The patch titled
backlight users need to select BACKLIGHT_CLASS_DEVICE
has been added to the -mm tree. Its filename is
add-support-for-the-generic-backlight-device-to-the-ibm-acpi-driver-fix-2.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: backlight users need to select BACKLIGHT_CLASS_DEVICE
From: Andy Whitcroft <apw@xxxxxxxxxxxx>
When compiling 2.6.19-rc2-mm1 we get the following link failures:
drivers/built-in.o(.init.text+0x3076): In function `toshiba_acpi_init':
: undefined reference to `backlight_device_register'
drivers/built-in.o(.exit.text+0x170): In function `toshiba_acpi_exit':
: undefined reference to `backlight_device_unregister'
When we build an ACPI module which provides backlight support we need to
ensure that the backlight class device is selected.
Signed-off-by: Andy Whitcroft <apw@xxxxxxxxxxxx>
Cc: Holger Macht <hmacht@xxxxxxx>
Cc: "Brown, Len" <len.brown@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
drivers/acpi/Kconfig | 2 +-
1 files changed, 1 insertion(+), 1 deletion(-)
diff -puN drivers/acpi/Kconfig~add-support-for-the-generic-backlight-device-to-the-ibm-acpi-driver-fix-2 drivers/acpi/Kconfig
--- a/drivers/acpi/Kconfig~add-support-for-the-generic-backlight-device-to-the-ibm-acpi-driver-fix-2
+++ a/drivers/acpi/Kconfig
@@ -207,7 +207,7 @@ config ACPI_ASUS
config ACPI_IBM
tristate "IBM ThinkPad Laptop Extras"
depends on X86
- select BACKLIGHT_DEVICE
+ select BACKLIGHT_CLASS_DEVICE
---help---
This is a Linux ACPI driver for the IBM ThinkPad laptops. It adds
support for Fn-Fx key combinations, Bluetooth control, video
_
Patches currently in -mm which might be from apw@xxxxxxxxxxxx are
add-support-for-the-generic-backlight-device-to-the-ibm-acpi-driver-fix-2.patch
add-support-for-the-generic-backlight-device-to-the-asus-acpi-driver-fix.patch
add-support-for-the-generic-backlight-device-to-the-toshiba-acpi-driver-fix.patch
get-rid-of-zone_table.patch
deal-with-cases-of-zone_dma-meaning-the-first-zone.patch
get-rid-of-zone_table-fix-3.patch
optional-zone_dma-in-the-vm.patch
zoneid-fix-up-calculations-for-zoneid_pgshift.patch
-
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