add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/cpufreq/amd_freq_sensitivity.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * amd_freq_sensitivity.c: AMD frequency sensitivity feedback powersave bias
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  *                         for the ondemand governor.
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@@ -5,10 +6,6 @@
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  * Copyright (C) 2013 Advanced Micro Devices, Inc.
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  *
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  * Author: Jacob Shin <jacob.shin@amd.com>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  */
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 #include <linux/kernel.h>
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@@ -21,6 +18,7 @@
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 #include <asm/msr.h>
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 #include <asm/cpufeature.h>
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+#include <asm/cpu_device_id.h>
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 #include "cpufreq_ondemand.h"
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@@ -111,16 +109,23 @@
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 {
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 	u64 val;
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 	struct pci_dev *pcidev;
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+	unsigned int pci_vendor;
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-	if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD)
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+	if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD)
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+		pci_vendor = PCI_VENDOR_ID_AMD;
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+	else if (boot_cpu_data.x86_vendor == X86_VENDOR_HYGON)
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+		pci_vendor = PCI_VENDOR_ID_HYGON;
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+	else
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 		return -ENODEV;
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-	pcidev = pci_get_device(PCI_VENDOR_ID_AMD,
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+	pcidev = pci_get_device(pci_vendor,
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 			PCI_DEVICE_ID_AMD_KERNCZ_SMBUS, NULL);
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 	if (!pcidev) {
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-		if (!static_cpu_has(X86_FEATURE_PROC_FEEDBACK))
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+		if (!boot_cpu_has(X86_FEATURE_PROC_FEEDBACK))
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 			return -ENODEV;
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+	} else {
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+		pci_dev_put(pcidev);
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 	}
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 	if (rdmsrl_safe(MSR_AMD64_FREQ_SENSITIVITY_ACTUAL, &val))
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@@ -141,8 +146,8 @@
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 }
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 module_exit(amd_freq_sensitivity_exit);
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-static const struct x86_cpu_id amd_freq_sensitivity_ids[] = {
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-	X86_FEATURE_MATCH(X86_FEATURE_PROC_FEEDBACK),
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+static const struct x86_cpu_id __maybe_unused amd_freq_sensitivity_ids[] = {
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+	X86_MATCH_FEATURE(X86_FEATURE_PROC_FEEDBACK, NULL),
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 	{}
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 };
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 MODULE_DEVICE_TABLE(x86cpu, amd_freq_sensitivity_ids);