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-rw-r--r--sys/dev/pci/pci.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/sys/dev/pci/pci.c b/sys/dev/pci/pci.c
index 07c8cd8..c0a4bb8 100644
--- a/sys/dev/pci/pci.c
+++ b/sys/dev/pci/pci.c
@@ -1060,7 +1060,7 @@ pci_add_children(device_t dev, int busno)
static int
pci_probe(device_t dev)
{
- static int once;
+ static int once, busno;
device_set_desc(dev, "PCI bus");
@@ -1073,7 +1073,10 @@ pci_probe(device_t dev)
* number to decide what bus we are probing. We ask the parent
* pcib what our bus number is.
*/
- pci_add_children(dev, pcib_get_bus(dev));
+ busno = pcib_get_bus(dev);
+ if (busno < 0)
+ return ENXIO;
+ pci_add_children(dev, busno);
if (!once) {
make_dev(&pcicdev, 0, UID_ROOT, GID_WHEEL, 0644, "pci");
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