diff --git a/include/net/ax25.h b/include/net/ax25.h
index 89ed9ac5701f..bf0396e9a5d3 100644
--- a/include/net/ax25.h
+++ b/include/net/ax25.h
@@ -195,7 +195,7 @@ static inline void ax25_hold_route(ax25_route *ax25_rt)
 	atomic_inc(&ax25_rt->refcount);
 }
 
-extern void __ax25_put_route(ax25_route *ax25_rt);
+void __ax25_put_route(ax25_route *ax25_rt);
 
 static inline void ax25_put_route(ax25_route *ax25_rt)
 {
@@ -272,30 +272,31 @@ static inline __be16 ax25_type_trans(struct sk_buff *skb, struct net_device *dev
 /* af_ax25.c */
 extern struct hlist_head ax25_list;
 extern spinlock_t ax25_list_lock;
-extern void ax25_cb_add(ax25_cb *);
+void ax25_cb_add(ax25_cb *);
 struct sock *ax25_find_listener(ax25_address *, int, struct net_device *, int);
 struct sock *ax25_get_socket(ax25_address *, ax25_address *, int);
-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 * __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 *);
+ax25_cb *ax25_find_cb(ax25_address *, ax25_address *, ax25_digi *,
+		      struct net_device *);
+void ax25_send_to_raw(ax25_address *, struct sk_buff *, int);
+void ax25_destroy_socket(ax25_cb *);
+ax25_cb * __must_check ax25_create_cb(void);
+void ax25_fillin_cb(ax25_cb *, ax25_dev *);
+struct sock *ax25_make_new(struct sock *, struct ax25_dev *);
 
 /* ax25_addr.c */
 extern const ax25_address ax25_bcast;
 extern const ax25_address ax25_defaddr;
 extern const ax25_address null_ax25_address;
-extern char *ax2asc(char *buf, const ax25_address *);
-extern void asc2ax(ax25_address *addr, const char *callsign);
-extern int ax25cmp(const ax25_address *, const ax25_address *);
-extern int ax25digicmp(const ax25_digi *, const ax25_digi *);
-extern const unsigned char *ax25_addr_parse(const unsigned char *, int,
+char *ax2asc(char *buf, const ax25_address *);
+void asc2ax(ax25_address *addr, const char *callsign);
+int ax25cmp(const ax25_address *, const ax25_address *);
+int ax25digicmp(const ax25_digi *, const ax25_digi *);
+const unsigned char *ax25_addr_parse(const unsigned char *, int,
 	ax25_address *, ax25_address *, ax25_digi *, int *, int *);
-extern int  ax25_addr_build(unsigned char *, const ax25_address *,
-	const ax25_address *, const ax25_digi *, int, int);
-extern int  ax25_addr_size(const ax25_digi *);
-extern void ax25_digi_invert(const ax25_digi *, ax25_digi *);
+int ax25_addr_build(unsigned char *, const ax25_address *,
+		    const ax25_address *, const ax25_digi *, int, int);
+int ax25_addr_size(const ax25_digi *);
+void ax25_digi_invert(const ax25_digi *, ax25_digi *);
 
 /* ax25_dev.c */
 extern ax25_dev *ax25_dev_list;
@@ -306,33 +307,33 @@ static inline ax25_dev *ax25_dev_ax25dev(struct net_device *dev)
 	return dev->ax25_ptr;
 }
 
-extern ax25_dev *ax25_addr_ax25dev(ax25_address *);
-extern void ax25_dev_device_up(struct net_device *);
-extern void ax25_dev_device_down(struct net_device *);
-extern int  ax25_fwd_ioctl(unsigned int, struct ax25_fwd_struct *);
-extern struct net_device *ax25_fwd_dev(struct net_device *);
-extern void ax25_dev_free(void);
+ax25_dev *ax25_addr_ax25dev(ax25_address *);
+void ax25_dev_device_up(struct net_device *);
+void ax25_dev_device_down(struct net_device *);
+int ax25_fwd_ioctl(unsigned int, struct ax25_fwd_struct *);
+struct net_device *ax25_fwd_dev(struct net_device *);
+void ax25_dev_free(void);
 
 /* ax25_ds_in.c */
-extern int  ax25_ds_frame_in(ax25_cb *, struct sk_buff *, int);
+int ax25_ds_frame_in(ax25_cb *, struct sk_buff *, int);
 
 /* ax25_ds_subr.c */
-extern void ax25_ds_nr_error_recovery(ax25_cb *);
-extern void ax25_ds_enquiry_response(ax25_cb *);
-extern void ax25_ds_establish_data_link(ax25_cb *);
-extern void ax25_dev_dama_off(ax25_dev *);
-extern void ax25_dama_on(ax25_cb *);
-extern void ax25_dama_off(ax25_cb *);
+void ax25_ds_nr_error_recovery(ax25_cb *);
+void ax25_ds_enquiry_response(ax25_cb *);
+void ax25_ds_establish_data_link(ax25_cb *);
+void ax25_dev_dama_off(ax25_dev *);
+void ax25_dama_on(ax25_cb *);
+void ax25_dama_off(ax25_cb *);
 
 /* ax25_ds_timer.c */
-extern void ax25_ds_setup_timer(ax25_dev *);
-extern void ax25_ds_set_timer(ax25_dev *);
-extern void ax25_ds_del_timer(ax25_dev *);
-extern void ax25_ds_timer(ax25_cb *);
-extern void ax25_ds_t1_timeout(ax25_cb *);
-extern void ax25_ds_heartbeat_expiry(ax25_cb *);
-extern void ax25_ds_t3timer_expiry(ax25_cb *);
-extern void ax25_ds_idletimer_expiry(ax25_cb *);
+void ax25_ds_setup_timer(ax25_dev *);
+void ax25_ds_set_timer(ax25_dev *);
+void ax25_ds_del_timer(ax25_dev *);
+void ax25_ds_timer(ax25_cb *);
+void ax25_ds_t1_timeout(ax25_cb *);
+void ax25_ds_heartbeat_expiry(ax25_cb *);
+void ax25_ds_t3timer_expiry(ax25_cb *);
+void ax25_ds_idletimer_expiry(ax25_cb *);
 
 /* ax25_iface.c */
 
@@ -342,107 +343,109 @@ struct ax25_protocol {
 	int (*func)(struct sk_buff *, ax25_cb *);
 };
 
-extern void ax25_register_pid(struct ax25_protocol *ap);
-extern void ax25_protocol_release(unsigned int);
+void ax25_register_pid(struct ax25_protocol *ap);
+void ax25_protocol_release(unsigned int);
 
 struct ax25_linkfail {
 	struct hlist_node lf_node;
 	void (*func)(ax25_cb *, int);
 };
 
-extern void ax25_linkfail_register(struct ax25_linkfail *lf);
-extern void ax25_linkfail_release(struct ax25_linkfail *lf);
-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 *);
-extern void ax25_link_failed(ax25_cb *, int);
-extern int  ax25_protocol_is_registered(unsigned int);
+void ax25_linkfail_register(struct ax25_linkfail *lf);
+void ax25_linkfail_release(struct ax25_linkfail *lf);
+int __must_check ax25_listen_register(ax25_address *, struct net_device *);
+void ax25_listen_release(ax25_address *, struct net_device *);
+int(*ax25_protocol_function(unsigned int))(struct sk_buff *, ax25_cb *);
+int ax25_listen_mine(ax25_address *, struct net_device *);
+void ax25_link_failed(ax25_cb *, int);
+int ax25_protocol_is_registered(unsigned int);
 
 /* ax25_in.c */
-extern int  ax25_rx_iframe(ax25_cb *, struct sk_buff *);
-extern int  ax25_kiss_rcv(struct sk_buff *, struct net_device *, struct packet_type *, struct net_device *);
+int ax25_rx_iframe(ax25_cb *, struct sk_buff *);
+int ax25_kiss_rcv(struct sk_buff *, struct net_device *, struct packet_type *,
+		  struct net_device *);
 
 /* ax25_ip.c */
-extern int ax25_hard_header(struct sk_buff *, struct net_device *,
-			    unsigned short, const void *,
-			    const void *, unsigned int);
-extern int  ax25_rebuild_header(struct sk_buff *);
+int ax25_hard_header(struct sk_buff *, struct net_device *, unsigned short,
+		     const void *, const void *, unsigned int);
+int ax25_rebuild_header(struct sk_buff *);
 extern const struct header_ops ax25_header_ops;
 
 /* ax25_out.c */
-extern ax25_cb *ax25_send_frame(struct sk_buff *, int, ax25_address *, ax25_address *, ax25_digi *, struct net_device *);
-extern void ax25_output(ax25_cb *, int, struct sk_buff *);
-extern void ax25_kick(ax25_cb *);
-extern void ax25_transmit_buffer(ax25_cb *, struct sk_buff *, int);
-extern void ax25_queue_xmit(struct sk_buff *skb, struct net_device *dev);
-extern int  ax25_check_iframes_acked(ax25_cb *, unsigned short);
+ax25_cb *ax25_send_frame(struct sk_buff *, int, ax25_address *, ax25_address *,
+			 ax25_digi *, struct net_device *);
+void ax25_output(ax25_cb *, int, struct sk_buff *);
+void ax25_kick(ax25_cb *);
+void ax25_transmit_buffer(ax25_cb *, struct sk_buff *, int);
+void ax25_queue_xmit(struct sk_buff *skb, struct net_device *dev);
+int ax25_check_iframes_acked(ax25_cb *, unsigned short);
 
 /* ax25_route.c */
-extern void ax25_rt_device_down(struct net_device *);
-extern int  ax25_rt_ioctl(unsigned int, void __user *);
+void ax25_rt_device_down(struct net_device *);
+int ax25_rt_ioctl(unsigned int, void __user *);
 extern const struct file_operations ax25_route_fops;
-extern ax25_route *ax25_get_route(ax25_address *addr, struct net_device *dev);
-extern int  ax25_rt_autobind(ax25_cb *, ax25_address *);
-extern struct sk_buff *ax25_rt_build_path(struct sk_buff *, ax25_address *, ax25_address *, ax25_digi *);
-extern void ax25_rt_free(void);
+ax25_route *ax25_get_route(ax25_address *addr, struct net_device *dev);
+int ax25_rt_autobind(ax25_cb *, ax25_address *);
+struct sk_buff *ax25_rt_build_path(struct sk_buff *, ax25_address *,
+				   ax25_address *, ax25_digi *);
+void ax25_rt_free(void);
 
 /* ax25_std_in.c */
-extern int  ax25_std_frame_in(ax25_cb *, struct sk_buff *, int);
+int ax25_std_frame_in(ax25_cb *, struct sk_buff *, int);
 
 /* ax25_std_subr.c */
-extern void ax25_std_nr_error_recovery(ax25_cb *);
-extern void ax25_std_establish_data_link(ax25_cb *);
-extern void ax25_std_transmit_enquiry(ax25_cb *);
-extern void ax25_std_enquiry_response(ax25_cb *);
-extern void ax25_std_timeout_response(ax25_cb *);
+void ax25_std_nr_error_recovery(ax25_cb *);
+void ax25_std_establish_data_link(ax25_cb *);
+void ax25_std_transmit_enquiry(ax25_cb *);
+void ax25_std_enquiry_response(ax25_cb *);
+void ax25_std_timeout_response(ax25_cb *);
 
 /* ax25_std_timer.c */
-extern void ax25_std_heartbeat_expiry(ax25_cb *);
-extern void ax25_std_t1timer_expiry(ax25_cb *);
-extern void ax25_std_t2timer_expiry(ax25_cb *);
-extern void ax25_std_t3timer_expiry(ax25_cb *);
-extern void ax25_std_idletimer_expiry(ax25_cb *);
+void ax25_std_heartbeat_expiry(ax25_cb *);
+void ax25_std_t1timer_expiry(ax25_cb *);
+void ax25_std_t2timer_expiry(ax25_cb *);
+void ax25_std_t3timer_expiry(ax25_cb *);
+void ax25_std_idletimer_expiry(ax25_cb *);
 
 /* ax25_subr.c */
-extern void ax25_clear_queues(ax25_cb *);
-extern void ax25_frames_acked(ax25_cb *, unsigned short);
-extern void ax25_requeue_frames(ax25_cb *);
-extern int  ax25_validate_nr(ax25_cb *, unsigned short);
-extern int  ax25_decode(ax25_cb *, struct sk_buff *, int *, int *, int *);
-extern void ax25_send_control(ax25_cb *, int, int, int);
-extern void ax25_return_dm(struct net_device *, ax25_address *, ax25_address *, ax25_digi *);
-extern void ax25_calculate_t1(ax25_cb *);
-extern void ax25_calculate_rtt(ax25_cb *);
-extern void ax25_disconnect(ax25_cb *, int);
+void ax25_clear_queues(ax25_cb *);
+void ax25_frames_acked(ax25_cb *, unsigned short);
+void ax25_requeue_frames(ax25_cb *);
+int ax25_validate_nr(ax25_cb *, unsigned short);
+int ax25_decode(ax25_cb *, struct sk_buff *, int *, int *, int *);
+void ax25_send_control(ax25_cb *, int, int, int);
+void ax25_return_dm(struct net_device *, ax25_address *, ax25_address *,
+		    ax25_digi *);
+void ax25_calculate_t1(ax25_cb *);
+void ax25_calculate_rtt(ax25_cb *);
+void ax25_disconnect(ax25_cb *, int);
 
 /* ax25_timer.c */
-extern void ax25_setup_timers(ax25_cb *);
-extern void ax25_start_heartbeat(ax25_cb *);
-extern void ax25_start_t1timer(ax25_cb *);
-extern void ax25_start_t2timer(ax25_cb *);
-extern void ax25_start_t3timer(ax25_cb *);
-extern void ax25_start_idletimer(ax25_cb *);
-extern void ax25_stop_heartbeat(ax25_cb *);
-extern void ax25_stop_t1timer(ax25_cb *);
-extern void ax25_stop_t2timer(ax25_cb *);
-extern void ax25_stop_t3timer(ax25_cb *);
-extern void ax25_stop_idletimer(ax25_cb *);
-extern int  ax25_t1timer_running(ax25_cb *);
-extern unsigned long ax25_display_timer(struct timer_list *);
+void ax25_setup_timers(ax25_cb *);
+void ax25_start_heartbeat(ax25_cb *);
+void ax25_start_t1timer(ax25_cb *);
+void ax25_start_t2timer(ax25_cb *);
+void ax25_start_t3timer(ax25_cb *);
+void ax25_start_idletimer(ax25_cb *);
+void ax25_stop_heartbeat(ax25_cb *);
+void ax25_stop_t1timer(ax25_cb *);
+void ax25_stop_t2timer(ax25_cb *);
+void ax25_stop_t3timer(ax25_cb *);
+void ax25_stop_idletimer(ax25_cb *);
+int ax25_t1timer_running(ax25_cb *);
+unsigned long ax25_display_timer(struct timer_list *);
 
 /* ax25_uid.c */
 extern int  ax25_uid_policy;
-extern ax25_uid_assoc *ax25_findbyuid(kuid_t);
-extern int __must_check ax25_uid_ioctl(int, struct sockaddr_ax25 *);
+ax25_uid_assoc *ax25_findbyuid(kuid_t);
+int __must_check ax25_uid_ioctl(int, struct sockaddr_ax25 *);
 extern const struct file_operations ax25_uid_fops;
-extern void ax25_uid_free(void);
+void ax25_uid_free(void);
 
 /* sysctl_net_ax25.c */
 #ifdef CONFIG_SYSCTL
-extern int ax25_register_dev_sysctl(ax25_dev *ax25_dev);
-extern void ax25_unregister_dev_sysctl(ax25_dev *ax25_dev);
+int ax25_register_dev_sysctl(ax25_dev *ax25_dev);
+void ax25_unregister_dev_sysctl(ax25_dev *ax25_dev);
 #else
 static inline int ax25_register_dev_sysctl(ax25_dev *ax25_dev) { return 0; }
 static inline void ax25_unregister_dev_sysctl(ax25_dev *ax25_dev) {}