netdev - Re: [3.5 regression / mcs7830 / bisected] bridge constantly toggeling between disabled and forwarding

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Message-ID: <20121009071515.607f85a4@xenia.leun.net>
Date:	Tue, 9 Oct 2012 07:15:15 +0200
From:	Michael Leun <lkml20120218@...ton.leun.net>
To:	Greg KH <gregkh@...uxfoundation.org>
Cc:	linux@...nbow-software.org, davem@...emloft.net,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [3.5 regression / mcs7830 / bisected] bridge constantly
 toggeling between disabled and forwarding

On Thu, 27 Sep 2012 10:39:05 -0700
Greg KH <gregkh@...uxfoundation.org> wrote:

> On Tue, Jul 24, 2012 at 01:36:34AM +0200, Michael Leun wrote:
> > On Mon, 23 Jul 2012 09:15:04 +0200
> > Michael Leun <lkml20120218@...ton.leun.net> wrote:
> > 
> > [see issue description below]
> > 
> > Bisecting yielded
> > 
> > b1ff4f96fd1c63890d78d8939c6e0f2b44ce3113 is the first bad commit
> > commit b1ff4f96fd1c63890d78d8939c6e0f2b44ce3113
> > Author: Ondrej Zary <linux@...nbow-software.org>
> > Date:   Fri Jun 1 10:29:08 2012 +0000
> > 
> >     mcs7830: Implement link state detection
> > 
> >     Add .status callback that detects link state changes.
> >     Tested with MCS7832CV-AA chip (9710:7830, identified as rev.C
> > by the driver). Fixes
> > https://bugzilla.kernel.org/show_bug.cgi?id=28532
> > 
> >     Signed-off-by: Ondrej Zary <linux@...nbow-software.org>
> >     Signed-off-by: David S. Miller <davem@...emloft.net>
> > 
> > :040000 040000 5480780cb5e75c57122a621fc3bab0108c16be27
> > d97efd9cc0a465dff76bcd3a3c547f718f2a5345 M    drivers
> > 
> > 
> > Reverting that from 3.5 makes the issue go away.
> 
> Did this ever get resolved in 3.6-rc7 or any older kernel?  I can't
> revert the patch from 3.5.y unless it's also fixed in Linus's tree.

Please excuse me for answering a bit late.

No, that never got resolved, I still have the problem with 3.6 but I'm
not shure about the correct solution.

Maybe link state detection just does not work with some of that devices
and we should have an possibility to enable/disable it per device,
maybe it can be handeled with an blacklist of not working devices,
maybe it could be fixed - I do not know and also do not know how to
find out.

But I'm willing to test.

-- 
MfG,

Michael Leun

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