workqueue: un-GPL function delayed_work_timer_fn()

commit d8e794dfd51c368ed3f686b7f4172830b60ae47b ("workqueue: set delayed_work->timer function on initialization") exports function delayed_work_timer_fn() only for GPL modules. This makes delayed-works unusable for non-GPL modules, because initialization macro now requires GPL symbol. For example schedule_delayed_work() available for non-GPL.

---
 kernel/workqueue.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index fbc6576..033ad5b 100644
@@ -1352,7 +1352,7 @@ void delayed_work_timer_fn(unsigned long __data)
 	/* should have been called from irqsafe timer with irq already off */
 	__queue_work(dwork->cpu, cwq->wq, &dwork->work);
 }
-EXPORT_SYMBOL_GPL(delayed_work_timer_fn);
+EXPORT_SYMBOL(delayed_work_timer_fn);
 
 static void __queue_delayed_work(int cpu, struct workqueue_struct *wq,
 				struct delayed_work *dwork, unsigned long delay)

Applied to wq/for-3.8-fixes. Thanks.

tejun