From patchwork Thu Apr 8 20:58:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Masahiro Yamada X-Patchwork-Id: 418506 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-17.0 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 99D3EC433ED for ; Thu, 8 Apr 2021 21:01:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 78CEF61181 for ; Thu, 8 Apr 2021 21:01:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232425AbhDHVCD (ORCPT ); Thu, 8 Apr 2021 17:02:03 -0400 Received: from condef-02.nifty.com ([202.248.20.67]:36740 "EHLO condef-02.nifty.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232345AbhDHVCC (ORCPT ); Thu, 8 Apr 2021 17:02:02 -0400 Received: from conuserg-09.nifty.com ([10.126.8.72])by condef-02.nifty.com with ESMTP id 138KxvMA004966; Fri, 9 Apr 2021 05:59:57 +0900 Received: from localhost.localdomain (133-32-232-101.west.xps.vectant.ne.jp [133.32.232.101]) (authenticated) by conuserg-09.nifty.com with ESMTP id 138Kx471002644; Fri, 9 Apr 2021 05:59:06 +0900 DKIM-Filter: OpenDKIM Filter v2.10.3 conuserg-09.nifty.com 138Kx471002644 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.com; s=dec2015msa; t=1617915546; bh=piA+8z078kwb/KfPJ/8L0g75CBWXThZTe0VPYso6g/U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=E65GbUOUKULlL/mKzA0AVQ65w88zN1o5uif53wxAmxGkhdZqItC49y4rWkJOjItNJ tLVX6tAyd6DCAdOQi4Q9iODqSvyhaZpq1G3MGyCAqWx9BS7IxNeVuPI52RwF/I1mKM +0V0UVCeASxlppgX6piANkaMLhn4EPqvs4OyKv+2eE8tUq2MLgR84FxMdKuVYsh+fS OocOwD5+NGyVq5Oz29d3cGRt56StEw9e0mB4RldDJE5kU0GuJmHDbWYmjsMzuVJPyR WcNIsANqTZ2NaqQ7xrAM3Z36qfPcbMNMYisubExgEllrLizap3fossetR+MCScZVMA MLPM5V2rgSV5g== X-Nifty-SrcIP: [133.32.232.101] From: Masahiro Yamada To: linux-kbuild@vger.kernel.org Cc: linux-gpio@vger.kernel.org, Arnd Bergmann , Paul Cercueil , Masahiro Yamada , Len Brown , Pavel Machek , "Rafael J. Wysocki" , linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org Subject: [PATCH 2/2] pm: allow drivers to drop #ifdef and __maybe_unused from pm callbacks Date: Fri, 9 Apr 2021 05:58:58 +0900 Message-Id: <20210408205858.51751-3-masahiroy@kernel.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210408205858.51751-1-masahiroy@kernel.org> References: <20210408205858.51751-1-masahiroy@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Drivers typically surround suspend and resume callbacks with #ifdef CONFIG_PM(_SLEEP) or mark them as __maybe_unused in order to avoid -Wunused-const-variable warnings. With this commit, drivers will be able to remove #ifdef CONFIG_PM(_SLEEP) and __maybe_unsed because unused functions are dropped by the compiler instead of the preprocessor. Signed-off-by: Masahiro Yamada --- include/linux/pm.h | 67 +++++++++++++++++----------------------------- 1 file changed, 24 insertions(+), 43 deletions(-) diff --git a/include/linux/pm.h b/include/linux/pm.h index 482313a8ccfc..ca764566692a 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -301,50 +301,37 @@ struct dev_pm_ops { int (*runtime_idle)(struct device *dev); }; -#ifdef CONFIG_PM_SLEEP +#define pm_ptr(_ptr) PTR_IF(IS_ENABLED(CONFIG_PM), _ptr) +#define pm_sleep_ptr(_ptr) PTR_IF(IS_ENABLED(CONFIG_PM_SLEEP), _ptr) + #define SET_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \ - .suspend = suspend_fn, \ - .resume = resume_fn, \ - .freeze = suspend_fn, \ - .thaw = resume_fn, \ - .poweroff = suspend_fn, \ - .restore = resume_fn, -#else -#define SET_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) -#endif + .suspend = pm_sleep_ptr(suspend_fn), \ + .resume = pm_sleep_ptr(resume_fn), \ + .freeze = pm_sleep_ptr(suspend_fn), \ + .thaw = pm_sleep_ptr(resume_fn), \ + .poweroff = pm_sleep_ptr(suspend_fn), \ + .restore = pm_sleep_ptr(resume_fn), -#ifdef CONFIG_PM_SLEEP #define SET_LATE_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \ - .suspend_late = suspend_fn, \ - .resume_early = resume_fn, \ - .freeze_late = suspend_fn, \ - .thaw_early = resume_fn, \ - .poweroff_late = suspend_fn, \ - .restore_early = resume_fn, -#else -#define SET_LATE_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) -#endif + .suspend_late = pm_sleep_ptr(suspend_fn), \ + .resume_early = pm_sleep_ptr(resume_fn), \ + .freeze_late = pm_sleep_ptr(suspend_fn), \ + .thaw_early = pm_sleep_ptr(resume_fn), \ + .poweroff_late = pm_sleep_ptr(suspend_fn), \ + .restore_early = pm_sleep_ptr(resume_fn), -#ifdef CONFIG_PM_SLEEP #define SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \ - .suspend_noirq = suspend_fn, \ - .resume_noirq = resume_fn, \ - .freeze_noirq = suspend_fn, \ - .thaw_noirq = resume_fn, \ - .poweroff_noirq = suspend_fn, \ - .restore_noirq = resume_fn, -#else -#define SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) -#endif + .suspend_noirq = pm_sleep_ptr(suspend_fn), \ + .resume_noirq = pm_sleep_ptr(resume_fn), \ + .freeze_noirq = pm_sleep_ptr(suspend_fn), \ + .thaw_noirq = pm_sleep_ptr(resume_fn), \ + .poweroff_noirq = pm_sleep_ptr(suspend_fn), \ + .restore_noirq = pm_sleep_ptr(resume_fn), -#ifdef CONFIG_PM #define SET_RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \ - .runtime_suspend = suspend_fn, \ - .runtime_resume = resume_fn, \ - .runtime_idle = idle_fn, -#else -#define SET_RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) -#endif + .runtime_suspend = pm_ptr(suspend_fn), \ + .runtime_resume = pm_ptr(resume_fn), \ + .runtime_idle = pm_ptr(idle_fn), /* * Use this if you want to use the same suspend and resume callbacks for suspend @@ -374,12 +361,6 @@ const struct dev_pm_ops __maybe_unused name = { \ SET_RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \ } -#ifdef CONFIG_PM -#define pm_ptr(_ptr) (_ptr) -#else -#define pm_ptr(_ptr) NULL -#endif - /* * PM_EVENT_ messages *