From patchwork Wed Nov 13 01:56:29 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Baochen Qiang X-Patchwork-Id: 13873098 X-Patchwork-Delegate: quic_jjohnson@quicinc.com Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 95C9F43ABC for ; Wed, 13 Nov 2024 01:56:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731463014; cv=none; b=bMt6q/ONeIhXXn1eFy7BdSLeq4ruwhoxCuaw+l5jsWtFyvtv4pNPoqOLdKffP6Ud9RhtRlN40CUlGaaJDTtfO9o3ijhHcwoSsQo/iuxkonCzdUO+ApAHfBKW42aMMeg10l3TvQ5g2+eTHVpKl3mv+38ZF1UqWiIrrGd+dNXd6MA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731463014; c=relaxed/simple; bh=F+WlJVuqHOv/aPzw4AKbwyq5xIJr+HZRQBRdzHiTEo0=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=M5mBFOtFw0eKe4Vcq9WbkIgHP6JcivT4SEhazQgeXh4tIQRtzxjjWZYhmXNqlBLWjCv3ucZLsR5C5DWZl/KyhLFv8K8oJzVY43p81+6CLc+EarnoJsUl7DdwwI3pw1PMS58Qk0GdTRsmsqahxxt+FchgGaQYGX4ZgjSyjbPCqjM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=gXFWiJfl; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="gXFWiJfl" Received: from pps.filterd (m0279862.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 4ACMRm33003783; Wed, 13 Nov 2024 01:56:50 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= m/ZD8PCKwOqK9sf7A7yBcLWhWjk8hGcyzE99TN+gbyA=; b=gXFWiJflCC1+LxUm XsZn7SDNq/GHKayfoVWin+2DpztnypIJd2GQA+1KGtzBDGHgzWeB8vdtXdvM4h5f g635In95favKYZeBhEB3dEjUS4ylCVZwzLPSQfvLlhMrDehFLHBIwgdl05HP9e3S hj4iBREwfn290RuRTG3dPYOSA2/vA1VOTCzBE3aTjwN+wttAH0Do8fNj3vh7ZNRS X9sIgpMSd7OcPP7Ea2+0I1ezBUDZf17D1TvirpPvNLSi91i5e1K+Q5685oyMLJau S0m2p9luSidnXOXJKbvnR8I7Fj960CNw3KXjprJGGvZuT23SHXyQwMZfdMF4UOZn F5fRXQ== Received: from nalasppmta01.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 42t0gm14d1-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 13 Nov 2024 01:56:49 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA01.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 4AD1unaG025835 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 13 Nov 2024 01:56:49 GMT Received: from bqiang-SFF.qca.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Tue, 12 Nov 2024 17:56:47 -0800 From: Baochen Qiang To: CC: , Subject: [PATCH 4/6] wifi: ath11k: adjust unlock sequence in ath11k_update_stats_event() Date: Wed, 13 Nov 2024 09:56:29 +0800 Message-ID: <20241113015631.3105-5-quic_bqiang@quicinc.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20241113015631.3105-1-quic_bqiang@quicinc.com> References: <20241113015631.3105-1-quic_bqiang@quicinc.com> Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: Cw8PLCcTpxm2K7gVKrXPW3sF2JSvFL46 X-Proofpoint-GUID: Cw8PLCcTpxm2K7gVKrXPW3sF2JSvFL46 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 phishscore=0 spamscore=0 clxscore=1015 mlxscore=0 mlxlogscore=999 lowpriorityscore=0 impostorscore=0 adultscore=0 priorityscore=1501 malwarescore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2411130016 Currently RCU lock and ar->data_lock are acquired in a sequence of rcu_read_lock() spin_lock_bh(&ar->data_lock) but released in a sequence of rcu_read_unlock() spin_unlock_bh(&ar->data_lock) Although there are no apparent issues with this, reorder them to achieve symmetry. Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.37 Signed-off-by: Baochen Qiang Acked-by: Kalle Valo --- drivers/net/wireless/ath/ath11k/wmi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath11k/wmi.c b/drivers/net/wireless/ath/ath11k/wmi.c index 641cc979589a..0f7df1fbaed8 100644 --- a/drivers/net/wireless/ath/ath11k/wmi.c +++ b/drivers/net/wireless/ath/ath11k/wmi.c @@ -8235,8 +8235,8 @@ static void ath11k_update_stats_event(struct ath11k_base *ab, struct sk_buff *sk complete: complete(&ar->fw_stats_complete); - rcu_read_unlock(); spin_unlock_bh(&ar->data_lock); + rcu_read_unlock(); /* Since the stats's pdev, vdev and beacon list are spliced and reinitialised * at this point, no need to free the individual list.