From: "Antonino A. Daplas" , Andrew Zabolotny LD init/built-in.o LD .tmp_vmlinux1 drivers/built-in.o(.text+0x9bfa): In function `lcd_device_register': : undefined reference to `fb_register_client' drivers/built-in.o(.text+0x9ce3): In function `lcd_device_unregister': : undefined reference to `fb_unregister_client' drivers/built-in.o(.text+0xa16a): In function `backlight_device_register': : undefined reference to `fb_register_client' drivers/built-in.o(.text+0xa253): In function `backlight_device_unregister': : undefined reference to `fb_unregister_client' make: *** [.tmp_vmlinux1] Error 1 Signed-off-by: Antonino Daplas Signed-off-by: Andrew Morton --- 25-akpm/drivers/video/Kconfig | 2 +- 25-akpm/drivers/video/backlight/Kconfig | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff -puN drivers/video/backlight/Kconfig~backlight-fix-compile-error-if-config_fb-is-unset drivers/video/backlight/Kconfig --- 25/drivers/video/backlight/Kconfig~backlight-fix-compile-error-if-config_fb-is-unset Tue Jan 18 15:07:21 2005 +++ 25-akpm/drivers/video/backlight/Kconfig Tue Jan 18 15:07:21 2005 @@ -11,6 +11,7 @@ menuconfig BACKLIGHT_LCD_SUPPORT config BACKLIGHT_CLASS_DEVICE tristate "Lowlevel Backlight controls" depends on BACKLIGHT_LCD_SUPPORT + default m help This framework adds support for low-level control of the LCD backlight. This includes support for brightness and power. @@ -26,6 +27,7 @@ config BACKLIGHT_DEVICE config LCD_CLASS_DEVICE tristate "Lowlevel LCD controls" depends on BACKLIGHT_LCD_SUPPORT + default m help This framework adds support for low-level control of LCD. Some framebuffer devices connect to platform-specific LCD modules diff -puN drivers/video/Kconfig~backlight-fix-compile-error-if-config_fb-is-unset drivers/video/Kconfig --- 25/drivers/video/Kconfig~backlight-fix-compile-error-if-config_fb-is-unset Tue Jan 18 15:07:21 2005 +++ 25-akpm/drivers/video/Kconfig Tue Jan 18 15:07:21 2005 @@ -1107,7 +1107,7 @@ if FB || SGI_NEWPORT_CONSOLE source "drivers/video/logo/Kconfig" endif -if SYSFS +if FB && SYSFS source "drivers/video/backlight/Kconfig" endif _