mlx5: Fix mlx5_ib_map_mr_sg mr length

In case we got an initial sg_offset, we need to
account for it in the mr length.

Cc: [email protected]
Fixes: ff2ba9936591 ("IB/core: Add passing an offset into the SG to
ib_map_mr_sg")
Signed-off-by: Sagi Grimberg <[email protected]>
Tested-by: Israel Rukshin <[email protected]>
Signed-off-by: Doug Ledford <[email protected]>

diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c
index 93c0e82aa4913d112ee14b3d1d613563f04f7a86..366433f71b588e4c43a41c030f4840df9a17f528 100644 (file)
--- a/drivers/infiniband/hw/mlx5/mr.c
+++ b/drivers/infiniband/hw/mlx5/mr.c
@@ -1784,7 +1784,7 @@ mlx5_ib_sg_to_klms(struct mlx5_ib_mr *mr,
                klms[i].va = cpu_to_be64(sg_dma_address(sg) + sg_offset);
                klms[i].bcount = cpu_to_be32(sg_dma_len(sg) - sg_offset);
                klms[i].key = cpu_to_be32(lkey);
-               mr->ibmr.length += sg_dma_len(sg);
+               mr->ibmr.length += sg_dma_len(sg) - sg_offset;
 
                sg_offset = 0;
        }