eeepc-wmi: depends on BACKLIGHT_CLASS_DEVICE

eeepc-wmi uses backlight*() interfaces so it should depend on
BACKLIGHT_CLASS_DEVICE.

eeepc-wmi.c:(.text+0x2d7f54): undefined reference to `backlight_force_update'
eeepc-wmi.c:(.text+0x2d8012): undefined reference to `backlight_device_register'
eeepc-wmi.c:(.devinit.text+0x1c31c): undefined reference to `backlight_device_unregister'
eeepc-wmi.c:(.devexit.text+0x2f8b): undefined reference to `backlight_device_unregister'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: stable@kernel.org

diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index 6191341..0ec796d 100644 (file)
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -390,6 +390,7 @@ config EEEPC_WMI
        depends on ACPI_WMI
        depends on INPUT
        depends on EXPERIMENTAL
+       depends on BACKLIGHT_CLASS_DEVICE
        select INPUT_SPARSEKMAP
        ---help---
          Say Y here if you want to support WMI-based hotkeys on Eee PC laptops.