From 6e9179e2af61f93e6416c3dd11aca46dcd5a68e8 Mon Sep 17 00:00:00 2001
From: Philipp Zabel
Date: Wed, 29 Jan 2014 13:13:52 -0300
Subject: [media] uvcvideo: Enable VIDIOC_CREATE_BUFS
This patch enables the ioctl to create additional buffers on the
videobuf2 capture queue.
[laurent.pinchart@ideasonboard.com: Acquire privileges instead of just
checking them in VIDIOC_CREATE_BUFS implementation]
Signed-off-by: Philipp Zabel
Signed-off-by: Laurent Pinchart
Tested-by: Philipp Zabel
Signed-off-by: Mauro Carvalho Chehab
---
drivers/media/usb/uvc/uvc_queue.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
(limited to 'drivers/media/usb/uvc/uvc_queue.c')
diff --git a/drivers/media/usb/uvc/uvc_queue.c b/drivers/media/usb/uvc/uvc_queue.c
index d46dd7011ed3..ff7be9702486 100644
--- a/drivers/media/usb/uvc/uvc_queue.c
+++ b/drivers/media/usb/uvc/uvc_queue.c
@@ -198,6 +198,18 @@ int uvc_query_buffer(struct uvc_video_queue *queue, struct v4l2_buffer *buf)
return ret;
}
+int uvc_create_buffers(struct uvc_video_queue *queue,
+ struct v4l2_create_buffers *cb)
+{
+ int ret;
+
+ mutex_lock(&queue->mutex);
+ ret = vb2_create_bufs(&queue->queue, cb);
+ mutex_unlock(&queue->mutex);
+
+ return ret;
+}
+
int uvc_queue_buffer(struct uvc_video_queue *queue, struct v4l2_buffer *buf)
{
int ret;
--
cgit