---- a/drivers/net/wireless/ath/ath.h
-+++ b/drivers/net/wireless/ath/ath.h
-@@ -102,14 +102,12 @@ enum ath_cipher {
- * @read: Register read
- * @write: Register write
- * @enable_write_buffer: Enable multiple register writes
-- * @disable_write_buffer: Disable multiple register writes
-- * @write_flush: Flush buffered register writes
-+ * @write_flush: flush buffered register writes and disable buffering
- */
- struct ath_ops {
- unsigned int (*read)(void *, u32 reg_offset);
- void (*write)(void *, u32 val, u32 reg_offset);
- void (*enable_write_buffer)(void *);
-- void (*disable_write_buffer)(void *);
- void (*write_flush) (void *);
- };
-
---- a/drivers/net/wireless/ath/ath9k/htc_drv_init.c
-+++ b/drivers/net/wireless/ath/ath9k/htc_drv_init.c
-@@ -380,15 +380,6 @@ static void ath9k_enable_regwrite_buffer
- atomic_inc(&priv->wmi->mwrite_cnt);
- }
-
--static void ath9k_disable_regwrite_buffer(void *hw_priv)
--{
-- struct ath_hw *ah = (struct ath_hw *) hw_priv;
-- struct ath_common *common = ath9k_hw_common(ah);
-- struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
--
-- atomic_dec(&priv->wmi->mwrite_cnt);
--}
--
- static void ath9k_regwrite_flush(void *hw_priv)
- {
- struct ath_hw *ah = (struct ath_hw *) hw_priv;
-@@ -397,6 +388,9 @@ static void ath9k_regwrite_flush(void *h
- u32 rsp_status;
- int r;
-
-+ if (!atomic_dec_and_test(&priv->wmi->mwrite_cnt))
-+ return;
-+
- mutex_lock(&priv->wmi->multi_write_mutex);
-
- if (priv->wmi->multi_write_idx) {
-@@ -420,7 +414,6 @@ static const struct ath_ops ath9k_common
- .read = ath9k_regread,
- .write = ath9k_regwrite,
- .enable_write_buffer = ath9k_enable_regwrite_buffer,
-- .disable_write_buffer = ath9k_disable_regwrite_buffer,
- .write_flush = ath9k_regwrite_flush,
- };
-
---- a/drivers/net/wireless/ath/ath9k/hw.h
-+++ b/drivers/net/wireless/ath/ath9k/hw.h
-@@ -70,19 +70,13 @@
-
- #define ENABLE_REGWRITE_BUFFER(_ah) \
- do { \
-- if (AR_SREV_9271(_ah)) \
-+ if (ath9k_hw_common(_ah)->ops->enable_write_buffer) \
- ath9k_hw_common(_ah)->ops->enable_write_buffer((_ah)); \
- } while (0)
-
--#define DISABLE_REGWRITE_BUFFER(_ah) \
-- do { \
-- if (AR_SREV_9271(_ah)) \
-- ath9k_hw_common(_ah)->ops->disable_write_buffer((_ah)); \
-- } while (0)
--
- #define REGWRITE_BUFFER_FLUSH(_ah) \
- do { \
-- if (AR_SREV_9271(_ah)) \
-+ if (ath9k_hw_common(_ah)->ops->write_flush) \
- ath9k_hw_common(_ah)->ops->write_flush((_ah)); \
- } while (0)
-
---- a/drivers/net/wireless/ath/ath9k/ani.c
-+++ b/drivers/net/wireless/ath/ath9k/ani.c
-@@ -180,7 +180,6 @@ static void ath9k_ani_restart_old(struct
- REG_WRITE(ah, AR_PHY_ERR_MASK_2, AR_PHY_ERR_CCK_TIMING);
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
-
- ath9k_hw_update_mibstats(ah, &ah->ah_mibStats);
-
-@@ -215,7 +214,6 @@ static void ath9k_ani_restart_new(struct
- REG_WRITE(ah, AR_PHY_ERR_MASK_2, AR_PHY_ERR_CCK_TIMING);
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
-
- ath9k_hw_update_mibstats(ah, &ah->ah_mibStats);
-
-@@ -643,7 +641,6 @@ static void ath9k_ani_reset_old(struct a
- REG_WRITE(ah, AR_PHY_ERR_MASK_2, AR_PHY_ERR_CCK_TIMING);
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
- }
-
- /*
-@@ -737,7 +734,6 @@ static void ath9k_ani_reset_new(struct a
- REG_WRITE(ah, AR_PHY_ERR_MASK_2, AR_PHY_ERR_CCK_TIMING);
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
- }
-
- static void ath9k_hw_ani_monitor_old(struct ath_hw *ah,
-@@ -991,7 +987,6 @@ void ath9k_enable_mib_counters(struct at
- REG_WRITE(ah, AR_PHY_ERR_MASK_2, AR_PHY_ERR_CCK_TIMING);
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
- }
-
- /* Freeze the MIB counters, get the stats and then clear them */
-@@ -1261,7 +1256,6 @@ void ath9k_hw_ani_init(struct ath_hw *ah
- REG_WRITE(ah, AR_PHY_ERR_2, ah->ani[0].cckPhyErrBase);
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
-
- ath9k_enable_mib_counters(ah);
-
---- a/drivers/net/wireless/ath/ath9k/ar5008_phy.c
-+++ b/drivers/net/wireless/ath/ath9k/ar5008_phy.c
-@@ -615,14 +615,11 @@ static void ar5008_hw_init_chain_masks(s
- rx_chainmask = ah->rxchainmask;
- tx_chainmask = ah->txchainmask;
-
-- ENABLE_REGWRITE_BUFFER(ah);
-
- switch (rx_chainmask) {
- case 0x5:
-- DISABLE_REGWRITE_BUFFER(ah);
- REG_SET_BIT(ah, AR_PHY_ANALOG_SWAP,
- AR_PHY_SWAP_ALT_CHAIN);
-- ENABLE_REGWRITE_BUFFER(ah);
- case 0x3:
- if (ah->hw_version.macVersion == AR_SREV_REVISION_5416_10) {
- REG_WRITE(ah, AR_PHY_RX_CHAINMASK, 0x7);
-@@ -632,17 +629,18 @@ static void ar5008_hw_init_chain_masks(s
- case 0x1:
- case 0x2:
- case 0x7:
-+ ENABLE_REGWRITE_BUFFER(ah);
- REG_WRITE(ah, AR_PHY_RX_CHAINMASK, rx_chainmask);
- REG_WRITE(ah, AR_PHY_CAL_CHAINMASK, rx_chainmask);
- break;
- default:
-+ ENABLE_REGWRITE_BUFFER(ah);
- break;
- }
-
- REG_WRITE(ah, AR_SELFGEN_MASK, tx_chainmask);
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
-
- if (tx_chainmask == 0x5) {
- REG_SET_BIT(ah, AR_PHY_ANALOG_SWAP,
-@@ -728,7 +726,6 @@ static void ar5008_hw_set_channel_regs(s
- REG_WRITE(ah, AR_CST, 0xF << AR_CST_TIMEOUT_LIMIT_S);
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
- }
-
-
-@@ -820,7 +817,6 @@ static int ar5008_hw_process_ini(struct
- }
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
-
- if (AR_SREV_9280(ah) || AR_SREV_9287_11_OR_LATER(ah))
- REG_WRITE_ARRAY(&ah->iniModesRxGain, modesIndex, regWrites);
-@@ -851,7 +847,6 @@ static int ar5008_hw_process_ini(struct
- }
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
-
- if (AR_SREV_9271(ah)) {
- if (ah->eep_ops->get_eeprom(ah, EEP_TXGAIN_TYPE) == 1)
---- a/drivers/net/wireless/ath/ath9k/ar9002_calib.c
-+++ b/drivers/net/wireless/ath/ath9k/ar9002_calib.c
-@@ -522,7 +522,6 @@ static void ar9271_hw_pa_cal(struct ath_
- REG_WRITE(ah, regList[i][0], regList[i][1]);
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
- }
-
- static inline void ar9285_hw_pa_cal(struct ath_hw *ah, bool is_reset)
---- a/drivers/net/wireless/ath/ath9k/ar9002_hw.c
-+++ b/drivers/net/wireless/ath/ath9k/ar9002_hw.c
-@@ -371,7 +371,6 @@ static void ar9002_hw_configpcipowersave
- REG_WRITE(ah, AR_PCIE_SERDES2, 0x00000000);
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
- }
-
- udelay(1000);
-@@ -468,7 +467,6 @@ static int ar9002_hw_get_radiorev(struct
- REG_WRITE(ah, AR_PHY(0x20), 0x00010000);
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
-
- val = (REG_READ(ah, AR_PHY(256)) >> 24) & 0xff;
- val = ((val & 0xf0) >> 4) | ((val & 0x0f) << 4);
-@@ -627,6 +625,4 @@ void ar9002_hw_load_ani_reg(struct ath_h
- }
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
--
- }
---- a/drivers/net/wireless/ath/ath9k/ar9002_phy.c
-+++ b/drivers/net/wireless/ath/ath9k/ar9002_phy.c
-@@ -415,7 +415,6 @@ static void ar9002_hw_spur_mitigate(stru
- REG_WRITE(ah, AR_PHY_MASK2_P_61_45, tmp_mask);
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
- }
-
- static void ar9002_olc_init(struct ath_hw *ah)
---- a/drivers/net/wireless/ath/ath9k/calib.c
-+++ b/drivers/net/wireless/ath/ath9k/calib.c
-@@ -300,7 +300,6 @@ void ath9k_hw_loadnf(struct ath_hw *ah,
- }
- }
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
- }
-
-
---- a/drivers/net/wireless/ath/ath9k/eeprom_4k.c
-+++ b/drivers/net/wireless/ath/ath9k/eeprom_4k.c
-@@ -500,7 +500,6 @@ static void ath9k_hw_set_4k_power_cal_ta
- }
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
- }
- }
-
-@@ -832,7 +831,6 @@ static void ath9k_hw_4k_set_txpower(stru
- }
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
- }
-
- static void ath9k_hw_4k_set_addac(struct ath_hw *ah,
---- a/drivers/net/wireless/ath/ath9k/hw.c
-+++ b/drivers/net/wireless/ath/ath9k/hw.c
-@@ -302,7 +302,6 @@ static void ath9k_hw_disablepcie(struct
- REG_WRITE(ah, AR_PCIE_SERDES2, 0x00000000);
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
- }
-
- /* This should work for all families including legacy */
-@@ -688,7 +687,6 @@ static void ath9k_hw_init_qos(struct ath
- REG_WRITE(ah, AR_TXOP_12_15, 0xFFFFFFFF);
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
- }
-
- static void ath9k_hw_init_pll(struct ath_hw *ah,
-@@ -753,7 +751,6 @@ static void ath9k_hw_init_interrupt_mask
- }
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
-
- if (AR_SREV_9300_20_OR_LATER(ah)) {
- REG_WRITE(ah, AR_INTR_PRIO_ASYNC_ENABLE, 0);
-@@ -897,7 +894,6 @@ static inline void ath9k_hw_set_dma(stru
- REG_WRITE(ah, AR_TXCFG, regval | AR_TXCFG_DMASZ_128B);
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
-
- /*
- * Restore TX Trigger Level to its pre-reset value.
-@@ -945,7 +941,6 @@ static inline void ath9k_hw_set_dma(stru
- }
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
-
- if (AR_SREV_9300_20_OR_LATER(ah))
- ath9k_hw_reset_txstatus_ring(ah);
-@@ -1043,7 +1038,6 @@ static bool ath9k_hw_set_reset(struct at
- REG_WRITE(ah, AR_RTC_RC, rst_flags);
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
-
- udelay(50);
-
-@@ -1082,7 +1076,6 @@ static bool ath9k_hw_set_reset_power_on(
- udelay(2);
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
-
- if (!AR_SREV_9300_20_OR_LATER(ah))
- udelay(2);
-@@ -1386,7 +1379,6 @@ int ath9k_hw_reset(struct ath_hw *ah, st
- REG_WRITE(ah, AR_RSSI_THR, INIT_RSSI_THR);
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
-
- r = ath9k_hw_rf_set_freq(ah, chan);
- if (r)
-@@ -1398,7 +1390,6 @@ int ath9k_hw_reset(struct ath_hw *ah, st
- REG_WRITE(ah, AR_DQCUMASK(i), 1 << i);
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
-
- ah->intr_txqs = 0;
- for (i = 0; i < ah->caps.total_queues; i++)
-@@ -1446,7 +1437,6 @@ int ath9k_hw_reset(struct ath_hw *ah, st
- REG_WRITE(ah, AR_CFG_LED, saveLedState | AR_CFG_SCLK_32KHZ);
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
-
- /*
- * For big endian systems turn on swapping for descriptors
-@@ -1696,7 +1686,6 @@ void ath9k_hw_beaconinit(struct ath_hw *
- REG_WRITE(ah, AR_NDP_PERIOD, TU_TO_USEC(beacon_period));
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
-
- beacon_period &= ~ATH9K_BEACON_ENA;
- if (beacon_period & ATH9K_BEACON_RESET_TSF) {
-@@ -1724,7 +1713,6 @@ void ath9k_hw_set_sta_beacon_timers(stru
- TU_TO_USEC(bs->bs_intval & ATH9K_BEACON_PERIOD));
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
-
- REG_RMW_FIELD(ah, AR_RSSI_THR,
- AR_RSSI_THR_BM_THR, bs->bs_bmissthreshold);
-@@ -1770,7 +1758,6 @@ void ath9k_hw_set_sta_beacon_timers(stru
- REG_WRITE(ah, AR_DTIM_PERIOD, TU_TO_USEC(dtimperiod));
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
-
- REG_SET_BIT(ah, AR_TIMER_MODE,
- AR_TBTT_TIMER_EN | AR_TIM_TIMER_EN |
-@@ -2188,7 +2175,6 @@ void ath9k_hw_setrxfilter(struct ath_hw
- REG_READ(ah, AR_RXCFG) & ~AR_RXCFG_ZLFDMA);
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
- }
- EXPORT_SYMBOL(ath9k_hw_setrxfilter);
-
---- a/drivers/net/wireless/ath/ath9k/mac.c
-+++ b/drivers/net/wireless/ath/ath9k/mac.c
-@@ -40,7 +40,6 @@ static void ath9k_hw_set_txq_interrupts(
- REG_WRITE(ah, AR_IMR_S2, ah->imrs2_reg);
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
- }
-
- u32 ath9k_hw_gettxbuf(struct ath_hw *ah, u32 q)
-@@ -530,7 +529,6 @@ bool ath9k_hw_resettxqueue(struct ath_hw
- }
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
-
- if (qi->tqi_qflags & TXQ_FLAG_FRAG_BURST_BACKOFF_ENABLE) {
- REG_WRITE(ah, AR_DMISC(q),
-@@ -553,7 +551,6 @@ bool ath9k_hw_resettxqueue(struct ath_hw
- | AR_D_MISC_POST_FR_BKOFF_DIS);
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
-
- /*
- * cwmin and cwmax should be 0 for beacon queue
-@@ -585,7 +582,6 @@ bool ath9k_hw_resettxqueue(struct ath_hw
- AR_D_MISC_ARB_LOCKOUT_CNTRL_S));
-
- REGWRITE_BUFFER_FLUSH(ah);
-- DISABLE_REGWRITE_BUFFER(ah);
-
- break;
- case ATH9K_TX_QUEUE_PSPOLL:
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