Messages in this thread | | | From | Bartlomiej Zolnierkiewicz <> | Subject | Re: [PATCH] pata_pdc202xx_old: Fix crashes with ATAPI | Date | Tue, 22 Jan 2008 02:25:10 +0100 |
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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
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