| Message ID | 20230508205306.1474415-43-u.kleine-koenig@pengutronix.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | i2c: Convert to platform remove callback returning void | expand |
On 08/05/2023 22:52, 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: Matthias Brugger <matthias.bgg@gmail.com> > --- > drivers/i2c/busses/i2c-mt7621.c | 6 ++---- > 1 file changed, 2 insertions(+), 4 deletions(-) > > diff --git a/drivers/i2c/busses/i2c-mt7621.c b/drivers/i2c/busses/i2c-mt7621.c > index 20eda5738ac4..f9c294e2bd3c 100644 > --- a/drivers/i2c/busses/i2c-mt7621.c > +++ b/drivers/i2c/busses/i2c-mt7621.c > @@ -332,19 +332,17 @@ static int mtk_i2c_probe(struct platform_device *pdev) > return ret; > } > > -static int mtk_i2c_remove(struct platform_device *pdev) > +static void mtk_i2c_remove(struct platform_device *pdev) > { > struct mtk_i2c *i2c = platform_get_drvdata(pdev); > > clk_disable_unprepare(i2c->clk); > i2c_del_adapter(&i2c->adap); > - > - return 0; > } > > static struct platform_driver mtk_i2c_driver = { > .probe = mtk_i2c_probe, > - .remove = mtk_i2c_remove, > + .remove_new = mtk_i2c_remove, > .driver = { > .name = "i2c-mt7621", > .of_match_table = i2c_mtk_dt_ids,
diff --git a/drivers/i2c/busses/i2c-mt7621.c b/drivers/i2c/busses/i2c-mt7621.c index 20eda5738ac4..f9c294e2bd3c 100644 --- a/drivers/i2c/busses/i2c-mt7621.c +++ b/drivers/i2c/busses/i2c-mt7621.c @@ -332,19 +332,17 @@ static int mtk_i2c_probe(struct platform_device *pdev) return ret; } -static int mtk_i2c_remove(struct platform_device *pdev) +static void mtk_i2c_remove(struct platform_device *pdev) { struct mtk_i2c *i2c = platform_get_drvdata(pdev); clk_disable_unprepare(i2c->clk); i2c_del_adapter(&i2c->adap); - - return 0; } static struct platform_driver mtk_i2c_driver = { .probe = mtk_i2c_probe, - .remove = mtk_i2c_remove, + .remove_new = mtk_i2c_remove, .driver = { .name = "i2c-mt7621", .of_match_table = i2c_mtk_dt_ids,
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-mt7621.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)