757 	struct resource *first, *next;  in __insert_resource()  local
759 	for (;; parent = first) {  in __insert_resource()
760 		first = __request_resource(parent, new);  in __insert_resource()
761 		if (!first)  in __insert_resource()
762 			return first;  in __insert_resource()
764 		if (first == parent)  in __insert_resource()
765 			return first;  in __insert_resource()
766 		if (WARN_ON(first == new))	/* duplicated insertion */  in __insert_resource()
767 			return first;  in __insert_resource()
769 		if ((first->start > new->start) || (first->end < new->end))  in __insert_resource()
771 		if ((first->start == new->start) && (first->end == new->end))  in __insert_resource()
775 	for (next = first; ; next = next->sibling) {  in __insert_resource()
787 	new->child = first;  in __insert_resource()
790 	for (next = first; next; next = next->sibling)  in __insert_resource()
793 	if (parent->child == first) {  in __insert_resource()
797 		while (next->sibling != first)  in __insert_resource()