From: Jack Morgenstein <jackm@dev.mellanox.co.il>
Date: Thu, 21 Jun 2007 20:39:10 +0000 (-0700)
Subject: IB/mlx4: Correct max_srq_wr returned from mlx4_ib_query_device()
X-Git-Tag: v2.6.22-rc6~38^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c8681f14013d3ad2fc4fb4e30cfd4ea548f7a249;p=pandora-kernel.git

IB/mlx4: Correct max_srq_wr returned from mlx4_ib_query_device()

We need to keep a spare entry in the SRQ so that there always is a
next WQE available when posting receives (so that we can tell the
difference between a full queue and an empty queue).  So subtract 1
from the value HW gives us before reporting the limit on SRQ entries
to consumers.

Found by Mellanox QA.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
---

Reading git-diff-tree failed