[PATCH v2] drivers/firmware: fix SYSFB depends to prevent build failures

[Geert Uytterhoeven]

Hi Javier,

On Tue, Jul 27, 2021 at 1:32 PM Javier Martinez Canillas
<javierm at redhat.com> wrote:
> On 7/27/21 1:17 PM, Geert Uytterhoeven wrote:
> >> Not enabling this, would mean that a platform device to match a driver
> >> supporting the EFI GOP framebuffer (e.g: simple{drm,fb} or efifb) will
> >> not be registered. Which will lead to not having an early framebuffer.
> >
> > Do all (embedded) EFI systems have a frame buffer?
>
> That's a good question. I don't know if all EFI firmwares are expected
> to provide a GOP or not. But even the u-boot EFI stub provides one, if
> video output is supported by u-boot on that system.
>
> > Perhaps SYSFB should be selected by SYSFB_SIMPLEFB, FB_VESA,
> > and FB_EFI?
>
> It's another option, yes. I just thought that the use of select was not
> encouraged and using depends was less fragile / error prone.

Select is very useful for config symbols that are invisible to the user (i.e.
cannot be enabled/disabled manually).

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds