On Fri, 26 Jan 2018, Randy Dunlap <rdunlap@xxxxxxxxxxxxx> wrote: > On 01/25/2018 06:58 PM, Stephen Rothwell wrote: >> Hi all, >> >> Changes since 20180119: >> > > on x86_64: > drivers/gpu/drm/i915/intel_panel.o: In function `intel_backlight_device_register': > intel_panel.c:(.text+0x28d4): undefined reference to `backlight_device_register' > drivers/gpu/drm/i915/intel_panel.o: In function `intel_backlight_device_unregister': > intel_panel.c:(.text+0x2991): undefined reference to `backlight_device_unregister' > > when CONFIG_BACKLIGHT_CLASS_DEVICE=m > and CONFIG_DRM_I915=y I don't deny there's an issue with i915 selecting CONFIG_BACKLIGHT_CLASS_DEVICE. I'm afraid previous attempts at fixing that have been a rabbit hole; new config errors pop up elsewhere. [citation needed]. That said, I thought we had enough duct tape in the Kconfig to keep the issues at bay. Since you're replying to linux-next, are you saying this is new? I wonder if something's changed elsewhere. BR, Jani. -- Jani Nikula, Intel Open Source Technology Center -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html