serial8250_init_port() assings 0xFF for the unset or unknown port IO type, use predefined constant for that instead. Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> --- drivers/tty/serial/8250/8250_port.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c index 4d63d80e78a9..1003516097df 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -3249,7 +3249,7 @@ void serial8250_init_port(struct uart_8250_port *up) port->ops = &serial8250_pops; port->has_sysrq = IS_ENABLED(CONFIG_SERIAL_8250_CONSOLE); - up->cur_iotype = 0xFF; + up->cur_iotype = UPIO_UNKNOWN; } EXPORT_SYMBOL_GPL(serial8250_init_port); -- 2.43.0.rc1.1336.g36b5255a03ac