--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Sun, 28 Aug 2016 13:13:42 +0200
+Subject: [PATCH] ath9k: clear potentially stale EOSP status bit in
+ intermediate queues
+
+Prevents spurious ieee80211_sta_eosp calls.
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/drivers/net/wireless/ath/ath9k/xmit.c
++++ b/drivers/net/wireless/ath/ath9k/xmit.c
+@@ -1004,7 +1004,8 @@ ath_tx_get_tid_subframe(struct ath_softc
+ bf->bf_lastbf = bf;
+
+ tx_info = IEEE80211_SKB_CB(skb);
+- tx_info->flags &= ~IEEE80211_TX_CTL_CLEAR_PS_FILT;
++ tx_info->flags &= ~(IEEE80211_TX_CTL_CLEAR_PS_FILT |
++ IEEE80211_TX_STATUS_EOSP);
+
+ /*
+ * No aggregation session is running, but there may be frames