ath9k: Enable interrupts at the proper place

config_interface() was the wrong place to enable interrupts
when bringing up an interface, move it to ath_open().
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath9k/core.c

@@ -675,13 +675,12 @@ int ath_open(struct ath_softc *sc, struct ath9k_channel *initial_chan)
 
 	ath_setcurmode(sc, ath_chan2mode(initial_chan));
 
-	/*
-	 *  Don't enable interrupts here as we've not yet built our
-	 *  vap and node data structures, which will be needed as soon
-	 *  as we start receiving.
-	 */
 	sc->sc_flags &= ~SC_OP_INVALID;
 
+	/* Disable BMISS interrupt when we're not associated */
+	sc->sc_imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
+	ath9k_hw_set_interrupts(sc->sc_ah,sc->sc_imask);
+
 	ieee80211_wake_queues(sc->hw);
 done:
 	return error;

drivers/net/wireless/ath9k/main.c

@@ -1237,12 +1237,6 @@ static int ath9k_config_interface(struct ieee80211_hw *hw,
 			/* Set aggregation protection mode parameters */
 			sc->sc_config.ath_aggr_prot = 0;
 
-			/* Disable BMISS interrupt when we're not associated */
-			ath9k_hw_set_interrupts(sc->sc_ah,
-					sc->sc_imask &
-					~(ATH9K_INT_SWBA | ATH9K_INT_BMISS));
-			sc->sc_imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
-
 			DPRINTF(sc, ATH_DBG_CONFIG,
 				"%s: RX filter 0x%x bssid %pM aid 0x%x\n",
 				__func__, rfilt,