3 files changed, 27 insertions, 0 deletions
diff --git a/drivers/media/usb/uvc/uvc_queue.c b/drivers/media/usb/uvc/uvc_queue.c
index 87a19f33e460..f16b9b42689d 100644
--- a/drivers/media/usb/uvc/uvc_queue.c
+++ b/drivers/media/usb/uvc/uvc_queue.c
@@ -270,6 +270,18 @@ int uvc_queue_buffer(struct uvc_video_queue *queue, struct v4l2_buffer *buf)
 	return ret;
 }
 
+int uvc_export_buffer(struct uvc_video_queue *queue,
+		      struct v4l2_exportbuffer *exp)
+{
+	int ret;
+
+	mutex_lock(&queue->mutex);
+	ret = vb2_expbuf(&queue->queue, exp);
+	mutex_unlock(&queue->mutex);
+
+	return ret;
+}
+
 int uvc_dequeue_buffer(struct uvc_video_queue *queue, struct v4l2_buffer *buf,
 		       int nonblocking)
 {
diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c
index c4b1ac6750d8..69d01803e0aa 100644
--- a/drivers/media/usb/uvc/uvc_v4l2.c
+++ b/drivers/media/usb/uvc/uvc_v4l2.c
@@ -723,6 +723,18 @@ static int uvc_ioctl_qbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
 	return uvc_queue_buffer(&stream->queue, buf);
 }
 
+static int uvc_ioctl_expbuf(struct file *file, void *fh,
+			    struct v4l2_exportbuffer *exp)
+{
+	struct uvc_fh *handle = fh;
+	struct uvc_streaming *stream = handle->stream;
+
+	if (!uvc_has_privileges(handle))
+		return -EBUSY;
+
+	return uvc_export_buffer(&stream->queue, exp);
+}
+
 static int uvc_ioctl_dqbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
 {
 	struct uvc_fh *handle = fh;
@@ -1478,6 +1490,7 @@ const struct v4l2_ioctl_ops uvc_ioctl_ops = {
 	.vidioc_reqbufs = uvc_ioctl_reqbufs,
 	.vidioc_querybuf = uvc_ioctl_querybuf,
 	.vidioc_qbuf = uvc_ioctl_qbuf,
+	.vidioc_expbuf = uvc_ioctl_expbuf,
 	.vidioc_dqbuf = uvc_ioctl_dqbuf,
 	.vidioc_create_bufs = uvc_ioctl_create_bufs,
 	.vidioc_streamon = uvc_ioctl_streamon,
diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
index 1b594c203992..ead00a83df04 100644
--- a/drivers/media/usb/uvc/uvcvideo.h
+++ b/drivers/media/usb/uvc/uvcvideo.h
@@ -635,6 +635,8 @@ extern int uvc_create_buffers(struct uvc_video_queue *queue,
 		struct v4l2_create_buffers *v4l2_cb);
 extern int uvc_queue_buffer(struct uvc_video_queue *queue,
 		struct v4l2_buffer *v4l2_buf);
+extern int uvc_export_buffer(struct uvc_video_queue *queue,
+		struct v4l2_exportbuffer *exp);
 extern int uvc_dequeue_buffer(struct uvc_video_queue *queue,
 		struct v4l2_buffer *v4l2_buf, int nonblocking);
 extern int uvc_queue_streamon(struct uvc_video_queue *queue,