ACPI: CPPC: Check present CPUs for determining _CPC is valid

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As this is a static check, it should be based upon what is currently
present on the system. This makes probeing more deterministic.

While local APIC flags field (lapic_flags) of cpu core in MADT table is
0, then the cpu core won't be enabled. In this case, _CPC won't be found
in this core, and return back to _CPC invalid with walking through
possible cpus (include disable cpus). This is not expected, so switch to
check present CPUs instead.

Reported-by: Jinzhou Su <Jinzhou.Su@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

...

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Mario Limonciello 2021-12-24 09:04:58 +08:00 • committed by Rafael J. Wysocki

parent a2c8f92bea

commit 2aeca6bd02

1 changed files with 1 additions and 1 deletions

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drivers/acpi/cppc_acpi.c

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