ath9k: Fix QuickDrop usage

commit 93c1cfbe598f72cfa7be49e4a7d2a1d482e15119 upstream.

Bit 5 in the miscConfiguration field of the base EEPROM
header denotes whether QuickDrop is enabled or not. Fix
the incorrect usage of BIT(1) and also make sure that
this is done only for the required chips.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
index 25b8bbbe74fe347f6f0f17fcc129ebd100f88301..e71413c8e0c6f586a3a6c1da3c8e4a2ede08d962 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
@@ -3937,18 +3937,20 @@ static void ar9003_hw_quick_drop_apply(struct ath_hw *ah, u16 freq)
        int quick_drop;
        s32 t[3], f[3] = {5180, 5500, 5785};
 
-       if (!(pBase->miscConfiguration & BIT(1)))
+       if (!(pBase->miscConfiguration & BIT(4)))
                return;
 
-       if (freq < 4000)
-               quick_drop = eep->modalHeader2G.quick_drop;
-       else {
-               t[0] = eep->base_ext1.quick_drop_low;
-               t[1] = eep->modalHeader5G.quick_drop;
-               t[2] = eep->base_ext1.quick_drop_high;
-               quick_drop = ar9003_hw_power_interpolate(freq, f, t, 3);
+       if (AR_SREV_9300(ah) || AR_SREV_9580(ah) || AR_SREV_9340(ah)) {
+               if (freq < 4000) {
+                       quick_drop = eep->modalHeader2G.quick_drop;
+               } else {
+                       t[0] = eep->base_ext1.quick_drop_low;
+                       t[1] = eep->modalHeader5G.quick_drop;
+                       t[2] = eep->base_ext1.quick_drop_high;
+                       quick_drop = ar9003_hw_power_interpolate(freq, f, t, 3);
+               }
+               REG_RMW_FIELD(ah, AR_PHY_AGC, AR_PHY_AGC_QUICK_DROP, quick_drop);
        }
-       REG_RMW_FIELD(ah, AR_PHY_AGC, AR_PHY_AGC_QUICK_DROP, quick_drop);
 }
 
 static void ar9003_hw_txend_to_xpa_off_apply(struct ath_hw *ah, bool is2ghz)