mtd: maps: lantiq-flash: 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>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Link: https://lore.kernel.org/linux-mtd/20231008200143.196369-13-u.kleine-koenig@pengutronix.de

diff --git a/drivers/mtd/maps/lantiq-flash.c b/drivers/mtd/maps/lantiq-flash.c
index a1da1c8973c02a7f0a808a62872f00e5b5c6a47e..124b13c5d74758a423fbdbe5e09d402db88cd657 100644 (file)
--- a/drivers/mtd/maps/lantiq-flash.c
+++ b/drivers/mtd/maps/lantiq-flash.c
@@ -166,8 +166,7 @@ err_destroy:
        return err;
 }
 
-static int
-ltq_mtd_remove(struct platform_device *pdev)
+static void ltq_mtd_remove(struct platform_device *pdev)
 {
        struct ltq_mtd *ltq_mtd = platform_get_drvdata(pdev);
 
@@ -175,7 +174,6 @@ ltq_mtd_remove(struct platform_device *pdev)
                mtd_device_unregister(ltq_mtd->mtd);
                map_destroy(ltq_mtd->mtd);
        }
-       return 0;
 }
 
 static const struct of_device_id ltq_mtd_match[] = {
@@ -186,7 +184,7 @@ MODULE_DEVICE_TABLE(of, ltq_mtd_match);
 
 static struct platform_driver ltq_mtd_driver = {
        .probe = ltq_mtd_probe,
-       .remove = ltq_mtd_remove,
+       .remove_new = ltq_mtd_remove,
        .driver = {
                .name = "ltq-nor",
                .of_match_table = ltq_mtd_match,