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Commit 519efbc0 authored by Andreas Herrmann3's avatar Andreas Herrmann3 Committed by Ingo Molnar
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x86: fix cpu MHz reporting for AMD family 0x11 



Fix cpu MHz reporting for AMD family 0x11 when powernow-k8 is
disabled.

Just adhere to the CONSTANT_TSC feature bit for AMD CPUs when deciding
whether cpu_khz needs calibration. The additional check for CPU family
is not needed and prevents calibration for future CPUs.

Signed-off-by: default avatarAndreas Herrmann <andreas.herrmann3@amd.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent cd7d72bb

arch/x86/kernel/time_64.c

+1 −2
Original line number Diff line number Diff line
@@ -120,8 +120,7 @@ void __init time_init(void) 


	cpu_khz = tsc_khz;

	if (cpu_has(&boot_cpu_data, X86_FEATURE_CONSTANT_TSC) &&

		boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&

		boot_cpu_data.x86 == 16)

		(boot_cpu_data.x86_vendor == X86_VENDOR_AMD))

		cpu_khz = calculate_cpu_khz();



	if (unsynchronized_tsc())