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>

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 02e95c8e7465539e0617a9bb0fb5e072cf377014..cc2535c38beddd6a9adb2db9be3a2fe8683ec51c 100644 (file)
--- 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;