Re: [PATCH] V4L: soc-camera: provide support for S_INPUT.

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2011/12/16 Javier Martin <javier.martin@xxxxxxxxxxxxxxxxx>:
> Some v4l-subdevs such as tvp5150 have multiple
> inputs. This patch allows the user of a soc-camera
> device to select between them.
>
> Signed-off-by: Javier Martin <javier.martin@xxxxxxxxxxxxxxxxx>
> ---
>  drivers/media/video/soc_camera.c |    6 +++---
>  1 files changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/media/video/soc_camera.c b/drivers/media/video/soc_camera.c
> index b72580c..1cea1a9 100644
> --- a/drivers/media/video/soc_camera.c
> +++ b/drivers/media/video/soc_camera.c
> @@ -235,10 +235,10 @@ static int soc_camera_g_input(struct file *file, void *priv, unsigned int *i)
>
>  static int soc_camera_s_input(struct file *file, void *priv, unsigned int i)
>  {
> -       if (i > 0)
> -               return -EINVAL;
should it check max input?

> +       struct soc_camera_device *icd = file->private_data;
> +       struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
>
> -       return 0;
> +       return v4l2_subdev_call(sd, video, s_routing, i, 0, 0);
>  }
>
why must output be zero?

Regards,
Scott
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