Commits
Bjorn Helgaas committed 77a0dfcd8a4
PCI: Document reason for using pci_is_root_bus()
Some code assumes "bus->self == NULL" means the bus is a root bus. This
adds a comment explaining why this is incorrect ("virtual" buses added for
SR-IOV have "bus->self == NULL" but are not root buses).
No functional change.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>