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Commit 102e0572 authored by Sujith's avatar Sujith Committed by John W. Linville
Browse files

ath9k: Ensure ath_node is not NULL when updating tx chainmask 



Also, random indentation and whitespace cleanup.

Signed-off-by: default avatarSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 43453b33

drivers/net/wireless/ath9k/main.c

+1 −2
Original line number Diff line number Diff line
@@ -489,8 +489,7 @@ int _ath_rx_indicate(struct ath_softc *sc, 
	return 0;

}



int ath_rx_subframe(struct ath_node *an,

		    struct sk_buff *skb,

int ath_rx_subframe(struct ath_node *an, struct sk_buff *skb,

		    struct ath_recv_status *status)

{

	struct ath_softc *sc = an->an_sc;

drivers/net/wireless/ath9k/recv.c

+3 −3
Original line number Diff line number Diff line
@@ -356,8 +356,8 @@ static void ath_rx_timer(unsigned long data) 


/* Free all pending sub-frames in the re-ordering buffer */



static void ath_rx_flush_tid(struct ath_softc *sc,

	struct ath_arx_tid *rxtid, int drop)

static void ath_rx_flush_tid(struct ath_softc *sc, struct ath_arx_tid *rxtid,

			     int drop)

{

	struct ath_rxbuf *rxbuf;

	unsigned long flag;

drivers/net/wireless/ath9k/xmit.c

+23 −34
Original line number Diff line number Diff line
@@ -65,11 +65,12 @@ static u32 bits_per_symbol[][2] = { 
 * NB: must be called with txq lock held

 */



static void ath_tx_txqaddbuf(struct ath_softc *sc,

		struct ath_txq *txq, struct list_head *head)

static void ath_tx_txqaddbuf(struct ath_softc *sc, struct ath_txq *txq,

			     struct list_head *head)

{

	struct ath_hal *ah = sc->sc_ah;

	struct ath_buf *bf;



	/*

	 * Insert the frame on the outbound list and

	 * pass it on to the hardware.
@@ -360,6 +361,7 @@ static void ath_tx_complete_buf(struct ath_softc *sc, 
		if (bf_isxretried(bf))

			tx_status.flags |= ATH_TX_XRETRY;

	}



	/* Unmap this frame */

	pci_unmap_single(sc->pdev,

			 bf->bf_dmacontext,
@@ -497,8 +499,8 @@ static void ath_tx_set_retry(struct ath_softc *sc, struct ath_buf *bf) 


/* Update block ack window */



static void ath_tx_update_baw(struct ath_softc *sc,

	struct ath_atx_tid *tid, int seqno)

static void ath_tx_update_baw(struct ath_softc *sc, struct ath_atx_tid *tid,

			      int seqno)

{

	int index, cindex;
@@ -522,12 +524,8 @@ static void ath_tx_update_baw(struct ath_softc *sc, 
 * half_gi - to use 4us v/s 3.6 us for symbol time

 */



static u32 ath_pkt_duration(struct ath_softc *sc,

				  u8 rix,

				  struct ath_buf *bf,

				  int width,

				  int half_gi,

				  bool shortPreamble)

static u32 ath_pkt_duration(struct ath_softc *sc, u8 rix, struct ath_buf *bf,

			    int width, int half_gi, bool shortPreamble)

{

	const struct ath9k_rate_table *rt = sc->sc_currates;

	u32 nbits, nsymbits, duration, nsymbols;
@@ -541,10 +539,7 @@ static u32 ath_pkt_duration(struct ath_softc *sc, 
	 * for legacy rates, use old function to compute packet duration

	 */

	if (!IS_HT_RATE(rc))

		return ath9k_hw_computetxtime(sc->sc_ah,

					     rt,

					     pktlen,

					     rix,

		return ath9k_hw_computetxtime(sc->sc_ah, rt, pktlen, rix,

					      shortPreamble);

	/*

	 * find number of symbols: PLCP + data
@@ -563,6 +558,7 @@ static u32 ath_pkt_duration(struct ath_softc *sc, 
	 */

	streams = HT_RC_2_STREAMS(rc);

	duration += L_STF + L_LTF + L_SIG + HT_SIG + HT_STF + HT_LTF(streams);



	return duration;

}
@@ -578,7 +574,6 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf) 
	int i, flags, rtsctsena = 0;

	u32 ctsduration = 0;

	u8 rix = 0, cix, ctsrate = 0;

	u32 aggr_limit_with_rts = ah->ah_caps.rts_aggr_limit;

	struct ath_node *an = NULL;

	struct sk_buff *skb;

	struct ieee80211_tx_info *tx_info;
@@ -646,7 +641,7 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf) 
	/*

	 *  For AR5416 - RTS cannot be followed by a frame larger than 8K.

	 */

	if (bf_isaggr(bf) && (bf->bf_al > aggr_limit_with_rts)) {

	if (bf_isaggr(bf) && (bf->bf_al > ah->ah_caps.rts_aggr_limit)) {

		/*

		 * Ensure that in the case of SM Dynamic power save

		 * while we are bursting the second aggregate the
@@ -659,8 +654,8 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf) 
	 * CTS transmit rate is derived from the transmit rate

	 * by looking in the h/w rate table.  We must also factor

	 * in whether or not a short preamble is to be used.

	 * NB: cix is set above where RTS/CTS is enabled

	 */

	/* NB: cix is set above where RTS/CTS is enabled */

	BUG_ON(cix == 0xff);

	ctsrate = rt->info[cix].rateCode |

		(bf_isshpreamble(bf) ? rt->info[cix].shortPreamble : 0);
@@ -689,15 +684,13 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf) 
			((bf->bf_rcs[i].flags & ATH_RC_SGI_FLAG) ?

				ATH9K_RATESERIES_HALFGI : 0);



		series[i].PktDuration = ath_pkt_duration(

			sc, rix, bf,

		series[i].PktDuration = ath_pkt_duration(sc, rix, bf,

			 (bf->bf_rcs[i].flags & ATH_RC_CW40_FLAG) != 0,

			 (bf->bf_rcs[i].flags & ATH_RC_SGI_FLAG),

			 bf_isshpreamble(bf));



		if (bf_isht(bf))

			series[i].ChSel =

				ath_chainmask_sel_logic(sc, an);

		if (bf_isht(bf) && an)

			series[i].ChSel = ath_chainmask_sel_logic(sc, an);

		else

			series[i].ChSel = sc->sc_tx_chainmask;
@@ -748,6 +741,7 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf) 
				     ctsrate,

				     ctsduration,

				     series, 4, flags);



	if (sc->sc_config.ath_aggr_prot && flags)

		ath9k_hw_set11n_burstduration(ah, ds, 8192);

}
@@ -1238,15 +1232,12 @@ static void ath_tx_stopdma(struct ath_softc *sc, struct ath_txq *txq) 
static void ath_drain_txdataq(struct ath_softc *sc, bool retry_tx)

{

	struct ath_hal *ah = sc->sc_ah;

	int i;

	int npend = 0;

	int i, status, npend = 0;



	/* XXX return value */

	if (!(sc->sc_flags & SC_OP_INVALID)) {

		for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {

			if (ATH_TXQ_SETUP(sc, i)) {

				ath_tx_stopdma(sc, &sc->sc_txq[i]);



				/* The TxDMA may not really be stopped.

				 * Double check the hal tx pending count */

				npend += ath9k_hw_numtxpending(ah,
@@ -1256,8 +1247,6 @@ static void ath_drain_txdataq(struct ath_softc *sc, bool retry_tx) 
	}



	if (npend) {

		int status;



		/* TxDMA not stopped, reset the hal */

		DPRINTF(sc, ATH_DBG_XMIT,

			"%s: Unable to stop TxDMA. Reset HAL!\n", __func__);
@@ -1360,6 +1349,7 @@ static int ath_tx_send_ampdu(struct ath_softc *sc, 
	bf->bf_lastbf = bf->bf_lastfrm; /* one single frame */

	ath_buf_set_rate(sc, bf);

	ath_tx_txqaddbuf(sc, txctl->txq, bf_head);



	return 0;

}
@@ -1380,7 +1370,6 @@ static u32 ath_lookup_rate(struct ath_softc *sc, 
	u16 aggr_limit, legacy = 0, maxampdu;

	int i;





	skb = (struct sk_buff *)bf->bf_mpdu;

	tx_info = IEEE80211_SKB_CB(skb);

	tx_info_priv = (struct ath_tx_info_priv *)

drivers/net/wireless/ath9k/rc.c

+1 −1

File changed.

Contains only whitespace changes.