--- xinu/sys/preceive.c	2018/04/24 17:39:04	1.1
+++ xinu/sys/preceive.c	2018/04/24 17:39:49	1.1.1.2
@@ -12,19 +12,21 @@
 SYSCALL	preceive(portid)
 int portid;
 {
-	PStype	ps;
 	struct	pt	*ptptr;
 	int	seq;
-	int	msg;
+	WORD	msg;
 	struct	ptnode	*nxtnode;
 
-	disable(ps);
+#ifdef	DEBUG
+	dotrace("preceive", &portid, 1);
+#endif
+	disable();
 	if ( isbadport(portid) ||
 #ifdef	MEMMARK
 	     unmarked(ptmark) ||
 #endif
 	     (ptptr= &ports[portid])->ptstate != PTALLOC ) {
-		restore(ps);
+		restore();
 		return(SYSERR);
 	}
 
@@ -33,7 +35,7 @@ int portid;
 	seq = ptptr->ptseq;
 	if (wait(ptptr->ptrsem) == SYSERR || ptptr->ptstate != PTALLOC
 	    || ptptr->ptseq != seq) {
-		restore(ps);
+		restore();
 		return(SYSERR);
 	}
 
@@ -42,12 +44,12 @@ int portid;
 	nxtnode = ptptr->pthead;
 	msg = nxtnode->ptmsg;
 	if (ptptr->pthead == ptptr->pttail)	/* delete last item	*/
-		ptptr->pthead = ptptr->pttail = (struct ptnode *) NULL;
+		ptptr->pthead = ptptr->pttail = (struct ptnode *)NULL;
 	else
 		ptptr->pthead = nxtnode->ptnext;
 	nxtnode->ptnext = ptfree;		/* return to free list	*/
 	ptfree = nxtnode;
 	signal(ptptr->ptssem);
-	restore(ps);
+	restore();
 	return(msg);
 }