diff --git a/drivers/infiniband/hw/mlx5/cq.c b/drivers/infiniband/hw/mlx5/cq.c
index 0b99f7d0630d..95a29e85522e 100644
--- a/drivers/infiniband/hw/mlx5/cq.c
+++ b/drivers/infiniband/hw/mlx5/cq.c
@@ -330,67 +330,6 @@ static void mlx5_handle_error_cqe(struct mlx5_ib_dev *dev,
 		dump_cqe(dev, cqe);
 }
 
-static int is_atomic_response(struct mlx5_ib_qp *qp, uint16_t idx)
-{
-	/* TBD: waiting decision
-	*/
-	return 0;
-}
-
-static void *mlx5_get_atomic_laddr(struct mlx5_ib_qp *qp, uint16_t idx)
-{
-	struct mlx5_wqe_data_seg *dpseg;
-	void *addr;
-
-	dpseg = mlx5_get_send_wqe(qp, idx) + sizeof(struct mlx5_wqe_ctrl_seg) +
-		sizeof(struct mlx5_wqe_raddr_seg) +
-		sizeof(struct mlx5_wqe_atomic_seg);
-	addr = (void *)(unsigned long)be64_to_cpu(dpseg->addr);
-	return addr;
-}
-
-static void handle_atomic(struct mlx5_ib_qp *qp, struct mlx5_cqe64 *cqe64,
-			  uint16_t idx)
-{
-	void *addr;
-	int byte_count;
-	int i;
-
-	if (!is_atomic_response(qp, idx))
-		return;
-
-	byte_count = be32_to_cpu(cqe64->byte_cnt);
-	addr = mlx5_get_atomic_laddr(qp, idx);
-
-	if (byte_count == 4) {
-		*(uint32_t *)addr = be32_to_cpu(*((__be32 *)addr));
-	} else {
-		for (i = 0; i < byte_count; i += 8) {
-			*(uint64_t *)addr = be64_to_cpu(*((__be64 *)addr));
-			addr += 8;
-		}
-	}
-
-	return;
-}
-
-static void handle_atomics(struct mlx5_ib_qp *qp, struct mlx5_cqe64 *cqe64,
-			   u16 tail, u16 head)
-{
-	u16 idx;
-
-	do {
-		idx = tail & (qp->sq.wqe_cnt - 1);
-		handle_atomic(qp, cqe64, idx);
-		if (idx == head)
-			break;
-
-		tail = qp->sq.w_list[idx].next;
-	} while (1);
-	tail = qp->sq.w_list[idx].next;
-	qp->sq.last_poll = tail;
-}
-
 static void free_cq_buf(struct mlx5_ib_dev *dev, struct mlx5_ib_cq_buf *buf)
 {
 	mlx5_frag_buf_free(dev->mdev, &buf->frag_buf);
@@ -428,45 +367,15 @@ static void get_sig_err_item(struct mlx5_sig_err_cqe *cqe,
 	item->key = be32_to_cpu(cqe->mkey);
 }
 
-static void sw_send_comp(struct mlx5_ib_qp *qp, int num_entries,
-			 struct ib_wc *wc, int *npolled)
-{
-	struct mlx5_ib_wq *wq;
-	unsigned int cur;
-	unsigned int idx;
-	int np;
-	int i;
-
-	wq = &qp->sq;
-	cur = wq->head - wq->tail;
-	np = *npolled;
-
-	if (cur == 0)
-		return;
-
-	for (i = 0;  i < cur && np < num_entries; i++) {
-		idx = wq->last_poll & (wq->wqe_cnt - 1);
-		wc->wr_id = wq->wrid[idx];
-		wc->status = IB_WC_WR_FLUSH_ERR;
-		wc->vendor_err = MLX5_CQE_SYNDROME_WR_FLUSH_ERR;
-		wq->tail++;
-		np++;
-		wc->qp = &qp->ibqp;
-		wc++;
-		wq->last_poll = wq->w_list[idx].next;
-	}
-	*npolled = np;
-}
-
-static void sw_recv_comp(struct mlx5_ib_qp *qp, int num_entries,
-			 struct ib_wc *wc, int *npolled)
+static void sw_comp(struct mlx5_ib_qp *qp, int num_entries, struct ib_wc *wc,
+		    int *npolled, int is_send)
 {
 	struct mlx5_ib_wq *wq;
 	unsigned int cur;
 	int np;
 	int i;
 
-	wq = &qp->rq;
+	wq = (is_send) ? &qp->sq : &qp->rq;
 	cur = wq->head - wq->tail;
 	np = *npolled;
 
@@ -493,13 +402,13 @@ static void mlx5_ib_poll_sw_comp(struct mlx5_ib_cq *cq, int num_entries,
 	*npolled = 0;
 	/* Find uncompleted WQEs belonging to that cq and return mmics ones */
 	list_for_each_entry(qp, &cq->list_send_qp, cq_send_list) {
-		sw_send_comp(qp, num_entries, wc + *npolled, npolled);
+		sw_comp(qp, num_entries, wc + *npolled, npolled, true);
 		if (*npolled >= num_entries)
 			return;
 	}
 
 	list_for_each_entry(qp, &cq->list_recv_qp, cq_recv_list) {
-		sw_recv_comp(qp, num_entries, wc + *npolled, npolled);
+		sw_comp(qp, num_entries, wc + *npolled, npolled, false);
 		if (*npolled >= num_entries)
 			return;
 	}
@@ -567,7 +476,6 @@ static int mlx5_poll_one(struct mlx5_ib_cq *cq,
 		wqe_ctr = be16_to_cpu(cqe64->wqe_counter);
 		idx = wqe_ctr & (wq->wqe_cnt - 1);
 		handle_good_req(wc, cqe64, wq, idx);
-		handle_atomics(*cur_qp, cqe64, wq->last_poll, idx);
 		wc->wr_id = wq->wrid[idx];
 		wq->tail = wq->wqe_head[idx] + 1;
 		wc->status = IB_WC_SUCCESS;
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index 8fd3de05cdba..1285ac11bb70 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -275,7 +275,6 @@ struct mlx5_ib_wq {
 	unsigned		head;
 	unsigned		tail;
 	u16			cur_post;
-	u16			last_poll;
 	void			*cur_edge;
 };
 
@@ -1070,7 +1069,6 @@ int mlx5_ib_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
 		      const struct ib_send_wr **bad_wr);
 int mlx5_ib_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
 		      const struct ib_recv_wr **bad_wr);
-void *mlx5_get_send_wqe(struct mlx5_ib_qp *qp, int n);
 int mlx5_ib_read_user_wqe(struct mlx5_ib_qp *qp, int send, int wqe_index,
 			  void *buffer, u32 length,
 			  struct mlx5_ib_qp_base *base);
diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
index 4a85748aeeea..2ceb8f68f605 100644
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -3516,7 +3516,6 @@ static int __mlx5_ib_modify_qp(struct ib_qp *ibqp,
 		qp->sq.cur_post = 0;
 		if (qp->sq.wqe_cnt)
 			qp->sq.cur_edge = get_sq_edge(&qp->sq, 0);
-		qp->sq.last_poll = 0;
 		qp->db.db[MLX5_RCV_DBR] = 0;
 		qp->db.db[MLX5_SND_DBR] = 0;
 	}