| Message ID | 20230508205306.1474415-38-u.kleine-koenig@pengutronix.de (mailing list archive) |
|---|---|
| State | Handled Elsewhere |
| Headers | show |
| Series | i2c: Convert to platform remove callback returning void | expand |
On Mon, May 08, 2023 at 10:52:14PM +0200, Uwe Kleine-König wrote: > 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@pengutronix.de> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Thanks, Conor.
diff --git a/drivers/i2c/busses/i2c-microchip-corei2c.c b/drivers/i2c/busses/i2c-microchip-corei2c.c index 4d7e9b25f018..7f58f7eaabb6 100644 --- a/drivers/i2c/busses/i2c-microchip-corei2c.c +++ b/drivers/i2c/busses/i2c-microchip-corei2c.c @@ -446,14 +446,12 @@ static int mchp_corei2c_probe(struct platform_device *pdev) return 0; } -static int mchp_corei2c_remove(struct platform_device *pdev) +static void mchp_corei2c_remove(struct platform_device *pdev) { struct mchp_corei2c_dev *idev = platform_get_drvdata(pdev); clk_disable_unprepare(idev->i2c_clk); i2c_del_adapter(&idev->adapter); - - return 0; } static const struct of_device_id mchp_corei2c_of_match[] = { @@ -465,7 +463,7 @@ MODULE_DEVICE_TABLE(of, mchp_corei2c_of_match); static struct platform_driver mchp_corei2c_driver = { .probe = mchp_corei2c_probe, - .remove = mchp_corei2c_remove, + .remove_new = mchp_corei2c_remove, .driver = { .name = "microchip-corei2c", .of_match_table = mchp_corei2c_of_match,
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@pengutronix.de> --- drivers/i2c/busses/i2c-microchip-corei2c.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)