Date: Fri, 16 Jan 2004 15:52:36 -0500
From: Alan Cox <alan@redhat.com>
To: John Bradford <john@grabjohn.com>
Cc: Jonathan Kamens <jik@kamens.brookline.ma.us>, linux-kernel@vger.kernel.org,
       alan@redhat.com
Subject: Re: Updated on UDMA BadCRC errors + subsequent problems (was: Is it safe to ignore UDMA BadCRC errors?)
Message-ID: <20040116205236.GI9648@devserv.devel.redhat.com>
References: <16368.20794.147453.255239@jik.kamens.brookline.ma.us> <16389.63781.783923.930112@jik.kamens.brookline.ma.us> <16391.24288.194579.471295@jik.kamens.brookline.ma.us> <200401160747.i0G7ln1I000368@81-2-122-30.bradfords.org.uk> <16392.734.505550.6731@jik.kamens.brookline.ma.us> <200401161546.i0GFkkpa002053@81-2-122-30.bradfords.org.uk> <16392.2027.90408.850335@jik.kamens.brookline.ma.us> <200401161648.i0GGmYlJ002181@81-2-122-30.bradfords.org.uk>
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On Fri, Jan 16, 2004 at 04:48:34PM +0000, John Bradford wrote:
> I _think_ that UDMA CRC checking is only done on data transfers, not
> commands.  I've CC'ed Alan in the hope of getting some confirmation on
> this.  Maybe a command being corrupted on the wire could theoretically
> cause that error.

You are correct for PATA but the situation there is very very unlikely,
let alone for it to be repeatable

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