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intel_cstates: Fix integer division inaccuracy

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Integer division could have result in an out of bound substate.
This commit is contained in:
Pawel Dziepak 2014-01-21 04:18:20 +01:00
parent d01fa1ffe3
commit ae81c98aaf
1 changed files with 2 additions and 1 deletions
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src/add-ons/kernel/power/cpuidle/intel_cstates/intel_cstates.cpp
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@ -83,7 +83,8 @@ cstates_idle(void)
ASSERT(state >= 0 && state < sCStateCount); ASSERT(state >= 0 && state < sCStateCount);
int subState = idleTime % timeStep; int subState = idleTime % timeStep;
subState /= timeStep / sCStates[state].fSubStatesCount; subState *= sCStates[state].fSubStatesCount;
subState /= timeStep;
ASSERT(subState >= 0 && subState < sCStates[state].fSubStatesCount); ASSERT(subState >= 0 && subState < sCStates[state].fSubStatesCount);