ath9k_regd_get_eeprom_reg_ext_bits
!(ath9k_regd_get_eeprom_reg_ext_bits(ah, REG_EXT_FCC_DFS_HT40)) &&
!(ath9k_regd_get_eeprom_reg_ext_bits(ah,
!(ath9k_regd_get_eeprom_reg_ext_bits(ah, REG_EXT_JAPAN_DFS_HT40)) &&