From: Steve Wise <swise@opengridcomputing.com>
Date: Fri, 23 Jul 2010 19:12:27 +0000 (+0000)
Subject: RDMA/cxgb4: Fix race in fini path
X-Git-Tag: v2.6.36-rc1~492^2^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=73d6fcad2ac84b6fad326d87dc1dd0b29aabbd34;p=pandora-kernel.git

RDMA/cxgb4: Fix race in fini path

There exists a race condition where the app disconnects, which
initiates an orderly close (via rdma_fini()), concurrently with an
ingress abort condition, which initiates an abortive close operation.
Since rdma_fini() must be called without IRQs disabled, the fini can
be called after the QP has been transitioned to ERROR.  This is ok,
but we need to protect against qp->ep getting NULLed.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
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