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ACPI fixes for 5.19-rc6

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- Prevent _CPC from being used if the platform firmware does not
    confirm CPPC v2 support via _OSC (Mario Limonciello).
 
  - Allow systems with X86_FEATURE_CPPC set to use _CPC even if CPPC
    support cannot be agreed on via _OSC (Mario Limonciello).
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Merge tag 'acpi-5.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fixes from Rafael Wysocki:
 "These fix two recent regressions related to CPPC support.

  Specifics:

   - Prevent _CPC from being used if the platform firmware does not
     confirm CPPC v2 support via _OSC (Mario Limonciello)

   - Allow systems with X86_FEATURE_CPPC set to use _CPC even if CPPC
     support cannot be agreed on via _OSC (Mario Limonciello)"

* tag 'acpi-5.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: CPPC: Don't require _OSC if X86_FEATURE_CPPC is supported
  ACPI: CPPC: Only probe for _CPC if CPPC v2 is acked
This commit is contained in:
Linus Torvalds 2022-07-08 13:05:56 -07:00
commit 525496a030
5 changed files with 35 additions and 9 deletions
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2
include/linux/acpi.h
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@ -584,7 +584,7 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context);
extern bool osc_sb_apei_support_acked;
extern bool osc_pc_lpi_support_confirmed;
extern bool osc_sb_native_usb4_support_confirmed;
extern bool osc_sb_cppc_not_supported;
extern bool osc_sb_cppc2_support_acked;
extern bool osc_cpc_flexible_adr_space_confirmed;
/* USB4 Capabilities */