Use devm_ioremap_resource() in order to make the code simpler.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
        if (!mem)
                return -ENXIO;
        mem_size = resource_size(mem);
-       if (!devm_request_mem_region(&pdev->dev, mem->start, mem_size, name))
-               return -EBUSY;
-       priv->base = devm_ioremap(&pdev->dev, mem->start, mem_size);
-       if (!priv->base)
-               return -EBUSY;
+
+       priv->base = devm_ioremap_resource(&pdev->dev, mem);
+       if (IS_ERR(priv->base))
+               return PTR_ERR(priv->base);
 
        spin_lock_init(&priv->reg_lock);
        priv->indirect = mem_size < W5300_BUS_DIRECT_SIZE;