diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/8250/8250_core.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c index 547afde9fdda..ac88e66df65d 100644 --- a/drivers/tty/serial/8250/8250_core.c +++ b/drivers/tty/serial/8250/8250_core.c @@ -3516,6 +3516,11 @@ static struct uart_8250_port *serial8250_find_match_or_unused(struct uart_port * if (uart_match_port(&serial8250_ports[i].port, port)) return &serial8250_ports[i]; + /* try line number first if still available */ + i = port->line; + if (i < nr_uarts && serial8250_ports[i].port.type == PORT_UNKNOWN && + serial8250_ports[i].port.iobase == 0) + return &serial8250_ports[i]; /* * We didn't find a matching entry, so look for the first * free entry. We look for one which hasn't been previously |