lkml.org 
[lkml]   [2008]   [Mar]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Reported regressions from 2.6.24)
From
Date

On Wed, 2008-03-26 at 13:14 +0300, Ivan Kokshaysky wrote:
>
> Yeah, it's resource issue for sure. The 00:1e.0 is a transparent
> bridge,
> so I blame commit 8fa5913d54f3b1e09948e6a0db34da887e05ff1f
> (PCI: remove transparent bridge sizing). It's wrong for two reasons:
> - we cannot ignore standard windows of a transparent bridge as they
> always positive decode, so they are potential source of address
> conflicts;
> - that patch just broke whole bridge setup logic in unpredictable way.

The root of the problem is again HW vendors getting wild I think...

Some bridges are fully transparent, some have explicit decode windows
but are also transparent for whatever else and we definitely don't deal
with it.

Ben.




\
 
 \ /
  Last update: 2008-03-26 13:27    [W:0.122 / U:2.344 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site