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--- a/drivers/net/wireless/ath/ath9k/mac.c
+++ b/drivers/net/wireless/ath/ath9k/mac.c
@@ -171,84 +171,31 @@ void ath9k_hw_abort_tx_dma(struct ath_hw
}
EXPORT_SYMBOL(ath9k_hw_abort_tx_dma);
-bool ath9k_hw_stoptxdma(struct ath_hw *ah, u32 q)
+bool ath9k_hw_stop_dma_queue(struct ath_hw *ah, u32 q)
{
-#define ATH9K_TX_STOP_DMA_TIMEOUT 4000 /* usec */
+#define ATH9K_TX_STOP_DMA_TIMEOUT 1000 /* usec */
#define ATH9K_TIME_QUANTUM 100 /* usec */
- struct ath_common *common = ath9k_hw_common(ah);
- struct ath9k_hw_capabilities *pCap = &ah->caps;
- struct ath9k_tx_queue_info *qi;
- u32 tsfLow, j, wait;
- u32 wait_time = ATH9K_TX_STOP_DMA_TIMEOUT / ATH9K_TIME_QUANTUM;
-
- if (q >= pCap->total_queues) {
- ath_dbg(common, ATH_DBG_QUEUE,
- "Stopping TX DMA, invalid queue: %u\n", q);
- return false;
- }
-
- qi = &ah->txq[q];
- if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
- ath_dbg(common, ATH_DBG_QUEUE,
- "Stopping TX DMA, inactive queue: %u\n", q);
- return false;
- }
+ int wait_time = ATH9K_TX_STOP_DMA_TIMEOUT / ATH9K_TIME_QUANTUM;
+ int wait;
REG_WRITE(ah, AR_Q_TXD, 1 << q);
for (wait = wait_time; wait != 0; wait--) {
- if (ath9k_hw_numtxpending(ah, q) == 0)
- break;
- udelay(ATH9K_TIME_QUANTUM);
- }
-
- if (ath9k_hw_numtxpending(ah, q)) {
- ath_dbg(common, ATH_DBG_QUEUE,
- "%s: Num of pending TX Frames %d on Q %d\n",
- __func__, ath9k_hw_numtxpending(ah, q), q);
-
- for (j = 0; j < 2; j++) {
- tsfLow = REG_READ(ah, AR_TSF_L32);
- REG_WRITE(ah, AR_QUIET2,
- SM(10, AR_QUIET2_QUIET_DUR));
- REG_WRITE(ah, AR_QUIET_PERIOD, 100);
- REG_WRITE(ah, AR_NEXT_QUIET_TIMER, tsfLow >> 10);
- REG_SET_BIT(ah, AR_TIMER_MODE,
- AR_QUIET_TIMER_EN);
-
- if ((REG_READ(ah, AR_TSF_L32) >> 10) == (tsfLow >> 10))
- break;
-
- ath_dbg(common, ATH_DBG_QUEUE,
- "TSF has moved while trying to set quiet time TSF: 0x%08x\n",
- tsfLow);
- }
-
- REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH);
-
- udelay(200);
- REG_CLR_BIT(ah, AR_TIMER_MODE, AR_QUIET_TIMER_EN);
-
- wait = wait_time;
- while (ath9k_hw_numtxpending(ah, q)) {
- if ((--wait) == 0) {
- ath_err(common,
- "Failed to stop TX DMA in 100 msec after killing last frame\n");
- break;
- }
+ if (wait != wait_time)
udelay(ATH9K_TIME_QUANTUM);
- }
- REG_CLR_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH);
+ if (ath9k_hw_numtxpending(ah, q) == 0)
+ break;
}
REG_WRITE(ah, AR_Q_TXD, 0);
+
return wait != 0;
#undef ATH9K_TX_STOP_DMA_TIMEOUT
#undef ATH9K_TIME_QUANTUM
}
-EXPORT_SYMBOL(ath9k_hw_stoptxdma);
+EXPORT_SYMBOL(ath9k_hw_stop_dma_queue);
void ath9k_hw_gettxintrtxqs(struct ath_hw *ah, u32 *txqs)
{
--- a/drivers/net/wireless/ath/ath9k/mac.h
+++ b/drivers/net/wireless/ath/ath9k/mac.h
@@ -675,7 +675,7 @@ void ath9k_hw_txstart(struct ath_hw *ah,
void ath9k_hw_cleartxdesc(struct ath_hw *ah, void *ds);
u32 ath9k_hw_numtxpending(struct ath_hw *ah, u32 q);
bool ath9k_hw_updatetxtriglevel(struct ath_hw *ah, bool bIncTrigLevel);
-bool ath9k_hw_stoptxdma(struct ath_hw *ah, u32 q);
+bool ath9k_hw_stop_dma_queue(struct ath_hw *ah, u32 q);
void ath9k_hw_abort_tx_dma(struct ath_hw *ah);
void ath9k_hw_gettxintrtxqs(struct ath_hw *ah, u32 *txqs);
bool ath9k_hw_set_txq_props(struct ath_hw *ah, int q,
--- a/drivers/net/wireless/ath/ath9k/beacon.c
+++ b/drivers/net/wireless/ath/ath9k/beacon.c
@@ -373,6 +373,7 @@ void ath_beacon_tasklet(unsigned long da
ath_dbg(common, ATH_DBG_BSTUCK,
"missed %u consecutive beacons\n",
sc->beacon.bmisscnt);
+ ath9k_hw_stop_dma_queue(ah, sc->beacon.beaconq);
ath9k_hw_bstuck_nfcal(ah);
} else if (sc->beacon.bmisscnt >= BSTUCK_THRESH) {
ath_dbg(common, ATH_DBG_BSTUCK,
@@ -450,16 +451,6 @@ void ath_beacon_tasklet(unsigned long da
sc->beacon.updateslot = OK;
}
if (bfaddr != 0) {
- /*
- * Stop any current dma and put the new frame(s) on the queue.
- * This should never fail since we check above that no frames
- * are still pending on the queue.
- */
- if (!ath9k_hw_stoptxdma(ah, sc->beacon.beaconq)) {
- ath_err(common, "beacon queue %u did not stop?\n",
- sc->beacon.beaconq);
- }
-
/* NB: cabq traffic should already be queued and primed */
ath9k_hw_puttxbuf(ah, sc->beacon.beaconq, bfaddr);
ath9k_hw_txstart(ah, sc->beacon.beaconq);
@@ -780,7 +771,7 @@ void ath9k_set_beaconing_status(struct a
ah->imask &= ~ATH9K_INT_SWBA;
ath9k_hw_set_interrupts(ah, ah->imask);
tasklet_kill(&sc->bcon_tasklet);
- ath9k_hw_stoptxdma(ah, sc->beacon.beaconq);
+ ath9k_hw_stop_dma_queue(ah, sc->beacon.beaconq);
}
ath9k_ps_restore(sc);
}
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