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RDMA/bnxt_re: synchronize poll_cq and req_notify_cq verbs

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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>
This commit is contained in:
Selvin Xavier 2017-11-06 08:07:32 -08:00 committed by Doug Ledford
parent c88a7858d7
commit 051276658b
1 changed files with 10 additions and 5 deletions
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15
drivers/infiniband/hw/bnxt_re/ib_verbs.c
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@ -2996,8 +2996,10 @@ int bnxt_re_req_notify_cq(struct ib_cq *ib_cq,
enum ib_cq_notify_flags ib_cqn_flags) enum ib_cq_notify_flags ib_cqn_flags)
{ {
struct bnxt_re_cq *cq = container_of(ib_cq, struct bnxt_re_cq, ib_cq); 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 */ /* Trigger on the very next completion */
if (ib_cqn_flags & IB_CQ_NEXT_COMP) if (ib_cqn_flags & IB_CQ_NEXT_COMP)
type = DBR_DBR_TYPE_CQ_ARMALL; 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 */ /* Poll to see if there are missed events */
if ((ib_cqn_flags & IB_CQ_REPORT_MISSED_EVENTS) && if ((ib_cqn_flags & IB_CQ_REPORT_MISSED_EVENTS) &&
!(bnxt_qplib_is_cq_empty(&cq->qplib_cq))) !(bnxt_qplib_is_cq_empty(&cq->qplib_cq))) {
return 1; rc = 1;
goto exit;
}
bnxt_qplib_req_notify_cq(&cq->qplib_cq, type); bnxt_qplib_req_notify_cq(&cq->qplib_cq, type);
return 0; exit:
spin_unlock_irqrestore(&cq->cq_lock, flags);
return rc;
} }
/* Memory Regions */ /* Memory Regions */