From: Tejun Heo <tj@kernel.org>
Date: Fri, 3 Aug 2012 17:30:45 +0000 (-0700)
Subject: workqueue: set delayed_work->timer function on initialization
X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~52^2~43
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d8e794dfd51c368ed3f686b7f4172830b60ae47b;p=pandora-kernel.git

workqueue: set delayed_work->timer function on initialization

delayed_work->timer.function is currently initialized during
queue_delayed_work_on().  Export delayed_work_timer_fn() and set
delayed_work timer function during delayed_work initialization
together with other fields.

This ensures the timer function is always valid on an initialized
delayed_work.  This is to help mod_delayed_work() implementation.

To detect delayed_work users which diddle with the internal timer,
trigger WARN if timer function doesn't match on queue.

Signed-off-by: Tejun Heo <tj@kernel.org>
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