Bug#620331: linux-2.6: igb driver fix for management card detection

[Ben Hutchings <ben@decadent.org.uk>]

On Mon, Apr 04, 2011 at 08:45:40AM +0200, Julien-externe BLACHE wrote:
> ben@decadent.org.uk wrote on 04/03/2011 06:06:24 AM:
> 
> Hi Ben,
> 
> > > This can lead to a loss of network connectivity for the host and/or 
> the 
> > > management card eventually.
> > 
> > How does the host lose connectivity?
> > 
> > I'm somewhat wary of cherry-picking such a patch without a very good
> > reason.  Interactions with Lights Out Management seem to be particularly
> > prone to regression.
> 
> In this specific case, the host isn't actually affected; only the MC can 
> lose connectivity if the driver doesn't detect the MC due to this bug and 
> powers down/resets the interface when it shouldn't.
> 
> Bugs that led to the host losing connectivity were fixed in or before 
> 2.6.32.
> 
> This patch is entirely safe to apply, per 82575 documentation and the fact 
> that it comes straight from Intel ;)
 
So do many interesting regressions.

I expect that at some point we'll want to update the driver to add new
hardware support, and then we'll pick this up along the way.  Until
then, however, I'm not going to apply it.

Ben.

-- 
Ben Hutchings
We get into the habit of living before acquiring the habit of thinking.
                                                              - Albert Camus