linux-kernel - Re: [PATCH 02/20] ata_piix: unify code for programming PIO and MWDMA timings

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Message-ID: <20110221120015.22cc3fb2@lxorguk.ukuu.org.uk>
Date:	Mon, 21 Feb 2011 12:00:15 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Sergei Shtylyov <sshtylyov@...sta.com>
Cc:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 02/20] ata_piix: unify code for programming PIO and
 MWDMA timings

> > Don't think they say anything on this matter but I can't imagine that IORDY
> > matters for DMA.
> 
>     What it says is that IORDY enable bit has no effect when the fast timing 
> bit is cleared. That's from ICH IDE PRM (29860004.pdf).

Ok thats the detail I missed - cool.
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