--- src/sys/bus/cam/scsi/scsi_low.c	2008/02/10 00:01:01	1.27
+++ src/sys/bus/cam/scsi/scsi_low.c	2008/05/18 20:30:20	1.28
@@ -781,7 +781,7 @@ scsi_low_attach_cam(struct scsi_low_soft
 	slp->sl_si.sim = cam_sim_alloc(scsi_low_scsi_action_cam,
 				scsi_low_poll_cam,
 				DEVPORT_DEVNAME(slp->sl_dev), slp,
-				DEVPORT_DEVUNIT(slp->sl_dev), 
+				DEVPORT_DEVUNIT(slp->sl_dev), &sim_mplock,
 				slp->sl_openings, tagged_openings, devq);
 	cam_simq_release(devq);
 	if (slp->sl_si.sim == NULL) {