diff --git a/drivers/infiniband/hw/hns/hns_roce_device.h b/drivers/infiniband/hw/hns/hns_roce_device.h
index 0bf994984217..ebfb0998bced 100644
--- a/drivers/infiniband/hw/hns/hns_roce_device.h
+++ b/drivers/infiniband/hw/hns/hns_roce_device.h
@@ -665,6 +665,7 @@ struct hns_roce_caps {
 	u32		max_sq_sg;	/* 2 */
 	u32		max_sq_inline;	/* 32 */
 	u32		max_rq_sg;	/* 2 */
+	u32		max_extend_sg;
 	int		num_qps;	/* 256k */
 	int             reserved_qps;
 	u32		max_wqes;	/* 16k */
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index 7a7232927b12..9e7923cf8577 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -1194,6 +1194,7 @@ static int hns_roce_v2_profile(struct hns_roce_dev *hr_dev)
 	caps->num_cqs		= HNS_ROCE_V2_MAX_CQ_NUM;
 	caps->max_cqes		= HNS_ROCE_V2_MAX_CQE_NUM;
 	caps->max_sq_sg		= HNS_ROCE_V2_MAX_SQ_SGE_NUM;
+	caps->max_extend_sg	= HNS_ROCE_V2_MAX_EXTEND_SGE_NUM;
 	caps->max_rq_sg		= HNS_ROCE_V2_MAX_RQ_SGE_NUM;
 	caps->max_sq_inline	= HNS_ROCE_V2_MAX_SQ_INLINE;
 	caps->num_uars		= HNS_ROCE_V2_UAR_NUM;
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
index cd276b0b1647..2c3e600db9ce 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
@@ -50,6 +50,7 @@
 #define HNS_ROCE_V2_MAX_CQE_NUM			0x10000
 #define HNS_ROCE_V2_MAX_RQ_SGE_NUM		0x100
 #define HNS_ROCE_V2_MAX_SQ_SGE_NUM		0xff
+#define HNS_ROCE_V2_MAX_EXTEND_SGE_NUM		0x200000
 #define HNS_ROCE_V2_MAX_SQ_INLINE		0x20
 #define HNS_ROCE_V2_UAR_NUM			256
 #define HNS_ROCE_V2_PHY_UAR_NUM			1
diff --git a/drivers/infiniband/hw/hns/hns_roce_qp.c b/drivers/infiniband/hw/hns/hns_roce_qp.c
index cb926ced4021..54d22868ffba 100644
--- a/drivers/infiniband/hw/hns/hns_roce_qp.c
+++ b/drivers/infiniband/hw/hns/hns_roce_qp.c
@@ -31,6 +31,7 @@
  * SOFTWARE.
  */
 
+#include <linux/pci.h>
 #include <linux/platform_device.h>
 #include <rdma/ib_addr.h>
 #include <rdma/ib_umem.h>
@@ -372,6 +373,16 @@ static int hns_roce_set_user_sq_size(struct hns_roce_dev *hr_dev,
 	if (hr_qp->sq.max_gs > 2)
 		hr_qp->sge.sge_cnt = roundup_pow_of_two(hr_qp->sq.wqe_cnt *
 							(hr_qp->sq.max_gs - 2));
+
+	if ((hr_qp->sq.max_gs > 2) && (hr_dev->pci_dev->revision == 0x20)) {
+		if (hr_qp->sge.sge_cnt > hr_dev->caps.max_extend_sg) {
+			dev_err(hr_dev->dev,
+				"The extended sge cnt error! sge_cnt=%d\n",
+				hr_qp->sge.sge_cnt);
+			return -EINVAL;
+		}
+	}
+
 	hr_qp->sge.sge_shift = 4;
 
 	/* Get buf size, SQ and RQ  are aligned to page_szie */
@@ -465,6 +476,14 @@ static int hns_roce_set_kernel_sq_size(struct hns_roce_dev *hr_dev,
 		hr_qp->sge.sge_shift = 4;
 	}
 
+	if ((hr_qp->sq.max_gs > 2) && hr_dev->pci_dev->revision == 0x20) {
+		if (hr_qp->sge.sge_cnt > hr_dev->caps.max_extend_sg) {
+			dev_err(dev, "The extended sge cnt error! sge_cnt=%d\n",
+				hr_qp->sge.sge_cnt);
+			return -EINVAL;
+		}
+	}
+
 	/* Get buf size, SQ and RQ are aligned to PAGE_SIZE */
 	page_size = 1 << (hr_dev->caps.mtt_buf_pg_sz + PAGE_SHIFT);
 	hr_qp->sq.offset = 0;