ACPI / PM: Assign the ->detach() callback when attaching the PM domain

As as preparation to simplify the detachment of devices from their PM
domains, we assign the ->detach() callback to genpd_dev_pm_detach().

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c
index 67075f800e34..eec5ed5be949 100644
--- a/drivers/acpi/device_pm.c
+++ b/drivers/acpi/device_pm.c
@@ -1072,6 +1072,8 @@ int acpi_dev_pm_attach(struct device *dev, bool power_on)
                 acpi_dev_pm_full_power(adev);
                 acpi_device_wakeup(adev, ACPI_STATE_S0, false);
         }
+
+        dev->pm_domain->detach = acpi_dev_pm_detach;
         return 0;
 }
 EXPORT_SYMBOL_GPL(acpi_dev_pm_attach);