From 21717110bad675b1994988c1ddcf464595861ede Mon Sep 17 00:00:00 2001
From: jonathan <jonathan@NetBSD.org>
Date: Sat, 19 Jul 1997 12:00:10 +0000
Subject: [PATCH] Raise spl to spltty() in polled console input routine
 dtopKBDGetc(), to ensure polled console I/O really is polled.

From Michael L. Hitch <mhitch@lightning.oscs.montana.edu>.
---
 sys/arch/pmax/dev/dtop.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/sys/arch/pmax/dev/dtop.c b/sys/arch/pmax/dev/dtop.c
index e7e8ca414b9e..be41e1ca85b2 100644
--- a/sys/arch/pmax/dev/dtop.c
+++ b/sys/arch/pmax/dev/dtop.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: dtop.c,v 1.24 1997/06/22 07:42:29 jonathan Exp $	*/
+/*	$NetBSD: dtop.c,v 1.25 1997/07/19 12:00:10 jonathan Exp $	*/
 
 /*-
  * Copyright (c) 1992, 1993
@@ -626,8 +626,10 @@ dtopKBDGetc(dev)
 {
 	register int c;
 	dtop_softc_t dtop;
+	int s;
 
 	dtop = dtop_cd.cd_devs[0];
+	s = spltty();
 again:
 	c = -1;
 
@@ -648,7 +650,11 @@ again:
 					&ds->status, &msg,
 					DTOP_EVENT_RECEIVE_PACKET, -1);
 
-			if (c > 0) return c;
+
+			if (c > 0) {
+				splx(s);
+				return c;
+			}
 
 			c = -1;
 		    }
@@ -660,6 +666,7 @@ again:
 		goto again;
 	}
 
+	splx(s);
 	return c;
 }