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=-12.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 1C8B7C18E5A for ; Tue, 10 Mar 2020 18:35:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E1E7024670 for ; Tue, 10 Mar 2020 18:35:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583865310; bh=1DoYWTtnmVSAjKn7dSaWSG7C4nrmaty0spbQF3Qr8jg=; h=Date:From:To:Cc:Subject:In-Reply-To:List-ID:From; b=eEV697mZHuLCRXC5x/GDKI4TkcZoAvI4c4HC5teGcZ/1G0RFvP7wijzJutTvoWyhO Ffrl+Fa9WzcqXCHFZ2j8w+vLmgq7t9lJSodRDCFG6vnZvVgQBf95duPVU82hmQlrWA TgbLFnwzC7CR2wO1p3yFTTNK6H9Q8AN8e8AGHBsc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727364AbgCJSfK (ORCPT ); Tue, 10 Mar 2020 14:35:10 -0400 Received: from foss.arm.com ([217.140.110.172]:41010 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726283AbgCJSfJ (ORCPT ); Tue, 10 Mar 2020 14:35:09 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id EDAD030E; Tue, 10 Mar 2020 11:35:08 -0700 (PDT) Received: from localhost (unknown [10.37.6.21]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 6DA883F534; Tue, 10 Mar 2020 11:35:08 -0700 (PDT) Date: Tue, 10 Mar 2020 18:35:06 +0000 From: Mark Brown To: Michael Walle Cc: dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-spi@vger.kernel.org, Mark Brown , Sumit Semwal , Vladimir Oltean Subject: Applied "spi: spi-fsl-dspi: fix DMA mapping" to the spi tree In-Reply-To: <20200310073313.21277-1-michael@walle.cc> Message-Id: X-Patchwork-Hint: ignore Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The patch spi: spi-fsl-dspi: fix DMA mapping has been applied to the spi tree at https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark >From 22ee9de1ecfb4459a9b3a959994f6ccb4a3827a4 Mon Sep 17 00:00:00 2001 From: Michael Walle Date: Tue, 10 Mar 2020 08:33:13 +0100 Subject: [PATCH] spi: spi-fsl-dspi: fix DMA mapping Use the correct device to request the DMA mapping. Otherwise the IOMMU doesn't get the mapping and it will generate a page fault. The error messages look like: [ 3.008452] arm-smmu 5000000.iommu: Unhandled context fault: fsr=0x402, iova=0xf9800000, fsynr=0x3f0022, cbfrsynra=0x828, cb=8 [ 3.020123] arm-smmu 5000000.iommu: Unhandled context fault: fsr=0x402, iova=0xf9800000, fsynr=0x3f0022, cbfrsynra=0x828, cb=8 This was tested on a custom board with a LS1028A SoC. Signed-off-by: Michael Walle Link: https://lore.kernel.org/r/20200310073313.21277-1-michael@walle.cc Signed-off-by: Mark Brown --- drivers/spi/spi-fsl-dspi.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c index 0683a3fbd48c..50e3382f0c50 100644 --- a/drivers/spi/spi-fsl-dspi.c +++ b/drivers/spi/spi-fsl-dspi.c @@ -497,14 +497,16 @@ static int dspi_request_dma(struct fsl_dspi *dspi, phys_addr_t phy_addr) goto err_tx_channel; } - dma->tx_dma_buf = dma_alloc_coherent(dev, dspi->devtype_data->dma_bufsize, + dma->tx_dma_buf = dma_alloc_coherent(dma->chan_tx->device->dev, + dspi->devtype_data->dma_bufsize, &dma->tx_dma_phys, GFP_KERNEL); if (!dma->tx_dma_buf) { ret = -ENOMEM; goto err_tx_dma_buf; } - dma->rx_dma_buf = dma_alloc_coherent(dev, dspi->devtype_data->dma_bufsize, + dma->rx_dma_buf = dma_alloc_coherent(dma->chan_rx->device->dev, + dspi->devtype_data->dma_bufsize, &dma->rx_dma_phys, GFP_KERNEL); if (!dma->rx_dma_buf) { ret = -ENOMEM; @@ -541,10 +543,12 @@ static int dspi_request_dma(struct fsl_dspi *dspi, phys_addr_t phy_addr) return 0; err_slave_config: - dma_free_coherent(dev, dspi->devtype_data->dma_bufsize, + dma_free_coherent(dma->chan_rx->device->dev, + dspi->devtype_data->dma_bufsize, dma->rx_dma_buf, dma->rx_dma_phys); err_rx_dma_buf: - dma_free_coherent(dev, dspi->devtype_data->dma_bufsize, + dma_free_coherent(dma->chan_tx->device->dev, + dspi->devtype_data->dma_bufsize, dma->tx_dma_buf, dma->tx_dma_phys); err_tx_dma_buf: dma_release_channel(dma->chan_tx); @@ -560,20 +564,19 @@ static int dspi_request_dma(struct fsl_dspi *dspi, phys_addr_t phy_addr) static void dspi_release_dma(struct fsl_dspi *dspi) { struct fsl_dspi_dma *dma = dspi->dma; - struct device *dev = &dspi->pdev->dev; if (!dma) return; if (dma->chan_tx) { - dma_unmap_single(dev, dma->tx_dma_phys, + dma_unmap_single(dma->chan_tx->device->dev, dma->tx_dma_phys, dspi->devtype_data->dma_bufsize, DMA_TO_DEVICE); dma_release_channel(dma->chan_tx); } if (dma->chan_rx) { - dma_unmap_single(dev, dma->rx_dma_phys, + dma_unmap_single(dma->chan_rx->device->dev, dma->rx_dma_phys, dspi->devtype_data->dma_bufsize, DMA_FROM_DEVICE); dma_release_channel(dma->chan_rx); -- 2.20.1