perf: thunderx2: 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/7be677dfa13d3a7eab6eef0d808ba8a9855d14ae.1702648125.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Will Deacon <will@kernel.org>

diff --git a/drivers/perf/thunderx2_pmu.c b/drivers/perf/thunderx2_pmu.c
index 1edb9c03704fd9aea0d9e51e672e139ed4ce17f2..e16d10c763de193d5ef77949c8836d62c0358b44 100644 (file)
--- a/drivers/perf/thunderx2_pmu.c
+++ b/drivers/perf/thunderx2_pmu.c
@@ -993,7 +993,7 @@ static int tx2_uncore_probe(struct platform_device *pdev)
        return 0;
 }
 
-static int tx2_uncore_remove(struct platform_device *pdev)
+static void tx2_uncore_remove(struct platform_device *pdev)
 {
        struct tx2_uncore_pmu *tx2_pmu, *temp;
        struct device *dev = &pdev->dev;
@@ -1009,7 +1009,6 @@ static int tx2_uncore_remove(struct platform_device *pdev)
                        }
                }
        }
-       return 0;
 }
 
 static struct platform_driver tx2_uncore_driver = {
@@ -1019,7 +1018,7 @@ static struct platform_driver tx2_uncore_driver = {
                .suppress_bind_attrs = true,
        },
        .probe = tx2_uncore_probe,
-       .remove = tx2_uncore_remove,
+       .remove_new = tx2_uncore_remove,
 };
 
 static int __init tx2_uncore_driver_init(void)