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Wed, 29 Jan 2020 16:36:38 +0100 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id A580A10002A; Wed, 29 Jan 2020 16:36:37 +0100 (CET) Received: from Webmail-eu.st.com (sfhdag3node2.st.com [10.75.127.8]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 986FD2BC7C2; Wed, 29 Jan 2020 16:36:37 +0100 (CET) Received: from localhost (10.75.127.44) by SFHDAG3NODE2.st.com (10.75.127.8) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Wed, 29 Jan 2020 16:36:37 +0100 From: Amelie Delaunay To: Vinod Koul , Dan Williams , Maxime Coquelin , Alexandre Torgue Subject: [PATCH 5/8] dmaengine: stm32-dma: use dma_set_max_seg_size to set the sg limit Date: Wed, 29 Jan 2020 16:36:25 +0100 Message-ID: <20200129153628.29329-6-amelie.delaunay@st.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200129153628.29329-1-amelie.delaunay@st.com> References: <20200129153628.29329-1-amelie.delaunay@st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.44] X-ClientProxiedBy: SFHDAG7NODE3.st.com (10.75.127.21) To SFHDAG3NODE2.st.com (10.75.127.8) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138, 18.0.572 definitions=2020-01-29_03:2020-01-28, 2020-01-29 signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200129_073648_810871_482AB555 X-CRM114-Status: GOOD ( 12.14 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Amelie Delaunay , linux-kernel@vger.kernel.org, Pierre-Yves MORDRET , dmaengine@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org This patch adds dma_set_max_seg_size to define sg dma constraint. This constraint may be taken into account by client to scatter/gather its buffer. Signed-off-by: Ludovic Barre Signed-off-by: Amelie Delaunay --- drivers/dma/stm32-dma.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/dma/stm32-dma.c b/drivers/dma/stm32-dma.c index 25f7281932bd..b7e18cfcd439 100644 --- a/drivers/dma/stm32-dma.c +++ b/drivers/dma/stm32-dma.c @@ -1323,6 +1323,8 @@ static int stm32_dma_probe(struct platform_device *pdev) reset_control_deassert(rst); } + dma_set_max_seg_size(&pdev->dev, STM32_DMA_ALIGNED_MAX_DATA_ITEMS); + dma_cap_set(DMA_SLAVE, dd->cap_mask); dma_cap_set(DMA_PRIVATE, dd->cap_mask); dma_cap_set(DMA_CYCLIC, dd->cap_mask); -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel