linux-kernel - Re: SATA DMA problem (sata

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Message-ID: <459278D4.6060005@gmail.com>
Date:	Wed, 27 Dec 2006 22:44:52 +0900
From:	Tejun Heo <htejun@...il.com>
To:	Tejun Heo <htejun@...il.com>
CC:	Jeff Garzik <jgarzik@...ox.com>, Alan <alan@...rguk.ukuu.org.uk>,
	David Shirley <tephra@...il.com>, linux-kernel@...r.kernel.org
Subject: Re: SATA DMA problem (sata_uli)

Tejun Heo wrote:
> I'm just gonna ack Alan's patch.
> 
> * ATA_FLAG_NO_LEGACY is not really used widely (and thus LLDs don't set
> it rigorously).  I think it should be removed once we get initialization
> model right.
> 
> * I'm really reluctant to add more LLD-specific knowledge into libata
> core.  We're already carrying too much due to the current init model
> (libata should initialize host according to probe_ent, so many
> weirdities should be represented in probe_ent in a form libata core
> understands).
> 
> * The idea of clearing simplex for unknown controllers scares the hell
> out of me.  where's mummy...
> 
> So, I'll ask bug reporter of #7590 to test it.

Aieee... uli sata controller doesn't allow simplex bit to be cleared.

http://bugzilla.kernel.org/show_bug.cgi?id=7590#c31

I'll post ATA_FLAG_IGN_SIMPLEX patch soon.

-- 
tejun
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