Hi Jani. > As I wrote in [1], this allows a configuration that builds and links, > but is silently broken. You won't get backlight support in drm panel > which would be a reasonable expectation with > CONFIG_BACKLIGHT_CLASS_DEVICE=m. Agreed - it needs to be improved. But right now we had to fix the build breakage. http://lore.kernel.org/r/1413580403-16225-1-git-send-email-jani.nikula@xxxxxxxxx is added to my TODO list. May take a stamp on this over xmas. Sam