To be consistent with 
4bff6749905d ("PCI: Move device_del() from
pci_stop_dev() to pci_destroy_dev()", this changes pci_stop_root_bus()
to use device_release_driver() instead of device_del().
This also changes pci_remove_root_bus() to use device_unregister()
instead of put_device() so it corresponds with the device_register()
call in pci_create_root_bus().
[bhelgaas: changelog]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
 
                pci_stop_bus_device(child);
 
        /* stop the host bridge */
-       device_del(&host_bridge->dev);
+       device_release_driver(&host_bridge->dev);
 }
 
 void pci_remove_root_bus(struct pci_bus *bus)
        host_bridge->bus = NULL;
 
        /* remove the host bridge */
-       put_device(&host_bridge->dev);
+       device_unregister(&host_bridge->dev);
 }