From d444cd5f28a2ec5417c571ca6244ede6dc3e7b22 Mon Sep 17 00:00:00 2001
From: Warner Losh <imp@FreeBSD.org>
Date: Sat, 23 Aug 2008 15:57:43 +0000
Subject: [PATCH] When device_get_children returns an error, ignore that bus'
 children.

---
 sys/dev/agp/agp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sys/dev/agp/agp.c b/sys/dev/agp/agp.c
index baff9a56a076..1dd8b3a547de 100644
--- a/sys/dev/agp/agp.c
+++ b/sys/dev/agp/agp.c
@@ -118,7 +118,8 @@ agp_find_display(void)
 		bus = devclass_get_device(pci, busnum);
 		if (!bus)
 			continue;
-		device_get_children(bus, &kids, &numkids);
+		if (device_get_children(bus, &kids, &numkids) != 0)
+			continue;
 		for (i = 0; i < numkids; i++) {
 			dev = kids[i];
 			if (pci_get_class(dev) == PCIC_DISPLAY