Em Tue, 27 Apr 2021 14:47:01 +0300
Dmitry Osipenko <dig...@gmail.com> escreveu:

> 27.04.2021 13:26, Mauro Carvalho Chehab пишет:
> > @@ -1088,8 +1090,9 @@ static int tegra_vde_remove(struct platform_device 
> > *pdev)
> >  {
> >     struct tegra_vde *vde = platform_get_drvdata(pdev);
> >     struct device *dev = &pdev->dev;
> > +   int ret;
> >  
> > -   pm_runtime_get_sync(dev);
> > +   ret = pm_runtime_resume_and_get(dev);  
> 
> Should be cleaner to return error directly here, IMO.

I double-checked how drivers/base/platform.c deals with non-zero
returns at the .remove method:

        static int platform_remove(struct device *_dev)
        {
                struct platform_driver *drv = to_platform_driver(_dev->driver);
                struct platform_device *dev = to_platform_device(_dev);
        
                if (drv->remove) {
                        int ret = drv->remove(dev);
        
                        if (ret)
                                dev_warn(_dev, "remove callback returned a 
non-zero value. This will be ignored.\n");
                }
                dev_pm_domain_detach(_dev, true);
        
                return 0;
        }

Basically, it will print a message but will ignore whatever happens
afterwards.

So, if the driver is changed to return an error there, it will leak
resources.

Thanks,
Mauro
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