From 38941522ecbd2198694b742343a67ea128b44913 Mon Sep 17 00:00:00 2001
From: Zhiwu Song <Zhiwu.Song@csr.com>
Date: Thu, 3 Jul 2014 20:52:51 +0800
Subject: [PATCH] clocksource: sirf: Fix incorrect clock enable counter for
 timer

In the clocksource driver, we didn't explicitly enable the clock. it makes the
clk reference counter wrong. We didn't encounter any hang issue because the
tick's clock input has been open and is shared by some other hardware
components, but if we don't enable those components in kernel, in the stage of
disabling unused clk in kernel boot, Linux tick hangs.

This patch fixes it. it does an explicit prepare and enable to the clock input,
and increases the usage counter of the clk.

Signed-off-by: Zhiwu Song <Zhiwu.Song@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
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