From 16fd91e06291c964111587db15646308110c5634 Mon Sep 17 00:00:00 2001 From: Ike Panhc Date: Fri, 22 Feb 2013 16:48:40 +0800 Subject: ideapad: depends on backlight subsystem and update comment I've got a report of build failure on ideapad-laptop, which shows drivers/built-in.o: In function `ideapad_acpi_notify': ideapad-laptop.c:(.text+0x63876a): undefined reference to `backlight_force_update' drivers/built-in.o: In function `ideapad_acpi_remove': ideapad-laptop.c:(.devexit.text+0x64a7): undefined reference to `backlight_device_unregister' drivers/built-in.o: In function `ideapad_acpi_add': ideapad-laptop.c:(.devinit.text+0x45e28): undefined reference to `backlight_device_register' To select backlight subsystem can prevent this error from happening. Also update comment for this driver. Reported-by: Fengguang Wu Signed-off-by: Ike Panhc Signed-off-by: Matthew Garrett --- drivers/platform/x86/Kconfig | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index 585db6fa64b8..242c5248fdea 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -300,8 +300,10 @@ config IDEAPAD_LAPTOP depends on RFKILL && INPUT depends on SERIO_I8042 select INPUT_SPARSEKMAP + select BACKLIGHT_CLASS_DEVICE help - This is a driver for the rfkill switches on Lenovo IdeaPad netbooks. + This is a driver for Lenovo IdeaPad netbooks contains drivers for + rfkill switch, hotkey, fan control and backlight control. config THINKPAD_ACPI tristate "ThinkPad ACPI Laptop Extras" -- cgit v1.2.3