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Wed, 4 Jun 2025 22:46:03 +0000 Message-ID: <18e168a1-8c9e-4cee-9d26-b8969d3072fd@intel.com> Date: Wed, 4 Jun 2025 15:46:01 -0700 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] drm/nouveau/bl: Use kasprintf for interface name To: Timur Tabi , "christophe.jaillet@wanadoo.fr" , "philip.li@intel.com" , "simona@ffwll.ch" , "lyude@redhat.com" , "pierre.morrow@free.fr" , "airlied@gmail.com" , "dakr@kernel.org" , Ben Skeggs CC: "dri-devel@lists.freedesktop.org" , "nouveau@lists.freedesktop.org" , "linux-kernel@vger.kernel.org" References: <20250604-jk-nouveua-drm-bl-snprintf-fix-v1-1-79b1593ad664@intel.com> <704b69a6af32e0d89a6d88051c12f29fdadfa638.camel@nvidia.com> <24f7d99d-3249-4fcf-a9e4-af610cc9436b@intel.com> <751f786a3ceee08eff698633c39bb3a6b4b2f6d1.camel@nvidia.com> Content-Language: en-US From: Jacob Keller In-Reply-To: <751f786a3ceee08eff698633c39bb3a6b4b2f6d1.camel@nvidia.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: MW4PR03CA0002.namprd03.prod.outlook.com (2603:10b6:303:8f::7) To CO1PR11MB5089.namprd11.prod.outlook.com (2603:10b6:303:9b::16) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1PR11MB5089:EE_|PH7PR11MB5887:EE_ X-MS-Office365-Filtering-Correlation-Id: c3d892f5-0f1e-48f1-ed22-08dda3b99597 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|366016|1800799024|376014|41080700001; 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Another alternative which saves the stack and macro would >> be to add a new version of backlight_register_device which can pass the >> integer number itself into dev_set_name, but thats probably not worth >> the churn either. (Currently we snprintf into a buffer and then again >> copy that again into the device name...) > > If you really wanted to avoid stack space, you could add backlist_name[24] to 'struct > nouveau_backlight'. > I'm not too worried about it. I'll wait a bit for anyone else to comment and then send a v2 with blacklist_name set to 24 bytes. Thanks, Jake