3 files changed, 44 insertions, 11 deletions

diff --git a/drivers/net/wireless/ath/ath9k/hif_usb.c b/drivers/net/wireless/ath/ath9k/hif_usb.c
index f521dfa2f194..27ff1ca2631f 100644
--- a/drivers/net/wireless/ath/ath9k/hif_usb.c
+++ b/drivers/net/wireless/ath/ath9k/hif_usb.c
@@ -42,8 +42,6 @@ static const struct usb_device_id ath9k_hif_usb_ids[] = {
 
 	{ USB_DEVICE(0x0cf3, 0x7015),
 	  .driver_info = AR9287_USB },  /* Atheros */
-	{ USB_DEVICE(0x1668, 0x1200),
-	  .driver_info = AR9287_USB },  /* Verizon */
 
 	{ USB_DEVICE(0x0cf3, 0x7010),
 	  .driver_info = AR9280_USB },  /* Atheros */
@@ -534,6 +532,24 @@ static struct ath9k_htc_hif hif_usb = {
 	.send = hif_usb_send,
 };
 
+/* Need to free remain_skb allocated in ath9k_hif_usb_rx_stream
+ * in case ath9k_hif_usb_rx_stream wasn't called next time to
+ * process the buffer and subsequently free it.
+ */
+static void ath9k_hif_usb_free_rx_remain_skb(struct hif_device_usb *hif_dev)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&hif_dev->rx_lock, flags);
+	if (hif_dev->remain_skb) {
+		dev_kfree_skb_any(hif_dev->remain_skb);
+		hif_dev->remain_skb = NULL;
+		hif_dev->rx_remain_len = 0;
+		RX_STAT_INC(hif_dev, skb_dropped);
+	}
+	spin_unlock_irqrestore(&hif_dev->rx_lock, flags);
+}
+
 static void ath9k_hif_usb_rx_stream(struct hif_device_usb *hif_dev,
 				    struct sk_buff *skb)
 {
@@ -868,6 +884,7 @@ err:
 static void ath9k_hif_usb_dealloc_rx_urbs(struct hif_device_usb *hif_dev)
 {
 	usb_kill_anchored_urbs(&hif_dev->rx_submitted);
+	ath9k_hif_usb_free_rx_remain_skb(hif_dev);
 }
 
 static int ath9k_hif_usb_alloc_rx_urbs(struct hif_device_usb *hif_dev)
diff --git a/drivers/net/wireless/ath/ath9k/mci.c b/drivers/net/wireless/ath/ath9k/mci.c
index 3363fc4e8966..a0845002d6fe 100644
--- a/drivers/net/wireless/ath/ath9k/mci.c
+++ b/drivers/net/wireless/ath/ath9k/mci.c
@@ -646,9 +646,7 @@ void ath9k_mci_update_wlan_channels(struct ath_softc *sc, bool allow_all)
 	struct ath_hw *ah = sc->sc_ah;
 	struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
 	struct ath9k_channel *chan = ah->curchan;
-	static const u32 channelmap[] = {
-		0x00000000, 0xffff0000, 0xffffffff, 0x7fffffff
-	};
+	u32 channelmap[] = {0x00000000, 0xffff0000, 0xffffffff, 0x7fffffff};
 	int i;
 	s16 chan_start, chan_end;
 	u16 wlan_chan;
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index ef9a8e0b75e6..f6f2ab7a63ff 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -34,6 +34,12 @@
 #define NUM_SYMBOLS_PER_USEC(_usec) (_usec >> 2)
 #define NUM_SYMBOLS_PER_USEC_HALFGI(_usec) (((_usec*5)-4)/18)
 
+/* Shifts in ar5008_phy.c and ar9003_phy.c are equal for all revisions */
+#define ATH9K_PWRTBL_11NA_OFDM_SHIFT    0
+#define ATH9K_PWRTBL_11NG_OFDM_SHIFT    4
+#define ATH9K_PWRTBL_11NA_HT_SHIFT      8
+#define ATH9K_PWRTBL_11NG_HT_SHIFT      12
+
 
 static u16 bits_per_symbol[][2] = {
 	/* 20MHz 40MHz */
@@ -1169,13 +1175,14 @@ void ath_update_max_aggr_framelen(struct ath_softc *sc, int queue, int txop)
 }
 
 static u8 ath_get_rate_txpower(struct ath_softc *sc, struct ath_buf *bf,
-			       u8 rateidx, bool is_40, bool is_cck)
+			       u8 rateidx, bool is_40, bool is_cck, bool is_mcs)
 {
 	u8 max_power;
 	struct sk_buff *skb;
 	struct ath_frame_info *fi;
 	struct ieee80211_tx_info *info;
 	struct ath_hw *ah = sc->sc_ah;
+	bool is_2ghz, is_5ghz, use_stbc;
 
 	if (sc->tx99_state || !ah->tpc_enabled)
 		return MAX_RATE_POWER;
@@ -1184,6 +1191,19 @@ static u8 ath_get_rate_txpower(struct ath_softc *sc, struct ath_buf *bf,
 	fi = get_frame_info(skb);
 	info = IEEE80211_SKB_CB(skb);
 
+	is_2ghz = info->band == NL80211_BAND_2GHZ;
+	is_5ghz = info->band == NL80211_BAND_5GHZ;
+	use_stbc = is_mcs && rateidx < 8 && (info->flags &
+					     IEEE80211_TX_CTL_STBC);
+
+	if (is_mcs)
+		rateidx += is_5ghz ? ATH9K_PWRTBL_11NA_HT_SHIFT
+				   : ATH9K_PWRTBL_11NG_HT_SHIFT;
+	else if (is_2ghz && !is_cck)
+		rateidx += ATH9K_PWRTBL_11NG_OFDM_SHIFT;
+	else
+		rateidx += ATH9K_PWRTBL_11NA_OFDM_SHIFT;
+
 	if (!AR_SREV_9300_20_OR_LATER(ah)) {
 		int txpower = fi->tx_power;
 
@@ -1193,10 +1213,8 @@ static u8 ath_get_rate_txpower(struct ath_softc *sc, struct ath_buf *bf,
 			u16 eeprom_rev = ah->eep_ops->get_eeprom_rev(ah);
 
 			if (eeprom_rev >= AR5416_EEP_MINOR_VER_2) {
-				bool is_2ghz;
 				struct modal_eep_header *pmodal;
 
-				is_2ghz = info->band == NL80211_BAND_2GHZ;
 				pmodal = &eep->modalHeader[is_2ghz];
 				power_ht40delta = pmodal->ht40PowerIncForPdadc;
 			} else {
@@ -1229,7 +1247,7 @@ static u8 ath_get_rate_txpower(struct ath_softc *sc, struct ath_buf *bf,
 		if (!max_power && !AR_SREV_9280_20_OR_LATER(ah))
 			max_power = 1;
 	} else if (!bf->bf_state.bfs_paprd) {
-		if (rateidx < 8 && (info->flags & IEEE80211_TX_CTL_STBC))
+		if (use_stbc)
 			max_power = min_t(u8, ah->tx_power_stbc[rateidx],
 					  fi->tx_power);
 		else
@@ -1319,7 +1337,7 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf,
 			}
 
 			info->txpower[i] = ath_get_rate_txpower(sc, bf, rix,
-								is_40, false);
+								is_40, false, true);
 			continue;
 		}
 
@@ -1350,7 +1368,7 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf,
 
 		is_cck = IS_CCK_RATE(info->rates[i].Rate);
 		info->txpower[i] = ath_get_rate_txpower(sc, bf, rix, false,
-							is_cck);
+							is_cck, false);
 	}
 
 	/* For AR5416 - RTS cannot be followed by a frame larger than 8K */