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

commit 9cd3411c42c5d5ba55d6e745edfe7df53c1ffa41 upstream.

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>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/qp.c b/drivers/net/ethernet/mellanox/mlx5/core/qp.c
index 8145b4668229d6a483e9b36fdc457387a6c6ab41..e7c94a58864b981916768eccdf13b64c1003282d 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/qp.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/qp.c
@@ -274,7 +274,7 @@ 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;
 }