[openib-general] [PATCH 02/10] IB/mthca: assign ACK timeout field correctly

[Roland Dreier]

The hardware reads the ACK timeout field from the most significant 5
bits of struct mthca_qp_path's ackto field, not the least significant
bits.  This fix has the driver put the timeout in the right place.
Without this, we get a timeout that is 2^8 times too small.

Signed-off-by: Roland Dreier <rolandd at cisco.com>

---

 drivers/infiniband/hw/mthca/mthca_qp.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

6fd9dccd77024ea85b65aa3e8f1cce22caa0d578
diff --git a/drivers/infiniband/hw/mthca/mthca_qp.c b/drivers/infiniband/hw/mthca/mthca_qp.c
--- a/drivers/infiniband/hw/mthca/mthca_qp.c
+++ b/drivers/infiniband/hw/mthca/mthca_qp.c
@@ -687,7 +687,7 @@ int mthca_modify_qp(struct ib_qp *ibqp, 
 	}
 
 	if (attr_mask & IB_QP_TIMEOUT) {
-		qp_context->pri_path.ackto = attr->timeout;
+		qp_context->pri_path.ackto = attr->timeout << 3;
 		qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_ACK_TIMEOUT);
 	}