From: Joseph Lo <josephl@nvidia.com>
Date: Tue, 19 Feb 2013 10:16:13 +0000 (+0800)
Subject: ARM: tegra: don't unlock MMIO access to DBGLAR
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~70^2~11^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b095ae2b9f35c838257786de27e550d62bd7c763;p=pandora-kernel.git

ARM: tegra: don't unlock MMIO access to DBGLAR

There is no need to unlock MMIO access to the DBGLAR all the time. Doing
so may even cause problems if a SW bug causes writes to that MMIO region.

Cortex-A15 processors do not support the CP14 register write the code
currently uses to unlock the DBGLAR; the instruction throws an undefined
instruction exceptions. This prevents tegra_secondary_startup() from
executing on Tegra114, and hence prevents SMP.

Remove the code that unlocks this access.

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
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