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path: root/MdePkg/Library/BaseTimerLibLocalApic/x86TimerLib.c
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Diffstat (limited to 'MdePkg/Library/BaseTimerLibLocalApic/x86TimerLib.c')
-rw-r--r--MdePkg/Library/BaseTimerLibLocalApic/x86TimerLib.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/MdePkg/Library/BaseTimerLibLocalApic/x86TimerLib.c b/MdePkg/Library/BaseTimerLibLocalApic/x86TimerLib.c
index dd240d88d0..09b614119d 100644
--- a/MdePkg/Library/BaseTimerLibLocalApic/x86TimerLib.c
+++ b/MdePkg/Library/BaseTimerLibLocalApic/x86TimerLib.c
@@ -239,8 +239,8 @@ GetPerformanceCounter (
UINT64
EFIAPI
GetPerformanceCounterProperties (
- IN UINT64 *StartValue,
- IN UINT64 *EndValue
+ OUT UINT64 *StartValue, OPTIONAL
+ OUT UINT64 *EndValue OPTIONAL
)
{
UINTN ApicBase;