2 files changed, 8 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/ipath/ipath_rc.c b/drivers/infiniband/hw/ipath/ipath_rc.c
index 5b5276a270bc..108df667d2ee 100644
--- a/drivers/infiniband/hw/ipath/ipath_rc.c
+++ b/drivers/infiniband/hw/ipath/ipath_rc.c
@@ -1189,6 +1189,7 @@ static inline void ipath_rc_rcv_resp(struct ipath_ibdev *dev,
                 wqe = get_swqe_ptr(qp, qp->s_last);
                 if (unlikely(wqe->wr.opcode != IB_WR_RDMA_READ))
                         goto ack_op_err;
+                qp->r_flags &= ~IPATH_R_RDMAR_SEQ;
                 /*
                  * If this is a response to a resent RDMA read, we
                  * have to be careful to copy the data to the right
@@ -1202,6 +1203,9 @@ static inline void ipath_rc_rcv_resp(struct ipath_ibdev *dev,
                 /* no AETH, no ACK */
                 if (unlikely(ipath_cmp24(psn, qp->s_last_psn + 1))) {
                         dev->n_rdma_seq++;
+                        if (qp->r_flags & IPATH_R_RDMAR_SEQ)
+                                goto ack_done;
+                        qp->r_flags |= IPATH_R_RDMAR_SEQ;
                         ipath_restart_rc(qp, qp->s_last_psn + 1);
                         goto ack_done;
                 }
@@ -1263,6 +1267,9 @@ static inline void ipath_rc_rcv_resp(struct ipath_ibdev *dev,
                 /* ACKs READ req. */
                 if (unlikely(ipath_cmp24(psn, qp->s_last_psn + 1))) {
                         dev->n_rdma_seq++;
+                        if (qp->r_flags & IPATH_R_RDMAR_SEQ)
+                                goto ack_done;
+                        qp->r_flags |= IPATH_R_RDMAR_SEQ;
                         ipath_restart_rc(qp, qp->s_last_psn + 1);
                         goto ack_done;
                 }
diff --git a/drivers/infiniband/hw/ipath/ipath_verbs.h b/drivers/infiniband/hw/ipath/ipath_verbs.h
index deee02ca7ca4..9d12ae8a778e 100644
--- a/drivers/infiniband/hw/ipath/ipath_verbs.h
+++ b/drivers/infiniband/hw/ipath/ipath_verbs.h
@@ -444,6 +444,7 @@ struct ipath_qp {
  * Bit definitions for r_flags.
  */
 #define IPATH_R_REUSE_SGE       0x01
+#define IPATH_R_RDMAR_SEQ       0x02
 
 /*
  * Bit definitions for s_flags.