Input: wm831x-on - convert to use genirq

Now that the WM831x core has been converted to use genirq for the
interrupt controller there is no need for the client drivers to
use a WM831x-specific API rather than just calling genirq directly.

Also fixes a leak of the IRQ during init failure - the error path
free_irq() was using NULL rather than the driver data as the data
pointer so free_irq() wouldn't have matched.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

drivers/input/misc/wm831x-on.c

@@ -97,8 +97,9 @@ static int __devinit wm831x_on_probe(struct platform_device *pdev)
 	wm831x_on->dev->phys = "wm831x_on/input0";
 	wm831x_on->dev->dev.parent = &pdev->dev;
 
-	ret = wm831x_request_irq(wm831x, irq, wm831x_on_irq,
-				 IRQF_TRIGGER_RISING, "wm831x_on", wm831x_on);
+	ret = request_threaded_irq(irq, NULL, wm831x_on_irq,
+				   IRQF_TRIGGER_RISING, "wm831x_on",
+				   wm831x_on);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "Unable to request IRQ: %d\n", ret);
 		goto err_input_dev;
@@ -114,7 +115,7 @@ static int __devinit wm831x_on_probe(struct platform_device *pdev)
 	return 0;
 
 err_irq:
-	wm831x_free_irq(wm831x, irq, NULL);
+	free_irq(irq, wm831x_on);
 err_input_dev:
 	input_free_device(wm831x_on->dev);
 err:
@@ -127,7 +128,7 @@ static int __devexit wm831x_on_remove(struct platform_device *pdev)
 	struct wm831x_on *wm831x_on = platform_get_drvdata(pdev);
 	int irq = platform_get_irq(pdev, 0);
 
-	wm831x_free_irq(wm831x_on->wm831x, irq, wm831x_on);
+	free_irq(irq, wm831x_on);
 	cancel_delayed_work_sync(&wm831x_on->work);
 	input_unregister_device(wm831x_on->dev);
 	kfree(wm831x_on);