From 7d99331e4793b52d488e911876ef11d843c6c8c9 Mon Sep 17 00:00:00 2001
From: Will Deacon <will.deacon@arm.com>
Date: Wed, 24 Nov 2010 17:45:49 +0000
Subject: [PATCH] ARM: hw_breakpoint: reset control registers in hotplug path

The ARMv7 debug architecture doesn't make any guarantees about the
contents of debug control registers following a debug logic reset.

This patch ensures that we reset the control registers when a cpu
comes ONLINE (for example, with hotplug) so that when we enable
monitor mode while inserting a breakpoint we won't exhibit random
behaviour.

Signed-off-by: Will Deacon <will.deacon@arm.com>
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