serial: sa1100: Convert to platform remove callback returning void

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>
Link: https://lore.kernel.org/r/20231110152927.70601-34-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/sa1100.c b/drivers/tty/serial/sa1100.c
index be7bcd75d9f4973c7f28ca553c6f611fb765e132..79c794fa654512ae6a912c900cbbd87ef9671fe2 100644 (file)
--- a/drivers/tty/serial/sa1100.c
+++ b/drivers/tty/serial/sa1100.c
@@ -870,19 +870,17 @@ static int sa1100_serial_probe(struct platform_device *dev)
        return 0;
 }
 
-static int sa1100_serial_remove(struct platform_device *pdev)
+static void sa1100_serial_remove(struct platform_device *pdev)
 {
        struct sa1100_port *sport = platform_get_drvdata(pdev);
 
        if (sport)
                uart_remove_one_port(&sa1100_reg, &sport->port);
-
-       return 0;
 }
 
 static struct platform_driver sa11x0_serial_driver = {
        .probe          = sa1100_serial_probe,
-       .remove         = sa1100_serial_remove,
+       .remove_new     = sa1100_serial_remove,
        .suspend        = sa1100_serial_suspend,
        .resume         = sa1100_serial_resume,
        .driver         = {