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media: mtk-vcodec: fix leaked of_node references 

The call to of_find_device_by_node returns a node pointer with refcount
incremented thus it must be explicitly decremented after the last
usage.

Detected by coccinelle with the following warnings:
drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c:60:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 38, but without a corresponding object release within this function.
drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c:63:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 38, but without a corresponding object release within this function.
drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c:72:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 38, but without a corresponding object release within this function.

Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Wen Yang 2019-05-06 03:05:17 -04:00 committed by Mauro Carvalho Chehab
parent c8d0ccfd73
commit 15b5c5b1dc
1 changed files with 1 additions and 1 deletions
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2
drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
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@ -42,8 +42,8 @@ int mtk_vcodec_init_dec_pm(struct mtk_vcodec_dev *mtkdev)
}
pdev = of_find_device_by_node(node);
if (WARN_ON(!pdev)) {
of_node_put(node);
if (WARN_ON(!pdev)) {
return -1;
}
pm->larbvdec = &pdev->dev;