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authorIke Panhc <ike.pan@canonical.com>2013-02-22 16:48:40 +0800
committerMatthew Garrett <matthew.garrett@nebula.com>2013-02-27 08:30:47 -0500
commit16fd91e06291c964111587db15646308110c5634 (patch)
tree2de5f4f358ee4e35662b551b271fba978fd266a4 /drivers/platform/x86
parent741bf0c7be835d7fdecac5d942e88b5d43958f40 (diff)
downloadlinux-linaro-stable-16fd91e06291c964111587db15646308110c5634.tar.gz
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 <fengguang.wu@intel.com> Signed-off-by: Ike Panhc <ike.pan@canonical.com> Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
Diffstat (limited to 'drivers/platform/x86')
-rw-r--r--drivers/platform/x86/Kconfig4
1 files changed, 3 insertions, 1 deletions
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"