From: Will Deacon <will.deacon@arm.com>
Date: Fri, 25 Feb 2011 19:20:42 +0000 (+0100)
Subject: ARM: 6768/1: hw_breakpoint: ensure debug logic is powered up on v7 cores
X-Git-Tag: v2.6.38-rc8~2^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c09bae709182046ab104757115dfbd74a1ba1a15;p=pandora-kernel.git

ARM: 6768/1: hw_breakpoint: ensure debug logic is powered up on v7 cores

ARMv7 allows the debug core logic to be powered down and provides the
DBGPRSR register so that software can power-up and check the status of
the logic.

This patch ensures that the debug logic is powered up on ARMv7 cores
before we attempt to access the extended debug registers.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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