From patchwork Mon May 9 23:32:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 12844320 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 BEED6C433EF for ; Mon, 9 May 2022 23:39:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233466AbiEIXnY (ORCPT ); Mon, 9 May 2022 19:43:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45566 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233558AbiEIXlU (ORCPT ); Mon, 9 May 2022 19:41:20 -0400 Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [46.235.227.227]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 48E6A262658; Mon, 9 May 2022 16:34:53 -0700 (PDT) Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: dmitry.osipenko) with ESMTPSA id 3F0BE1F44239 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1652139289; bh=pGHmFEEjaXj2663JV2ZbLu8gGj/vTytf7TAeEENRqwc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=j6TdMpmPOCtsPovulFCfAQHz4uF7UDkPzJj/3CmgFYBImRy8M4O8YGcz4W706uWok oiILXGafhBbX7n+gHJn6RXTuMBUQC8tJ+EhQAGsuO/iXIERVRLzkR/44dQES7yRA6/ FtuuqnjfOGSov1+k3mURGR/0OqutTfvEFLoWalI2/ND2VETgVusAQFBX2DfNOA/g7I j0l9XZgvP22CfJfFfA6ZxZIqFh1T34qNRlUcm5bkUIByJGzf9sEM5G0d3YHcPWZak3 l8eX2DCnZSObZ31khwPUziOiMTJxqBOzynYhlqeRkrRRR5tLIOpk/iZhwBgqc0RGs9 Toz7YL4ixFXdA== From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , Russell King , Catalin Marinas , Will Deacon , Guo Ren , Geert Uytterhoeven , Greg Ungerer , Joshua Thompson , Thomas Bogendoerfer , Sebastian Reichel , Linus Walleij , Philipp Zabel , Greentime Hu , Vincent Chen , "James E.J. Bottomley" , Helge Deller , Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , Paul Walmsley , Palmer Dabbelt , Albert Ou , Yoshinori Sato , Rich Felker , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Boris Ostrovsky , Juergen Gross , Stefano Stabellini , "Rafael J. Wysocki" , Len Brown , Santosh Shilimkar , Krzysztof Kozlowski , Liam Girdwood , Mark Brown , Pavel Machek , Lee Jones , Andrew Morton , Guenter Roeck , Daniel Lezcano , Andy Shevchenko , Ulf Hansson , =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= Cc: linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-sh@vger.kernel.org, xen-devel@lists.xenproject.org, linux-acpi@vger.kernel.org, linux-pm@vger.kernel.org, linux-tegra@vger.kernel.org Subject: [PATCH v8 27/27] kernel/reboot: Add devm_register_restart_handler() Date: Tue, 10 May 2022 02:32:35 +0300 Message-Id: <20220509233235.995021-28-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220509233235.995021-1-dmitry.osipenko@collabora.com> References: <20220509233235.995021-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org Add devm_register_restart_handler() helper that registers sys-off handler using restart mode and with a default priority. Most drivers will want to register restart handler with a default priority, so this helper will reduce the boilerplate code and make code easier to read and follow. Signed-off-by: Dmitry Osipenko --- include/linux/reboot.h | 4 ++++ kernel/reboot.c | 22 ++++++++++++++++++++++ 2 files changed, 26 insertions(+) diff --git a/include/linux/reboot.h b/include/linux/reboot.h index 7c6e1f308f7c..e5d9ef886179 100644 --- a/include/linux/reboot.h +++ b/include/linux/reboot.h @@ -145,6 +145,10 @@ int devm_register_power_off_handler(struct device *dev, int (*callback)(struct sys_off_data *data), void *cb_data); +int devm_register_restart_handler(struct device *dev, + int (*callback)(struct sys_off_data *data), + void *cb_data); + int register_platform_power_off(void (*power_off)(void)); void unregister_platform_power_off(void (*power_off)(void)); diff --git a/kernel/reboot.c b/kernel/reboot.c index b790025154ac..2e78bd754a75 100644 --- a/kernel/reboot.c +++ b/kernel/reboot.c @@ -484,6 +484,28 @@ int devm_register_power_off_handler(struct device *dev, } EXPORT_SYMBOL_GPL(devm_register_power_off_handler); +/** + * devm_register_restart_handler - Register restart handler + * @dev: Device that registers callback + * @callback: Callback function + * @cb_data: Callback's argument + * + * Registers resource-managed sys-off handler with a default priority + * and using restart mode. + * + * Returns zero on success, or error code on failure. + */ +int devm_register_restart_handler(struct device *dev, + int (*callback)(struct sys_off_data *data), + void *cb_data) +{ + return devm_register_sys_off_handler(dev, + SYS_OFF_MODE_RESTART, + SYS_OFF_PRIO_DEFAULT, + callback, cb_data); +} +EXPORT_SYMBOL_GPL(devm_register_restart_handler); + static struct sys_off_handler *platform_power_off_handler; static int platform_power_off_notify(struct sys_off_data *data)