update GetPerformanceCounterProperties() declare

[mirror_edk2.git] / MdePkg / Include / Library / TimerLib.h

diff --git a/MdePkg/Include/Library/TimerLib.h b/MdePkg/Include/Library/TimerLib.h
index 8523bd0dfbafbe4b02aba9b40d1bc9b8ad662bf9..8f31bbb5f32f5d7c9de0c2c34921a27546dc2f37 100644 (file)
--- a/MdePkg/Include/Library/TimerLib.h
+++ b/MdePkg/Include/Library/TimerLib.h
@@ -93,8 +93,8 @@ GetPerformanceCounter (
 UINT64\r
 EFIAPI\r
 GetPerformanceCounterProperties (\r
-  IN      UINT64                    *StartValue,  OPTIONAL\r
-  IN      UINT64                    *EndValue     OPTIONAL\r
+  OUT      UINT64                    *StartValue,  OPTIONAL\r
+  OUT      UINT64                    *EndValue     OPTIONAL\r
   );\r
 \r
 #endif\r