On Mon, 17 Aug 2015, Taichi Kageyama wrote: > diff --git tty-next.org/drivers/tty/serial/8250/8250_port.c tty-next.work/drivers/tty/serial/8250/8250_port.c > index 54e6c8d..9300b59 100644 > --- tty-next.org/drivers/tty/serial/8250/8250_port.c > +++ tty-next.work/drivers/tty/serial/8250/8250_port.c > @@ -1238,6 +1238,9 @@ static void autoconfig_irq(struct uart_8250_port *up) > inb_p(ICP); > } > > + if (uart_console(port)) > + console_lock(); > + > /* forget possible initially masked and pending IRQ */ > probe_irq_off(probe_irq_on()); > save_mcr = serial_in(up, UART_MCR); > @@ -1269,6 +1272,9 @@ static void autoconfig_irq(struct uart_8250_port *up) > if (port->flags & UPF_FOURPORT) > outb_p(save_ICP, ICP); > > + if (uart_console(port)) > + console_unlock(); > + > port->irq = (irq > 0) ? irq : 0; > } Reviewed-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html