Re: [PATCH 01/12] PM / core: Add NEVER_SKIP and SMART_PREPARE driver flags

From: Greg Kroah-Hartman
Date: Tue Oct 17 2017 - 09:26:43 EST


On Tue, Oct 17, 2017 at 12:07:37AM +0200, Rafael J. Wysocki wrote:
> On Monday, October 16, 2017 8:31:22 AM CEST Greg Kroah-Hartman wrote:
> > On Mon, Oct 16, 2017 at 03:29:02AM +0200, Rafael J. Wysocki wrote:
> > > +static inline void dev_pm_set_driver_flags(struct device *dev, unsigned int flags)
> > > +{
> > > + dev->power.driver_flags = flags;
> > > +}
> >
> > Should this function just set the specific bit? Or is it going to be ok
> > to set the whole value, meaning you aren't going to care about turning
> > on and off specific flags over the lifetime of the driver/device, you
> > are just going to set them once and then just test them as needed?
>
> The idea is to set them once and they should not be touched again until
> the driver (or device) goes away, so that would be the whole value at once
> (and one of the i2c-designware-platdrv patches actually sets multiple flags
> in one go).

Ok, thanks.