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Miller" , Nicolas Ferre , Alexandre Belloni , Claudiu Beznea , Koichiro Den , Niklas Cassel Cc: dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-nvme@lists.infradead.org, mhi@lists.linux.dev, linux-arm-msm@vger.kernel.org, linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org, imx@lists.linux.dev, Frank Li , Damien Le Moal X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1767653229; l=1297; i=Frank.Li@nxp.com; s=20240130; h=from:subject:message-id; bh=ewejcruFbomjZgPOCeq5HHbbhhrn5qa2Jbl57FOSR28=; b=8i2ugaRKBKyDDJj7h0IYeYwjuqzVlQC+icao9r2teUTT+gVm6soMtQ9YF1z+BYZEgoua9LIzq vJh3ulri1bECWCXyX80wEAbsEbaafaVCPoR/vi/XF5WcJ4586wuA1GC X-Developer-Key: i=Frank.Li@nxp.com; a=ed25519; pk=I0L1sDUfPxpAkRvPKy7MdauTuSENRq+DnA+G4qcS94Q= X-ClientProxiedBy: SJ0PR03CA0345.namprd03.prod.outlook.com (2603:10b6:a03:39c::20) To DU2PR04MB8951.eurprd04.prod.outlook.com (2603:10a6:10:2e2::22) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DU2PR04MB8951:EE_|DB9PR04MB8185:EE_ X-MS-Office365-Filtering-Correlation-Id: 785a143d-9148-4640-9ba7-08de4cac74a2 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|52116014|7416014|376014|1800799024|366016|19092799006|921020|38350700014; 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Calling it for every DMA transfer is unnecessary and counterproductive. This function is generally intended for cleanup paths such as module removal, device close, or unbind operations. Remove the redundant calls for success path and keep it only at error path. Tested-by: Niklas Cassel Reviewed-by: Damien Le Moal Signed-off-by: Frank Li --- This one also fix stress test failure after remove mutex and use new API dmaengine_prep_slave_sg_config(). --- drivers/nvme/target/pci-epf.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/nvme/target/pci-epf.c b/drivers/nvme/target/pci-epf.c index f858a6c9d7cb90670037a957cebdcbf17dddc43b..56b1c6a7706a9e2dd9d8aaf17b4= 40129b948486c 100644 --- a/drivers/nvme/target/pci-epf.c +++ b/drivers/nvme/target/pci-epf.c @@ -420,10 +420,9 @@ static int nvmet_pci_epf_dma_transfer(struct nvmet_pci= _epf *nvme_epf, if (dma_sync_wait(chan, cookie) !=3D DMA_COMPLETE) { dev_err(dev, "DMA transfer failed\n"); ret =3D -EIO; + dmaengine_terminate_sync(chan); } =20 - dmaengine_terminate_sync(chan); - unmap: dma_unmap_single(dma_dev, dma_addr, seg->length, dir); =20 --=20 2.34.1