diff --git a/drivers/net/hamradio/6pack.c b/drivers/net/hamradio/6pack.c
index 7c4a4151ef0f..9f0b1c342b77 100644
--- a/drivers/net/hamradio/6pack.c
+++ b/drivers/net/hamradio/6pack.c
@@ -683,14 +683,14 @@ static void sixpack_close(struct tty_struct *tty)
 	if (!atomic_dec_and_test(&sp->refcnt))
 		down(&sp->dead_sem);
 
-	unregister_netdev(sp->dev);
-
-	del_timer(&sp->tx_t);
-	del_timer(&sp->resync_t);
+	del_timer_sync(&sp->tx_t);
+	del_timer_sync(&sp->resync_t);
 
 	/* Free all 6pack frame buffers. */
 	kfree(sp->rbuff);
 	kfree(sp->xbuff);
+
+	unregister_netdev(sp->dev);
 }
 
 /* Perform I/O control on an active 6pack channel. */