ath9k: do not call ath9k_hw_txprocdesc on AR9003 outside of the tx tasklet

Since AR9003 uses a global tx status queue, processing tx status outside of
the regular tx tasklet is dangerous and messes up hardware/software
synchronization of tx status events.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 02e95c8e746..cc2535c38be 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -2300,6 +2300,7 @@ static int ath9k_tx_last_beacon(struct ieee80211_hw *hw)
         struct ath_vif *avp;
         struct ath_buf *bf;
         struct ath_tx_status ts;
+        bool edma = !!(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA);
         int status;
 
         vif = sc->beacon.bslot[0];
@@ -2310,7 +2311,7 @@ static int ath9k_tx_last_beacon(struct ieee80211_hw *hw)
         if (!avp->is_bslot_active)
                 return 0;
 
-        if (!sc->beacon.tx_processed) {
+        if (!sc->beacon.tx_processed && !edma) {
                 tasklet_disable(&sc->bcon_tasklet);
 
                 bf = avp->av_bcbuf;