On Tue, 25 Oct 2022, Akihiko Odaki [off-list ref] wrote:

That aside, the first patch in this series can be applied without the 
later patches so you may have a look at it. It's fine if you don't merge 
it though since it does not fix really a pragmatic bug as its message says.

I think it's problematic because it needlessly ties i915 backlight
operation to existence of backlight devices that may not be related to
Intel GPU at all. The direction should be multiple supported backlight
devices, across GPUs and connectors, but only one per display.

BR,
Jani.


-- 
Jani Nikula, Intel Open Source Graphics Center