mtd: rawnand: txx9ndfmc: 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>
Link: https://lore.kernel.org/linux-mtd/20231102220246.3336154-10-u.kleine-koenig@pengutronix.de

diff --git a/drivers/mtd/nand/raw/txx9ndfmc.c b/drivers/mtd/nand/raw/txx9ndfmc.c
index fdcdfbea0cbd9de1652b8061af11c3ade7413260..37f79c019a72f8100b76855b8cb4c9b465898c9d 100644 (file)
--- a/drivers/mtd/nand/raw/txx9ndfmc.c
+++ b/drivers/mtd/nand/raw/txx9ndfmc.c
@@ -369,7 +369,7 @@ static int txx9ndfmc_probe(struct platform_device *dev)
        return 0;
 }
 
-static int txx9ndfmc_remove(struct platform_device *dev)
+static void txx9ndfmc_remove(struct platform_device *dev)
 {
        struct txx9ndfmc_drvdata *drvdata = platform_get_drvdata(dev);
        int ret, i;
@@ -390,7 +390,6 @@ static int txx9ndfmc_remove(struct platform_device *dev)
                kfree(txx9_priv->mtdname);
                kfree(txx9_priv);
        }
-       return 0;
 }
 
 #ifdef CONFIG_PM
@@ -406,7 +405,7 @@ static int txx9ndfmc_resume(struct platform_device *dev)
 
 static struct platform_driver txx9ndfmc_driver = {
        .probe          = txx9ndfmc_probe,
-       .remove         = txx9ndfmc_remove,
+       .remove_new     = txx9ndfmc_remove,
        .resume         = txx9ndfmc_resume,
        .driver         = {
                .name   = "txx9ndfmc",