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client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by MN1PEPF0000ECD6.mail.protection.outlook.com (10.167.242.135) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.8922.22 via Frontend Transport; Thu, 10 Jul 2025 11:23:37 +0000 Received: from SATLEXMB05.amd.com (10.181.40.146) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Thu, 10 Jul 2025 06:23:37 -0500 Received: from SATLEXMB03.amd.com (10.181.40.144) by SATLEXMB05.amd.com (10.181.40.146) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Thu, 10 Jul 2025 06:23:36 -0500 Received: from xhdthippesw40.xilinx.com (10.180.168.240) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server id 15.1.2507.39 via Frontend Transport; Thu, 10 Jul 2025 06:23:35 -0500 From: Devendra K Verma To: CC: , , , Subject: [PATCH] dmaengine: dw-edma: Set status for callback_result Date: Thu, 10 Jul 2025 16:53:00 +0530 Message-ID: <20250710112300.439575-1-devverma@amd.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: None (SATLEXMB05.amd.com: devverma@amd.com does not designate permitted sender hosts) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MN1PEPF0000ECD6:EE_|DS7PR12MB6142:EE_ X-MS-Office365-Filtering-Correlation-Id: 86e45ba6-af93-460a-cd50-08ddbfa43746 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|1800799024|36860700013|376014; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Jul 2025 11:23:37.8971 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 86e45ba6-af93-460a-cd50-08ddbfa43746 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=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: MN1PEPF0000ECD6.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS7PR12MB6142 Content-Type: text/plain; charset="utf-8" DMA Engine has support for the callback_result which provides the status of the request and the residue. This helps in determining the correct status of the request and in efficient resource management of the request. Signed-off-by: Devendra K Verma --- drivers/dma/dw-edma/dw-edma-core.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/dma/dw-edma/dw-edma-core.c b/drivers/dma/dw-edma/dw-ed= ma-core.c index c2b88cc99e5d..9f37dc6c92c6 100644 --- a/drivers/dma/dw-edma/dw-edma-core.c +++ b/drivers/dma/dw-edma/dw-edma-core.c @@ -596,6 +596,25 @@ dw_edma_device_prep_interleaved_dma(struct dma_chan *d= chan, return dw_edma_device_transfer(&xfer); } =20 +static void dw_hdma_set_callback_result(struct virt_dma_desc *vd, + enum dmaengine_tx_result result) +{ + u32 residue =3D 0; + struct dw_edma_desc *desc; + struct dmaengine_result *res; + + if (!vd->tx.callback_result) + return; + + desc =3D vd2dw_edma_desc(vd); + if (desc) + residue =3D desc->alloc_sz - desc->xfer_sz; + + res =3D &vd->tx_result; + res->result =3D result; + res->residue =3D residue; +} + static void dw_edma_done_interrupt(struct dw_edma_chan *chan) { struct dw_edma_desc *desc; @@ -609,6 +628,8 @@ static void dw_edma_done_interrupt(struct dw_edma_chan = *chan) case EDMA_REQ_NONE: desc =3D vd2dw_edma_desc(vd); if (!desc->chunks_alloc) { + dw_hdma_set_callback_result(vd, + DMA_TRANS_NOERROR); list_del(&vd->node); vchan_cookie_complete(vd); } @@ -645,6 +666,7 @@ static void dw_edma_abort_interrupt(struct dw_edma_chan= *chan) spin_lock_irqsave(&chan->vc.lock, flags); vd =3D vchan_next_desc(&chan->vc); if (vd) { + dw_hdma_set_callback_result(vd, DMA_TRANS_ABORTED); list_del(&vd->node); vchan_cookie_complete(vd); } --=20 2.43.0