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Subject[PATCH 3/3] media: mtk-vcodec: add missing put_device() call in mtk_vcodec_init_enc_pm()
Date
if of_find_device_by_node() succeed, mtk_vcodec_init_enc_pm() doesn't have
a corresponding put_device(). Thus add jump target to fix the exception
handling for this function implementation.

Fixes: 4e855a6efa54 ("[media] vcodec: mediatek: Add Mediatek V4L2 Video Encoder Driver")
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
---
.../platform/mtk-vcodec/mtk_vcodec_enc_pm.c | 26 ++++++++++++++-----
1 file changed, 19 insertions(+), 7 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 3e2bfded79a6..e682bdb1ed45 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c
@@ -49,14 +49,16 @@ int mtk_vcodec_init_enc_pm(struct mtk_vcodec_dev *mtkdev)
node = of_parse_phandle(dev->of_node, "mediatek,larb", 1);
if (!node) {
mtk_v4l2_err("no mediatek,larb found");
- return -ENODEV;
+ ret = -ENODEV;
+ goto put_larbvenc;
}

pdev = of_find_device_by_node(node);
of_node_put(node);
if (!pdev) {
mtk_v4l2_err("no mediatek,larb device found");
- return -ENODEV;
+ ret = -ENODEV;
+ goto put_larbvenc;
}

pm->larbvenclt = &pdev->dev;
@@ -69,11 +71,14 @@ int mtk_vcodec_init_enc_pm(struct mtk_vcodec_dev *mtkdev)
enc_clk->clk_info = devm_kcalloc(&pdev->dev,
enc_clk->clk_num, sizeof(*clk_info),
GFP_KERNEL);
- if (!enc_clk->clk_info)
- return -ENOMEM;
+ if (!enc_clk->clk_info) {
+ ret = -ENOMEM;
+ goto put_larbvenclt;
+ }
} else {
mtk_v4l2_err("Failed to get venc clock count");
- return -EINVAL;
+ ret = -EINVAL;
+ goto put_larbvenclt;
}

for (i = 0; i < enc_clk->clk_num; i++) {
@@ -82,17 +87,24 @@ int mtk_vcodec_init_enc_pm(struct mtk_vcodec_dev *mtkdev)
"clock-names", i, &clk_info->clk_name);
if (ret) {
mtk_v4l2_err("venc failed to get clk name %d", i);
- return ret;
+ goto put_larbvenclt;
}
clk_info->vcodec_clk = devm_clk_get(&pdev->dev,
clk_info->clk_name);
if (IS_ERR(clk_info->vcodec_clk)) {
mtk_v4l2_err("venc devm_clk_get (%d)%s fail", i,
clk_info->clk_name);
- return PTR_ERR(clk_info->vcodec_clk);
+ ret = PTR_ERR(clk_info->vcodec_clk);
+ goto put_larbvenclt;
}
}

+ return 0;
+
+put_larbvenclt:
+ put_device(pm->larbvenclt);
+put_larbvenc:
+ put_device(pm->larbvenc);
return ret;
}

--
2.25.4
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