ACPI / cpuidle: fix deadlock between cpuidle_lock and cpu_hotplug.lock

[pandora-kernel.git] / drivers / acpi / processor_idle.c

diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index de0791c..388ba10 100644 (file)
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -1165,9 +1165,9 @@ int acpi_processor_cst_has_changed(struct acpi_processor *pr)
        if (smp_processor_id() == 0 &&
                        cpuidle_get_driver() == &acpi_idle_driver) {
 
-               cpuidle_pause_and_lock();
                /* Protect against cpu-hotplug */
                get_online_cpus();
+               cpuidle_pause_and_lock();
 
                /* Disable all cpuidle devices */
                for_each_online_cpu(cpu) {
@@ -1192,8 +1192,8 @@ int acpi_processor_cst_has_changed(struct acpi_processor *pr)
                                cpuidle_enable_device(&_pr->power.dev);
                        }
                }
-               put_online_cpus();
                cpuidle_resume_and_unlock();
+               put_online_cpus();
        }
 
        return 0;