ath9k: Remove TIM from the interrupt mask

We never handle TIM, TIM_TIMER is used instead.
Remove this and the unnecessary swBeaconProcess variable.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath9k/ath9k.h

@@ -66,7 +66,6 @@ struct ath_config {
 	u32 ath_aggr_prot;
 	u16 txpowlimit;
 	u8 cabqReadytime;
-	u8 swBeaconProcess;
 };
 
 /*************************/

drivers/net/wireless/ath9k/main.c

@@ -1542,9 +1542,6 @@ static int ath_init(u16 devid, struct ath_softc *sc)
 		sc->beacon.bslot_aphy[i] = NULL;
 	}
 
-	/* save MISC configurations */
-	sc->config.swBeaconProcess = 1;
-
 	/* setup channels and rates */
 
 	sc->sbands[IEEE80211_BAND_2GHZ].channels = ath9k_2ghz_chantable;
@@ -2253,17 +2250,6 @@ static int ath9k_add_interface(struct ieee80211_hw *hw,
 		sc->imask |= ATH9K_INT_TSFOOR;
 	}
 
-	/*
-	 * Some hardware processes the TIM IE and fires an
-	 * interrupt when the TIM bit is set.  For hardware
-	 * that does, if not overridden by configuration,
-	 * enable the TIM interrupt when operating as station.
-	 */
-	if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_ENHANCEDPM) &&
-	    (conf->type == NL80211_IFTYPE_STATION) &&
-	    !sc->config.swBeaconProcess)
-		sc->imask |= ATH9K_INT_TIM;
-
 	ath9k_hw_set_interrupts(sc->sc_ah, sc->imask);
 
 	if (conf->type == NL80211_IFTYPE_AP) {