1 diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
2 index d75f8c7..49e0930 100644
3 --- a/drivers/serial/8250.c
4 +++ b/drivers/serial/8250.c
5 @@ -1696,6 +1696,7 @@ static int serial_link_irq_chain(struct uart_8250_port *up)
7 spin_unlock_irq(&i->lock);
8 irq_flags |= up->port.irqflags;
9 + printk("request_irq %d %d %p\n", irq_flags, up->port.irq, i);
10 ret = request_irq(up->port.irq, serial8250_interrupt,
11 irq_flags, "serial", i);