Re: [Qemu-devel] [PATCH 01/13] hw/char/serial: Allow disconnected chardevs

[Thomas Huth <thuth@redhat.com>]

On 20.04.2018 16:52, Peter Maydell wrote:
> Currently the serial.c realize code has an explicit check that it is not
> connected to a disconnected backend (ie one with a NULL chardev).
> This isn't what we want -- you should be able to create a serial device
> even if it isn't attached to anything. Remove the check.
> 
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
> ---
>  hw/char/serial.c | 5 -----
>  1 file changed, 5 deletions(-)
> 
> diff --git a/hw/char/serial.c b/hw/char/serial.c
> index eb72191ee7..2c080c9862 100644
> --- a/hw/char/serial.c
> +++ b/hw/char/serial.c
> @@ -923,11 +923,6 @@ static int serial_be_change(void *opaque)
>  
>  void serial_realize_core(SerialState *s, Error **errp)
>  {
> -    if (!qemu_chr_fe_backend_connected(&s->chr)) {
> -        error_setg(errp, "Can't create serial device, empty char device");
> -        return;
> -    }
> -
>      s->modem_status_poll = timer_new_ns(QEMU_CLOCK_VIRTUAL, (QEMUTimerCB *) serial_update_msl, s);
>  
>      s->fifo_timeout_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, (QEMUTimerCB *) fifo_timeout_int, s);
> 

Acked-by: Thomas Huth <thuth@redhat.com>