From: Roger Luethi <rl@hellgate.ch>

PHYs may come up isolated.  Make sure we can send data to them.  This code
section needs a clean-up, but I prefer to merge this fix in isolation.

Report and suggested fix by Tam, Ming Dat (Tommy).
Signed-off-by: Roger Luethi <rl@hellgate.ch>
Signed-off-by: Andrew Morton <akpm@osdl.org>