28     if (res == NULL) return NULL;  in ufdt_node_construct()
30     res->parent.sibling = NULL;  in ufdt_node_construct()
35     if (res == NULL) return NULL;  in ufdt_node_construct()
37     res->parent.sibling = NULL;  in ufdt_node_construct()
38     res->child = NULL;  in ufdt_node_construct()
45   if (node == NULL) return;  in ufdt_node_destruct()
49     while (it != NULL) {  in ufdt_node_destruct()
87   struct ufdt_node **it = NULL;  in ufdt_node_get_subnode_by_name_len()
91   return NULL;  in ufdt_node_get_subnode_by_name_len()
101   if (!node) return NULL;  in ufdt_node_get_property_by_name_len()
103   struct ufdt_node **it = NULL;  in ufdt_node_get_property_by_name_len()
107   return NULL;  in ufdt_node_get_property_by_name_len()
117     return NULL;  in ufdt_node_get_fdt_prop_data()
120   if (out_len != NULL) {  in ufdt_node_get_fdt_prop_data()
176     struct ufdt_node *next = NULL;  in ufdt_node_get_node_by_path_len()
212     cur_node->sibling = NULL;  in merge_children()
213     struct ufdt_node *target_node = NULL;  in merge_children()
221     if (target_node == NULL) {  in merge_children()
236   ((struct ufdt_node_fdt_node *)node_b)->child = NULL;  in merge_children()