MLX5_INIT_DOORBELL_LOCK   46 include/linux/mlx5/doorbell.h #define MLX5_INIT_DOORBELL_LOCK(ptr)    do { } while (0)
MLX5_INIT_DOORBELL_LOCK   63 include/linux/mlx5/doorbell.h #define MLX5_INIT_DOORBELL_LOCK(ptr)     spin_lock_init(ptr)