From patchwork Sun Mar 15 15:06:25 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rajkumar Manoharan X-Patchwork-Id: 6013351 Return-Path: X-Original-To: patchwork-ath10k@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 044699F2A9 for ; Sun, 15 Mar 2015 15:08:36 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 374E320268 for ; Sun, 15 Mar 2015 15:08:35 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 564F72024F for ; Sun, 15 Mar 2015 15:08:34 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1YXA9X-0007vu-CJ; Sun, 15 Mar 2015 15:08:31 +0000 Received: from wolverine01.qualcomm.com ([199.106.114.254]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YXA9V-0007oY-Fj for ath10k@lists.infradead.org; Sun, 15 Mar 2015 15:08:29 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=qti.qualcomm.com; i=@qti.qualcomm.com; q=dns/txt; s=qcdkim; t=1426432109; x=1457968109; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=6HBT+Lw9VOSlaUi8E1KWjbU0xV3vFUvCWXxGqc0x3rY=; b=QjZGq66lPXZzcl2XpTHwqtacFjjDW3Z+3EjBXEjFkU9H1ekuCEZlEm0X APE6VmtiaZRqNUzNrQ147ZygC47HJYiEpCvF1ecWN2jS/TgDvgShH6ZVH Dd7A9Cg0DQsDbb2khl8VdzsO8TMlfGVPd8CVZVTZ3+OlwFe0uUuhZ89c7 0=; X-IronPort-AV: E=McAfee;i="5600,1067,7740"; a="108450518" Received: from ironmsg04-r.qualcomm.com ([172.30.46.18]) by wolverine01.qualcomm.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 15 Mar 2015 08:08:12 -0700 X-IronPort-AV: E=Sophos;i="5.11,404,1422950400"; d="scan'208";a="925558125" Received: from nasanexm02a.na.qualcomm.com ([10.85.0.41]) by Ironmsg04-R.qualcomm.com with ESMTP/TLS/RC4-SHA; 15 Mar 2015 08:08:13 -0700 Received: from aphydexm01b.ap.qualcomm.com (10.252.127.11) by nasanexm02a.na.qualcomm.com (10.85.0.41) with Microsoft SMTP Server (TLS) id 15.0.995.29; Sun, 15 Mar 2015 08:08:10 -0700 Received: from qcmail1.qualcomm.com (10.80.80.8) by aphydexm01b.ap.qualcomm.com (10.252.127.11) with Microsoft SMTP Server (TLS) id 15.0.995.29; Sun, 15 Mar 2015 08:08:02 -0700 Received: by qcmail1.qualcomm.com (sSMTP sendmail emulation); Sun, 15 Mar 2015 20:37:55 +0530 From: Rajkumar Manoharan To: Subject: [PATCH 6/6] ath10k: move driver state check before setting throttle Date: Sun, 15 Mar 2015 20:36:25 +0530 Message-ID: <1426431985-16332-7-git-send-email-rmanohar@qti.qualcomm.com> X-Mailer: git-send-email 2.3.2 In-Reply-To: <1426431985-16332-1-git-send-email-rmanohar@qti.qualcomm.com> References: <1426431985-16332-1-git-send-email-rmanohar@qti.qualcomm.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: NASANEXM01F.na.qualcomm.com (10.85.0.32) To aphydexm01b.ap.qualcomm.com (10.252.127.11) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150315_080829_567507_3C93AD44 X-CRM114-Status: GOOD ( 11.74 ) X-Spam-Score: -5.1 (-----) Cc: linux-wireless@vger.kernel.org, Rajkumar Manoharan X-BeenThere: ath10k@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "ath10k" Errors-To: ath10k-bounces+patchwork-ath10k=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED, T_DKIM_INVALID, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Since thermal daemon is unaware of the device state, it might try to adjust the throttle state when the device is powered down. So the driver caches the value and will configure it while powering up the target. The cached value will be programed later once the device is brought up. In such case, returning error status is confusing and misleading the user application. Hence moving the driver state check before sending wmi command to target. Reported-by: Matthias Kaehlcke Signed-off-by: Rajkumar Manoharan --- drivers/net/wireless/ath/ath10k/thermal.c | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/thermal.c b/drivers/net/wireless/ath/ath10k/thermal.c index 0b4cd3f..c48c71d 100644 --- a/drivers/net/wireless/ath/ath10k/thermal.c +++ b/drivers/net/wireless/ath/ath10k/thermal.c @@ -50,7 +50,6 @@ ath10k_thermal_set_cur_throttle_state(struct thermal_cooling_device *cdev, unsigned long throttle_state) { struct ath10k *ar = cdev->devdata; - int ret = 0; if (throttle_state > ATH10K_THERMAL_THROTTLE_MAX) { ath10k_warn(ar, "throttle state %ld is exceeding the limit %d\n", @@ -59,16 +58,9 @@ ath10k_thermal_set_cur_throttle_state(struct thermal_cooling_device *cdev, } mutex_lock(&ar->conf_mutex); ar->thermal.throttle_state = throttle_state; - - if (ar->state != ATH10K_STATE_ON) { - ret = -ENETDOWN; - goto out; - } - ath10k_thermal_set_throttling(ar); -out: mutex_unlock(&ar->conf_mutex); - return ret; + return 0; } static struct thermal_cooling_device_ops ath10k_thermal_ops = { @@ -147,6 +139,9 @@ void ath10k_thermal_set_throttling(struct ath10k *ar) lockdep_assert_held(&ar->conf_mutex); + if (ar->state != ATH10K_STATE_ON) + return; + period = ar->thermal.quiet_period; duration = (period * ar->thermal.throttle_state) / 100; enabled = duration ? 1 : 0;