diff options
Diffstat (limited to 'drivers/cpufreq/amd_freq_sensitivity.c')
| -rw-r--r-- | drivers/cpufreq/amd_freq_sensitivity.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/cpufreq/amd_freq_sensitivity.c b/drivers/cpufreq/amd_freq_sensitivity.c index 042023bbbf62..be926d9a66e5 100644 --- a/drivers/cpufreq/amd_freq_sensitivity.c +++ b/drivers/cpufreq/amd_freq_sensitivity.c @@ -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 @@ out: 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; - if (!static_cpu_has(X86_FEATURE_PROC_FEEDBACK)) - 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; |