From: Arjan van de Ven <arjan@linux.intel.com>
Date: Sun, 7 Sep 2008 23:08:55 +0000 (-0700)
Subject: hrtimer: fix signed/unsigned bug in slack estimator
X-Git-Tag: v2.6.28-rc1~18^2^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=96d2ab484e7a9bafdab44b8c7d1ef5944319b18c;p=pandora-kernel.git

hrtimer: fix signed/unsigned bug in slack estimator

the slack estimator used unsigned math; however for very short delay it's
possible that by the time you calculate the timeout, it's already passed and
you get a negative time/slack... in an unsigned variable... which then gets
turned into a 100 msec delay rather than zero.

This patch fixes this by using a signed typee in the right places.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
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