[PATCH] ath9k: Fix OFDM weak signal detection for AP mode

[Sujith Manoharan <sujith@msujith.org>]

From: Sujith Manoharan <c_manoha@qca.qualcomm.com>

The commit "ath9k_hw: improve ANI processing and rx desensitizing parameters"
changed the OFDM weak signal detection logic to disable it
for AP mode, which is not allowed. Fix this and enable it always
for AP mode.

Cc: stable@vger.kernel.org
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
---
 drivers/net/wireless/ath/ath9k/ani.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/net/wireless/ath/ath9k/ani.c b/drivers/net/wireless/ath/ath9k/ani.c
index e91725b..3ec4c53 100644
--- a/drivers/net/wireless/ath/ath9k/ani.c
+++ b/drivers/net/wireless/ath/ath9k/ani.c
@@ -177,10 +177,15 @@ static void ath9k_hw_set_ofdm_nil(struct ath_hw *ah, u8 immunityLevel,
 	    BEACON_RSSI(ah) <= ATH9K_ANI_RSSI_THR_HIGH)
 		weak_sig = true;
 
-	if (aniState->ofdmWeakSigDetect != weak_sig)
-			ath9k_hw_ani_control(ah,
-				ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION,
-				entry_ofdm->ofdm_weak_signal_on);
+	/*
+	 * OFDM Weak signal detection is always enabled for AP mode.
+	 */
+	if (ah->opmode != NL80211_IFTYPE_AP &&
+	    aniState->ofdmWeakSigDetect != weak_sig) {
+		ath9k_hw_ani_control(ah,
+				     ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION,
+				     entry_ofdm->ofdm_weak_signal_on);
+	}
 
 	if (aniState->ofdmNoiseImmunityLevel >= ATH9K_ANI_OFDM_DEF_LEVEL) {
 		ah->config.ofdm_trig_high = ATH9K_ANI_OFDM_TRIG_HIGH;
-- 
1.8.3