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media: mtk-mdp: fix reference count on old device tree 

of_get_next_child() increments the reference count of the returning
device_node. Decrement it in the check if we are using the old or the
new DTB.

Fixes: ba1f1f70c2 ("[media] media: mtk-mdp: Fix mdp device tree")
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Acked-by: Houlong Wei <houlong.wei@mediatek.com>
[hverkuil-cisco@xs4all.nl: use node instead of parent as temp variable]
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Matthias Brugger 2019-06-21 08:32:50 -03:00 committed by Mauro Carvalho Chehab
parent b557b50731
commit 864919ea03
1 changed files with 3 additions and 1 deletions
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4
drivers/media/platform/mtk-mdp/mtk_mdp_core.c
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@ -110,7 +110,9 @@ static int mtk_mdp_probe(struct platform_device *pdev)
mutex_init(&mdp->vpulock);
/* Old dts had the components as child nodes */
if (of_get_next_child(dev->of_node, NULL)) {
node = of_get_next_child(dev->of_node, NULL);
if (node) {
of_node_put(node);
parent = dev->of_node;
dev_warn(dev, "device tree is out of date\n");
} else {