Kernel should decrements the reference count of acpi device
when the scheduling of acpi hotplug work is failed, and
evaluates _OST to notify BIOS the failure.
v2:
To simplify the code. (Andy Shevchenko)
Cc: "Rafael J. Wysocki" <rjw@xxxxxxxxxxxxx>
Cc: Len Brown <lenb@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxx>
Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
Signed-off-by: "Lee, Chun-Yi" <jlee@xxxxxxxx>
---
drivers/acpi/bus.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 34fbe02..91adb71 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -427,12 +427,17 @@ 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)))
- return;
+ if (hotplug_event) {
+ if (ACPI_SUCCESS(acpi_hotplug_schedule(adev, type)))
+ return;
+ goto err_put_device;
+ }
acpi_bus_put_acpi_device(adev);
return;
+ err_put_device:
+ acpi_bus_put_acpi_device(adev);
err:
acpi_evaluate_ost(handle, type, ost_code, NULL);
}
--
2.10.2
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