Merge branch 'macb-rx-filter-cleanups'

Merge branch 'macb-rx-filter-cleanups'

Julia Cartwright says:

====================
macb rx filter cleanups

Here's a proper patchset based on net-next.

v1 -> v2:
  - Rebased on net-next
  - Add Nicolas's Acks
  - Reorder commits, putting the list_empty() cleanups prior to the
    others.
  - Added commit reverting the GFP_ATOMIC change.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>