[PATCH 29/89] i2c: imx-lpi2c: Convert to platform remove callback returning void

Uwe Kleine-König u.kleine-koenig at pengutronix.de
Mon May 8 13:52:06 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-imx-lpi2c.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/i2c/busses/i2c-imx-lpi2c.c b/drivers/i2c/busses/i2c-imx-lpi2c.c
index 1af0a637d7f1..48e695880d0a 100644
--- a/drivers/i2c/busses/i2c-imx-lpi2c.c
+++ b/drivers/i2c/busses/i2c-imx-lpi2c.c
@@ -623,7 +623,7 @@ static int lpi2c_imx_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int lpi2c_imx_remove(struct platform_device *pdev)
+static void lpi2c_imx_remove(struct platform_device *pdev)
 {
 	struct lpi2c_imx_struct *lpi2c_imx = platform_get_drvdata(pdev);
 
@@ -631,8 +631,6 @@ static int lpi2c_imx_remove(struct platform_device *pdev)
 
 	pm_runtime_disable(&pdev->dev);
 	pm_runtime_dont_use_autosuspend(&pdev->dev);
-
-	return 0;
 }
 
 static int __maybe_unused lpi2c_runtime_suspend(struct device *dev)
@@ -669,7 +667,7 @@ static const struct dev_pm_ops lpi2c_pm_ops = {
 
 static struct platform_driver lpi2c_imx_driver = {
 	.probe = lpi2c_imx_probe,
-	.remove = lpi2c_imx_remove,
+	.remove_new = lpi2c_imx_remove,
 	.driver = {
 		.name = DRIVER_NAME,
 		.of_match_table = lpi2c_imx_of_match,
-- 
2.39.2




More information about the linux-arm-kernel mailing list