mirror of https://github.com/acidanthera/audk.git
SourceLevelDebugPkg/DebugTimer: Fix the issue if CurrentTimer = Timer
If CPU runs fast and timer runs slow, two GetApicTimerCurrentCount() may return the same timer count value. We need to consider timer roll-over not happened. Otherwise, one false timeout flag will be set. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jeff Fan <jeff.fan@intel.com> Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18328 6f19259b-4bc3-4df7-8a09-765794883524
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@ -131,8 +131,10 @@ IsDebugTimerTimeout (
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//
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// This timer counter counts down. Check for roll over condition.
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// If CurrentTimer is equal to Timer, it does not mean that roll over
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// happened.
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//
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if (CurrentTimer < Timer) {
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if (CurrentTimer <= Timer) {
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Delta = Timer - CurrentTimer;
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} else {
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//
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