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ACPI / thermal: fix workqueue destroy order 

When the thermal module is to be removed, we should destroy the wq
acpi_thermal_pm_queue after the ACPI driver's remove callback is
executed as we will need to flush the workqueue there, or a NULL pointer
access will be hit.

Reported-and-tested-by: Kui Zhang <kuizhang@gmail.com>
References: http://www.spinics.net/lists/kernel/msg1747251.html
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Aaron Lu 2014-05-26 14:34:07 +02:00 committed by Rafael J. Wysocki
parent 4b660a7f5c
commit 2807bd18cc
1 changed files with 1 additions and 1 deletions
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2
drivers/acpi/thermal.c
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@ -1278,8 +1278,8 @@ static int __init acpi_thermal_init(void)
static void __exit acpi_thermal_exit(void)
{
destroy_workqueue(acpi_thermal_pm_queue);
acpi_bus_unregister_driver(&acpi_thermal_driver);
destroy_workqueue(acpi_thermal_pm_queue);
return;
}