This will enable the support for the Atheros wireless drivers. ath5k, ath9k, ath9k_htc and ar9170 drivers share some common code, this option enables the common ath.ko module which shares common helpers. For more information and documentation on this module you can visit: http://wireless.kernel.org/en/users/Drivers/ath For information on all Atheros wireless drivers visit: http://wireless.kernel.org/en/users/Drivers/Atheros
Say Y, if you want to debug atheros wireless drivers. Right now only ath9k makes use of this.