ath9k: tx queue enable is read only for EDMA chipsets

for EDMA chip AR_Q_TXE (tx enable for each queue) is read only

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/ath/ath9k/beacon.c b/drivers/net/wireless/ath/ath9k/beacon.c
index dc5fd569690ffe15365c6c95403204d3bf29c112..b8967e482e6ef952ea97317bac7d4f34322d4e7e 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/beacon.c
+++ b/drivers/net/wireless/ath/ath9k/beacon.c
@@ -356,6 +356,7 @@ void ath_beacon_tasklet(unsigned long data)
        struct ath_buf *bf = NULL;
        struct ieee80211_vif *vif;
        struct ath_tx_status ts;
+       bool edma = !!(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA);
        int slot;
        u32 bfaddr, bc = 0;
 
@@ -456,10 +457,12 @@ void ath_beacon_tasklet(unsigned long data)
        if (bfaddr != 0) {
                /* NB: cabq traffic should already be queued and primed */
                ath9k_hw_puttxbuf(ah, sc->beacon.beaconq, bfaddr);
-               ath9k_hw_txstart(ah, sc->beacon.beaconq);
+
+               if (!edma)
+                       ath9k_hw_txstart(ah, sc->beacon.beaconq);
 
                sc->beacon.ast_be_xmit += bc;     /* XXX per-vif? */
-               if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
+               if (edma) {
                        spin_lock_bh(&sc->sc_pcu_lock);
                        ath9k_hw_txprocdesc(ah, bf->bf_desc, (void *)&ts);
                        spin_unlock_bh(&sc->sc_pcu_lock);