Return-path: Received: from mail-lpp01m010-f46.google.com ([209.85.215.46]:44621 "EHLO mail-lpp01m010-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752232Ab1K3Uqq (ORCPT ); Wed, 30 Nov 2011 15:46:46 -0500 Received: by mail-lpp01m010-f46.google.com with SMTP id w12so290792lag.19 for ; Wed, 30 Nov 2011 12:46:45 -0800 (PST) From: Nikolay Martynov To: linville@tuxdriver.com Cc: linux-wireless@vger.kernel.org, Nikolay Martynov Subject: [PATCH v3 3/4] ath9k: use config.enable_ani to check if ani should be performed Date: Wed, 30 Nov 2011 15:46:19 -0500 Message-Id: <1322685980-8757-4-git-send-email-mar.kolya@gmail.com> (sfid-20111130_214649_487500_E233879D) In-Reply-To: <1322685980-8757-1-git-send-email-mar.kolya@gmail.com> References: <20111130201051.GC2477@tuxdriver.com> <1322685980-8757-1-git-send-email-mar.kolya@gmail.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: Currently in ath9k code there is an attempt which is meant to disable ANI for ar9100 and ar9340. But it doesn't really achieve this. All it does is disable ANI init and setup (i.e. calls to ath9k_hw_ani_setup and ath9k_hw_ani_init). Since ath9k_hw_ani_setup is not called ah->config.ani_poll_interval is never initialized (i.e. it is always zero) and ath_ani_calibrate always executes ANI procedures (over uninitialized ANI parameters). Moreover, ath_ani_calibrate is being called each 1ms because common->ani.timer is set to zero interval because ah->config.ani_poll_interval==0 (and thus smallest value of all intervals). Normally it should not be called this often. This patch changes the code so config.enable_ani is used to check if ANI should be performed. config.enable_ani is initialized to true by default. This patch sets it to false for ar9100 and ar9340. Signed-off-by: Nikolay Martynov --- drivers/net/wireless/ath/ath9k/htc_drv_main.c | 3 ++- drivers/net/wireless/ath/ath9k/hw.c | 6 +++++- drivers/net/wireless/ath/ath9k/main.c | 5 +++-- 3 files changed, 10 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_main.c b/drivers/net/wireless/ath/ath9k/htc_drv_main.c index 0b9a0e8..391d59c 100644 --- a/drivers/net/wireless/ath/ath9k/htc_drv_main.c +++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c @@ -808,7 +808,8 @@ void ath9k_htc_ani_work(struct work_struct *work) } /* Verify whether we must check ANI */ - if ((timestamp - common->ani.checkani_timer) >= ATH_ANI_POLLINTERVAL) { + if (sc->sc_ah->config.enable_ani && + (timestamp - common->ani.checkani_timer) >= ATH_ANI_POLLINTERVAL) { aniflag = true; common->ani.checkani_timer = timestamp; } diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c index 662ab7e..44f785c 100644 --- a/drivers/net/wireless/ath/ath9k/hw.c +++ b/drivers/net/wireless/ath/ath9k/hw.c @@ -504,7 +504,7 @@ static int ath9k_hw_post_init(struct ath_hw *ah) return ecode; } - if (!AR_SREV_9100(ah) && !AR_SREV_9340(ah)) { + if (ah->config.enable_ani) { ath9k_hw_ani_setup(ah); ath9k_hw_ani_init(ah); } @@ -610,6 +610,10 @@ static int __ath9k_hw_init(struct ath_hw *ah) if (!AR_SREV_9300_20_OR_LATER(ah)) ah->ani_function &= ~ATH9K_ANI_MRC_CCK; + /* disable ANI for 9100 and 9340 */ + if (AR_SREV_9100(ah) || AR_SREV_9340(ah)) + ah->config.enable_ani = false; + ath9k_hw_init_mode_regs(ah); if (!ah->is_pciexpress) diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index 937fcfa..cfd10cc 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -581,8 +581,9 @@ void ath_ani_calibrate(unsigned long data) } /* Verify whether we must check ANI */ - if ((timestamp - common->ani.checkani_timer) >= - ah->config.ani_poll_interval) { + if (sc->sc_ah->config.enable_ani + && (timestamp - common->ani.checkani_timer) >= + ah->config.ani_poll_interval) { aniflag = true; common->ani.checkani_timer = timestamp; } -- 1.7.4.1