On Wed, 11 Jul 2018 19:56:02 +0200
Daniel Vetter [off-list ref] wrote:

quoted

Have you seen Steven's suggestion which he send about the same time
as your mail I'm replying to here ? I personally think that doing
something like that makes sense (for as long as we have the need
for the lockless_fb_register debug hack).

Note I've 2 patches ready to go to only fix this in fbcon.c, but I
think a more thorough fix makes sense.  

Yeah Steven's suggestion looks reasonable to fix this all for good.
The #if 1 predates git history, so no idea why it was added or by whom
:-)

I just sent the patch. If the printk maintainers take it, then you can
update the fb driver to set the ignore_console_lock_warning when
lockless_fb_register is set.

-- Steve