On 10/13/21 9:15 AM, Logan Gunthorpe wrote:
quoted hunk ↗ jump to hunk
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;
}
return dma_map_sgtable(dev->dma_device, sgt, direction, dma_attrs);
Thanks!
Tested-by: Bart Van Assche <bvanassche@acm.org>