parport: fix error handling

After registering the device if exclusive access fails for any reason
then we need to unregister the device to remove all references.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/parport/share.c b/drivers/parport/share.c
index 8067f54..d8079e3 100644 (file)
--- a/drivers/parport/share.c
+++ b/drivers/parport/share.c
@@ -907,7 +907,8 @@ parport_register_dev_model(struct parport *port, const char *name,
                        spin_unlock(&port->physport->pardevice_lock);
                        pr_debug("%s: cannot grant exclusive access for device %s\n",
                                 port->name, name);
-                       goto err_put_dev;
+                       device_unregister(&par_dev->dev);
+                       goto err_put_port;
                }
                port->flags |= PARPORT_FLAG_EXCL;
        }