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Date: Sat, 26 Jan 2002 22:41:26 -0800
From: Andrew Morton <akpm@zip.com.au>
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To: "Kevin P. Fleming" <kevin@labsysgrp.com>,
        lkml <linux-kernel@vger.kernel.org>, Grant <gcoady@bendigo.net.au>
Subject: Re: [CFT] Bus mastering support for IDE CDROM audio
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Andrew Morton wrote:
> 
> "Kevin P. Fleming" wrote:
> >
> > When reading from the N drive, get lots of "cdrom_pc_intr: read too
> > little data 0 < 2352",
> 
> OK, thanks Kevin (Dan, Kristian, Grant..)
> 
> Seems that some devices simply terminate their DMA in a normal
> manner, report no errors and don't tell us how much data they
> transferred.  From my reading of the ATA spec, they're allowed
> to do that - they only need to report the transfer byte count
> in PIO mode.
> 

There's an updated patch at

	http://www.zip.com.au/~akpm/linux/2.4/2.4.18-pre7/ide-akpm.patch

It now supports multi-frame transfers and should fix the problem
which you observed.

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