Once the hw reset work is queued up and to bail out current
execution properly, use HW_RESET bit ops instead of work_pending.
As work_pending might return false when the queued work is in
execution. So it is not correct to use the work utility for
baining out.
Signed-off-by: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath9k/ath9k.h | 1 +
drivers/net/wireless/ath/ath9k/beacon.c | 4 ++--
drivers/net/wireless/ath/ath9k/debug.h | 2 ++
drivers/net/wireless/ath/ath9k/link.c | 13 ++++++-------
drivers/net/wireless/ath/ath9k/main.c | 14 ++++++++++----
drivers/net/wireless/ath/ath9k/mci.c | 2 +-
drivers/net/wireless/ath/ath9k/xmit.c | 13 ++++++-------
7 files changed, 28 insertions(+), 21 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index 79840d6..f65fd3a 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -445,6 +445,7 @@ void ath_ani_calibrate(unsigned long data);
void ath_start_ani(struct ath_common *common);
int ath_update_survey_stats(struct ath_softc *sc);
void ath_update_survey_nf(struct ath_softc *sc, int channel);
+void ath9k_queue_reset(struct ath_softc *sc, enum ath_reset_type type);
/**********/
/* BTCOEX */
diff --git a/drivers/net/wireless/ath/ath9k/beacon.c b/drivers/net/wireless/ath/ath9k/beacon.c
index 40775da..567a655 100644
--- a/drivers/net/wireless/ath/ath9k/beacon.c
+++ b/drivers/net/wireless/ath/ath9k/beacon.c
@@ -362,7 +362,7 @@ void ath_beacon_tasklet(unsigned long data)
int slot;
u32 bfaddr, bc = 0;
- if (work_pending(&sc->hw_reset_work)) {
+ if (test_bit(SC_OP_HW_RESET, &sc->sc_flags)) {
ath_dbg(common, RESET,
"reset work is pending, skip beaconing now\n");
return;
@@ -391,7 +391,7 @@ void ath_beacon_tasklet(unsigned long data)
ath_dbg(common, BSTUCK, "beacon is officially stuck\n");
sc->beacon.bmisscnt = 0;
set_bit(SC_OP_TSF_RESET, &sc->sc_flags);
- ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
+ ath9k_queue_reset(sc, RESET_TYPE_BEACON_STUCK);
}
return;
diff --git a/drivers/net/wireless/ath/ath9k/debug.h b/drivers/net/wireless/ath/ath9k/debug.h
index d0f851c..2078ecc 100644
--- a/drivers/net/wireless/ath/ath9k/debug.h
+++ b/drivers/net/wireless/ath/ath9k/debug.h
@@ -217,6 +217,8 @@ enum ath_reset_type {
RESET_TYPE_TX_HANG,
RESET_TYPE_PLL_HANG,
RESET_TYPE_MAC_HANG,
+ RESET_TYPE_BEACON_STUCK,
+ RESET_TYPE_MCI,
__RESET_TYPE_MAX
};
diff --git a/drivers/net/wireless/ath/ath9k/link.c b/drivers/net/wireless/ath/ath9k/link.c
index 91650fe..7463069 100644
--- a/drivers/net/wireless/ath/ath9k/link.c
+++ b/drivers/net/wireless/ath/ath9k/link.c
@@ -50,8 +50,7 @@ void ath_tx_complete_poll_work(struct work_struct *work)
if (needreset) {
ath_dbg(ath9k_hw_common(sc->sc_ah), RESET,
"tx hung, resetting the chip\n");
- RESET_STAT_INC(sc, RESET_TYPE_TX_HANG);
- ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
+ ath9k_queue_reset(sc, RESET_TYPE_TX_HANG);
return;
}
@@ -69,6 +68,7 @@ void ath_hw_check(struct work_struct *work)
unsigned long flags;
int busy;
u8 is_alive, nbeacon = 1;
+ enum ath_reset_type type;
ath9k_ps_wakeup(sc);
is_alive = ath9k_hw_check_alive(sc->sc_ah);
@@ -78,7 +78,7 @@ void ath_hw_check(struct work_struct *work)
else if (!is_alive && AR_SREV_9300(sc->sc_ah)) {
ath_dbg(common, RESET,
"DCU stuck is detected. Schedule chip reset\n");
- RESET_STAT_INC(sc, RESET_TYPE_MAC_HANG);
+ type = RESET_TYPE_MAC_HANG;
goto sched_reset;
}
@@ -90,7 +90,7 @@ void ath_hw_check(struct work_struct *work)
busy, sc->hw_busy_count + 1);
if (busy >= 99) {
if (++sc->hw_busy_count >= 3) {
- RESET_STAT_INC(sc, RESET_TYPE_BB_HANG);
+ type = RESET_TYPE_BB_HANG;
goto sched_reset;
}
} else if (busy >= 0) {
@@ -102,7 +102,7 @@ void ath_hw_check(struct work_struct *work)
goto out;
sched_reset:
- ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
+ ath9k_queue_reset(sc, type);
out:
ath9k_ps_restore(sc);
}
@@ -119,8 +119,7 @@ static bool ath_hw_pll_rx_hang_check(struct ath_softc *sc, u32 pll_sqsum)
count++;
if (count == 3) {
ath_dbg(common, RESET, "PLL WAR, resetting the chip\n");
- RESET_STAT_INC(sc, RESET_TYPE_PLL_HANG);
- ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
+ ath9k_queue_reset(sc, RESET_TYPE_PLL_HANG);
count = 0;
return true;
}
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 248e5b2..e31be58 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -381,11 +381,8 @@ void ath9k_tasklet(unsigned long data)
type = RESET_TYPE_FATAL_INT;
else
type = RESET_TYPE_BB_WATCHDOG;
-
- RESET_STAT_INC(sc, type);
#endif
- set_bit(SC_OP_HW_RESET, &sc->sc_flags);
- ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
+ ath9k_queue_reset(sc, type);
goto out;
}
@@ -575,6 +572,15 @@ static int ath_reset(struct ath_softc *sc, bool retry_tx)
return r;
}
+void ath9k_queue_reset(struct ath_softc *sc, enum ath_reset_type type)
+{
+#ifdef CONFIG_ATH9K_DEBUGFS
+ RESET_STAT_INC(sc, type);
+#endif
+ set_bit(SC_OP_HW_RESET, &sc->sc_flags);
+ ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
+}
+
void ath_reset_work(struct work_struct *work)
{
struct ath_softc *sc = container_of(work, struct ath_softc, hw_reset_work);
diff --git a/drivers/net/wireless/ath/ath9k/mci.c b/drivers/net/wireless/ath/ath9k/mci.c
index 87acff7..fb536e7 100644
--- a/drivers/net/wireless/ath/ath9k/mci.c
+++ b/drivers/net/wireless/ath/ath9k/mci.c
@@ -202,7 +202,7 @@ static void ath_mci_cal_msg(struct ath_softc *sc, u8 opcode, u8 *rx_payload)
case MCI_GPM_BT_CAL_REQ:
if (mci_hw->bt_state == MCI_BT_AWAKE) {
ar9003_mci_state(ah, MCI_STATE_SET_BT_CAL_START);
- ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
+ ath9k_queue_reset(sc, RESET_TYPE_MCI);
}
ath_dbg(common, MCI, "MCI State : %d\n", mci_hw->bt_state);
break;
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index cafb4a0..20929e9 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -614,10 +614,8 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
rcu_read_unlock();
- if (needreset) {
- RESET_STAT_INC(sc, RESET_TYPE_TX_ERROR);
- ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
- }
+ if (needreset)
+ ath9k_queue_reset(sc, RESET_TYPE_TX_ERROR);
}
static bool ath_lookup_legacy(struct ath_buf *bf)
@@ -1586,7 +1584,8 @@ void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq)
struct ath_atx_ac *ac, *ac_tmp, *last_ac;
struct ath_atx_tid *tid, *last_tid;
- if (work_pending(&sc->hw_reset_work) || list_empty(&txq->axq_acq) ||
+ if (test_bit(SC_OP_HW_RESET, &sc->sc_flags) ||
+ list_empty(&txq->axq_acq) ||
txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH)
return;
@@ -2191,7 +2190,7 @@ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
ath_txq_lock(sc, txq);
for (;;) {
- if (work_pending(&sc->hw_reset_work))
+ if (test_bit(SC_OP_HW_RESET, &sc->sc_flags))
break;
if (list_empty(&txq->axq_q)) {
@@ -2274,7 +2273,7 @@ void ath_tx_edma_tasklet(struct ath_softc *sc)
int status;
for (;;) {
- if (work_pending(&sc->hw_reset_work))
+ if (test_bit(SC_OP_HW_RESET, &sc->sc_flags))
break;
status = ath9k_hw_txprocdesc(ah, NULL, (void *)&ts);
--
1.7.11.1
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
