diff --git a/drivers/tty/serial/8250/8250_pnp.c b/drivers/tty/serial/8250/8250_pnp.c
index 6bfdeff5fe22..7decf62400ab 100644
--- a/drivers/tty/serial/8250/8250_pnp.c
+++ b/drivers/tty/serial/8250/8250_pnp.c
@@ -526,12 +526,12 @@ static struct pnp_driver serial_pnp_driver = {
 	.id_table	= pnp_dev_table,
 };
 
-int serial8250_pnp_init(void)
+int __init serial8250_pnp_init(void)
 {
 	return pnp_register_driver(&serial_pnp_driver);
 }
 
-void serial8250_pnp_exit(void)
+void __init_or_module serial8250_pnp_exit(void)
 {
 	pnp_unregister_driver(&serial_pnp_driver);
 }