diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-07-31 12:38:04 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-31 12:38:04 +0200 |
| commit | 5fbf24659b75356e2142e1f1b88f67b34cbc3e75 (patch) | |
| tree | 0e470e4cc89b72e3d74939f8c39396a6a0bebb3a /drivers/acpi/processor_idle.c | |
| parent | d89961e2dc87b6e30b8e3f60bd2af5cd92cf4643 (diff) | |
| parent | 6e86841d05f371b5b9b86ce76c02aaee83352298 (diff) | |
Merge branch 'linus' into x86/xen
Diffstat (limited to 'drivers/acpi/processor_idle.c')
| -rw-r--r-- | drivers/acpi/processor_idle.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index b7f2963693a..283c08f5f4d 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -1332,9 +1332,15 @@ int acpi_processor_cst_has_changed(struct acpi_processor *pr) if (!pr->flags.power_setup_done) return -ENODEV; - /* Fall back to the default idle loop */ - pm_idle = pm_idle_save; - synchronize_sched(); /* Relies on interrupts forcing exit from idle. */ + /* + * Fall back to the default idle loop, when pm_idle_save had + * been initialized. + */ + if (pm_idle_save) { + pm_idle = pm_idle_save; + /* Relies on interrupts forcing exit from idle. */ + synchronize_sched(); + } pr->flags.power = 0; result = acpi_processor_get_power_info(pr); @@ -1896,7 +1902,8 @@ int acpi_processor_power_exit(struct acpi_processor *pr, /* Unregister the idle handler when processor #0 is removed. */ if (pr->id == 0) { - pm_idle = pm_idle_save; + if (pm_idle_save) + pm_idle = pm_idle_save; /* * We are about to unload the current idle thread pm callback |