serial: fsl_linflexuart: 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/20231110152927.70601-16-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/fsl_linflexuart.c b/drivers/tty/serial/fsl_linflexuart.c
index 3bdaf1ddc3094eb7efb6caa4f1f3f516eb8163fd..52c87876a88de6b7e43969029947744a91f0e3cf 100644 (file)
--- a/drivers/tty/serial/fsl_linflexuart.c
+++ b/drivers/tty/serial/fsl_linflexuart.c
@@ -851,13 +851,11 @@ static int linflex_probe(struct platform_device *pdev)
        return uart_add_one_port(&linflex_reg, sport);
 }
 
-static int linflex_remove(struct platform_device *pdev)
+static void linflex_remove(struct platform_device *pdev)
 {
        struct uart_port *sport = platform_get_drvdata(pdev);
 
        uart_remove_one_port(&linflex_reg, sport);
-
-       return 0;
 }
 
 #ifdef CONFIG_PM_SLEEP
@@ -884,7 +882,7 @@ static SIMPLE_DEV_PM_OPS(linflex_pm_ops, linflex_suspend, linflex_resume);
 
 static struct platform_driver linflex_driver = {
        .probe          = linflex_probe,
-       .remove         = linflex_remove,
+       .remove_new     = linflex_remove,
        .driver         = {
                .name   = DRIVER_NAME,
                .of_match_table = linflex_dt_ids,