linux-kernel - Re: 2.6.25-mm1: Failing to probe IDE interface

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Date:	Tue, 29 Apr 2008 16:49:58 +0100
From:	Mel Gorman <mel@....ul.ie>
To:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: 2.6.25-mm1: Failing to probe IDE interface

On (29/04/08 10:43), Mel Gorman didst pronounce:
> On (28/04/08 20:44), Bartlomiej Zolnierkiewicz didst pronounce:
> > 
> > Hi,
> > 
> > On Monday 28 April 2008, Mel Gorman wrote:
> > > An old T21 is failing to boot and the relevant message appears to be
> > > 
> > > [    1.929536] Probing IDE interface ide0...
> > > [   36.939317] ide0: Wait for ready failed before probe !
> > > [   37.502676] ide0: DISABLED, NO IRQ
> > > [   37.506356] ide0: failed to initialize IDE interface
> > > 
> > > The owner of ide-mm-ide-add-struct-ide_io_ports-take-2.patch with the
> > > "DISABLED, NO IRQ" message is cc'd. I've attached the config, full boot log
> > > and lspci -v for the machine in question. I'll start reverting some of the
> > > these patches to see if ide-mm-ide-add-struct-ide_io_ports-take-2.patch
> > > is really the culprit.
> > 
> > Please try reverting ide-fix-hwif-s-initialization.patch first - it has
> > already been dropped from IDE tree because people were reporting problems
> > similar to the one encountered by you.
> > 
> 
> Thanks.
> 
> I reverted this patch and ide-mm-ide-make-ide_hwifs-static.patch (for compile
> breakage reasons). It's better but still fails to find the IDE device.

Interestingly, bisection firmly blames this patch and QEMU boots with the two
patches reverted but fails with them applied so that patch does cause problems.
The failure on the laptop must be depending on some follow-on patch. I tried
a hatchet-job revert of the IDE patches between IDE-START and IDE-END in
the series file and it similarly fails to probe the IDE devices. So either
I made a mess of the reverts (strong possibility) or there is more than one
problem patch.

-- 
Mel Gorman
Part-time Phd Student                          Linux Technology Center
University of Limerick                         IBM Dublin Software Lab
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