[BUG] 2.6.30-rc4: compile fail with CONFIG_DRM_I915=y

[Lee <lee-in-berlin@web.de>]

Hi list,

compiling 2.6.30-rc4 with following options will result in an compile error:

CONFIG_DRM_I915=y
CONFIG_ACPI_VIDEO=m


drivers/video/backlight/backlight.c: In function ‘backlight_device_register’:
drivers/video/backlight/backlight.c:247: warning: format not a string literal 
and no format arguments
drivers/video/output.c: In function ‘video_output_register’:
drivers/video/output.c:99: warning: format not a string literal and no format 
arguments
drivers/usb/storage/libusual.c: In function ‘usu_probe_thread’:
drivers/usb/storage/libusual.c:159: warning: format not a string literal and 
no format arguments
drivers/built-in.o: In function `intel_opregion_free':
(.text+0xaf051): undefined reference to `acpi_video_exit'
drivers/built-in.o: In function `intel_opregion_init':
(.text+0xaf411): undefined reference to `acpi_video_register'
make[1]: *** [.tmp_vmlinux1] Error 1
make[1]: Leaving directory `/home/randall/kernel-source'
make: *** [debian/stamp/build/kernel] Error 2

Compiling the kernel with both options as module or both options built-in 
results in a working kernel.

Kind regards,
Lee