[PATCH] x86-64: Fix C3 timer test
There was a typo in the C3 latency test to decide of the TSC should be used or not. It used the C2 latency threshold, not the C3 one. Fix that. This should fix the time on various dual core laptops. Signed-off-by: Andi Kleen <ak@suse.de>
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@@ -948,7 +948,7 @@ __cpuinit int unsynchronized_tsc(void)
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if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) {
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#ifdef CONFIG_ACPI
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/* But TSC doesn't tick in C3 so don't use it there */
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if (acpi_fadt.length > 0 && acpi_fadt.plvl3_lat < 100)
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if (acpi_fadt.length > 0 && acpi_fadt.plvl3_lat < 1000)
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return 1;
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#endif
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return 0;
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