staging: comedi: don't check driver->auto_attach

There is no need for `comedi_pci_auto_config()` and
`comedi_usb_auto_config()` to check that `driver->auto_attach` is
non-null before calling `comedi_auto_attach()` as this check is done by
`comedi_auto_config()` itself (actually by
`comedi_auto_config_wrapper()`).  Remove the unnecessary checks.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers.c

@@ -949,11 +949,7 @@ EXPORT_SYMBOL_GPL(comedi_pci_disable);
 
 int comedi_pci_auto_config(struct pci_dev *pcidev, struct comedi_driver *driver)
 {
-
-	if (driver->auto_attach)
-		return comedi_auto_config(&pcidev->dev, driver, 0);
-	else
-		return -EINVAL;
+	return comedi_auto_config(&pcidev->dev, driver, 0);
 }
 EXPORT_SYMBOL_GPL(comedi_pci_auto_config);
 
@@ -1000,10 +996,7 @@ int comedi_usb_auto_config(struct usb_interface *intf,
 			   struct comedi_driver *driver)
 {
 	BUG_ON(intf == NULL);
-	if (driver->auto_attach)
-		return comedi_auto_config(&intf->dev, driver, 0);
-	else
-		return -EINVAL;
+	return comedi_auto_config(&intf->dev, driver, 0);
 }
 EXPORT_SYMBOL_GPL(comedi_usb_auto_config);