linux-kernel - [PATCH v3 3/9] coresight: platform: Fix refcounting for graph nodes

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Date:   Fri, 27 Jul 2018 11:15:31 +0100
From:   Suzuki K Poulose <suzuki.poulose@....com>
To:     linux-arm-kernel@...ts.infradead.org
Cc:     linux-kernel@...r.kernel.org, mathieu.poirier@...aro.org,
        mike.leach@...aro.org, robert.walker@....com,
        coresight@...ts.linaro.org, robh@...nel.org,
        frowand.list@...il.com, devicetree@...r.kernel.org,
        matt.sealey@....com, charles.garcia-tobin@....com,
        john.horley@....com, al.grant@....com,
        Suzuki K Poulose <suzuki.poulose@....com>
Subject: [PATCH v3 3/9] coresight: platform: Fix refcounting for graph nodes

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@...aro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@....com>
---
Changes since v1:
 - Splitted from of_node recounting fix, part 2
---
 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 70205f3..28d3aef 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;
 }
 
-- 
2.7.4