From: Arnd Bergmann <arnd@xxxxxxxx>
The driver now uses the backlight interface, which breaks when that
is disabled:
ld.lld: error: undefined symbol: devm_backlight_device_register
Enforce the necessary Kconfig dependency to avoid this.
Fixes: c2268daa65fb4 ("drm/panel: ld9040: Register a backlight device")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
drivers/gpu/drm/panel/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index e8c9f4613a4b4..b097b2507ac5b 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -300,6 +300,7 @@ config DRM_PANEL_LEADTEK_LTK500HD1829
config DRM_PANEL_SAMSUNG_LD9040
tristate "Samsung LD9040 RGB/SPI panel"
depends on OF && SPI
+ depends on BACKLIGHT_CLASS_DEVICE
select VIDEOMODE_HELPERS
config DRM_PANEL_LG_LB035Q02
--
2.39.2
