From 7c6e72e46c9ea4a88f3f8ba96edce9db4bd48726 Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Thu, 20 Sep 2012 10:03:19 -0700
Subject: [PATCH] workqueue: remove spurious WARN_ON_ONCE(in_irq()) from
 try_to_grab_pending()

e0aecdd874 ("workqueue: use irqsafe timer for delayed_work") made
try_to_grab_pending() safe to use from irq context but forgot to
remove WARN_ON_ONCE(in_irq()).  Remove it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
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