From 488cbc828e88dc49210669fc7a15f2bb51ab9a2f Mon Sep 17 00:00:00 2001
From: Suzuki K Poulose <suzuki.poulose@arm.com>
Date: Thu, 20 Sep 2018 13:17:38 -0600
Subject: [PATCH] UPSTREAM: coresight: platform: Fix refcounting for graph
 nodes

(Upstream commit a0f9992c809fb73a05de1894734418a88178539f).

The coresight driver doesn't drop the references on the
remote endpoint/port nodes. Add the missing of_node_put()
calls.

Reported-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Bug: 140266694
Change-Id: Iec4edd914f45baa76431ee4ab2c0e67dcbe78600
Signed-off-by: Yabin Cui <yabinc@google.com>
---
 drivers/hwtracing/coresight/of_coresight.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/hwtracing/coresight/of_coresight.c b/drivers/hwtracing/coresight/of_coresight.c
index 70205f3eae8e..28d3aef1660b 100644
--- a/drivers/hwtracing/coresight/of_coresight.c
+++ b/drivers/hwtracing/coresight/of_coresight.c
@@ -168,6 +168,11 @@ static int of_coresight_parse_endpoint(struct device *dev,
 		ret = 1;
 	} while (0);
 
+	if (rparent)
+		of_node_put(rparent);
+	if (rport)
+		of_node_put(rport);
+
 	return ret;
 }