ath9k_hw: Fix MCI usage

MCI has to be handled only when BTCOEX is actually enabled.
Check for this condition before calling MCI related functions
from various reset/calibration call-sites.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

4 files changed, 18 insertions, 19 deletions

diff --git a/drivers/net/wireless/ath/ath9k/ar9003_calib.c b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
index 9fdd70fcaf5b..f83a4a2e1da2 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_calib.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
@@ -901,7 +901,6 @@ static bool ar9003_hw_init_cal(struct ath_hw *ah,
         bool is_reusable = true, status = true;
         bool run_rtt_cal = false, run_agc_cal;
         bool rtt = !!(ah->caps.hw_caps & ATH9K_HW_CAP_RTT);
-        bool mci = !!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI);
         u32 agc_ctrl = 0, agc_supp_cals = AR_PHY_AGC_CONTROL_OFFSET_CAL |
                                           AR_PHY_AGC_CONTROL_FLTR_CAL   |
                                           AR_PHY_AGC_CONTROL_PKDET_CAL;
@@ -970,7 +969,7 @@ static bool ar9003_hw_init_cal(struct ath_hw *ah,
         } else if (caldata && !caldata->done_txiqcal_once)
                 run_agc_cal = true;
 
-        if (mci && IS_CHAN_2GHZ(chan) && run_agc_cal)
+        if (ath9k_hw_mci_is_enabled(ah) && IS_CHAN_2GHZ(chan) && run_agc_cal)
                 ar9003_mci_init_cal_req(ah, &is_reusable);
 
         if (!(IS_CHAN_HALF_RATE(chan) || IS_CHAN_QUARTER_RATE(chan))) {
@@ -993,7 +992,7 @@ skip_tx_iqcal:
                                        0, AH_WAIT_TIMEOUT);
         }
 
-        if (mci && IS_CHAN_2GHZ(chan) && run_agc_cal)
+        if (ath9k_hw_mci_is_enabled(ah) && IS_CHAN_2GHZ(chan) && run_agc_cal)
                 ar9003_mci_init_cal_done(ah);
 
         if (rtt && !run_rtt_cal) {
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mci.h b/drivers/net/wireless/ath/ath9k/ar9003_mci.h
index 4842f6c06b8c..652ab8c39e2b 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_mci.h
+++ b/drivers/net/wireless/ath/ath9k/ar9003_mci.h
@@ -273,10 +273,6 @@ void ar9003_mci_get_interrupt(struct ath_hw *ah, u32 *raw_intr,
 
 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
 
-static inline bool ar9003_mci_is_ready(struct ath_hw *ah)
-{
-        return ah->btcoex_hw.mci.ready;
-}
 void ar9003_mci_stop_bt(struct ath_hw *ah, bool save_fullsleep);
 void ar9003_mci_init_cal_req(struct ath_hw *ah, bool *is_reusable);
 void ar9003_mci_init_cal_done(struct ath_hw *ah);
@@ -292,10 +288,6 @@ void ar9003_mci_get_isr(struct ath_hw *ah, enum ath9k_int *masked);
 
 #else
 
-static inline bool ar9003_mci_is_ready(struct ath_hw *ah)
-{
-        return false;
-}
 static inline void ar9003_mci_stop_bt(struct ath_hw *ah, bool save_fullsleep)
 {
 }
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 42cf3c8db95b..a7231cadec40 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1707,7 +1707,7 @@ static int ath9k_hw_do_fastcc(struct ath_hw *ah, struct ath9k_channel *chan)
         ath9k_hw_loadnf(ah, ah->curchan);
         ath9k_hw_start_nfcal(ah, true);
 
-        if ((ah->caps.hw_caps & ATH9K_HW_CAP_MCI) && ar9003_mci_is_ready(ah))
+        if (ath9k_hw_mci_is_enabled(ah))
                 ar9003_mci_2g5g_switch(ah, true);
 
         if (AR_SREV_9271(ah))
@@ -1728,10 +1728,9 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
         u64 tsf = 0;
         int i, r;
         bool start_mci_reset = false;
-        bool mci = !!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI);
         bool save_fullsleep = ah->chip_fullsleep;
 
-        if (mci) {
+        if (ath9k_hw_mci_is_enabled(ah)) {
                 start_mci_reset = ar9003_mci_start_reset(ah, chan);
                 if (start_mci_reset)
                         return 0;
@@ -1760,7 +1759,7 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
                         return r;
         }
 
-        if (mci)
+        if (ath9k_hw_mci_is_enabled(ah))
                 ar9003_mci_stop_bt(ah, save_fullsleep);
 
         saveDefAntenna = REG_READ(ah, AR_DEF_ANTENNA);
@@ -1818,7 +1817,7 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
         if (r)
                 return r;
 
-        if (mci)
+        if (ath9k_hw_mci_is_enabled(ah))
                 ar9003_mci_reset(ah, false, IS_CHAN_2GHZ(chan), save_fullsleep);
 
         /*
@@ -1937,7 +1936,7 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
         ath9k_hw_loadnf(ah, chan);
         ath9k_hw_start_nfcal(ah, true);
 
-        if (mci && ar9003_mci_end_reset(ah, chan, caldata))
+        if (ath9k_hw_mci_is_enabled(ah) && ar9003_mci_end_reset(ah, chan, caldata))
                 return -EIO;
 
         ENABLE_REGWRITE_BUFFER(ah);
@@ -1982,7 +1981,7 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
         if (ath9k_hw_btcoex_is_enabled(ah))
                 ath9k_hw_btcoex_enable(ah);
 
-        if (mci)
+        if (ath9k_hw_mci_is_enabled(ah))
                 ar9003_mci_check_bt(ah);
 
         if (AR_SREV_9300_20_OR_LATER(ah)) {
@@ -2166,7 +2165,7 @@ bool ath9k_hw_setpower(struct ath_hw *ah, enum ath9k_power_mode mode)
                 status = ath9k_hw_set_power_awake(ah, setChip);
                 break;
         case ATH9K_PM_FULL_SLEEP:
-                if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI)
+                if (ath9k_hw_mci_is_enabled(ah))
                         ar9003_mci_set_full_sleep(ah);
 
                 ath9k_set_power_sleep(ah, setChip);
diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
index b620c557c2a6..3740aab864f4 100644
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -1037,6 +1037,11 @@ static inline bool ath9k_hw_btcoex_is_enabled(struct ath_hw *ah)
 {
         return ah->btcoex_hw.enabled;
 }
+static inline bool ath9k_hw_mci_is_enabled(struct ath_hw *ah)
+{
+        return ah->btcoex_hw.enabled && (ah->caps.hw_caps & ATH9K_HW_CAP_MCI);
+
+}
 void ath9k_hw_btcoex_enable(struct ath_hw *ah);
 static inline enum ath_btcoex_scheme
 ath9k_hw_get_btcoex_scheme(struct ath_hw *ah)
@@ -1048,6 +1053,10 @@ static inline bool ath9k_hw_btcoex_is_enabled(struct ath_hw *ah)
 {
         return false;
 }
+static inline bool ath9k_hw_mci_is_enabled(struct ath_hw *ah)
+{
+        return false;
+}
 static inline void ath9k_hw_btcoex_enable(struct ath_hw *ah)
 {
 }