From patchwork Mon May 9 23:32:34 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 12844346 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 lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 671F5C433F5 for ; Mon, 9 May 2022 23:42:26 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.324944.547362 (Exim 4.92) (envelope-from ) id 1noD17-0001IW-Gu; Mon, 09 May 2022 23:42:17 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 324944.547362; Mon, 09 May 2022 23:42:17 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1noD17-0001IC-BU; Mon, 09 May 2022 23:42:17 +0000 Received: by outflank-mailman (input) for mailman id 324944; Mon, 09 May 2022 23:42:16 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1noCtq-0007bw-1k for xen-devel@lists.xenproject.org; Mon, 09 May 2022 23:34:46 +0000 Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [46.235.227.227]) by se1-gles-sth1.inumbo.com (Halon) with ESMTPS id 9ba55251-cff0-11ec-a406-831a346695d4; Tue, 10 May 2022 01:34:45 +0200 (CEST) Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: dmitry.osipenko) with ESMTPSA id 58F021F44236 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 9ba55251-cff0-11ec-a406-831a346695d4 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1652139285; bh=eYJEb1cGtJb7wgluz0Ogjp7ayyCB95M+pYV0qM2nZAA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gOPDp8rDBp4JqzhH2ZY5PDoY4HXZSGmIYDZVHq2wPZhnNa0ZEY8wHzDjSwJXSOy7G Jn3P0RpsPvdV1ccR1c7FYtekDBuMdIqHI/aiWT1xUalNbFQIYMAsQPzQQO8ErrDaIV kFrKBSZ34QZiDdDEnum/2k5lZYT4smZCS4dGksm9MkJP9yRifE3HhcgGF8QQaRxUHF 8OKJXTbYQqx54XKJP3i2UuHvKC5MKIza6raMDWqSj+SRWUPFaJv5JM9CKz9jAfGOsk BzabK5ee86xDicvVDuzYlfJK/71F5OymwPMUD0bsqwdZmlvXd7xuIOWT8u8Gpbk/9q 9o+MDWgOLAD0w== 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 26/27] kernel/reboot: Add devm_register_power_off_handler() Date: Tue, 10 May 2022 02:32:34 +0300 Message-Id: <20220509233235.995021-27-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 Add devm_register_power_off_handler() helper that registers sys-off handler using power-off mode and with a default priority. Most drivers will want to register power-off 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 f185b64faae0..7c6e1f308f7c 100644 --- a/include/linux/reboot.h +++ b/include/linux/reboot.h @@ -141,6 +141,10 @@ int devm_register_sys_off_handler(struct device *dev, int (*callback)(struct sys_off_data *data), void *cb_data); +int devm_register_power_off_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 66033e12e8eb..b790025154ac 100644 --- a/kernel/reboot.c +++ b/kernel/reboot.c @@ -462,6 +462,28 @@ int devm_register_sys_off_handler(struct device *dev, } EXPORT_SYMBOL_GPL(devm_register_sys_off_handler); +/** + * devm_register_power_off_handler - Register power-off 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 power-off mode. + * + * Returns zero on success, or error code on failure. + */ +int devm_register_power_off_handler(struct device *dev, + int (*callback)(struct sys_off_data *data), + void *cb_data) +{ + return devm_register_sys_off_handler(dev, + SYS_OFF_MODE_POWER_OFF, + SYS_OFF_PRIO_DEFAULT, + callback, cb_data); +} +EXPORT_SYMBOL_GPL(devm_register_power_off_handler); + static struct sys_off_handler *platform_power_off_handler; static int platform_power_off_notify(struct sys_off_data *data)