From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Date: Thu, 1 Dec 2016 11:07:49 +0000 (+0200)
Subject: drm: rcar-du: Skip disabled outputs
X-Git-Tag: v4.12~21^2~22^2~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4739a0d40b668ed4d60e048ee8ff03cd863e0987;p=platform%2Fkernel%2Flinux-exynos.git

drm: rcar-du: Skip disabled outputs

When a DT node connected to a DU output is disabled no bridge will ever
be instantiated for it. Skip the output in that case.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
---

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
index f38fc2f..f4125c8 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
@@ -302,6 +302,13 @@ static int rcar_du_encoders_init_one(struct rcar_du_device *rcdu,
 		return -ENODEV;
 	}
 
+	if (!of_device_is_available(entity)) {
+		dev_dbg(rcdu->dev,
+			"connected entity %s is disabled, skipping\n",
+			entity->full_name);
+		return -ENODEV;
+	}
+
 	entity_ep_node = of_parse_phandle(ep->local_node, "remote-endpoint", 0);
 
 	for_each_endpoint_of_node(entity, ep_node) {