Re: [PATCH] PM: Fix dev_pm_put_subsys_data() to not call kfree()while holding device power lock

[Pavel Machek]

Hi!

> > Wow, that function is fragile. It returns 0/1/-EINVAL, while being
> > documented for 0/1...
> 
> Oh, it generally should return 1 for !psd.
> 
> > Patch does not look obviously wrong, but maybe 
> > 
> > @@ -73,13 +73,17 @@ int dev_pm_put_subsys_data(struct device *dev)
> >  
> >  	if (--psd->refcount == 0) {
> >  		dev->power.subsys_data = NULL;
> > +		spin_unlock_irq(&dev->power.lock);
> > -		kfree(psd);
> > - 		ret = 1;
> > +		return 1;
> >  	}
> > 
> > Would be cleaner.
> 
> What about this:

Looks good to me.

Reviewed-by: Pavel Machek <pavel@xxxxxx>

									Pavel

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