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Commit 59a3b3a8 authored by Akshu Agrawal's avatar Akshu Agrawal Committed by Rafael J. Wysocki
Browse files

cpufreq: AMD: Ignore the check for ProcFeedback in ST/CZ 



In ST/CZ CPUID 8000_0007_EDX[11, ProcFeedbackInterface] is 0,
but the mechanism is still available and can be used.

Signed-off-by: default avatarAkshu Agrawal <akshu.agrawal@amd.com>
Acked-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 703cbaa6

drivers/cpufreq/amd_freq_sensitivity.c

+9 −2
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ 
#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/types.h>

#include <linux/pci.h>

#include <linux/percpu-defs.h>

#include <linux/init.h>

#include <linux/mod_devicetable.h>
@@ -109,12 +110,18 @@ static unsigned int amd_powersave_bias_target(struct cpufreq_policy *policy, 
static int __init amd_freq_sensitivity_init(void)

{

	u64 val;

	struct pci_dev *pcidev;



	if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD)

		return -ENODEV;



	pcidev = pci_get_device(PCI_VENDOR_ID_AMD,

			PCI_DEVICE_ID_AMD_KERNCZ_SMBUS, NULL);



	if (!pcidev) {

		if (!static_cpu_has(X86_FEATURE_PROC_FEEDBACK))

			return -ENODEV;

	}



	if (rdmsrl_safe(MSR_AMD64_FREQ_SENSITIVITY_ACTUAL, &val))

		return -ENODEV;