staging: unisys: visornic: handle error return from device registration

There is no code to handle an error return in visornic, when it tries to
register with visorbus. This patch handles an error return from
visorbus_register_visor_driver() by dropping out of initialization.

Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/unisys/visornic/visornic_main.c b/drivers/staging/unisys/visornic/visornic_main.c
index 7b08a8998a6d72e01d87a1f55e8557a52fa9950b..9d3c1e28206240705b74d3913f653be01c4ef6f1 100644 (file)
--- a/drivers/staging/unisys/visornic/visornic_main.c
+++ b/drivers/staging/unisys/visornic/visornic_main.c
@@ -2131,8 +2131,9 @@ static int visornic_init(void)
        if (!dev_num_pool)
                goto cleanup_workqueue;
 
-       visorbus_register_visor_driver(&visornic_driver);
-       return 0;
+       err = visorbus_register_visor_driver(&visornic_driver);
+       if (!err)
+               return 0;
 
 cleanup_workqueue:
        if (visornic_timeout_reset_workqueue) {