[media] omap3isp: Find source pad from external entity

No longer assume pad number 0 is the source pad of the external entity. Find
the source pad from the external entity and use it instead.

Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 14 insertions, 1 deletions

diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c
index 5ea5520ff467..cb9bc3436135 100644
--- a/drivers/media/platform/omap3isp/isp.c
+++ b/drivers/media/platform/omap3isp/isp.c
@@ -1767,6 +1767,7 @@ static int isp_register_entities(struct isp_device *isp)
                 struct media_entity *input;
                 unsigned int flags;
                 unsigned int pad;
+                unsigned int i;
 
                 sensor = isp_register_subdev_group(isp, subdevs->subdevs);
                 if (sensor == NULL)
@@ -1814,7 +1815,19 @@ static int isp_register_entities(struct isp_device *isp)
                         goto done;
                 }
 
-                ret = media_entity_create_link(&sensor->entity, 0, input, pad,
+                for (i = 0; i < sensor->entity.num_pads; i++) {
+                        if (sensor->entity.pads[i].flags & MEDIA_PAD_FL_SOURCE)
+                                break;
+                }
+                if (i == sensor->entity.num_pads) {
+                        dev_err(isp->dev,
+                                "%s: no source pad in external entity\n",
+                                __func__);
+                        ret = -EINVAL;
+                        goto done;
+                }
+
+                ret = media_entity_create_link(&sensor->entity, i, input, pad,
                                                flags);
                 if (ret < 0)
                         goto done;