From: Tero Kristo <tero.kristo@nokia.com>
Date: Thu, 24 Feb 2011 15:19:23 +0000 (+0200)
Subject: cpuidle: menu: fixed wrapping timers at 4.294 seconds
X-Git-Tag: v2.6.39.1~28
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=75ea36a5365918b3a66d2273a87cdad146959c32;p=pandora-kernel.git

cpuidle: menu: fixed wrapping timers at 4.294 seconds

commit 7467571f4480b273007517b26297c07154c73924 upstream.

Cpuidle menu governor is using u32 as a temporary datatype for storing
nanosecond values which wrap around at 4.294 seconds. This causes errors
in predicted sleep times resulting in higher than should be C state
selection and increased power consumption. This also breaks cpuidle
state residency statistics.

Signed-off-by: Tero Kristo <tero.kristo@nokia.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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