linux-kernel - Re: [PATCH 1/2] [PCI] Check that MWI bit really did get set

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Message-Id: <20061015104738.28a9709d.akpm@osdl.org>
Date:	Sun, 15 Oct 2006 10:47:38 -0700
From:	Andrew Morton <akpm@...l.org>
To:	Matthew Wilcox <matthew@....cx>
Cc:	Val Henson <val_henson@...ux.intel.com>,
	Greg Kroah-Hartman <gregkh@...e.de>, netdev@...r.kernel.org,
	linux-pci@...ey.karlin.mff.cuni.cz, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] [PCI] Check that MWI bit really did get set

On Sun, 15 Oct 2006 07:54:41 -0600
Matthew Wilcox <matthew@....cx> wrote:

> On Sat, Oct 14, 2006 at 11:53:59PM -0700, Andrew Morton wrote:
> > It seems to have stopped happening.  I don't know why.
> 
> Argh.  Possibly a mistake during the bisect procedure?

I don't think so - I spent a lot of time fiddling with that because it was
so bizarre to have two patches each of which caused the same failure.

Something has changed, perhaps config: the failure is a bit different now
(happens earlier).

> > gregkh-pci-pci-prevent-user-config-space-access-during-power-state-transitions.patch
> > still breaks suspend though: http://userweb.kernel.org/~akpm/s5000349.jpg
> 
> I believe that; I was going to generate a new patch for that yesterday,
> but got distracted trying to debug your other problem.  I'll put out a
> new version of that patch later today.

ok..  Add plenty of debug printks to it.
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