sparc: chmc: 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>
Reviewed-by: Andreas Larsson <andreas@gaisler.com>
Link: https://lore.kernel.org/r/9fbd788bbca4efd2f596e3c56d045db450756c80.1712755381.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Andreas Larsson <andreas@gaisler.com>

diff --git a/arch/sparc/kernel/chmc.c b/arch/sparc/kernel/chmc.c
index 00e571c30bb5a9dff26e8e81d96b9ed28eefc2d6..e020740620011b1310893fea4d35f1649101de91 100644 (file)
--- a/arch/sparc/kernel/chmc.c
+++ b/arch/sparc/kernel/chmc.c
@@ -788,7 +788,7 @@ static void jbusmc_destroy(struct platform_device *op, struct jbusmc *p)
        kfree(p);
 }
 
-static int us3mc_remove(struct platform_device *op)
+static void us3mc_remove(struct platform_device *op)
 {
        void *p = dev_get_drvdata(&op->dev);
 
@@ -798,7 +798,6 @@ static int us3mc_remove(struct platform_device *op)
                else if (mc_type == MC_TYPE_JBUS)
                        jbusmc_destroy(op, p);
        }
-       return 0;
 }
 
 static const struct of_device_id us3mc_match[] = {
@@ -815,7 +814,7 @@ static struct platform_driver us3mc_driver = {
                .of_match_table = us3mc_match,
        },
        .probe          = us3mc_probe,
-       .remove         = us3mc_remove,
+       .remove_new     = us3mc_remove,
 };
 
 static inline bool us3mc_platform(void)