staging: axis-fifo: add error handling of class_create()

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/axis-fifo/axis-fifo.c b/drivers/staging/axis-fifo/axis-fifo.c
index abeee0e..63c8efd 100644 (file)
--- a/drivers/staging/axis-fifo/axis-fifo.c
+++ b/drivers/staging/axis-fifo/axis-fifo.c
@@ -1089,6 +1089,8 @@ static int __init axis_fifo_init(void)
        pr_info("axis-fifo driver loaded with parameters read_timeout = %i, write_timeout = %i\n",
                read_timeout, write_timeout);
        axis_fifo_driver_class = class_create(THIS_MODULE, DRIVER_NAME);
+       if (IS_ERR(axis_fifo_driver_class))
+               return PTR_ERR(axis_fifo_driver_class);
        return platform_driver_register(&axis_fifo_driver);
 }