From: Jean PIHET <jpihet@mvista.com>
Date: Tue, 15 Dec 2009 11:36:10 +0000 (+0100)
Subject: ARM: 5849/1: ARMv7: fix Oprofile events count
X-Git-Tag: v2.6.33-rc2~5^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3321c2bceab3ae6efdb2dc119c41d78e85d4b661;p=pandora-kernel.git

ARM: 5849/1: ARMv7: fix Oprofile events count

On Oprofile ARMv7 the PMNC_D bit was set to lower the PMU IRQs
and so to decrease the risk of errata #628216 from appearing.
The effect of setting the PMNC_D bit is that the CCNT counter
is divided by 64, making the program counter events count
inaccurate.
The new OMAP3 r4 cores should have that errata fixed.

The PMNC_D bit should not be set, this patch fixes it.

Signed-off-by: Jean Pihet <jpihet@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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