From: Lijun Ou <oulijun@huawei.com>
Date: Sat, 8 Dec 2018 10:40:09 +0000 (+0800)
Subject: RDMA/hns: Fix the bug while use multi-hop of pbl
X-Git-Tag: Ubuntu-5.0.0-8.9~922^2~97
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=4af07f01f7a787ba5158352b98c9e3cb74995a1c;p=mirror_ubuntu-disco-kernel.git

RDMA/hns: Fix the bug while use multi-hop of pbl

It will prevent multiply overflow when defines the pbl for u64 type.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
---

diff --git a/drivers/infiniband/hw/hns/hns_roce_mr.c b/drivers/infiniband/hw/hns/hns_roce_mr.c
index fabc95dbdf97..ee5991bd4171 100644
--- a/drivers/infiniband/hw/hns/hns_roce_mr.c
+++ b/drivers/infiniband/hw/hns/hns_roce_mr.c
@@ -1128,14 +1128,14 @@ struct ib_mr *hns_roce_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 			goto err_umem;
 		}
 	} else {
-		int pbl_size = 1;
+		u64 pbl_size = 1;
 
 		bt_size = (1 << (hr_dev->caps.pbl_ba_pg_sz + PAGE_SHIFT)) / 8;
 		for (i = 0; i < hr_dev->caps.pbl_hop_num; i++)
 			pbl_size *= bt_size;
 		if (n > pbl_size) {
 			dev_err(dev,
-			    " MR len %lld err. MR page num is limited to %d!\n",
+			    " MR len %lld err. MR page num is limited to %lld!\n",
 			    length, pbl_size);
 			ret = -EINVAL;
 			goto err_umem;