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IB/mthca: reset QP's last pointers when transitioning to reset state 

last pointer is not updated when QP is modified to reset state.  This
causes data corruption if WQEs are already posted on the queue.

Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Michael S. Tsirkin 2005-11-28 11:19:43 -08:00 committed by Roland Dreier
parent 458af5439f
commit 187a25863f
1 changed files with 3 additions and 0 deletions
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3
drivers/infiniband/hw/mthca/mthca_qp.c
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@ -871,7 +871,10 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask)
qp->ibqp.srq ? to_msrq(qp->ibqp.srq) : NULL);
mthca_wq_init(&qp->sq);
qp->sq.last = get_send_wqe(qp, qp->sq.max - 1);
mthca_wq_init(&qp->rq);
qp->rq.last = get_recv_wqe(qp, qp->rq.max - 1);
if (mthca_is_memfree(dev)) {
*qp->sq.db = 0;