From nobody Wed Dec 17 10:02:35 2025 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 8F005CDB465 for ; Mon, 16 Oct 2023 17:06:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234023AbjJPRF6 (ORCPT ); Mon, 16 Oct 2023 13:05:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41224 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234539AbjJPRFW (ORCPT ); Mon, 16 Oct 2023 13:05:22 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.115]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 190AC3254; Mon, 16 Oct 2023 10:01:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1697475714; x=1729011714; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=m3Z4WGrXG69PQDGxjpaL1h4E+zMeZMVLbMui312R5WQ=; b=KRnbaxOnN40z6z0rjnshn6txvvuUoOsvXmrBFc+TiWkKHuJhT34Issf3 bYSW+6uD/O79Nn3swsKM3ARdl42IiaHxPim4UBoTaQxHeULBiJs6FGIGr 6tkC5Omg2BQQqvrOUVMiPRRqRn8mo6qCB8IJs0XFcPcjssPxbxBjrCZgq eHVcpXmX2xNrAnH1yNCURX84OnBXRrJiuxblXm5soP+mQfqCdA3YFdWaN rd+ekVtdnnZ+fHhK7QKTbOQkEr2IQ13Vm6vnzGtTaCle5dhiYCT+4Mpsn mHXxbzjihOF+uaoqh+DDMg+wkfkTXKKCpeRcws0hILtD/HD+tQ+ccYP0J g==; X-IronPort-AV: E=McAfee;i="6600,9927,10865"; a="385427260" X-IronPort-AV: E=Sophos;i="6.03,229,1694761200"; d="scan'208";a="385427260" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Oct 2023 10:01:40 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10865"; a="1087133904" X-IronPort-AV: E=Sophos;i="6.03,229,1694761200"; d="scan'208";a="1087133904" Received: from powerlab.fi.intel.com ([10.237.71.25]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Oct 2023 10:01:38 -0700 From: Michal Wilczynski To: linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org Cc: rafael.j.wysocki@intel.com, andriy.shevchenko@linux.intel.com, lenb@kernel.org, Michal Wilczynski , Andy Shevchenko Subject: [PATCH v1 2/3] ACPI: acpi_pad: Use dev groups for sysfs Date: Mon, 16 Oct 2023 20:01:24 +0300 Message-ID: <20231016170125.576159-3-michal.wilczynski@intel.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231016170125.576159-1-michal.wilczynski@intel.com> References: <20231016170125.576159-1-michal.wilczynski@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Change the way sysfs files are created. Use dev_groups, as it's a better approach - it allows to declare attributes, and the core code would take care of the lifecycle of those objects. Suggested-by: Andy Shevchenko Signed-off-by: Michal Wilczynski --- drivers/acpi/acpi_pad.c | 42 +++++++++-------------------------------- 1 file changed, 9 insertions(+), 33 deletions(-) diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c index 36e1049833a3..2513028a0299 100644 --- a/drivers/acpi/acpi_pad.c +++ b/drivers/acpi/acpi_pad.c @@ -337,33 +337,14 @@ static ssize_t idlecpus_show(struct device *dev, =20 static DEVICE_ATTR_RW(idlecpus); =20 -static int acpi_pad_add_sysfs(struct acpi_device *device) -{ - int result; - - result =3D device_create_file(&device->dev, &dev_attr_idlecpus); - if (result) - return -ENODEV; - result =3D device_create_file(&device->dev, &dev_attr_idlepct); - if (result) { - device_remove_file(&device->dev, &dev_attr_idlecpus); - return -ENODEV; - } - result =3D device_create_file(&device->dev, &dev_attr_rrtime); - if (result) { - device_remove_file(&device->dev, &dev_attr_idlecpus); - device_remove_file(&device->dev, &dev_attr_idlepct); - return -ENODEV; - } - return 0; -} +static struct attribute *acpi_pad_attrs[] =3D { + &dev_attr_idlecpus.attr, + &dev_attr_idlepct.attr, + &dev_attr_rrtime.attr, + NULL +}; =20 -static void acpi_pad_remove_sysfs(struct acpi_device *device) -{ - device_remove_file(&device->dev, &dev_attr_idlecpus); - device_remove_file(&device->dev, &dev_attr_idlepct); - device_remove_file(&device->dev, &dev_attr_rrtime); -} +ATTRIBUTE_GROUPS(acpi_pad); =20 /* * Query firmware how many CPUs should be idle @@ -440,17 +421,12 @@ static int acpi_pad_probe(struct platform_device *pde= v) strcpy(acpi_device_name(device), ACPI_PROCESSOR_AGGREGATOR_DEVICE_NAME); strcpy(acpi_device_class(device), ACPI_PROCESSOR_AGGREGATOR_CLASS); =20 - if (acpi_pad_add_sysfs(device)) - return -ENODEV; - status =3D acpi_install_notify_handler(device->handle, ACPI_DEVICE_NOTIFY, acpi_pad_notify, dev); - if (ACPI_FAILURE(status)) { - acpi_pad_remove_sysfs(device); + if (ACPI_FAILURE(status)) return -ENODEV; - } =20 return 0; } @@ -466,7 +442,6 @@ static void acpi_pad_remove(struct platform_device *pde= v) acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY, acpi_pad_notify); - acpi_pad_remove_sysfs(device); } =20 static const struct acpi_device_id pad_device_ids[] =3D { @@ -479,6 +454,7 @@ static struct platform_driver acpi_pad_driver =3D { .probe =3D acpi_pad_probe, .remove_new =3D acpi_pad_remove, .driver =3D { + .dev_groups =3D acpi_pad_groups, .name =3D "processor_aggregator", .acpi_match_table =3D pad_device_ids, }, --=20 2.41.0