From: Stephen Hemminger <stephen@networkplumber.org>
Date: Thu, 17 Aug 2017 17:42:05 -0700
Please drop these functions, they do nothing and are not used
as stubs in any operations table.
It might have been helpful to scan the entire series to understand
why it looks this way.
He's building the driver up, one piece at a time, filling in the full
implementation as is possible as more and more infrastructure is added.
So some functions start empty when a method is needed to be filled in,
and then gradually obtains more and more content throughout the
series.
And this is a fine way to add a huge new driver (although not my
personal preference).