platform/x86/siemens: simatic-ipc-batt: Convert to platform remove callback returning...

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/20230927081040.2198742-25-u.kleine-koenig@pengutronix.de
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

diff --git a/drivers/platform/x86/siemens/simatic-ipc-batt.c b/drivers/platform/x86/siemens/simatic-ipc-batt.c
index 07cd4944de3214e96c472d9266ba855a0b368375..c6dd263b4ee36471d2e8cd81cfdacc8ade392f54 100644 (file)
--- a/drivers/platform/x86/siemens/simatic-ipc-batt.c
+++ b/drivers/platform/x86/siemens/simatic-ipc-batt.c
@@ -227,11 +227,9 @@ out:
 }
 EXPORT_SYMBOL_GPL(simatic_ipc_batt_probe);
 
-static int simatic_ipc_batt_io_remove(struct platform_device *pdev)
+static void simatic_ipc_batt_io_remove(struct platform_device *pdev)
 {
        simatic_ipc_batt_remove(pdev, NULL);
-
-       return 0;
 }
 
 static int simatic_ipc_batt_io_probe(struct platform_device *pdev)
@@ -241,7 +239,7 @@ static int simatic_ipc_batt_io_probe(struct platform_device *pdev)
 
 static struct platform_driver simatic_ipc_batt_driver = {
        .probe = simatic_ipc_batt_io_probe,
-       .remove = simatic_ipc_batt_io_remove,
+       .remove_new = simatic_ipc_batt_io_remove,
        .driver = {
                .name = KBUILD_MODNAME,
        },