Revision: 17848
http://sourceforge.net/p/edk2/code/17848
Author: niruiyu
Date: 2015-07-07 05:41:43 +0000 (Tue, 07 Jul 2015)
Log Message:
-----------
PcRtc: Fix PcRtcInit() to not clear RegisterB Hour Format bit (BIT1) sometimes
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <[email protected]>
Reviewed-by: Feng Tian <[email protected]>
Modified Paths:
--------------
trunk/edk2/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c
Modified: trunk/edk2/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c
===================================================================
--- trunk/edk2/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c
2015-07-07 04:37:07 UTC (rev 17847)
+++ trunk/edk2/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c
2015-07-07 05:41:43 UTC (rev 17848)
@@ -166,7 +166,8 @@
// Set RTC configuration after get original time
// The value of bit AIE should be reserved.
//
- RtcWrite (RTC_ADDRESS_REGISTER_B, (UINT8)(RTC_INIT_REGISTER_B |
(RegisterB.Data & BIT5)));
+ RegisterB.Data = RTC_INIT_REGISTER_B | (RegisterB.Data & BIT5);
+ RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);
//
// Release RTC Lock.
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