From ab86e9e03d322396907dc8eb9215b136c728773e Mon Sep 17 00:00:00 2001
From: Javier Martin <javier.martin@vista-silicon.com>
Date: Mon, 2 Jan 2012 11:12:23 -0300
Subject: [PATCH] [media] uvcvideo: Allow userptr IO mode
Userptr can be very useful if a UVC camera is requested to use video
buffers allocated by another processing device. So that buffers don't
need to be copied.
Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---
drivers/media/video/uvc/uvc_queue.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/video/uvc/uvc_queue.c b/drivers/media/video/uvc/uvc_queue.c
index 518f77d3a4d8..8f54e24e3f35 100644
--- a/drivers/media/video/uvc/uvc_queue.c
+++ b/drivers/media/video/uvc/uvc_queue.c
@@ -126,7 +126,7 @@ void uvc_queue_init(struct uvc_video_queue *queue, enum v4l2_buf_type type,
int drop_corrupted)
{
queue->queue.type = type;
- queue->queue.io_modes = VB2_MMAP;
+ queue->queue.io_modes = VB2_MMAP | VB2_USERPTR;
queue->queue.drv_priv = queue;
queue->queue.buf_struct_size = sizeof(struct uvc_buffer);
queue->queue.ops = &uvc_queue_qops;
--
2.34.1