On Wed, Oct 13, 2021 at 10:15:59AM -0600, Logan Gunthorpe wrote:
> diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
> index 4b50d9a3018a..4ba642fc8a19 100644
> --- a/include/rdma/ib_verbs.h
> +++ b/include/rdma/ib_verbs.h
> @@ -4097,8 +4097,13 @@ static inline int ib_dma_map_sgtable_attrs(struct ib_dev>
> enum dma_data_direction direction,
> unsigned long dma_attrs)
> {
> + int nents;
> +
> if (ib_uses_virt_dma(dev)) {
> - ib_dma_virt_map_sg(dev, sgt->sgl, sgt->orig_nents);
> + nents = ib_dma_virt_map_sg(dev, sgt->sgl, sgt->orig_nents);
> + if (!nents)
> + return -EIO;
> + sgt->nents = nents;
> return 0;
> }
Oh yes, that definitely looks needed.
Jason
