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 S1756710Ab3BRDNc (ORCPT <rfc822;w@1wt.eu>);
	Sun, 17 Feb 2013 22:13:32 -0500
Received: from youngberry.canonical.com ([91.189.89.112]:44579 "EHLO
	youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1755423Ab3BRDNb (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Sun, 17 Feb 2013 22:13:31 -0500
Message-ID: <51219C56.8060504@canonical.com>
Date: Sun, 17 Feb 2013 22:13:26 -0500
From: Joseph Salisbury <joseph.salisbury@canonical.com>
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130105 Thunderbird/17.0.2
MIME-Version: 1.0
To: Tanaka Takahisa <mc74hc00@gmail.com>
CC: Wim Van Sebroeck <wim@iguana.be>, linux-watchdog@vger.kernel.org,
        LKML <linux-kernel@vger.kernel.org>,
        Kernel Team <kernel-team@lists.ubuntu.com>
Subject: Re: [v3.8 Regression] watchdog: sp5100_tco: Add SB8x0 chipset support
References: <511D0BCC.9070208@canonical.com> <20130215073210.GM7867@spo001.leaseweb.com> <511E4C43.7080403@canonical.com> <CAHh0gOgeWn5QaDGzgstft7AoQsKdoZ+4Utp8iQxxSCO0q=cZ-Q@mail.gmail.com>
In-Reply-To: <CAHh0gOgeWn5QaDGzgstft7AoQsKdoZ+4Utp8iQxxSCO0q=cZ-Q@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On 02/17/2013 04:44 AM, Tanaka Takahisa wrote:
> Hi Joseph,
>
> 2013/2/15 Joseph Salisbury <joseph.salisbury@canonical.com>:
>> On 02/15/2013 02:32 AM, Wim Van Sebroeck wrote:
>>> Hi Joseph,
>>>
>>>> A bug was opened against the Ubuntu kernel[0].  It was found that
>>>> reverting the following commit resolved this bug:
>>>>
>>>> commit 740fbddf5c3f9ad8b23c5d917ba1cc7e376a5104
>>>> Author: Takahisa Tanaka <mc74hc00@gmail.com>
>>>> Date:   Sun Dec 2 14:33:18 2012 +0900
>>>>
>>>>       watchdog: sp5100_tco: Add SB8x0 chipset support
>>>>
>>>>
>>>> The regression was introduced as of v3.8-rc1.
>>>>
>>>> I see that you are the author of this patch, so I wanted to run this by
>>>> you.  I was thinking of requesting a revert for v3.8, but I wanted to
>>>> get your feedback first.
>>> Please check out the attached patches first (They are allready in
>>> linux-next).
>> Thanks for the feedback, Wim.  I'll let you know if the patches resolve this
>> bug.
>>
>>
>>> Other references:
>>> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=43176
>>> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=43176
>>>
>>> Kind regards,
>>> Wim.
> Thank you for your information, and sorry for the late reply.
>
> I think that I will get rid of code that re-programming the chipset
> registers, if my patch set doesn't resolve the problem.
> I'm waiting for your reply at the moment.
>
>
> Regards,
> Takahisa
Hi Takahisa,

The bug report tested a kernel with the patches.  However, he reports 
the kernel panic still occurs[0].

Thanks,

Joe

[0] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1116835