[PATCH] ath9k: Fix TX poll cancelling

[Sujith <Sujith.Manoharan@atheros.com>]

In ath9k_stop(), tx_complete_work was being cancelled twice.
This patch fixes it. Also, locking sc->mutex should be done
at the beginning.

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
---
 drivers/net/wireless/ath/ath9k/main.c |    7 +++----
 1 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 3e09b9a..c454d19 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -2105,6 +2105,8 @@ static void ath9k_stop(struct ieee80211_hw *hw)
 	struct ath_wiphy *aphy = hw->priv;
 	struct ath_softc *sc = aphy->sc;
 
+	mutex_lock(&sc->mutex);
+
 	aphy->state = ATH_WIPHY_INACTIVE;
 
 	cancel_delayed_work_sync(&sc->ath_led_blink_work);
@@ -2117,13 +2119,10 @@ static void ath9k_stop(struct ieee80211_hw *hw)
 
 	if (sc->sc_flags & SC_OP_INVALID) {
 		DPRINTF(sc, ATH_DBG_ANY, "Device not present\n");
+		mutex_unlock(&sc->mutex);
 		return;
 	}
 
-	mutex_lock(&sc->mutex);
-
-	cancel_delayed_work_sync(&sc->tx_complete_work);
-
 	if (ath9k_wiphy_started(sc)) {
 		mutex_unlock(&sc->mutex);
 		return; /* another wiphy still in use */
-- 
1.6.4