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From: Borislav Petkov <petkov@uni-muenster.de>
To: Jens Axboe <axboe@suse.de>
Subject: Re: Fw: Re: 2.6.9-rc2-mm4
Date: Fri, 1 Oct 2004 11:54:32 +0200
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Cc: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>,
       Andrew Morton <akpm@osdl.org>, Alan Cox <alan@lxorguk.ukuu.org.uk>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On Friday 01 October 2004 11:18, Jens Axboe wrote:
> On Fri, Oct 01 2004, Bartlomiej Zolnierkiewicz wrote:
> > On Thursday 30 September 2004 23:46, Borislav Petkov wrote:
> > > On Thursday 30 September 2004 18:25, Bartlomiej Zolnierkiewicz wrote:
> > > > On Thursday 30 September 2004 17:32, Borislav Petkov wrote:
> > > > > On Thursday 30 September 2004 14:52, Bartlomiej Zolnierkiewicz 
wrote:
> > > > > > On Thursday 30 September 2004 06:46, Andrew Morton wrote:
> > > > > > > ide broke :(   Maybe Bart's bk tree?
> > > > > >
> > > > > > no, disk works just fine ;)  If it is my tree I will happilly fix
> > > > > > it.
> > > > > >
> > > > > > Borislav, could you apply only these patches from -mm4 and
> > > > > > retest?
> > > > > >
> > > > > > linus.patch
> > > > > > bk-ide-dev.patch
> > > > > >
> > > > > > > Begin forwarded message:
> > > > > > >
> > > > > > > Date: Wed, 29 Sep 2004 12:43:35 +0200
> > > > > > > From: Borislav Petkov <petkov@uni-muenster.de>
> > > > > > > To: Andrew Morton <akpm@osdl.org>
> > > > > > > Cc: linux-kernel@vger.kernel.org
> > > > > > > Subject: Re: 2.6.9-rc2-mm4
> > > > > > >
> > > > > > >
> > > > > > > <snip>
> > > > > > >
> > > > > > > Hello,
> > > > > > >  I've already posted about problems with audio extraction but
> > > > > > > it went unnoticed. Here's a recount: When I attempt to read an
> > > > > > > audio cd into wavs with cdda2wav, the process starts but after
> > > > > > > a while the completion meter freezes and klogd says "hdc: lost
> > > > > > > interrupt" and cdda2wav hangs itself. Disabling DMA doesn't
> > > > > > > help as well as the boot option "pci=routeirq" too. Older
> > > > > > > kernels like 2.6.7 do not show such behavior and there audio
> > > > > > > extraction runs fine. Sysinfo attached.
> > > > > > >
> > > > > > > Regards,
> > > > > > > Boris.
> > > > >
> > > > > Hi people,
> > > > >
> > > > >  well, I've applied the above patches but no change - same "hdc:
> > > > > lost interrupt" message. 2.6.9-rc3 behaves the same, as expected.
> > > >
> > > > Well, if 2.6.9-rc3 fails then it is not my tree...
> > > >
> > > > Please find kernel version which introduces this bug.
> > >
> > > Just compiled 2.6.8.1 and tested audio extraction. The bug is there.
> > > After that, reran the test with 2.6.7. Everything went fine. So it must
> > > have been between 2.6.7 and 2.6.8.1 when the bug got introduced. Any
> > > additional debugging options in the ATA/IDE cd driver i could turn on
> > > so that I could get more verbose messages while executing cdda2wav?
> >
> > I'm not aware of any.  Jens?
>
> I don't see any changes that could impact this from 2.6.7 to 2.6.8. We
> tightened the dma alignment (from 4 to 32 bytes), but should not cause
> problems going in that direction. Unless the other path is buggy, of
> course.
>
> Does dma make a difference? Please try 2.6.9-rc3 as well.

Sorry guys,

still a no go. Tested today 2.6.8.1 and 2.6.9-rc3 both with DMA on/off. same 
lost interrupt message. How about a hardware problem? Maybe the cd-drive is 
showing some hidden "features" under certain conditions, although it is 
highly unlikely since 2.6.7 runs fine. strange...

Boris.
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