| Message ID | 20230507162616.1368908-10-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 06:25:32PM +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/fsl-ldb.c | 6 ++---- > 1 file changed, 2 insertions(+), 4 deletions(-) > > diff --git a/drivers/gpu/drm/bridge/fsl-ldb.c b/drivers/gpu/drm/bridge/fsl-ldb.c > index 6bac160b395b..450b352914f4 100644 > --- a/drivers/gpu/drm/bridge/fsl-ldb.c > +++ b/drivers/gpu/drm/bridge/fsl-ldb.c > @@ -347,13 +347,11 @@ static int fsl_ldb_probe(struct platform_device *pdev) > return 0; > } > > -static int fsl_ldb_remove(struct platform_device *pdev) > +static void fsl_ldb_remove(struct platform_device *pdev) > { > struct fsl_ldb *fsl_ldb = platform_get_drvdata(pdev); > > drm_bridge_remove(&fsl_ldb->bridge); > - > - return 0; > } > > static const struct of_device_id fsl_ldb_match[] = { > @@ -367,7 +365,7 @@ MODULE_DEVICE_TABLE(of, fsl_ldb_match); > > static struct platform_driver fsl_ldb_driver = { > .probe = fsl_ldb_probe, > - .remove = fsl_ldb_remove, > + .remove_new = fsl_ldb_remove, > .driver = { > .name = "fsl-ldb", > .of_match_table = fsl_ldb_match, > -- > 2.39.2 >
diff --git a/drivers/gpu/drm/bridge/fsl-ldb.c b/drivers/gpu/drm/bridge/fsl-ldb.c index 6bac160b395b..450b352914f4 100644 --- a/drivers/gpu/drm/bridge/fsl-ldb.c +++ b/drivers/gpu/drm/bridge/fsl-ldb.c @@ -347,13 +347,11 @@ static int fsl_ldb_probe(struct platform_device *pdev) return 0; } -static int fsl_ldb_remove(struct platform_device *pdev) +static void fsl_ldb_remove(struct platform_device *pdev) { struct fsl_ldb *fsl_ldb = platform_get_drvdata(pdev); drm_bridge_remove(&fsl_ldb->bridge); - - return 0; } static const struct of_device_id fsl_ldb_match[] = { @@ -367,7 +365,7 @@ MODULE_DEVICE_TABLE(of, fsl_ldb_match); static struct platform_driver fsl_ldb_driver = { .probe = fsl_ldb_probe, - .remove = fsl_ldb_remove, + .remove_new = fsl_ldb_remove, .driver = { .name = "fsl-ldb", .of_match_table = fsl_ldb_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/fsl-ldb.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)