MLX4_EN_CQ_STATE_NAPI
#define MLX4_CQ_LOCKED (MLX4_EN_CQ_STATE_NAPI | MLX4_EN_CQ_STATE_POLL)
WARN_ON(cq->state & MLX4_EN_CQ_STATE_NAPI);
cq->state = MLX4_EN_CQ_STATE_NAPI;
WARN_ON(cq->state & (MLX4_EN_CQ_STATE_NAPI));