acpi_dev_put(data->kbd_adev);
 }
 
-static int __maybe_unused yogabook_wmi_suspend(struct device *dev)
+static int yogabook_suspend(struct device *dev)
 {
        struct wmi_device *wdev = container_of(dev, struct wmi_device, dev);
        struct yogabook_wmi *data = dev_get_drvdata(dev);
        return 0;
 }
 
-static int __maybe_unused yogabook_wmi_resume(struct device *dev)
+static int yogabook_resume(struct device *dev)
 {
        struct wmi_device *wdev = container_of(dev, struct wmi_device, dev);
        struct yogabook_wmi *data = dev_get_drvdata(dev);
        { } /* Terminating entry */
 };
 
-static SIMPLE_DEV_PM_OPS(yogabook_wmi_pm_ops,
-                        yogabook_wmi_suspend, yogabook_wmi_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(yogabook_pm_ops, yogabook_suspend, yogabook_resume);
 
 static struct wmi_driver yogabook_wmi_driver = {
        .driver = {
                .name = "yogabook-wmi",
-               .pm = &yogabook_wmi_pm_ops,
+               .pm = pm_sleep_ptr(&yogabook_pm_ops),
        },
        .no_notify_data = true,
        .id_table = yogabook_wmi_id_table,