From: Kim Phillips <kim.phillips@freescale.com>
Date: Sat, 23 Jun 2012 00:48:56 +0000 (-0500)
Subject: crypto: caam - consolidate memory barriers from job ring en/dequeue
X-Git-Tag: v3.6-rc1~94^2~18
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=14a8e29cc2012394d3e886b11402eabd49a4d609;p=pandora-kernel.git

crypto: caam - consolidate memory barriers from job ring en/dequeue

Memory barriers are implied by the i/o register write implementation
(at least on Power).  So we can remove the redundant wmb() in
caam_jr_enqueue, and, in dequeue(), hoist the h/w done notification
write up to before we need to increment the head of the ring, and
save an smp_mb.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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