Re: [patch 2.5.31] transparent PCI-to-PCI bridges

[Ivan Kokshaysky <ink@jurassic.park.msu.ru>]

On Sat, Aug 31, 2002 at 09:49:14AM -0700, Linus Torvalds wrote:
> 
> On 31 Aug 2002, Alan Cox wrote:
> >
> > Related question while we are on the subject of bridges. I'm trying to
> > work out a clean way to initialize a new subtree of devices given a
> > bridge that suddenely has devices behind it.
> > 
> > This occurs in three cases I know about now 
> > - Easidock cardbus->PCI extender
> > - IBM Thinkpad hot docking bridge
> > - Magma PCI extended split bridge
> 
> pci_do_scan_bus() should do almost everything for you. Pat Mochel had some
> code that made the cardbus driver basically do just this on cardbus
> insertion, you might ask him.

I guess Pat's code has something to do with a resource allocation
(haven't seen it though).
I would play with following if I have the hardware:
{
	pci_do_scan_bus(bus);
	pbus_size_bridges(bus);
	pbus_assign_resources(bus);
}
Obviously, __init qualifiers should be changed to __devinit for pbus_*
and other stuff in setup-bus.c and setup-res.c.

Ivan.