diff --git a/drivers/staging/comedi/drivers/dyna_pci10xx.c b/drivers/staging/comedi/drivers/dyna_pci10xx.c
index 6821f87a1fbd..064be9aae3aa 100644
--- a/drivers/staging/comedi/drivers/dyna_pci10xx.c
+++ b/drivers/staging/comedi/drivers/dyna_pci10xx.c
@@ -346,7 +346,9 @@ static void dyna_pci10xx_detach(struct comedi_device *dev)
 	if (devpriv)
 		mutex_destroy(&devpriv->mutex);
 	if (pcidev) {
-		comedi_pci_disable(pcidev);
+		if (dev->iobase)
+			comedi_pci_disable(pcidev);
+		pci_dev_put(pcidev);
 	}
 }