ath9k_hw_check_alive
EXPORT_SYMBOL(ath9k_hw_check_alive);
if (!ath9k_hw_check_alive(ah))
bool ath9k_hw_check_alive(struct ath_hw *ah);
is_alive = ath9k_hw_check_alive(sc->sc_ah);
if ((sc->gtt_cnt >= MAX_GTT_CNT) && !ath9k_hw_check_alive(ah)) {