drm: shmobile: Add dependency on BACKLIGHT_CLASS_DEVICE
The driver registers a backlight device and thus requires
BACKLIGHT_CLASS_DEVICE to be selected to avoid compilation breakages.
Cc: stable@vger.kernel.org
Reported-by: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/shmobile/Kconfig b/drivers/gpu/drm/shmobile/Kconfig
index d137286..2ee44ca 100644
--- a/drivers/gpu/drm/shmobile/Kconfig
+++ b/drivers/gpu/drm/shmobile/Kconfig
@@ -1,6 +1,7 @@
config DRM_SHMOBILE
tristate "DRM Support for SH Mobile"
depends on DRM && (ARM || SUPERH)
+ select BACKLIGHT_CLASS_DEVICE
select DRM_KMS_HELPER
select DRM_KMS_FB_HELPER
select DRM_KMS_CMA_HELPER