From: Caesar Wang <wxt@rock-chips.com>
Date: Tue, 9 Jun 2015 09:49:58 +0000 (+0800)
Subject: ARM: rockchip: ensure CPU to enter WFI/WFE state
X-Git-Tag: omap-for-v4.3/fixes-merge-window~8^2~22^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e306bc16c53199e7440e1fee69dd91dc0a56edee;p=pandora-kernel.git

ARM: rockchip: ensure CPU to enter WFI/WFE state

The patch can ensure that v7_exit_coherency_flush() in rockchip_cpu_die()
executed in time.
The mdelay(1) has enough time to fix the problem of CPU offlining.
That's a workaround way in rockchip hotplug code,
At least, we haven't a better way to solve it. Who know,
that maybe fixed by chip (hardware) in the future.

Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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