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RDMA/hns: Fix unmatched condition in error path of alloc_user_qp_db()

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[ Upstream commit b9f59a24ba35a7d955a9f8e148dd9f85b7b40a01 ]

Currently the condition of unmapping sdb in error path is not exactly
the same as the condition of mapping in alloc_user_qp_db(). This may
cause a problem of unmapping an unmapped db in some case, such as
when the QP is XRC TGT. Unified the two conditions.

Fixes: 90ae0b57e4 ("RDMA/hns: Combine enable flags of qp")
Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
Link: https://patch.msgid.link/20250311084857.3803665-4-huangjunxian6@hisilicon.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Junxian Huang
2025-03-11 16:48:53 +08:00
committed by Greg Kroah-Hartman
parent 4104b0023f
commit 21c3be4924
1 changed files with 5 additions and 3 deletions
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8
drivers/infiniband/hw/hns/hns_roce_qp.c
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@@ -924,12 +924,14 @@ static int alloc_user_qp_db(struct hns_roce_dev *hr_dev,
struct hns_roce_ib_create_qp *ucmd,
struct hns_roce_ib_create_qp_resp *resp)
{
bool has_sdb = user_qp_has_sdb(hr_dev, init_attr, udata, resp, ucmd);
struct hns_roce_ucontext *uctx = rdma_udata_to_drv_context(udata,
struct hns_roce_ucontext, ibucontext);
bool has_rdb = user_qp_has_rdb(hr_dev, init_attr, udata, resp);
struct ib_device *ibdev = &hr_dev->ib_dev;
int ret;
if (user_qp_has_sdb(hr_dev, init_attr, udata, resp, ucmd)) {
if (has_sdb) {
ret = hns_roce_db_map_user(uctx, ucmd->sdb_addr, &hr_qp->sdb);
if (ret) {
ibdev_err(ibdev,
@@ -940,7 +942,7 @@ static int alloc_user_qp_db(struct hns_roce_dev *hr_dev,
hr_qp->en_flags |= HNS_ROCE_QP_CAP_SQ_RECORD_DB;
}
if (user_qp_has_rdb(hr_dev, init_attr, udata, resp)) {
if (has_rdb) {
ret = hns_roce_db_map_user(uctx, ucmd->db_addr, &hr_qp->rdb);
if (ret) {
ibdev_err(ibdev,
@@ -954,7 +956,7 @@ static int alloc_user_qp_db(struct hns_roce_dev *hr_dev,
return 0;
err_sdb:
if (hr_qp->en_flags & HNS_ROCE_QP_CAP_SQ_RECORD_DB)
if (has_sdb)
hns_roce_db_unmap_user(uctx, &hr_qp->sdb);
err_out:
return ret;