mlx5_vsc_read
int mlx5_vsc_read(struct mlx5_core_dev *mdev, u32 addr, u32 *data);
error = mlx5_vsc_read(mdev, r->addr + ri * 4,
ret = mlx5_vsc_read(mdev, addr, &data);
ret = mlx5_vsc_read(mdev, addr, &data);