Currently, on EEE capable platforms, if EEE SW timer is used, the SW
timer cause 1 wakeup/s even if the TX has successfully entered EEE.
Remove this unnecessary wakeup by only calling mod_timer() if we
haven't successfully entered EEE.
Signed-off-by: NJisheng Zhang <jszhang@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>