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Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by CO1NAM11FT060.mail.protection.outlook.com (10.13.175.132) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.5373.15 via Frontend Transport; Wed, 22 Jun 2022 15:24:39 +0000 Received: from [10.254.241.52] (10.180.168.240) 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 15.1.2375.28; Wed, 22 Jun 2022 10:24:37 -0500 Message-ID: <687fcc3e-5ccc-78ce-fae3-98afe3dc5341@amd.com> Date: Wed, 22 Jun 2022 17:24:35 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.10.0 Subject: Re: [PATCH] dmaengine: remove DMA_MEMCPY_SG once again Content-Language: en-US To: Adrian Larumbe , Vinod Koul CC: Christoph Hellwig , , , , References: <20220606074733.622616-1-hch@lst.de> <20220606195455.qmq3yu6mc6g4rmm2@sobremesa> <20220622145021.r42vlkmokd3eqmqe@sobremesa> From: Michal Simek In-Reply-To: <20220622145021.r42vlkmokd3eqmqe@sobremesa> Content-Type: text/plain; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 Jun 2022 15:24:39.9958 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 733783c0-ea99-437f-6464-08da54635344 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: CO1NAM11FT060.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR12MB2815 Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org On 6/22/22 16:50, Adrian Larumbe wrote: > CAUTION: This message has originated from an External Source. Please use proper judgment and caution when opening attachments, clicking links, or responding to this email. > > > On 07.06.2022 09:33, Vinod Koul wrote: >> There are no clients in mainline which call this API. There is a driver >> which implements this API, but no users... >> >> $ git grep dmaengine_prep_dma_memcpy_sg >> include/linux/dmaengine.h:static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_memcpy_sg( > > This is true, when I sent this I thought my at the time employer had already > upstreamed their driver changes which make this of this API call, but apparently > it never happened after I left. > > In this wise, this change series should probably go away altogether, even if > that means it leaves that driver feature unutilised. We also don't have a need for it. Driver which was using it is no longer used that's why not a problem to remove it. That's why Acked-by: Michal Simek Thanks, Michal