From: Michael Albaugh <Michael.Albaugh@QLogic.com>
Date: Thu, 15 Mar 2007 21:45:08 +0000 (-0700)
Subject: IB/ipath: Fix driver crash (in interrupt or during unload) after chip reset
X-Git-Tag: v2.6.22-rc1~1126^2~22
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=27b044a815df7d4530bc68560796680ed588070c;p=pandora-kernel.git

IB/ipath: Fix driver crash (in interrupt or during unload) after chip reset

Re-init of the kernel structures after a chip reset was leaving the
portdata structure for port zero in an inconsistent state, and a
pointer to it either stale (in re-init code) or NULL (in devdata)
Fixing the order of operations on this struct, and the condition for
interrupt access, prevents the crashes.

Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
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