On Thu, Oct 4, 2012 at 6:51 AM, Fengguang Wu <fengguang.wu@xxxxxxxxx> wrote: > Hi Luca, > > FYI, kernel build failed on > > tree: git://people.freedesktop.org/~airlied/linux.git drm-next > head: 268d28371cd326be4dfcd7eba5917bf4b9d30c8f > commit: fda4b25c55a59ba12378e4b9e4553f6ea57d802d [139/301] drm/radeon: implement handler for ACPI event > config: ia64-defconfig > > All error/warnings: > > ERROR: "atombios_set_panel_brightness" [drivers/gpu/drm/radeon/radeon.ko] undefined! > ERROR: "backlight_force_update" [drivers/gpu/drm/radeon/radeon.ko] undefined! I'm not sure how to deal with this. The cause for both is that BACKLIGHT_CLASS_DEVICE is not enabled: backlight_force_update is easily fixed, atombios_set_panel_brightness however is removed in following patches. Should I send a patch against drm-next for backlight_force_update (and leave bisecting broken without BACKLIGHT_CLASS_DEVICE) or is it possible to amend this commit before it's merged by Linus? Luca -- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html