X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=drivers%2Fgpu%2Fdrm%2Frcar-du%2Frcar_du_kms.c;h=cc9136e8ee9cd2f73c65850215fad60a584358ee;hb=7a27eae362ae1494b7a4f4c4d9137fc04fa34e63;hp=0c5ee616b5a3aabd12234ee7f208dc277a99d73f;hpb=dfdb3c4d18221c5c66a1bfecb76c25b3f95275e8;p=firefly-linux-kernel-4.4.55.git

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
index 0c5ee616b5a3..cc9136e8ee9c 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
@@ -346,8 +346,14 @@ static int rcar_du_encoders_init(struct rcar_du_device *rcdu)
 		/* Process the output pipeline. */
 		ret = rcar_du_encoders_init_one(rcdu, output, &ep);
 		if (ret < 0) {
-			of_node_put(ep_node);
-			return ret;
+			if (ret == -EPROBE_DEFER) {
+				of_node_put(ep_node);
+				return ret;
+			}
+
+			dev_info(rcdu->dev,
+				 "encoder initialization failed, skipping\n");
+			continue;
 		}
 
 		num_encoders += ret;
@@ -413,6 +419,11 @@ int rcar_du_modeset_init(struct rcar_du_device *rcdu)
 	if (ret < 0)
 		return ret;
 
+	if (ret == 0) {
+		dev_err(rcdu->dev, "error: no encoder could be initialized\n");
+		return -EINVAL;
+	}
+
 	num_encoders = ret;
 
 	/* Set the possible CRTCs and possible clones. There's always at least