Bug#789316: [src:linux] alx driver broken for small MTU

[Antonio Russo <antonio.e.russo@gmail.com>]

Package: src:linux
Version: 4.0.5-1
Severity: normal

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The ALX driver drops out with "fatal interrupt 0x400"
after a short while. This apparently was known about
for a while [1] [2]. I _believe_ this problem was
fixed in the newer compat-drivers version [3], which,
again if my memory serves, was included as a patch in
the 3.16 branch now in stable (I think this closed bug
699129).

I think somehow the ALX driver never got mainlined? I
stopped following the story after it got included in
the Debian kernel. Was that patch dropped? If this is
just a matter of including the staging compat-drivers,
it'd be a pretty serious regression for many users if
that updated driver was dropped.

There is also a workaround, setting a large MTU,
described in the references:

# ifconfig eth0 mtu 9000

Thanks,
Antonio

[1] https://bugzilla.kernel.org/show_bug.cgi?id=70761
[2] https://bugs.archlinux.org/task/44315
[3] http://www.linuxfoundation.org/collaborate/workgroups/networking/alx

--- System information. ---
Architecture: amd64
Kernel:       Linux 4.0.0-2-amd64

Debian Release: stretch/sid
  450 unstable        ftp.us.debian.org
  400 testing         ftp.us.debian.org
  200 experimental    ftp.us.debian.org
  150 stable          dl.google.com

--- Package information. ---
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