From: Roland Dreier <rolandd@cisco.com>
Date: Wed, 10 Oct 2007 02:59:18 +0000 (-0700)
Subject: IB/ehca: Fix clipping of device limits to INT_MAX
X-Git-Tag: v2.6.24-rc1~1453^2~26
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=76dea3bc2644e99cce1d98d0bbd3124314e5b50a;p=pandora-kernel.git

IB/ehca: Fix clipping of device limits to INT_MAX

Doing min_t(int, foo, INT_MAX) doesn't work correctly, because if foo
is bigger than INT_MAX, then when treated as a signed integer, it will
become negative and hence such an expression is just an elaborate NOP.

Fix such cases in ehca to do min_t(unsigned, foo, INT_MAX) instead.
This fixes negative reported values for max_cqe, max_pd and max_ah:

Before:

        max_cqe:                        -64
        max_pd:                         -1
        max_ah:                         -1

After:
        max_cqe:                        2147483647
        max_pd:                         2147483647
        max_ah:                         2147483647

Based on a bug report and fix from Anton Blanchard <anton@samba.org>.

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