Re: [Qemu-devel] [PATCH 1/2] hw/isa/superio: Fix inconsistent use of Chardev->be

[Peter Maydell <peter.maydell@linaro.org>]

On 20 April 2018 at 15:29, Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:
>>>> On 04/20/2018 05:43 AM, Peter Maydell wrote:
>>>> Since we can now safely call serial_mm_init(..., chr=NULL, ...), I'll
>>>> work on simplifying and fixing this.
>>>
>>> Correct. There are a bunch of dubious workarounds in the
>>> codebase which try to handle the problem at different levels,
>>> but we've decided that the right thing is for the NULL pointer
>>> to be dealt with in one place at the bottom (in the qemu_chr_fe_*
>>> functions).
>>
>> OK, I'll happily clean that :)
>
> Hmmm removing the "if (serial_hds[0])" check I reach:
>
> 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;
>     }

Yeah. That check is unnecessary; nothing fails to work if it is
removed. I've got a patch deleting it in my "drop MAX_SERIAL_PORTS"
series.

thanks
-- PMM