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Tue, 15 Jun 2021 22:22:42 -0500 Received: from weisheng-Pro-E800-G4-WS950T.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server id 15.1.2242.4 via Frontend Transport; Tue, 15 Jun 2021 22:22:41 -0500 From: Wesley Sheng To: CC: , Subject: [PATCH] nvme: Correct the prps per page calculation method Date: Wed, 16 Jun 2021 11:22:38 +0800 Message-ID: <20210616032238.76916-1-wesley.sheng@amd.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: d35392be-69f2-4acb-612d-08d93076012e X-MS-TrafficTypeDiagnostic: BYAPR12MB4982: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:765; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: dlRK7X3wuEn7em8j+iD0Up+kMq5PkPpCPD/VE2C57E7SuEnnj5xPtHLkpQ7UXLQxZxabiMZbnp9XDFRXlSqgG6E93jfRVPdUN6fLMvMaDLxllPxsib8yFkGyvDBQE6v2azBPE+e64g7HaLW/tcsiRgyC1JhB5+0WqlAhU4plYr82Auxhv4hrqIjh1vBQkRPe26bCbV6R6z4fnrivk3E28qdqmMXxj/6MSDbxBCc91X5o3B9slpmsAgH580HvbkXC0zlNKcqPvzgoGl9h3N998dyIodEXP7spXPbONEEH2o2sEJH4auwEOEX3wbkQNrPgqfRebLfptGrzbRrXmfdfME+/7+VB/q+p2lTHhfT+5O4qcOYsN0pQCOmAUoS2D4OXuoE1MwleRg6J+PVKY2fP1u4+w5jG/65K+NkQA0yofLdm5rur3XcdE3mrGPFl+NPUyAYTwlfLC/4ifAI9tQ/wc3/htTojnF0JgpDipwzOvq+jaRQfxMYvpuv6DxP7YbhkEP7xSpG17xY0M12l74Zq/aEhg2wmgz/byE+PTnQ68mC5+Oh9DoKQF9+JhWb3lZa9fV5FNiFMLqHAo+9N1yZts0zGSl3Gt9AS2v0SGnWkx9JQfNSyHN9sDwlwcPBh5TqNUTki+JgK/roJltpBZdlaZy/TaNwLs4bent3LCE+H4LS7Uvx2wLyV4dKfNmLeYLIH X-Forefront-Antispam-Report: CIP:165.204.84.17; CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:SATLEXMB03.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(4636009)(396003)(376002)(346002)(39860400002)(136003)(36840700001)(46966006)(36756003)(47076005)(8676002)(186003)(7696005)(1076003)(4326008)(54906003)(36860700001)(8936002)(26005)(316002)(5660300002)(6666004)(81166007)(44832011)(86362001)(478600001)(6916009)(2906002)(426003)(82740400003)(336012)(82310400003)(83380400001)(70206006)(356005)(70586007)(4744005)(2616005)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Jun 2021 03:22:43.2767 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: d35392be-69f2-4acb-612d-08d93076012e 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=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT055.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR12MB4982 X-Mailman-Approved-At: Wed, 16 Jun 2021 06:09:29 +0200 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.2 at phobos.denx.de X-Virus-Status: Clean From: wesleywesley Each prp is 8 bytes, calculate the number of prps per page should just divide page size by 8 there is no need to minus 1 Signed-off-by: wesleywesley Reviewed-by: Bin Meng --- drivers/nvme/nvme.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/nvme/nvme.c b/drivers/nvme/nvme.c index fc64d93ab8..622bb378c0 100644 --- a/drivers/nvme/nvme.c +++ b/drivers/nvme/nvme.c @@ -79,7 +79,7 @@ static int nvme_setup_prps(struct nvme_dev *dev, u64 *prp2, u64 *prp_pool; int length = total_len; int i, nprps; - u32 prps_per_page = (page_size >> 3) - 1; + u32 prps_per_page = page_size >> 3; u32 num_pages; length -= (page_size - offset);