irqchip/renesas-rza1: 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/1a80e31525d0b02063d2ff1baaaa5e87418f54b6.1703284359.git.u.kleine-koenig@pengutronix.de

diff --git a/drivers/irqchip/irq-renesas-rza1.c b/drivers/irqchip/irq-renesas-rza1.c
index e4c99c2e0373bf8a5ff68228ccb78c3e06cef3ab..f05afe82db4d1ddd1a4ec0f2de251fd5878b0651 100644 (file)
--- a/drivers/irqchip/irq-renesas-rza1.c
+++ b/drivers/irqchip/irq-renesas-rza1.c
@@ -244,12 +244,11 @@ out_put_node:
        return ret;
 }
 
-static int rza1_irqc_remove(struct platform_device *pdev)
+static void rza1_irqc_remove(struct platform_device *pdev)
 {
        struct rza1_irqc_priv *priv = platform_get_drvdata(pdev);
 
        irq_domain_remove(priv->irq_domain);
-       return 0;
 }
 
 static const struct of_device_id rza1_irqc_dt_ids[] = {
@@ -260,9 +259,9 @@ MODULE_DEVICE_TABLE(of, rza1_irqc_dt_ids);
 
 static struct platform_driver rza1_irqc_device_driver = {
        .probe          = rza1_irqc_probe,
-       .remove         = rza1_irqc_remove,
+       .remove_new     = rza1_irqc_remove,
        .driver         = {
-               .name   = "renesas_rza1_irqc",
+               .name           = "renesas_rza1_irqc",
                .of_match_table = rza1_irqc_dt_ids,
        }
 };