From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A6259C2D0DB for ; Wed, 29 Jan 2020 15:37:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7A39520732 for ; Wed, 29 Jan 2020 15:37:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=st.com header.i=@st.com header.b="DnNqfCFP" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726799AbgA2Pgy (ORCPT ); Wed, 29 Jan 2020 10:36:54 -0500 Received: from mx07-00178001.pphosted.com ([62.209.51.94]:29562 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726750AbgA2Pgx (ORCPT ); Wed, 29 Jan 2020 10:36:53 -0500 Received: from pps.filterd (m0046037.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 00TFNBY9019444; Wed, 29 Jan 2020 16:36:38 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=st.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=STMicroelectronics; bh=wgw0wJHxD0KqntR0Tj8TO+wUsOBJhHj4e4NzjycWHY0=; b=DnNqfCFPPQOr0IV5DnGJH2VN3Olbe6oSMkOAWI+gSpdh1nP60QH26H7a8sFhzOptAXOU j7GOsZE7S6GdLcpwcY/9TOi+EZGkGnKY6EfwUBJpyTXDW+sovjABpkKBrXHGoICXj+yw U9vJ1fnl/qVKTsXLsVh0G/3HSE2iFYbfwqDKzmlxEfR1RQCV42t1fi1fBmu9wHHzKmgT HvXuXa23hPeO2LOZ6YTHq9fkjFnV1Jh6GBFew5yAj4GjqXtNvGejnGMHiwd14Txk7JYL rXzHcjXe5Ojv2yc7A4+uvz1q1fwq72vzHWR5BsQrUsgA77QAhxq2a8nxoacqAecW9DPT GA== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 2xrcay3vb6-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); 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 CC: , , , , Amelie Delaunay , Pierre-Yves MORDRET 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 Content-Type: text/plain 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 Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.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