diff options
| author |   Selvin Xavier <selvin.xavier@broadcom.com> | 2017-11-06 08:07:32 -0800 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2017-11-13 15:53:57 -0500 |
| commit | 051276658b86729909fb6e28e1fabab11c109615 (patch) | |
| tree | 550ddfada11d29b8642a77ad32d89b2bfd776a98 /drivers/infiniband/hw/bnxt_re | |
| parent | RDMA/bnxt_re: Flush CQ notification Work Queue before destroying QP (diff) | |
| download | linux-dev-051276658b86729909fb6e28e1fabab11c109615.tar.xz linux-dev-051276658b86729909fb6e28e1fabab11c109615.zip | |
RDMA/bnxt_re: synchronize poll_cq and req_notify_cq verbs
Synchronize poll_cq and req_notify_cq verbs using cq_lock,
instead of the lower level qplib->hwq.lock.
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/bnxt_re')
| -rw-r--r-- | drivers/infiniband/hw/bnxt_re/ib_verbs.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c index c29f33af334b..526ab3f10a90 100644 --- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c +++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c @@ -2996,8 +2996,10 @@ int bnxt_re_req_notify_cq(struct ib_cq *ib_cq, enum ib_cq_notify_flags ib_cqn_flags) { struct bnxt_re_cq *cq = container_of(ib_cq, struct bnxt_re_cq, ib_cq); - int type = 0; + int type = 0, rc = 0; + unsigned long flags; + spin_lock_irqsave(&cq->cq_lock, flags); /* Trigger on the very next completion */ if (ib_cqn_flags & IB_CQ_NEXT_COMP) type = DBR_DBR_TYPE_CQ_ARMALL; @@ -3007,12 +3009,15 @@ int bnxt_re_req_notify_cq(struct ib_cq *ib_cq, /* Poll to see if there are missed events */ if ((ib_cqn_flags & IB_CQ_REPORT_MISSED_EVENTS) && - !(bnxt_qplib_is_cq_empty(&cq->qplib_cq))) - return 1; - + !(bnxt_qplib_is_cq_empty(&cq->qplib_cq))) { + rc = 1; + goto exit; + } bnxt_qplib_req_notify_cq(&cq->qplib_cq, type); - return 0; +exit: + spin_unlock_irqrestore(&cq->cq_lock, flags); + return rc; } /* Memory Regions */ |