* [PATCH] media: mtk-vpu: Fix a resource leak in the error handling path of 'mtk_vpu_probe()'
@ 2021-08-19 20:21 Christophe JAILLET
2021-08-19 23:20 ` houlong wei
0 siblings, 1 reply; 2+ messages in thread
From: Christophe JAILLET @ 2021-08-19 20:21 UTC (permalink / raw)
To: minghsiu.tsai, houlong.wei, andrew-ct.chen, tiffany.lin, mchehab,
matthias.bgg, hans.verkuil
Cc: linux-media, linux-mediatek, linux-arm-kernel, linux-kernel,
kernel-janitors, Christophe JAILLET
A successful 'clk_prepare()' call should be balanced by a corresponding
'clk_unprepare()' call in the error handling path of the probe, as already
done in the remove function.
Update the error handling path accordingly.
Fixes: 3003a180ef6b ("[media] VPU: mediatek: support Mediatek VPU")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
drivers/media/platform/mtk-vpu/mtk_vpu.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/media/platform/mtk-vpu/mtk_vpu.c b/drivers/media/platform/mtk-vpu/mtk_vpu.c
index ec290dde59cf..7f1647da0ade 100644
--- a/drivers/media/platform/mtk-vpu/mtk_vpu.c
+++ b/drivers/media/platform/mtk-vpu/mtk_vpu.c
@@ -848,7 +848,8 @@ static int mtk_vpu_probe(struct platform_device *pdev)
vpu->wdt.wq = create_singlethread_workqueue("vpu_wdt");
if (!vpu->wdt.wq) {
dev_err(dev, "initialize wdt workqueue failed\n");
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto clk_unprepare;
}
INIT_WORK(&vpu->wdt.ws, vpu_wdt_reset_func);
mutex_init(&vpu->vpu_mutex);
@@ -942,6 +943,8 @@ static int mtk_vpu_probe(struct platform_device *pdev)
vpu_clock_disable(vpu);
workqueue_destroy:
destroy_workqueue(vpu->wdt.wq);
+clk_unprepare:
+ clk_unprepare(vpu->clk);
return ret;
}
--
2.30.2
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] media: mtk-vpu: Fix a resource leak in the error handling path of 'mtk_vpu_probe()'
2021-08-19 20:21 [PATCH] media: mtk-vpu: Fix a resource leak in the error handling path of 'mtk_vpu_probe()' Christophe JAILLET
@ 2021-08-19 23:20 ` houlong wei
0 siblings, 0 replies; 2+ messages in thread
From: houlong wei @ 2021-08-19 23:20 UTC (permalink / raw)
To: Christophe JAILLET, Minghsiu Tsai (蔡明修),
Andrew-CT Chen (陳智迪),
Tiffany Lin (林慧珊),
mchehab, matthias.bgg, hans.verkuil
Cc: linux-media, linux-mediatek, linux-arm-kernel, linux-kernel,
kernel-janitors, houlong.wei
On Fri, 2021-08-20 at 04:21 +0800, Christophe JAILLET wrote:
> A successful 'clk_prepare()' call should be balanced by a
> corresponding
> 'clk_unprepare()' call in the error handling path of the probe, as
> already
> done in the remove function.
>
> Update the error handling path accordingly.
>
> Fixes: 3003a180ef6b ("[media] VPU: mediatek: support Mediatek VPU")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
> ---
>
Reviewed-by: Houlong Wei <houlong.wei@mediatek.com>
> drivers/media/platform/mtk-vpu/mtk_vpu.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/media/platform/mtk-vpu/mtk_vpu.c
> b/drivers/media/platform/mtk-vpu/mtk_vpu.c
> index ec290dde59cf..7f1647da0ade 100644
> --- a/drivers/media/platform/mtk-vpu/mtk_vpu.c
> +++ b/drivers/media/platform/mtk-vpu/mtk_vpu.c
> @@ -848,7 +848,8 @@ static int mtk_vpu_probe(struct platform_device
> *pdev)
> vpu->wdt.wq = create_singlethread_workqueue("vpu_wdt");
> if (!vpu->wdt.wq) {
> dev_err(dev, "initialize wdt workqueue failed\n");
> - return -ENOMEM;
> + ret = -ENOMEM;
> + goto clk_unprepare;
> }
> INIT_WORK(&vpu->wdt.ws, vpu_wdt_reset_func);
> mutex_init(&vpu->vpu_mutex);
> @@ -942,6 +943,8 @@ static int mtk_vpu_probe(struct platform_device
> *pdev)
> vpu_clock_disable(vpu);
> workqueue_destroy:
> destroy_workqueue(vpu->wdt.wq);
> +clk_unprepare:
> + clk_unprepare(vpu->clk);
>
> return ret;
> }
> --
> 2.30.2
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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2021-08-19 20:21 [PATCH] media: mtk-vpu: Fix a resource leak in the error handling path of 'mtk_vpu_probe()' Christophe JAILLET
2021-08-19 23:20 ` houlong wei
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