return 0;
 }
 
-static unsigned long pci_dio_override_cardtype(struct pci_dev *pcidev,
-                                              unsigned long cardtype)
-{
-       /*
-        * Change cardtype from TYPE_PCI1753 to TYPE_PCI1753E if expansion
-        * board available.  Need to enable PCI device and request the main
-        * registers PCI BAR temporarily to perform the test.
-        */
-       if (cardtype != TYPE_PCI1753)
-               return cardtype;
-       if (pci_enable_device(pcidev) < 0)
-               return cardtype;
-       if (pci_request_region(pcidev, 2, "adv_pci_dio") == 0) {
-               /*
-                * This test is based on Advantech's "advdaq" driver source
-                * (which declares its module licence as "GPL" although the
-                * driver source does not include a "COPYING" file).
-                */
-               unsigned long reg = pci_resource_start(pcidev, 2) + 53;
-
-               outb(0x05, reg);
-               if ((inb(reg) & 0x07) == 0x02) {
-                       outb(0x02, reg);
-                       if ((inb(reg) & 0x07) == 0x05)
-                               cardtype = TYPE_PCI1753E;
-               }
-               pci_release_region(pcidev, 2);
-       }
-       pci_disable_device(pcidev);
-       return cardtype;
-}
-
 static int pci_dio_auto_attach(struct comedi_device *dev,
                               unsigned long context)
 {
        .detach         = comedi_pci_detach,
 };
 
+static unsigned long pci_dio_override_cardtype(struct pci_dev *pcidev,
+                                              unsigned long cardtype)
+{
+       /*
+        * Change cardtype from TYPE_PCI1753 to TYPE_PCI1753E if expansion
+        * board available.  Need to enable PCI device and request the main
+        * registers PCI BAR temporarily to perform the test.
+        */
+       if (cardtype != TYPE_PCI1753)
+               return cardtype;
+       if (pci_enable_device(pcidev) < 0)
+               return cardtype;
+       if (pci_request_region(pcidev, 2, "adv_pci_dio") == 0) {
+               /*
+                * This test is based on Advantech's "advdaq" driver source
+                * (which declares its module licence as "GPL" although the
+                * driver source does not include a "COPYING" file).
+                */
+               unsigned long reg = pci_resource_start(pcidev, 2) + 53;
+
+               outb(0x05, reg);
+               if ((inb(reg) & 0x07) == 0x02) {
+                       outb(0x02, reg);
+                       if ((inb(reg) & 0x07) == 0x05)
+                               cardtype = TYPE_PCI1753E;
+               }
+               pci_release_region(pcidev, 2);
+       }
+       pci_disable_device(pcidev);
+       return cardtype;
+}
+
 static int adv_pci_dio_pci_probe(struct pci_dev *dev,
                                 const struct pci_device_id *id)
 {