| commit | 77a0dfcd8a4d9a93a21c8be56eaeb65cd69b351d | [log] [tgz] |
|---|---|---|
| author | Bjorn Helgaas <bhelgaas@google.com> | Tue Sep 24 15:14:57 2013 -0600 |
| committer | Bjorn Helgaas <bhelgaas@google.com> | Wed Sep 25 15:43:58 2013 -0600 |
| tree | 78fc61e77d3976560185ac61c7944755a7009502 | |
| parent | 2ba29e270e977b213a7d58ae1152c23a1c3074a3 [diff] |
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>