* [PATCH] media: mtk-vcodec: Release device nodes in mtk_vcodec_init_enc_pm()
@ 2018-10-20 17:50 Alexey Khoroshilov
0 siblings, 0 replies; only message in thread
From: Alexey Khoroshilov @ 2018-10-20 17:50 UTC (permalink / raw)
To: Tiffany Lin, Andrew-CT Chen, Mauro Carvalho Chehab, Matthias Brugger
Cc: Alexey Khoroshilov, linux-media, linux-arm-kernel,
linux-mediatek, linux-kernel, ldv-project
of_parse_phandle() returns the device node with refcount incremented.
There are two nodes that are used temporary in mtk_vcodec_init_enc_pm(),
but their refcounts are not decremented.
The patch adds one of_node_put() and fixes returning error codes.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
---
drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c
index 3e73e9db781f..7c025045ea90 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c
@@ -41,25 +41,27 @@ int mtk_vcodec_init_enc_pm(struct mtk_vcodec_dev *mtkdev)
node = of_parse_phandle(dev->of_node, "mediatek,larb", 0);
if (!node) {
mtk_v4l2_err("no mediatek,larb found");
- return -1;
+ return -ENODEV;
}
pdev = of_find_device_by_node(node);
+ of_node_put(node);
if (!pdev) {
mtk_v4l2_err("no mediatek,larb device found");
- return -1;
+ return -ENODEV;
}
pm->larbvenc = &pdev->dev;
node = of_parse_phandle(dev->of_node, "mediatek,larb", 1);
if (!node) {
mtk_v4l2_err("no mediatek,larb found");
- return -1;
+ return -ENODEV;
}
pdev = of_find_device_by_node(node);
+ of_node_put(node);
if (!pdev) {
mtk_v4l2_err("no mediatek,larb device found");
- return -1;
+ return -ENODEV;
}
pm->larbvenclt = &pdev->dev;
--
2.7.4
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2018-10-20 17:50 [PATCH] media: mtk-vcodec: Release device nodes in mtk_vcodec_init_enc_pm() Alexey Khoroshilov
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