--- unicorn-0.3.0/unicorn_atm/unicorn_atmdrv.c	Thu May 23 10:33:38 2002
+++ unicorn-0.3.0-patched/unicorn_atm/unicorn_atmdrv.c	Fri May 24 11:26:28 2002
@@ -338,6 +339,9 @@
 	T_MswCtrl msw_ctrl;
 	AMSW_ModemState modemstate=C_AMSW_IDLE;
 
+	if (drv->ep == NULL)
+		return C_AMSW_IDLE;
+
 	ASSERT(drv->ep->msw_control != NULL);
 
 	msw_ctrl.code = MSW_CTL_GET_STATE;