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dmarc=none action=none header.from=nxp.com; Received: from VI1PR04MB3983.eurprd04.prod.outlook.com (2603:10a6:803:4c::16) by VI1PR0402MB2879.eurprd04.prod.outlook.com (2603:10a6:800:b7::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3611.23; Thu, 3 Dec 2020 03:14:37 +0000 Received: from VI1PR04MB3983.eurprd04.prod.outlook.com ([fe80::dcb7:6117:3def:2685]) by VI1PR04MB3983.eurprd04.prod.outlook.com ([fe80::dcb7:6117:3def:2685%7]) with mapi id 15.20.3611.025; Thu, 3 Dec 2020 03:14:37 +0000 From: Liu Ying To: linux-arm-kernel@lists.infradead.org, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 4/6] drm/atomic: Avoid unused-but-set-variable warning on for_each_old_plane_in_state Date: Thu, 3 Dec 2020 11:06:29 +0800 Message-Id: <1606964791-24927-5-git-send-email-victor.liu@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1606964791-24927-1-git-send-email-victor.liu@nxp.com> References: <1606964791-24927-1-git-send-email-victor.liu@nxp.com> X-Originating-IP: [119.31.174.66] X-ClientProxiedBy: SG2PR02CA0028.apcprd02.prod.outlook.com (2603:1096:3:18::16) To VI1PR04MB3983.eurprd04.prod.outlook.com (2603:10a6:803:4c::16) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (119.31.174.66) by SG2PR02CA0028.apcprd02.prod.outlook.com (2603:1096:3:18::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.20.3632.17 via Frontend Transport; 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The precedent has already been set by other macros in the same file. Signed-off-by: Liu Ying --- v1->v2: * No change. include/drm/drm_atomic.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h index 54e051a..9da1e35a3 100644 --- a/include/drm/drm_atomic.h +++ b/include/drm/drm_atomic.h @@ -888,7 +888,9 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p); (__i)++) \ for_each_if ((__state)->planes[__i].ptr && \ ((plane) = (__state)->planes[__i].ptr, \ - (old_plane_state) = (__state)->planes[__i].old_state, 1)) + (void)(plane) /* Only to avoid unused-but-set-variable warning */, \ + (old_plane_state) = (__state)->planes[__i].old_state, \ + (void)(old_plane_state) /* Only to avoid unused-but-set-variable warning */, 1)) /** * for_each_new_plane_in_state - iterate over all planes in an atomic update * @__state: &struct drm_atomic_state pointer