static int for_each_memory_block_cb(struct device *dev, void *data)
{
	struct memory_block *mem = to_memory_block(dev);
	struct for_each_memory_block_cb_data *cb_data = data;

	return cb_data->func(mem, cb_data->arg);
}
static int for_each_memory_block_cb(struct device *dev, void *data)
{
	struct memory_block *mem = to_memory_block(dev);
	struct for_each_memory_block_cb_data *cb_data = data;

	return cb_data->func(mem, cb_data->arg);
}