diff options
| -rw-r--r-- | drivers/infiniband/hw/mthca/mthca_cq.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_cq.c b/drivers/infiniband/hw/mthca/mthca_cq.c index 205854e9c662..87a8f1166a3b 100644 --- a/drivers/infiniband/hw/mthca/mthca_cq.c +++ b/drivers/infiniband/hw/mthca/mthca_cq.c @@ -540,8 +540,17 @@ static inline int mthca_poll_one(struct mthca_dev *dev, entry->wr_id = srq->wrid[wqe_index]; mthca_free_srq_wqe(srq, wqe); } else { + s32 wqe; wq = &(*cur_qp)->rq; - wqe_index = be32_to_cpu(cqe->wqe) >> wq->wqe_shift; + wqe = be32_to_cpu(cqe->wqe); + wqe_index = wqe >> wq->wqe_shift; + /* + * WQE addr == base - 1 might be reported in receive completion + * with error instead of (rq size - 1) by Sinai FW 1.0.800 and + * Arbel FW 5.1.400. This bug should be fixed in later FW revs. + */ + if (unlikely(wqe_index < 0)) + wqe_index = wq->max - 1; entry->wr_id = (*cur_qp)->wrid[wqe_index]; } |
