drm/rcar-du: Use devm_ioremap_resource()

Replace the devm_request_mem_region() and devm_ioremap_nocache() calls
with devm_ioremap_resource().

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
index dc0fe09b2ba10d8b39f51e29a9340818f8c253ff..f776b1c66ef4c7d24f76e78341768f6c33016d5b 100644 (file)
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
@@ -107,7 +107,6 @@ static int rcar_du_load(struct drm_device *dev, unsigned long flags)
        struct platform_device *pdev = dev->platformdev;
        struct rcar_du_platform_data *pdata = pdev->dev.platform_data;
        struct rcar_du_device *rcdu;
-       struct resource *ioarea;
        struct resource *mem;
        int ret;
 
@@ -129,24 +128,9 @@ static int rcar_du_load(struct drm_device *dev, unsigned long flags)
 
        /* I/O resources and clocks */
        mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-       if (mem == NULL) {
-               dev_err(&pdev->dev, "failed to get memory resource\n");
-               return -EINVAL;
-       }
-
-       ioarea = devm_request_mem_region(&pdev->dev, mem->start,
-                                        resource_size(mem), pdev->name);
-       if (ioarea == NULL) {
-               dev_err(&pdev->dev, "failed to request memory region\n");
-               return -EBUSY;
-       }
-
-       rcdu->mmio = devm_ioremap_nocache(&pdev->dev, ioarea->start,
-                                         resource_size(ioarea));
-       if (rcdu->mmio == NULL) {
-               dev_err(&pdev->dev, "failed to remap memory resource\n");
-               return -ENOMEM;
-       }
+       rcdu->mmio = devm_ioremap_resource(&pdev->dev, mem);
+       if (IS_ERR(rcdu->mmio))
+               return PTR_ERR(rcdu->mmio);
 
        rcdu->clock = devm_clk_get(&pdev->dev, NULL);
        if (IS_ERR(rcdu->clock)) {