mlx4_core: Remove unused doorbell_lock

struct mlx4_priv.doorbell_lock is never used, so delete it.

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

1 files changed, 0 insertions, 2 deletions

diff --git a/drivers/net/mlx4/main.c b/drivers/net/mlx4/main.c
index 4debb024eaf9..20b8c0d3ced4 100644
--- a/drivers/net/mlx4/main.c
+++ b/drivers/net/mlx4/main.c
@@ -542,8 +542,6 @@ static int __devinit mlx4_setup_hca(struct mlx4_dev *dev)
         struct mlx4_priv *priv = mlx4_priv(dev);
         int err;
 
-        MLX4_INIT_DOORBELL_LOCK(&priv->doorbell_lock);
-
         err = mlx4_init_uar_table(dev);
         if (err) {
                 mlx4_err(dev, "Failed to initialize "