int nstations; /* number of station vifs */
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
-@@ -1366,7 +1366,10 @@ static bool ath9k_hw_set_reset(struct at
+@@ -1171,6 +1171,7 @@ u32 ath9k_regd_get_ctl(struct ath_regula
+ static inline void ath9k_hw_set_dma(struct ath_hw *ah)
+ {
+ struct ath_common *common = ath9k_hw_common(ah);
++ int txbuf_size;
+
+ ENABLE_REGWRITE_BUFFER(ah);
+
+@@ -1224,13 +1225,17 @@ static inline void ath9k_hw_set_dma(stru
+ * So set the usable tx buf size also to half to
+ * avoid data/delimiter underruns
+ */
+- REG_WRITE(ah, AR_PCU_TXBUF_CTRL,
+- AR_9285_PCU_TXBUF_CTRL_USABLE_SIZE);
+- } else if (!AR_SREV_9271(ah)) {
+- REG_WRITE(ah, AR_PCU_TXBUF_CTRL,
+- AR_PCU_TXBUF_CTRL_USABLE_SIZE);
++ txbuf_size = AR_9285_PCU_TXBUF_CTRL_USABLE_SIZE;
++ } else if (AR_SREV_9340_13_OR_LATER(ah)) {
++ /* Uses fewer entries for AR934x v1.3+ to prevent rx overruns */
++ txbuf_size = AR_9340_PCU_TXBUF_CTRL_USABLE_SIZE;
++ } else {
++ txbuf_size = AR_PCU_TXBUF_CTRL_USABLE_SIZE;
+ }
+
++ if (!AR_SREV_9271(ah))
++ REG_WRITE(ah, AR_PCU_TXBUF_CTRL, txbuf_size);
++
+ REGWRITE_BUFFER_FLUSH(ah);
+
+ if (AR_SREV_9300_20_OR_LATER(ah))
+@@ -1305,9 +1310,13 @@ static bool ath9k_hw_set_reset(struct at
+ AR_RTC_RC_COLD_RESET | AR_RTC_RC_WARM_RESET;
+ } else {
+ tmpReg = REG_READ(ah, AR_INTR_SYNC_CAUSE);
+- if (tmpReg &
+- (AR_INTR_SYNC_LOCAL_TIMEOUT |
+- AR_INTR_SYNC_RADM_CPL_TIMEOUT)) {
++ if (AR_SREV_9340(ah))
++ tmpReg &= AR9340_INTR_SYNC_LOCAL_TIMEOUT;
++ else
++ tmpReg &= AR_INTR_SYNC_LOCAL_TIMEOUT |
++ AR_INTR_SYNC_RADM_CPL_TIMEOUT;
++
++ if (tmpReg) {
+ u32 val;
+ REG_WRITE(ah, AR_INTR_SYNC_ENABLE, 0);
+
+@@ -1366,7 +1375,10 @@ static bool ath9k_hw_set_reset(struct at
REGWRITE_BUFFER_FLUSH(ah);
REG_WRITE(ah, AR_RTC_RC, 0);
if (!ath9k_hw_wait(ah, AR_RTC_RC, AR_RTC_RC_M, 0, AH_WAIT_TIMEOUT)) {
-@@ -1377,8 +1380,12 @@ static bool ath9k_hw_set_reset(struct at
+@@ -1377,8 +1389,12 @@ static bool ath9k_hw_set_reset(struct at
if (!AR_SREV_9100(ah))
REG_WRITE(ah, AR_RC, 0);
return true;
}
-@@ -1464,7 +1471,8 @@ static bool ath9k_hw_chip_reset(struct a
+@@ -1464,7 +1480,8 @@ static bool ath9k_hw_chip_reset(struct a
reset_type = ATH9K_RESET_POWER_ON;
else
reset_type = ATH9K_RESET_COLD;
(REG_READ(ah, AR_CR) & AR_CR_RXE))
reset_type = ATH9K_RESET_COLD;
-@@ -1698,12 +1706,11 @@ static void ath9k_hw_reset_opmode(struct
+@@ -1698,12 +1715,11 @@ static void ath9k_hw_reset_opmode(struct
ENABLE_REGWRITE_BUFFER(ah);
case IEEE80211_AMPDU_TX_OPERATIONAL:
--- a/drivers/net/wireless/ath/ath9k/reg.h
+++ b/drivers/net/wireless/ath/ath9k/reg.h
-@@ -1493,9 +1493,6 @@ enum {
+@@ -798,6 +798,10 @@
+ #define AR_SREV_REVISION_9485_10 0
+ #define AR_SREV_REVISION_9485_11 1
+ #define AR_SREV_VERSION_9340 0x300
++#define AR_SREV_REVISION_9340_10 0
++#define AR_SREV_REVISION_9340_11 1
++#define AR_SREV_REVISION_9340_12 2
++#define AR_SREV_REVISION_9340_13 3
+ #define AR_SREV_VERSION_9580 0x1C0
+ #define AR_SREV_REVISION_9580_10 4 /* AR9580 1.0 */
+ #define AR_SREV_VERSION_9462 0x280
+@@ -897,6 +901,10 @@
+ #define AR_SREV_9340(_ah) \
+ (((_ah)->hw_version.macVersion == AR_SREV_VERSION_9340))
+
++#define AR_SREV_9340_13_OR_LATER(_ah) \
++ (AR_SREV_9340((_ah)) && \
++ ((_ah)->hw_version.macRev >= AR_SREV_REVISION_9340_13))
++
+ #define AR_SREV_9285E_20(_ah) \
+ (AR_SREV_9285_12_OR_LATER(_ah) && \
+ ((REG_READ(_ah, AR_AN_SYNTH9) & 0x7) == 0x1))
+@@ -1007,6 +1015,8 @@ enum {
+ AR_INTR_SYNC_LOCAL_TIMEOUT |
+ AR_INTR_SYNC_MAC_SLEEP_ACCESS),
+
++ AR9340_INTR_SYNC_LOCAL_TIMEOUT = 0x00000010,
++
+ AR_INTR_SYNC_SPURIOUS = 0xFFFFFFFF,
+
+ };
+@@ -1493,9 +1503,6 @@ enum {
#define AR9271_RADIO_RF_RST 0x20
#define AR9271_GATE_MAC_CTL 0x4000
#define AR_STA_ID1_STA_AP 0x00010000
#define AR_STA_ID1_ADHOC 0x00020000
#define AR_STA_ID1_PWR_SAV 0x00040000
+@@ -1884,6 +1891,7 @@ enum {
+ #define AR_PCU_TXBUF_CTRL_SIZE_MASK 0x7FF
+ #define AR_PCU_TXBUF_CTRL_USABLE_SIZE 0x700
+ #define AR_9285_PCU_TXBUF_CTRL_USABLE_SIZE 0x380
++#define AR_9340_PCU_TXBUF_CTRL_USABLE_SIZE 0x500
+
+ #define AR_PCU_MISC_MODE2 0x8344
+ #define AR_PCU_MISC_MODE2_MGMT_CRYPTO_ENABLE 0x00000002
--- a/drivers/net/wireless/ath/hw.c
+++ b/drivers/net/wireless/ath/hw.c
@@ -118,6 +118,12 @@
}
+--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c
++++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
+@@ -334,7 +334,8 @@ static void ar9003_hw_spur_ofdm(struct a
+ REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
+ AR_PHY_SPUR_REG_EN_VIT_SPUR_RSSI, 1);
+
+- if (REG_READ_FIELD(ah, AR_PHY_MODE,
++ if (!AR_SREV_9340(ah) &&
++ REG_READ_FIELD(ah, AR_PHY_MODE,
+ AR_PHY_MODE_DYNAMIC) == 0x1)
+ REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
+ AR_PHY_SPUR_REG_ENABLE_NF_RSSI_SPUR_MIT, 1);
+--- a/drivers/net/wireless/ath/ath9k/mac.c
++++ b/drivers/net/wireless/ath/ath9k/mac.c
+@@ -410,7 +410,7 @@ bool ath9k_hw_resettxqueue(struct ath_hw
+
+ REG_WRITE(ah, AR_QMISC(q), AR_Q_MISC_DCU_EARLY_TERM_REQ);
+
+- if (AR_SREV_9340(ah))
++ if (AR_SREV_9340(ah) && !AR_SREV_9340_13_OR_LATER(ah))
+ REG_WRITE(ah, AR_DMISC(q),
+ AR_D_MISC_CW_BKOFF_EN | AR_D_MISC_FRAG_WAIT_EN | 0x1);
+ else