Return-path: Received: from static.88-198-24-112.clients.your-server.de ([88.198.24.112]:56253 "EHLO nbd.name" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753249AbaI2Sps (ORCPT ); Mon, 29 Sep 2014 14:45:48 -0400 From: Felix Fietkau To: linux-wireless@vger.kernel.org Cc: linville@tuxdriver.com Subject: [PATCH 2/3] ath9k_hw: reduce ANI spur immunity setting on HT40 extension channel Date: Mon, 29 Sep 2014 20:45:41 +0200 Message-Id: <1412016342-21227-2-git-send-email-nbd@openwrt.org> (sfid-20140929_204553_005920_8B7D24A6) In-Reply-To: <1412016342-21227-1-git-send-email-nbd@openwrt.org> References: <1412016342-21227-1-git-send-email-nbd@openwrt.org> Sender: linux-wireless-owner@vger.kernel.org List-ID: 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 --- 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 3b3e910..b72d0be 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, -- 2.0.4