1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/media/video/uvc/uvc_queue.c b/drivers/media/video/uvc/uvc_queue.c
index 0155752e4a5a..f854698c4061 100644
--- a/drivers/media/video/uvc/uvc_queue.c
+++ b/drivers/media/video/uvc/uvc_queue.c
@@ -172,6 +172,20 @@ int uvc_free_buffers(struct uvc_video_queue *queue)
         return 0;
 }
 
+/*
+ * Check if buffers have been allocated.
+ */
+int uvc_queue_allocated(struct uvc_video_queue *queue)
+{
+        int allocated;
+
+        mutex_lock(&queue->mutex);
+        allocated = queue->count != 0;
+        mutex_unlock(&queue->mutex);
+
+        return allocated;
+}
+
 static void __uvc_query_buffer(struct uvc_buffer *buf,
                 struct v4l2_buffer *v4l2_buf)
 {