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 7b08a89..9d3c1e2 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) {