net/mlx5: Fix masking of reserved bits in XRCD number

Mask the reserved bits when reading the number of newly
created XRCD.

Fixes: e126ba97dba9 ('mlx5: Add driver for Mellanox Connect-IB adapters')
Signed-off-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/qp.c b/drivers/net/ethernet/mellanox/mlx5/core/qp.c
index b720a27..b82d658 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/qp.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/qp.c
@@ -418,7 +418,7 @@ int mlx5_core_xrcd_alloc(struct mlx5_core_dev *dev, u32 *xrcdn)
        if (out.hdr.status)
                err = mlx5_cmd_status_to_err(&out.hdr);
        else
-               *xrcdn = be32_to_cpu(out.xrcdn);
+               *xrcdn = be32_to_cpu(out.xrcdn) & 0xffffff;
 
        return err;
 }