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| author | msmith <msmith@FreeBSD.org> | 2000-10-09 00:43:45 +0000 |
|---|---|---|
| committer | msmith <msmith@FreeBSD.org> | 2000-10-09 00:43:45 +0000 |
| commit | 3f7f525479e7bd8ecf84de7d05ca0644d7807a68 (patch) | |
| tree | fed8a979fa73e52492b3022148b456a1d4a43bf5 /sys/dev/pci | |
| parent | 12c1416afe977a7848d0bd1aab42981d69b6933a (diff) | |
| download | FreeBSD-src-3f7f525479e7bd8ecf84de7d05ca0644d7807a68.zip FreeBSD-src-3f7f525479e7bd8ecf84de7d05ca0644d7807a68.tar.gz | |
Validate the PCI bus number that we fetch from our parent, since there's no
guarantee that everything attached to *it* is a PCI bus.
Diffstat (limited to 'sys/dev/pci')
| -rw-r--r-- | sys/dev/pci/pci.c | 7 |
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"); |
