From a6198a238baceae9d4e0ce3915f6d239c89b5c08 Mon Sep 17 00:00:00 2001
From: Paul Mundt <lethal@linux-sh.org>
Date: Fri, 15 Jan 2010 14:21:37 +0900
Subject: [PATCH] sh: Guard against early IPIs in flush_cache_all().

flush_cache_all() gets called in to when we do some early ioremapping.
Unfortunately on SDK7786 the interrupt controller itself requires
ioremapping, leading to a bit of a chicken and egg scenario. For now,
don't bother with IPI crosscalls if there aren't any other CPUs online.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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