From 5117b83be8d73a9c5d15b236e57e4d194d1d9428 Mon Sep 17 00:00:00 2001
From: vanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Wed, 13 Sep 2006 01:10:51 +0000
Subject: update GetPerformanceCounterProperties() declare

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1518 6f19259b-4bc3-4df7-8a09-765794883524
---
 MdePkg/Library/BaseTimerLibLocalApic/Ipf/IpfTimerLib.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'MdePkg/Library/BaseTimerLibLocalApic/Ipf')

diff --git a/MdePkg/Library/BaseTimerLibLocalApic/Ipf/IpfTimerLib.c b/MdePkg/Library/BaseTimerLibLocalApic/Ipf/IpfTimerLib.c
index 800b5258e3..12803d9fa4 100644
--- a/MdePkg/Library/BaseTimerLibLocalApic/Ipf/IpfTimerLib.c
+++ b/MdePkg/Library/BaseTimerLibLocalApic/Ipf/IpfTimerLib.c
@@ -188,8 +188,8 @@ GetPerformanceCounter (
 UINT64
 EFIAPI
 GetPerformanceCounterProperties (
-  IN      UINT64                    *StartValue,
-  IN      UINT64                    *EndValue
+  OUT      UINT64                    *StartValue,  OPTIONAL
+  OUT      UINT64                    *EndValue     OPTIONAL
   )
 {
   PAL_PROC_RETURN                   PalRet;
-- 
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