1 files changed, 1 insertions, 3 deletions

diff --git a/drivers/isdn/hisax/st5481_d.c b/drivers/isdn/hisax/st5481_d.c
index 941f7022ada1..493dc94992e5 100644
--- a/drivers/isdn/hisax/st5481_d.c
+++ b/drivers/isdn/hisax/st5481_d.c
@@ -596,9 +596,7 @@ void st5481_d_l2l1(struct hisax_if *hisax_d_if, int pr, void *arg)
                 break;
         case PH_DATA | REQUEST:
                 DBG(2, "PH_DATA REQUEST len %d", skb->len);
-                if (adapter->d_out.tx_skb)
-                        BUG();
-
+                BUG_ON(adapter->d_out.tx_skb);
                 adapter->d_out.tx_skb = skb;
                 FsmEvent(&adapter->d_out.fsm, EV_DOUT_START_XMIT, NULL);
                 break;