From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 892CDC433E2 for ; Wed, 22 Jul 2020 17:21:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 61D4420781 for ; Wed, 22 Jul 2020 17:21:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731435AbgGVRVB (ORCPT ); Wed, 22 Jul 2020 13:21:01 -0400 Received: from foss.arm.com ([217.140.110.172]:59974 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726666AbgGVRVA (ORCPT ); Wed, 22 Jul 2020 13:21:00 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 20F4131B; Wed, 22 Jul 2020 10:21:00 -0700 (PDT) Received: from ewhatever.cambridge.arm.com (ewhatever.cambridge.arm.com [10.1.197.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 3C6A53F66F; Wed, 22 Jul 2020 10:20:59 -0700 (PDT) From: Suzuki K Poulose To: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org, mike.leach@linaro.org, mathieu.poirier@linaro.org, coresight@lists.linaro.org, Suzuki K Poulose Subject: [RFC PATCH 04/14] coresight: etm4x: Free up argument of etm4_init_arch_data Date: Wed, 22 Jul 2020 18:20:30 +0100 Message-Id: <20200722172040.1299289-5-suzuki.poulose@arm.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200722172040.1299289-1-suzuki.poulose@arm.com> References: <20200722172040.1299289-1-suzuki.poulose@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org etm4_init_arch_data is called early during the device probe, even before the coresight_device is registered. Since we are about to replace the direct access via abstraction layer, we need a way to pass in the csdev_access for the given device. Towards this free up the argument, which is already available via etmdrvdata[smp_processor_id()]. Cc: Mathieu Poirier Cc: Mike Leach Signed-off-by: Suzuki K Poulose --- drivers/hwtracing/coresight/coresight-etm4x.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-etm4x.c b/drivers/hwtracing/coresight/coresight-etm4x.c index 7bb74c659c4f..67deb4a4e618 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x.c +++ b/drivers/hwtracing/coresight/coresight-etm4x.c @@ -614,7 +614,8 @@ static const struct coresight_ops etm4_cs_ops = { .source_ops = &etm4_source_ops, }; -static void etm4_init_arch_data(void *info) + +static void etm4_init_arch_data(void *__unused) { u32 etmidr0; u32 etmidr1; @@ -622,8 +623,14 @@ static void etm4_init_arch_data(void *info) u32 etmidr3; u32 etmidr4; u32 etmidr5; - struct etmv4_drvdata *drvdata = info; - int i; + struct etmv4_drvdata *drvdata; + int i, cpu; + + cpu = raw_smp_processor_id(); + drvdata = etmdrvdata[cpu]; + + if (WARN_ON(!etmdrvdata[cpu])) + return; /* Make sure all registers are accessible */ etm4_os_unlock(drvdata); @@ -1517,7 +1524,7 @@ static int etm4_probe(struct amba_device *adev, const struct amba_id *id) etmdrvdata[drvdata->cpu] = drvdata; if (smp_call_function_single(drvdata->cpu, - etm4_init_arch_data, drvdata, 1)) + etm4_init_arch_data, NULL, 1)) dev_err(dev, "ETM arch init failed\n"); ret = etm4_pm_setup_cpuslocked(); -- 2.24.1