From patchwork Tue May 3 22:50:43 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Serge Semin X-Patchwork-Id: 12836484 X-Patchwork-Delegate: lorenzo.pieralisi@arm.com Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 01997C433EF for ; Tue, 3 May 2022 22:51:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243851AbiECWyz (ORCPT ); Tue, 3 May 2022 18:54:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39832 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243852AbiECWyw (ORCPT ); Tue, 3 May 2022 18:54:52 -0400 Received: from mail.baikalelectronics.ru (mail.baikalelectronics.com [87.245.175.226]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id E3CC228990; Tue, 3 May 2022 15:51:17 -0700 (PDT) Received: from mail.baikalelectronics.ru (unknown [192.168.51.25]) by mail.baikalelectronics.ru (Postfix) with ESMTP id 70B4716DA; Wed, 4 May 2022 01:51:51 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.11.0 mail.baikalelectronics.ru 70B4716DA DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baikalelectronics.ru; s=mail; t=1651618311; bh=4e9cmuHuBiDIdato7BKqLnVJnuF18fszm+JCzcVUJxA=; h=From:To:CC:Subject:Date:In-Reply-To:References:From; b=MyoRhtLEKLiQcThP0ksI8GV23pqf74RrlitQkdhwDGtLCyxpz7SWdAcfMKeVnL15I JN0U0zcniuhtdAKyCYQCl6GntH9JhprBHg6vRMXw4sgHSkQ0WgWt0SJDSSlmPjS62w Wxno8Z0JLqEhGkrRWw55S0L/Xp/2KCiIV2h+ONIg= Received: from localhost (192.168.53.207) by mail (192.168.51.25) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 4 May 2022 01:51:17 +0300 From: Serge Semin To: Gustavo Pimentel , Vinod Koul , Jingoo Han , Bjorn Helgaas , Lorenzo Pieralisi , Frank Li , Manivannan Sadhasivam CC: Serge Semin , Serge Semin , Alexey Malahov , Pavel Parkhomenko , Rob Herring , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , , , , Gustavo Pimentel Subject: [PATCH v2 05/26] dmaengine: dw-edma: Fix missing src/dst address of the interleaved xfers Date: Wed, 4 May 2022 01:50:43 +0300 Message-ID: <20220503225104.12108-6-Sergey.Semin@baikalelectronics.ru> In-Reply-To: <20220503225104.12108-1-Sergey.Semin@baikalelectronics.ru> References: <20220503225104.12108-1-Sergey.Semin@baikalelectronics.ru> MIME-Version: 1.0 X-ClientProxiedBy: MAIL.baikal.int (192.168.51.25) To mail (192.168.51.25) Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org The interleaved DMA transfers support was added in the commit 85e7518f42c8 ("dmaengine: dw-edma: Add device_prep_interleave_dma() support"). It seems like the support was broken from the very beginning. Depending on the selected channel either source or destination address are left uninitialized which was obviously wrong. I don't really know how come the original modification was working for the commit author. Anyway let's fix it by initializing the destination address of the eDMA burst descriptors for the DEV_TO_MEM interleaved operations and by initializing the source address of the eDMA burst descriptors for the MEM_TO_DEV interleaved operations. Fixes: 85e7518f42c8 ("dmaengine: dw-edma: Add device_prep_interleave_dma() support") Signed-off-by: Serge Semin Reviewed-by: Manivannan Sadhasivam --- drivers/dma/dw-edma/dw-edma-core.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/dma/dw-edma/dw-edma-core.c b/drivers/dma/dw-edma/dw-edma-core.c index 04efcb16d13d..f0ef87d75ea9 100644 --- a/drivers/dma/dw-edma/dw-edma-core.c +++ b/drivers/dma/dw-edma/dw-edma-core.c @@ -456,6 +456,8 @@ dw_edma_device_transfer(struct dw_edma_transfer *xfer) * and destination addresses are increased * by the same portion (data length) */ + } else if (xfer->type == EDMA_XFER_INTERLEAVED) { + burst->dar = dst_addr; } } else { burst->dar = dst_addr; @@ -471,6 +473,8 @@ dw_edma_device_transfer(struct dw_edma_transfer *xfer) * and destination addresses are increased * by the same portion (data length) */ + } else if (xfer->type == EDMA_XFER_INTERLEAVED) { + burst->sar = src_addr; } }