diff options
author | Zhang Rui <rui.zhang@intel.com> | 2009-05-10 21:36:01 -0400 |
---|---|---|
committer | Len Brown <len.brown@intel.com> | 2009-05-15 23:21:54 -0400 |
commit | 4973b22aa8c70fe036e3e0039f104cf5bb7fe2b1 (patch) | |
tree | 7c3540560f5256dbcc76d7f8582bab0815ec3451 | |
parent | 56c213fa012f2bad9eff908292ff2500f840b020 (diff) |
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: Zhang Rui <rui.zhang@intel.com>
Tested-by: James Ettle <theholyettlz@googlemail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
-rw-r--r-- | drivers/acpi/processor_throttling.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c index 5f09fb8c0e0..7f16f5f8e7d 100644 --- a/drivers/acpi/processor_throttling.c +++ b/drivers/acpi/processor_throttling.c | |||
@@ -838,6 +838,14 @@ static int acpi_processor_get_throttling_ptc(struct acpi_processor *pr) | |||
838 | ret = acpi_read_throttling_status(pr, &value); | 838 | ret = acpi_read_throttling_status(pr, &value); |
839 | if (ret >= 0) { | 839 | if (ret >= 0) { |
840 | state = acpi_get_throttling_state(pr, value); | 840 | state = acpi_get_throttling_state(pr, value); |
841 | if (state == -1) { | ||
842 | ACPI_WARNING((AE_INFO, | ||
843 | "Invalid throttling state, reset\n")); | ||
844 | state = 0; | ||
845 | ret = acpi_processor_set_throttling(pr, state); | ||
846 | if (ret) | ||
847 | return ret; | ||
848 | } | ||
841 | pr->throttling.state = state; | 849 | pr->throttling.state = state; |
842 | } | 850 | } |
843 | 851 | ||