From: Will Deacon <will.deacon@arm.com>
Date: Tue, 6 Mar 2012 16:35:55 +0000 (+0100)
Subject: ARM: 7357/1: perf: fix overflow handling for xscale2 PMUs
X-Git-Tag: v3.3-rc7~18^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3f31ae121348afd9ed39700ea2a63c17cd7eeed1;p=pandora-kernel.git

ARM: 7357/1: perf: fix overflow handling for xscale2 PMUs

xscale2 PMUs indicate overflow not via the PMU control register, but by
a separate overflow FLAG register instead.

This patch fixes the xscale2 PMU code to use this register to detect
to overflow and ensures that we clear any pending overflow when
disabling a counter.

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