If CONFIG_ACPI=n and CONFIG_BACKLIGHT_CLASS_DEVICE=m, compilation complains with undefined references: drivers/gpu/drm/i915/display/intel_panel.o: In function `intel_backlight_device_register': intel_panel.c:(.text+0x4dd9): undefined reference to `backlight_device_register' drivers/gpu/drm/i915/display/intel_panel.o: In function `intel_backlight_device_unregister': intel_panel.c:(.text+0x4e96): undefined reference to `backlight_device_unregister' This patch select BACKLIGHT_CLASS_DEVICE directly. Reported-by: Hulk Robot <hulkci@xxxxxxxxxx> Signed-off-by: Chen Zhou <chenzhou10@xxxxxxxxxx> --- drivers/gpu/drm/i915/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig index ba95959..6b69dab 100644 --- a/drivers/gpu/drm/i915/Kconfig +++ b/drivers/gpu/drm/i915/Kconfig @@ -16,7 +16,7 @@ config DRM_I915 select IRQ_WORK # i915 depends on ACPI_VIDEO when ACPI is enabled # but for select to work, need to select ACPI_VIDEO's dependencies, ick - select BACKLIGHT_CLASS_DEVICE if ACPI + select BACKLIGHT_CLASS_DEVICE select INPUT if ACPI select ACPI_VIDEO if ACPI select ACPI_BUTTON if ACPI -- 2.7.4 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
