staging: unisys: visornic: don't destroy global workqueues until devs destroyed

visornic_cleanup() was previously incorrectly destroying its global
workqueues prior to cleaning up the devices which used them.  This patch
corrects the order of these operations.

Signed-off-by: Tim Sell <Timothy.Sell@unisys.com>
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 ba46053..14977ad 100644 (file)
--- a/drivers/staging/unisys/visornic/visornic_main.c
+++ b/drivers/staging/unisys/visornic/visornic_main.c
@@ -2241,6 +2241,8 @@ cleanup_debugfs:
  */
 static void visornic_cleanup(void)
 {
+       visorbus_unregister_visor_driver(&visornic_driver);
+
        if (visornic_serverdown_workqueue) {
                flush_workqueue(visornic_serverdown_workqueue);
                destroy_workqueue(visornic_serverdown_workqueue);
@@ -2251,7 +2253,6 @@ static void visornic_cleanup(void)
        }
        debugfs_remove_recursive(visornic_debugfs_dir);
 
-       visorbus_unregister_visor_driver(&visornic_driver);
        kfree(dev_num_pool);
        dev_num_pool = NULL;
 }