ath9k: stop rx before tx, should reduce the frequency of "Failed to stop Tx DMA" errors

SVN-Revision: 31689

package/mac80211/patches/560-ath9k_fix_rx_tx_stop.patch

@@ -0,0 +1,26 @@
+--- a/drivers/net/wireless/ath/ath9k/main.c
++++ b/drivers/net/wireless/ath/ath9k/main.c
+@@ -235,7 +235,7 @@ static bool ath_prepare_reset(struct ath
+ {
+ 	struct ath_hw *ah = sc->sc_ah;
+ 	struct ath_common *common = ath9k_hw_common(ah);
+-	bool ret;
++	bool ret = true;
+ 
+ 	ieee80211_stop_queues(sc->hw);
+ 
+@@ -246,11 +246,12 @@ static bool ath_prepare_reset(struct ath
+ 	ath9k_debug_samp_bb_mac(sc);
+ 	ath9k_hw_disable_interrupts(ah);
+ 
+-	ret = ath_drain_all_txq(sc, retry_tx);
+-
+ 	if (!ath_stoprecv(sc))
+ 		ret = false;
+ 
++	if (!ath_drain_all_txq(sc, retry_tx))
++		ret = false;
++
+ 	if (!flush) {
+ 		if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
+ 			ath_rx_tasklet(sc, 1, true);