ACPI: processor: Export function to claim _CST control

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The intel_idle driver will be modified to use ACPI _CST subsequently
and it will need to notify the platform firmware of that if
acpi_gbl_FADT.cst_control is set, so add a routine for this purpose,
acpi_processor_claim_cst_control(), to acpi_processor.c (so that it
is always present which is required by intel_idle) and export it
to allow the ACPI processor driver (which is modular) to call it.

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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This commit is contained in:

Rafael J. Wysocki 2019-12-13 09:55:14 +01:00

parent d1eef1c619

commit bc94638886

3 changed files with 35 additions and 8 deletions

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25

drivers/acpi/acpi_processor.c

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12

drivers/acpi/processor_idle.c

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6

include/linux/acpi.h

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