numa.c

		memcell_buf = of_get_property(memory, "reg", &len);
		if (!memcell_buf || len <= 0)
			continue;

		/* ranges in cell */
		ranges = (len >> 2) / (n_mem_addr_cells + n_mem_size_cells);
ha_new_range:
		start = read_n_cells(n_mem_addr_cells, &memcell_buf);
		size = read_n_cells(n_mem_size_cells, &memcell_buf);
		nid = of_node_to_nid_single(memory);

		if (valid_hot_add_scn(&nid, start, size, scn_addr)) {
			of_node_put(memory);
			return nid;
		}

		if (--ranges)		/* process all ranges in cell */
			goto ha_new_range;
	}
	BUG();	/* section address should be found above */
	return 0;
}
#endif /* CONFIG_MEMORY_HOTPLUG */