7453 				   struct net_device *new_dev,  in netdev_adjacent_change_prepare()  argument
7459 	if (!new_dev)  in netdev_adjacent_change_prepare()
7462 	if (old_dev && new_dev != old_dev)  in netdev_adjacent_change_prepare()
7465 	err = netdev_upper_dev_link(new_dev, dev, extack);  in netdev_adjacent_change_prepare()
7467 		if (old_dev && new_dev != old_dev)  in netdev_adjacent_change_prepare()
7477 				   struct net_device *new_dev,  in netdev_adjacent_change_commit()  argument
7480 	if (!new_dev || !old_dev)  in netdev_adjacent_change_commit()
7483 	if (new_dev == old_dev)  in netdev_adjacent_change_commit()
7492 				  struct net_device *new_dev,  in netdev_adjacent_change_abort()  argument
7495 	if (!new_dev)  in netdev_adjacent_change_abort()
7498 	if (old_dev && new_dev != old_dev)  in netdev_adjacent_change_abort()
7501 	netdev_upper_dev_unlink(new_dev, dev);  in netdev_adjacent_change_abort()