ath9k: remove bfs_paprd_timestamp from struct ath_buf_state

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

drivers/net/wireless/ath/ath9k/ath9k.h

@@ -221,7 +221,6 @@ struct ath_buf_state {
 	int bfs_retries;
 	u8 bf_type;
 	u8 bfs_paprd;
-	unsigned long bfs_paprd_timestamp;
 	u32 bfs_keyix;
 	enum ath9k_internal_frame_type bfs_ftype;
 };
@@ -598,6 +597,7 @@ struct ath_softc {
 	struct work_struct paprd_work;
 	struct work_struct hw_check_work;
 	struct completion paprd_complete;
+	bool paprd_pending;
 
 	u32 intrstatus;
 	u32 sc_flags; /* SC_OP_* */

drivers/net/wireless/ath/ath9k/main.c

@@ -375,6 +375,7 @@ void ath_paprd_calibrate(struct work_struct *work)
 		}
 
 		init_completion(&sc->paprd_complete);
+		sc->paprd_pending = true;
 		ar9003_paprd_setup_gain_table(ah, chain);
 		txctl.paprd = BIT(chain);
 		if (ath_tx_start(hw, skb, &txctl) != 0)
@@ -382,6 +383,7 @@ void ath_paprd_calibrate(struct work_struct *work)
 
 		time_left = wait_for_completion_timeout(&sc->paprd_complete,
 				msecs_to_jiffies(ATH_PAPRD_TIMEOUT));
+		sc->paprd_pending = false;
 		if (!time_left) {
 			ath_print(ath9k_hw_common(ah), ATH_DBG_CALIBRATE,
 				  "Timeout waiting for paprd training on "

drivers/net/wireless/ath/ath9k/xmit.c

@@ -1698,9 +1698,6 @@ static void ath_tx_start_dma(struct ath_softc *sc, struct ath_buf *bf,
 		if (bf->bf_state.bfs_paprd)
 			ar9003_hw_set_paprd_txdesc(ah, ds, bf->bf_state.bfs_paprd);
 
-		if (txctl->paprd)
-			bf->bf_state.bfs_paprd_timestamp = jiffies;
-
 		ath_tx_send_normal(sc, txctl->txq, NULL, &bf_head);
 	}
 
@@ -1874,9 +1871,7 @@ static void ath_tx_complete_buf(struct ath_softc *sc, struct ath_buf *bf,
 	bf->bf_buf_addr = 0;
 
 	if (bf->bf_state.bfs_paprd) {
-		if (time_after(jiffies,
-			       bf->bf_state.bfs_paprd_timestamp +
-			       msecs_to_jiffies(ATH_PAPRD_TIMEOUT)))
+		if (!sc->paprd_pending)
 			dev_kfree_skb_any(skb);
 		else
 			complete(&sc->paprd_complete);