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CPUFREQ: Enable acpi-cpufreq driver for VIA/Centaur CPUs 

The VIA/Centaur C7, C7-M and Nano CPU's all support ACPI based cpu p-states
using a MSR interface.  The Linux driver just never made use of it, since in
addition to the check for the EST flag it also checked if the vendor is Intel.

Signed-off-by: Harald Welte <HaraldWelte@viatech.com>
[ Removed the vendor checks entirely  - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
hifive-unleashed-5.1
Harald Welte 2009-06-08 18:27:54 +08:00 committed by Linus Torvalds
parent 2b83868723
commit 0de51088e6
1 changed files with 1 additions and 5 deletions
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6
arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
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@ -90,11 +90,7 @@ static int check_est_cpu(unsigned int cpuid)
{
struct cpuinfo_x86 *cpu = &cpu_data(cpuid);
if (cpu->x86_vendor != X86_VENDOR_INTEL ||
!cpu_has(cpu, X86_FEATURE_EST))
return 0;
return 1;
return cpu_has(cpu, X86_FEATURE_EST);
}
static unsigned extract_io(u32 value, struct acpi_cpufreq_data *data)