res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- dp->reg_base = devm_request_and_ioremap(&pdev->dev, res);
- if (!dp->reg_base) {
- dev_err(&pdev->dev, "failed to ioremap\n");
- return -ENOMEM;
- }
+ dp->reg_base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(dp->reg_base))
+ return PTR_ERR(dp->reg_base);
dp->irq = platform_get_irq(pdev, 0);
if (dp->irq == -ENXIO) {