From patchwork Wed Apr 19 02:44:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhang Rui X-Patchwork-Id: 675530 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 89DC1C6FD18 for ; Wed, 19 Apr 2023 02:44:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231215AbjDSCoj (ORCPT ); Tue, 18 Apr 2023 22:44:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56912 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231538AbjDSCoi (ORCPT ); Tue, 18 Apr 2023 22:44:38 -0400 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 299826E8A; Tue, 18 Apr 2023 19:44:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1681872277; x=1713408277; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=uZwJ0c3//1MoH6bx9XUFeOpEKZ8dn5klZ0L1TOTZauI=; b=N1cm6iM9QodSkEEP20aiJ8dllO8kRUiObkAZBQg5AiThA15bKXo/GAKI 2vYfCFZrvd9RLjdHU60GuNp7JuLhuCqcFat8Jq/AhM//JdgGBEIcISdtn NnhfLFYKPpEtVwINWvMazlws8ZTK9s7pDEzf7hmzMWdZpRAH43f+r800s sjzsKFGRvPOtkG0fQMKTxP74DpuoWomXVM1xXb5Jl7CEwZCMzo09KRcKz SbzjF50o3xTQiOcqcx+Ogi96eH+I5UItw6cArPZi/H0psMpDvm9tvjinz YefYhNbrVTnrKHQFvrth4FYIdTGAzRmr9sr1Cm+k7wAGELoCKMVXX+KJZ g==; X-IronPort-AV: E=McAfee;i="6600,9927,10684"; a="373215278" X-IronPort-AV: E=Sophos;i="5.99,208,1677571200"; d="scan'208";a="373215278" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Apr 2023 19:44:37 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10684"; a="937478010" X-IronPort-AV: E=Sophos;i="5.99,208,1677571200"; d="scan'208";a="937478010" Received: from hanboyu-mobl.ccr.corp.intel.com (HELO rzhang1-DESK.intel.com) ([10.255.29.76]) by fmsmga006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Apr 2023 19:44:35 -0700 From: Zhang Rui To: linux-pm@vger.kernel.org, rafael.j.wysocki@intel.com, daniel.lezcano@linaro.org Cc: linux-kernel@vger.kernel.org, srinivas.pandruvada@intel.com Subject: [PATCH v2 02/15] powercap/intel_rapl: Allow probing without CPUID match Date: Wed, 19 Apr 2023 10:44:06 +0800 Message-Id: <20230419024419.324436-3-rui.zhang@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230419024419.324436-1-rui.zhang@intel.com> References: <20230419024419.324436-1-rui.zhang@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Currently, CPU model checks is used to 1. get proper rapl_defaults callbacks for RAPL MSR/MMIO Interface. 2. create a platform device node for the intel_rapl_msr driver to probe. Both of these are only mandatory for the RAPL MSR/MMIO Interface. Make the CPUID match optional. Signed-off-by: Zhang Rui Tested-by: Wang Wendy --- drivers/powercap/intel_rapl_common.c | 35 +++++++++++----------------- 1 file changed, 14 insertions(+), 21 deletions(-) diff --git a/drivers/powercap/intel_rapl_common.c b/drivers/powercap/intel_rapl_common.c index 8970c7b80884..2d2c15eea8eb 100644 --- a/drivers/powercap/intel_rapl_common.c +++ b/drivers/powercap/intel_rapl_common.c @@ -1528,32 +1528,25 @@ static int __init rapl_init(void) int ret; id = x86_match_cpu(rapl_ids); - if (!id) { - pr_err("driver does not support CPU family %d model %d\n", - boot_cpu_data.x86, boot_cpu_data.x86_model); + if (id) { + rapl_defaults = (struct rapl_defaults *)id->driver_data; - return -ENODEV; - } - - rapl_defaults = (struct rapl_defaults *)id->driver_data; - - ret = register_pm_notifier(&rapl_pm_notifier); - if (ret) - return ret; + rapl_msr_platdev = platform_device_alloc("intel_rapl_msr", 0); + if (!rapl_msr_platdev) + return -ENOMEM; - rapl_msr_platdev = platform_device_alloc("intel_rapl_msr", 0); - if (!rapl_msr_platdev) { - ret = -ENOMEM; - goto end; + ret = platform_device_add(rapl_msr_platdev); + if (ret) { + platform_device_put(rapl_msr_platdev); + return ret; + } } - ret = platform_device_add(rapl_msr_platdev); - if (ret) + ret = register_pm_notifier(&rapl_pm_notifier); + if (ret && rapl_msr_platdev) { + platform_device_del(rapl_msr_platdev); platform_device_put(rapl_msr_platdev); - -end: - if (ret) - unregister_pm_notifier(&rapl_pm_notifier); + } return ret; }