mlx4_READ_ENTRY
err = mlx4_READ_ENTRY(dev, prev, mailbox);
err = mlx4_READ_ENTRY(dev, amgm_index, mailbox);
err = mlx4_READ_ENTRY(dev, prev, mailbox);
err = mlx4_READ_ENTRY(dev, index, mailbox);
if (mlx4_READ_ENTRY(dev, index, mailbox))
err = mlx4_READ_ENTRY(dev, entry->index, mailbox);
err = mlx4_READ_ENTRY(dev,
err = mlx4_READ_ENTRY(dev, *index, mgm_mailbox);