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[for-next,1/3] IB/hfi1: Unreserve a reserved request when it is completed

Message ID 20181128182159.32618.28284.stgit@scvm10.sc.intel.com (mailing list archive)
State Accepted
Delegated to: Jason Gunthorpe
Headers show
Series IB/hfi1: Start to add in OPFN | expand

Commit Message

Dennis Dalessandro Nov. 28, 2018, 6:22 p.m. UTC 
From: Kaike Wan <kaike.wan@intel.com>

Currently, When a reserved operation is completed, its entry in the
send queue will not be unreserved, which leads to the miscalculation of
qp->s_avail and thus the triggering of a WARN_ON call trace. This patch
fixes the problem by unreserving the reserved operation when it is
completed.

Fixes: 856cc4c237ad ("IB/hfi1: Add the capability for reserved operations")
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
---
 drivers/infiniband/hw/hfi1/rc.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
diff mbox series

Patch

diff --git a/drivers/infiniband/hw/hfi1/rc.c b/drivers/infiniband/hw/hfi1/rc.c
index a677f5a..be603f3 100644
--- a/drivers/infiniband/hw/hfi1/rc.c
+++ b/drivers/infiniband/hw/hfi1/rc.c
@@ -1157,6 +1157,7 @@  void hfi1_rc_send_complete(struct rvt_qp *qp, struct hfi1_opa_header *opah)
 		if (cmp_psn(wqe->lpsn, qp->s_sending_psn) >= 0 &&
 		    cmp_psn(qp->s_sending_psn, qp->s_sending_hpsn) <= 0)
 			break;
+		rvt_qp_wqe_unreserve(qp, wqe);
 		s_last = qp->s_last;
 		trace_hfi1_qp_send_completion(qp, wqe, s_last);
 		if (++s_last >= qp->s_size)
@@ -1209,6 +1210,7 @@  static inline void update_last_psn(struct rvt_qp *qp, u32 psn)
 		u32 s_last;
 
 		rvt_put_swqe(wqe);
+		rvt_qp_wqe_unreserve(qp, wqe);
 		s_last = qp->s_last;
 		trace_hfi1_qp_send_completion(qp, wqe, s_last);
 		if (++s_last >= qp->s_size)