platform/surface: aggregator_registry: Use generic client removal function

Use generic client removal function introduced in the previous commit
instead of defining our own one.
Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com>
Link: https://lore.kernel.org/r/20211028002243.1586083-3-luzmaximilian@gmail.comReviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

drivers/platform/surface/surface_aggregator_registry.c

@@ -258,20 +258,6 @@ static int ssam_uid_from_string(const char *str, struct ssam_device_uid *uid)
 	return 0;
 }
 
-static int ssam_hub_remove_devices_fn(struct device *dev, void *data)
-{
-	if (!is_ssam_device(dev))
-		return 0;
-
-	ssam_device_remove(to_ssam_device(dev));
-	return 0;
-}
-
-static void ssam_hub_remove_devices(struct device *parent)
-{
-	device_for_each_child_reverse(parent, NULL, ssam_hub_remove_devices_fn);
-}
-
 static int ssam_hub_add_device(struct device *parent, struct ssam_controller *ctrl,
 			       struct fwnode_handle *node)
 {
@@ -317,7 +303,7 @@ static int ssam_hub_add_devices(struct device *parent, struct ssam_controller *c
 
 	return 0;
 err:
-	ssam_hub_remove_devices(parent);
+	ssam_remove_clients(parent);
 	return status;
 }
 
@@ -414,7 +400,7 @@ static void ssam_base_hub_update_workfn(struct work_struct *work)
 	if (hub->state == SSAM_BASE_HUB_CONNECTED)
 		status = ssam_hub_add_devices(&hub->sdev->dev, hub->sdev->ctrl, node);
 	else
-		ssam_hub_remove_devices(&hub->sdev->dev);
+		ssam_remove_clients(&hub->sdev->dev);
 
 	if (status)
 		dev_err(&hub->sdev->dev, "failed to update base-hub devices: %d\n", status);
@@ -496,7 +482,7 @@ static int ssam_base_hub_probe(struct ssam_device *sdev)
 err:
 	ssam_notifier_unregister(sdev->ctrl, &hub->notif);
 	cancel_delayed_work_sync(&hub->update_work);
-	ssam_hub_remove_devices(&sdev->dev);
+	ssam_remove_clients(&sdev->dev);
 	return status;
 }
 
@@ -508,7 +494,7 @@ static void ssam_base_hub_remove(struct ssam_device *sdev)
 
 	ssam_notifier_unregister(sdev->ctrl, &hub->notif);
 	cancel_delayed_work_sync(&hub->update_work);
-	ssam_hub_remove_devices(&sdev->dev);
+	ssam_remove_clients(&sdev->dev);
 }
 
 static const struct ssam_device_id ssam_base_hub_match[] = {
@@ -625,7 +611,7 @@ static int ssam_platform_hub_remove(struct platform_device *pdev)
 {
 	const struct software_node **nodes = platform_get_drvdata(pdev);
 
-	ssam_hub_remove_devices(&pdev->dev);
+	ssam_remove_clients(&pdev->dev);
 	set_secondary_fwnode(&pdev->dev, NULL);
 	software_node_unregister_node_group(nodes);
 	return 0;