56 static int of_overlay_apply_one(struct of_overlay *ov,
59 static int of_overlay_apply_single_property(struct of_overlay *ov,  in of_overlay_apply_single_property()  argument
79 		return of_changeset_add_property(&ov->cset, target, propn);  in of_overlay_apply_single_property()
82 	return of_changeset_update_property(&ov->cset, target, propn);  in of_overlay_apply_single_property()
85 static int of_overlay_apply_single_device_node(struct of_overlay *ov,  in of_overlay_apply_single_device_node()  argument
100 		ret = of_overlay_apply_one(ov, tchild, child);  in of_overlay_apply_single_device_node()
111 		ret = of_changeset_attach_node(&ov->cset, tchild);  in of_overlay_apply_single_device_node()
115 		ret = of_overlay_apply_one(ov, tchild, child);  in of_overlay_apply_single_device_node()
130 static int of_overlay_apply_one(struct of_overlay *ov,  in of_overlay_apply_one()  argument
138 		ret = of_overlay_apply_single_property(ov, target, prop);  in of_overlay_apply_one()
147 		ret = of_overlay_apply_single_device_node(ov, target, child);  in of_overlay_apply_one()
168 static int of_overlay_apply(struct of_overlay *ov)  in of_overlay_apply()  argument
173 	for (i = 0; i < ov->count; i++) {  in of_overlay_apply()
174 		struct of_overlay_info *ovinfo = &ov->ovinfo_tab[i];  in of_overlay_apply()
176 		err = of_overlay_apply_one(ov, ovinfo->target, ovinfo->overlay);  in of_overlay_apply()
230 static int of_fill_overlay_info(struct of_overlay *ov,  in of_fill_overlay_info()  argument
263 static int of_build_overlay_info(struct of_overlay *ov,  in of_build_overlay_info()  argument
282 		err = of_fill_overlay_info(ov, node, &ovinfo[cnt]);  in of_build_overlay_info()
293 	ov->count = cnt;  in of_build_overlay_info()
294 	ov->ovinfo_tab = ovinfo;  in of_build_overlay_info()
308 static int of_free_overlay_info(struct of_overlay *ov)  in of_free_overlay_info()  argument
314 	for (i = ov->count - 1; i >= 0; i--) {  in of_free_overlay_info()
315 		ovinfo = &ov->ovinfo_tab[i];  in of_free_overlay_info()
320 	kfree(ov->ovinfo_tab);  in of_free_overlay_info()
340 	struct of_overlay *ov;  in of_overlay_create()  local
344 	ov = kzalloc(sizeof(*ov), GFP_KERNEL);  in of_overlay_create()
345 	if (ov == NULL)  in of_overlay_create()
347 	ov->id = -1;  in of_overlay_create()
349 	INIT_LIST_HEAD(&ov->node);  in of_overlay_create()
351 	of_changeset_init(&ov->cset);  in of_overlay_create()
355 	id = idr_alloc(&ov_idr, ov, 0, 0, GFP_KERNEL);  in of_overlay_create()
362 	ov->id = id;  in of_overlay_create()
365 	err = of_build_overlay_info(ov, tree);  in of_overlay_create()
373 	err = of_overlay_apply(ov);  in of_overlay_create()
381 	err = of_changeset_apply(&ov->cset);  in of_overlay_create()
389 	list_add_tail(&ov->node, &ov_list);  in of_overlay_create()
397 	of_free_overlay_info(ov);  in of_overlay_create()
399 	idr_remove(&ov_idr, ov->id);  in of_overlay_create()
401 	of_changeset_destroy(&ov->cset);  in of_overlay_create()
402 	kfree(ov);  in of_overlay_create()
428 static int overlay_is_topmost(struct of_overlay *ov, struct device_node *dn)  in overlay_is_topmost()  argument
435 		if (ovt == ov)  in overlay_is_topmost()
442 					__func__, ov->id, ovt->id,  in overlay_is_topmost()
463 static int overlay_removal_is_ok(struct of_overlay *ov)  in overlay_removal_is_ok()  argument
467 	list_for_each_entry(ce, &ov->cset.entries, node) {  in overlay_removal_is_ok()
468 		if (!overlay_is_topmost(ov, ce->np)) {  in overlay_removal_is_ok()
470 					__func__, ov->id);  in overlay_removal_is_ok()
488 	struct of_overlay *ov;  in of_overlay_destroy()  local
493 	ov = idr_find(&ov_idr, id);  in of_overlay_destroy()
494 	if (ov == NULL) {  in of_overlay_destroy()
502 	if (!overlay_removal_is_ok(ov)) {  in of_overlay_destroy()
510 	list_del(&ov->node);  in of_overlay_destroy()
511 	of_changeset_revert(&ov->cset);  in of_overlay_destroy()
512 	of_free_overlay_info(ov);  in of_overlay_destroy()
514 	of_changeset_destroy(&ov->cset);  in of_overlay_destroy()
515 	kfree(ov);  in of_overlay_destroy()
535 	struct of_overlay *ov, *ovn;  in of_overlay_destroy_all()  local
540 	list_for_each_entry_safe_reverse(ov, ovn, &ov_list, node) {  in of_overlay_destroy_all()
541 		list_del(&ov->node);  in of_overlay_destroy_all()
542 		of_changeset_revert(&ov->cset);  in of_overlay_destroy_all()
543 		of_free_overlay_info(ov);  in of_overlay_destroy_all()
544 		idr_remove(&ov_idr, ov->id);  in of_overlay_destroy_all()
545 		kfree(ov);  in of_overlay_destroy_all()