ath9k: Stop the BTCOEX timers before disabling BTCOEX

Its safe to stop the BTCOEX timers 'period_timer' and
'no_stomp_timer' before disabling BTCOEX. These timers
can call ath9k_hw_btcoex_enable (or) change the BT
stomp type if they seem to be running after we had
called ath9k_hw_btcoex_disable, which is obviously
not correct.

Cc: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Cc: Bala Shanmugam <bkamatch@qca.qualcomm.com>
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath9k/gpio.c

@@ -393,9 +393,9 @@ void ath9k_stop_btcoex(struct ath_softc *sc)
 
 	if (ah->btcoex_hw.enabled &&
 	    ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) {
-		ath9k_hw_btcoex_disable(ah);
 		if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE)
 			ath9k_btcoex_timer_pause(sc);
+		ath9k_hw_btcoex_disable(ah);
 		if (AR_SREV_9462(ah))
 			ath_mci_flush_profile(&sc->btcoex.mci);
 	}

drivers/net/wireless/ath/ath9k/mci.c

@@ -174,8 +174,8 @@ static void ath_mci_update_scheme(struct ath_softc *sc)
 			btcoex->btcoex_period >>= 1;
 	}
 
-	ath9k_hw_btcoex_disable(sc->sc_ah);
 	ath9k_btcoex_timer_pause(sc);
+	ath9k_hw_btcoex_disable(sc->sc_ah);
 
 	if (IS_CHAN_5GHZ(sc->sc_ah->curchan))
 		return;