[PATCH] drm/komeda: Use devm_platform_ioremap_resource() in komeda_dev_create()

[Markus Elfring]

From: Markus Elfring <elfr...@users.sourceforge.net>
Date: Sat, 21 Sep 2019 19:43:51 +0200

Simplify this function implementation by using a known wrapper function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfr...@users.sourceforge.net>
---
 drivers/gpu/drm/arm/display/komeda/komeda_dev.c | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_dev.c 
b/drivers/gpu/drm/arm/display/komeda/komeda_dev.c
index ca64a129c594..a387d923962e 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_dev.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_dev.c
@@ -172,19 +172,12 @@ struct komeda_dev *komeda_dev_create(struct device *dev)
        struct platform_device *pdev = to_platform_device(dev);
        const struct komeda_product_data *product;
        struct komeda_dev *mdev;
-       struct resource *io_res;
        int err = 0;

        product = of_device_get_match_data(dev);
        if (!product)
                return ERR_PTR(-ENODEV);

-       io_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-       if (!io_res) {
-               DRM_ERROR("No registers defined.\n");
-               return ERR_PTR(-ENODEV);
-       }
-
        mdev = devm_kzalloc(dev, sizeof(*mdev), GFP_KERNEL);
        if (!mdev)
                return ERR_PTR(-ENOMEM);
@@ -192,7 +185,7 @@ struct komeda_dev *komeda_dev_create(struct device *dev)
        mutex_init(&mdev->lock);

        mdev->dev = dev;
-       mdev->reg_base = devm_ioremap_resource(dev, io_res);
+       mdev->reg_base = devm_platform_ioremap_resource(pdev, 0);
        if (IS_ERR(mdev->reg_base)) {
                DRM_ERROR("Map register space failed.\n");
                err = PTR_ERR(mdev->reg_base);
--
2.23.0