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cpuidle: fix HP nx6125 regression

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Fix for http://bugzilla.kernel.org/show_bug.cgi?id=9355

cpuidle always used to fallback to C2 if there is some bm activity while
entering C3. But, presence of C2 is not always guaranteed. Change cpuidle
algorithm to detect a safe_state to fallback in case of bm_activity and
use that state instead of C2.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Venkatesh Pallipadi
2007-11-19 21:43:22 -05:00
committed by Len Brown
parent 5062911830
commit ddc081a195
3 changed files with 56 additions and 71 deletions
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include/acpi/processor.h
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@@ -78,7 +78,6 @@ struct acpi_processor_cx {
struct acpi_processor_power {
struct cpuidle_device dev;
struct acpi_processor_cx *state;
struct acpi_processor_cx *bm_state;
unsigned long bm_check_timestamp;
u32 default_state;
u32 bm_activity;