The linking is done implicitly by tty_port_register_device_attr_serdev()
few lines below. So drop this explicit tty_port_link_device().

Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
---
 drivers/tty/serial/serial_core.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index f24d8edf1bee..2a6453891801 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -3156,7 +3156,6 @@ static int serial_core_add_one_port(struct uart_driver *drv, struct uart_port *u
 	if (uport->cons && uport->dev)
 		of_console_check(uport->dev->of_node, uport->cons->name, uport->line);
 
-	tty_port_link_device(port, drv->tty_driver, uport->line);
 	uart_configure_port(drv, state, uport);
 
 	port->console = uart_console(uport);
-- 
2.48.1