From 9191f52b1a816592589f7747501d6d9446204cb9 Mon Sep 17 00:00:00 2001
From: vanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Thu, 19 Jan 2012 06:41:20 +0000
Subject: Sync patch r12732 from main trunk. PcAtChipsetPkg: Do right sign
 extension to avoid a wrong daylight value saving into "RTC" variable.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/branches/UDK2010@12938 6f19259b-4bc3-4df7-8a09-765794883524
---
 PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c b/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c
index 4e676b1bad..2887c5df27 100644
--- a/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c
+++ b/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c
@@ -1,7 +1,7 @@
 /** @file
   RTC Architectural Protocol GUID as defined in DxeCis 0.96.
 
-Copyright (c) 2006 - 2007, Intel Corporation
+Copyright (c) 2006 - 2011, Intel Corporation
 All rights reserved. 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
@@ -414,7 +414,7 @@ PcRtcSetTime (
   Global->Daylight      = Time->Daylight;
 
   TimerVar = Time->Daylight;
-  TimerVar = (UINT32) ((TimerVar << 16) | Time->TimeZone);
+  TimerVar = (UINT32) ((TimerVar << 16) | (UINT16)(Time->TimeZone));
   Status =  EfiSetVariable (
               L"RTC",
               &gEfiCallerIdGuid,
-- 
cgit