Do not require a connected link to a pad if a pad has no links connected to
it.
Signed-off-by: Sakari Ailus <sakari.ai...@iki.fi>
---
Hi Laurent,
This goes on top of patch 2/4. I can combine the two in the end but I think
this is cleaner as a separate change.
drivers/media/media-entity.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c
index a99396b..2ad291f 100644
--- a/drivers/media/media-entity.c
+++ b/drivers/media/media-entity.c
@@ -236,6 +236,7 @@ __must_check int media_entity_pipeline_start(struct
media_entity *entity,
while ((entity = media_entity_graph_walk_next(&graph))) {
DECLARE_BITMAP(active, entity->num_pads);
+ DECLARE_BITMAP(has_no_links, entity->num_pads);
unsigned int i;
entity->stream_count++;
@@ -250,6 +251,7 @@ __must_check int media_entity_pipeline_start(struct
media_entity *entity,
continue;
bitmap_zero(active, entity->num_pads);
+ bitmap_fill(has_no_links, entity->num_pads);
for (i = 0; i < entity->num_links; i++) {
struct media_link *link = &entity->links[i];
@@ -257,6 +259,11 @@ __must_check int media_entity_pipeline_start(struct
media_entity *entity,
? link->sink : link->source;
/*
+ * Mark that a pad is connected by a link.
+ */
+ bitmap_clear(has_no_links, pad->index, 1);
+
+ /*
* Pads that either do not need to connect or
* are connected through an enabled link are
* fine.
@@ -278,6 +285,9 @@ __must_check int media_entity_pipeline_start(struct
media_entity *entity,
goto error;
}
+ /* Either no links or validated links are fine. */
+ bitmap_or(active, active, has_no_links, entity->num_pads);
+
if (!bitmap_full(active, entity->num_pads)) {
ret = -EPIPE;
goto error;
--
1.7.10.4
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