AR_PHY_CHAN_INFO_GAIN_DIFF_UPPER_LIMIT  397 drivers/net/wireless/ath/ath9k/ar9002_phy.h #define AR_PHY_CHAN_INFO_GAIN_DIFF_UPPER_LIMIT 320
AR_PHY_CHAN_INFO_GAIN_DIFF_UPPER_LIMIT  862 drivers/net/wireless/ath/ath9k/ar9003_phy.h #define AR_PHY_CHAN_INFO_GAIN_DIFF_UPPER_LIMIT         320