From patchwork Sun Jul 1 14:23:52 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Manoharan, Rajkumar" X-Patchwork-Id: 1144231 Return-Path: X-Original-To: patchwork-linux-wireless@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id 6ADF23FE4F for ; Sun, 1 Jul 2012 14:22:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755738Ab2GAOWt (ORCPT ); Sun, 1 Jul 2012 10:22:49 -0400 Received: from wolverine02.qualcomm.com ([199.106.114.251]:59839 "EHLO wolverine02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755734Ab2GAOWs (ORCPT ); Sun, 1 Jul 2012 10:22:48 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=qca.qualcomm.com; i=@qca.qualcomm.com; q=dns/txt; s=qcdkim; t=1341152569; x=1372688569; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=2q/flrYCz+s05tO7JGTEEkMFnOixhT6sqEV4y+s5Tng=; b=jXvJcfFzlOuHod/NA9Tg4A4nFtnF6KbNWwCErVEkQbHzcmEqGqqA9daz t+2v7+y7LIgDdIozrxLTBrfJQrWQYwDqMVRGyu/mNM8kAbAsXsdzM3gXL 9kRk+nSBP0sZ5FZJkUG3DBxvOkN1oHJWb26Xdcr+7tcs1jxTU9+eqRdKG A=; X-IronPort-AV: E=McAfee;i="5400,1158,6758"; a="204098105" Received: from ironmsg03-r.qualcomm.com ([172.30.46.17]) by wolverine02.qualcomm.com with ESMTP; 01 Jul 2012 07:22:49 -0700 X-IronPort-AV: E=Sophos;i="4.77,504,1336374000"; d="scan'208";a="281459819" Received: from nasanexhc08.na.qualcomm.com ([172.30.39.7]) by Ironmsg03-R.qualcomm.com with ESMTP/TLS/RC4-SHA; 01 Jul 2012 07:22:49 -0700 Received: from qcmail1.qualcomm.com (172.30.39.5) by qcmail1.qualcomm.com (172.30.39.7) with Microsoft SMTP Server (TLS) id 14.2.283.3; Sun, 1 Jul 2012 07:22:46 -0700 Received: by qcmail1.qualcomm.com (sSMTP sendmail emulation); Sun, 01 Jul 2012 19:54:10 +0530 From: Rajkumar Manoharan To: CC: , Rajkumar Manoharan Subject: [PATCH v3 2/5] ath9k_hw: do not load noise floor readings when it is running Date: Sun, 1 Jul 2012 19:53:52 +0530 Message-ID: <1341152635-4840-2-git-send-email-rmanohar@qca.qualcomm.com> X-Mailer: git-send-email 1.7.11.1 In-Reply-To: <1341152635-4840-1-git-send-email-rmanohar@qca.qualcomm.com> References: <1341152635-4840-1-git-send-email-rmanohar@qca.qualcomm.com> MIME-Version: 1.0 X-Originating-IP: [172.30.39.5] Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Noise floor calibration is performed on longcal interval and the reading will be updated in history buffer. On rare occasions, the previous noisefloor calibration might not be completed within the period and trying to load nf reading will be failed. In such situation, postpone the nf cabliration to next cycle to give enough time to complete the calibration. This was already taken care for ar9002 chips. Signed-off-by: Rajkumar Manoharan --- drivers/net/wireless/ath/ath9k/ar9003_calib.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/ar9003_calib.c b/drivers/net/wireless/ath/ath9k/ar9003_calib.c index d7deb8c..84b558d 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_calib.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_calib.c @@ -159,14 +159,11 @@ static bool ar9003_hw_calibrate(struct ath_hw *ah, } } - /* Do NF cal only at longer intervals */ - if (longcal) { - /* - * Get the value from the previous NF cal and update - * history buffer. - */ - ath9k_hw_getnf(ah, chan); - + /* + * Do NF cal only at longer intervals. Get the value from + * the previous NF cal and update history buffer. + */ + if (longcal && ath9k_hw_getnf(ah, chan)) { /* * Load the NF from history buffer of the current channel. * NF is slow time-variant, so it is OK to use a historical