[PATCH 2/3] drm: rcar-du: DRM_RCAR_USE_LVDS should depend on DRM_RCAR_DU

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The Renesas R-Car LVDS encoder driver is a subdriver of the R-Car
Display Unit driver, and enabling DRM_RCAR_USE_LVDS while DRM_RCAR_DU is
disabled doesn't have any impact on the kernel built.  Hence add a
dependency on DRM_RCAR_DU, to prevent asking the user about this driver
when configuring a kernel without R-Car Display Unit support, like is
already done for DRM_RCAR_CMM.

Fixes: 42d95d1b3a9c649b ("drm/rcar: stop using 'imply' for dependencies")
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
The problem pre-existed before commit 42d95d1b3a9c649b, as the
dependency of DRM_RCAR_LVDS on DRM_RCAR_DU was accidentally removed
before.
Fixes: c6a27fa41fabb35f ("drm: rcar-du: Convert LVDS encoder code to bridge driver")
---
 drivers/gpu/drm/rcar-du/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/rcar-du/Kconfig b/drivers/gpu/drm/rcar-du/Kconfig
index 65d72be50f46f19e..a7aa556e301d1087 100644
--- a/drivers/gpu/drm/rcar-du/Kconfig
+++ b/drivers/gpu/drm/rcar-du/Kconfig
@@ -32,7 +32,7 @@ config DRM_RCAR_DW_HDMI
 
 config DRM_RCAR_USE_LVDS
 	bool "R-Car DU LVDS Encoder Support"
-	depends on DRM_BRIDGE && OF
+	depends on DRM_BRIDGE && OF && DRM_RCAR_DU
 	default DRM_RCAR_DU
 	help
 	  Enable support for the R-Car Display Unit embedded LVDS encoders.
-- 
2.25.1




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