Re: [PATCH 30/30] fbdev: Make support for userspace interfaces configurable

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Hi

Am 09.06.23 um 11:14 schrieb Geert Uytterhoeven:
[...]

What do you think low-end embedded devices with an out-of-tree[*]
fbdev driver are using?

And those do not count either. IIRC Android used to be built on top of
fbdev devices. I'm not sure if they have moved to DRM by now. But
embedded uses dedicated kernels and kernel configs.  It's easy for them
to set FB_DEVICE=y.  We're not going to take away the fbdev device entirely.

The point is that we do not suddenly disable functionality that users
may depend on. While "make oldconfig" will show users the new
FB_DEVICE question, (and hopefully they'll notice), "make olddefconfig"
and "make <foo>_defconfig" won't, possibly causing regressions.
Without a suitable default, you should IMHO at least update all
defconfigs that enable any fbdev drivers.

Didn't I already say that we should make it "default y" if that's preferable in practice?

Best regards
Thomas


I guess you do remember the fall-out from f611b1e7624ccdbd ("drm:
Avoid circular dependencies for CONFIG_FB"), after which lots of defconfigs
had to gain CONFIG_FB=y?

Gr{oetje,eeting}s,

                         Geert


--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)

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