diff --git a/drivers/usb/gadget/udc/r8a66597-udc.c b/drivers/usb/gadget/udc/r8a66597-udc.c
index 896c1a016d55..65cae4883454 100644
--- a/drivers/usb/gadget/udc/r8a66597-udc.c
+++ b/drivers/usb/gadget/udc/r8a66597-udc.c
@@ -1849,6 +1849,8 @@ static int r8a66597_probe(struct platform_device *pdev)
 		return PTR_ERR(reg);
 
 	ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+	if (!ires)
+		return -EINVAL;
 	irq = ires->start;
 	irq_trigger = ires->flags & IRQF_TRIGGER_MASK;