On Thu, 25 Jun 2015, William Towle wrote:
> Fix rcar_vin_try_fmt's use of an inappropriate pad number when calling
> the subdev set_fmt function - for the ADV7612, IDs should be non-zero.
>
> Signed-off-by: William Towle <william.to...@codethink.co.uk>
> Reviewed-by: Rob Taylor <rob.tay...@codethink.co.uk>
> ---
> drivers/media/platform/soc_camera/rcar_vin.c | 20 ++++++++++++++------
> 1 file changed, 14 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/media/platform/soc_camera/rcar_vin.c
> b/drivers/media/platform/soc_camera/rcar_vin.c
> index 00c1034..1023c5b 100644
> --- a/drivers/media/platform/soc_camera/rcar_vin.c
> +++ b/drivers/media/platform/soc_camera/rcar_vin.c
> @@ -1697,14 +1697,18 @@ static int rcar_vin_try_fmt(struct soc_camera_device
> *icd,
> const struct soc_camera_format_xlate *xlate;
> struct v4l2_pix_format *pix = &f->fmt.pix;
> struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
> - struct v4l2_subdev_pad_config pad_cfg;
> + struct v4l2_subdev_pad_config *pad_cfg;
> struct v4l2_subdev_format format = {
> .which = V4L2_SUBDEV_FORMAT_TRY,
> };
> struct v4l2_mbus_framefmt *mf = &format.format;
> __u32 pixfmt = pix->pixelformat;
> int width, height;
> - int ret;
> + int ret= -ENOMEM;
Uhm, I find this very superfluous...
> +
> + pad_cfg = v4l2_subdev_alloc_pad_config(sd);
> + if (pad_cfg == NULL)
> + goto out;
I like the addition of the "cleanup" label instead of freeing the
allocated pad on each error, but here please just do
+ return -ENOMEN;
and remove the "out" label.
Thanks
Guennadi
>
> xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
> if (!xlate) {
> @@ -1734,10 +1738,11 @@ static int rcar_vin_try_fmt(struct soc_camera_device
> *icd,
> mf->code = xlate->code;
> mf->colorspace = pix->colorspace;
>
> + format.pad = icd->src_pad_idx;
> ret = v4l2_device_call_until_err(sd->v4l2_dev, soc_camera_grp_id(icd),
> - pad, set_fmt, &pad_cfg, &format);
> + pad, set_fmt, pad_cfg, &format);
> if (ret < 0)
> - return ret;
> + goto cleanup;
>
> /* Adjust only if VIN cannot scale */
> if (pix->width > mf->width * 2)
> @@ -1761,12 +1766,12 @@ static int rcar_vin_try_fmt(struct soc_camera_device
> *icd,
> mf->height = VIN_MAX_HEIGHT;
> ret = v4l2_device_call_until_err(sd->v4l2_dev,
> soc_camera_grp_id(icd),
> - pad, set_fmt, &pad_cfg,
> + pad, set_fmt, pad_cfg,
> &format);
> if (ret < 0) {
> dev_err(icd->parent,
> "client try_fmt() = %d\n", ret);
> - return ret;
> + goto cleanup;
> }
> }
> /* We will scale exactly */
> @@ -1776,6 +1781,9 @@ static int rcar_vin_try_fmt(struct soc_camera_device
> *icd,
> pix->height = height;
> }
>
> +cleanup:
> + v4l2_subdev_free_pad_config(pad_cfg);
> +out:
> return ret;
> }
>
> --
> 1.7.10.4
>
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