From patchwork Mon Feb 29 09:19:07 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 102652 Delivered-To: patch@linaro.org Received: by 10.112.199.169 with SMTP id jl9csp1124870lbc; Mon, 29 Feb 2016 01:20:34 -0800 (PST) X-Received: by 10.66.225.177 with SMTP id rl17mr20583852pac.46.1456737634041; Mon, 29 Feb 2016 01:20:34 -0800 (PST) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id q66si41786546pfi.84.2016.02.29.01.20.33; Mon, 29 Feb 2016 01:20:34 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753175AbcB2JU2 (ORCPT + 30 others); Mon, 29 Feb 2016 04:20:28 -0500 Received: from mout.kundenserver.de ([217.72.192.73]:61475 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752644AbcB2JUS (ORCPT ); Mon, 29 Feb 2016 04:20:18 -0500 Received: from wuerfel.lan. ([78.42.132.4]) by mrelayeu.kundenserver.de (mreue104) with ESMTPA (Nemesis) id 0MPXo9-1aWDFN3IrB-004gMV; Mon, 29 Feb 2016 10:19:24 +0100 From: Arnd Bergmann To: Joerg Roedel , Joerg Roedel Cc: linux-arm-kernel@lists.infradead.org, Yong Wu , Robin Murphy , iommu@lists.linux-foundation.org, linux-mediatek@lists.infradead.org, Matthias Brugger , Arnd Bergmann , linux-kernel@vger.kernel.org Subject: [PATCH 2/2] iommu/mediatek: mark PM functions as __maybe_unused Date: Mon, 29 Feb 2016 10:19:07 +0100 Message-Id: <1456737553-496245-2-git-send-email-arnd@arndb.de> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1456737553-496245-1-git-send-email-arnd@arndb.de> References: <1456737553-496245-1-git-send-email-arnd@arndb.de> X-Provags-ID: V03:K0:KxJr9Xqej3/krgk894TxnBWETg3PG6lTPFXu314Hkx0AmEw021+ hyGP8Dw+yjHyCS1LnII7j4BeatA9HdxvPEttdB0aRj5ZffksVppEFAWS37GDvRSgXhuVyJ9 b0UKop+mf4CRKFeu4prCw8FrUjJ2nXpH/it3LPsQ2rCQ83igWzvujhmBb6YvfZLSsx9H1Wi xBfI2l79eeFOL8TXVMDFA== X-UI-Out-Filterresults: notjunk:1; V01:K0:6N7GjljZe08=:JaqGQ2ZKQXHjIRBYVyLxt4 nhirHEZ4JTOjSRUCtm57yqZXoSZQdRi9hxhhbkFlTVJf3FcHNHwAvf3LNhYvGR30Y22Y289mX iSvb2tWIFBhBHwt12Lnk3p53XuiK/4N31atYA9YvAw13Ty8sFLgqw/iHJ5EmeBxG8irsVCpsF YRy2g0WtJYIMljV4eOhW2UWOppVL1Ba1ThMwL24yt4JfEC/tSA7wUa7bImLTpx1p6igj/i2GY Er7aOE5HwZITZZ/p8vCq8X1w+b+te6qkOcwu1uah/QT60U6zTtGgsG81MhVqAfEr5mxstCEor WUlCPb12b/hKBKS0Nnd897BnJTD0yORvEd6ifpVay6RWSg/ajLY8cdliTcl0SR4r+25EI9GLp C8ixm6BY2gpDcA2C5IomcC8Sq/wDhZm9gLxJg9wFDaRwNTCDBqCgfuS5h7qv54I51Lx9hRMS5 wbC5BPT/LdKEhSknmwMlHUPLLiIn2quO5vDfrJgaDkIODM1QaomcZDzcjh30eYoBHTNLd95Sh kfVO7XQKx93x2ou5QNg3M6w58an+StU2C6zZd829/AXv6b6DIlTeTV/GlEM9xDTn/jvdVcG3M NxagpJ3EQQ1SkB/+PItGpQD6aA8IvcPbK7tsWplGBVYbdBoM+P+o9PIBpSSA8h2hjdFM5iHPB vKhzqw4CRnBmhn3L65tbJdLcDMF6bibKX8qeKbQyQR9S2byyIjbJ46ycK6MsdTjRfWLQ= Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When CONFIG_PM is unset, we get a harmless warning for this driver: drivers/iommu/mtk_iommu.c:665:12: error: 'mtk_iommu_suspend' defined but not used [-Werror=unused-function] drivers/iommu/mtk_iommu.c:680:12: error: 'mtk_iommu_resume' defined but not used [-Werror=unused-function] Marking the functions as __maybe_unused gits rid of the two functions and lets the compiler silently drop the object code, while still doing syntax checking on them for build-time verification. Signed-off-by: Arnd Bergmann Fixes: 0df4fabe208d ("iommu/mediatek: Add mt8173 IOMMU driver") --- drivers/iommu/mtk_iommu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) -- 2.7.0 diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index 721ffdb296d6..f3c160e4c25d 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -662,7 +662,7 @@ static int mtk_iommu_remove(struct platform_device *pdev) return 0; } -static int mtk_iommu_suspend(struct device *dev) +static int __maybe_unused mtk_iommu_suspend(struct device *dev) { struct mtk_iommu_data *data = dev_get_drvdata(dev); struct mtk_iommu_suspend_reg *reg = &data->reg; @@ -677,7 +677,7 @@ static int mtk_iommu_suspend(struct device *dev) return 0; } -static int mtk_iommu_resume(struct device *dev) +static int __maybe_unused mtk_iommu_resume(struct device *dev) { struct mtk_iommu_data *data = dev_get_drvdata(dev); struct mtk_iommu_suspend_reg *reg = &data->reg;