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Miller" CC: "linux-mediatek@lists.infradead.org" , "yt.shen@mediatek.com" , Matthias Brugger , "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Jose Abreu Subject: RE: [PATCH] net: stmmac: Fix RX Coalesce IOC always true issue Thread-Topic: [PATCH] net: stmmac: Fix RX Coalesce IOC always true issue Thread-Index: AQHWPkKKXZ3xttNf8ES5nXitJQQIzqjQVajg Date: Tue, 9 Jun 2020 14:20:58 +0000 Message-ID: References: <20200609094133.11053-1-biao.huang@mediatek.com> In-Reply-To: <20200609094133.11053-1-biao.huang@mediatek.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-dg-ref: =?us-ascii?Q?PG1ldGE+PGF0IG5tPSJib2R5LnR4dCIgcD0iYzpcdXNlcnNcam9hYnJldVxh?= =?us-ascii?Q?cHBkYXRhXHJvYW1pbmdcMDlkODQ5YjYtMzJkMy00YTQwLTg1ZWUtNmI4NGJh?= =?us-ascii?Q?MjllMzViXG1zZ3NcbXNnLTZlYzIxYmU4LWFhNWMtMTFlYS1iNjRkLWY0ZDEw?= =?us-ascii?Q?OGU2NmE0NFxhbWUtdGVzdFw2ZWMyMWJlYS1hYTVjLTExZWEtYjY0ZC1mNGQx?= 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1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: wHwJ6ZDwqfSaB/mM1ruD6aWj4UjlPuETEJiX6FgzZ/741jfF0ejyK6C0raX4b1H30nE+dw2XiYcAqv67a9AXiE2chMT3928ULUcg2PhXjmD256zlATmBCikuIjzj0hARC61UVA/9zCMUPUKt0R2ux8sqtyfAaR+QiGcBvkG84fOZWQSp4AqKK9Z7oNE79e10uPkz4+Z31AiUkG1hVTeC4R9sszGfbXo0n1wdv0bMsxHp1NEQlGhiBoe6jTATz7TIGkWGfXguZsujY7rmOs2xlwoxmPoeIgtxgBinj1JV9J4DX4inwivDDLV12ciQBT/fpqVwejnGK8N+VCRyYEpQng== x-forefront-antispam-report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:BN6PR12MB1779.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFTY:;SFS:(366004)(396003)(136003)(346002)(376002)(39860400002)(76116006)(66946007)(33656002)(7696005)(5660300002)(4326008)(186003)(478600001)(71200400001)(6506007)(86362001)(52536014)(66446008)(8676002)(110136005)(54906003)(4744005)(64756008)(9686003)(316002)(55016002)(66476007)(2906002)(26005)(66556008)(8936002)(107886003);DIR:OUT;SFP:1102; x-ms-exchange-antispam-messagedata: 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 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: synopsys.com X-MS-Exchange-CrossTenant-Network-Message-Id: 5d436b1a-17e6-4756-5ce2-08d80c8054bf X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Jun 2020 14:20:58.9040 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: c33c9f88-1eb7-4099-9700-16013fd9e8aa X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: FvmZXJavWRUAyspQSFJ5FMMJXv8kAk8NRshtP/Q8RQY6e7R95B303EQXNNeRJPseOZkectDGIOB/CLpElxEorg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR12MB1299 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Biao Huang Date: Jun/09/2020, 10:41:33 (UTC+00:00) > - rx_q->rx_count_frames +=3D priv->rx_coal_frames; > - if (rx_q->rx_count_frames > priv->rx_coal_frames) > + if (rx_q->rx_count_frames >=3D priv->rx_coal_frames) This is no right. If you want to RX IC bit to not always be set you need=20 to change coalesce parameters using ethtool. --- Thanks, Jose Miguel Abreu