Hi Sakari,

On 05.12.2012 00:22, Sakari Ailus wrote:
Hi Andrzej,

On Fri, Nov 23, 2012 at 04:22:30PM +0100, Andrzej Hajda wrote:
Function support variable number of subdevs in pipe-line.

Signed-off-by: Andrzej Hajda <a.ha...@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.p...@samsung.com>
---
  drivers/media/platform/s5p-fimc/fimc-capture.c |  100 +++++++++++++++---------
  1 file changed, 64 insertions(+), 36 deletions(-)

diff --git a/drivers/media/platform/s5p-fimc/fimc-capture.c 
b/drivers/media/platform/s5p-fimc/fimc-capture.c
index 3acbea3..39c4555 100644
--- a/drivers/media/platform/s5p-fimc/fimc-capture.c
+++ b/drivers/media/platform/s5p-fimc/fimc-capture.c
@@ -794,6 +794,21 @@ static int fimc_cap_enum_fmt_mplane(struct file *file, 
void *priv,
        return 0;
  }
+static struct media_entity *fimc_pipeline_get_head(struct media_entity *me)
+{
+       struct media_pad *pad = &me->pads[0];
+
+       while (!(pad->flags & MEDIA_PAD_FL_SOURCE)) {
+               pad = media_entity_remote_source(pad);
+               if (!pad)
+                       break;
Isn't it an error if a sink pad of the entity isn't connected?
media_entity_remote_source(pad) returns NULL if the link is disabled. I'm
just wondering if this is possible.
AFAIK documentation says nothing about it and current media_entity implementation
accepts pipelines with pads without active links.
In fact during s5c73m3 sensor development I have successfully used such pipeline as a temporary solution.

+               me = pad->entity;
+               pad = &me->pads[0];
+       }
+
+       return me;
+}
+
Regards
Andrzej

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