-+ ret = request_irq(AR531X_MISC_IRQ_WATCHDOG, ar2315_wdt_interrupt,
-+ IRQF_DISABLED, DRIVER_NAME, dev);
++ if (wdt_base)
++ return -EBUSY;
++
++ irq_res = platform_get_resource(dev, IORESOURCE_IRQ, 0);
++ if (!irq_res) {
++ dev_err(&dev->dev, "no IRQ resource\n");
++ return -ENOENT;
++ }
++
++ mem_res = platform_get_resource(dev, IORESOURCE_MEM, 0);
++ wdt_base = devm_ioremap_resource(&dev->dev, mem_res);
++ if (IS_ERR(wdt_base))
++ return PTR_ERR(wdt_base);
++
++ ret = devm_request_irq(&dev->dev, irq_res->start, ar2315_wdt_interrupt,
++ IRQF_DISABLED, DRIVER_NAME, dev);