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>
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parent
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@ -1136,7 +1136,7 @@ void __ref __pci_bus_size_bridges(struct pci_bus *bus,
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}
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/* The root bus? */
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if (!bus->self)
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if (pci_is_root_bus(bus))
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return;
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switch (bus->self->class >> 8) {
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