[PATCH 4.9 016/130] IB/rxe: Fix missing completion for mem_reg work requests

[Greg Kroah-Hartman]

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Vijay Immanuel <vij...@attalasystems.com>

[ Upstream commit 375dc53d032fc11e98036b5f228ad13f7c5933f5 ]

Run the completer task to post a work completion after processing
a memory registration or invalidate work request. This covers the
case where the memory registration or invalidate was the last work
request posted to the qp.

Signed-off-by: Vijay Immanuel <vij...@attalasystems.com>
Reviewed-by: Yonatan Cohen <yonat...@mellanox.com>
Signed-off-by: Jason Gunthorpe <j...@mellanox.com>
Signed-off-by: Sasha Levin <alexander.le...@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 drivers/infiniband/sw/rxe/rxe_req.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/infiniband/sw/rxe/rxe_req.c
+++ b/drivers/infiniband/sw/rxe/rxe_req.c
@@ -648,6 +648,9 @@ next_wqe:
                } else {
                        goto exit;
                }
+               if ((wqe->wr.send_flags & IB_SEND_SIGNALED) ||
+                   qp->sq_sig_type == IB_SIGNAL_ALL_WR)
+                       rxe_run_task(&qp->comp.task, 1);
                qp->req.wqe_index = next_index(qp->sq.queue,
                                                qp->req.wqe_index);
                goto next_wqe;