From: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Date: Thu, 31 Jan 2013 10:08:03 +0000 (+0100)
Subject: ARM: stub out read_cpuid and read_cpuid_ext for CPU_CP15=n
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~51^2~5^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6ebd4d038dbb626a43d87db3007e71f92f49d7b3;p=pandora-kernel.git

ARM: stub out read_cpuid and read_cpuid_ext for CPU_CP15=n

Traditionally for !CPU_CP15 read_cpuid and read_cpuid_ext returned the
processor id independent of the parameter passed in. This is wrong of
course but theoretically this doesn't harm because it's only called on
machines having a cp15.

Instead return 0 unconditionally which might make unused code paths be
better optimizable and so smaller and warn about unexpected usage.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Message-Id: 1359646587-1788-2-git-send-email-u.kleine-koenig@pengutronix.de
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