From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
Subject: Re: pata_cs5536: DMI detection of broken PCs
Date: Fri, 13 Apr 2012 17:03:28 +0100
Message-ID: <20120413170328.65231662@pyramind.ukuu.org.uk>
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To: Christian Gmeiner <christian.gmeiner@gmail.com>
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> Is there a way to backlist the old devices to not use UDMA at all? DMI
> would be a good idea for
> detecting old devices. Is something like this possible?

You can implement a filter method. Presumably the data sheet and errata
tell you what the problem is and how to detect it. That will be your
starting point.

Alan