[2/2] ACPI processor: reset the throttling state once it's invalid
diff mbox

Message ID 1242005761.15284.120.camel@rzhang-dt
State Accepted
Headers show

Commit Message

Zhang Rui May 11, 2009, 1:36 a.m. UTC
Reset the throttling state once we find that it's invalid.
http://bugzilla.kernel.org/show_bug.cgi?id=13259

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Tested-by: James Ettle <theholyettlz@googlemail.com>
---
 drivers/acpi/processor_throttling.c |    8 ++++++++
 1 file changed, 8 insertions(+)



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Comments

Len Brown May 16, 2009, 3:06 a.m. UTC | #1
applied

thanks,
Len Brown, Intel Open Source Technology Center

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Patch
diff mbox

Index: linux-2.6/drivers/acpi/processor_throttling.c
===================================================================
--- linux-2.6.orig/drivers/acpi/processor_throttling.c
+++ linux-2.6/drivers/acpi/processor_throttling.c
@@ -840,6 +840,14 @@  static int acpi_processor_get_throttling
 	ret = acpi_read_throttling_status(pr, &value);
 	if (ret >= 0) {
 		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;
 	}