Re: [PATCH v2 1/2] of: platform: Make sure bus only devices get probed

[Saravana Kannan]

On Fri, Sep 3, 2021 at 7:29 AM Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote:
>
> Hi Ulf,
>
> On Fri, Sep 3, 2021 at 11:19 AM Ulf Hansson <ulf.hansson@xxxxxxxxxx> wrote:
> > On Fri, 3 Sept 2021 at 01:04, Saravana Kannan <saravanak@xxxxxxxxxx> wrote:
> > > fw_devlink could end up creating device links for bus only devices.
> > > However, bus only devices don't get probed and can block probe() or
> > > sync_state() [1] call backs of other devices. To avoid this, set up
> > > these devices to get probed by the simple-pm-bus.
> > >
> > > [1] - https://lore.kernel.org/lkml/CAPDyKFo9Bxremkb1dDrr4OcXSpE0keVze94Cm=zrkOVxHHxBmQ@xxxxxxxxxxxxxx/
> > > Signed-off-by: Saravana Kannan <saravanak@xxxxxxxxxx>
> > > Tested-by: Saravana Kannan <saravanak@xxxxxxxxxx>
> >
> > Again, this looks like a nice solution to the problem.
> >
> > One question though. The Kconfig SIMPLE_PM_BUS, should probably be
> > "default y" - or something along those lines to make sure fw_devlink
> > works as expected.
>
> I would love for SIMPLE_PM_BUS to go away, and all of its functionality
> to be usurped by the standard simple-bus handling.

What if SIMPLE_PM_BUS *is* the standard simple-bus handling?
Insert "I'm the captain now" meme.

I think SIMPLE_PM_BUS config should just go away and we should compile
the driver in if CONFIG_OF is selected.

-Saravana