DMA-API: others: use dma_set_coherent_mask()

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 <rmk+kernel@arm.linux.org.uk>

3 files changed, 12 insertions, 4 deletions

diff --git a/drivers/ata/pata_ixp4xx_cf.c b/drivers/ata/pata_ixp4xx_cf.c
index 1ec53f8ca96f..ddf470c2341d 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 bb82ef78ca85..81192d00b39e 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 acf667859cb6..701c4c10e08b 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);