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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 23B6FC4332F for ; Thu, 7 Oct 2021 06:04:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1094961175 for ; Thu, 7 Oct 2021 06:04:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240184AbhJGGGQ (ORCPT ); Thu, 7 Oct 2021 02:06:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52582 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240212AbhJGGGP (ORCPT ); Thu, 7 Oct 2021 02:06:15 -0400 Received: from mail-qv1-xf2d.google.com (mail-qv1-xf2d.google.com [IPv6:2607:f8b0:4864:20::f2d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0BAC0C061762; Wed, 6 Oct 2021 23:04:22 -0700 (PDT) Received: by mail-qv1-xf2d.google.com with SMTP id 11so3480207qvd.11; Wed, 06 Oct 2021 23:04:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=HNsfnJd+5kS80akoo8bxdjzrR4smQrHB5wW716HCL/U=; b=AwOVSu2KnBDEnKj72Rjg6LT4qZmGDufDaNvanRPXjPrzNg3mnZQ5AXJiX3aM+zooz/ F99klJJW86reoPrtbAJqYt5LNXyccKYO0lrp4GMUCK5ebSFdnrIOD2ENAjfzss5EYWaD d94IG5xE7H5LQvyAwZFqavldd105j33Qk3DHXE+Knm1H0yt1/CMlxfUlVgfcNnu9FdST foBffZwR0/wAHaYNQQH2OOYp4ohqkrsEh6OBWb+xIO2gdkstOH75yLJWhHwGi6qVQxrR B4as6RSYhPFyQ4EcIGvKSuj1rgAnRAo5V2x6bhrU6ByhlKAa7r4Q3+Ov9ETtfzYXC+p5 UR1w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=HNsfnJd+5kS80akoo8bxdjzrR4smQrHB5wW716HCL/U=; b=4uRQlotWiKY06XzJs+1vBm/zHlfQSbWhdIty7a31zB33BJd7NGg/K4l8Obj/Zv4gA0 I0R4s0q0UzwHnVBKXYSUGTym0vRCUfSM69sgOGwyIDCL+pIQNuB8yVLD33p7UjlwKD74 MtpPTW59mYZz2jQiplYjiMVjXxEmjvAC59fSs8Nl2sXTGENba8FWxEczi0kJjlWlelfu 0k1KtTu2AiJomlGbvMnNR4ni8GbSwilB7+6Dm9lsrtnh+m/iy1+bTv75wTOy7Bs4nxPE 0Vc/QbSI9sA6KbYewUzYpUOarQJA7dR6p+qKcsBx5ES3VPtF97fXl1VSsFM96ZNU82DS 46xw== X-Gm-Message-State: AOAM530gYetroE5FnomtCki3R8y/geuPglGkfKTi4VfkpLa5j+M4BsZB tRr0RdHFKeW2mD8QN9K8vwk= X-Google-Smtp-Source: ABdhPJyoERJF+dBkQiPBDLcF0qOcjYVLRaaI9m+OEpsXDIQNfiZSg2J2U3RkUrNAd+vGD7XGTXM6jQ== X-Received: by 2002:a05:6214:1022:: with SMTP id k2mr2188082qvr.53.1633586661289; Wed, 06 Oct 2021 23:04:21 -0700 (PDT) Received: from localhost.localdomain (79-139-163-57.dynamic.spd-mgts.ru. [79.139.163.57]) by smtp.gmail.com with ESMTPSA id x79sm13235042qkb.65.2021.10.06.23.04.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 06 Oct 2021 23:04:20 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , Lee Jones , "Rafael J . Wysocki" , Mark Brown , Andrew Morton , Guenter Roeck , Russell King , Daniel Lezcano , Andy Shevchenko , Ulf Hansson Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org Subject: [PATCH v1 3/6] kernel: Add devm_register_restart_handler() Date: Thu, 7 Oct 2021 09:02:50 +0300 Message-Id: <20211007060253.17049-4-digetx@gmail.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20211007060253.17049-1-digetx@gmail.com> References: <20211007060253.17049-1-digetx@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org Add resource-managed variant of register_restart_handler(). Signed-off-by: Dmitry Osipenko --- include/linux/reboot.h | 2 ++ kernel/reboot.c | 27 +++++++++++++++++++++++++++ 2 files changed, 29 insertions(+) diff --git a/include/linux/reboot.h b/include/linux/reboot.h index f72fb8729608..fb17fad63e53 100644 --- a/include/linux/reboot.h +++ b/include/linux/reboot.h @@ -49,6 +49,8 @@ extern int register_restart_handler(struct notifier_block *); extern int unregister_restart_handler(struct notifier_block *); extern void do_kernel_restart(char *cmd); +extern int devm_register_restart_handler(struct device *, struct notifier_block *); + extern int register_poweroff_handler(struct notifier_block *); extern int unregister_poweroff_handler(struct notifier_block *); diff --git a/kernel/reboot.c b/kernel/reboot.c index 6e90afec2bb8..b611e49a5ac6 100644 --- a/kernel/reboot.c +++ b/kernel/reboot.c @@ -200,6 +200,33 @@ int unregister_restart_handler(struct notifier_block *nb) } EXPORT_SYMBOL(unregister_restart_handler); +static void devm_unregister_restart_handler(struct device *dev, void *res) +{ + WARN_ON(unregister_restart_handler(*(struct notifier_block **)res)); +} + +int devm_register_restart_handler(struct device *dev, struct notifier_block *nb) +{ + struct notifier_block **rcnb; + int ret; + + rcnb = devres_alloc(devm_unregister_restart_handler, + sizeof(*rcnb), GFP_KERNEL); + if (!rcnb) + return -ENOMEM; + + ret = register_restart_handler(nb); + if (!ret) { + *rcnb = nb; + devres_add(dev, rcnb); + } else { + devres_free(rcnb); + } + + return ret; +} +EXPORT_SYMBOL(devm_register_restart_handler); + /** * do_kernel_restart - Execute kernel restart handler call chain * -- 2.32.0