--- xinu/sys/signaln.c	2018/04/24 17:39:04	1.1.1.1
+++ xinu/sys/signaln.c	2018/04/24 17:40:06	1.1.1.2
@@ -15,11 +15,13 @@ SYSCALL signaln(sem,count)
 	int	count;
 {
 	struct	sentry	*sptr;
-	PStype	ps;
 
-	disable(ps);
+#ifdef	DEBUG
+	dotrace("sign", &sem, 2);
+#endif
+	disable();
 	if (isbadsem(sem) || semaph[sem].sstate==SFREE || count<=0) {
-		restore(ps);
+		restore();
 		return(SYSERR);
 	}
 	sptr = &semaph[sem];
@@ -27,6 +29,6 @@ SYSCALL signaln(sem,count)
 		if ((sptr->semcnt++) < 0)
 			ready(getfirst(sptr->sqhead), RESCHNO);
 	resched();
-	restore(ps);
+	restore();
 	return(OK);
 }