[PATCH 10/20] mtd: hyperbus: rpc-if: Convert to platform remove callback returning void

Uwe Kleine-König u.kleine-koenig at pengutronix.de
Sun Oct 8 13:01:33 PDT 2023


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 at pengutronix.de>
---
 drivers/mtd/hyperbus/rpc-if.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/mtd/hyperbus/rpc-if.c b/drivers/mtd/hyperbus/rpc-if.c
index ef32fca5f785..b22aa57119f2 100644
--- a/drivers/mtd/hyperbus/rpc-if.c
+++ b/drivers/mtd/hyperbus/rpc-if.c
@@ -154,20 +154,18 @@ static int rpcif_hb_probe(struct platform_device *pdev)
 	return error;
 }
 
-static int rpcif_hb_remove(struct platform_device *pdev)
+static void rpcif_hb_remove(struct platform_device *pdev)
 {
 	struct rpcif_hyperbus *hyperbus = platform_get_drvdata(pdev);
 
 	hyperbus_unregister_device(&hyperbus->hbdev);
 
 	pm_runtime_disable(hyperbus->rpc.dev);
-
-	return 0;
 }
 
 static struct platform_driver rpcif_platform_driver = {
 	.probe	= rpcif_hb_probe,
-	.remove	= rpcif_hb_remove,
+	.remove_new = rpcif_hb_remove,
 	.driver	= {
 		.name	= "rpc-if-hyperflash",
 	},
-- 
2.40.1




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