diff --git a/drivers/tty/serdev/core.c b/drivers/tty/serdev/core.c
index df93b727e984ee3d185fa0f5a42cad09d63a3f65..9e59f4788589c879358ce12507362baec459533d 100644
--- a/drivers/tty/serdev/core.c
+++ b/drivers/tty/serdev/core.c
@@ -617,6 +617,7 @@ EXPORT_SYMBOL_GPL(__serdev_device_driver_register);
 static void __exit serdev_exit(void)
 {
 	bus_unregister(&serdev_bus_type);
+	ida_destroy(&ctrl_ida);
 }
 module_exit(serdev_exit);