From: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Date: Wed, 1 Apr 2015 15:19:59 +0000 (-0700)
Subject: powerpc: Fix smp_mb__before_spinlock()
X-Git-Tag: omap-for-v4.3/legacy-v2-signed~212^2^2^3~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a76ff6884bfedfafcbb0d9c84c7a6b6a546cba6d;p=pandora-kernel.git

powerpc: Fix smp_mb__before_spinlock()

Currently, smp_mb__before_spinlock() is defined to be smp_wmb()
in core code, but this is not sufficient on PowerPC.  This patch
therefore supplies an override for the generic definition to
strengthen smp_mb__before_spinlock() to smp_mb(), as is needed
on PowerPC.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: <linuxppc-dev@lists.ozlabs.org>
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