linux-kernel - Re: sata_sil24: external raid storage mistaken as port multiplier

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Message-ID: <4CF01583.5050307@kernel.org>
Date:	Fri, 26 Nov 2010 21:16:03 +0100
From:	Tejun Heo <tj@...nel.org>
To:	Mark Lord <kernel@...savvy.com>
CC:	Tobias Karnat <tobias.karnat@...glemail.com>,
	linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: sata_sil24: external raid storage mistaken as port multiplier

Hello,

On 11/26/2010 09:13 PM, Mark Lord wrote:
>> That said, yeah, it probably would be a good idea to add a
>> libata.force param.
> 
> How about some form of auto-detection instead?

That's a device which reports that it's a PMP but fails to behave
itself as one.  The sucky thing is that depending on the current mode
and firmware revision, the same hardware can actually bahave as a
pretty decent PMP.  I frankly have no idea how to work it around.

-- 
tejun
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