Re: [PATCH 25/35] tty: remove tty_operations::chars_in_buffer for non-buffering

[Max Filippov]

On Wed, May 5, 2021 at 2:19 AM Jiri Slaby <jslaby@xxxxxxx> wrote:
>
> The only user of tty_ops::chars_in_buffer is tty_chars_in_buffer. And it
> considers tty_ops::chars_in_buffer optional. In case it's NULL, zero is
> returned. So remove all those chars_in_buffer from tty_ops which return
> zero. (Zero means such driver doesn't buffer.)
>
> Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
> c: Richard Henderson <rth@xxxxxxxxxxx>
> Cc: Ivan Kokshaysky <ink@xxxxxxxxxxxxxxxxxxxx>
> Cc: Matt Turner <mattst88@xxxxxxxxx>
> Cc: "James E.J. Bottomley" <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>
> Cc: Helge Deller <deller@xxxxxx>
> Cc: Chris Zankel <chris@xxxxxxxxxx>
> Cc: Max Filippov <jcmvbkbc@xxxxxxxxx>
> Cc: Heiko Carstens <hca@xxxxxxxxxxxxx>
> Cc: Vasily Gorbik <gor@xxxxxxxxxxxxx>
> Cc: Christian Borntraeger <borntraeger@xxxxxxxxxx>
> ---
>  arch/alpha/kernel/srmcons.c         |  7 -------
>  arch/parisc/kernel/pdc_cons.c       |  6 ------
>  arch/xtensa/platforms/iss/console.c |  7 -------
>  drivers/s390/char/tty3270.c         | 12 ------------
>  drivers/tty/pty.c                   | 17 -----------------
>  drivers/tty/vt/vt.c                 |  6 ------
>  6 files changed, 55 deletions(-)

Acked-by: Max Filippov <jcmvbkbc@xxxxxxxxx> # xtensa

-- 
Thanks.
-- Max