netdev - Re: [BUG, regression, bisected] Marvell 88E8055 NIC (sky2) fails to detect link after resume from S3

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Message-ID: <CAKKZj2AYe2eON-Sh+gO35VJ8G+bie6_7=-0y=vSu=ZfLhu3JRw@mail.gmail.com>
Date:	Sun, 1 Jul 2012 22:58:18 +0200
From:	Michal Zatloukal <myxal.mxl@...il.com>
To:	Francois Romieu <romieu@...zoreil.com>
Cc:	Stephen Hemminger <shemminger@...tta.com>, netdev@...r.kernel.org
Subject: Re: [BUG, regression, bisected] Marvell 88E8055 NIC (sky2) fails to
 detect link after resume from S3

Traces (7z-compressed to ~250k) attached to ubuntu bug, direct link:
<https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1007841/+attachment/3210143/+files/traces.7z>

MZ

On Sun, Jul 1, 2012 at 3:30 PM, Michal Zatloukal <myxal.mxl@...il.com> wrote:
> Breaking news:
> Fiddling with mmiotrace, I was able to get the "phy I/O error" on
> previously-thought-good kernel (non-reliably; it took several
> suspend-resume cycles), and also vice versa - in vty, I was able to
> suspend and resume the "bad" kernel with the NIC still working (also
> not reliably - in GUI, it still flaked out after first
> suspend-resume).
>
> Anyway, I've gathered traces of both good and bad behaviour, each from
> the respective kernel (not that it seems to matter much). Now, what's
> the recommended way of posting them? Each is over 3MB in size and
> pastebin won't take them. :-(
>
> MZ
>
> On Sat, Jun 30, 2012 at 10:02 PM, Francois Romieu <romieu@...zoreil.com> wrote:
>> Michal Zatloukal <myxal.mxl@...il.com> :
>> [...]
>>> Is there something I can try?
>>
>> I have not used it for quite some time but comparing mmiotrace output
>> (see Documentation/trace/mmiotrace.txt) before and after the regression
>> commit may give some hint.
>>
>> Otherwise I would ask for help on linux-pm@...r.kernel.org
>>
>> --
>> Ueimor
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