sdev_devtree_gen
(ddv->sdev_devtree_gen != devtree_gen) ||
ddv->sdev_path, ddv->sdev_devtree_gen, devtree_gen));
ddv->sdev_devtree_gen = devtree_gen;
dv->sdev_devtree_gen = 0;
dv->sdev_devtree_gen = 0;