From: Rob Herring <robh@kernel.org>
Date: Fri, 11 May 2018 09:23:33 -0500
Subject: drm: rcar-du: disable dtc graph-endpoint warnings on DT overlays
Git-commit: 3098e5b7eebc5dd923562fcbf8acc5990c9e3c64
Patch-mainline: v4.18-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

The rcar DT overlays are missing symetrical remote-endpoint properties
in their graph nodes because the remote-endpoint is fixed up at
run-time. Disable the dtc 'graph-endpoint' warnings when compiling these
overlays. If this becomes a common problem for overlays, then perhaps
this check needs to be disabled for all overlays.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: David Airlie <airlied@linux.ie>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-renesas-soc@vger.kernel.org
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/rcar-du/Makefile |    7 +++++++
 1 file changed, 7 insertions(+)

--- a/drivers/gpu/drm/rcar-du/Makefile
+++ b/drivers/gpu/drm/rcar-du/Makefile
@@ -16,3 +16,10 @@ rcar-du-drm-$(CONFIG_DRM_RCAR_VSP)	+= rc
 obj-$(CONFIG_DRM_RCAR_DU)		+= rcar-du-drm.o
 obj-$(CONFIG_DRM_RCAR_DW_HDMI)		+= rcar_dw_hdmi.o
 obj-$(CONFIG_DRM_RCAR_LVDS)		+= rcar_lvds.o
+
+# 'remote-endpoint' is fixed up at run-time
+DTC_FLAGS_rcar_du_of_lvds_r8a7790 += -Wno-graph_endpoint
+DTC_FLAGS_rcar_du_of_lvds_r8a7791 += -Wno-graph_endpoint
+DTC_FLAGS_rcar_du_of_lvds_r8a7793 += -Wno-graph_endpoint
+DTC_FLAGS_rcar_du_of_lvds_r8a7795 += -Wno-graph_endpoint
+DTC_FLAGS_rcar_du_of_lvds_r8a7796 += -Wno-graph_endpoint