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Bottomley" , "Martin K. Petersen" , Stanley Chu , Bean Huo , Tomas Winkler , Thomas Gleixner , Allison Randal , open list Subject: RE: [PATCH v4 4/5] scsi: ufs: Do not clear the DL layer timers Thread-Topic: [PATCH v4 4/5] scsi: ufs: Do not clear the DL layer timers Thread-Index: AQHVmee89Uj0xO4g1EKSBfsTmVIai6eUMy8A Date: Wed, 20 Nov 2019 15:03:10 +0000 Message-ID: References: <1573624824-671-1-git-send-email-cang@codeaurora.org> <1573624824-671-5-git-send-email-cang@codeaurora.org> In-Reply-To: <1573624824-671-5-git-send-email-cang@codeaurora.org> 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-ht: Tenant x-ms-office365-filtering-correlation-id: c49cfe29-7737-4104-273b-08d76dcac1ff x-ms-traffictypediagnostic: MN2PR04MB6960: x-microsoft-antispam-prvs: wdcipoutbound: EOP-TRUE x-ms-oob-tlc-oobclassifiers: OLM:7219; x-forefront-prvs: 02272225C5 x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(4636009)(366004)(189003)(199004)(6246003)(54906003)(8676002)(76176011)(2501003)(74316002)(305945005)(7736002)(6506007)(102836004)(11346002)(476003)(14454004)(186003)(33656002)(486006)(76116006)(25786009)(498600001)(446003)(81156014)(81166006)(71200400001)(2201001)(4744005)(66066001)(66946007)(66476007)(7416002)(7696005)(66556008)(64756008)(66446008)(26005)(3846002)(86362001)(9686003)(99286004)(6436002)(71190400001)(6116002)(8936002)(52536014)(256004)(2906002)(55016002)(5660300002)(4326008)(110136005)(229853002);DIR:OUT;SFP:1102;SCL:1;SRVR:MN2PR04MB6960;H:MN2PR04MB6991.namprd04.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;MX:1;A:1; x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: PjGgofKSF5bGnhBatLDaKqgSBDOfA/GtOSLaNnQ60xOfiKpjUllrpqTCTW+1kiMnn7Ka6pQrPQosleKatuXqRHN8rSpWIh27WbaCDX5rdz6JUboi2GBEB8gedNePWd7iaUBVaCTCmVwvc5FfKWVG4sAahdYoX2MhdZW6n7bDAGIvyemRgdSYH9ZI06qJaKgV8LN39Mic3d6JTapY9qLwtBRowkIXKhqlSxxYNQfC512XyEC9GLq9lE8moWrFRWPoA6lgUWQGsfTWhoZFXMHoCQ5TgMq51406fOF5wXUQ+YP2mVE8HriejegkU2RLmTPYqPuigNz6txto+TyIVwL1sx+dTxBvXHV+tqCSNilthoXVp9vqxeN5YfeYNy9YX7BO0z8sMP8IfxIoKidPs7OQ2yE4D21mUYiirxW153UYgWxRweym53jDPY/sWeNBW/nT 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: c49cfe29-7737-4104-273b-08d76dcac1ff X-MS-Exchange-CrossTenant-originalarrivaltime: 20 Nov 2019 15:03:10.0545 (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: DifD0Mb2LJD3bZh914n8hohaGr9cWy8UU8Kp2rZgu8ZXLWT1FcBRLBk+pruch4Bc+ntNmo+zD6moZK3Z+UZulg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR04MB6960 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org =20 >=20 > During power mode change, PACP_PWR_Req frame sends > PAPowerModeUserData parameters (and they are considered valid by device i= f > Flags[4] - UserDataValid bit is set in the same frame). > Currently we don't set these PAPowerModeUserData parameters and hardware > always sets UserDataValid bit which would clear all the DL layer timeout = values > of the peer device after the power mode change. >=20 > This change sets the PAPowerModeUserData[0..5] to UniPro specification > recommended default values, in addition we are also setting the relevant > DME_LOCAL_* timer attributes as required by UFS HCI specification. >=20 > Signed-off-by: Can Guo Reviewed-by Avri Altman