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

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Message-ID: <46FE464A.4020808@rtr.ca>
Date:	Sat, 29 Sep 2007 08:34:18 -0400
From:	Mark Lord <liml@....ca>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	Jeff Garzik <jgarzik@...ox.com>, 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

Alan Cox wrote:
>>> 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

Alan, you're the expert there (my condolences!).
Can you generate a fix for the PDC202xx to go with this?

Cheers
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