From d229562b34c4308bc6805c8c34bfd6d1d46b7cc2 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Mon, 29 Sep 2014 20:45:41 +0200 Subject: [PATCH] ath9k_hw: reduce ANI spur immunity setting on HT40 extension channel The cycpwr_thr1 value needs to be lower on the extension channel than on the control channel, similar to how the register settings are programmed in the initvals. Also drop the unnecessary check for HT40 - this register can always be written. This patch has been reported to improve HT40 stability and throughput in some environments. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/ar5008_phy.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/ar5008_phy.c b/drivers/net/wireless/ath/ath9k/ar5008_phy.c index 3b3e91057a4cb..b72d0be716dbd 100644 --- a/drivers/net/wireless/ath/ath9k/ar5008_phy.c +++ b/drivers/net/wireless/ath/ath9k/ar5008_phy.c @@ -1042,9 +1042,8 @@ static bool ar5008_hw_ani_control_new(struct ath_hw *ah, REG_RMW_FIELD(ah, AR_PHY_TIMING5, AR_PHY_TIMING5_CYCPWR_THR1, value); - if (IS_CHAN_HT40(ah->curchan)) - REG_RMW_FIELD(ah, AR_PHY_EXT_CCA, - AR_PHY_EXT_TIMING5_CYCPWR_THR1, value); + REG_RMW_FIELD(ah, AR_PHY_EXT_CCA, + AR_PHY_EXT_TIMING5_CYCPWR_THR1, value - 1); if (level != aniState->spurImmunityLevel) { ath_dbg(common, ANI, -- 2.39.5