From bb4a7f0da75ce9f3e933880428d39b2aa1f16961 Mon Sep 17 00:00:00 2001
From: Roland Dreier <rolandd@cisco.com>
Date: Mon, 12 Sep 2005 14:08:51 -0700
Subject: [PATCH] IB/mthca: assign ACK timeout field correctly
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@cisco.com>
---
drivers/infiniband/hw/mthca/mthca_qp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
(limited to 'drivers')
diff --git a/drivers/infiniband/hw/mthca/mthca_qp.c b/drivers/infiniband/hw/mthca/mthca_qp.c
index bcef06bf15e7..2c883c1fd53a 100644
--- 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, struct ib_qp_attr *attr, int attr_mask)
}
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);
}
--
cgit v1.2.3