There's no need to test whether a (delayed) work item in pending
before queueing, flushing or cancelling it.  Most uses are unnecessary
and quite a few of them are buggy.

Remove unnecessary pending tests from wm97xx.  Instead of testing
work_pending(), use the return value of queue_work() to decide whether
to disable IRQ or not.

Only compile tested.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Mark Brown <redacted>
Cc: Liam Girdwood <redacted>
Cc: linux-input@vger.kernel.org
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
Please let me know how this patch should be routed.  I can take it
through the workqueue tree if necessary.

Thanks.

 drivers/input/touchscreen/wm97xx-core.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/input/touchscreen/wm97xx-core.c b/drivers/input/touchscreen/wm97xx-core.c
index 5dbe73a..fd16c63 100644
--- a/drivers/input/touchscreen/wm97xx-core.c
+++ b/drivers/input/touchscreen/wm97xx-core.c

@@ -363,10 +363,8 @@ static irqreturn_t wm97xx_pen_interrupt(int irq, void *dev_id)
 {
 	struct wm97xx *wm = dev_id;
 
-	if (!work_pending(&wm->pen_event_work)) {
+	if (queue_work(wm->ts_workq, &wm->pen_event_work))
 		wm->mach_ops->irq_enable(wm, 0);
-		queue_work(wm->ts_workq, &wm->pen_event_work);
-	}
 
 	return IRQ_HANDLED;
 }

-- 
1.8.0.2