提交 16fd91e0 编写于 作者: I Ike Panhc 提交者: Matthew Garrett

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: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NIke Panhc <ike.pan@canonical.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>
上级 741bf0c7
......@@ -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"
......
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