc: Michael Kinney <michael.d.kin...@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.z...@intel.com>
---
 .../Library/PlatformIntelBdsLib/IntelBdsPlatform.c | 36 ++--------------------
 .../Library/PlatformIntelBdsLib/IntelBdsPlatform.h |  3 +-
 .../PlatformIntelBdsLib/PlatformIntelBdsLib.inf    |  3 +-
 3 files changed, 6 insertions(+), 36 deletions(-)

diff --git a/ArmPlatformPkg/Library/PlatformIntelBdsLib/IntelBdsPlatform.c 
b/ArmPlatformPkg/Library/PlatformIntelBdsLib/IntelBdsPlatform.c
index ceb4f076e2a6..885866854329 100644
--- a/ArmPlatformPkg/Library/PlatformIntelBdsLib/IntelBdsPlatform.c
+++ b/ArmPlatformPkg/Library/PlatformIntelBdsLib/IntelBdsPlatform.c
@@ -1,6 +1,6 @@
 /** @file
 
-Copyright (c) 2004 - 2008, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2004 - 2017, Intel Corporation. All rights reserved.<BR>
 Copyright (c) 2014, ARM Ltd. All rights reserved.<BR>
 
 This program and the accompanying materials
@@ -31,24 +31,6 @@ PlatformIntelBdsConstructor (
   return EFI_SUCCESS;
 }
 
-/**
-  An empty function to pass error checking of CreateEventEx ().
-
-  @param  Event                 Event whose notification function is being 
invoked.
-  @param  Context               Pointer to the notification function's context,
-                                which is implementation-dependent.
-
-**/
-STATIC
-VOID
-EFIAPI
-EmptyCallbackFunction (
-  IN EFI_EVENT                Event,
-  IN VOID                     *Context
-  )
-{
-}
-
 //
 // BDS Platform Functions
 //
@@ -63,24 +45,10 @@ PlatformBdsInit (
   VOID
   )
 {
-  EFI_EVENT           EndOfDxeEvent;
-  EFI_STATUS          Status;
-
   //
   // Signal EndOfDxe PI Event
   //
-  Status = gBS->CreateEventEx (
-                  EVT_NOTIFY_SIGNAL,
-                  TPL_CALLBACK,
-                  EmptyCallbackFunction,
-                  NULL,
-                  &gEfiEndOfDxeEventGroupGuid,
-                  &EndOfDxeEvent
-                  );
-  if (!EFI_ERROR (Status)) {
-    gBS->SignalEvent (EndOfDxeEvent);
-    gBS->CloseEvent (EndOfDxeEvent);
-  }
+  EfiEventGroupSignal (&gEfiEndOfDxeEventGroupGuid);
 }
 
 STATIC
diff --git a/ArmPlatformPkg/Library/PlatformIntelBdsLib/IntelBdsPlatform.h 
b/ArmPlatformPkg/Library/PlatformIntelBdsLib/IntelBdsPlatform.h
index da428288fb9f..1329c54a1c3a 100644
--- a/ArmPlatformPkg/Library/PlatformIntelBdsLib/IntelBdsPlatform.h
+++ b/ArmPlatformPkg/Library/PlatformIntelBdsLib/IntelBdsPlatform.h
@@ -1,7 +1,7 @@
 /** @file
   Head file for BDS Platform specific code
 
-Copyright (c) 2004 - 2008, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2004 - 2017, 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
@@ -28,6 +28,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER 
EXPRESS OR IMPLIED.
 #include <Library/PcdLib.h>
 #include <Library/GenericBdsLib.h>
 #include <Library/PlatformBdsLib.h>
+#include <Library/UefiLib.h>
 
 #include <Guid/GlobalVariable.h>
 #include <Guid/EventGroup.h>
diff --git a/ArmPlatformPkg/Library/PlatformIntelBdsLib/PlatformIntelBdsLib.inf 
b/ArmPlatformPkg/Library/PlatformIntelBdsLib/PlatformIntelBdsLib.inf
index daa0d91a2f76..a27adacbc1c2 100644
--- a/ArmPlatformPkg/Library/PlatformIntelBdsLib/PlatformIntelBdsLib.inf
+++ b/ArmPlatformPkg/Library/PlatformIntelBdsLib/PlatformIntelBdsLib.inf
@@ -2,7 +2,7 @@
 #  Implementation for PlatformBdsLib library class interfaces.
 #  using ARM Platform framework.
 #
-#  Copyright (c) 2007 - 2014, Intel Corporation. All rights reserved.<BR>
+#  Copyright (c) 2007 - 2017, Intel Corporation. All rights reserved.<BR>
 #  Copyright (c) 2014, ARM Ltd. All rights reserved.<BR>
 #
 #  This program and the accompanying materials
@@ -50,6 +50,7 @@ [LibraryClasses]
   UefiBootServicesTableLib
   PcdLib
   GenericBdsLib
+  UefiLib
 
 [Guids]
   gEfiEndOfDxeEventGroupGuid
-- 
2.7.0.windows.1

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