diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
index a028d37..1bc0e85 100644
--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -570,7 +570,7 @@
 			res = -EINVAL;
 			break;
 		}
-		ax25->rtt = (opt * HZ) / 2;
+		ax25->rtt = (opt * HZ) >> 1;
 		ax25->t1  = opt * HZ;
 		break;
 
@@ -1863,6 +1863,7 @@
 #ifdef CONFIG_PROC_FS
 
 static void *ax25_info_start(struct seq_file *seq, loff_t *pos)
+	__acquires(ax25_list_lock)
 {
 	struct ax25_cb *ax25;
 	struct hlist_node *node;
@@ -1886,6 +1887,7 @@
 }
 
 static void ax25_info_stop(struct seq_file *seq, void *v)
+	__releases(ax25_list_lock)
 {
 	spin_unlock_bh(&ax25_list_lock);
 }