From mboxrd@z Thu Jan 1 00:00:00 1970 From: Russell King Subject: [PATCH 39/51] DMA-API: others: use dma_set_coherent_mask() Date: Fri, 20 Sep 2013 00:11:38 +0100 Message-ID: References: <20130919212235.GD12758@n2100.arm.linux.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20130919212235.GD12758@n2100.arm.linux.org.uk> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: alsa-devel@alsa-project.org, b43-dev@lists.infradead.org, devel@driverdev.osuosl.org, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, e1000-devel@lists.sourceforge.net, linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linux-doc@vger.kernel.org, linux-fbdev@vger.kernel.org, linux-ide@vger.kernel.org, linux-media@vger.kernel.org, linux-mmc@vger.kernel.org, linux-nvme@lists.infradead.org, linux-omap@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-samsung-soc@vger.kernel.org, linux-scsi@vger.kernel.org, linux-tegra@vger.kernel.org, linux-usb@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, Solarflare linux maintainers , uclinux-dist-devel@blackfin.uclinux.org Cc: Kukjin Kim , Joonyoung Shim , David Airlie , Seung-Woo Kim , Inki Dae , Kyungmin Park , Tejun Heo List-Id: alsa-devel@alsa-project.org The correct way for a driver to specify the coherent DMA mask is not to directly access the field in the struct device, but to use dma_set_coherent_mask(). Only arch and bus code should access this member directly. Convert all direct write accesses to using the correct API. Signed-off-by: Russell King --- drivers/ata/pata_ixp4xx_cf.c | 5 ++++- drivers/gpu/drm/exynos/exynos_drm_drv.c | 6 +++++- drivers/gpu/drm/omapdrm/omap_dmm_tiler.c | 5 +++-- 3 files changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/ata/pata_ixp4xx_cf.c b/drivers/ata/pata_ixp4xx_cf.c index 1ec53f8..ddf470c 100644 --- a/drivers/ata/pata_ixp4xx_cf.c +++ b/drivers/ata/pata_ixp4xx_cf.c @@ -144,6 +144,7 @@ static int ixp4xx_pata_probe(struct platform_device *pdev) struct ata_host *host; struct ata_port *ap; struct ixp4xx_pata_data *data = dev_get_platdata(&pdev->dev); + int ret; cs0 = platform_get_resource(pdev, IORESOURCE_MEM, 0); cs1 = platform_get_resource(pdev, IORESOURCE_MEM, 1); @@ -157,7 +158,9 @@ static int ixp4xx_pata_probe(struct platform_device *pdev) return -ENOMEM; /* acquire resources and fill host */ - pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); + ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); + if (ret) + return ret; data->cs0 = devm_ioremap(&pdev->dev, cs0->start, 0x1000); data->cs1 = devm_ioremap(&pdev->dev, cs1->start, 0x1000); diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c index bb82ef7..81192d0 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c @@ -286,7 +286,11 @@ static struct drm_driver exynos_drm_driver = { static int exynos_drm_platform_probe(struct platform_device *pdev) { - pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); + int ret; + + ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); + if (ret) + return ret; return drm_platform_init(&exynos_drm_driver, pdev); } diff --git a/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c b/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c index acf6678..701c4c1 100644 --- a/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c +++ b/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c @@ -664,8 +664,9 @@ static int omap_dmm_probe(struct platform_device *dev) } /* set dma mask for device */ - /* NOTE: this is a workaround for the hwmod not initializing properly */ - dev->dev.coherent_dma_mask = DMA_BIT_MASK(32); + ret = dma_set_coherent_mask(&dev->dev, DMA_BIT_MASK(32)); + if (ret) + goto fail; omap_dmm->dummy_pa = page_to_phys(omap_dmm->dummy_page); -- 1.7.4.4