[PATCH 79/89] i2c: wmt: Convert to platform remove callback returning void

Uwe Kleine-König u.kleine-koenig at pengutronix.de
Mon May 8 13:52:56 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/i2c/busses/i2c-wmt.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/i2c/busses/i2c-wmt.c b/drivers/i2c/busses/i2c-wmt.c
index 7d4bc8736079..736acaa538d2 100644
--- a/drivers/i2c/busses/i2c-wmt.c
+++ b/drivers/i2c/busses/i2c-wmt.c
@@ -436,7 +436,7 @@ static int wmt_i2c_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int wmt_i2c_remove(struct platform_device *pdev)
+static void wmt_i2c_remove(struct platform_device *pdev)
 {
 	struct wmt_i2c_dev *i2c_dev = platform_get_drvdata(pdev);
 
@@ -444,8 +444,6 @@ static int wmt_i2c_remove(struct platform_device *pdev)
 	writew(0, i2c_dev->base + REG_IMR);
 	clk_disable_unprepare(i2c_dev->clk);
 	i2c_del_adapter(&i2c_dev->adapter);
-
-	return 0;
 }
 
 static const struct of_device_id wmt_i2c_dt_ids[] = {
@@ -455,7 +453,7 @@ static const struct of_device_id wmt_i2c_dt_ids[] = {
 
 static struct platform_driver wmt_i2c_driver = {
 	.probe		= wmt_i2c_probe,
-	.remove		= wmt_i2c_remove,
+	.remove_new	= wmt_i2c_remove,
 	.driver		= {
 		.name	= "wmt-i2c",
 		.of_match_table = wmt_i2c_dt_ids,
-- 
2.39.2




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