staging: comedi: cb_pcimdda: fix bug in call to subdev_8255_cleanup

The attach function only allocated 2 subdevices, an analog output sundevice (index 0) and the 8255 dio subdevice (index 1). The detach function is passing the wrong subdevice (index 2) to the subdev_8255_cleanup function which will result in a bug when it tries to do the kfree(s->private).

---
 drivers/staging/comedi/drivers/cb_pcimdda.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index b10831d..99a6160 100644
@@ -257,7 +257,7 @@ static void cb_pcimdda_detach(struct comedi_device *dev)
 	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
 
 	if (dev->subdevices)
-		subdev_8255_cleanup(dev, dev->subdevices + 2);
+		subdev_8255_cleanup(dev, dev->subdevices + 1);
 	if (pcidev) {
 		if (dev->iobase)
 			comedi_pci_disable(pcidev);

1.7.11