ath9k_hw: Fix incorrect spur_freq_sd for AR9003

Spur frequency was incorrectly computed with 10Mhz offset
which could cause the filter would not notch out the spur
and also this could improve rx sensitivity in HT40.

Cc: Madhan Jaganathan <[email protected]>
Signed-off-by: Rajkumar Manoharan <[email protected]>
Signed-off-by: John W. Linville <[email protected]>

diff --git a/drivers/net/wireless/ath/ath9k/ar9003_phy.c b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
index 1baca8e4715d9ad62e97c8ef8b9e0b4ec431f240..a0aaa6855486cb9914fa3445368fa48890a2db94 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
@@ -370,7 +370,7 @@ static void ar9003_hw_spur_ofdm_work(struct ath_hw *ah,
                        else
                                spur_subchannel_sd = 0;
 
-                       spur_freq_sd = ((freq_offset + 10) << 9) / 11;
+                       spur_freq_sd = (freq_offset << 9) / 11;
 
                } else {
                        if (REG_READ_FIELD(ah, AR_PHY_GEN_CTRL,
@@ -379,7 +379,7 @@ static void ar9003_hw_spur_ofdm_work(struct ath_hw *ah,
                        else
                                spur_subchannel_sd = 1;
 
-                       spur_freq_sd = ((freq_offset - 10) << 9) / 11;
+                       spur_freq_sd = (freq_offset << 9) / 11;
 
                }