linux-kernel - [PATCH 17/25] wm97xx: don't use [delayed_]work

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Date:	Fri, 21 Dec 2012 17:57:07 -0800
From:	Tejun Heo <tj@...nel.org>
To:	linux-kernel@...r.kernel.org
Cc:	Tejun Heo <tj@...nel.org>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Liam Girdwood <lrg@...mlogic.co.uk>,
	linux-input@...r.kernel.org,
	Dmitry Torokhov <dmitry.torokhov@...il.com>
Subject: [PATCH 17/25] wm97xx: don't use [delayed_]work_pending()

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@...nel.org>
Cc: Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc: Liam Girdwood <lrg@...mlogic.co.uk>
Cc: linux-input@...r.kernel.org
Cc: Dmitry Torokhov <dmitry.torokhov@...il.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

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