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| author | Randy Dunlap <randy.dunlap@oracle.com> | 2007-06-28 16:04:21 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-07-11 16:02:13 -0700 |
| commit | 5463d9f0f323123d96989d318ac9c537158ad0a5 (patch) | |
| tree | a6706e7f0e9ee3f0a5c14f123536dc51a3b2e111 /drivers/pci/search.c | |
| parent | 0bbd6424c55f0ab9e7fcd6a851bc49e265259ff5 (diff) | |
| download | lwn-5463d9f0f323123d96989d318ac9c537158ad0a5.tar.gz lwn-5463d9f0f323123d96989d318ac9c537158ad0a5.zip | |
PCI: limit pci_get_bus_and_slot to domain 0
Limit pci_get_bus_and_slot() to domain (segment) 0 since domain is not
specified in the function call and defaulting to domain 0 is the only
reasonable thing to do (rather than returning a device from some other
unknown domain).
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/pci/search.c')
| -rw-r--r-- | drivers/pci/search.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/pci/search.c b/drivers/pci/search.c index c13232435dc0..9f7090fa8771 100644 --- a/drivers/pci/search.c +++ b/drivers/pci/search.c @@ -139,12 +139,14 @@ struct pci_dev * pci_get_slot(struct pci_bus *bus, unsigned int devfn) } /** - * pci_get_bus_and_slot - locate PCI device from a given PCI slot + * pci_get_bus_and_slot - locate PCI device from a given PCI bus & slot * @bus: number of PCI bus on which desired PCI device resides * @devfn: encodes number of PCI slot in which the desired PCI * device resides and the logical device number within that slot * in case of multi-function devices. * + * Note: the bus/slot search is limited to PCI domain (segment) 0. + * * Given a PCI bus and slot/function number, the desired PCI device * is located in system global list of PCI devices. If the device * is found, a pointer to its data structure is returned. If no @@ -157,7 +159,8 @@ struct pci_dev * pci_get_bus_and_slot(unsigned int bus, unsigned int devfn) struct pci_dev *dev = NULL; while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) { - if (dev->bus->number == bus && dev->devfn == devfn) + if (pci_domain_nr(dev->bus) == 0 && + (dev->bus->number == bus && dev->devfn == devfn)) return dev; } return NULL; |