[PATCH 23/52] serial: meson: Convert to platform remove callback returning void

[Uwe Kleine-König]

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 at pengutronix.de>
---
 drivers/tty/serial/meson_uart.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/tty/serial/meson_uart.c b/drivers/tty/serial/meson_uart.c
index 8dd84617e715..8395688f5ee9 100644
--- a/drivers/tty/serial/meson_uart.c
+++ b/drivers/tty/serial/meson_uart.c
@@ -795,7 +795,7 @@ static int meson_uart_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int meson_uart_remove(struct platform_device *pdev)
+static void meson_uart_remove(struct platform_device *pdev)
 {
 	struct uart_driver *uart_driver;
 	struct uart_port *port;
@@ -807,12 +807,10 @@ static int meson_uart_remove(struct platform_device *pdev)
 
 	for (int id = 0; id < AML_UART_PORT_NUM; id++)
 		if (meson_ports[id])
-			return 0;
+			return;
 
 	/* No more available uart ports, unregister uart driver */
 	uart_unregister_driver(uart_driver);
-
-	return 0;
 }
 
 static struct meson_uart_data meson_g12a_uart_data = {
@@ -852,7 +850,7 @@ MODULE_DEVICE_TABLE(of, meson_uart_dt_match);
 
 static  struct platform_driver meson_uart_platform_driver = {
 	.probe		= meson_uart_probe,
-	.remove		= meson_uart_remove,
+	.remove_new	= meson_uart_remove,
 	.driver		= {
 		.name		= "meson_uart",
 		.of_match_table	= meson_uart_dt_match,
-- 
2.42.0