| Message ID | 20230507162616.1368908-12-u.kleine-koenig@pengutronix.de (mailing list archive) |
|---|---|
| State | Accepted, archived |
| Headers | show |
| Series | drm: Convert to platform remove callback returning void | expand |
Hi Uwe, Thank you for the patch. On Sun, May 07, 2023 at 06:25:34PM +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: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > --- > drivers/gpu/drm/bridge/lvds-codec.c | 6 ++---- > 1 file changed, 2 insertions(+), 4 deletions(-) > > diff --git a/drivers/gpu/drm/bridge/lvds-codec.c b/drivers/gpu/drm/bridge/lvds-codec.c > index 39e7004de720..67368f23d4aa 100644 > --- a/drivers/gpu/drm/bridge/lvds-codec.c > +++ b/drivers/gpu/drm/bridge/lvds-codec.c > @@ -215,13 +215,11 @@ static int lvds_codec_probe(struct platform_device *pdev) > return 0; > } > > -static int lvds_codec_remove(struct platform_device *pdev) > +static void lvds_codec_remove(struct platform_device *pdev) > { > struct lvds_codec *lvds_codec = platform_get_drvdata(pdev); > > drm_bridge_remove(&lvds_codec->bridge); > - > - return 0; > } > > static const struct of_device_id lvds_codec_match[] = { > @@ -243,7 +241,7 @@ MODULE_DEVICE_TABLE(of, lvds_codec_match); > > static struct platform_driver lvds_codec_driver = { > .probe = lvds_codec_probe, > - .remove = lvds_codec_remove, > + .remove_new = lvds_codec_remove, > .driver = { > .name = "lvds-codec", > .of_match_table = lvds_codec_match, > -- > 2.39.2 >
diff --git a/drivers/gpu/drm/bridge/lvds-codec.c b/drivers/gpu/drm/bridge/lvds-codec.c index 39e7004de720..67368f23d4aa 100644 --- a/drivers/gpu/drm/bridge/lvds-codec.c +++ b/drivers/gpu/drm/bridge/lvds-codec.c @@ -215,13 +215,11 @@ static int lvds_codec_probe(struct platform_device *pdev) return 0; } -static int lvds_codec_remove(struct platform_device *pdev) +static void lvds_codec_remove(struct platform_device *pdev) { struct lvds_codec *lvds_codec = platform_get_drvdata(pdev); drm_bridge_remove(&lvds_codec->bridge); - - return 0; } static const struct of_device_id lvds_codec_match[] = { @@ -243,7 +241,7 @@ MODULE_DEVICE_TABLE(of, lvds_codec_match); static struct platform_driver lvds_codec_driver = { .probe = lvds_codec_probe, - .remove = lvds_codec_remove, + .remove_new = lvds_codec_remove, .driver = { .name = "lvds-codec", .of_match_table = lvds_codec_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/gpu/drm/bridge/lvds-codec.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)