From a9a95b3c3aa3e96452e38fbe3d359a59f25b98ec Mon Sep 17 00:00:00 2001
From: Akito Fujita <akito@ucbvax.Berkeley.EDU>
Date: Wed, 20 Jan 1993 17:13:05 -0800
Subject: [PATCH] added BM board checking

SCCS-vsn: sys/luna68k/stand/bmc.c 7.2
---
 usr/src/sys/luna68k/stand/bmc.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/usr/src/sys/luna68k/stand/bmc.c b/usr/src/sys/luna68k/stand/bmc.c
index fa8f001133..15514261aa 100644
--- a/usr/src/sys/luna68k/stand/bmc.c
+++ b/usr/src/sys/luna68k/stand/bmc.c
@@ -8,7 +8,7 @@
  *
  * %sccs.include.redist.c%
  *
- *	@(#)bmc.c	7.1 (Berkeley) %G%
+ *	@(#)bmc.c	7.2 (Berkeley) %G%
  */
 
 /*
@@ -22,6 +22,8 @@
 #include <luna68k/stand/preset.h>
 
 extern	int dipsw1;
+extern	int nplane;
+
 extern	struct rcvbuf	rcvbuf[];
 
 bmcintr()
@@ -41,6 +43,11 @@ bmccnprobe(cp)
 		return;
 	}
 
+	if (nplane == 0) {
+		cp->cn_pri = CN_DEAD;
+		return;
+	}
+
 	/* initialize required fields */
 	cp->cn_dev = 1;
 	cp->cn_tp  = 0;
-- 
2.20.1