diff options
| author | Trent Piepho <xyzzy@speakeasy.org> | 2009-03-20 14:56:00 -0600 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-03-20 14:56:45 -0700 |
| commit | 90bdb3117f4209baa6d712b126f0e7791b24dc3f (patch) | |
| tree | 5c2ca7ae062bc8aef2ce0ceb7f49e78b0329fb8a | |
| parent | 79af72d716cf1bb13b175429cf181a6c4d063ee8 (diff) | |
PCI: don't scan existing devices
pci_scan_single_device is supposed to add newly discovered
devices to pci_bus->devices, but doesn't check to see if the
device has already been added. This can cause problems if we ever
want to use this interface to rescan the PCI bus.
If the device is already added, just return it.
Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
| -rw-r--r-- | drivers/pci/probe.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 943c49a7842..140b9deb482 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -1019,6 +1019,12 @@ struct pci_dev *__ref pci_scan_single_device(struct pci_bus *bus, int devfn) { struct pci_dev *dev; + dev = pci_get_slot(bus, devfn); + if (dev) { + pci_dev_put(dev); + return dev; + } + dev = pci_scan_device(bus, devfn); if (!dev) return NULL; |