linux-kernel - Re: [PATCH] ata: Disable NCQ for Crucial M225 brand SSDs

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Message-ID: <20100127010204.7976c38b@lxorguk.ukuu.org.uk>
Date:	Wed, 27 Jan 2010 01:02:04 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	David Rees <drees76@...il.com>
Cc:	Vishal Rao <vishalrao@...il.com>, jgarzik@...ox.com,
	linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org,
	trivial@...nel.org, stable@...nel.org
Subject: Re: [PATCH] ata: Disable NCQ for Crucial M225 brand SSDs

> So my concern is that you're proposing to black list NCQ for all users
> of those particular models of SSD when it's more likely at this point
> that it's a problem with your specific setup.

It could even be a Linux side bug or some kind of complicated Linux
timing thing. That *has* happened before with the older IDE stack, so we
need to be cautious, collect reports and try to see patterns before
jumping to conclusions - unless the vendor advises us otherwise.

Alan
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