From: Inki Dae <inki.dae@samsung.com>
Date: Wed, 14 Jun 2017 17:09:00 +0900
Subject: drm/exynos: dsi: do not try to find bridge
Git-commit: c9948920cfc63c5ed4eb37f461a1b2752d2e1d3b
Patch-mainline: v4.13-rc3
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

It doesn't need to try to find a bridge if bridge node doesn't exist.

Reviewed-by: Shuah Khan <shuahkh@osg.samsung.com>
Tested-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/exynos/exynos_drm_dsi.c |    8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

--- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
@@ -1687,9 +1687,11 @@ static int exynos_dsi_bind(struct device
 		return ret;
 	}
 
-	bridge = of_drm_find_bridge(dsi->bridge_node);
-	if (bridge)
-		drm_bridge_attach(encoder, bridge, NULL);
+	if (dsi->bridge_node) {
+		bridge = of_drm_find_bridge(dsi->bridge_node);
+		if (bridge)
+			drm_bridge_attach(encoder, bridge, NULL);
+	}
 
 	return mipi_dsi_host_register(&dsi->dsi_host);
 }