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Received: from VI1PR04MB7104.eurprd04.prod.outlook.com (2603:10a6:800:126::9) by DB9PR04MB9940.eurprd04.prod.outlook.com (2603:10a6:10:4c1::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6254.35; Wed, 5 Apr 2023 10:53:49 +0000 Received: from VI1PR04MB7104.eurprd04.prod.outlook.com ([fe80::74bd:991c:527d:aa61]) by VI1PR04MB7104.eurprd04.prod.outlook.com ([fe80::74bd:991c:527d:aa61%9]) with mapi id 15.20.6254.035; Wed, 5 Apr 2023 10:53:48 +0000 Message-ID: <3a51acb5-6862-7558-5807-c94f8e0d0f64@suse.com> Date: Wed, 5 Apr 2023 12:53:46 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.9.0 Subject: Re: issues with cdc ncm host class driver Content-Language: en-US To: "Purohit, Kaushal" , "stable@vger.kernel.org" Cc: "regressions@lists.linux.dev" , "linux-usb@vger.kernel.org" References: From: Oliver Neukum In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-ClientProxiedBy: FR2P281CA0053.DEUP281.PROD.OUTLOOK.COM (2603:10a6:d10:93::6) To VI1PR04MB7104.eurprd04.prod.outlook.com (2603:10a6:800:126::9) Precedence: bulk X-Mailing-List: regressions@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: VI1PR04MB7104:EE_|DB9PR04MB9940:EE_ X-MS-Office365-Filtering-Correlation-Id: f0c44ef6-6e37-4a52-93fd-08db35c408ea X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Driver clearly says the significance of network capabilities. (snapshot below) > > However, with the mentioned patch these values are disrespected and commands specific to these capabilities are sent from the host regardless of device' capabilities to handle them. > > Currently we are setting these bits to 0 indicating no capabilities on our device and still we observe that Host (Linux kernel host cdc driver) has been sending requests specific to these capabilities. Hi, please test the patch I've attached to kernel.org's bugzilla. Regards Oliver