94 static int build_changeset_next_level(struct overlay_changeset *ovcs,
159 static int overlay_notify(struct overlay_changeset *ovcs,  in overlay_notify()  argument
165 	for (i = 0; i < ovcs->count; i++) {  in overlay_notify()
166 		struct fragment *fragment = &ovcs->fragments[i];  in overlay_notify()
200 		struct overlay_changeset *ovcs, const struct property *prop)  in dup_and_fixup_symbol_prop()  argument
224 	fragment_node = __of_find_node_by_path(ovcs->overlay_tree, path + 1);  in dup_and_fixup_symbol_prop()
229 	for (k = 0; k < ovcs->count; k++) {  in dup_and_fixup_symbol_prop()
230 		fragment = &ovcs->fragments[k];  in dup_and_fixup_symbol_prop()
234 	if (k >= ovcs->count)  in dup_and_fixup_symbol_prop()
302 static int add_changeset_property(struct overlay_changeset *ovcs,  in add_changeset_property()  argument
324 		new_prop = dup_and_fixup_symbol_prop(ovcs, overlay_prop);  in add_changeset_property()
338 		ret = of_changeset_add_property(&ovcs->cset, target->np,  in add_changeset_property()
354 		ret = of_changeset_update_property(&ovcs->cset, target->np,  in add_changeset_property()
404 static int add_changeset_node(struct overlay_changeset *ovcs,  in add_changeset_node()  argument
437 		ret = of_changeset_attach_node(&ovcs->cset, tchild);  in add_changeset_node()
444 		ret = build_changeset_next_level(ovcs, &target_child, node);  in add_changeset_node()
454 		ret = build_changeset_next_level(ovcs, &target_child, node);  in add_changeset_node()
476 static int build_changeset_next_level(struct overlay_changeset *ovcs,  in build_changeset_next_level()  argument
484 		ret = add_changeset_property(ovcs, target, prop, 0);  in build_changeset_next_level()
493 		ret = add_changeset_node(ovcs, target, child);  in build_changeset_next_level()
508 static int build_changeset_symbols_node(struct overlay_changeset *ovcs,  in build_changeset_symbols_node()  argument
516 		ret = add_changeset_property(ovcs, target, prop, 1);  in build_changeset_symbols_node()
527 static int find_dup_cset_node_entry(struct overlay_changeset *ovcs,  in find_dup_cset_node_entry()  argument
539 	list_for_each_entry_continue(ce_2, &ovcs->cset.entries, node) {  in find_dup_cset_node_entry()
560 static int find_dup_cset_prop(struct overlay_changeset *ovcs,  in find_dup_cset_prop()  argument
573 	list_for_each_entry_continue(ce_2, &ovcs->cset.entries, node) {  in find_dup_cset_prop()
606 static int changeset_dup_entry_check(struct overlay_changeset *ovcs)  in changeset_dup_entry_check()  argument
611 	list_for_each_entry(ce_1, &ovcs->cset.entries, node) {  in changeset_dup_entry_check()
612 		dup_entry |= find_dup_cset_node_entry(ovcs, ce_1);  in changeset_dup_entry_check()
613 		dup_entry |= find_dup_cset_prop(ovcs, ce_1);  in changeset_dup_entry_check()
631 static int build_changeset(struct overlay_changeset *ovcs)  in build_changeset()  argument
641 	if (ovcs->symbols_fragment)  in build_changeset()
642 		fragments_count = ovcs->count - 1;  in build_changeset()
644 		fragments_count = ovcs->count;  in build_changeset()
647 		fragment = &ovcs->fragments[i];  in build_changeset()
651 		ret = build_changeset_next_level(ovcs, &target,  in build_changeset()
660 	if (ovcs->symbols_fragment) {  in build_changeset()
661 		fragment = &ovcs->fragments[ovcs->count - 1];  in build_changeset()
665 		ret = build_changeset_symbols_node(ovcs, &target,  in build_changeset()
674 	return changeset_dup_entry_check(ovcs);  in build_changeset()
727 static int init_overlay_changeset(struct overlay_changeset *ovcs,  in init_overlay_changeset()  argument
748 	ovcs->overlay_tree = tree;  in init_overlay_changeset()
749 	ovcs->fdt = fdt;  in init_overlay_changeset()
751 	INIT_LIST_HEAD(&ovcs->ovcs_list);  in init_overlay_changeset()
753 	of_changeset_init(&ovcs->cset);  in init_overlay_changeset()
755 	id = idr_alloc(&ovcs_idr, ovcs, 1, 0, GFP_KERNEL);  in init_overlay_changeset()
806 		ovcs->symbols_fragment = 1;  in init_overlay_changeset()
826 	ovcs->id = id;  in init_overlay_changeset()
827 	ovcs->count = cnt;  in init_overlay_changeset()
828 	ovcs->fragments = fragments;  in init_overlay_changeset()
842 static void free_overlay_changeset(struct overlay_changeset *ovcs)  in free_overlay_changeset()  argument
846 	if (ovcs->cset.entries.next)  in free_overlay_changeset()
847 		of_changeset_destroy(&ovcs->cset);  in free_overlay_changeset()
849 	if (ovcs->id)  in free_overlay_changeset()
850 		idr_remove(&ovcs_idr, ovcs->id);  in free_overlay_changeset()
852 	for (i = 0; i < ovcs->count; i++) {  in free_overlay_changeset()
853 		of_node_put(ovcs->fragments[i].target);  in free_overlay_changeset()
854 		of_node_put(ovcs->fragments[i].overlay);  in free_overlay_changeset()
856 	kfree(ovcs->fragments);  in free_overlay_changeset()
862 	kfree(ovcs->overlay_tree);  in free_overlay_changeset()
863 	kfree(ovcs->fdt);  in free_overlay_changeset()
864 	kfree(ovcs);  in free_overlay_changeset()
913 	struct overlay_changeset *ovcs;  in of_overlay_apply()  local
929 	ovcs = kzalloc(sizeof(*ovcs), GFP_KERNEL);  in of_overlay_apply()
930 	if (!ovcs) {  in of_overlay_apply()
944 	ret = init_overlay_changeset(ovcs, fdt, tree);  in of_overlay_apply()
953 	ret = overlay_notify(ovcs, OF_OVERLAY_PRE_APPLY);  in of_overlay_apply()
959 	ret = build_changeset(ovcs);  in of_overlay_apply()
964 	ret = __of_changeset_apply_entries(&ovcs->cset, &ret_revert);  in of_overlay_apply()
976 	ret = __of_changeset_apply_notify(&ovcs->cset);  in of_overlay_apply()
981 	list_add_tail(&ovcs->ovcs_list, &ovcs_list);  in of_overlay_apply()
982 	*ovcs_id = ovcs->id;  in of_overlay_apply()
984 	ret_tmp = overlay_notify(ovcs, OF_OVERLAY_POST_APPLY);  in of_overlay_apply()
999 	free_overlay_changeset(ovcs);  in of_overlay_apply()
1099 	struct overlay_changeset *ovcs;  in node_overlaps_later_cs()  local
1102 	list_for_each_entry_reverse(ovcs, &ovcs_list, ovcs_list) {  in node_overlaps_later_cs()
1103 		if (ovcs == remove_ovcs)  in node_overlaps_later_cs()
1106 		list_for_each_entry(ce, &ovcs->cset.entries, node) {  in node_overlaps_later_cs()
1109 					__func__, remove_ovcs->id, ovcs->id,  in node_overlaps_later_cs()
1115 					__func__, remove_ovcs->id, ovcs->id,  in node_overlaps_later_cs()
1185 	struct overlay_changeset *ovcs;  in of_overlay_remove()  local
1198 	ovcs = idr_find(&ovcs_idr, *ovcs_id);  in of_overlay_remove()
1199 	if (!ovcs) {  in of_overlay_remove()
1205 	if (!overlay_removal_is_ok(ovcs)) {  in of_overlay_remove()
1210 	ret = overlay_notify(ovcs, OF_OVERLAY_PRE_REMOVE);  in of_overlay_remove()
1216 	list_del(&ovcs->ovcs_list);  in of_overlay_remove()
1225 	ret = __of_changeset_revert_entries(&ovcs->cset, &ret_apply);  in of_overlay_remove()
1235 	ret = __of_changeset_revert_notify(&ovcs->cset);  in of_overlay_remove()
1242 	ret_tmp = overlay_notify(ovcs, OF_OVERLAY_POST_REMOVE);  in of_overlay_remove()
1250 	free_overlay_changeset(ovcs);  in of_overlay_remove()
1271 	struct overlay_changeset *ovcs, *ovcs_n;  in of_overlay_remove_all()  local
1275 	list_for_each_entry_safe_reverse(ovcs, ovcs_n, &ovcs_list, ovcs_list) {  in of_overlay_remove_all()
1276 		ret = of_overlay_remove(&ovcs->id);  in of_overlay_remove_all()