return -ENOENT;
        }
 
-       if (devm_request_mem_region(&pdev->dev, res->start,
-                       resource_size(res), CODA_NAME) == NULL) {
-               dev_err(&pdev->dev, "failed to request memory region\n");
-               return -ENOENT;
-       }
-       dev->regs_base = devm_ioremap(&pdev->dev, res->start,
-                                     resource_size(res));
-       if (!dev->regs_base) {
-               dev_err(&pdev->dev, "failed to ioremap address region\n");
-               return -ENOENT;
-       }
+       dev->regs_base = devm_ioremap_resource(&pdev->dev, res);
+       if (IS_ERR(dev->regs_base))
+               return PTR_ERR(dev->regs_base);
 
        /* IRQ */
        irq = platform_get_irq(pdev, 0);