4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Johan Hovold <johan@xxxxxxxxxx> commit bc6cf3669d22371f573ab0305b3abf13887c0786 upstream. Make sure to free all resources associated with the ida on module exit. Fixes: cd6484e1830b ("serdev: Introduce new bus for serial attached devices") Cc: stable <stable@xxxxxxxxxxxxxxx> # 4.11 Signed-off-by: Johan Hovold <johan@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/tty/serdev/core.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/tty/serdev/core.c +++ b/drivers/tty/serdev/core.c @@ -482,6 +482,7 @@ EXPORT_SYMBOL_GPL(__serdev_device_driver static void __exit serdev_exit(void) { bus_unregister(&serdev_bus_type); + ida_destroy(&ctrl_ida); } module_exit(serdev_exit);