Input: touchsceen - convert timers to use timer_setup()

In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/touchscreen/ad7879.c

@@ -237,9 +237,9 @@ static void ad7879_ts_event_release(struct ad7879 *ts)
 	input_sync(input_dev);
 }
 
-static void ad7879_timer(unsigned long handle)
+static void ad7879_timer(struct timer_list *t)
 {
-	struct ad7879 *ts = (void *)handle;
+	struct ad7879 *ts = from_timer(ts, t, timer);
 
 	ad7879_ts_event_release(ts);
 }
@@ -570,7 +570,7 @@ int ad7879_probe(struct device *dev, struct regmap *regmap,
 	ts->irq = irq;
 	ts->regmap = regmap;
 
-	setup_timer(&ts->timer, ad7879_timer, (unsigned long) ts);
+	timer_setup(&ts->timer, ad7879_timer, 0);
 	snprintf(ts->phys, sizeof(ts->phys), "%s/input0", dev_name(dev));
 
 	input_dev->name = "AD7879 Touchscreen";

drivers/input/touchscreen/atmel-wm97xx.c

@@ -208,9 +208,12 @@ static void atmel_wm97xx_acc_pen_up(struct wm97xx *wm)
 	}
 }
 
-static void atmel_wm97xx_pen_timer(unsigned long data)
+static void atmel_wm97xx_pen_timer(struct timer_list *t)
 {
-	atmel_wm97xx_acc_pen_up((struct wm97xx *)data);
+	struct atmel_wm97xx *atmel_wm97xx = from_timer(atmel_wm97xx, t,
+						       pen_timer);
+
+	atmel_wm97xx_acc_pen_up(atmel_wm97xx->wm);
 }
 
 static int atmel_wm97xx_acc_startup(struct wm97xx *wm)
@@ -348,8 +351,7 @@ static int __init atmel_wm97xx_probe(struct platform_device *pdev)
 	atmel_wm97xx->gpio_pen	= atmel_gpio_line;
 	atmel_wm97xx->gpio_irq	= gpio_to_irq(atmel_wm97xx->gpio_pen);
 
-	setup_timer(&atmel_wm97xx->pen_timer, atmel_wm97xx_pen_timer,
-			(unsigned long)wm);
+	timer_setup(&atmel_wm97xx->pen_timer, atmel_wm97xx_pen_timer, 0);
 
 	ret = request_irq(atmel_wm97xx->ac97c_irq,
 			  atmel_wm97xx_channel_b_interrupt,

drivers/input/touchscreen/cyttsp4_core.c

@@ -1237,9 +1237,9 @@ static void cyttsp4_stop_wd_timer(struct cyttsp4 *cd)
 	del_timer_sync(&cd->watchdog_timer);
 }
 
-static void cyttsp4_watchdog_timer(unsigned long handle)
+static void cyttsp4_watchdog_timer(struct timer_list *t)
 {
-	struct cyttsp4 *cd = (struct cyttsp4 *)handle;
+	struct cyttsp4 *cd = from_timer(cd, t, watchdog_timer);
 
 	dev_vdbg(cd->dev, "%s: Watchdog timer triggered\n", __func__);
 
@@ -2074,8 +2074,7 @@ struct cyttsp4 *cyttsp4_probe(const struct cyttsp4_bus_ops *ops,
 	}
 
 	/* Setup watchdog timer */
-	setup_timer(&cd->watchdog_timer, cyttsp4_watchdog_timer,
-		(unsigned long)cd);
+	timer_setup(&cd->watchdog_timer, cyttsp4_watchdog_timer, 0);
 
 	/*
 	 * call startup directly to ensure that the device

drivers/input/touchscreen/tsc200x-core.c

@@ -202,9 +202,9 @@ static irqreturn_t tsc200x_irq_thread(int irq, void *_ts)
 	return IRQ_HANDLED;
 }
 
-static void tsc200x_penup_timer(unsigned long data)
+static void tsc200x_penup_timer(struct timer_list *t)
 {
-	struct tsc200x *ts = (struct tsc200x *)data;
+	struct tsc200x *ts = from_timer(ts, t, penup_timer);
 	unsigned long flags;
 
 	spin_lock_irqsave(&ts->lock, flags);
@@ -506,7 +506,7 @@ int tsc200x_probe(struct device *dev, int irq, const struct input_id *tsc_id,
 	mutex_init(&ts->mutex);
 
 	spin_lock_init(&ts->lock);
-	setup_timer(&ts->penup_timer, tsc200x_penup_timer, (unsigned long)ts);
+	timer_setup(&ts->penup_timer, tsc200x_penup_timer, 0);
 
 	INIT_DELAYED_WORK(&ts->esd_work, tsc200x_esd_work);
 

drivers/input/touchscreen/w90p910_ts.c

@@ -146,9 +146,9 @@ static irqreturn_t w90p910_ts_interrupt(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-static void w90p910_check_pen_up(unsigned long data)
+static void w90p910_check_pen_up(struct timer_list *t)
 {
-	struct w90p910_ts *w90p910_ts = (struct w90p910_ts *) data;
+	struct w90p910_ts *w90p910_ts = from_timer(w90p910_ts, t, timer);
 	unsigned long flags;
 
 	spin_lock_irqsave(&w90p910_ts->lock, flags);
@@ -232,8 +232,7 @@ static int w90x900ts_probe(struct platform_device *pdev)
 	w90p910_ts->input = input_dev;
 	w90p910_ts->state = TS_IDLE;
 	spin_lock_init(&w90p910_ts->lock);
-	setup_timer(&w90p910_ts->timer, w90p910_check_pen_up,
-		    (unsigned long)w90p910_ts);
+	timer_setup(&w90p910_ts->timer, w90p910_check_pen_up, 0);
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res) {