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media: entity: Skip non-data links in graph iteration

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When iterating over the media graph, don't follow links that are not
data links.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Scally <djrscally@gmail.com>
Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Daniel Scally 2022-03-02 22:03:00 +00:00 committed by Mauro Carvalho Chehab
parent 6008dea1c7
commit af3ed78ecb
1 changed files with 6 additions and 0 deletions
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6
drivers/media/mc/mc-entity.c
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@ -295,6 +295,12 @@ static void media_graph_walk_iter(struct media_graph *graph)
link = list_entry(link_top(graph), typeof(*link), list);
/* If the link is not a data link, don't follow it */
if ((link->flags & MEDIA_LNK_FL_LINK_TYPE) != MEDIA_LNK_FL_DATA_LINK) {
link_top(graph) = link_top(graph)->next;
return;
}
/* The link is not enabled so we do not follow. */
if (!(link->flags & MEDIA_LNK_FL_ENABLED)) {
link_top(graph) = link_top(graph)->next;