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@@ -0,0 +1,366 @@
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+--- a/drivers/net/wireless/ath/ath9k/ath9k.h
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++++ b/drivers/net/wireless/ath/ath9k/ath9k.h
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+@@ -189,7 +189,6 @@ struct ath_txq {
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+ u32 axq_ampdu_depth;
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+ bool stopped;
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+ bool axq_tx_inprogress;
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+- bool txq_flush_inprogress;
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+ struct list_head axq_acq;
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+ struct list_head txq_fifo[ATH_TXFIFO_DEPTH];
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+ struct list_head txq_fifo_pending;
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+--- a/drivers/net/wireless/ath/ath9k/beacon.c
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++++ b/drivers/net/wireless/ath/ath9k/beacon.c
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+@@ -373,6 +373,7 @@ void ath_beacon_tasklet(unsigned long da
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+ ath_dbg(common, ATH_DBG_BSTUCK,
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+ "missed %u consecutive beacons\n",
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+ sc->beacon.bmisscnt);
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++ ath9k_hw_stop_dma_queue(ah, sc->beacon.beaconq);
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+ ath9k_hw_bstuck_nfcal(ah);
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+ } else if (sc->beacon.bmisscnt >= BSTUCK_THRESH) {
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+ ath_dbg(common, ATH_DBG_BSTUCK,
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+@@ -450,16 +451,6 @@ void ath_beacon_tasklet(unsigned long da
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+ sc->beacon.updateslot = OK;
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+ }
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+ if (bfaddr != 0) {
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+- /*
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+- * Stop any current dma and put the new frame(s) on the queue.
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+- * This should never fail since we check above that no frames
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+- * are still pending on the queue.
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+- */
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+- if (!ath9k_hw_stoptxdma(ah, sc->beacon.beaconq)) {
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+- ath_err(common, "beacon queue %u did not stop?\n",
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+- sc->beacon.beaconq);
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+- }
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+-
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+ /* NB: cabq traffic should already be queued and primed */
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+ ath9k_hw_puttxbuf(ah, sc->beacon.beaconq, bfaddr);
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+ ath9k_hw_txstart(ah, sc->beacon.beaconq);
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+@@ -780,7 +771,7 @@ void ath9k_set_beaconing_status(struct a
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+ ah->imask &= ~ATH9K_INT_SWBA;
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+ ath9k_hw_set_interrupts(ah, ah->imask);
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+ tasklet_kill(&sc->bcon_tasklet);
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+- ath9k_hw_stoptxdma(ah, sc->beacon.beaconq);
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++ ath9k_hw_stop_dma_queue(ah, sc->beacon.beaconq);
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+ }
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+ ath9k_ps_restore(sc);
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+ }
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+--- a/drivers/net/wireless/ath/ath9k/hw.h
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++++ b/drivers/net/wireless/ath/ath9k/hw.h
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+@@ -95,9 +95,9 @@
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+ #define REG_READ_FIELD(_a, _r, _f) \
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+ (((REG_READ(_a, _r) & _f) >> _f##_S))
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+ #define REG_SET_BIT(_a, _r, _f) \
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+- REG_WRITE(_a, _r, REG_READ(_a, _r) | _f)
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++ REG_WRITE(_a, _r, REG_READ(_a, _r) | (_f))
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+ #define REG_CLR_BIT(_a, _r, _f) \
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+- REG_WRITE(_a, _r, REG_READ(_a, _r) & ~_f)
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++ REG_WRITE(_a, _r, REG_READ(_a, _r) & ~(_f))
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+
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+ #define DO_DELAY(x) do { \
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+ if ((++(x) % 64) == 0) \
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+--- a/drivers/net/wireless/ath/ath9k/mac.c
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++++ b/drivers/net/wireless/ath/ath9k/mac.c
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+@@ -143,84 +143,59 @@ bool ath9k_hw_updatetxtriglevel(struct a
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+ }
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+ EXPORT_SYMBOL(ath9k_hw_updatetxtriglevel);
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+
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+-bool ath9k_hw_stoptxdma(struct ath_hw *ah, u32 q)
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++void ath9k_hw_abort_tx_dma(struct ath_hw *ah)
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+ {
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+-#define ATH9K_TX_STOP_DMA_TIMEOUT 4000 /* usec */
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+-#define ATH9K_TIME_QUANTUM 100 /* usec */
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+- struct ath_common *common = ath9k_hw_common(ah);
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+- struct ath9k_hw_capabilities *pCap = &ah->caps;
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+- struct ath9k_tx_queue_info *qi;
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+- u32 tsfLow, j, wait;
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+- u32 wait_time = ATH9K_TX_STOP_DMA_TIMEOUT / ATH9K_TIME_QUANTUM;
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++ int i, q;
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+
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+- if (q >= pCap->total_queues) {
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+- ath_dbg(common, ATH_DBG_QUEUE,
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+- "Stopping TX DMA, invalid queue: %u\n", q);
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+- return false;
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+- }
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++ REG_WRITE(ah, AR_Q_TXD, AR_Q_TXD_M);
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+
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+- qi = &ah->txq[q];
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+- if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
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+- ath_dbg(common, ATH_DBG_QUEUE,
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+- "Stopping TX DMA, inactive queue: %u\n", q);
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+- return false;
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+- }
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++ REG_SET_BIT(ah, AR_PCU_MISC, AR_PCU_FORCE_QUIET_COLL | AR_PCU_CLEAR_VMF);
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++ REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH);
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++ REG_SET_BIT(ah, AR_D_GBL_IFS_MISC, AR_D_GBL_IFS_MISC_IGNORE_BACKOFF);
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+
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+- REG_WRITE(ah, AR_Q_TXD, 1 << q);
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++ for (q = 0; q < AR_NUM_QCU; q++) {
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++ for (i = 0; i < 1000; i++) {
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++ if (i)
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++ udelay(5);
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+
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+- for (wait = wait_time; wait != 0; wait--) {
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+- if (ath9k_hw_numtxpending(ah, q) == 0)
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+- break;
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+- udelay(ATH9K_TIME_QUANTUM);
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++ if (!ath9k_hw_numtxpending(ah, q))
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++ break;
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++ }
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+ }
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+
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+- if (ath9k_hw_numtxpending(ah, q)) {
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+- ath_dbg(common, ATH_DBG_QUEUE,
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+- "%s: Num of pending TX Frames %d on Q %d\n",
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+- __func__, ath9k_hw_numtxpending(ah, q), q);
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+-
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+- for (j = 0; j < 2; j++) {
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+- tsfLow = REG_READ(ah, AR_TSF_L32);
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+- REG_WRITE(ah, AR_QUIET2,
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+- SM(10, AR_QUIET2_QUIET_DUR));
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+- REG_WRITE(ah, AR_QUIET_PERIOD, 100);
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+- REG_WRITE(ah, AR_NEXT_QUIET_TIMER, tsfLow >> 10);
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+- REG_SET_BIT(ah, AR_TIMER_MODE,
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+- AR_QUIET_TIMER_EN);
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+-
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+- if ((REG_READ(ah, AR_TSF_L32) >> 10) == (tsfLow >> 10))
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+- break;
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++ REG_CLR_BIT(ah, AR_PCU_MISC, AR_PCU_FORCE_QUIET_COLL | AR_PCU_CLEAR_VMF);
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++ REG_CLR_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH);
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++ REG_CLR_BIT(ah, AR_D_GBL_IFS_MISC, AR_D_GBL_IFS_MISC_IGNORE_BACKOFF);
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+
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+- ath_dbg(common, ATH_DBG_QUEUE,
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+- "TSF has moved while trying to set quiet time TSF: 0x%08x\n",
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+- tsfLow);
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+- }
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++ REG_WRITE(ah, AR_Q_TXD, 0);
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++}
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++EXPORT_SYMBOL(ath9k_hw_abort_tx_dma);
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+
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+- REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH);
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++bool ath9k_hw_stop_dma_queue(struct ath_hw *ah, u32 q)
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++{
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++#define ATH9K_TX_STOP_DMA_TIMEOUT 1000 /* usec */
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++#define ATH9K_TIME_QUANTUM 100 /* usec */
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++ int wait_time = ATH9K_TX_STOP_DMA_TIMEOUT / ATH9K_TIME_QUANTUM;
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++ int wait;
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+
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+- udelay(200);
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+- REG_CLR_BIT(ah, AR_TIMER_MODE, AR_QUIET_TIMER_EN);
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++ REG_WRITE(ah, AR_Q_TXD, 1 << q);
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+
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+- wait = wait_time;
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+- while (ath9k_hw_numtxpending(ah, q)) {
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+- if ((--wait) == 0) {
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+- ath_err(common,
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+- "Failed to stop TX DMA in 100 msec after killing last frame\n");
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+- break;
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+- }
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++ for (wait = wait_time; wait != 0; wait--) {
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++ if (wait != wait_time)
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+ udelay(ATH9K_TIME_QUANTUM);
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+- }
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+
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+- REG_CLR_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH);
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++ if (ath9k_hw_numtxpending(ah, q) == 0)
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++ break;
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+ }
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+
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+ REG_WRITE(ah, AR_Q_TXD, 0);
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++
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+ return wait != 0;
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+
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+ #undef ATH9K_TX_STOP_DMA_TIMEOUT
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+ #undef ATH9K_TIME_QUANTUM
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+ }
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+-EXPORT_SYMBOL(ath9k_hw_stoptxdma);
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++EXPORT_SYMBOL(ath9k_hw_stop_dma_queue);
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+
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+ void ath9k_hw_gettxintrtxqs(struct ath_hw *ah, u32 *txqs)
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+ {
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+--- a/drivers/net/wireless/ath/ath9k/mac.h
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++++ b/drivers/net/wireless/ath/ath9k/mac.h
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+@@ -676,7 +676,8 @@ void ath9k_hw_txstart(struct ath_hw *ah,
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+ void ath9k_hw_cleartxdesc(struct ath_hw *ah, void *ds);
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+ u32 ath9k_hw_numtxpending(struct ath_hw *ah, u32 q);
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+ bool ath9k_hw_updatetxtriglevel(struct ath_hw *ah, bool bIncTrigLevel);
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+-bool ath9k_hw_stoptxdma(struct ath_hw *ah, u32 q);
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++bool ath9k_hw_stop_dma_queue(struct ath_hw *ah, u32 q);
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++void ath9k_hw_abort_tx_dma(struct ath_hw *ah);
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+ void ath9k_hw_gettxintrtxqs(struct ath_hw *ah, u32 *txqs);
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+ bool ath9k_hw_set_txq_props(struct ath_hw *ah, int q,
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+ const struct ath9k_tx_queue_info *qinfo);
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+--- a/drivers/net/wireless/ath/ath9k/main.c
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++++ b/drivers/net/wireless/ath/ath9k/main.c
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+@@ -2128,56 +2128,42 @@ static void ath9k_set_coverage_class(str
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+
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+ static void ath9k_flush(struct ieee80211_hw *hw, bool drop)
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+ {
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+-#define ATH_FLUSH_TIMEOUT 60 /* ms */
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+ struct ath_softc *sc = hw->priv;
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+- struct ath_txq *txq = NULL;
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+- struct ath_hw *ah = sc->sc_ah;
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+- struct ath_common *common = ath9k_hw_common(ah);
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+- int i, j, npend = 0;
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++ int timeout = 200; /* ms */
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++ int i, j;
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+
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++ ath9k_ps_wakeup(sc);
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+ mutex_lock(&sc->mutex);
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+
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+ cancel_delayed_work_sync(&sc->tx_complete_work);
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+
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+- for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
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+- if (!ATH_TXQ_SETUP(sc, i))
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+- continue;
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+- txq = &sc->tx.txq[i];
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+-
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+- if (!drop) {
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+- for (j = 0; j < ATH_FLUSH_TIMEOUT; j++) {
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+- if (!ath9k_has_pending_frames(sc, txq))
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+- break;
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+- usleep_range(1000, 2000);
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+- }
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+- }
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++ if (drop)
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++ timeout = 1;
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++
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++ for (j = 0; j < timeout; j++) {
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++ int npend = 0;
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++
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++ if (j)
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++ usleep_range(1000, 2000);
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+
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+- if (drop || ath9k_has_pending_frames(sc, txq)) {
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+- ath_dbg(common, ATH_DBG_QUEUE, "Drop frames from hw queue:%d\n",
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+- txq->axq_qnum);
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+- spin_lock_bh(&txq->axq_lock);
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+- txq->txq_flush_inprogress = true;
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+- spin_unlock_bh(&txq->axq_lock);
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+-
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+- ath9k_ps_wakeup(sc);
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+- ath9k_hw_stoptxdma(ah, txq->axq_qnum);
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+- npend = ath9k_hw_numtxpending(ah, txq->axq_qnum);
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+- ath9k_ps_restore(sc);
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+- if (npend)
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+- break;
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++ for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
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++ if (!ATH_TXQ_SETUP(sc, i))
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++ continue;
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+
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+- ath_draintxq(sc, txq, false);
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+- txq->txq_flush_inprogress = false;
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++ npend += ath9k_has_pending_frames(sc, &sc->tx.txq[i]);
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+ }
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++
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++ if (!npend)
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++ goto out;
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+ }
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+
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+- if (npend) {
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++ if (!ath_drain_all_txq(sc, false))
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+ ath_reset(sc, false);
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+- txq->txq_flush_inprogress = false;
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+- }
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+
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++out:
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+ ieee80211_queue_delayed_work(hw, &sc->tx_complete_work, 0);
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+ mutex_unlock(&sc->mutex);
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++ ath9k_ps_restore(sc);
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+ }
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+
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+ struct ieee80211_ops ath9k_ops = {
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+--- a/drivers/net/wireless/ath/ath9k/xmit.c
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++++ b/drivers/net/wireless/ath/ath9k/xmit.c
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+@@ -166,7 +166,7 @@ static void ath_tx_flush_tid(struct ath_
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+ fi = get_frame_info(bf->bf_mpdu);
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+ if (fi->retries) {
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+ ath_tx_update_baw(sc, tid, fi->seqno);
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+- ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0, 0);
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++ ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0, 1);
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+ } else {
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+ ath_tx_send_normal(sc, txq, NULL, &bf_head);
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+ }
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+@@ -1194,16 +1194,14 @@ bool ath_drain_all_txq(struct ath_softc
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+ if (sc->sc_flags & SC_OP_INVALID)
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+ return true;
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+
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+- /* Stop beacon queue */
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+- ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
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++ ath9k_hw_abort_tx_dma(ah);
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+
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+- /* Stop data queues */
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++ /* Check if any queue remains active */
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+ for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
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+- if (ATH_TXQ_SETUP(sc, i)) {
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+- txq = &sc->tx.txq[i];
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+- ath9k_hw_stoptxdma(ah, txq->axq_qnum);
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+- npend += ath9k_hw_numtxpending(ah, txq->axq_qnum);
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+- }
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++ if (!ATH_TXQ_SETUP(sc, i))
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++ continue;
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++
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++ npend += ath9k_hw_numtxpending(ah, sc->tx.txq[i].axq_qnum);
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+ }
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+
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+ if (npend)
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+@@ -2014,8 +2012,7 @@ static void ath_tx_processq(struct ath_s
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+ spin_lock_bh(&txq->axq_lock);
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+ if (list_empty(&txq->axq_q)) {
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+ txq->axq_link = NULL;
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+- if (sc->sc_flags & SC_OP_TXAGGR &&
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+- !txq->txq_flush_inprogress)
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++ if (sc->sc_flags & SC_OP_TXAGGR)
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+ ath_txq_schedule(sc, txq);
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+ spin_unlock_bh(&txq->axq_lock);
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+ break;
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+@@ -2096,7 +2093,7 @@ static void ath_tx_processq(struct ath_s
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+
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+ spin_lock_bh(&txq->axq_lock);
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+
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+- if (sc->sc_flags & SC_OP_TXAGGR && !txq->txq_flush_inprogress)
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++ if (sc->sc_flags & SC_OP_TXAGGR)
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+ ath_txq_schedule(sc, txq);
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+ spin_unlock_bh(&txq->axq_lock);
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+ }
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+@@ -2267,18 +2264,17 @@ void ath_tx_edma_tasklet(struct ath_soft
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+
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+ spin_lock_bh(&txq->axq_lock);
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+
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+- if (!txq->txq_flush_inprogress) {
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+- if (!list_empty(&txq->txq_fifo_pending)) {
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+- INIT_LIST_HEAD(&bf_head);
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+- bf = list_first_entry(&txq->txq_fifo_pending,
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+- struct ath_buf, list);
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+- 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);
|
|
|
+- }
|
|
|
++ 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);
|
|
|
++
|
|
|
+ spin_unlock_bh(&txq->axq_lock);
|
|
|
+ }
|
|
|
+ }
|
|
|
+--- a/net/mac80211/chan.c
|
|
|
++++ b/net/mac80211/chan.c
|
|
|
+@@ -77,6 +77,9 @@ bool ieee80211_set_channel_type(struct i
|
|
|
+ switch (tmp->vif.bss_conf.channel_type) {
|
|
|
+ case NL80211_CHAN_NO_HT:
|
|
|
+ case NL80211_CHAN_HT20:
|
|
|
++ if (superchan > tmp->vif.bss_conf.channel_type)
|
|
|
++ break;
|
|
|
++
|
|
|
+ superchan = tmp->vif.bss_conf.channel_type;
|
|
|
+ break;
|
|
|
+ case NL80211_CHAN_HT40PLUS:
|