[PATCH 08/49] mtd: rawnand: au1550nd: Convert to platform remove callback returning void

Uwe Kleine-König u.kleine-koenig at pengutronix.de
Sat Apr 1 09:18:57 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 (mostly) ignored
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.

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/nand/raw/au1550nd.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/mtd/nand/raw/au1550nd.c b/drivers/mtd/nand/raw/au1550nd.c
index 5aa3a06d740c..063a5e0b8d4b 100644
--- a/drivers/mtd/nand/raw/au1550nd.c
+++ b/drivers/mtd/nand/raw/au1550nd.c
@@ -337,7 +337,7 @@ static int au1550nd_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int au1550nd_remove(struct platform_device *pdev)
+static void au1550nd_remove(struct platform_device *pdev)
 {
 	struct au1550nd_ctx *ctx = platform_get_drvdata(pdev);
 	struct resource *r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -350,7 +350,6 @@ static int au1550nd_remove(struct platform_device *pdev)
 	iounmap(ctx->base);
 	release_mem_region(r->start, 0x1000);
 	kfree(ctx);
-	return 0;
 }
 
 static struct platform_driver au1550nd_driver = {
@@ -358,7 +357,7 @@ static struct platform_driver au1550nd_driver = {
 		.name	= "au1550-nand",
 	},
 	.probe		= au1550nd_probe,
-	.remove		= au1550nd_remove,
+	.remove_new	= au1550nd_remove,
 };
 
 module_platform_driver(au1550nd_driver);
-- 
2.39.2




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