6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Marek Szyprowski m.szyprowski@samsung.com
commit a704a3c503ae1cfd9de8a2e2d16a0c9430e98162 upstream.
Use common wrappers operating directly on the struct sg_table objects to fix incorrect use of scatterlists sync calls. dma_sync_sg_for_*() functions have to be called with the number of elements originally passed to dma_map_sg_*() function, not the one returned in sgt->nents.
Fixes: d4db5eb57cab ("media: videobuf2: add begin/end cpu_access callbacks to dma-sg") CC: stable@vger.kernel.org Signed-off-by: Marek Szyprowski m.szyprowski@samsung.com Reviewed-by: Sergey Senozhatsky senozhatsky@chromium.org Acked-by: Tomasz Figa tfiga@chromium.org Signed-off-by: Hans Verkuil hverkuil@xs4all.nl Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/media/common/videobuf2/videobuf2-dma-sg.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/media/common/videobuf2/videobuf2-dma-sg.c +++ b/drivers/media/common/videobuf2/videobuf2-dma-sg.c @@ -469,7 +469,7 @@ vb2_dma_sg_dmabuf_ops_begin_cpu_access(s struct vb2_dma_sg_buf *buf = dbuf->priv; struct sg_table *sgt = buf->dma_sgt;
- dma_sync_sg_for_cpu(buf->dev, sgt->sgl, sgt->nents, buf->dma_dir); + dma_sync_sgtable_for_cpu(buf->dev, sgt, buf->dma_dir); return 0; }
@@ -480,7 +480,7 @@ vb2_dma_sg_dmabuf_ops_end_cpu_access(str struct vb2_dma_sg_buf *buf = dbuf->priv; struct sg_table *sgt = buf->dma_sgt;
- dma_sync_sg_for_device(buf->dev, sgt->sgl, sgt->nents, buf->dma_dir); + dma_sync_sgtable_for_device(buf->dev, sgt, buf->dma_dir); return 0; }