Hi Christoph, On Tue, Sep 15, 2020 at 05:51:05PM +0200, Christoph Hellwig wrote: > From: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx> > > The patch partially reverts some of the UAPI bits of the buffer > cache management hints. Namely, the queue consistency (memory > coherency) user-space hint because, as it turned out, the kernel > implementation of this feature was misusing DMA_ATTR_NON_CONSISTENT. > > The patch revers both kernel and user space parts: removes the > DMA consistency attr functions, rollbacks changes to v4l2_requestbuffers, > v4l2_create_buffers structures and corresponding UAPI functions > (plus compat32 layer) and cleanups the documentation. > > Signed-off-by: Christoph Hellwig <hch@xxxxxx> > Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx> > Signed-off-by: Christoph Hellwig <hch@xxxxxx> > --- > .../userspace-api/media/v4l/buffer.rst | 17 ------- > .../media/v4l/vidioc-create-bufs.rst | 6 +-- > .../media/v4l/vidioc-reqbufs.rst | 12 +---- > .../media/common/videobuf2/videobuf2-core.c | 46 +++---------------- > .../common/videobuf2/videobuf2-dma-contig.c | 19 -------- > .../media/common/videobuf2/videobuf2-dma-sg.c | 3 +- > .../media/common/videobuf2/videobuf2-v4l2.c | 18 +------- > drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 10 +--- > drivers/media/v4l2-core/v4l2-ioctl.c | 5 +- > include/media/videobuf2-core.h | 7 +-- > include/uapi/linux/videodev2.h | 13 +----- > 11 files changed, 22 insertions(+), 134 deletions(-) Acked-by: Tomasz Figa <tfiga@xxxxxxxxxxxx> Best regards, Tomasz
