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PCI: Use pci_is_root_bus() to check for root bus 

In __pci_bus_size_bridges() we check whether a bus is a root bus by testing
bus->self.  As indicated by commit 79af72d7 ("PCI: pci_is_root_bus
helper"), bus->self == NULL is not a proper way to check for a root bus.
One issue is that "virtual" buses added for SR-IOV (via virtfn_add_bus())
have bus->self == NULL but are not root buses.

This patch changes it to pci_is_root_bus() to check whether it is a root
bus.

[bhelgaas: changelog]
Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Wei Yang 2013-09-06 09:45:56 +08:00 committed by Bjorn Helgaas
parent 115e3bc5e2
commit 2ba29e270e
1 changed files with 1 additions and 1 deletions
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2
drivers/pci/setup-bus.c
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@ -1136,7 +1136,7 @@ void __ref __pci_bus_size_bridges(struct pci_bus *bus,
}
/* The root bus? */
if (!bus->self)
if (pci_is_root_bus(bus))
return;
switch (bus->self->class >> 8) {