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IB/core: Don't drain non-existent rq queue-pair 

The drain_rq function expects a normal receive qp to drain.  A qp can
only have either a normal rq or an srq.  If there is an srq, there
is no rq to drain.  Until the API supports draining SRQs, simply
skip draining the rq when the qp has an srq attached.

Fixes: 765d67748b ("IB: new common API for draining queues")
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Sagi Grimberg 2016-04-26 17:55:38 +03:00 committed by Doug Ledford
parent f4e7de63ab
commit 42235f80ab
1 changed files with 2 additions and 1 deletions
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3
drivers/infiniband/core/verbs.c
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@ -1860,6 +1860,7 @@ EXPORT_SYMBOL(ib_drain_rq);
void ib_drain_qp(struct ib_qp *qp)
{
ib_drain_sq(qp);
ib_drain_rq(qp);
if (!qp->srq)
ib_drain_rq(qp);
}
EXPORT_SYMBOL(ib_drain_qp);