6 files changed, 48 insertions, 39 deletions

diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index a277cf6f339d..4866550ddd96 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -214,6 +214,7 @@ struct ath_frame_info {
         enum ath9k_key_type keytype;
         u8 keyix;
         u8 retries;
+        u8 rtscts_rate;
 };
 
 struct ath_buf_state {
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_main.c b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
index 2b8f61c210e1..abbd6effd60d 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_main.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
@@ -1496,6 +1496,7 @@ static void ath9k_htc_bss_info_changed(struct ieee80211_hw *hw,
                         priv->num_sta_assoc_vif++ : priv->num_sta_assoc_vif--;
 
                 if (priv->ah->opmode == NL80211_IFTYPE_STATION) {
+                        ath9k_htc_choose_set_bssid(priv);
                         if (bss_conf->assoc && (priv->num_sta_assoc_vif == 1))
                                 ath9k_htc_start_ani(priv);
                         else if (priv->num_sta_assoc_vif == 0)
@@ -1503,13 +1504,11 @@ static void ath9k_htc_bss_info_changed(struct ieee80211_hw *hw,
                 }
         }
 
-        if (changed & BSS_CHANGED_BSSID) {
+        if (changed & BSS_CHANGED_IBSS) {
                 if (priv->ah->opmode == NL80211_IFTYPE_ADHOC) {
                         common->curaid = bss_conf->aid;
                         memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
                         ath9k_htc_set_bssid(priv);
-                } else if (priv->ah->opmode == NL80211_IFTYPE_STATION) {
-                        ath9k_htc_choose_set_bssid(priv);
                 }
         }
 
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 7db1890448f2..995ca8e1302e 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -622,7 +622,7 @@ static int __ath9k_hw_init(struct ath_hw *ah)
 
         if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_AUTO) {
                 if (ah->hw_version.macVersion == AR_SREV_VERSION_5416_PCI ||
-                    ((AR_SREV_9160(ah) || AR_SREV_9280(ah)) &&
+                    ((AR_SREV_9160(ah) || AR_SREV_9280(ah) || AR_SREV_9287(ah)) &&
                      !ah->is_pciexpress)) {
                         ah->config.serialize_regmode =
                                 SER_REG_MODE_ON;
@@ -784,13 +784,25 @@ static void ath9k_hw_init_qos(struct ath_hw *ah)
 
 u32 ar9003_get_pll_sqsum_dvc(struct ath_hw *ah)
 {
+        struct ath_common *common = ath9k_hw_common(ah);
+        int i = 0;
+
         REG_CLR_BIT(ah, PLL3, PLL3_DO_MEAS_MASK);
         udelay(100);
         REG_SET_BIT(ah, PLL3, PLL3_DO_MEAS_MASK);
 
-        while ((REG_READ(ah, PLL4) & PLL4_MEAS_DONE) == 0)
+        while ((REG_READ(ah, PLL4) & PLL4_MEAS_DONE) == 0) {
+
                 udelay(100);
 
+                if (WARN_ON_ONCE(i >= 100)) {
+                        ath_err(common, "PLL4 meaurement not done\n");
+                        break;
+                }
+
+                i++;
+        }
+
         return (REG_READ(ah, PLL3) & SQSUM_DVC_MASK) >> 3;
 }
 EXPORT_SYMBOL(ar9003_get_pll_sqsum_dvc);
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 4de4473776ac..dac1a2709e3c 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -971,6 +971,15 @@ void ath_hw_pll_work(struct work_struct *work)
                                             hw_pll_work.work);
         u32 pll_sqsum;
 
+        /*
+         * ensure that the PLL WAR is executed only
+         * after the STA is associated (or) if the
+         * beaconing had started in interfaces that
+         * uses beacons.
+         */
+        if (!(sc->sc_flags & SC_OP_BEACONS))
+                return;
+
         if (AR_SREV_9485(sc->sc_ah)) {
 
                 ath9k_ps_wakeup(sc);
@@ -1443,15 +1452,6 @@ 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++;
@@ -1476,15 +1476,6 @@ 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) {
diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c
index e1fcc68124dc..0735aeb3b26c 100644
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -695,9 +695,9 @@ static bool ath_edma_get_buffers(struct ath_softc *sc,
                         __skb_unlink(skb, &rx_edma->rx_fifo);
                         list_add_tail(&bf->list, &sc->rx.rxbuf);
                         ath_rx_edma_buf_link(sc, qtype);
-                } else {
-                        bf = NULL;
                 }
+
+                bf = NULL;
         }
 
         *dest = bf;
@@ -822,7 +822,8 @@ static bool ath9k_rx_accept(struct ath_common *common,
          * descriptor does contain a valid key index. This has been observed
          * mostly with CCMP encryption.
          */
-        if (rx_stats->rs_keyix == ATH9K_RXKEYIX_INVALID)
+        if (rx_stats->rs_keyix == ATH9K_RXKEYIX_INVALID ||
+            !test_bit(rx_stats->rs_keyix, common->ccmp_keymap))
                 rx_stats->rs_status &= ~ATH9K_RXERR_KEYMISS;
 
         if (!rx_stats->rs_datalen) {
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index d59dd01d6cde..4d571394c7a8 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -938,6 +938,7 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf,
         struct ieee80211_tx_rate *rates;
         const struct ieee80211_rate *rate;
         struct ieee80211_hdr *hdr;
+        struct ath_frame_info *fi = get_frame_info(bf->bf_mpdu);
         int i;
         u8 rix = 0;
 
@@ -948,18 +949,7 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf,
 
         /* set dur_update_en for l-sig computation except for PS-Poll frames */
         info->dur_update = !ieee80211_is_pspoll(hdr->frame_control);
-
-        /*
-         * We check if Short Preamble is needed for the CTS rate by
-         * checking the BSS's global flag.
-         * But for the rate series, IEEE80211_TX_RC_USE_SHORT_PREAMBLE is used.
-         */
-        rate = ieee80211_get_rts_cts_rate(sc->hw, tx_info);
-        info->rtscts_rate = rate->hw_value;
-
-        if (tx_info->control.vif &&
-            tx_info->control.vif->bss_conf.use_short_preamble)
-                info->rtscts_rate |= rate->hw_value_short;
+        info->rtscts_rate = fi->rtscts_rate;
 
         for (i = 0; i < 4; i++) {
                 bool is_40, is_sgi, is_sp;
@@ -1001,13 +991,13 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf,
                 }
 
                 /* legacy rates */
+                rate = &sc->sbands[tx_info->band].bitrates[rates[i].idx];
                 if ((tx_info->band == IEEE80211_BAND_2GHZ) &&
                     !(rate->flags & IEEE80211_RATE_ERP_G))
                         phy = WLAN_RC_PHY_CCK;
                 else
                         phy = WLAN_RC_PHY_OFDM;
 
-                rate = &sc->sbands[tx_info->band].bitrates[rates[i].idx];
                 info->rates[i].Rate = rate->hw_value;
                 if (rate->hw_value_short) {
                         if (rates[i].flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
@@ -1776,10 +1766,22 @@ static void setup_frame_info(struct ieee80211_hw *hw, struct sk_buff *skb,
         struct ieee80211_sta *sta = tx_info->control.sta;
         struct ieee80211_key_conf *hw_key = tx_info->control.hw_key;
         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+        const struct ieee80211_rate *rate;
         struct ath_frame_info *fi = get_frame_info(skb);
         struct ath_node *an = NULL;
         enum ath9k_key_type keytype;
+        bool short_preamble = false;
+
+        /*
+         * We check if Short Preamble is needed for the CTS rate by
+         * checking the BSS's global flag.
+         * But for the rate series, IEEE80211_TX_RC_USE_SHORT_PREAMBLE is used.
+         */
+        if (tx_info->control.vif &&
+            tx_info->control.vif->bss_conf.use_short_preamble)
+                short_preamble = true;
 
+        rate = ieee80211_get_rts_cts_rate(hw, tx_info);
         keytype = ath9k_cmn_get_hw_crypto_keytype(skb);
 
         if (sta)
@@ -1794,6 +1796,9 @@ static void setup_frame_info(struct ieee80211_hw *hw, struct sk_buff *skb,
                 fi->keyix = ATH9K_TXKEYIX_INVALID;
         fi->keytype = keytype;
         fi->framelen = framelen;
+        fi->rtscts_rate = rate->hw_value;
+        if (short_preamble)
+                fi->rtscts_rate |= rate->hw_value_short;
 }
 
 u8 ath_txchainmask_reduction(struct ath_softc *sc, u8 chainmask, u32 rate)