net/mlx4_core: Initialize all mailbox buffers to zero before use

[cascardo/linux.git] / drivers / infiniband / hw / mlx4 / main.c

diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index 7567437..6a0a0d2 100644 (file)
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -526,7 +526,6 @@ static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
        if (IS_ERR(mailbox))
                return 0;
 
-       memset(mailbox->buf, 0, 256);
        memcpy(mailbox->buf, props->node_desc, 64);
        mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
                 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
@@ -547,8 +546,6 @@ static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
        if (IS_ERR(mailbox))
                return PTR_ERR(mailbox);
 
-       memset(mailbox->buf, 0, 256);
-
        if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
                *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
                ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
@@ -879,8 +876,6 @@ static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_att
        struct mlx4_ib_dev *mdev = to_mdev(qp->device);
        struct mlx4_cmd_mailbox *mailbox;
        struct mlx4_net_trans_rule_hw_ctrl *ctrl;
-       size_t rule_size = sizeof(struct mlx4_net_trans_rule_hw_ctrl) +
-                          (sizeof(struct _rule_hw) * flow_attr->num_of_specs);
 
        static const u16 __mlx4_domain[] = {
                [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS,
@@ -905,7 +900,6 @@ static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_att
        mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
        if (IS_ERR(mailbox))
                return PTR_ERR(mailbox);
-       memset(mailbox->buf, 0, rule_size);
        ctrl = mailbox->buf;
 
        ctrl->prio = cpu_to_be16(__mlx4_domain[domain] |