From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: jeff@garzik.org, akpm@osdl.org, torvalds@osdl.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] pata_pdc202xx_old: Fix crashes with ATAPI
Date: Tue, 22 Jan 2008 02:25:10 +0100 [thread overview]
Message-ID: <200801220225.10168.bzolnier@gmail.com> (raw)
In-Reply-To: <20080122000034.3e3f6dbb@lxorguk.ukuu.org.uk>
On Tuesday 22 January 2008, Alan Cox wrote:
> > IDE pdc202xx_old host driver supports ATAPI DMA just fine and in line
> > with the PDC2026x programming guide.
>
> News to me. It didn't last time I tried it the driver selected PIO.
Hmmm...
commit f3d5b34caae393f13a9486036f98c81cac1595c4
Author: Tobias Oed <tobiasoed@hotmail.com>
Date: Tue Oct 3 01:14:17 2006 -0700
[PATCH] Enable cdrom dma access with pdc20265_old
This patch allows me to use dma with my cd/dvd attached to my on board
pdc20265 ide controller
...
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
...
Are you by any chance using PDC20263?
[ PDC2026{5,7} should be fine (unless somebody broke it but then git-bisect
should do the job)... ]
> > > So turn it ATAPI DMA off, these are disk optimised controllers.
> >
> > This is an acceptable workaround for 2.6.24 but it probably just hides
> > some deeper pata_pdc202xx_old or/and libata problem.
>
> Hard to be sure. No docs here for the older ones.
I lack the docs for PDC20263...
Bart
next prev parent reply other threads:[~2008-01-22 1:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-19 15:51 [PATCH] pata_pdc202xx_old: Fix crashes with ATAPI Alan Cox
2008-01-21 23:13 ` Bartlomiej Zolnierkiewicz
2008-01-22 0:00 ` Alan Cox
2008-01-22 1:25 ` Bartlomiej Zolnierkiewicz [this message]
2008-01-22 1:36 ` Alan Cox
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