diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index 322f341f4145..518b38e9158d 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -247,7 +247,7 @@ static bool check_inl_data_len(struct hns_roce_qp *qp, unsigned int len)
 	struct hns_roce_dev *hr_dev = to_hr_dev(qp->ibqp.device);
 	int mtu = ib_mtu_enum_to_int(qp->path_mtu);
 
-	if (len > qp->max_inline_data || len > mtu) {
+	if (mtu < 0 || len > qp->max_inline_data || len > mtu) {
 		ibdev_err(&hr_dev->ib_dev,
 			  "invalid length of data, data len = %u, max inline len = %u, path mtu = %d.\n",
 			  len, qp->max_inline_data, mtu);