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Commit acf05f4b authored by Venkatesh Pallipadi's avatar Venkatesh Pallipadi Committed by Len Brown
Browse files

[ACPI] update /proc/acpi/processor/*/power even if only C1 support 



Signed-off-by: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 55e59c51

drivers/acpi/processor_idle.c

+26 −7
Original line number Diff line number Diff line
@@ -519,6 +519,29 @@ static int acpi_processor_get_power_info_fadt (struct acpi_processor *pr) 
}





static int acpi_processor_get_power_info_default_c1 (struct acpi_processor *pr)

{

	int i;



	ACPI_FUNCTION_TRACE("acpi_processor_get_power_info_default_c1");



	for (i = 0; i < ACPI_PROCESSOR_MAX_POWER; i++)

		memset(pr->power.states, 0, sizeof(struct acpi_processor_cx));



	/* if info is obtained from pblk/fadt, type equals state */

	pr->power.states[ACPI_STATE_C1].type = ACPI_STATE_C1;

	pr->power.states[ACPI_STATE_C2].type = ACPI_STATE_C2;

	pr->power.states[ACPI_STATE_C3].type = ACPI_STATE_C3;



	/* the C0 state only exists as a filler in our array,

	 * and all processors need to support C1 */

	pr->power.states[ACPI_STATE_C0].valid = 1;

	pr->power.states[ACPI_STATE_C1].valid = 1;



	return_VALUE(0);

}





static int acpi_processor_get_power_info_cst (struct acpi_processor *pr)

{

	acpi_status		status = 0;
@@ -787,10 +810,7 @@ static int acpi_processor_get_power_info ( 
	if ((result) || (acpi_processor_power_verify(pr) < 2)) {

		result = acpi_processor_get_power_info_fadt(pr);

		if (result)

			return_VALUE(result);



		if (acpi_processor_power_verify(pr) < 2)

			return_VALUE(-ENODEV);

			result = acpi_processor_get_power_info_default_c1(pr);

	}



	/*
@@ -810,12 +830,11 @@ static int acpi_processor_get_power_info ( 
	 * CPU as being "idle manageable"

	 */

	for (i = 1; i < ACPI_PROCESSOR_MAX_POWER; i++) {

		if (pr->power.states[i].valid)

		if (pr->power.states[i].valid) {

			pr->power.count = i;

		if ((pr->power.states[i].valid) &&

		    (pr->power.states[i].type >= ACPI_STATE_C2))

			pr->flags.power = 1;

		}

	}



	return_VALUE(0);

}