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Date:   Wed, 20 Nov 2019 10:12:21 +1100 (AEDT)
From:   Finn Thain <fthain@telegraphics.com.au>
To:     Kars de Jong <jongk@linux-m68k.org>
cc:     "James E.J. Bottomley" <jejb@linux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@oracle.com>,
        Michael Schmitz <schmitzmic@gmail.com>,
        linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] esp_scsi: Clear Transfer Count registers before PIO
 transfers
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On Tue, 19 Nov 2019, I wrote:

> 
> But this is a theoretical problem so far. You may need to use sg_utils 
> to generate a SCSI command like that.
> 
> (For a DMA controller subject to, say, 24-bit boundaries, there are 
> additional ways to end up with short transfers.)
> 

On reflection these probably can't happen in practice. I was being 
over-cautious. So I'll leave this patch out-of-tree until there's a need 
for it (i.e. some driver that uses both DMA and PIO in data phases).

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