From: Randy Dunlap <randy.dunlap@xxxxxxxxxx> compal-laptop uses power_supply interfaces so it should depend on POWER_SUPPLY. ERROR: "power_supply_register" [drivers/platform/x86/compal-laptop.ko] undefined! ERROR: "power_supply_unregister" [drivers/platform/x86/compal-laptop.ko] undefined! Signed-off-by: Randy Dunlap <randy.dunlap@xxxxxxxxxx> Cc: Cezary Jackiewicz <cezary.jackiewicz@xxxxxxxxx> Cc: Matthew Garrett <mjg@xxxxxxxxxx> Cc: platform-driver-x86@xxxxxxxxxxxxxxx --- drivers/platform/x86/Kconfig | 1 + 1 file changed, 1 insertion(+) --- linux-next-20100723.orig/drivers/platform/x86/Kconfig +++ linux-next-20100723/drivers/platform/x86/Kconfig @@ -183,6 +183,7 @@ config COMPAL_LAPTOP depends on BACKLIGHT_CLASS_DEVICE depends on RFKILL depends on HWMON + depends on POWER_SUPPLY ---help--- This is a driver for laptops built by Compal: -- To unsubscribe from this list: send the line "unsubscribe platform-driver-x86" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html