Hi, On Sat, Jul 10, 2021 at 3:29 AM <rajeevny@xxxxxxxxxxxxxx> wrote: > > > @@ -209,18 +208,11 @@ static inline int > > of_drm_get_panel_orientation(const struct device_node *np, > > #if IS_ENABLED(CONFIG_DRM_PANEL) && > > (IS_BUILTIN(CONFIG_BACKLIGHT_CLASS_DEVICE) || \ > > (IS_MODULE(CONFIG_DRM) && IS_MODULE(CONFIG_BACKLIGHT_CLASS_DEVICE))) > > Thanks, for the fix. Changes look good to me. I checked this on Trogdor > Lazor device. > > I have one small doubt, shouldn't we add above (or similar) check around > drm_panel_dp_aux_backlight() in drm_dp_helper source & header files? > This function is using devm_backlight_device_register() that needs > CONFIG_BACKLIGHT_CLASS_DEVICE for compilation. > > If that's not an issue, > Reviewed-by: Rajeev Nandan <rajeevny@xxxxxxxxxxxxxx> Indeed you are correct. I tried trying off the CONFIG_BACKLIGHT_CLASS_DEVICE and it was unhappy. I've posted a v2 which I think fixes this [1]. I left your review tag off to give you a chance to confirm I didn't goof anything else up in the v2. Thanks! [1] https://lore.kernel.org/lkml/20210712075933.v2.1.I23eb4cc5a680341e7b3e791632a635566fa5806a@changeid/ -Doug