mode_tree_down
mode_tree_down(mtd, 1);
mode_tree_down(mtd, 1);
mode_tree_down(mtd, 0);
mode_tree_down(mtd, 0);
int mode_tree_down(struct mode_tree_data *, int);
!mode_tree_down(data->data, 0)) {
mode_tree_down(data->data, 0);