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IB/mthca: Fix off-by-one in mthca SRQ creation

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All HCAs (not just mem-free) need a spare SRQ entry, so bump srq->max
by 1 in all cases.

Noted by Jack Morgenstein <jackm@mellanox.co.il>

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 2006-10-09 18:06:32 +02:00 committed by Roland Dreier
parent 73fbe8be73
commit 2cbe19d48a
1 changed files with 4 additions and 2 deletions
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6
drivers/infiniband/hw/mthca/mthca_srq.c
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@ -201,6 +201,8 @@ int mthca_alloc_srq(struct mthca_dev *dev, struct mthca_pd *pd,
if (mthca_is_memfree(dev))
srq->max = roundup_pow_of_two(srq->max + 1);
else
srq->max = srq->max + 1;
ds = max(64UL,
roundup_pow_of_two(sizeof (struct mthca_next_seg) +
@ -277,7 +279,7 @@ int mthca_alloc_srq(struct mthca_dev *dev, struct mthca_pd *pd,
srq->first_free = 0;
srq->last_free = srq->max - 1;
attr->max_wr = (mthca_is_memfree(dev)) ? srq->max - 1 : srq->max;
attr->max_wr = srq->max - 1;
attr->max_sge = srq->max_gs;
return 0;
@ -413,7 +415,7 @@ int mthca_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *srq_attr)
srq_attr->srq_limit = be16_to_cpu(tavor_ctx->limit_watermark);
}
srq_attr->max_wr = (mthca_is_memfree(dev)) ? srq->max - 1 : srq->max;
srq_attr->max_wr = srq->max - 1;
srq_attr->max_sge = srq->max_gs;
out: