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Thu, 5 Sep 2019 08:44:35 +0000 From: Avri Altman To: Chaotian Jing , Ulf Hansson CC: Matthias Brugger , Jens Axboe , Hannes Reinecke , YueHaibing , Wolfram Sang , Ming Lei , Chris Boot , Zachary Hays , "linux-mmc@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-mediatek@lists.infradead.org" , "srv_heupstream@mediatek.com" Subject: RE: [PATCH v2 2/2] mmc: block: add CMD13 polling for ioctl() cmd with R1B response Thread-Topic: [PATCH v2 2/2] mmc: block: add CMD13 polling for ioctl() cmd with R1B response Thread-Index: AQHVY78FV3LC8eVs1UiHHYg0C+TgPaccxI9Q Date: Thu, 5 Sep 2019 08:44:35 +0000 Message-ID: References: <20190905075318.15554-1-chaotian.jing@mediatek.com> <20190905075318.15554-3-chaotian.jing@mediatek.com> In-Reply-To: <20190905075318.15554-3-chaotian.jing@mediatek.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=Avri.Altman@wdc.com; x-originating-ip: [212.25.79.133] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: c365405c-3b67-42fe-056f-08d731dd47de x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600166)(711020)(4605104)(1401327)(4618075)(2017052603328)(7193020);SRVR:MN2PR04MB6784; x-ms-traffictypediagnostic: MN2PR04MB6784: x-microsoft-antispam-prvs: wdcipoutbound: EOP-TRUE x-ms-oob-tlc-oobclassifiers: OLM:4941; x-forefront-prvs: 015114592F x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(4636009)(376002)(366004)(136003)(39860400002)(396003)(346002)(199004)(189003)(81156014)(5660300002)(316002)(54906003)(26005)(110136005)(81166006)(14444005)(7696005)(476003)(25786009)(6436002)(6116002)(3846002)(8676002)(52536014)(71190400001)(71200400001)(102836004)(99286004)(229853002)(486006)(66066001)(6506007)(478600001)(2906002)(8936002)(4326008)(7736002)(446003)(305945005)(14454004)(4744005)(256004)(186003)(9686003)(74316002)(86362001)(7416002)(11346002)(76176011)(55016002)(33656002)(76116006)(53936002)(66946007)(66476007)(6246003)(64756008)(66556008)(66446008);DIR:OUT;SFP:1102;SCL:1;SRVR:MN2PR04MB6784;H:MN2PR04MB6991.namprd04.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: mT09dlgI7BOOu1LFWdRO3VJetslmHh67wSYvxgiEsucAsxZc7whNeYKiSPkOV1MN3dkq1WLFZIlRWcGYsIbYWjJwv0a7dy9shX/reDeYgURIPDMuF1TOesdia8+yPTXcXV4GotHYq6Zn3qNEERYRz3S6Ovu6Uz9/J3WSexrsL0bzQmtHcRT5HmmmAduRby/LM1G/SefTWLcwvEfHYzWxAo3T7fp6BwQkM8jtqQ7n4Oq9XMmQq4QtgFX6oCNSf46DYCJRhd5E+dfsJmaVFiDrGZwWr5Gr/6W8qiXOwFwgvYxHahO9pA1Y8Xz6JUl2F/pP+xGjPp5MbqLkMRzmE8JyQXsHZ2lzRaAFvn1GjB4ov7pXd+16AHlArD33xA/Sv+Htf2LfidKZJEPudLm1BUjKmh1tS9ZvATGdf80KVjjBFjk= x-ms-exchange-transport-forked: True Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-Network-Message-Id: c365405c-3b67-42fe-056f-08d731dd47de X-MS-Exchange-CrossTenant-originalarrivaltime: 05 Sep 2019 08:44:35.6298 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: DmIGjktbr7+KvvfqoaO213lNIlgNEzH7DLZ14dnwTyB7glYd3Npje8hiiVdpN9gaEAYf+GFF7ools0TmLCjZ+A== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR04MB6784 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >=20 >=20 > currently there is no CMD13 polling and other code to wait card > change to transfer state after R1B command completed. and this > polling operation cannot do in user space, because other request > may coming before the CMD13 from user space. >=20 > Signed-off-by: Chaotian Jing Reviewed-by: Avri Altman