irqchip/ts4800: Convert to platform_driver::remove_new() callback

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.

To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/0bdce86b50e5aa50cffbc4add332cbfbad87521e.1703284359.git.u.kleine-koenig@pengutronix.de

drivers/irqchip/irq-ts4800.c

@@ -139,13 +139,11 @@ static int ts4800_ic_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int ts4800_ic_remove(struct platform_device *pdev)
+static void ts4800_ic_remove(struct platform_device *pdev)
 {
 	struct ts4800_irq_data *data = platform_get_drvdata(pdev);
 
 	irq_domain_remove(data->domain);
-
-	return 0;
 }
 
 static const struct of_device_id ts4800_ic_of_match[] = {
@@ -155,11 +153,11 @@ static const struct of_device_id ts4800_ic_of_match[] = {
 MODULE_DEVICE_TABLE(of, ts4800_ic_of_match);
 
 static struct platform_driver ts4800_ic_driver = {
-	.probe  = ts4800_ic_probe,
-	.remove = ts4800_ic_remove,
+	.probe		= ts4800_ic_probe,
+	.remove_new	= ts4800_ic_remove,
 	.driver = {
-		.name = "ts4800-irqc",
-		.of_match_table = ts4800_ic_of_match,
+		.name		= "ts4800-irqc",
+		.of_match_table	= ts4800_ic_of_match,
 	},
 };
 module_platform_driver(ts4800_ic_driver);