tree 21f67515090c5233e3480600af7b95aa2f953985
parent bb1fed7110c287024dce6bee8152aad903104d96
author Florian Fainelli <f.fainelli@gmail.com> 1405989759 -0700
committer David S. Miller <davem@davemloft.net> 1405997351 -0700

net: bcmgenet: only update UMAC_CMD if something changed

The link adjustment callback can be called as frequently as desired
by the PHY library, as such, let's avoid doing a Read/Modify/Write
sequence if nothing changed, since these register accesses can be
expensive.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>