diff --git a/drivers/isdn/mISDN/tei.c b/drivers/isdn/mISDN/tei.c
index 1a824e7..5c43d19 100644
--- a/drivers/isdn/mISDN/tei.c
+++ b/drivers/isdn/mISDN/tei.c
@@ -1287,7 +1287,7 @@
 	if (!mgr)
 		return -ENOMEM;
 	INIT_LIST_HEAD(&mgr->layer2);
-	mgr->lock = __RW_LOCK_UNLOCKED(mgr->lock);
+	rwlock_init(&mgr->lock);
 	skb_queue_head_init(&mgr->sendq);
 	mgr->nextid = 1;
 	mgr->lastid = MISDN_ID_NONE;