IB/hns: Fix for removal of redundant code

This patch removes the redundant code lines present in the
functions get_send_wqe() and get_recv_wqe(). This also fixes
the error in calculating the SQ WQE.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Reviewed-by:  Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

drivers/infiniband/hw/hns/hns_roce_hw_v1.c

@@ -1552,7 +1552,8 @@ static int hns_roce_v1_poll_one(struct hns_roce_cq *hr_cq,
 		/* SQ conrespond to CQE */
 		sq_wqe = get_send_wqe(*cur_qp, roce_get_field(cqe->cqe_byte_4,
 						CQE_BYTE_4_WQE_INDEX_M,
-						CQE_BYTE_4_WQE_INDEX_S));
+						CQE_BYTE_4_WQE_INDEX_S)&
+						((*cur_qp)->sq.wqe_cnt-1));
 		switch (sq_wqe->flag & HNS_ROCE_WQE_OPCODE_MASK) {
 		case HNS_ROCE_WQE_OPCODE_SEND:
 			wc->opcode = IB_WC_SEND;

drivers/infiniband/hw/hns/hns_roce_qp.c

@@ -784,29 +784,11 @@ static void *get_wqe(struct hns_roce_qp *hr_qp, int offset)
 
 void *get_recv_wqe(struct hns_roce_qp *hr_qp, int n)
 {
-	struct ib_qp *ibqp = &hr_qp->ibqp;
-	struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device);
-
-	if ((n < 0) || (n > hr_qp->rq.wqe_cnt)) {
-		dev_err(&hr_dev->pdev->dev, "rq wqe index:%d,rq wqe cnt:%d\r\n",
-			n, hr_qp->rq.wqe_cnt);
-		return NULL;
-	}
-
 	return get_wqe(hr_qp, hr_qp->rq.offset + (n << hr_qp->rq.wqe_shift));
 }
 
 void *get_send_wqe(struct hns_roce_qp *hr_qp, int n)
 {
-	struct ib_qp *ibqp = &hr_qp->ibqp;
-	struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device);
-
-	if ((n < 0) || (n > hr_qp->sq.wqe_cnt)) {
-		dev_err(&hr_dev->pdev->dev, "sq wqe index:%d,sq wqe cnt:%d\r\n",
-			n, hr_qp->sq.wqe_cnt);
-		return NULL;
-	}
-
 	return get_wqe(hr_qp, hr_qp->sq.offset + (n << hr_qp->sq.wqe_shift));
 }