linux-kernel - Re: [PATCH v1 9/9] of: property: Simplify of_link_to

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Message-ID: <YvoglKDbsDLHq2S0@atomide.com>
Date:   Mon, 15 Aug 2022 13:31:48 +0300
From:   Tony Lindgren <tony@...mide.com>
To:     Saravana Kannan <saravanak@...gle.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Magnus Damm <magnus.damm@...il.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Daniel Scally <djrscally@...il.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Len Brown <lenb@...nel.org>, Abel Vesa <abel.vesa@...aro.org>,
        Alexander Stein <alexander.stein@...tq-group.com>,
        Sudeep Holla <sudeep.holla@....com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        John Stultz <jstultz@...gle.com>,
        Doug Anderson <dianders@...omium.org>,
        Guenter Roeck <linux@...ck-us.net>, kernel-team@...roid.com,
        linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
        devicetree@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        linux-acpi@...r.kernel.org
Subject: Re: [PATCH v1 9/9] of: property: Simplify of_link_to_phandle()

* Saravana Kannan <saravanak@...gle.com> [220813 00:30]:
> On Fri, Aug 12, 2022 at 2:47 AM Tony Lindgren <tony@...mide.com> wrote:
> >
> > Hi,
> >
> > * Saravana Kannan <saravanak@...gle.com> [220810 05:54]:
> > > The driver core now:
> > > - Has the parent device of a supplier pick up the consumers if the
> > >   supplier never has a device created for it.
> > > - Ignores a supplier if the supplier has no parent device and will never
> > >   be probed by a driver
> > >
> > > And already prevents creating a device link with the consumer as a
> > > supplier of a parent.
> > >
> > > So, we no longer need to find the "compatible" node of the supplier or
> > > do any other checks in of_link_to_phandle(). We simply need to make sure
> > > that the supplier is available in DT.
> >
> > This patch fixes booting for me, so it should be applied as a fix and
> > tagged with:
> >
> > Fixes: 5a46079a9645 ("PM: domains: Delete usage of driver_deferred_probe_check_state()")
> >
> > If there are dependencies to the other patches in this series, it might
> > make sense to revert commit 5a46079a9645 instead.
> 
> Yes, there are dependencies on the rest of the patches in this series.
> For linux-next, I think we should pick up this series once we get more
> Tested-bys.
> 
>  So if 5a46079a9645 is causing any regression in stable branches, we
> should pick up the revert series [1] instead of this series we are
> replying to.

Agreed we should apply the reverts in [1] for v6.0-rc series. At least
several generations of the TI 32-bit ARM SoCs are failing to boot
otherwise.

Regards,

Tony