From patchwork Fri Jun 28 19:48:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?TsOtY29sYXMgRi4gUi4gQS4gUHJhZG8=?= X-Patchwork-Id: 13716559 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E69CBC30658 for ; Fri, 28 Jun 2024 19:48:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:Message-Id: Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date:From: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=zBX3hAIQjLcOjmk2fTsZlzOlj6Qxo24lmH7dnAO0cr4=; b=MOwY80ODh6xuGcdUSqd6MygThw 809tRdCU1SMMBBo6NZXKQA7s5ZP0WXluIQc9hVcB2bDJcY+I7Wa16afdcQYYpCvk6YVUlRCZ5gxrw FqrVZmglQt+ywOFvQic/9haXCF9v88rPvIbTpQbC01LEKzbFBOievg6SGPRz2YcmPfkhoIg4Hl+N5 5NDD5u3FonzPERZ6ZGL1HXP07BLsirdjSEUN6aXlgOIAAcTg9RHvOhkbMirjUc4BM8x63ZsGsK88h EPKTFOet0dSeQtxvC9KmZr2u9x8+kfPJha71eeQgSaymLE3f1YpbOZBWWqtPKJ9fguSBPHLn8P35N TYrm2/PQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sNHaM-0000000En1O-3aXK; Fri, 28 Jun 2024 19:48:42 +0000 Received: from madrid.collaboradmins.com ([2a00:1098:ed:100::25]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sNHaD-0000000En0M-2Zqq; Fri, 28 Jun 2024 19:48:35 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1719604111; bh=paO3Q85MhNCJaXdzxnipweZ72m9WbwKAh6xyx8Yrj2k=; h=From:Date:Subject:To:Cc:From; b=VdelCPIu23TTul7DOTm/ObQnaDsLxrwtLUVnUecVFnTMw5MGFAapqd4180iLJkYVz DfY8bCjNYRsxSgw+71MAZSoDxMBhcYv7foDLTIMckQJq2kCk4HCugpc8lPyx7c9dMY n8ft00UMEOsFmwU7U7qrAAHxfZ0BI4+Zqn7oTxxksN05HylSlEpIWGqWvcrhllwBQu p+pPsRp80ygruO/hDwASjbV5ciCCI+wxRca00g4ovQtbVYJDAtsNAAwcH1VJuLvyYm Z0j0B1cDweXmA4hsq54tSlqoNnJ/7N/NLL0GX0mjpuRD0NKIFN7XbdK1WLD404EwGI sjJpSDjzDi78Q== Received: from [192.168.1.175] (zone.collabora.co.uk [167.235.23.81]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: nfraprado) by madrid.collaboradmins.com (Postfix) with ESMTPSA id A0F37378219E; Fri, 28 Jun 2024 19:48:29 +0000 (UTC) From: =?utf-8?b?TsOtY29sYXMgRi4gUi4gQS4gUHJhZG8=?= Date: Fri, 28 Jun 2024 15:48:23 -0400 Subject: [PATCH] cpufreq: mediatek: Use dev_err_probe in every error path in probe MIME-Version: 1.0 Message-Id: <20240628-mtk-cpufreq-dvfs-fail-init-err-v1-1-19c55db23011@collabora.com> X-B4-Tracking: v=1; b=H4sIAIYTf2YC/x3NQQqDMBBA0avIrB2IgyTQq4iLkEzaoW3UiQZBv HtDl2/z/wWFVbjAo7tAuUqRJTcMfQfh5fOTUWIzkKHRWHL43d8Y1iMpbxhrKpi8fFCy7MiqaLy 1FLyjyAQtsionOf+Dab7vHxN1UZdwAAAA To: "Rafael J. Wysocki" , Viresh Kumar , Matthias Brugger , AngeloGioacchino Del Regno Cc: kernel@collabora.com, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, =?utf-8?b?TsOtY29sYXMgRi4gUi4gQS4gUHJh?= =?utf-8?b?ZG8=?= X-Mailer: b4 0.13.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240628_124833_829322_36A9F1A2 X-CRM114-Status: GOOD ( 14.86 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Use the dev_err_probe() helper to log the errors on every error path in the probe function and its sub-functions. This includes * adding error messages where there was none * converting over dev_err/dev_warn * removing the top-level error message after mtk_cpu_dvfs_info_init() is called, since every error path inside that function already logs the error reason. This gets rid of the misleading error message when probe is deferred: mtk-cpufreq mtk-cpufreq: failed to initialize dvfs info for cpu0 Signed-off-by: Nícolas F. R. A. Prado Reviewed-by: AngeloGioacchino Del Regno --- drivers/cpufreq/mediatek-cpufreq.c | 66 ++++++++++++++++++-------------------- 1 file changed, 31 insertions(+), 35 deletions(-) --- base-commit: 0fc4bfab2cd45f9acb86c4f04b5191e114e901ed change-id: 20240627-mtk-cpufreq-dvfs-fail-init-err-0a662ca72de2 Best regards, diff --git a/drivers/cpufreq/mediatek-cpufreq.c b/drivers/cpufreq/mediatek-cpufreq.c index 518606adf14e..b21425bb83be 100644 --- a/drivers/cpufreq/mediatek-cpufreq.c +++ b/drivers/cpufreq/mediatek-cpufreq.c @@ -390,28 +390,23 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu) int ret; cpu_dev = get_cpu_device(cpu); - if (!cpu_dev) { - dev_err(cpu_dev, "failed to get cpu%d device\n", cpu); - return -ENODEV; - } + if (!cpu_dev) + return dev_err_probe(cpu_dev, -ENODEV, "failed to get cpu%d device\n", cpu); info->cpu_dev = cpu_dev; info->ccifreq_bound = false; if (info->soc_data->ccifreq_supported) { info->cci_dev = of_get_cci(info->cpu_dev); - if (IS_ERR(info->cci_dev)) { - ret = PTR_ERR(info->cci_dev); - dev_err(cpu_dev, "cpu%d: failed to get cci device\n", cpu); - return -ENODEV; - } + if (IS_ERR(info->cci_dev)) + return dev_err_probe(cpu_dev, PTR_ERR(info->cci_dev), + "cpu%d: failed to get cci device\n", + cpu); } info->cpu_clk = clk_get(cpu_dev, "cpu"); - if (IS_ERR(info->cpu_clk)) { - ret = PTR_ERR(info->cpu_clk); - return dev_err_probe(cpu_dev, ret, + if (IS_ERR(info->cpu_clk)) + return dev_err_probe(cpu_dev, PTR_ERR(info->cpu_clk), "cpu%d: failed to get cpu clk\n", cpu); - } info->inter_clk = clk_get(cpu_dev, "intermediate"); if (IS_ERR(info->inter_clk)) { @@ -431,7 +426,7 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu) ret = regulator_enable(info->proc_reg); if (ret) { - dev_warn(cpu_dev, "cpu%d: failed to enable vproc\n", cpu); + dev_err_probe(cpu_dev, ret, "cpu%d: failed to enable vproc\n", cpu); goto out_free_proc_reg; } @@ -439,14 +434,17 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu) info->sram_reg = regulator_get_optional(cpu_dev, "sram"); if (IS_ERR(info->sram_reg)) { ret = PTR_ERR(info->sram_reg); - if (ret == -EPROBE_DEFER) + if (ret == -EPROBE_DEFER) { + dev_err_probe(cpu_dev, ret, + "cpu%d: Failed to get sram regulator\n", cpu); goto out_disable_proc_reg; + } info->sram_reg = NULL; } else { ret = regulator_enable(info->sram_reg); if (ret) { - dev_warn(cpu_dev, "cpu%d: failed to enable vsram\n", cpu); + dev_err_probe(cpu_dev, ret, "cpu%d: failed to enable vsram\n", cpu); goto out_free_sram_reg; } } @@ -454,31 +452,34 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu) /* Get OPP-sharing information from "operating-points-v2" bindings */ ret = dev_pm_opp_of_get_sharing_cpus(cpu_dev, &info->cpus); if (ret) { - dev_err(cpu_dev, + dev_err_probe(cpu_dev, ret, "cpu%d: failed to get OPP-sharing information\n", cpu); goto out_disable_sram_reg; } ret = dev_pm_opp_of_cpumask_add_table(&info->cpus); if (ret) { - dev_warn(cpu_dev, "cpu%d: no OPP table\n", cpu); + dev_err_probe(cpu_dev, ret, "cpu%d: no OPP table\n", cpu); goto out_disable_sram_reg; } ret = clk_prepare_enable(info->cpu_clk); - if (ret) + if (ret) { + dev_err_probe(cpu_dev, ret, "cpu%d: failed to enable cpu clk\n", cpu); goto out_free_opp_table; + } ret = clk_prepare_enable(info->inter_clk); - if (ret) + if (ret) { + dev_err_probe(cpu_dev, ret, "cpu%d: failed to enable inter clk\n", cpu); goto out_disable_mux_clock; + } if (info->soc_data->ccifreq_supported) { info->vproc_on_boot = regulator_get_voltage(info->proc_reg); if (info->vproc_on_boot < 0) { ret = info->vproc_on_boot; - dev_err(info->cpu_dev, - "invalid Vproc value: %d\n", info->vproc_on_boot); + dev_err_probe(info->cpu_dev, ret, "invalid Vproc value\n"); goto out_disable_inter_clock; } } @@ -487,7 +488,7 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu) rate = clk_get_rate(info->inter_clk); opp = dev_pm_opp_find_freq_ceil(cpu_dev, &rate); if (IS_ERR(opp)) { - dev_err(cpu_dev, "cpu%d: failed to get intermediate opp\n", cpu); + dev_err_probe(cpu_dev, ret, "cpu%d: failed to get intermediate opp\n", cpu); ret = PTR_ERR(opp); goto out_disable_inter_clock; } @@ -501,7 +502,7 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu) info->opp_nb.notifier_call = mtk_cpufreq_opp_notifier; ret = dev_pm_opp_register_notifier(cpu_dev, &info->opp_nb); if (ret) { - dev_err(cpu_dev, "cpu%d: failed to register opp notifier\n", cpu); + dev_err_probe(cpu_dev, ret, "cpu%d: failed to register opp notifier\n", cpu); goto out_disable_inter_clock; } @@ -629,11 +630,9 @@ static int mtk_cpufreq_probe(struct platform_device *pdev) int cpu, ret; data = dev_get_platdata(&pdev->dev); - if (!data) { - dev_err(&pdev->dev, - "failed to get mtk cpufreq platform data\n"); - return -ENODEV; - } + if (!data) + return dev_err_probe(&pdev->dev, -ENODEV, + "failed to get mtk cpufreq platform data\n"); for_each_possible_cpu(cpu) { info = mtk_cpu_dvfs_info_lookup(cpu); @@ -643,24 +642,21 @@ static int mtk_cpufreq_probe(struct platform_device *pdev) info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); if (!info) { ret = -ENOMEM; + dev_err_probe(&pdev->dev, ret, "Failed to allocate dvfs_info\n"); goto release_dvfs_info_list; } info->soc_data = data; ret = mtk_cpu_dvfs_info_init(info, cpu); - if (ret) { - dev_err(&pdev->dev, - "failed to initialize dvfs info for cpu%d\n", - cpu); + if (ret) goto release_dvfs_info_list; - } list_add(&info->list_head, &dvfs_info_list); } ret = cpufreq_register_driver(&mtk_cpufreq_driver); if (ret) { - dev_err(&pdev->dev, "failed to register mtk cpufreq driver\n"); + dev_err_probe(&pdev->dev, ret, "failed to register mtk cpufreq driver\n"); goto release_dvfs_info_list; }