From: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Date: Fri, 23 Sep 2011 17:17:00 +0000 (-0400)
Subject: IB/qib: Remove s_lock around header validation
X-Git-Tag: v3.2-rc1~104^2^11~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9fd5473deb421eb7e5575a5f9d7e43ca67c04fe9;p=pandora-kernel.git

IB/qib: Remove s_lock around header validation

Review of qib_ruc_check_hdr() shows that the s_lock is not required in
the normal case.  The r_lock is held in all cases, and protects the qp
fields that are read.

The s_lock will be needed to around the call to qib_migrate_qp() to
insure that the send engine sees a consistent set of fields.

Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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