AH_USE_EEPROM
#define ath9k_hw_use_flash(_ah) (!(_ah->ah_flags & AH_USE_EEPROM))
ah->ah_flags |= AH_USE_EEPROM;
ah->ah_flags &= ~AH_USE_EEPROM;
ah->ah_flags &= ~AH_USE_EEPROM;
ah->ah_flags |= AH_USE_EEPROM;