--- zzzz-none-000/linux-3.10.107/include/linux/klist.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/include/linux/klist.h	2021-02-04 17:41:59.000000000 +0000
@@ -44,7 +44,7 @@
 
 extern void klist_add_tail(struct klist_node *n, struct klist *k);
 extern void klist_add_head(struct klist_node *n, struct klist *k);
-extern void klist_add_after(struct klist_node *n, struct klist_node *pos);
+extern void klist_add_behind(struct klist_node *n, struct klist_node *pos);
 extern void klist_add_before(struct klist_node *n, struct klist_node *pos);
 
 extern void klist_del(struct klist_node *n);
@@ -63,6 +63,7 @@
 extern void klist_iter_init_node(struct klist *k, struct klist_iter *i,
 				 struct klist_node *n);
 extern void klist_iter_exit(struct klist_iter *i);
+extern struct klist_node *klist_prev(struct klist_iter *i);
 extern struct klist_node *klist_next(struct klist_iter *i);
 
 #endif