Date: Mon, 6 Mar 2006 14:58:18 -0500
From: Dave Jones <davej@redhat.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Shinichi Kudo <randomshinichi4869@gmail.com>, linux-kernel@vger.kernel.org
Subject: Re: VIA C3 (Ezra C5C) Crashes with longhaul Freq scaling
Message-ID: <20060306195818.GF15971@redhat.com>
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On Mon, Mar 06, 2006 at 07:44:10PM +0000, Alan Cox wrote:
 > On Sad, 2006-03-04 at 23:38 -0500, Dave Jones wrote:
 > > There's an ugly patch below that was submitted, which fixes it for
 > > some people, but as it's a) ide specific, and b) completely the
 > > wrong place to do this and c) racy,  I never merged it to mainline.
 > 
 > If I understand the documentation correctly you simply need to disable
 > the master bit on the root bridge during the transition and the PCI
 > transactions will be stalled, providing you don't take too long about
 > it.

tried it, didn't change anything.

The current code goes one step further, and disables it for all devices.
Still no joy.  See the do_powersaver() function in arch/i386/kernel/cpu/cpufreq/longhaul.c

		Dave

-- 
http://www.codemonkey.org.uk
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