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| author | Len Brown <len.brown@intel.com> | 2005-12-05 17:08:40 -0500 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2005-12-05 17:08:40 -0500 |
| commit | 927fe18397b3b1194a5b26b1d388d97e391e5fd2 (patch) | |
| tree | f04da374e2f38adf85dd26a6accb73d95a90c912 /drivers | |
| parent | e4f5c82a92c2a546a16af1614114eec19120e40a (diff) | |
| parent | 1e483969930a82e16767884449f3a121a817ef00 (diff) | |
| download | linux-927fe18397b3b1194a5b26b1d388d97e391e5fd2.tar.gz linux-927fe18397b3b1194a5b26b1d388d97e391e5fd2.tar.bz2 linux-927fe18397b3b1194a5b26b1d388d97e391e5fd2.zip | |
Pull 5165 into release branch
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/acpi/processor_idle.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 5f51057518b0..807b0df308f1 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -274,8 +274,6 @@ static void acpi_processor_idle(void) } } - cx->usage++; - #ifdef CONFIG_HOTPLUG_CPU /* * Check for P_LVL2_UP flag before entering C2 and above on @@ -283,9 +281,12 @@ static void acpi_processor_idle(void) * detection phase, to work cleanly with logical CPU hotplug. */ if ((cx->type != ACPI_STATE_C1) && (num_online_cpus() > 1) && - !pr->flags.has_cst && acpi_fadt.plvl2_up) - cx->type = ACPI_STATE_C1; + !pr->flags.has_cst && !acpi_fadt.plvl2_up) + cx = &pr->power.states[ACPI_STATE_C1]; #endif + + cx->usage++; + /* * Sleep: * ------ @@ -386,6 +387,15 @@ static void acpi_processor_idle(void) next_state = pr->power.state; +#ifdef CONFIG_HOTPLUG_CPU + /* Don't do promotion/demotion */ + if ((cx->type == ACPI_STATE_C1) && (num_online_cpus() > 1) && + !pr->flags.has_cst && !acpi_fadt.plvl2_up) { + next_state = cx; + goto end; + } +#endif + /* * Promotion? * ---------- @@ -557,7 +567,7 @@ static int acpi_processor_get_power_info_fadt(struct acpi_processor *pr) * Check for P_LVL2_UP flag before entering C2 and above on * an SMP system. */ - if ((num_online_cpus() > 1) && acpi_fadt.plvl2_up) + if ((num_online_cpus() > 1) && !acpi_fadt.plvl2_up) return_VALUE(-ENODEV); #endif |