net: wan: framer/pef2256: 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>
Acked-by: Herve Codina <herve.codina@bootlin.com>
Link: https://lore.kernel.org/r/9684419fd714cc489a3ef36d838d3717bb6aec6d.1709886922.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/wan/framer/pef2256/pef2256.c b/drivers/net/wan/framer/pef2256/pef2256.c
index 4f81053ee4f0ad1a48611e9b89c2e92c2feb5f49..413a3c1d15bbe87c508d082753ac0976be5f3d40 100644 (file)
--- a/drivers/net/wan/framer/pef2256/pef2256.c
+++ b/drivers/net/wan/framer/pef2256/pef2256.c
@@ -838,7 +838,7 @@ static int pef2256_probe(struct platform_device *pdev)
        return 0;
 }
 
-static int pef2256_remove(struct platform_device *pdev)
+static void pef2256_remove(struct platform_device *pdev)
 {
        struct pef2256 *pef2256 = platform_get_drvdata(pdev);
 
@@ -849,8 +849,6 @@ static int pef2256_remove(struct platform_device *pdev)
        pef2256_write8(pef2256, PEF2256_IMR3, 0xff);
        pef2256_write8(pef2256, PEF2256_IMR4, 0xff);
        pef2256_write8(pef2256, PEF2256_IMR5, 0xff);
-
-       return 0;
 }
 
 static const struct of_device_id pef2256_id_table[] = {
@@ -865,7 +863,7 @@ static struct platform_driver pef2256_driver = {
                .of_match_table = pef2256_id_table,
        },
        .probe = pef2256_probe,
-       .remove = pef2256_remove,
+       .remove_new = pef2256_remove,
 };
 module_platform_driver(pef2256_driver);