[src/netbsd-1-4]: src/sys/dev Pull up revision 1.33 (requested by he):

[he <he%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/5a10ccc3793d
branches:  netbsd-1-4
changeset: 469648:5a10ccc3793d
user:      he <he%NetBSD.org@localhost>
date:      Tue Oct 26 21:12:00 1999 +0000

description:
Pull up revision 1.33 (requested by he):
  Catch a console configuration error.  Instead of jumping through
  cdevsw indexed on major(NODEV), call panic, fixing PR#8690.

diffstat:

 sys/dev/cons.c |  11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)

diffs (25 lines):

diff -r 597cde02165b -r 5a10ccc3793d sys/dev/cons.c
--- a/sys/dev/cons.c    Tue Oct 26 20:40:38 1999 +0000
+++ b/sys/dev/cons.c    Tue Oct 26 21:12:00 1999 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: cons.c,v 1.32 1996/09/07 12:40:54 mycroft Exp $        */
+/*     $NetBSD: cons.c,v 1.32.22.1 1999/10/26 21:12:00 he Exp $        */
 
 /*
  * Copyright (c) 1988 University of Utah.
@@ -75,6 +75,15 @@
         * open() calls.
         */
        dev = cn_tab->cn_dev;
+       if (dev == NODEV) {
+               /*
+                * This is most likely an error in the console attach
+                * code. Panicing looks better than jumping into nowhere
+                * through cdevsw below....
+                */
+               panic("cnopen: cn_tab->cn_dev == NODEV\n");
+       }
+
        if (cn_devvp == NULLVP) {
                /* try to get a reference on its vnode, but fail silently */
                cdevvp(dev, &cn_devvp);