ath9k_hw: Wait BT calibration to complete

Whenever BT calibration requested, WLAN has to wait for the
calibration to be completed. But right now we defer the waiting
which might cause BT calibration to fail. Fix that.

Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mci.c b/drivers/net/wireless/ath/ath9k/ar9003_mci.c
index ea49d61..b2e39e8 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/ar9003_mci.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_mci.c
@@ -714,6 +714,7 @@ bool ar9003_mci_start_reset(struct ath_hw *ah, struct ath9k_channel *chan)
 
        return true;
 }
+EXPORT_SYMBOL(ar9003_mci_start_reset);
 
 int ar9003_mci_end_reset(struct ath_hw *ah, struct ath9k_channel *chan,
                         struct ath9k_hw_cal_data *caldata)

diff --git a/drivers/net/wireless/ath/ath9k/debug.h b/drivers/net/wireless/ath/ath9k/debug.h
index 61341cd..2ed9785 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/debug.h
+++ b/drivers/net/wireless/ath/ath9k/debug.h
@@ -41,7 +41,6 @@ enum ath_reset_type {
        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/mci.c b/drivers/net/wireless/ath/ath9k/mci.c
index 9ee1f89..8f0e8d9 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/mci.c
+++ b/drivers/net/wireless/ath/ath9k/mci.c
@@ -191,6 +191,23 @@ skip_tuning:
        ath9k_btcoex_timer_resume(sc);
 }
 
+static void ath_mci_wait_btcal_done(struct ath_softc *sc)
+{
+       struct ath_hw *ah = sc->sc_ah;
+
+       /* Stop tx & rx */
+       ieee80211_stop_queues(sc->hw);
+       ath_stoprecv(sc);
+       ath_drain_all_txq(sc, false);
+
+       /* Wait for cal done */
+       ar9003_mci_start_reset(ah, ah->curchan);
+
+       /* Resume tx & rx */
+       ath_startrecv(sc);
+       ieee80211_wake_queues(sc->hw);
+}
+
 static void ath_mci_cal_msg(struct ath_softc *sc, u8 opcode, u8 *rx_payload)
 {
        struct ath_hw *ah = sc->sc_ah;
@@ -202,7 +219,7 @@ 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) {
                        mci_hw->bt_state = MCI_BT_CAL_START;
-                       ath9k_queue_reset(sc, RESET_TYPE_MCI);
+                       ath_mci_wait_btcal_done(sc);
                }
                ath_dbg(common, MCI, "MCI State : %d\n", mci_hw->bt_state);
                break;