From: Nicolas Pitre <nicolas.pitre@linaro.org>
Date: Tue, 17 Jul 2012 02:07:10 +0000 (-0400)
Subject: ARM: vexpress/dcscb: add CPU use counts to the power up/down API implementation
X-Git-Tag: omap-for-v3.11/fixes-for-merge-window~71^2~46^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=13eae144ec754ab64521891d2cffc3156f6f083f;p=pandora-kernel.git

ARM: vexpress/dcscb: add CPU use counts to the power up/down API implementation

It is possible for a CPU to be told to power up before it managed
to power itself down.  Solve this race with a usage count to deal
with this possibility as mandated by the MCPM API definition.

Signed-off-by: nicolas Pitre <nico@linaro.org>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Pawel Moll <pawel.moll@arm.com>
---

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