samsung-laptop: fix config build error

rddunlap · Matthew Garrett · commit 5ff67df324e8 · 2013-09-05T08:52:27.000-04:00
Fix build failure when ACPI_VIDEO=m and SAMSUNG_LAPTOP=y.
The patch prevents that specific config combination.

drivers/built-in.o: In function `samsung_init':
samsung-laptop.c:(.init.text+0x128ff): undefined reference to `acpi_video_unregister'

Signed-off-by: Randy Dunlap &lt;rdunlap@infradead.org&gt;
Reported-by: Randy Dunlap &lt;rdunlap@infradead.org&gt;
Reported-by: Fengguang Wu &lt;fengguang.wu@intel.com&gt;
Cc: Corentin Chary &lt;corentin.chary@gmail.com&gt;

build testing:
ACPI_VIDEO=m, SAMSUNG_LAPTOP=m: OK
ACPI_VIDEO=y, SAMSUNG_LAPTOP=m: OK
ACPI_VIDEO=y, SAMSUNG_LAPTOP=y: OK
ACPI=n, SAMSUNG_LAPTOP=y: OK
ACPI=n, SAMSUNG_LAPTOP=m: OK
Signed-off-by: Matthew Garrett &lt;matthew.garrett@nebula.com&gt;
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
@@ -732,6 +732,7 @@ config SAMSUNG_LAPTOP
 	tristate "Samsung Laptop driver"
 	depends on X86
 	depends on RFKILL || RFKILL = n
+	depends on ACPI_VIDEO || ACPI_VIDEO = n
 	depends on BACKLIGHT_CLASS_DEVICE
 	select LEDS_CLASS
 	select NEW_LEDS
