pcmcia: electra_cf: 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>
Link: https://lore.kernel.org/r/7b07c8624ab53ec90554b7a665bef7662bd94295.1702051073.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/pcmcia/electra_cf.c b/drivers/pcmcia/electra_cf.c
index efc27bc15152e3ededfa9a60fb6766340553eeee..5ae826e548116cbdfbf5e17845cee6074274f13f 100644 (file)
--- a/drivers/pcmcia/electra_cf.c
+++ b/drivers/pcmcia/electra_cf.c
@@ -307,7 +307,7 @@ out_free_cf:
 
 }
 
-static int electra_cf_remove(struct platform_device *ofdev)
+static void electra_cf_remove(struct platform_device *ofdev)
 {
        struct device *device = &ofdev->dev;
        struct electra_cf_socket *cf;
@@ -326,8 +326,6 @@ static int electra_cf_remove(struct platform_device *ofdev)
        release_region(cf->io_base, cf->io_size);
 
        kfree(cf);
-
-       return 0;
 }
 
 static const struct of_device_id electra_cf_match[] = {
@@ -344,7 +342,7 @@ static struct platform_driver electra_cf_driver = {
                .of_match_table = electra_cf_match,
        },
        .probe    = electra_cf_probe,
-       .remove   = electra_cf_remove,
+       .remove_new = electra_cf_remove,
 };
 
 module_platform_driver(electra_cf_driver);