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Commit 4973b22a authored by Zhang Rui's avatar Zhang Rui Committed by Len Brown
Browse files

ACPI processor: reset the throttling state once it's invalid 

If the BIOS hands us an invalid throttling state,
write a valid state.

http://bugzilla.kernel.org/show_bug.cgi?id=13259



Signed-off-by: default avatarZhang Rui <rui.zhang@intel.com>
Tested-by: default avatarJames Ettle <theholyettlz@googlemail.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 56c213fa

drivers/acpi/processor_throttling.c

+8 −0
Original line number Original line Diff line number Diff line
@@ -838,6 +838,14 @@ static int acpi_processor_get_throttling_ptc(struct acpi_processor *pr) 
	ret = acpi_read_throttling_status(pr, &value);

	ret = acpi_read_throttling_status(pr, &value);

	if (ret >= 0) {

	if (ret >= 0) {

		state = acpi_get_throttling_state(pr, value);

		state = acpi_get_throttling_state(pr, value);

		if (state == -1) {

			ACPI_WARNING((AE_INFO,

				"Invalid throttling state, reset\n"));

			state = 0;

			ret = acpi_processor_set_throttling(pr, state);

			if (ret)

				return ret;

		}

		pr->throttling.state = state;

		pr->throttling.state = state;

	}

	}