mlx4_core: Fix meaning of dev->caps.reserved_mtts

Everything that uses caps.reserved_mtts expects it to be a count of MTT
segments, not MTT entries.  So convert the value that the FW gives us to
a count of segments.

Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/net/mlx4/main.c b/drivers/net/mlx4/main.c
index 07c2847a7cc8..ed7e8d76cde0 100644
--- a/drivers/net/mlx4/main.c
+++ b/drivers/net/mlx4/main.c
@@ -149,7 +149,8 @@ static int __devinit mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev
         dev->caps.max_cqes           = dev_cap->max_cq_sz - 1;
         dev->caps.reserved_cqs       = dev_cap->reserved_cqs;
         dev->caps.reserved_eqs       = dev_cap->reserved_eqs;
-        dev->caps.reserved_mtts      = dev_cap->reserved_mtts;
+        dev->caps.reserved_mtts      = DIV_ROUND_UP(dev_cap->reserved_mtts,
+                                                    MLX4_MTT_ENTRY_PER_SEG);
         dev->caps.reserved_mrws      = dev_cap->reserved_mrws;
         dev->caps.reserved_uars      = dev_cap->reserved_uars;
         dev->caps.reserved_pds       = dev_cap->reserved_pds;