diff options
authorLaurent Pinchart <>2022-01-11 22:23:25 +0200
committerLaurent Pinchart <>2022-01-14 14:02:38 +0200
commitbc3d27234ed90924ae200a916afb97d1945912d5 (patch)
parenteff9de397ac37e948e5ca603814fcaba9bcd8df5 (diff)
v4l2: v4l2_camera_proxy: Zero flags in VIDIOC_REQBUFS
The V4L2 compatibility layer doesn't support any of the VIDIOC_REQBUFS flags. They are all correctly ignored, but also need to be zeroed before returning to indicate that they haven't been taken into account. This fixes a v4l2-compliance failure: Buffer ioctls (Input 0): fail: ../../utils/v4l2-compliance/v4l2-test-buffers.cpp(682): coherent test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: FAIL Fixes: aa4533639971 ("include: linux: Update kernel headers to version v5.16-rc7") Signed-off-by: Laurent Pinchart <> Tested-by: Vedant Paranjape <> Reviewed-by: Paul Elder <>
1 files changed, 1 insertions, 0 deletions
diff --git a/src/v4l2/v4l2_camera_proxy.cpp b/src/v4l2/v4l2_camera_proxy.cpp
index 4d529bc2..1802d90b 100644
--- a/src/v4l2/v4l2_camera_proxy.cpp
+++ b/src/v4l2/v4l2_camera_proxy.cpp
@@ -469,6 +469,7 @@ int V4L2CameraProxy::vidioc_reqbufs(V4L2CameraFile *file, struct v4l2_requestbuf
return -EBUSY;
arg->capabilities = V4L2_BUF_CAP_SUPPORTS_MMAP;
+ arg->flags = 0;
memset(arg->reserved, 0, sizeof(arg->reserved));
if (arg->count == 0) {