linux-kernel - [PATCH 4.16 134/161] media: ov5645: add missing of_node

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Date:   Thu, 24 May 2018 11:39:19 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Mauro Carvalho Chehab <mchehab@...pensource.com>,
        Akinobu Mita <akinobu.mita@...il.com>,
        Todor Tomov <todor.tomov@...aro.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.16 134/161] media: ov5645: add missing of_node_put() in error path

4.16-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Akinobu Mita <akinobu.mita@...il.com>

[ Upstream commit 06fe932307d58108a11c3e603517dd2a73a57b80 ]

The device node obtained with of_graph_get_next_endpoint() should be
released by calling of_node_put().  But it was not released when
v4l2_fwnode_endpoint_parse() failed.

This change moves the of_node_put() call before the error check and
fixes the issue.

Cc: Mauro Carvalho Chehab <mchehab@...pensource.com>
Signed-off-by: Akinobu Mita <akinobu.mita@...il.com>
Acked-by: Todor Tomov <todor.tomov@...aro.org>
Signed-off-by: Sakari Ailus <sakari.ailus@...ux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@...pensource.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/media/i2c/ov5645.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/media/i2c/ov5645.c
+++ b/drivers/media/i2c/ov5645.c
@@ -1131,13 +1131,14 @@ static int ov5645_probe(struct i2c_clien
 
 	ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint),
 					 &ov5645->ep);
+
+	of_node_put(endpoint);
+
 	if (ret < 0) {
 		dev_err(dev, "parsing endpoint node failed\n");
 		return ret;
 	}
 
-	of_node_put(endpoint);
-
 	if (ov5645->ep.bus_type != V4L2_MBUS_CSI2) {
 		dev_err(dev, "invalid bus type, must be CSI2\n");
 		return -EINVAL;