linux-kernel - Re: [Regression] 2.6.25-rc4-git3: Handling of audio CDs broken on pata

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Date:	Mon, 10 Mar 2008 22:36:30 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Tejun Heo <htejun@...il.com>
Cc:	Andrey Borzenkov <arvidjaar@...l.ru>, linux-kernel@...r.kernel.org,
	linux-ide@...r.kernel.org
Subject: Re: [Regression] 2.6.25-rc4-git3: Handling of audio CDs broken on pata_ali

On Monday, 10 of March 2008, Tejun Heo wrote:
> Tejun Heo wrote:
> > Tejun Heo wrote:
> >> Rafael J. Wysocki wrote:
> >>>>> where ata1 is:
> >>>>>
> >>>>> scsi0 : pata_ali
> >>>>> scsi1 : pata_ali
> >>>> Oh, is it only with audio CDs? I am unable to use DVD on pata_ali in DMA at
> >>>> all. Have you tried to disable ATAPI DMA (libata.dma=1)?
> >>> Data CDs seem to work fine here.
> >> * Does booting into runlevel 1, putting in an audio cd and running
> >> cdparanoia give the same result?
> >>
> >> * Does setting module parameter libata.force to "1.00:pio4" make any
> >> difference?
> > 
> > Oh, never mind.  I have a hunch.  I'll report back in a while.
> > 
> 
> Does the attached patch fix the problem?

Yes, it does.  Please push upstream.

Thanks,
Rafael
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