--- src/sys/bus/cam/scsi/scsi_target.c	2008/05/18 20:30:20	1.19
+++ src/sys/bus/cam/scsi/scsi_target.c	2008/07/18 00:07:23	1.20
@@ -374,7 +374,7 @@ targreadfilt(struct knote *kn, long hint
 	int	retval;
 
 	softc = (struct targ_softc *)kn->kn_hook;
-	cam_periph_unlock(softc->periph);
+	cam_periph_lock(softc->periph);
 	retval = !TAILQ_EMPTY(&softc->user_ccb_queue) ||
 		 !TAILQ_EMPTY(&softc->abort_queue);
 	cam_periph_unlock(softc->periph);