[media] media: Use entity enums in graph walk
This will also mean that the necessary graph related data structures will
be allocated dynamically, removing the need for maximum ID checks.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c
index 85af715..86a8396 100644
--- a/drivers/media/media-entity.c
+++ b/drivers/media/media-entity.c
@@ -296,7 +296,7 @@
__must_check int media_entity_graph_walk_init(
struct media_entity_graph *graph, struct media_device *mdev)
{
- return 0;
+ return media_entity_enum_init(&graph->ent_enum, mdev);
}
EXPORT_SYMBOL_GPL(media_entity_graph_walk_init);
@@ -306,20 +306,18 @@
*/
void media_entity_graph_walk_cleanup(struct media_entity_graph *graph)
{
+ media_entity_enum_cleanup(&graph->ent_enum);
}
EXPORT_SYMBOL_GPL(media_entity_graph_walk_cleanup);
void media_entity_graph_walk_start(struct media_entity_graph *graph,
struct media_entity *entity)
{
+ media_entity_enum_zero(&graph->ent_enum);
+ media_entity_enum_set(&graph->ent_enum, entity);
+
graph->top = 0;
graph->stack[graph->top].entity = NULL;
- bitmap_zero(graph->entities, MEDIA_ENTITY_ENUM_MAX_ID);
-
- if (WARN_ON(media_entity_id(entity) >= MEDIA_ENTITY_ENUM_MAX_ID))
- return;
-
- __set_bit(media_entity_id(entity), graph->entities);
stack_push(graph, entity);
}
EXPORT_SYMBOL_GPL(media_entity_graph_walk_start);
@@ -350,11 +348,9 @@
/* Get the entity in the other end of the link . */
next = media_entity_other(entity, link);
- if (WARN_ON(media_entity_id(next) >= MEDIA_ENTITY_ENUM_MAX_ID))
- return NULL;
/* Has the entity already been visited? */
- if (__test_and_set_bit(media_entity_id(next), graph->entities)) {
+ if (media_entity_enum_test_and_set(&graph->ent_enum, next)) {
link_top(graph) = link_top(graph)->next;
continue;
}