[PATCH 14/89] i2c: cpm: Convert to platform remove callback returning void

Uwe Kleine-König u.kleine-koenig at pengutronix.de
Tue May 9 06:51:51 AEST 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-cpm.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/i2c/busses/i2c-cpm.c b/drivers/i2c/busses/i2c-cpm.c
index 24d584a1c9a7..732daf6a932b 100644
--- a/drivers/i2c/busses/i2c-cpm.c
+++ b/drivers/i2c/busses/i2c-cpm.c
@@ -676,7 +676,7 @@ static int cpm_i2c_probe(struct platform_device *ofdev)
 	return result;
 }
 
-static int cpm_i2c_remove(struct platform_device *ofdev)
+static void cpm_i2c_remove(struct platform_device *ofdev)
 {
 	struct cpm_i2c *cpm = platform_get_drvdata(ofdev);
 
@@ -685,8 +685,6 @@ static int cpm_i2c_remove(struct platform_device *ofdev)
 	cpm_i2c_shutdown(cpm);
 
 	kfree(cpm);
-
-	return 0;
 }
 
 static const struct of_device_id cpm_i2c_match[] = {
@@ -703,7 +701,7 @@ MODULE_DEVICE_TABLE(of, cpm_i2c_match);
 
 static struct platform_driver cpm_i2c_driver = {
 	.probe		= cpm_i2c_probe,
-	.remove		= cpm_i2c_remove,
+	.remove_new	= cpm_i2c_remove,
 	.driver = {
 		.name = "fsl-i2c-cpm",
 		.of_match_table = cpm_i2c_match,
-- 
2.39.2



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