1 files changed, 12 insertions, 44 deletions

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index c0f478b0a9a2..e4e73f061a22 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -19,7 +19,7 @@
 #include "ath9k.h"
 #include "btcoex.h"
 
-static u8 parse_mpdudensity(u8 mpdudensity)
+u8 ath9k_parse_mpdudensity(u8 mpdudensity)
 {
 	/*
 	 * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
@@ -150,6 +150,11 @@ static void __ath_cancel_work(struct ath_softc *sc)
 	cancel_work_sync(&sc->hw_check_work);
 	cancel_delayed_work_sync(&sc->tx_complete_work);
 	cancel_delayed_work_sync(&sc->hw_pll_work);
+
+#ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
+	if (ath9k_hw_mci_is_enabled(sc->sc_ah))
+		cancel_work_sync(&sc->mci_work);
+#endif
 }
 
 static void ath_cancel_work(struct ath_softc *sc)
@@ -317,6 +322,7 @@ static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta,
 			    struct ieee80211_vif *vif)
 {
 	struct ath_node *an;
+	u8 density;
 	an = (struct ath_node *)sta->drv_priv;
 
 #ifdef CONFIG_ATH9K_DEBUGFS
@@ -331,7 +337,8 @@ static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta,
 		ath_tx_node_init(sc, an);
 		an->maxampdu = 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 				     sta->ht_cap.ampdu_factor);
-		an->mpdudensity = parse_mpdudensity(sta->ht_cap.ampdu_density);
+		density = ath9k_parse_mpdudensity(sta->ht_cap.ampdu_density);
+		an->mpdudensity = density;
 	}
 }
 
@@ -513,24 +520,6 @@ irqreturn_t ath_isr(int irq, void *dev)
 		ath9k_hw_set_interrupts(ah);
 	}
 
-	if (status & ATH9K_INT_MIB) {
-		/*
-		 * Disable interrupts until we service the MIB
-		 * interrupt; otherwise it will continue to
-		 * fire.
-		 */
-		ath9k_hw_disable_interrupts(ah);
-		/*
-		 * Let the hal handle the event. We assume
-		 * it will clear whatever condition caused
-		 * the interrupt.
-		 */
-		spin_lock(&common->cc_lock);
-		ath9k_hw_proc_mib_event(ah);
-		spin_unlock(&common->cc_lock);
-		ath9k_hw_enable_interrupts(ah);
-	}
-
 	if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
 		if (status & ATH9K_INT_TIM_TIMER) {
 			if (ATH_DBG_WARN_ON_ONCE(sc->ps_idle))
@@ -956,14 +945,10 @@ static void ath9k_calculate_summary_state(struct ieee80211_hw *hw,
 	/*
 	 * Enable MIB interrupts when there are hardware phy counters.
 	 */
-	if ((iter_data.nstations + iter_data.nadhocs + iter_data.nmeshes) > 0) {
-		if (ah->config.enable_ani)
-			ah->imask |= ATH9K_INT_MIB;
+	if ((iter_data.nstations + iter_data.nadhocs + iter_data.nmeshes) > 0)
 		ah->imask |= ATH9K_INT_TSFOOR;
-	} else {
-		ah->imask &= ~ATH9K_INT_MIB;
+	else
 		ah->imask &= ~ATH9K_INT_TSFOOR;
-	}
 
 	ath9k_hw_set_interrupts(ah);
 
@@ -1033,15 +1018,6 @@ static int ath9k_add_interface(struct ieee80211_hw *hw,
 		}
 	}
 
-	if ((ah->opmode == NL80211_IFTYPE_ADHOC) ||
-	    ((vif->type == NL80211_IFTYPE_ADHOC) &&
-	     sc->nvifs > 0)) {
-		ath_err(common, "Cannot create ADHOC interface when other"
-			" interfaces already exist.\n");
-		ret = -EINVAL;
-		goto out;
-	}
-
 	ath_dbg(common, CONFIG, "Attach a VIF of type: %d\n", vif->type);
 
 	sc->nvifs++;
@@ -1066,15 +1042,6 @@ static int ath9k_change_interface(struct ieee80211_hw *hw,
 	mutex_lock(&sc->mutex);
 	ath9k_ps_wakeup(sc);
 
-	/* See if new interface type is valid. */
-	if ((new_type == NL80211_IFTYPE_ADHOC) &&
-	    (sc->nvifs > 1)) {
-		ath_err(common, "When using ADHOC, it must be the only"
-			" interface.\n");
-		ret = -EINVAL;
-		goto out;
-	}
-
 	if (ath9k_uses_beacons(new_type) &&
 	    !ath9k_uses_beacons(vif->type)) {
 		if (sc->nbcnvifs >= ATH_BCBUF) {
@@ -1258,6 +1225,7 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
 		if (ath_set_channel(sc, hw, &sc->sc_ah->channels[pos]) < 0) {
 			ath_err(common, "Unable to set channel\n");
 			mutex_unlock(&sc->mutex);
+			ath9k_ps_restore(sc);
 			return -EINVAL;
 		}