net: ax25: remove route refcount

Nothing takes the refcount since v4.9.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/ax25.h

@@ -187,18 +187,12 @@ typedef struct {
 
 typedef struct ax25_route {
 	struct ax25_route	*next;
-	refcount_t		refcount;
 	ax25_address		callsign;
 	struct net_device	*dev;
 	ax25_digi		*digipeat;
 	char			ip_mode;
 } ax25_route;
 
-static inline void ax25_hold_route(ax25_route *ax25_rt)
-{
-	refcount_inc(&ax25_rt->refcount);
-}
-
 void __ax25_put_route(ax25_route *ax25_rt);
 
 extern rwlock_t ax25_route_lock;
@@ -213,12 +207,6 @@ static inline void ax25_route_lock_unuse(void)
 	read_unlock(&ax25_route_lock);
 }
 
-static inline void ax25_put_route(ax25_route *ax25_rt)
-{
-	if (refcount_dec_and_test(&ax25_rt->refcount))
-		__ax25_put_route(ax25_rt);
-}
-
 typedef struct {
 	char			slave;			/* slave_mode?   */
 	struct timer_list	slave_timer;		/* timeout timer */

net/ax25/ax25_route.c

@@ -111,7 +111,6 @@ static int __must_check ax25_rt_add(struct ax25_routes_struct *route)
 		return -ENOMEM;
 	}
 
-	refcount_set(&ax25_rt->refcount, 1);
 	ax25_rt->callsign     = route->dest_addr;
 	ax25_rt->dev          = ax25_dev->dev;
 	ax25_rt->digipeat     = NULL;
@@ -160,12 +159,12 @@ static int ax25_rt_del(struct ax25_routes_struct *route)
 		    ax25cmp(&route->dest_addr, &s->callsign) == 0) {
 			if (ax25_route_list == s) {
 				ax25_route_list = s->next;
-				ax25_put_route(s);
+				__ax25_put_route(s);
 			} else {
 				for (t = ax25_route_list; t != NULL; t = t->next) {
 					if (t->next == s) {
 						t->next = s->next;
-						ax25_put_route(s);
+						__ax25_put_route(s);
 						break;
 					}
 				}