x86: quick TSC calibration, improve
- make sure the final TSC timestamp is reliable too Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -316,6 +316,12 @@ static unsigned long quick_pit_calibrate(void)
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}
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t2 = get_cycles();
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/*
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* Make sure we can rely on the second TSC timestamp:
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*/
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if (!pit_expect_msb(--expect))
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goto failed;
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/*
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* Ok, if we get here, then we've seen the
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* MSB of the PIT decrement QUICK_PIT_ITERATIONS
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