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ACPI / bus: handle ACPI hotplug schedule errors completely 

Kernel should decrements the reference count of ACPI device
when the scheduling of ACPI hotplug work failed, and evaluates
_OST to notify BIOS the failure.

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: "Lee, Chun-Yi" <jlee@suse.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Lee, Chun-Yi 2017-06-30 15:25:38 +08:00 committed by Rafael J. Wysocki
parent 6f7da29041
commit 9a4d8d60df
1 changed files with 6 additions and 2 deletions
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8
drivers/acpi/bus.c
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@ -432,11 +432,15 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
(driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS))
driver->ops.notify(adev, type);
if (hotplug_event && ACPI_SUCCESS(acpi_hotplug_schedule(adev, type)))
if (!hotplug_event) {
acpi_bus_put_acpi_device(adev);
return;
}
if (ACPI_SUCCESS(acpi_hotplug_schedule(adev, type)))
return;
acpi_bus_put_acpi_device(adev);
return;
err:
acpi_evaluate_ost(handle, type, ost_code, NULL);