On Mon, 2013-09-09 at 16:42 +0800, Aaron Lu wrote: > diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c > index f466980..75fba17 100644 > --- a/drivers/gpu/drm/i915/i915_dma.c > +++ b/drivers/gpu/drm/i915/i915_dma.c > @@ -1650,7 +1650,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) > if (INTEL_INFO(dev)->num_pipes) { > /* Must be done after probing outputs */ > intel_opregion_init(dev); > - acpi_video_register(); > + __acpi_video_register(i915_take_over_backlight); > } > > if (IS_GEN5(dev)) I can't compile: DEBUG: drivers/gpu/drm/i915/i915_dma.c: In function 'i915_driver_load': DEBUG: drivers/gpu/drm/i915/i915_dma.c:1661:3: error: implicit declaration of function '__acpi_video_register' [-Werror=implicit-function-declaration] DEBUG: __acpi_video_register(i915_take_over_backlight); DEBUG: ^ DEBUG: cc1: some warnings being treated as errors DEBUG: make[4]: *** [drivers/gpu/drm/i915/i915_dma.o] Error 1 DEBUG: make[3]: *** [drivers/gpu/drm/i915] Error 2 DEBUG: make[2]: *** [drivers/gpu/drm] Error 2 DEBUG: make[1]: *** [drivers/gpu] Error 2 DEBUG: make: *** [drivers] Error 2 -- Igor Gnatenko Fedora release 20 (Heisenbug) Linux 3.11.0-3.fc20.x86_64 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html