Re: [PATCH 05/57] media: i2c: imx214: Drop check for reentrant .s_stream()

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Hi Laurent

On Thu, Sep 14, 2023 at 8:17 PM Laurent Pinchart
<laurent.pinchart@xxxxxxxxxxxxxxxx> wrote:
>
> The subdev .s_stream() operation shall not be called to start streaming
> on an already started subdev, or stop streaming on a stopped subdev.
> Remove the check that guards against that condition.
>

In general I agree with the patch, but I think it would be safer to
land it in two stages.

first:

       if WARN_ON(imx214->streaming == enable)
               return 0;

and in the next version replace it completely.

otherwise

> Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>

Reviewed-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
> ---
>  drivers/media/i2c/imx214.c | 3 ---
>  1 file changed, 3 deletions(-)
>
> diff --git a/drivers/media/i2c/imx214.c b/drivers/media/i2c/imx214.c
> index 2f9c8582f940..e2805173f4b1 100644
> --- a/drivers/media/i2c/imx214.c
> +++ b/drivers/media/i2c/imx214.c
> @@ -775,9 +775,6 @@ static int imx214_s_stream(struct v4l2_subdev *subdev, int enable)
>         struct imx214 *imx214 = to_imx214(subdev);
>         int ret;
>
> -       if (imx214->streaming == enable)
> -               return 0;
> -
>         if (enable) {
>                 ret = pm_runtime_resume_and_get(imx214->dev);
>                 if (ret < 0)
> --
> Regards,
>
> Laurent Pinchart
>




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