ath9k: Remove incorrect diversity initialization

Fast antenna diversity is required only for single chain
chips and the diversity initialization is done in the
per-family board setup routines. Enabling of diversity
should be done based on the calibrated EEPROM/OTP data,
doing it for all chips is incorrect.

Remove the code that sets the fast_div bit for all cards, since
the documentation for the AR_PHY_CCK_DETECT register says:

reg 642: sig_detect_cck
enable_ant_fast_div : Only used for single chain chips.

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

2 files changed, 0 insertions, 6 deletions

diff --git a/drivers/net/wireless/ath/ath9k/ar5008_phy.c b/drivers/net/wireless/ath/ath9k/ar5008_phy.c
index 9e4e2a693774..cb6435e7c6f5 100644
--- a/drivers/net/wireless/ath/ath9k/ar5008_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar5008_phy.c
@@ -631,9 +631,6 @@ static void ar5008_hw_override_ini(struct ath_hw *ah,
                 REG_WRITE(ah, AR_PCU_MISC_MODE2, val);
         }
 
-        REG_SET_BIT(ah, AR_PHY_CCK_DETECT,
-                    AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV);
-
         if (AR_SREV_9280_20_OR_LATER(ah))
                 return;
         /*
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_phy.c b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
index ec37213fb765..0131ba2f5d51 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
@@ -632,9 +632,6 @@ static void ar9003_hw_override_ini(struct ath_hw *ah)
                AR_PCU_MISC_MODE2_CFP_IGNORE;
         REG_WRITE(ah, AR_PCU_MISC_MODE2, val);
 
-        REG_SET_BIT(ah, AR_PHY_CCK_DETECT,
-                    AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV);
-
         if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
                 REG_WRITE(ah, AR_GLB_SWREG_DISCONT_MODE,
                           AR_GLB_SWREG_DISCONT_EN_BT_WLAN);