perf: amlogic: 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/33dbadf246eb323edd9e09ac744111216c167a55.1702648124.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Will Deacon <will@kernel.org>

diff --git a/drivers/perf/amlogic/meson_g12_ddr_pmu.c b/drivers/perf/amlogic/meson_g12_ddr_pmu.c
index 15d52ab3276a569cece13baa6aec2dc4ea8be8b4..99cc791892bce0bbd11ece39e0725e0712345e3f 100644 (file)
--- a/drivers/perf/amlogic/meson_g12_ddr_pmu.c
+++ b/drivers/perf/amlogic/meson_g12_ddr_pmu.c
@@ -355,11 +355,9 @@ static int g12_ddr_pmu_probe(struct platform_device *pdev)
        return meson_ddr_pmu_create(pdev);
 }
 
-static int g12_ddr_pmu_remove(struct platform_device *pdev)
+static void g12_ddr_pmu_remove(struct platform_device *pdev)
 {
        meson_ddr_pmu_remove(pdev);
-
-       return 0;
 }
 
 static const struct of_device_id meson_ddr_pmu_dt_match[] = {
@@ -381,7 +379,7 @@ MODULE_DEVICE_TABLE(of, meson_ddr_pmu_dt_match);
 
 static struct platform_driver g12_ddr_pmu_driver = {
        .probe = g12_ddr_pmu_probe,
-       .remove = g12_ddr_pmu_remove,
+       .remove_new = g12_ddr_pmu_remove,
 
        .driver = {
                .name = "meson-g12-ddr-pmu",