From d965b0fca7dcde3f82c982e0bf1631069fdeb8c9 Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Fri, 15 May 2015 11:56:45 +0100
Subject: [PATCH] ARM: l2c: restore the behaviour documented above l2c_enable()

l2c_enable() is documented that it must not be called if the cache has
already been enabled.  Unfortunately, commit 6b49241ac252 ("ARM: 8259/1:
l2c: Refactor the driver to use commit-like interface") changed this
without updating the comment, for very little reason.  Revert this
change and restore the expected behaviour.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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