On 1/24/22 12:33, Thomas Zimmermann wrote:

[snip]

quoted

Thoughts?

I can't say I approve keeping fbdev alive, but...

With fbdev emulation, every DRM driver is an fbdev driver too. So 
CONFIG_FB_DRIVER is somewhat misleading. Better add an option like 
CONFIG_FBCON_HW_SCROLLING and have it selected by the fbdev drivers that 
absolutely need HW acceleration. That option would then protect the rsp 
code.

Agreed that this option would be better and allow distros
to disable the code that was reverted.
 
Best regards,
-- 
Javier Martinez Canillas
Linux Engineering
Red Hat