diff --git a/drivers/usb/host/xhci-pci-renesas.c b/drivers/usb/host/xhci-pci-renesas.c
index 5923844ed821..1da647961c25 100644
--- a/drivers/usb/host/xhci-pci-renesas.c
+++ b/drivers/usb/host/xhci-pci-renesas.c
@@ -207,7 +207,8 @@ static int renesas_check_rom_state(struct pci_dev *pdev)
 			return 0;
 
 		case RENESAS_ROM_STATUS_NO_RESULT: /* No result yet */
-			return 0;
+			dev_dbg(&pdev->dev, "Unknown ROM status ...\n");
+			break;
 
 		case RENESAS_ROM_STATUS_ERROR: /* Error State */
 		default: /* All other states are marked as "Reserved states" */
@@ -224,13 +225,12 @@ static int renesas_fw_check_running(struct pci_dev *pdev)
 	u8 fw_state;
 	int err;
 
-	/* Check if device has ROM and loaded, if so skip everything */
-	err = renesas_check_rom(pdev);
-	if (err) { /* we have rom */
-		err = renesas_check_rom_state(pdev);
-		if (!err)
-			return err;
-	}
+	/*
+	 * Only if device has ROM and loaded FW we can skip loading and
+	 * return success. Otherwise (even unknown state), attempt to load FW.
+	 */
+	if (renesas_check_rom(pdev) && !renesas_check_rom_state(pdev))
+		return 0;
 
 	/*
 	 * Test if the device is actually needing the firmware. As most