overlay_root 1022 drivers/of/overlay.c struct device_node *overlay_root; overlay_root 1045 drivers/of/overlay.c of_fdt_unflatten_tree(new_fdt, NULL, &overlay_root); overlay_root 1046 drivers/of/overlay.c if (!overlay_root) { overlay_root 1052 drivers/of/overlay.c ret = of_overlay_apply(new_fdt, overlay_root, ovcs_id);