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 <[email protected]>
Signed-off-by: Saeed Mahameed <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/qp.c b/drivers/net/ethernet/mellanox/mlx5/core/qp.c
index b720a274220d95793f5803620d18db8fcae2073b..b82d65802d964a2d03d9e2a99c2719c7642d72d3 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;
 }