staging/xillybus: Handle OOM in xillybus_init()

alloc_workqueue() can fail and returns NULL in case of
OOM.
Handle this case and undo class_create().

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/xillybus/xillybus_core.c b/drivers/staging/xillybus/xillybus_core.c
index 2ebaf16..b0a6696 100644 (file)
--- a/drivers/staging/xillybus/xillybus_core.c
+++ b/drivers/staging/xillybus/xillybus_core.c
@@ -2318,8 +2318,12 @@ static int __init xillybus_init(void)
        }
 
        xillybus_wq = alloc_workqueue(xillyname, 0, 0);
+       if (!xillybus_wq) {
+               class_destroy(xillybus_class);
+               rc = -ENOMEM;
+       }
 
-       return 0; /* Success */
+       return rc;
 }
 
 static void __exit xillybus_exit(void)