Re: AMD 8131 and MSI quirk

[Matthew Wilcox]

On Thu, Oct 27, 2005 at 08:08:45AM -0700, Roland Dreier wrote:
>     Matthew> Perhaps the right thing to do is to change pad2 (in
>     Matthew> struct pci_bus) to bus_flags and make bit 0
>     Matthew> PCI_BRIDGE_FLAGS_NO_MSI ?
> 
> Seems reasonable, but I'm still not sure how to implement this.  Where
> does this bit get set and propagated to secondary buses?

We can propagate it to secondary busses in pci_alloc_child_bus().
We inherit parent->ops and parent->sysdata at this point, we can also
inherit parent->whatever_flags_we_like.

Setting it from the quirk is a bit more yucky.  I *think* we're going
to have to walk the PCI tree, given that it's a FIXUP_FINAL.  Maybe it
needs to not be a FIXUP_FINAL ... a FIXUP_HEADER might get it set early
enough for it to propagate through that mechanism.
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