From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1753069Ab1AGU62 (ORCPT <rfc822;w@1wt.eu>);
	Fri, 7 Jan 2011 15:58:28 -0500
Received: from mail-vw0-f46.google.com ([209.85.212.46]:55813 "EHLO
	mail-vw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1752561Ab1AGU61 (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Fri, 7 Jan 2011 15:58:27 -0500
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=sender:date:from:to:cc:subject:message-id:references:mime-version
         :content-type:content-disposition:in-reply-to:user-agent;
        b=n++EBprIY/prqJU4R5eyUTo5+O8VufNyU8gAeHvsGvTrQRt5VXO8mRugMvYAkiHs3O
         QvwuvOHZOyacGLki+xXUJsZIFV+GKXznKIrnRy1N5MmMW/9fCnzqjwil3bll890jQc13
         3go6g0UjNeMDlZqIL6M9i2R4fWYrYp4tdWLi4=
Date: Fri, 7 Jan 2011 15:58:23 -0500
From: Tejun Heo <tj@kernel.org>
To: Stephen Clark <sclark46@earthlink.net>
Cc: Robert Hancock <hancockrwd@gmail.com>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        ide <linux-ide@vger.kernel.org>
Subject: Re: Kernel 2.6.37 erroneously limiting to UDMA/33
Message-ID: <20110107205823.GF7355@mtj.dyndns.org>
References: <4D24B98D.6080307@earthlink.net>
 <4D2503B1.4080500@gmail.com>
 <4D260A11.2040102@earthlink.net>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <4D260A11.2040102@earthlink.net>
User-Agent: Mutt/1.5.20 (2009-06-14)
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

Hello,

On Thu, Jan 06, 2011 at 01:29:37PM -0500, Stephen Clark wrote:
> Hmm... libata.force=80c - didn't seem to work.

Is libata.ko a module which is loaded from initrd?  The initrd could
be dumb and fail to pass the kernel param to the module when loading
it.  In those cases, you'll need to modify initrd so that the
parameter is specified.

Thanks.

-- 
tejun