netdev - Re: [REGRESSION] e1000e stopped working [MANUALLY BISECTED]

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Message-ID: <AANLkTimkwz1JYdUgD8Z_Nnx+9o-fzezHFuOD4HeZKqAu@mail.gmail.com>
Date:	Sat, 31 Jul 2010 19:08:04 -0700
From:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:	Maxim Levitsky <maximlevitsky@...il.com>
Cc:	"Tantilov, Emil S" <emil.s.tantilov@...el.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"Allan, Bruce W" <bruce.w.allan@...el.com>,
	"Pieper, Jeffrey E" <jeffrey.e.pieper@...el.com>
Subject: Re: [REGRESSION] e1000e stopped working [MANUALLY BISECTED]

On Wed, Jul 28, 2010 at 18:10, Jeff Kirsher <jeffrey.t.kirsher@...el.com> wrote:
> On Wed, Jul 28, 2010 at 00:04, Maxim Levitsky <maximlevitsky@...il.com> wrote:
>> On Mon, 2010-07-26 at 03:25 +0300, Maxim Levitsky wrote:
>>>
>>> This commit, present in net-next, solves the problem:
>>>
>>> commit 1286950690f0f82ffa504e1e149ee3fdb4c51478
>>> Author: Bruce Allan <bruce.w.allan@...el.com>
>>> Date:   Mon Jul 26 03:19:38 2010 +0300
>>>
>>>     e1000e: cleanup e1000_sw_lcd_config_ich8lan()
>>>
>>>     Do not acquire and release the PHY unnecessarily for parts that return
>>>     from this workaround without actually accessing the PHY registers.
>>>
>>>     Signed-off-by: Bruce Allan <bruce.w.allan@...el.com>
>>>     Tested-by: Jeff Pieper <jeffrey.e.pieper@...el.com>
>>>     Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
>>>     Signed-off-by: David S. Miller <davem@...emloft.net>
>>>
>>>
>>>
>>>
>>> Also, the above patch is part of whole series of patches with scary descriptions (that is these fix bugs).
>>> If I were you I would send them to Linus for 2.6.35 inclusion too.
>>>
>>> Best regards,
>>>       Maxim Levitsky
>>>
>>>
>>>
>> ping
>>
>
> Sorry for the delayed response.  I am working on the issue.  Here is
> the problem I am having, the patch that fixes the issue you are seeing
> is fairly large and is a cleanup to the ich8 function, which as it
> stands now, would not be accepted into net-2.6 tree this late into the
> -rc cycle.  So, what I looking at is, what specifically fixed the
> issue you are seeing that resides in that patch, and come up with a
> smaller (acceptable) patch that I can submit to net-2.6 now to resolve
> your issue.
>
> I have dedicated most of this evening to finding a resolution to your
> issue that will be acceptable for the net-2.6 tree.  As you noted,
> there were several patches before this particular commit that may play
> some part in the resolution as well, and that is what I will be
> looking into.  I greatly appreciate the hard work you have done to
> help us resolve this issue, and will make sure you get credit for any
> solution I put together to resolve this issue.
>
> --
> Cheers,
> Jeff
>

To keep everyone informed...

We have found the root cause for this issue with the help of Maxim,
and will have a patch to fix the issue in the next couple of days.

-- 
Cheers,
Jeff
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