linux-kernel - Re: sata_nv times out for BD-ROM iHOS104-08

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Date:	Fri, 22 Jan 2010 09:11:18 -0500
From:	Cengiz Günay <cgunay@...ry.edu>
To:	Robert Hancock <hancockrwd@...il.com>
Cc:	Tejun Heo <tj@...nel.org>, linux-kernel@...r.kernel.org,
	linux-ide@...r.kernel.org
Subject: Re: sata_nv times out for BD-ROM iHOS104-08

Hello, Tejun & Robert,

On Tue, Jan 19, 2010 at 9:59 PM, Robert Hancock <hancockrwd@...il.com> wrote:
>>> 2009/12/24 Tejun Heo <tj@...nel.org>:
>> Hmm.... it worked?  Does kernel parameter sata_nv.adma_enabled=0 make
>> any difference?  Can you please attach boot log with the kernel
>> parameter specified?
>
> Think you meant maybe sata_nv.swncq=0 instead - this is an MCP51
> controller so it doesn't support ADMA. I don't imagine SWNCQ would
> make any difference with an ATAPI device, but wouldn't hurt to try.

Thanks for following this up. I tried both of your suggested kernel
parameters (attached). Neither solved my problem, but also it looks
like I couldn't turn off the SWNCQ mode. Even though I set it to zero,
sata_nv still shows that it uses it. Although the order of my devices
changed, so I assume it did something.

I hope this helps shed some light! I will also try the kernel patch --
not sure if that is suited for the problem I'm having?

-Cengiz



-- 
Cengiz Gunay
--
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View attachment "dmesg-sata_nv-adma_disabled.log" of type "text/x-log" (4224 bytes)

View attachment "dmesg-sata_nv-swncq-disabled.log" of type "text/x-log" (4193 bytes)