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IB/ehca: Use default value for Local CA ACK Delay if FW returns 0

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Some firmware versions report a Local CA ACK Delay of 0.  In that
case, return a more sensible default value of 12 (-> 16 msec) instead.

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Joachim Fenkes 2008-07-22 14:18:08 -07:00 committed by Roland Dreier
parent 5b673b71c8
commit 593e4d4a05
1 changed files with 3 additions and 1 deletions
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4
drivers/infiniband/hw/ehca/ehca_hca.c
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@ -114,7 +114,9 @@ int ehca_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
}
props->max_pkeys = 16;
props->local_ca_ack_delay = min_t(u8, rblock->local_ca_ack_delay, 255);
/* Some FW versions say 0 here; insert sensible value in that case */
props->local_ca_ack_delay = rblock->local_ca_ack_delay ?
min_t(u8, rblock->local_ca_ack_delay, 255) : 12;
props->max_raw_ipv6_qp = limit_uint(rblock->max_raw_ipv6_qp);
props->max_raw_ethy_qp = limit_uint(rblock->max_raw_ethy_qp);
props->max_mcast_grp = limit_uint(rblock->max_mcast_grp);