From: Joseph Lo <josephl@nvidia.com>
Date: Thu, 3 Jan 2013 06:42:59 +0000 (+0800)
Subject: ARM: tegra: update the cache maintenance order for CPU shutdown
X-Git-Tag: v3.9-rc1~122^2~9^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=57886616ca7bff844a6427436d0c8faf74653f73;p=pandora-kernel.git

ARM: tegra: update the cache maintenance order for CPU shutdown

Updating the cache maintenance order before CPU shutdown when doing CPU
hotplug.
The old order:
* clean L1 by flush_cache_all
* exit SMP
* CPU shutdown
Adapt to:
* disable L1 data cache by clear C bit
* clean L1 by v7_flush_dcache_louis
* exit SMP
* CPU shutdown

For CPU hotplug case, it's no need to do "flush_cache_all". And we should
disable L1 data cache before clean L1 data cache. Then leaving the SMP
coherency.

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Acked-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
---

Reading git-diff-tree failed