diff --git a/include/net/ax25.h b/include/net/ax25.h
index 14b72d8..ced202f0 100644
--- a/include/net/ax25.h
+++ b/include/net/ax25.h
@@ -277,7 +277,7 @@
 extern ax25_cb *ax25_find_cb(ax25_address *, ax25_address *, ax25_digi *, struct net_device *);
 extern void ax25_send_to_raw(ax25_address *, struct sk_buff *, int);
 extern void ax25_destroy_socket(ax25_cb *);
-extern ax25_cb *ax25_create_cb(void);
+extern ax25_cb * __must_check ax25_create_cb(void);
 extern void ax25_fillin_cb(ax25_cb *, ax25_dev *);
 extern struct sock *ax25_make_new(struct sock *, struct ax25_dev *);
 
@@ -333,11 +333,12 @@
 extern void ax25_ds_idletimer_expiry(ax25_cb *);
 
 /* ax25_iface.c */
-extern int  ax25_protocol_register(unsigned int, int (*)(struct sk_buff *, ax25_cb *));
+extern int __must_check ax25_protocol_register(unsigned int, int (*)(struct sk_buff *, ax25_cb *));
 extern void ax25_protocol_release(unsigned int);
-extern int  ax25_linkfail_register(void (*)(ax25_cb *, int));
+extern int __must_check ax25_linkfail_register(void (*)(ax25_cb *, int));
 extern void ax25_linkfail_release(void (*)(ax25_cb *, int));
-extern int  ax25_listen_register(ax25_address *, struct net_device *);
+extern int __must_check ax25_listen_register(ax25_address *,
+	struct net_device *);
 extern void ax25_listen_release(ax25_address *, struct net_device *);
 extern int  (*ax25_protocol_function(unsigned int))(struct sk_buff *, ax25_cb *);
 extern int  ax25_listen_mine(ax25_address *, struct net_device *);
@@ -415,7 +416,7 @@
 /* ax25_uid.c */
 extern int  ax25_uid_policy;
 extern ax25_uid_assoc *ax25_findbyuid(uid_t);
-extern int  ax25_uid_ioctl(int, struct sockaddr_ax25 *);
+extern int __must_check ax25_uid_ioctl(int, struct sockaddr_ax25 *);
 extern struct file_operations ax25_uid_fops;
 extern void ax25_uid_free(void);
 
diff --git a/include/net/rose.h b/include/net/rose.h
index 012b09e..0143796 100644
--- a/include/net/rose.h
+++ b/include/net/rose.h
@@ -193,8 +193,8 @@
 extern struct file_operations rose_nodes_fops;
 extern struct file_operations rose_routes_fops;
 
-extern int  rose_add_loopback_neigh(void);
-extern int  rose_add_loopback_node(rose_address *);
+extern int __must_check rose_add_loopback_neigh(void);
+extern int __must_check rose_add_loopback_node(rose_address *);
 extern void rose_del_loopback_node(rose_address *);
 extern void rose_rt_device_down(struct net_device *);
 extern void rose_link_device_down(struct net_device *);
diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
index 6cabf6d..42233df 100644
--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -1088,8 +1088,8 @@
 /*
  *	FIXME: nonblock behaviour looks like it may have a bug.
  */
-static int ax25_connect(struct socket *sock, struct sockaddr *uaddr,
-	int addr_len, int flags)
+static int __must_check ax25_connect(struct socket *sock,
+	struct sockaddr *uaddr, int addr_len, int flags)
 {
 	struct sock *sk = sock->sk;
 	ax25_cb *ax25 = ax25_sk(sk), *ax25t;
diff --git a/net/ax25/ax25_route.c b/net/ax25/ax25_route.c
index 8580356..0a03816 100644
--- a/net/ax25/ax25_route.c
+++ b/net/ax25/ax25_route.c
@@ -71,7 +71,7 @@
 	write_unlock(&ax25_route_lock);
 }
 
-static int ax25_rt_add(struct ax25_routes_struct *route)
+static int __must_check ax25_rt_add(struct ax25_routes_struct *route)
 {
 	ax25_route *ax25_rt;
 	ax25_dev *ax25_dev;
diff --git a/net/netrom/nr_route.c b/net/netrom/nr_route.c
index 0096105..c6aa7aa 100644
--- a/net/netrom/nr_route.c
+++ b/net/netrom/nr_route.c
@@ -87,8 +87,9 @@
  *	Add a new route to a node, and in the process add the node and the
  *	neighbour if it is new.
  */
-static int nr_add_node(ax25_address *nr, const char *mnemonic, ax25_address *ax25,
-	ax25_digi *ax25_digi, struct net_device *dev, int quality, int obs_count)
+static int __must_check nr_add_node(ax25_address *nr, const char *mnemonic,
+	ax25_address *ax25, ax25_digi *ax25_digi, struct net_device *dev,
+	int quality, int obs_count)
 {
 	struct nr_node  *nr_node;
 	struct nr_neigh *nr_neigh;
@@ -406,7 +407,8 @@
 /*
  *	Lock a neighbour with a quality.
  */
-static int nr_add_neigh(ax25_address *callsign, ax25_digi *ax25_digi, struct net_device *dev, unsigned int quality)
+static int __must_check nr_add_neigh(ax25_address *callsign,
+	ax25_digi *ax25_digi, struct net_device *dev, unsigned int quality)
 {
 	struct nr_neigh *nr_neigh;
 
diff --git a/net/rose/rose_route.c b/net/rose/rose_route.c
index 7252344..d02985b 100644
--- a/net/rose/rose_route.c
+++ b/net/rose/rose_route.c
@@ -52,7 +52,7 @@
  *	Add a new route to a node, and in the process add the node and the
  *	neighbour if it is new.
  */
-static int rose_add_node(struct rose_route_struct *rose_route,
+static int __must_check rose_add_node(struct rose_route_struct *rose_route,
 	struct net_device *dev)
 {
 	struct rose_node  *rose_node, *rose_tmpn, *rose_tmpp;