linux-kernel - Re: [PATCH] pata_pdc202xx_old: Fix crashes with ATAPI

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Date:	Tue, 22 Jan 2008 00:00:34 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
Cc:	jeff@...zik.org, akpm@...l.org, torvalds@...l.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] pata_pdc202xx_old: Fix crashes with ATAPI

> 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.

> > 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.

Alan
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