Hello, This series adds a new V4L2 event, V4L2_EVENT_XFER_ERROR. This new event is intended to be used when a device in the capturing pipeline encounters an unrecoverable error and needs to inform the capturing application thru the video node about the error. The fist use-case for this is also demonstrated in this series by the R-Car CSI-2 receiver that generates the new event when it detects an error on the bus. Patch 1/4 is a bug fix for the R-Car VIN driver that was found while working on this series. This patch is good to be picked-up on it's own but is a requirement for later patches in this series so I have opted to include it here as the first patch. Patch 2/4 adds the new V4L2 event. While patch 3/4 and 4/4 makes use of it in the R-Car capture pipeline. Careful readers will note that the last to patches already have a patch history. This is because they have been part of an earlier attempt a while back to solve this issue in a different way, and during those discussions the need for this new event was found. Niklas Söderlund (4): media: rcar-vin: Free buffers with error if hardware stop fails media: videobuf2: Add a transfer error event rcar-vin: Stop stream when subdevice signal transfer error rcar-csi2: Do not try to recover after transfer error .../userspace-api/media/v4l/vidioc-dqevent.rst | 5 +++++ .../media/videodev2.h.rst.exceptions | 1 + drivers/media/platform/rcar-vin/rcar-csi2.c | 17 +++++++++-------- drivers/media/platform/rcar-vin/rcar-dma.c | 10 ++++++++++ drivers/media/platform/rcar-vin/rcar-v4l2.c | 17 ++++++++++++++++- include/uapi/linux/videodev2.h | 1 + 6 files changed, 42 insertions(+), 9 deletions(-) -- 2.33.1
