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RDMA/hns: Fix return in hns_roce_rereg_user_mr()
author
YueHaibing
<yuehaibing@huawei.com>
Wed, 4 Aug 2021 12:59:39 +0000
(20:59 +0800)
committer
Jason Gunthorpe
<jgg@nvidia.com>
Thu, 19 Aug 2021 14:12:04 +0000
(11:12 -0300)
If re-registering an MR in hns_roce_rereg_user_mr(), we should return NULL
instead of passing 0 to ERR_PTR for clarity.
Fixes:
4e9fc1dae2a9
("RDMA/hns: Optimize the MR registration process")
Link:
https://lore.kernel.org/r/20210804125939.20516-1-yuehaibing@huawei.com
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
drivers/infiniband/hw/hns/hns_roce_mr.c
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diff --git
a/drivers/infiniband/hw/hns/hns_roce_mr.c
b/drivers/infiniband/hw/hns/hns_roce_mr.c
index
006c84b
..
7089ac7
100644
(file)
--- a/
drivers/infiniband/hw/hns/hns_roce_mr.c
+++ b/
drivers/infiniband/hw/hns/hns_roce_mr.c
@@
-352,7
+352,9
@@
struct ib_mr *hns_roce_rereg_user_mr(struct ib_mr *ibmr, int flags, u64 start,
free_cmd_mbox:
hns_roce_free_cmd_mailbox(hr_dev, mailbox);
- return ERR_PTR(ret);
+ if (ret)
+ return ERR_PTR(ret);
+ return NULL;
}
int hns_roce_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata)