diff options
Diffstat (limited to 'drivers/media/mc')
| -rw-r--r-- | drivers/media/mc/mc-entity.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/media/mc/mc-entity.c b/drivers/media/mc/mc-entity.c index 767846b216c5..afd1bd7ff7b6 100644 --- a/drivers/media/mc/mc-entity.c +++ b/drivers/media/mc/mc-entity.c @@ -960,6 +960,37 @@ media_entity_remote_pad_unique(const struct media_entity *entity, } EXPORT_SYMBOL_GPL(media_entity_remote_pad_unique); +struct media_pad *media_pad_remote_pad_unique(const struct media_pad *pad) +{ + struct media_pad *found_pad = NULL; + struct media_link *link; + + list_for_each_entry(link, &pad->entity->links, list) { + struct media_pad *remote_pad; + + if (!(link->flags & MEDIA_LNK_FL_ENABLED)) + continue; + + if (link->sink == pad) + remote_pad = link->source; + else if (link->source == pad) + remote_pad = link->sink; + else + continue; + + if (found_pad) + return ERR_PTR(-ENOTUNIQ); + + found_pad = remote_pad; + } + + if (!found_pad) + return ERR_PTR(-ENOLINK); + + return found_pad; +} +EXPORT_SYMBOL_GPL(media_pad_remote_pad_unique); + static void media_interface_init(struct media_device *mdev, struct media_interface *intf, u32 gobj_type, |