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68169c24f2
openwrt-xburst/package/mac80211/patches/580-ath9k_tx_fifo_cleanup.patch
nbd 2bc10e6382 ath9k: fix some locking issues in the tx fifo cleanup patch 
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@26947 3c298f89-4303-0410-b956-a3cf2f4a3e73
2011-05-19 09:33:45 +00:00

599 lines
18 KiB
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Raw Blame History

--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -53,7 +53,7 @@ static void ath_tx_complete_buf(struct a
struct ath_txq *txq, struct list_head *bf_q,
struct ath_tx_status *ts, int txok, int sendbar);
static void ath_tx_txqaddbuf(struct ath_softc *sc, struct ath_txq *txq,
- struct list_head *head);
+ struct list_head *head, bool internal);
static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf, int len);
static void ath_tx_rc_status(struct ath_softc *sc, struct ath_buf *bf,
struct ath_tx_status *ts, int nframes, int nbad,
@@ -377,8 +377,7 @@ static void ath_tx_complete_aggr(struct
bf_next = bf->bf_next;
bf->bf_state.bf_type |= BUF_XRETRY;
- if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) ||
- !bf->bf_stale || bf_next != NULL)
+ if (!bf->bf_stale || bf_next != NULL)
list_move_tail(&bf->list, &bf_head);
ath_tx_rc_status(sc, bf, ts, 1, 1, 0, false);
@@ -463,20 +462,14 @@ static void ath_tx_complete_aggr(struct
}
}
- if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) &&
- bf_next == NULL) {
- /*
- * Make sure the last desc is reclaimed if it
- * not a holding desc.
- */
- if (!bf_last->bf_stale)
- list_move_tail(&bf->list, &bf_head);
- else
- INIT_LIST_HEAD(&bf_head);
- } else {
- BUG_ON(list_empty(bf_q));
+ /*
+ * Make sure the last desc is reclaimed if it
+ * not a holding desc.
+ */
+ if (!bf_last->bf_stale || bf_next != NULL)
list_move_tail(&bf->list, &bf_head);
- }
+ else
+ INIT_LIST_HEAD(&bf_head);
if (!txpending || (tid->state & AGGR_CLEANUP)) {
/*
@@ -837,7 +830,7 @@ static void ath_tx_sched_aggr(struct ath
bf->bf_state.bf_type &= ~BUF_AGGR;
ath9k_hw_clr11n_aggr(sc->sc_ah, bf->bf_desc);
ath_buf_set_rate(sc, bf, fi->framelen);
- ath_tx_txqaddbuf(sc, txq, &bf_q);
+ ath_tx_txqaddbuf(sc, txq, &bf_q, false);
continue;
}
@@ -849,7 +842,7 @@ static void ath_tx_sched_aggr(struct ath
/* anchor last desc of aggregate */
ath9k_hw_set11n_aggr_last(sc->sc_ah, bf->bf_lastbf->bf_desc);
- ath_tx_txqaddbuf(sc, txq, &bf_q);
+ ath_tx_txqaddbuf(sc, txq, &bf_q, false);
TX_STAT_INC(txq->axq_qnum, a_aggr);
} while (txq->axq_ampdu_depth < ATH_AGGR_MIN_QDEPTH &&
@@ -1085,7 +1078,6 @@ struct ath_txq *ath_txq_setup(struct ath
txq->txq_headidx = txq->txq_tailidx = 0;
for (i = 0; i < ATH_TXFIFO_DEPTH; i++)
INIT_LIST_HEAD(&txq->txq_fifo[i]);
- INIT_LIST_HEAD(&txq->txq_fifo_pending);
}
return &sc->tx.txq[axq_qnum];
}
@@ -1155,13 +1147,8 @@ static bool bf_is_ampdu_not_probing(stru
return bf_isampdu(bf) && !(info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE);
}
-/*
- * Drain a given TX queue (could be Beacon or Data)
- *
- * This assumes output has been stopped and
- * we do not need to block ath_tx_tasklet.
- */
-void ath_draintxq(struct ath_softc *sc, struct ath_txq *txq, bool retry_tx)
+static void ath_drain_txq_list(struct ath_softc *sc, struct ath_txq *txq,
+ struct list_head *list, bool retry_tx)
{
struct ath_buf *bf, *lastbf;
struct list_head bf_head;
@@ -1170,93 +1157,63 @@ void ath_draintxq(struct ath_softc *sc,
memset(&ts, 0, sizeof(ts));
INIT_LIST_HEAD(&bf_head);
- for (;;) {
- spin_lock_bh(&txq->axq_lock);
+ while (!list_empty(list)) {
+ bf = list_first_entry(list, struct ath_buf, list);
- if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
- if (list_empty(&txq->txq_fifo[txq->txq_tailidx])) {
- txq->txq_headidx = txq->txq_tailidx = 0;
- spin_unlock_bh(&txq->axq_lock);
- break;
- } else {
- bf = list_first_entry(&txq->txq_fifo[txq->txq_tailidx],
- struct ath_buf, list);
- }
- } else {
- if (list_empty(&txq->axq_q)) {
- txq->axq_link = NULL;
- spin_unlock_bh(&txq->axq_lock);
- break;
- }
- bf = list_first_entry(&txq->axq_q, struct ath_buf,
- list);
-
- if (bf->bf_stale) {
- list_del(&bf->list);
- spin_unlock_bh(&txq->axq_lock);
+ if (bf->bf_stale) {
+ list_del(&bf->list);
- ath_tx_return_buffer(sc, bf);
- continue;
- }
+ ath_tx_return_buffer(sc, bf);
+ continue;
}
lastbf = bf->bf_lastbf;
-
- if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
- list_cut_position(&bf_head,
- &txq->txq_fifo[txq->txq_tailidx],
- &lastbf->list);
- INCR(txq->txq_tailidx, ATH_TXFIFO_DEPTH);
- } else {
- /* remove ath_buf's of the same mpdu from txq */
- list_cut_position(&bf_head, &txq->axq_q, &lastbf->list);
- }
+ list_cut_position(&bf_head, list, &lastbf->list);
txq->axq_depth--;
if (bf_is_ampdu_not_probing(bf))
txq->axq_ampdu_depth--;
- spin_unlock_bh(&txq->axq_lock);
+ spin_unlock_bh(&txq->axq_lock);
if (bf_isampdu(bf))
ath_tx_complete_aggr(sc, txq, bf, &bf_head, &ts, 0,
retry_tx);
else
ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0, 0);
+ spin_lock_bh(&txq->axq_lock);
}
+}
+/*
+ * Drain a given TX queue (could be Beacon or Data)
+ *
+ * This assumes output has been stopped and
+ * we do not need to block ath_tx_tasklet.
+ */
+void ath_draintxq(struct ath_softc *sc, struct ath_txq *txq, bool retry_tx)
+{
spin_lock_bh(&txq->axq_lock);
- txq->axq_tx_inprogress = false;
- spin_unlock_bh(&txq->axq_lock);
-
if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
- spin_lock_bh(&txq->axq_lock);
- while (!list_empty(&txq->txq_fifo_pending)) {
- bf = list_first_entry(&txq->txq_fifo_pending,
- struct ath_buf, list);
- list_cut_position(&bf_head,
- &txq->txq_fifo_pending,
- &bf->bf_lastbf->list);
- spin_unlock_bh(&txq->axq_lock);
+ int idx = txq->txq_tailidx;
- if (bf_isampdu(bf))
- ath_tx_complete_aggr(sc, txq, bf, &bf_head,
- &ts, 0, retry_tx);
- else
- ath_tx_complete_buf(sc, bf, txq, &bf_head,
- &ts, 0, 0);
- spin_lock_bh(&txq->axq_lock);
+ while (!list_empty(&txq->txq_fifo[idx])) {
+ ath_drain_txq_list(sc, txq, &txq->txq_fifo[idx],
+ retry_tx);
+
+ INCR(idx, ATH_TXFIFO_DEPTH);
}
- spin_unlock_bh(&txq->axq_lock);
+ txq->txq_tailidx = idx;
}
+ txq->axq_link = NULL;
+ txq->axq_tx_inprogress = false;
+ ath_drain_txq_list(sc, txq, &txq->axq_q, retry_tx);
+
/* flush any pending frames if aggregation is enabled */
- if (sc->sc_flags & SC_OP_TXAGGR) {
- if (!retry_tx) {
- spin_lock_bh(&txq->axq_lock);
- ath_txq_drain_pending_buffers(sc, txq);
- spin_unlock_bh(&txq->axq_lock);
- }
- }
+ if ((sc->sc_flags & SC_OP_TXAGGR) && !retry_tx)
+ ath_txq_drain_pending_buffers(sc, txq);
+
+ spin_unlock_bh(&txq->axq_lock);
}
bool ath_drain_all_txq(struct ath_softc *sc, bool retry_tx)
@@ -1370,11 +1327,13 @@ void ath_txq_schedule(struct ath_softc *
* assume the descriptors are already chained together by caller.
*/
static void ath_tx_txqaddbuf(struct ath_softc *sc, struct ath_txq *txq,
- struct list_head *head)
+ struct list_head *head, bool internal)
{
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
- struct ath_buf *bf;
+ struct ath_buf *bf, *bf_last;
+ bool puttxbuf = false;
+ bool edma;
/*
* Insert the frame on the outbound list and
@@ -1384,51 +1343,49 @@ static void ath_tx_txqaddbuf(struct ath_
if (list_empty(head))
return;
+ edma = !!(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA);
bf = list_first_entry(head, struct ath_buf, list);
+ bf_last = list_entry(head->prev, struct ath_buf, list);
ath_dbg(common, ATH_DBG_QUEUE,
"qnum: %d, txq depth: %d\n", txq->axq_qnum, txq->axq_depth);
- if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
- if (txq->axq_depth >= ATH_TXFIFO_DEPTH) {
- list_splice_tail_init(head, &txq->txq_fifo_pending);
- return;
- }
- if (!list_empty(&txq->txq_fifo[txq->txq_headidx]))
- ath_dbg(common, ATH_DBG_XMIT,
- "Initializing tx fifo %d which is non-empty\n",
- txq->txq_headidx);
- INIT_LIST_HEAD(&txq->txq_fifo[txq->txq_headidx]);
- list_splice_init(head, &txq->txq_fifo[txq->txq_headidx]);
+ if (edma && list_empty(&txq->txq_fifo[txq->txq_headidx])) {
+ list_splice_tail_init(head, &txq->txq_fifo[txq->txq_headidx]);
INCR(txq->txq_headidx, ATH_TXFIFO_DEPTH);
- TX_STAT_INC(txq->axq_qnum, puttxbuf);
- ath9k_hw_puttxbuf(ah, txq->axq_qnum, bf->bf_daddr);
- ath_dbg(common, ATH_DBG_XMIT, "TXDP[%u] = %llx (%p)\n",
- txq->axq_qnum, ito64(bf->bf_daddr), bf->bf_desc);
+ puttxbuf = true;
} else {
list_splice_tail_init(head, &txq->axq_q);
- if (txq->axq_link == NULL) {
- TX_STAT_INC(txq->axq_qnum, puttxbuf);
- ath9k_hw_puttxbuf(ah, txq->axq_qnum, bf->bf_daddr);
- ath_dbg(common, ATH_DBG_XMIT, "TXDP[%u] = %llx (%p)\n",
- txq->axq_qnum, ito64(bf->bf_daddr),
- bf->bf_desc);
- } else {
- *txq->axq_link = bf->bf_daddr;
+ if (txq->axq_link) {
+ ath9k_hw_set_desc_link(ah, txq->axq_link, bf->bf_daddr);
ath_dbg(common, ATH_DBG_XMIT,
"link[%u] (%p)=%llx (%p)\n",
txq->axq_qnum, txq->axq_link,
ito64(bf->bf_daddr), bf->bf_desc);
- }
- ath9k_hw_get_desc_link(ah, bf->bf_lastbf->bf_desc,
- &txq->axq_link);
+ } else if (!edma)
+ puttxbuf = true;
+
+ txq->axq_link = bf_last->bf_desc;
+ }
+
+ if (puttxbuf) {
+ TX_STAT_INC(txq->axq_qnum, puttxbuf);
+ ath9k_hw_puttxbuf(ah, txq->axq_qnum, bf->bf_daddr);
+ ath_dbg(common, ATH_DBG_XMIT, "TXDP[%u] = %llx (%p)\n",
+ txq->axq_qnum, ito64(bf->bf_daddr), bf->bf_desc);
+ }
+
+ if (!edma) {
TX_STAT_INC(txq->axq_qnum, txstart);
ath9k_hw_txstart(ah, txq->axq_qnum);
}
- txq->axq_depth++;
- if (bf_is_ampdu_not_probing(bf))
- txq->axq_ampdu_depth++;
+
+ if (!internal) {
+ txq->axq_depth++;
+ if (bf_is_ampdu_not_probing(bf))
+ txq->axq_ampdu_depth++;
+ }
}
static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_atx_tid *tid,
@@ -1470,7 +1427,7 @@ static void ath_tx_send_ampdu(struct ath
TX_STAT_INC(txctl->txq->axq_qnum, a_queued_hw);
bf->bf_lastbf = bf;
ath_buf_set_rate(sc, bf, fi->framelen);
- ath_tx_txqaddbuf(sc, txctl->txq, &bf_head);
+ ath_tx_txqaddbuf(sc, txctl->txq, &bf_head, false);
}
static void ath_tx_send_normal(struct ath_softc *sc, struct ath_txq *txq,
@@ -1490,7 +1447,7 @@ static void ath_tx_send_normal(struct at
bf->bf_lastbf = bf;
fi = get_frame_info(bf->bf_mpdu);
ath_buf_set_rate(sc, bf, fi->framelen);
- ath_tx_txqaddbuf(sc, txq, bf_head);
+ ath_tx_txqaddbuf(sc, txq, bf_head, false);
TX_STAT_INC(txq->axq_qnum, queued);
}
@@ -2077,6 +2034,38 @@ static void ath_tx_rc_status(struct ath_
tx_info->status.rates[tx_rateindex].count = ts->ts_longretry + 1;
}
+static void ath_tx_process_buffer(struct ath_softc *sc, struct ath_txq *txq,
+ struct ath_tx_status *ts, struct ath_buf *bf,
+ struct list_head *bf_head)
+{
+ int txok;
+
+ txq->axq_depth--;
+ txok = !(ts->ts_status & ATH9K_TXERR_MASK);
+ txq->axq_tx_inprogress = false;
+ if (bf_is_ampdu_not_probing(bf))
+ txq->axq_ampdu_depth--;
+
+ spin_unlock_bh(&txq->axq_lock);
+
+ if (!bf_isampdu(bf)) {
+ /*
+ * This frame is sent out as a single frame.
+ * Use hardware retry status for this frame.
+ */
+ if (ts->ts_status & ATH9K_TXERR_XRETRY)
+ bf->bf_state.bf_type |= BUF_XRETRY;
+ ath_tx_rc_status(sc, bf, ts, 1, txok ? 0 : 1, txok, true);
+ ath_tx_complete_buf(sc, bf, txq, bf_head, ts, txok, 0);
+ } else
+ ath_tx_complete_aggr(sc, txq, bf, bf_head, ts, txok, true);
+
+ spin_lock_bh(&txq->axq_lock);
+
+ if (sc->sc_flags & SC_OP_TXAGGR)
+ ath_txq_schedule(sc, txq);
+}
+
static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
{
struct ath_hw *ah = sc->sc_ah;
@@ -2085,20 +2074,18 @@ static void ath_tx_processq(struct ath_s
struct list_head bf_head;
struct ath_desc *ds;
struct ath_tx_status ts;
- int txok;
int status;
ath_dbg(common, ATH_DBG_QUEUE, "tx queue %d (%x), link %p\n",
txq->axq_qnum, ath9k_hw_gettxbuf(sc->sc_ah, txq->axq_qnum),
txq->axq_link);
+ spin_lock_bh(&txq->axq_lock);
for (;;) {
- spin_lock_bh(&txq->axq_lock);
if (list_empty(&txq->axq_q)) {
txq->axq_link = NULL;
if (sc->sc_flags & SC_OP_TXAGGR)
ath_txq_schedule(sc, txq);
- spin_unlock_bh(&txq->axq_lock);
break;
}
bf = list_first_entry(&txq->axq_q, struct ath_buf, list);
@@ -2114,13 +2101,11 @@ static void ath_tx_processq(struct ath_s
bf_held = NULL;
if (bf->bf_stale) {
bf_held = bf;
- if (list_is_last(&bf_held->list, &txq->axq_q)) {
- spin_unlock_bh(&txq->axq_lock);
+ if (list_is_last(&bf_held->list, &txq->axq_q))
break;
- } else {
- bf = list_entry(bf_held->list.next,
- struct ath_buf, list);
- }
+
+ bf = list_entry(bf_held->list.next, struct ath_buf,
+ list);
}
lastbf = bf->bf_lastbf;
@@ -2128,10 +2113,9 @@ static void ath_tx_processq(struct ath_s
memset(&ts, 0, sizeof(ts));
status = ath9k_hw_txprocdesc(ah, ds, &ts);
- if (status == -EINPROGRESS) {
- spin_unlock_bh(&txq->axq_lock);
+ if (status == -EINPROGRESS)
break;
- }
+
TX_STAT_INC(txq->axq_qnum, txprocdesc);
/*
@@ -2145,42 +2129,14 @@ static void ath_tx_processq(struct ath_s
list_cut_position(&bf_head,
&txq->axq_q, lastbf->list.prev);
- txq->axq_depth--;
- txok = !(ts.ts_status & ATH9K_TXERR_MASK);
- txq->axq_tx_inprogress = false;
- if (bf_held)
+ if (bf_held) {
list_del(&bf_held->list);
-
- if (bf_is_ampdu_not_probing(bf))
- txq->axq_ampdu_depth--;
-
- spin_unlock_bh(&txq->axq_lock);
-
- if (bf_held)
ath_tx_return_buffer(sc, bf_held);
-
- if (!bf_isampdu(bf)) {
- /*
- * This frame is sent out as a single frame.
- * Use hardware retry status for this frame.
- */
- if (ts.ts_status & ATH9K_TXERR_XRETRY)
- bf->bf_state.bf_type |= BUF_XRETRY;
- ath_tx_rc_status(sc, bf, &ts, 1, txok ? 0 : 1, txok, true);
}
- if (bf_isampdu(bf))
- ath_tx_complete_aggr(sc, txq, bf, &bf_head, &ts, txok,
- true);
- else
- ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, txok, 0);
-
- spin_lock_bh(&txq->axq_lock);
-
- if (sc->sc_flags & SC_OP_TXAGGR)
- ath_txq_schedule(sc, txq);
- spin_unlock_bh(&txq->axq_lock);
+ ath_tx_process_buffer(sc, txq, &ts, bf, &bf_head);
}
+ spin_unlock_bh(&txq->axq_lock);
}
static void ath_tx_complete_poll_work(struct work_struct *work)
@@ -2237,17 +2193,16 @@ void ath_tx_tasklet(struct ath_softc *sc
void ath_tx_edma_tasklet(struct ath_softc *sc)
{
- struct ath_tx_status txs;
+ struct ath_tx_status ts;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
struct ath_hw *ah = sc->sc_ah;
struct ath_txq *txq;
struct ath_buf *bf, *lastbf;
struct list_head bf_head;
int status;
- int txok;
for (;;) {
- status = ath9k_hw_txprocdesc(ah, NULL, (void *)&txs);
+ status = ath9k_hw_txprocdesc(ah, NULL, (void *)&ts);
if (status == -EINPROGRESS)
break;
if (status == -EIO) {
@@ -2257,12 +2212,13 @@ void ath_tx_edma_tasklet(struct ath_soft
}
/* Skip beacon completions */
- if (txs.qid == sc->beacon.beaconq)
+ if (ts.qid == sc->beacon.beaconq)
continue;
- txq = &sc->tx.txq[txs.qid];
+ txq = &sc->tx.txq[ts.qid];
spin_lock_bh(&txq->axq_lock);
+
if (list_empty(&txq->txq_fifo[txq->txq_tailidx])) {
spin_unlock_bh(&txq->axq_lock);
return;
@@ -2275,41 +2231,21 @@ void ath_tx_edma_tasklet(struct ath_soft
INIT_LIST_HEAD(&bf_head);
list_cut_position(&bf_head, &txq->txq_fifo[txq->txq_tailidx],
&lastbf->list);
- INCR(txq->txq_tailidx, ATH_TXFIFO_DEPTH);
- txq->axq_depth--;
- txq->axq_tx_inprogress = false;
- if (bf_is_ampdu_not_probing(bf))
- txq->axq_ampdu_depth--;
- spin_unlock_bh(&txq->axq_lock);
- txok = !(txs.ts_status & ATH9K_TXERR_MASK);
-
- if (!bf_isampdu(bf)) {
- if (txs.ts_status & ATH9K_TXERR_XRETRY)
- bf->bf_state.bf_type |= BUF_XRETRY;
- ath_tx_rc_status(sc, bf, &txs, 1, txok ? 0 : 1, txok, true);
- }
-
- if (bf_isampdu(bf))
- ath_tx_complete_aggr(sc, txq, bf, &bf_head, &txs,
- txok, true);
- else
- ath_tx_complete_buf(sc, bf, txq, &bf_head,
- &txs, txok, 0);
+ if (list_empty(&txq->txq_fifo[txq->txq_tailidx])) {
+ INCR(txq->txq_tailidx, ATH_TXFIFO_DEPTH);
- spin_lock_bh(&txq->axq_lock);
+ if (!list_empty(&txq->axq_q)) {
+ struct list_head bf_q;
- if (!list_empty(&txq->txq_fifo_pending)) {
- INIT_LIST_HEAD(&bf_head);
- bf = list_first_entry(&txq->txq_fifo_pending,
- struct ath_buf, list);
- list_cut_position(&bf_head,
- &txq->txq_fifo_pending,
- &bf->bf_lastbf->list);
- ath_tx_txqaddbuf(sc, txq, &bf_head);
- } else if (sc->sc_flags & SC_OP_TXAGGR)
- ath_txq_schedule(sc, txq);
+ INIT_LIST_HEAD(&bf_q);
+ txq->axq_link = NULL;
+ list_splice_tail_init(&txq->axq_q, &bf_q);
+ ath_tx_txqaddbuf(sc, txq, &bf_q, true);
+ }
+ }
+ ath_tx_process_buffer(sc, txq, &ts, bf, &bf_head);
spin_unlock_bh(&txq->axq_lock);
}
}
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -179,7 +179,7 @@ enum ATH_AGGR_STATUS {
struct ath_txq {
int mac80211_qnum; /* mac80211 queue number, -1 means not mac80211 Q */
u32 axq_qnum; /* ath9k hardware queue number */
- u32 *axq_link;
+ void *axq_link;
struct list_head axq_q;
spinlock_t axq_lock;
u32 axq_depth;
@@ -188,7 +188,6 @@ struct ath_txq {
bool axq_tx_inprogress;
struct list_head axq_acq;
struct list_head txq_fifo[ATH_TXFIFO_DEPTH];
- struct list_head txq_fifo_pending;
u8 txq_headidx;
u8 txq_tailidx;
int pending_frames;
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -62,8 +62,6 @@ static bool ath9k_has_pending_frames(str
if (txq->axq_depth || !list_empty(&txq->axq_acq))
pending = true;
- else if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
- pending = !list_empty(&txq->txq_fifo_pending);
spin_unlock_bh(&txq->axq_lock);
return pending;
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -586,7 +586,6 @@ static ssize_t read_file_xmit(struct fil
PRQLE("axq_q empty: ", axq_q);
PRQLE("axq_acq empty: ", axq_acq);
- PRQLE("txq_fifo_pending: ", txq_fifo_pending);
for (i = 0; i < ATH_TXFIFO_DEPTH; i++) {
snprintf(tmp, sizeof(tmp) - 1, "txq_fifo[%i] empty: ", i);
PRQLE(tmp, txq_fifo[i]);
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