netxen: fix link event handling

Firmware starting 4.0.402 started supporting link events, disable
it for older firmwares.

Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/netxen/netxen_nic_ethtool.c b/drivers/net/netxen/netxen_nic_ethtool.c
index a452b2f..e16ea46 100644
--- a/drivers/net/netxen/netxen_nic_ethtool.c
+++ b/drivers/net/netxen/netxen_nic_ethtool.c
@@ -247,6 +247,7 @@
 		case LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN:
 		case LINKEVENT_MODULE_TWINAX:
 			ecmd->port = PORT_TP;
+			break;
 		default:
 			ecmd->port = -1;
 		}