linux-kernel - Re: [PATCH] libata drain fifo on stuck DRQ HSM violation

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Date:	Sat, 29 Sep 2007 07:28:31 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Jeff Garzik <jgarzik@...ox.com>
Cc:	Mark Lord <liml@....ca>, Tejun Heo <htejun@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	michal.k.k.piotrowski@...il.com, bryan@...ores.ca,
	linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org
Subject: Re: [PATCH] libata drain fifo on stuck DRQ HSM violation

> > Why 512 words ?
> 
> Though I have queued Mark's patch to be applied, my gut feeling would 
> lean towards a single DRQ block, rather than 512.

Why not just work from the old IDE code.
> 
> 
> >>  	ata_altstatus(ap);
> >> -	ata_chk_status(ap);
> >> +	ata_drain_fifo(ap, qc);
> > 
> > ap->ops->cleanup();
> > 
> > might be wiser
> 
> If someone needs that, they can override the error handler with their 
> own.  No need for a new op.

PDC202xx needs
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