ath9k: Remove a few unused variables

axq_linkbuf, axq_aggr_depth, axq_lastdsWithCTS and
axq_gatingds are unused.

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

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

@@ -198,18 +198,8 @@ struct ath_txq {
 	struct list_head axq_q;
 	spinlock_t axq_lock;
 	u32 axq_depth;
-	u8 axq_aggr_depth;
 	bool stopped;
 	bool axq_tx_inprogress;
-	struct ath_buf *axq_linkbuf;
-
-	/* first desc of the last descriptor that contains CTS */
-	struct ath_desc *axq_lastdsWithCTS;
-
-	/* final desc of the gating desc that determines whether
-	   lastdsWithCTS has been DMA'ed or not */
-	struct ath_desc *axq_gatingds;
-
 	struct list_head axq_acq;
 };
 

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

@@ -699,7 +699,6 @@ static void ath_tx_sched_aggr(struct ath_softc *sc, struct ath_txq *txq,
 		/* anchor last desc of aggregate */
 		ath9k_hw_set11n_aggr_last(sc->sc_ah, bf->bf_lastbf->bf_desc);
 
-		txq->axq_aggr_depth++;
 		ath_tx_txqaddbuf(sc, txq, &bf_q);
 		TX_STAT_INC(txq->axq_qnum, a_aggr);
 
@@ -875,8 +874,6 @@ struct ath_txq *ath_txq_setup(struct ath_softc *sc, int qtype, int subtype)
 		INIT_LIST_HEAD(&txq->axq_acq);
 		spin_lock_init(&txq->axq_lock);
 		txq->axq_depth = 0;
-		txq->axq_aggr_depth = 0;
-		txq->axq_linkbuf = NULL;
 		txq->axq_tx_inprogress = false;
 		sc->tx.txqsetup |= 1<<qnum;
 	}
@@ -1011,7 +1008,6 @@ void ath_draintxq(struct ath_softc *sc, struct ath_txq *txq, bool retry_tx)
 
 		if (list_empty(&txq->axq_q)) {
 			txq->axq_link = NULL;
-			txq->axq_linkbuf = NULL;
 			spin_unlock_bh(&txq->axq_lock);
 			break;
 		}
@@ -1196,7 +1192,6 @@ static void ath_tx_txqaddbuf(struct ath_softc *sc, struct ath_txq *txq,
 
 	list_splice_tail_init(head, &txq->axq_q);
 	txq->axq_depth++;
-	txq->axq_linkbuf = list_entry(txq->axq_q.prev, struct ath_buf, list);
 
 	ath_print(common, ATH_DBG_QUEUE,
 		  "qnum: %d, txq depth: %d\n", txq->axq_qnum, txq->axq_depth);
@@ -1965,7 +1960,6 @@ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
 		spin_lock_bh(&txq->axq_lock);
 		if (list_empty(&txq->axq_q)) {
 			txq->axq_link = NULL;
-			txq->axq_linkbuf = NULL;
 			spin_unlock_bh(&txq->axq_lock);
 			break;
 		}
@@ -1999,10 +1993,6 @@ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
 			spin_unlock_bh(&txq->axq_lock);
 			break;
 		}
-		if (bf->bf_desc == txq->axq_lastdsWithCTS)
-			txq->axq_lastdsWithCTS = NULL;
-		if (ds == txq->axq_gatingds)
-			txq->axq_gatingds = NULL;
 
 		/*
 		 * Remove ath_buf's of the same transmit unit from txq,
@@ -2016,9 +2006,6 @@ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
 				&txq->axq_q, lastbf->list.prev);
 
 		txq->axq_depth--;
-		if (bf_isaggr(bf))
-			txq->axq_aggr_depth--;
-
 		txok = (ds->ds_txstat.ts_status == 0);
 		txq->axq_tx_inprogress = false;
 		spin_unlock_bh(&txq->axq_lock);