633 	struct resource *first, *next;  in __insert_resource()  local
635 	for (;; parent = first) {  in __insert_resource()
636 		first = __request_resource(parent, new);  in __insert_resource()
637 		if (!first)  in __insert_resource()
638 			return first;  in __insert_resource()
640 		if (first == parent)  in __insert_resource()
641 			return first;  in __insert_resource()
642 		if (WARN_ON(first == new))	/* duplicated insertion */  in __insert_resource()
643 			return first;  in __insert_resource()
645 		if ((first->start > new->start) || (first->end < new->end))  in __insert_resource()
647 		if ((first->start == new->start) && (first->end == new->end))  in __insert_resource()
651 	for (next = first; ; next = next->sibling) {  in __insert_resource()
663 	new->child = first;  in __insert_resource()
666 	for (next = first; next; next = next->sibling)  in __insert_resource()
669 	if (parent->child == first) {  in __insert_resource()
673 		while (next->sibling != first)  in __insert_resource()