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Merge tag 'acpi-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

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Pull ACPI fix from Rafael Wysocki:
 "Fix more fallout from recent changes of the ACPI CPPC handling on AMD
  platforms (Mario Limonciello)"

* tag 'acpi-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: CPPC: Fix enabling CPPC on AMD systems with shared memory
This commit is contained in:
Linus Torvalds
2022-07-16 10:52:41 -07:00
parent be9b7b6acf fbd74d1689
commit 16c957f089
1 changed files with 6 additions and 0 deletions
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6
arch/x86/kernel/acpi/cppc.c
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@@ -16,6 +16,12 @@ bool cpc_supported_by_cpu(void)
switch (boot_cpu_data.x86_vendor) {
case X86_VENDOR_AMD:
case X86_VENDOR_HYGON:
if (boot_cpu_data.x86 == 0x19 && ((boot_cpu_data.x86_model <= 0x0f) ||
(boot_cpu_data.x86_model >= 0x20 && boot_cpu_data.x86_model <= 0x2f)))
return true;
else if (boot_cpu_data.x86 == 0x17 &&
boot_cpu_data.x86_model >= 0x70 && boot_cpu_data.x86_model <= 0x7f)
return true;
return boot_cpu_has(X86_FEATURE_CPPC);
}
return false;