diff options
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/media-request.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/media/media-request.c b/drivers/media/media-request.c index 8d3c7360c8f3..4b0ce8fde7c9 100644 --- a/drivers/media/media-request.c +++ b/drivers/media/media-request.c @@ -342,6 +342,31 @@ static void media_request_object_release(struct kref *kref) obj->ops->release(obj); } +struct media_request_object * +media_request_object_find(struct media_request *req, + const struct media_request_object_ops *ops, + void *priv) +{ + struct media_request_object *obj; + struct media_request_object *found = NULL; + unsigned long flags; + + if (WARN_ON(!ops || !priv)) + return NULL; + + spin_lock_irqsave(&req->lock, flags); + list_for_each_entry(obj, &req->objects, list) { + if (obj->ops == ops && obj->priv == priv) { + media_request_object_get(obj); + found = obj; + break; + } + } + spin_unlock_irqrestore(&req->lock, flags); + return found; +} +EXPORT_SYMBOL_GPL(media_request_object_find); + void media_request_object_put(struct media_request_object *obj) { kref_put(&obj->kref, media_request_object_release); |