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| author | Laurent Pinchart | 2016-09-29 10:41:24 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab | 2016-11-16 19:13:39 +0100 |
| commit | 04b96d1a6954309eb562ef2736c019b3cf2dad2a (patch) | |
| tree | 4fe7fa380db0e477bc6c7aec9a5427488fed4315 | |
| parent | [media] uvcvideo: add support for Oculus Rift Sensor (diff) | |
| download | kernel-qcow2-linux-04b96d1a6954309eb562ef2736c019b3cf2dad2a.tar.gz kernel-qcow2-linux-04b96d1a6954309eb562ef2736c019b3cf2dad2a.tar.xz kernel-qcow2-linux-04b96d1a6954309eb562ef2736c019b3cf2dad2a.zip | |
[media] v4l: omap3isp: Fix OF node double put when parsing OF graph
When parsing the graph the driver loops over all endpoints using
of_graph_get_next_endpoint(). The function handles reference counting of
the passed and returned nodes, so the returned node's reference count
must not be decreased manually in the normal path.
Move the offending of_node_put() call to the error path that requires
manual reference count handling.
Reported-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
| -rw-r--r-- | drivers/media/platform/omap3isp/isp.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c index 2e1b17ef82a3..084ecf4aa9a4 100644 --- a/drivers/media/platform/omap3isp/isp.c +++ b/drivers/media/platform/omap3isp/isp.c @@ -2117,23 +2117,18 @@ static int isp_of_parse_nodes(struct device *dev, struct isp_async_subdev *isd; isd = devm_kzalloc(dev, sizeof(*isd), GFP_KERNEL); - if (!isd) { - of_node_put(node); - return -ENOMEM; - } + if (!isd) + goto error; notifier->subdevs[notifier->num_subdevs] = &isd->asd; - if (isp_of_parse_node(dev, node, isd)) { - of_node_put(node); - return -EINVAL; - } + if (isp_of_parse_node(dev, node, isd)) + goto error; isd->asd.match.of.node = of_graph_get_remote_port_parent(node); - of_node_put(node); if (!isd->asd.match.of.node) { dev_warn(dev, "bad remote port parent\n"); - return -EINVAL; + goto error; } isd->asd.match_type = V4L2_ASYNC_MATCH_OF; @@ -2141,6 +2136,10 @@ static int isp_of_parse_nodes(struct device *dev, } return notifier->num_subdevs; + +error: + of_node_put(node); + return -EINVAL; } static int isp_subdev_notifier_bound(struct v4l2_async_notifier *async, |