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[2620:137:e000::1:20]) by mx.google.com with ESMTP id ca19-20020a170906a3d300b00992bf8cc68asi8836932ejb.968.2023.07.25.00.27.28; Tue, 25 Jul 2023 00:27:54 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@quicinc.com header.s=qcppdkim1 header.b=kN0t4tz0; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=quicinc.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232358AbjGYHQm (ORCPT + 99 others); Tue, 25 Jul 2023 03:16:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40124 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232298AbjGYHQh (ORCPT ); Tue, 25 Jul 2023 03:16:37 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 30D0B10C8; Tue, 25 Jul 2023 00:16:33 -0700 (PDT) Received: from pps.filterd (m0279872.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 36P1RqKu020562; Tue, 25 Jul 2023 07:16:21 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=qcppdkim1; bh=2+FYJqvd8KPGLBxHJyZuzJMgY6Vqc6U1VDQqXT1I4S0=; b=kN0t4tz0f06Movn8p08l+EPygFNk4MKdKJjflGK2NM1C+rQ7ZoPieA2tZnDLneLyjSUb MPxUG20izW71iMMe9wBez6+ilecfY+Od2Mn9B4RlrUwrnxpDPcgIuMGHHxVUo80/8s54 eXeYxRsHAOOuhlnTjT8j188l1qorUpFr2yOQCf6IaYQgEx5s+e51kxmMFdx7n7SSRitp jBfAmrcscWRk9Tqm4WzorQGEVPixhFADE7vThAcKUFPq70GOF8iN/jJxF7yb4r57+W6s YOyMH/nMX1h0A1huwdzXsnkXDLYDAiEbbljDMrC5v8x/LzkPUPsC44Q7p/A4haTs7Jzv 1w== Received: from nalasppmta03.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3s1y6m14cw-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 25 Jul 2023 07:16:21 +0000 Received: from nalasex01c.na.qualcomm.com (nalasex01c.na.qualcomm.com [10.47.97.35]) by NALASPPMTA03.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 36P7GJfD028958 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 25 Jul 2023 07:16:19 GMT Received: from taozha-gv.qualcomm.com (10.80.80.8) by nalasex01c.na.qualcomm.com (10.47.97.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.30; Tue, 25 Jul 2023 00:16:14 -0700 From: Tao Zhang To: Mathieu Poirier , Suzuki K Poulose , Alexander Shishkin , Konrad Dybcio , Mike Leach , Rob Herring , Krzysztof Kozlowski CC: Tao Zhang , Jinlong Mao , Leo Yan , Greg Kroah-Hartman , , , , , Tingwei Zhang , Yuanfang Zhang , Trilok Soni , Hao Zhang , , Subject: [PATCH v7 01/13] coresight-tpdm: Remove the unnecessary lock Date: Tue, 25 Jul 2023 15:15:41 +0800 Message-ID: <1690269353-10829-2-git-send-email-quic_taozha@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1690269353-10829-1-git-send-email-quic_taozha@quicinc.com> References: <1690269353-10829-1-git-send-email-quic_taozha@quicinc.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01c.na.qualcomm.com (10.47.97.35) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: fiZYnpDHU25wf9xyX6sfq_aXB4TpL58b X-Proofpoint-ORIG-GUID: fiZYnpDHU25wf9xyX6sfq_aXB4TpL58b X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-07-25_02,2023-07-24_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 clxscore=1015 mlxlogscore=999 bulkscore=0 adultscore=0 spamscore=0 lowpriorityscore=0 suspectscore=0 phishscore=0 malwarescore=0 impostorscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2307250064 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Remove the unnecessary lock "CS_{UN,}LOCK" in TPDM driver. This lock is only needed while writing the data to Coresight registers. Signed-off-by: Tao Zhang --- drivers/hwtracing/coresight/coresight-tpdm.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c index f4854af..b645612 100644 --- a/drivers/hwtracing/coresight/coresight-tpdm.c +++ b/drivers/hwtracing/coresight/coresight-tpdm.c @@ -114,11 +114,9 @@ static void tpdm_init_default_data(struct tpdm_drvdata *drvdata) { u32 pidr; - CS_UNLOCK(drvdata->base); /* Get the datasets present on the TPDM. */ pidr = readl_relaxed(drvdata->base + CORESIGHT_PERIPHIDR0); drvdata->datasets |= pidr & GENMASK(TPDM_DATASETS - 1, 0); - CS_LOCK(drvdata->base); } /* -- 2.7.4