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SubjectRe: [regression] pciehp hang on hp ia64 rx6600
Alex Chiang wrote:
> Hi Mark, Kristin,
>
> On my hp ia64 rx6600, 'modprobe pciehp' causes lockups and a
> system hang on 2.6.25-rc4. My system often hangs when only pciehp
> is loaded and my console is sitting idle, but I can accelerate
> the hang 100% of the time by immediately doing a 'modprobe
> acpiphp' right afterwards.
>
> I have bisected the hang down to this commit:
>
> 0a3c33d77ff7ad5b988997536a8f09c49e35ad20 is first bad commit
> commit 0a3c33d77ff7ad5b988997536a8f09c49e35ad20
> Author: Mark Lord <lkml@rtr.ca>
> Date: Wed Nov 28 15:11:28 2007 -0800
>
> PCIE: fix PCIe Hotplug so that it works with ExpressCard slots on Dell notebooks (and others?) in conjunction with modparam of pciehp_force=1.
..

In this case, the bisection is probably not perfect,
because that original patch had a couple of bugs that
were fixed by a subsequent follow-up patch.

It is all rather fuzzy right now, because this work was all completed
at the merge window for the *previous* kernel, but has now sat bit-rotting
for nearly 6 months since I last looked at it.

That said, I'm building the latest 2.6.25-rc* to retest with here,
and hopefully we can work this out without much more fuss.

Cheers
--
Mark Lord
Real-Time Remedies Inc.
mlord@pobox.com


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