Re: [PATCH] mtk-mdp: fix double mutex_unlock

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On Mon, 2016-09-19 at 10:00 +0200, Hans Verkuil wrote:
> Fix smatch error:
> 
> media-git/drivers/media/platform/mtk-mdp/mtk_mdp_vpu.c:100 mtk_mdp_vpu_send_msg() error: double unlock 'mutex:&ctx->mdp_dev->vpulock'
> 
> Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>


Reviewed-by: Minghsiu Tsai <minghsiu.tsai@xxxxxxxxxxxx>

> ---
> diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_vpu.c b/drivers/media/platform/mtk-mdp/mtk_mdp_vpu.c
> index 39188e5..4893825 100644
> --- a/drivers/media/platform/mtk-mdp/mtk_mdp_vpu.c
> +++ b/drivers/media/platform/mtk-mdp/mtk_mdp_vpu.c
> @@ -92,11 +92,9 @@ static int mtk_mdp_vpu_send_msg(void *msg, int len, struct mtk_mdp_vpu *vpu,
> 
>  	mutex_lock(&ctx->mdp_dev->vpulock);
>  	err = vpu_ipi_send(vpu->pdev, (enum ipi_id)id, msg, len);
> -	if (err) {
> -		mutex_unlock(&ctx->mdp_dev->vpulock);
> +	if (err)
>  		dev_err(&ctx->mdp_dev->pdev->dev,
>  			"vpu_ipi_send fail status %d\n", err);
> -	}
>  	mutex_unlock(&ctx->mdp_dev->vpulock);
> 
>  	return err;
> 


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