ath9k: block new AMPDU sessions if SC_OP_TXAGGR is not set

This makes further tx path cleanups easier

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

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 6e93a53c5e3..dede9a9aa68 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1979,6 +1979,9 @@ static int ath9k_ampdu_action(struct ieee80211_hw *hw,
         case IEEE80211_AMPDU_RX_STOP:
                 break;
         case IEEE80211_AMPDU_TX_START:
+                if (!(sc->sc_flags & SC_OP_TXAGGR))
+                        return -EOPNOTSUPP;
+
                 ath9k_ps_wakeup(sc);
                 ret = ath_tx_aggr_start(sc, sta, tid, ssn);
                 if (!ret)