[PATCH 52/52] serial: xilinx_uartps: 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/xilinx_uartps.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index 66a45a634158..6decf2b13340 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -1666,7 +1666,7 @@ static int cdns_uart_probe(struct platform_device *pdev)
  *
  * Return: 0 on success, negative errno otherwise
  */
-static int cdns_uart_remove(struct platform_device *pdev)
+static void cdns_uart_remove(struct platform_device *pdev)
 {
 	struct uart_port *port = platform_get_drvdata(pdev);
 	struct cdns_uart *cdns_uart_data = port->private_data;
@@ -1692,12 +1692,11 @@ static int cdns_uart_remove(struct platform_device *pdev)
 
 	if (!--instances)
 		uart_unregister_driver(cdns_uart_data->cdns_uart_driver);
-	return 0;
 }
 
 static struct platform_driver cdns_uart_platform_driver = {
 	.probe   = cdns_uart_probe,
-	.remove  = cdns_uart_remove,
+	.remove_new = cdns_uart_remove,
 	.driver  = {
 		.name = CDNS_UART_NAME,
 		.of_match_table = cdns_uart_of_match,
-- 
2.42.0