linux-kernel - Re: pata_cs5536: DMI detection of broken PCs

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Message-ID: <20120413170328.65231662@pyramind.ukuu.org.uk>
Date:	Fri, 13 Apr 2012 17:03:28 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Christian Gmeiner <christian.gmeiner@...il.com>
Cc:	linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: pata_cs5536: DMI detection of broken PCs

> 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
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