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Sun, 20 Jul 2025 07:12:42 +0000 Message-ID: <0bcccd8b-a76b-484c-bb04-83dc6787c64f@intel.com> Date: Sun, 20 Jul 2025 10:12:36 +0300 User-Agent: Mozilla Thunderbird Subject: Re: [Intel-wired-lan] [PATCH v4 2/2] e1000e: ignore uninitialized checksum word on tgp To: Jacek Kowalski , Tony Nguyen , Przemek Kitszel , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , "Paolo Abeni" , Simon Horman , Vlad URSU CC: , References: <3fb71ecc-9096-4496-9152-f43b8721d937@jacekk.info> <28347e4f-c6a7-4194-8a80-34508891c8ec@jacekk.info> Content-Language: en-US From: Mor Bar-Gabay In-Reply-To: <28347e4f-c6a7-4194-8a80-34508891c8ec@jacekk.info> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: TL2P290CA0023.ISRP290.PROD.OUTLOOK.COM (2603:1096:950:3::12) To CY5PR11MB6307.namprd11.prod.outlook.com (2603:10b6:930:21::20) Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY5PR11MB6307:EE_|CH3PR11MB8154:EE_ X-MS-Office365-Filtering-Correlation-Id: 43b7634f-f5ee-406c-5f8a-08ddc75cd17c X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|7416014|376014|366016|921020|7053199007; X-Microsoft-Antispam-Message-Info: =?utf-8?B?VVpaK3EwcjNVSGlaZGpKcHBpZ1BzVkRFcmtiSldyajExN3VVbEpPYTJMek8r?= =?utf-8?B?dG9zNkRteitLbnlYQ2QrOFZqdkgwbHJNOEdWMmdBcjVMek1sTThIZXpqNlIz?= =?utf-8?B?ZjY0amhMTlhCcWEybWZvMkswT0lIdHhFT2dGMWR4OFhXMmdJT1JXZjMzU1R0?= =?utf-8?B?T0hvcjhjSDRuZnplTnZkdE5wQWgvdEh1c0ppTVFjWFlrM0NtTDJUZk9hR3kv?= =?utf-8?B?VWYwL00vanRjVzRWV1VpNmRqcmowQ2ViZ0RuOElxVHRZTWVaMHl5ZDdPMlha?= =?utf-8?B?bFlJMkZ5RzBoN1VEQzZjOXJLeGtyUDUxdkJtYzFXbXJUZEI5YndBRkpXOTV1?= =?utf-8?B?VFRoS3ZMb0VUZEdXeUxuTHJxSmpkckNBU3lJNmh3RXpMQ2V6NDdzN0pZUmtT?= =?utf-8?B?V2t0emxSRGZFYkljZ3FlWi9RcTdwWGw1ZGdXSmNzSUJMNWFvVHRBOFM2WHI3?= =?utf-8?B?cFN6Tmw0Ly96TnBsSUNrQ0luYityaWNISlYzZkNpOFdJNy9xWDlnclRPNjZ0?= =?utf-8?B?alZnVC9uK1UyaFVlL1RZMldMS01SM2ljL1FrNG5WVGVkOWVkc2lWVk15OWVq?= =?utf-8?B?QnBGcjc1TVdKSmU0YVAzM25hU2x3ZHFqV1o4YXZZZlRBbDlhdDA5dzBoeUFW?= =?utf-8?B?eUR4SHJpNXNXNHRtSDE5WXNrSEYvZWxDUTFseXdreWwveklOTGQ0Y3NoVjIr?= =?utf-8?B?ZmpkSHZVMGI2Vk9FOVQyNFBtcCtHM2cvOVgwMFZVcDIzVThoT0JpV1dZOUNi?= =?utf-8?B?VEVnYUQzSnhPUHZmajA0Y1VWbnNWYUpsZkUzWDl3M3BSSzgzSXVHLzNXU3dI?= =?utf-8?B?OGxUeERhZDE0bUw3NUFUSGE4QmdiVHkyQ29aaWF6MWt5bDZoNUwvRDBiV1hm?= =?utf-8?B?MEFWUllPdklVclpJTCtCSHBsc0VPVW9VM2pDQklsUjdVZkh0WjQrUDlZOWpv?= =?utf-8?B?KzdDSnpHbGNHMzVvaitsMGJ3akNUYmU2Umx2dWZ5MDV3S1hmWGpqdE8xb2lY?= =?utf-8?B?NHJPQnIwemN0RXpPV3dSWEJvRy9TbG13bDlNSnFTVHFjVjdYU244ak5ZSkpU?= =?utf-8?B?emREWWFmUDRCS1p3Z1lJSlo2WVQxNGEySHp1VFpIdENHQ294QTFyOFdhaXp1?= =?utf-8?B?TUFrZWtoYWNMbmxxbzBFYVZGclVFcDVLODNheElqd3dJOUlQS25FR1g0T2tO?= =?utf-8?B?ZTY2QnBTV2Y0dEduQjNWT0l5bXdOR3RZLzgxdTk5N3BXeG9lVGlVaUpHdlJS?= =?utf-8?B?eEVRdTlGMEk5TGlFaE1kdStHczI2VFgxTkZSSHhEN0dQL3V6OWZpUjA1UmhY?= =?utf-8?B?MU40TVRBdXRjS01oVlNEMVQ0SVYyYU9vQWoraGxHc2lYWXlJbnJvdVBTN0t5?= =?utf-8?B?ZEVwSWwxRVVJOXhqWXlGSE95aTB3ZVh5cDRQSjJtd0VpaWF3U3J6bmtFOHZs?= =?utf-8?B?SjdNVlVSTmsvQm80SVVKQWg0bHBML2lMMTU1TUx2SFBxcklENVVtV2pDVlVZ?= =?utf-8?B?Ui9IQkJOQVpQdlJIOHdLZGptZWt4ZlB5Ly85akJZUHVDMXBaWjFOa3kyYWlv?= =?utf-8?B?ajI0d29Ud3VkSDdsZTdXclNMUzV4TGRvQXJScGFqQW9oaU8xbmRyZE1QY052?= =?utf-8?B?d3FJa241SmEydXU4a2NWUW5Cc000UmZjbHdQQ0ZvK1VEWHVYVW9YcjZyU2RC?= =?utf-8?B?cGE1YVZma0pmMWZIdVJaZ1V0U2s3aTNHeVpzamk5WFJlaG9kSWVLU3FUTCtE?= =?utf-8?B?eWxMMEtaQURwV3R1RW5qMTBQanZ3UlpVV1R3RnlUQjhQdkhqQWFrcHhJU2Vr?= =?utf-8?B?dzI4WWh2KytiUG9xN0h4WjU1NEN4ZDRBenFJellJWXMzY1dSWm9KeVVnTExz?= =?utf-8?B?WjAvbWFDWWtiUVNWeWdtd3k0MUR0UWlacitHYVgydGZQQ3ZHcCtHTU41ZDh5?= =?utf-8?B?YTF1SEdhU3N5cjJ4M1lqWmk2b2lISWRPN1hYc09kRFlxSTI4TzVNbDVTOWpl?= =?utf-8?B?Tkd0d1lteGJRPT0=?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:CY5PR11MB6307.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(1800799024)(7416014)(376014)(366016)(921020)(7053199007);DIR:OUT;SFP:1101; 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This means >> that all NVM images must leave the factory with correct checksum and >> checksum valid bit set. > > Unfortunately some systems have left the factory with an uninitialized > value of 0xFFFF at register address 0x3F (checksum word location). > So on Tiger Lake platform we ignore the computed checksum when such > condition is encountered. > > Signed-off-by: Jacek Kowalski > Tested-by: Vlad URSU > Fixes: 4051f68318ca9 ("e1000e: Do not take care about recovery NVM checksum") > Cc: stable@vger.kernel.org > Reviewed-by: Simon Horman > Reviewed-by: Vitaly Lifshits > --- > drivers/net/ethernet/intel/e1000e/defines.h | 3 +++ > drivers/net/ethernet/intel/e1000e/nvm.c | 6 ++++++ > 2 files changed, 9 insertions(+) > Tested-by: Mor Bar-Gabay