A warning would be printed for every packet that
is transmitted if the rate control information isn't
setup. Change this to WARN_ON_ONCE.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Acked-by: NJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>