+--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c
++++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
+@@ -868,10 +868,6 @@ static void ar9003_hw_set_rfmode(struct
+
+ if (IS_CHAN_A_FAST_CLOCK(ah, chan))
+ rfMode |= (AR_PHY_MODE_DYNAMIC | AR_PHY_MODE_DYN_CCK_DISABLE);
+- if (IS_CHAN_QUARTER_RATE(chan))
+- rfMode |= AR_PHY_MODE_QUARTER;
+- if (IS_CHAN_HALF_RATE(chan))
+- rfMode |= AR_PHY_MODE_HALF;
+
+ if (rfMode & (AR_PHY_MODE_QUARTER | AR_PHY_MODE_HALF))
+ REG_RMW_FIELD(ah, AR_PHY_FRAME_CTL,
+--- a/drivers/net/wireless/ath/ath5k/mac80211-ops.c
++++ b/drivers/net/wireless/ath/ath5k/mac80211-ops.c
+@@ -706,6 +706,7 @@ ath5k_get_survey(struct ieee80211_hw *hw
+ survey->channel = conf->chandef.chan;
+ survey->noise = ah->ah_noise_floor;
+ survey->filled = SURVEY_INFO_NOISE_DBM |
++ SURVEY_INFO_IN_USE |
+ SURVEY_INFO_CHANNEL_TIME |
+ SURVEY_INFO_CHANNEL_TIME_BUSY |
+ SURVEY_INFO_CHANNEL_TIME_RX |
+--- a/drivers/net/wireless/ath/ath9k/recv.c
++++ b/drivers/net/wireless/ath/ath9k/recv.c
+@@ -732,11 +732,18 @@ static struct ath_rxbuf *ath_get_next_rx
+ return NULL;
+
+ /*
+- * mark descriptor as zero-length and set the 'more'
+- * flag to ensure that both buffers get discarded
++ * Re-check previous descriptor, in case it has been filled
++ * in the mean time.
+ */
+- rs->rs_datalen = 0;
+- rs->rs_more = true;
++ ret = ath9k_hw_rxprocdesc(ah, ds, rs);
++ if (ret == -EINPROGRESS) {
++ /*
++ * mark descriptor as zero-length and set the 'more'
++ * flag to ensure that both buffers get discarded
++ */
++ rs->rs_datalen = 0;
++ rs->rs_more = true;
++ }
+ }
+
+ list_del(&bf->list);
+@@ -985,32 +992,32 @@ static int ath9k_rx_skb_preprocess(struc
+ struct ath_common *common = ath9k_hw_common(ah);
+ struct ieee80211_hdr *hdr;
+ bool discard_current = sc->rx.discard_next;
+- int ret = 0;
+
+ /*
+ * Discard corrupt descriptors which are marked in
+ * ath_get_next_rx_buf().
+ */
+- sc->rx.discard_next = rx_stats->rs_more;
+ if (discard_current)
+- return -EINVAL;
++ goto corrupt;
++
++ sc->rx.discard_next = false;
+
+ /*
+ * Discard zero-length packets.
+ */
+ if (!rx_stats->rs_datalen) {
+ RX_STAT_INC(rx_len_err);
+- return -EINVAL;
++ goto corrupt;
+ }
+
+- /*
+- * rs_status follows rs_datalen so if rs_datalen is too large
+- * we can take a hint that hardware corrupted it, so ignore
+- * those frames.
+- */
++ /*
++ * rs_status follows rs_datalen so if rs_datalen is too large
++ * we can take a hint that hardware corrupted it, so ignore
++ * those frames.
++ */
+ if (rx_stats->rs_datalen > (common->rx_bufsize - ah->caps.rx_status_len)) {
+ RX_STAT_INC(rx_len_err);
+- return -EINVAL;
++ goto corrupt;
+ }
+
+ /* Only use status info from the last fragment */
+@@ -1024,10 +1031,8 @@ static int ath9k_rx_skb_preprocess(struc
+ * This is different from the other corrupt descriptor
+ * condition handled above.
+ */
+- if (rx_stats->rs_status & ATH9K_RXERR_CORRUPT_DESC) {
+- ret = -EINVAL;
+- goto exit;
+- }
++ if (rx_stats->rs_status & ATH9K_RXERR_CORRUPT_DESC)
++ goto corrupt;
+
+ hdr = (struct ieee80211_hdr *) (skb->data + ah->caps.rx_status_len);
+
+@@ -1043,18 +1048,15 @@ static int ath9k_rx_skb_preprocess(struc
+ if (ath_process_fft(sc, hdr, rx_stats, rx_status->mactime))
+ RX_STAT_INC(rx_spectral);
+
+- ret = -EINVAL;
+- goto exit;
++ return -EINVAL;
+ }
+
+ /*
+ * everything but the rate is checked here, the rate check is done
+ * separately to avoid doing two lookups for a rate for each frame.
+ */
+- if (!ath9k_rx_accept(common, hdr, rx_status, rx_stats, decrypt_error)) {
+- ret = -EINVAL;
+- goto exit;
+- }
++ if (!ath9k_rx_accept(common, hdr, rx_status, rx_stats, decrypt_error))
++ return -EINVAL;
+
+ if (ath_is_mybeacon(common, hdr)) {
+ RX_STAT_INC(rx_beacons);
+@@ -1064,15 +1066,11 @@ static int ath9k_rx_skb_preprocess(struc
+ /*
+ * This shouldn't happen, but have a safety check anyway.
+ */
+- if (WARN_ON(!ah->curchan)) {
+- ret = -EINVAL;
+- goto exit;
+- }
++ if (WARN_ON(!ah->curchan))
++ return -EINVAL;
+
+- if (ath9k_process_rate(common, hw, rx_stats, rx_status)) {
+- ret =-EINVAL;
+- goto exit;
+- }
++ if (ath9k_process_rate(common, hw, rx_stats, rx_status))
++ return -EINVAL;
+
+ ath9k_process_rssi(common, hw, rx_stats, rx_status);
+
+@@ -1087,9 +1085,11 @@ static int ath9k_rx_skb_preprocess(struc
+ sc->rx.num_pkts++;
+ #endif
+
+-exit:
+- sc->rx.discard_next = false;
+- return ret;
++ return 0;
++
++corrupt:
++ sc->rx.discard_next = rx_stats->rs_more;
++ return -EINVAL;
+ }
+
+ static void ath9k_rx_skb_postprocess(struct ath_common *common,
+--- a/drivers/net/wireless/ath/ath9k/ani.c
++++ b/drivers/net/wireless/ath/ath9k/ani.c
+@@ -176,16 +176,26 @@ static void ath9k_hw_set_ofdm_nil(struct
+ if (ah->opmode == NL80211_IFTYPE_STATION &&
+ BEACON_RSSI(ah) <= ATH9K_ANI_RSSI_THR_HIGH)
+ weak_sig = true;
+-
+ /*
+- * OFDM Weak signal detection is always enabled for AP mode.
++ * Newer chipsets are better at dealing with high PHY error counts -
++ * keep weak signal detection enabled when no RSSI threshold is
++ * available to determine if it is needed (mode != STA)
+ */
+- if (ah->opmode != NL80211_IFTYPE_AP &&
+- aniState->ofdmWeakSigDetect != weak_sig) {
+- ath9k_hw_ani_control(ah,
+- ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION,
+- entry_ofdm->ofdm_weak_signal_on);
+- }
++ else if (AR_SREV_9300_20_OR_LATER(ah) &&
++ ah->opmode != NL80211_IFTYPE_STATION)
++ weak_sig = true;
++
++ /* Older chipsets are more sensitive to high PHY error counts */
++ else if (!AR_SREV_9300_20_OR_LATER(ah) &&
++ aniState->ofdmNoiseImmunityLevel >= 8)
++ weak_sig = false;
++
++ if (aniState->ofdmWeakSigDetect != weak_sig)
++ ath9k_hw_ani_control(ah, ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION,
++ weak_sig);
++
++ if (!AR_SREV_9300_20_OR_LATER(ah))
++ return;
+
+ if (aniState->ofdmNoiseImmunityLevel >= ATH9K_ANI_OFDM_DEF_LEVEL) {
+ ah->config.ofdm_trig_high = ATH9K_ANI_OFDM_TRIG_HIGH;
+@@ -308,17 +318,6 @@ void ath9k_ani_reset(struct ath_hw *ah,
+ BUG_ON(aniState == NULL);
+ ah->stats.ast_ani_reset++;
+
+- /* only allow a subset of functions in AP mode */
+- if (ah->opmode == NL80211_IFTYPE_AP) {
+- if (IS_CHAN_2GHZ(chan)) {
+- ah->ani_function = (ATH9K_ANI_SPUR_IMMUNITY_LEVEL |
+- ATH9K_ANI_FIRSTEP_LEVEL);
+- if (AR_SREV_9300_20_OR_LATER(ah))
+- ah->ani_function |= ATH9K_ANI_MRC_CCK;
+- } else
+- ah->ani_function = 0;
+- }
+-
+ ofdm_nil = max_t(int, ATH9K_ANI_OFDM_DEF_LEVEL,
+ aniState->ofdmNoiseImmunityLevel);
+ cck_nil = max_t(int, ATH9K_ANI_CCK_DEF_LEVEL,
+@@ -483,10 +482,17 @@ void ath9k_hw_ani_init(struct ath_hw *ah
+
+ ath_dbg(common, ANI, "Initialize ANI\n");
+
+- ah->config.ofdm_trig_high = ATH9K_ANI_OFDM_TRIG_HIGH;
+- ah->config.ofdm_trig_low = ATH9K_ANI_OFDM_TRIG_LOW;
+- ah->config.cck_trig_high = ATH9K_ANI_CCK_TRIG_HIGH;
+- ah->config.cck_trig_low = ATH9K_ANI_CCK_TRIG_LOW;
++ if (AR_SREV_9300_20_OR_LATER(ah)) {
++ ah->config.ofdm_trig_high = ATH9K_ANI_OFDM_TRIG_HIGH;
++ ah->config.ofdm_trig_low = ATH9K_ANI_OFDM_TRIG_LOW;
++ ah->config.cck_trig_high = ATH9K_ANI_CCK_TRIG_HIGH;
++ ah->config.cck_trig_low = ATH9K_ANI_CCK_TRIG_LOW;
++ } else {
++ ah->config.ofdm_trig_high = ATH9K_ANI_OFDM_TRIG_HIGH_OLD;
++ ah->config.ofdm_trig_low = ATH9K_ANI_OFDM_TRIG_LOW_OLD;
++ ah->config.cck_trig_high = ATH9K_ANI_CCK_TRIG_HIGH_OLD;
++ ah->config.cck_trig_low = ATH9K_ANI_CCK_TRIG_LOW_OLD;
++ }
+
+ ani->spurImmunityLevel = ATH9K_ANI_SPUR_IMMUNE_LVL;
+ ani->firstepLevel = ATH9K_ANI_FIRSTEP_LVL;
+--- a/drivers/net/wireless/ath/ath9k/ani.h
++++ b/drivers/net/wireless/ath/ath9k/ani.h
+@@ -22,12 +22,16 @@
+ /* units are errors per second */
+ #define ATH9K_ANI_OFDM_TRIG_HIGH 3500
+ #define ATH9K_ANI_OFDM_TRIG_HIGH_BELOW_INI 1000
++#define ATH9K_ANI_OFDM_TRIG_HIGH_OLD 500
+
+ #define ATH9K_ANI_OFDM_TRIG_LOW 400
+ #define ATH9K_ANI_OFDM_TRIG_LOW_ABOVE_INI 900
++#define ATH9K_ANI_OFDM_TRIG_LOW_OLD 200
+
+ #define ATH9K_ANI_CCK_TRIG_HIGH 600
++#define ATH9K_ANI_CCK_TRIG_HIGH_OLD 200
+ #define ATH9K_ANI_CCK_TRIG_LOW 300
++#define ATH9K_ANI_CCK_TRIG_LOW_OLD 100
+
+ #define ATH9K_ANI_SPUR_IMMUNE_LVL 3
+ #define ATH9K_ANI_FIRSTEP_LVL 2
+--- a/drivers/net/wireless/ath/ath9k/ar5008_phy.c
++++ b/drivers/net/wireless/ath/ath9k/ar5008_phy.c
+@@ -26,10 +26,6 @@ static const int firstep_table[] =
+ /* level: 0 1 2 3 4 5 6 7 8 */
+ { -4, -2, 0, 2, 4, 6, 8, 10, 12 }; /* lvl 0-8, default 2 */
+
+-static const int cycpwrThr1_table[] =
+-/* level: 0 1 2 3 4 5 6 7 8 */
+- { -6, -4, -2, 0, 2, 4, 6, 8 }; /* lvl 0-7, default 3 */
+-
+ /*
+ * register values to turn OFDM weak signal detection OFF
+ */
+@@ -921,7 +917,7 @@ static bool ar5008_hw_ani_control_new(st
+ struct ath_common *common = ath9k_hw_common(ah);
+ struct ath9k_channel *chan = ah->curchan;
+ struct ar5416AniState *aniState = &ah->ani;
+- s32 value, value2;
++ s32 value;
+
+ switch (cmd & ah->ani_function) {
+ case ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION:{
+@@ -1008,42 +1004,11 @@ static bool ar5008_hw_ani_control_new(st
+ case ATH9K_ANI_FIRSTEP_LEVEL:{
+ u32 level = param;
+
+- if (level >= ARRAY_SIZE(firstep_table)) {
+- ath_dbg(common, ANI,
+- "ATH9K_ANI_FIRSTEP_LEVEL: level out of range (%u > %zu)\n",
+- level, ARRAY_SIZE(firstep_table));
+- return false;
+- }
+-
+- /*
+- * make register setting relative to default
+- * from INI file & cap value
+- */
+- value = firstep_table[level] -
+- firstep_table[ATH9K_ANI_FIRSTEP_LVL] +
+- aniState->iniDef.firstep;
+- if (value < ATH9K_SIG_FIRSTEP_SETTING_MIN)
+- value = ATH9K_SIG_FIRSTEP_SETTING_MIN;
+- if (value > ATH9K_SIG_FIRSTEP_SETTING_MAX)
+- value = ATH9K_SIG_FIRSTEP_SETTING_MAX;
++ value = level * 2;
+ REG_RMW_FIELD(ah, AR_PHY_FIND_SIG,
+- AR_PHY_FIND_SIG_FIRSTEP,
+- value);
+- /*
+- * we need to set first step low register too
+- * make register setting relative to default
+- * from INI file & cap value
+- */
+- value2 = firstep_table[level] -
+- firstep_table[ATH9K_ANI_FIRSTEP_LVL] +
+- aniState->iniDef.firstepLow;
+- if (value2 < ATH9K_SIG_FIRSTEP_SETTING_MIN)
+- value2 = ATH9K_SIG_FIRSTEP_SETTING_MIN;
+- if (value2 > ATH9K_SIG_FIRSTEP_SETTING_MAX)
+- value2 = ATH9K_SIG_FIRSTEP_SETTING_MAX;
+-
++ AR_PHY_FIND_SIG_FIRSTEP, value);
+ REG_RMW_FIELD(ah, AR_PHY_FIND_SIG_LOW,
+- AR_PHY_FIND_SIG_FIRSTEP_LOW, value2);
++ AR_PHY_FIND_SIG_FIRSTEP_LOW, value);
+
+ if (level != aniState->firstepLevel) {
+ ath_dbg(common, ANI,
+@@ -1060,7 +1025,7 @@ static bool ar5008_hw_ani_control_new(st
+ aniState->firstepLevel,
+ level,
+ ATH9K_ANI_FIRSTEP_LVL,
+- value2,
++ value,
+ aniState->iniDef.firstepLow);
+ if (level > aniState->firstepLevel)
+ ah->stats.ast_ani_stepup++;
+@@ -1073,41 +1038,13 @@ static bool ar5008_hw_ani_control_new(st
+ case ATH9K_ANI_SPUR_IMMUNITY_LEVEL:{
+ u32 level = param;
+
+- if (level >= ARRAY_SIZE(cycpwrThr1_table)) {
+- ath_dbg(common, ANI,
+- "ATH9K_ANI_SPUR_IMMUNITY_LEVEL: level out of range (%u > %zu)\n",
+- level, ARRAY_SIZE(cycpwrThr1_table));
+- return false;
+- }
+- /*
+- * make register setting relative to default
+- * from INI file & cap value
+- */
+- value = cycpwrThr1_table[level] -
+- cycpwrThr1_table[ATH9K_ANI_SPUR_IMMUNE_LVL] +
+- aniState->iniDef.cycpwrThr1;
+- if (value < ATH9K_SIG_SPUR_IMM_SETTING_MIN)
+- value = ATH9K_SIG_SPUR_IMM_SETTING_MIN;
+- if (value > ATH9K_SIG_SPUR_IMM_SETTING_MAX)
+- value = ATH9K_SIG_SPUR_IMM_SETTING_MAX;
++ value = (level + 1) * 2;
+ REG_RMW_FIELD(ah, AR_PHY_TIMING5,
+- AR_PHY_TIMING5_CYCPWR_THR1,
+- value);
++ AR_PHY_TIMING5_CYCPWR_THR1, value);
+
+- /*
+- * set AR_PHY_EXT_CCA for extension channel
+- * make register setting relative to default
+- * from INI file & cap value
+- */
+- value2 = cycpwrThr1_table[level] -
+- cycpwrThr1_table[ATH9K_ANI_SPUR_IMMUNE_LVL] +
+- aniState->iniDef.cycpwrThr1Ext;
+- if (value2 < ATH9K_SIG_SPUR_IMM_SETTING_MIN)
+- value2 = ATH9K_SIG_SPUR_IMM_SETTING_MIN;
+- if (value2 > ATH9K_SIG_SPUR_IMM_SETTING_MAX)
+- value2 = ATH9K_SIG_SPUR_IMM_SETTING_MAX;
+- REG_RMW_FIELD(ah, AR_PHY_EXT_CCA,
+- AR_PHY_EXT_TIMING5_CYCPWR_THR1, value2);
++ if (IS_CHAN_HT40(ah->curchan))
++ REG_RMW_FIELD(ah, AR_PHY_EXT_CCA,
++ AR_PHY_EXT_TIMING5_CYCPWR_THR1, value);
+
+ if (level != aniState->spurImmunityLevel) {
+ ath_dbg(common, ANI,
+@@ -1124,7 +1061,7 @@ static bool ar5008_hw_ani_control_new(st
+ aniState->spurImmunityLevel,
+ level,
+ ATH9K_ANI_SPUR_IMMUNE_LVL,
+- value2,
++ value,
+ aniState->iniDef.cycpwrThr1Ext);
+ if (level > aniState->spurImmunityLevel)
+ ah->stats.ast_ani_spurup++;