linux-kernel - Re: [v3.8 Regression] watchdog: sp5100

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Message-ID: <51219C56.8060504@canonical.com>
Date:	Sun, 17 Feb 2013 22:13:26 -0500
From:	Joseph Salisbury <joseph.salisbury@...onical.com>
To:	Tanaka Takahisa <mc74hc00@...il.com>
CC:	Wim Van Sebroeck <wim@...ana.be>, linux-watchdog@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>,
	Kernel Team <kernel-team@...ts.ubuntu.com>
Subject: Re: [v3.8 Regression] watchdog: sp5100_tco: Add SB8x0 chipset support

On 02/17/2013 04:44 AM, Tanaka Takahisa wrote:
> Hi Joseph,
>
> 2013/2/15 Joseph Salisbury <joseph.salisbury@...onical.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@...il.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
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