Input: wm831x-ts - move BTN_TOUCH reporting to data transfer

Don't report BTN_TOUCH until we've got data as some less robust applications
can be confused by getting a touch event by itself and it doesn't seem
unreasonable for them to expect coordinates along with a touch.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/input/touchscreen/wm831x-ts.c

@@ -148,6 +148,8 @@ static irqreturn_t wm831x_ts_data_irq(int irq, void *irq_data)
 		input_report_key(wm831x_ts->input_dev, BTN_TOUCH, 0);
 
 		schedule_work(&wm831x_ts->pd_data_work);
+	} else {
+		input_report_key(wm831x_ts->input_dev, BTN_TOUCH, 1);
 	}
 
 	input_sync(wm831x_ts->input_dev);
@@ -174,9 +176,6 @@ static irqreturn_t wm831x_ts_pen_down_irq(int irq, void *irq_data)
 			WM831X_TCH_X_ENA | WM831X_TCH_Y_ENA | WM831X_TCH_Z_ENA,
 			WM831X_TCH_X_ENA | WM831X_TCH_Y_ENA | ena);
 
-	input_report_key(wm831x_ts->input_dev, BTN_TOUCH, 1);
-	input_sync(wm831x_ts->input_dev);
-
 	wm831x_set_bits(wm831x, WM831X_INTERRUPT_STATUS_1,
 			WM831X_TCHPD_EINT, WM831X_TCHPD_EINT);