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Thu, 21 Jan 2021 07:25:28 +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 Cc: p.zabel@pengutronix.de, airlied@linux.ie, daniel@ffwll.ch, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, robh+dt@kernel.org, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, laurentiu.palcu@oss.nxp.com, guido.gunther@puri.sm Subject: [PATCH v6 4/6] drm/atomic: Avoid unused-but-set-variable warning on for_each_old_plane_in_state Date: Thu, 21 Jan 2021 15:14:21 +0800 Message-Id: <1611213263-7245-5-git-send-email-victor.liu@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1611213263-7245-1-git-send-email-victor.liu@nxp.com> References: <1611213263-7245-1-git-send-email-victor.liu@nxp.com> Content-Type: text/plain X-Originating-IP: [119.31.174.66] X-ClientProxiedBy: SG2PR06CA0123.apcprd06.prod.outlook.com (2603:1096:1:1d::25) 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 SG2PR06CA0123.apcprd06.prod.outlook.com (2603:1096:1:1d::25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.20.3784.12 via Frontend Transport; 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X-MS-Exchange-AntiSpam-MessageData: =?us-ascii?Q?bi9ygCOpYhx8m6rpEVCELbAv46mqPKdXTt7ePT+B6bPAiMIlQnjw9/V7kwn/?= =?us-ascii?Q?GRVvWSy19BkIsgu3a9C651j4mNVQitkr5R8UcdkG2oDcESjMRQNZPbfVG8Q1?= =?us-ascii?Q?vo+jAliBlYB2CMCTgI8n9IpFdhvgGdNSCkYxSisINfsFvQ2rL5XQ6T0jUI0A?= =?us-ascii?Q?LH8REkQd77wxR8Wq7VVOSWp3g1xUrgeIs/bM9PTDB7uc2i80HOQwthc0emZH?= =?us-ascii?Q?aj0YYRFElhxO9J6+WpJTbcDDDkBiKMwAgmoNDY2MqF/MqcnIc9jHwXlYtScz?= =?us-ascii?Q?vbz1PitCpZLf3m8BNM5lKSQrmKjcCOB698QCrKqna3J2xtqhT5A/A67lv3zm?= =?us-ascii?Q?zclO361Pg5Lchi1F1C3l3TO0t3PoFaS/uu/3M5ylJCrjBYKOvXMqLMK5qsw9?= =?us-ascii?Q?A23e44eR76jsFo7s5zRBiH8oKVSaxwFQlVbHzktjcGKkXBBLo125l9wCsMwV?= =?us-ascii?Q?hZM5NBLFxhUOYsTKetak/s5dfeIaWRfRZIkjSOdM0U3h8OCTy8MsOv0Ck8X/?= =?us-ascii?Q?TmTwOZAdtSe8cV4SdtzNFqz9mqCmeVR7FMFlBW1rUgjH0I0RTvda3hnW1l1f?= =?us-ascii?Q?XJ4/hukmD+ai6yfq+YW+ggFWwEsTJ5MH50hMaM2Ft6HLrXfIxjBlu7hjrBfx?= =?us-ascii?Q?PuhiM/4UpkzbON7zEWtNs4Hw5jhur96nnLT7SGXgBhqwTMhtP1tk9tUbTvLE?= =?us-ascii?Q?D8jYx51m/0GKOQK0mIG9vPk9BqBYg1zELIj/7S03spzF6IdKtsOOdmVL+F+j?= =?us-ascii?Q?aJMeWPHlyfpSWSpx/RfrPLwzuJ8lB1Io0wp4gc45u2ePq1Bxo0dRftyFQgiF?= =?us-ascii?Q?uOkcZDSgepGHuWT2XqAFPViIYX4ZD78ZH8XXyMTo694EuZK5Pmbz9aeRi066?= =?us-ascii?Q?xzaJdSz7R94+wtQjxqWU73fJJnasvBYIOT/KcU48FWt/CJYxwLkFiZIK5vGj?= =?us-ascii?Q?pPqeM3B3xqNSRs8NY6kD3aT+sz5UssQuLVAZbHNw0c5KYbSjEt3FBz2PAVgh?= =?us-ascii?Q?7a6L?= X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 8a054a40-afaf-4b66-680a-08d8bdddb9bb X-MS-Exchange-CrossTenant-AuthSource: VI1PR04MB3983.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Jan 2021 07:25:28.5587 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: XnTbB7zz19ssmKz2Z5VU6+lm2hQsoqW4+0kA8rtC3FI+GeThod1uvXVwB5KBplqYj7TtKf/LFRuOIXYoVRes1Q== X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR04MB5711 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Artificially use 'plane' and 'old_plane_state' to avoid 'not used' warning. The precedent has already been set by other macros in the same file. Acked-by: Daniel Vetter Signed-off-by: Liu Ying --- v5->v6: * Fix commit message typo - s/Artifically/Artificially/ v4->v5: * No change. v3->v4: * Add Daniel's A-b tag. v2->v3: * Add a missing blank line. v1->v2: * No change. include/drm/drm_atomic.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h index ce7023e..6ade7a1 100644 --- a/include/drm/drm_atomic.h +++ b/include/drm/drm_atomic.h @@ -908,7 +908,10 @@ 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 -- 2.7.4