Re: [PATCH 0/2] braille: nbcon: Allow using a serial driver converted to nbcon API as a Braille console

[John Ogness]

On 2026-09-25, Petr Mladek <pmladek@xxxxxxxx> wrote:
>> > This shows that braille_write() is called form printk() even when
>> > braille_co is not in console_list. It is called via vt_console_print()
>> > because the graphical console driver (ttyX) is registered.
>> 
>> But isn't that a bug? I thought Braille consoles were not supposed to be
>> handled by printk(). Even in this new series you added that exact
>> comment.
>
> I believe that it is not a bug. I understand it the way that the
> Braille device should show everything that is shown on the virtual
> terminal. It should show the printk() messages when they are
> printed there by the related console driver.
>
> It is just that printk() is only one source of messages shown
> on the terminal. The vt code maintains what is displayed.

But how do you register "the terminal" so that printk messages appear
there?

John