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 Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (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 CFF30C433F5 for ; Mon, 14 Feb 2022 06:09:17 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id 73FAD4019E; Mon, 14 Feb 2022 06:09:17 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id n8Nm89I5u0Xw; Mon, 14 Feb 2022 06:09:16 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp2.osuosl.org (Postfix) with ESMTPS id E82D540106; Mon, 14 Feb 2022 06:09:15 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id C1D19C0011; Mon, 14 Feb 2022 06:09:15 +0000 (UTC) Received: from smtp3.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by lists.linuxfoundation.org (Postfix) with ESMTP id C7551C000B for ; Mon, 14 Feb 2022 06:09:14 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id B611C60C09 for ; Mon, 14 Feb 2022 06:09:14 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id fCbScIZ0aMqH for ; Mon, 14 Feb 2022 06:09:13 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by smtp3.osuosl.org (Postfix) with ESMTPS id 8359A60C1B for ; Mon, 14 Feb 2022 06:09:13 +0000 (UTC) X-UUID: a3ec6c2d8e3f4609a6f077380016b41c-20220214 X-UUID: a3ec6c2d8e3f4609a6f077380016b41c-20220214 Received: from mtkmbs10n1.mediatek.inc [(172.21.101.34)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1045061193; Mon, 14 Feb 2022 14:09:05 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.15; Mon, 14 Feb 2022 14:09:03 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Mon, 14 Feb 2022 14:09:01 +0800 To: Greg Kroah-Hartman , David Airlie , Daniel Vetter , Subject: [PATCH 01/23] component: Add common helper for compare/release functions Date: Mon, 14 Feb 2022 14:07:57 +0800 Message-ID: <20220214060819.7334-2-yong.wu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220214060819.7334-1-yong.wu@mediatek.com> References: <20220214060819.7334-1-yong.wu@mediatek.com> MIME-Version: 1.0 X-MTK: N Cc: "Rafael J. Wysocki" , Liviu Dudau , linux-kernel@vger.kernel.org, Srinivas Kandagatla , Laurent Pinchart , Will Deacon , Krzysztof Kozlowski , James Wang , Chun-Kuang Hu , Arnd Bergmann , linux-mediatek@lists.infradead.org, Hsin-Yi Wang , Matthias Brugger , linux-arm-kernel@lists.infradead.org, AngeloGioacchino Del Regno , srv_heupstream@mediatek.com, Stephen Boyd , Sebastian Reichel , iommu@lists.linux-foundation.org, Robin Murphy X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Yong Wu via iommu Reply-To: Yong Wu Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" The component requires the compare/release functions, there are so many copies in current kernel. Just define four common helpers for them. Cc: Greg Kroah-Hartman Cc: "Rafael J. Wysocki" Signed-off-by: Yong Wu --- I have run "make htmldocs". Due to my poor english, If the grammer is wrong or need more comments, please help to correct or supplement. Thanks. --- drivers/base/component.c | 58 +++++++++++++++++++++++++++++++++++++++ include/linux/component.h | 6 ++++ 2 files changed, 64 insertions(+) diff --git a/drivers/base/component.c b/drivers/base/component.c index 2d25a6416587..3d72d2820d7d 100644 --- a/drivers/base/component.c +++ b/drivers/base/component.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include @@ -287,6 +288,63 @@ static void take_down_master(struct master *master) } } +/** + * component_compare_of - A common component compare function for of_node + * @dev: component device + * @data: @compare_data from component_match_add_release() + * + * A common compare function when compare_data is device of_node. e.g. + * component_match_add_release(masterdev, &match, component_release_of, + * component_compare_of, component_dev_of_node) + */ +int component_compare_of(struct device *dev, void *data) +{ + return device_match_of_node(dev, data); +} +EXPORT_SYMBOL_GPL(component_compare_of); + +/** + * component_release_of - A common component release function for of_node + * @dev: component device + * @data: @compare_data from component_match_add_release() + * + * About the example, Please see component_compare_of(). + */ +void component_release_of(struct device *dev, void *data) +{ + of_node_put(data); +} +EXPORT_SYMBOL_GPL(component_release_of); + +/** + * component_compare_dev - A common component compare function for dev + * @dev: component device + * @data: @compare_data from component_match_add_release() + * + * A common compare function when compare_data is struce device. e.g. + * component_match_add(masterdev, &match, component_compare_dev, component_dev) + */ +int component_compare_dev(struct device *dev, void *data) +{ + return dev == data; +} +EXPORT_SYMBOL_GPL(component_compare_dev); + +/** + * component_compare_dev_name - A common component compare function for device name + * @dev: component device + * @data: @compare_data from component_match_add_release() + * + * A common compare function when compare_data is device name string. e.g. + * component_match_add(masterdev, &match, component_compare_dev_name, + * "component_dev_name") + */ +int component_compare_dev_name(struct device *dev, void *data) +{ + return device_match_name(dev, data); +} +EXPORT_SYMBOL_GPL(component_compare_dev_name); + static void devm_component_match_release(struct device *parent, void *res) { struct component_match *match = res; diff --git a/include/linux/component.h b/include/linux/component.h index 16de18f473d7..6bc1c6e7f76d 100644 --- a/include/linux/component.h +++ b/include/linux/component.h @@ -82,6 +82,12 @@ struct component_master_ops { void (*unbind)(struct device *master); }; +/* A set helper functions for component compare/release */ +int component_compare_of(struct device *dev, void *data); +void component_release_of(struct device *dev, void *data); +int component_compare_dev(struct device *dev, void *data); +int component_compare_dev_name(struct device *dev, void *data); + void component_master_del(struct device *, const struct component_master_ops *); -- 2.18.0 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu