[patch 0/4] RFC: PCI: consolidate several pcibios_enable_resources() implementations

[Grant Grundler]

On Mon, Feb 18, 2008 at 09:39:52PM -0700, Bjorn Helgaas wrote:
> There are many implementations of pcibios_enable_resources() that differ
> in minor ways that look more like bugs than architectural differences.
> This patch series consolidates most of them to use the x86 version.
> 
> This series is for discussion only at this point.  I'm interested in
> feedback about whether any of the differences are "real" and need to
> be preserved.
> 
> ARM and PA-RISC, in particular, have interesting differences:
>     - ARM always enables bridge devices, which no other arch does
>     - PA-RISC always turns on SERR and PARITY, which no other arch does
> 
> Should other arches do the same thing, or are these somehow related to
> ARM and PA-RISC architecture?

My impression was most x86 BIOS's did NOT turn on SERR/PERR when I added
that code to parisc-linux port (2000 or 2001 so) . HPUX was turning on
SERR/PERR and so I was comfortable the HW was stable and it not crash
under normal use unless something was really broken.

There is certainly nothing architectural specific about SERR/PERR.
I felt (at the time) this is more of a case of "if it's not reported to the
user, we won't get blamed for it not working well."

hth,
grant