From 9d7d6e363b06934221b81a859d509844c97380df Mon Sep 17 00:00:00 2001
From: Colin Cross <ccross@android.com>
Date: Mon, 8 Oct 2012 14:01:12 -0700
Subject: [PATCH] ARM: OMAP: counter: add locking to read_persistent_clock

read_persistent_clock uses a global variable, use a spinlock to
ensure non-atomic updates to the variable don't overlap and cause
time to move backwards.

Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: R Sricharan <r.sricharan@ti.com>
Cc: stable@vger.kernel.org
Signed-off-by: Tony Lindgren <tony@atomide.com>
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Reading git-format-patch failed