radeon: RFC speed cap detection on ppc64

Alan Cox alan at lxorguk.ukuu.org.uk
Mon Oct 22 08:44:44 PDT 2012

> That (walking all parent nodes) is probably the safest thing to do.  I'm 
> not sure whether it's optimal.  It would likely depend on whether you 
> can meaningfully have a bridge that's faster on the downstream side than 
> on the upstream.

This is architecture goo at heart - would this be better as a helper in
the PCI and arch PCI code ?


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