The pci_bus_to_host() inline function used on ppc64 to find the pci_contoller
structure a give pci_bus resides on used to contain bogus tree walking code,
which fortunately ended up never beeing necessary since "sysdata" always points
to a device_node structure that has the proper "phb" field (even if it is not
the device-node of the actual P2P, which happens during boot).
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>