From 514e7c3963e88bf59518e2ba852c20fe7ca68df4 Mon Sep 17 00:00:00 2001
From: phk <phk@FreeBSD.org>
Date: Tue, 13 Jul 1999 08:15:22 +0000
Subject: dont allow open if no device was found.

---
 sys/pci/xrpu.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'sys/pci/xrpu.c')

diff --git a/sys/pci/xrpu.c b/sys/pci/xrpu.c
index 8bc3bca..839263c 100644
--- a/sys/pci/xrpu.c
+++ b/sys/pci/xrpu.c
@@ -6,7 +6,7 @@
  * this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
  * ----------------------------------------------------------------------------
  *
- * $Id: xrpu.c,v 1.13 1999/06/22 10:31:30 phk Exp $
+ * $Id: xrpu.c,v 1.14 1999/07/03 08:23:00 phk Exp $
  *
  * A very simple device driver for PCI cards based on Xilinx 6200 series
  * FPGA/RPU devices.  Current Functionality is to allow you to open and
@@ -128,6 +128,10 @@ xrpu_poll_pps(struct timecounter *tc)
 static int
 xrpu_open(dev_t dev, int flag, int mode, struct proc *p)
 {
+	struct softc *sc = softc[dev2unit(dev)];
+
+	if (!sc)
+		return (ENXIO);
 	return (0);
 }
 
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