linux-kernel - Re: ata_sff_drain

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Message-ID: <20100818183106.152cb8ca@lxorguk.ukuu.org.uk>
Date:	Wed, 18 Aug 2010 18:31:06 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Pascal GREGIS <pgs@...erway.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: ata_sff_drain_fifo

> Ok. I also noticed that qc->dma_dir=DMA_TO_DEVICE which also prevents the draining.
> I thought it could be a solution for certain problems like mine where the device is busy but the reset doesn't work which brings to a blocking point, but no.

It shouldn't unless there is a specific IDE controller need to drain
data. You could try it and see what it does but I doubt it will help -
but who knows 8)
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