On Tue, Sep 9, 2025, at 15:19, Thomas Zimmermann wrote:
> The option CONFIG_FB_TILEBLITTING is controlled by the user. Selecting
> it from drivers can lead to cyclic dependencies within the config. In
> fbcon, there's special handling for tile blitting, which currently
> cannot be disabled without first disabling the relevant fbdev drivers.
> Fix the Kconfig dependency to make it work.
>
> Some guidelines for using select can be found in the kernel docs at [1].
>
> Signed-off-by: Thomas Zimmermann <tzimmerm...@suse.de>
> Link:
> https://elixir.bootlin.com/linux/v6.16/source/Documentation/kbuild/kconfig-language.rst#L147
>
I did the opposite patch to hide FB_TILEBLITTING from the user
a while ago but never sent that. I still think that is the
better approach, matching what you did with FB_MODE_HELPERS in
patch 2.
Is there any reason I missed why enabling FB_TILEBLITTING is
useful if you don't use one of the four drivers that require it?
Arnd
