| Message ID | 20230326143224.572654-61-u.kleine-koenig@pengutronix.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | media: Convert to platform remove callback returning void | expand |
On Sun, Mar 26, 2023 at 4:33 PM Uwe Kleine-König <u.kleine-koenig@pengutronix.de> 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: Geert Uytterhoeven <geert+renesas@glider.be> Gr{oetje,eeting}s, Geert
Quoting Uwe Kleine-König (2023-03-26 15:31:25) > 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: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> > --- > drivers/media/platform/renesas/vsp1/vsp1_drv.c | 6 ++---- > 1 file changed, 2 insertions(+), 4 deletions(-) > > diff --git a/drivers/media/platform/renesas/vsp1/vsp1_drv.c b/drivers/media/platform/renesas/vsp1/vsp1_drv.c > index 5710152d6511..c1c28f98bd10 100644 > --- a/drivers/media/platform/renesas/vsp1/vsp1_drv.c > +++ b/drivers/media/platform/renesas/vsp1/vsp1_drv.c > @@ -977,7 +977,7 @@ static int vsp1_probe(struct platform_device *pdev) > return ret; > } > > -static int vsp1_remove(struct platform_device *pdev) > +static void vsp1_remove(struct platform_device *pdev) > { > struct vsp1_device *vsp1 = platform_get_drvdata(pdev); > > @@ -985,8 +985,6 @@ static int vsp1_remove(struct platform_device *pdev) > rcar_fcp_put(vsp1->fcp); > > pm_runtime_disable(&pdev->dev); > - > - return 0; > } > > static const struct of_device_id vsp1_of_match[] = { > @@ -999,7 +997,7 @@ MODULE_DEVICE_TABLE(of, vsp1_of_match); > > static struct platform_driver vsp1_platform_driver = { > .probe = vsp1_probe, > - .remove = vsp1_remove, > + .remove_new = vsp1_remove, > .driver = { > .name = "vsp1", > .pm = &vsp1_pm_ops, > -- > 2.39.2 >
diff --git a/drivers/media/platform/renesas/vsp1/vsp1_drv.c b/drivers/media/platform/renesas/vsp1/vsp1_drv.c index 5710152d6511..c1c28f98bd10 100644 --- a/drivers/media/platform/renesas/vsp1/vsp1_drv.c +++ b/drivers/media/platform/renesas/vsp1/vsp1_drv.c @@ -977,7 +977,7 @@ static int vsp1_probe(struct platform_device *pdev) return ret; } -static int vsp1_remove(struct platform_device *pdev) +static void vsp1_remove(struct platform_device *pdev) { struct vsp1_device *vsp1 = platform_get_drvdata(pdev); @@ -985,8 +985,6 @@ static int vsp1_remove(struct platform_device *pdev) rcar_fcp_put(vsp1->fcp); pm_runtime_disable(&pdev->dev); - - return 0; } static const struct of_device_id vsp1_of_match[] = { @@ -999,7 +997,7 @@ MODULE_DEVICE_TABLE(of, vsp1_of_match); static struct platform_driver vsp1_platform_driver = { .probe = vsp1_probe, - .remove = vsp1_remove, + .remove_new = vsp1_remove, .driver = { .name = "vsp1", .pm = &vsp1_pm_ops,
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/media/platform/renesas/vsp1/vsp1_drv.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)