diff options
| -rw-r--r-- | include/rdma/ib_verbs.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 7688720411a3..61c73adccbbd 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -4105,8 +4105,13 @@ static inline int ib_dma_map_sgtable_attrs(struct ib_device *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; } return dma_map_sgtable(dev->dma_device, sgt, direction, dma_attrs); |