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;
+
+       pad_cfg = v4l2_subdev_alloc_pad_config(sd);
+       if (pad_cfg == NULL)
+               goto out;
 
        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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