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Commit a4932299 authored by Alex Chiang's avatar Alex Chiang Committed by Len Brown
Browse files

ACPI: processor: only evaluate _PDC once per processor 



If we evaluate _PDC in the early path, we do not want to evaluate
it again when the processor driver is loaded.

Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: default avatarAlex Chiang <achiang@hp.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 0406ad33

drivers/acpi/processor_pdc.c

+7 −0
Original line number Diff line number Diff line
@@ -125,6 +125,8 @@ acpi_processor_eval_pdc(acpi_handle handle, struct acpi_object_list *pdc_in) 
	return status;

}



static int early_pdc_done;



void acpi_processor_set_pdc(acpi_handle handle)

{

	struct acpi_object_list *obj_list;
@@ -132,6 +134,9 @@ void acpi_processor_set_pdc(acpi_handle handle) 
	if (arch_has_acpi_pdc() == false)

		return;



	if (early_pdc_done)

		return;



	obj_list = acpi_processor_alloc_pdc();

	if (!obj_list)

		return;
@@ -199,4 +204,6 @@ void __init acpi_early_processor_set_pdc(void) 
	acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT,

			    ACPI_UINT32_MAX,

			    early_init_pdc, NULL, NULL, NULL);



	early_pdc_done = 1;

}