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Miller" , "Eric Dumazet" , Jakub Kicinski , Paolo Abeni , Michal Simek CC: , , Subject: [PATCH net-next] net: xilinx: axienet: Treat xlnx,rxmem as a required property Date: Thu, 6 Aug 2026 22:32:53 +0530 Message-ID: <20260806170253.1199749-1-suraj.gupta2@amd.com> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH2PEPF0000009E:EE_|CH3PR12MB9284:EE_ X-MS-Office365-Filtering-Correlation-Id: 0135765e-91e4-43ff-43d8-08def3dc9014 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700016|23010399003|376014|1800799024|82310400026|6133799003|10067099003|56012099006|11063799006|18002099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:satlexmb07.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(36860700016)(23010399003)(376014)(1800799024)(82310400026)(6133799003)(10067099003)(56012099006)(11063799006)(18002099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: WKBU0eHAlCVzBMiuY63veUBmrSHaqKCo4LBIDkldvrGku6kdfHTcQTAACWbKp5GOnLIIzMhEoRpD5AKmZpQiKs328aInNLCpIx0i0chz/0YzRAPHotzw5O2kpnbZ6MnNnOIRXqfQz3KPtObemRJm9okbz1C0QJ+1fXKJxvNMYqs7wlY/OmwrnSX1wJOjWeTyIpWbOjYoRSbqrtyJEFjcvmB4qmsiEcMZ6ZBBwpIEfkR9Pd3i9KM7NccUWQT+ronuBjVuIzEy/xIJxtAp7mzDv4l1JIoGScp/4q5dmWhZCSm1qP0ytp/rIjv0E9gGFueUfBNO1epizjvcP+NGcBUYt1/g3PXo4ro5o795xtGUB0PzguVt0Ry1TSGdM6HESd8pGV3Zc4IClmrmpM22anc8Vjd2b6h+85DSYX4SjnPTlyHDOIFaMx681DtOY3Uh0fmM X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Aug 2026 17:02:56.8451 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 0135765e-91e4-43ff-43d8-08def3dc9014 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CH2PEPF0000009E.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB9284 "xlnx,rxmem" device-tree property is used to learn the size of the Rx/Tx packet buffer built into the ethernet IP, but return value of of_property_read_u32() is ignored. When the property is absent lp->rxmem is left at 0, which silently limits the interface to the default MTU and disables jumbo frames with no indication of the misconfiguration. "xlnx,rxmem" has been documented as a required property since the binding was introduced. Check the return value of of_property_read_u32() and fail probe when the property is missing, so a misconfigured device tree is reported rather than silently degrading functionality. Signed-off-by: Suraj Gupta --- drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c index fcf517069d16..1722b7038f34 100644 --- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c +++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c @@ -2898,7 +2898,10 @@ static int axienet_probe(struct platform_device *pdev) * Here we check for memory allocated for Rx/Tx in the hardware from * the device-tree and accordingly set flags. */ - of_property_read_u32(pdev->dev.of_node, "xlnx,rxmem", &lp->rxmem); + ret = of_property_read_u32(pdev->dev.of_node, "xlnx,rxmem", &lp->rxmem); + if (ret) + return dev_err_probe(&pdev->dev, ret, + "failed to read xlnx,rxmem property\n"); lp->switch_x_sgmii = of_property_read_bool(pdev->dev.of_node, "xlnx,switch-x-sgmii"); -- 2.25.1