Re: [PATCH v4 01/29] Revert "treewide: Fix probing of devices in DT overlays"

[Rob Herring <robh@kernel.org>]

On Mon, Nov 24, 2025 at 8:48 AM Kalle Niemi <kaleposti@gmail.com> wrote:
>
> On 10/15/25 10:13, Herve Codina wrote:
> > From: Saravana Kannan <saravanak@google.com>
> >
> > This reverts commit 1a50d9403fb90cbe4dea0ec9fd0351d2ecbd8924.
> >
> > While the commit fixed fw_devlink overlay handling for one case, it
> > broke it for another case. So revert it and redo the fix in a separate
> > patch.
> >
> > Fixes: 1a50d9403fb9 ("treewide: Fix probing of devices in DT overlays")
> > Reported-by: Herve Codina <herve.codina@bootlin.com>
> > Closes: https://lore.kernel.org/lkml/CAMuHMdXEnSD4rRJ-o90x4OprUacN_rJgyo8x6=9F9rZ+-KzjOg@mail.gmail.com/
> > Closes: https://lore.kernel.org/all/20240221095137.616d2aaa@bootlin.com/
> > Closes: https://lore.kernel.org/lkml/20240312151835.29ef62a0@bootlin.com/
> > Signed-off-by: Saravana Kannan <saravanak@google.com>
> > Link: https://lore.kernel.org/lkml/20240411235623.1260061-2-saravanak@google.com/
> > Signed-off-by: Herve Codina <herve.codina@bootlin.com>
> > Acked-by: Mark Brown <broonie@kernel.org>
> > ---
> >   drivers/bus/imx-weim.c    | 6 ------
> >   drivers/i2c/i2c-core-of.c | 5 -----
> >   drivers/of/dynamic.c      | 1 -
> >   drivers/of/platform.c     | 5 -----
> >   drivers/spi/spi.c         | 5 -----
> >   5 files changed, 22 deletions(-)
> >
> > diff --git a/drivers/bus/imx-weim.c b/drivers/bus/imx-weim.c
> > index 83d623d97f5f..87070155b057 100644
> > --- a/drivers/bus/imx-weim.c
> > +++ b/drivers/bus/imx-weim.c
> > @@ -327,12 +327,6 @@ static int of_weim_notify(struct notifier_block *nb, unsigned long action,
> >                                "Failed to setup timing for '%pOF'\n", rd->dn);
> >
> >               if (!of_node_check_flag(rd->dn, OF_POPULATED)) {
> > -                     /*
> > -                      * Clear the flag before adding the device so that
> > -                      * fw_devlink doesn't skip adding consumers to this
> > -                      * device.
> > -                      */
> > -                     rd->dn->fwnode.flags &= ~FWNODE_FLAG_NOT_DEVICE;
> >                       if (!of_platform_device_create(rd->dn, NULL, &pdev->dev)) {
> >                               dev_err(&pdev->dev,
> >                                       "Failed to create child device '%pOF'\n",
> > diff --git a/drivers/i2c/i2c-core-of.c b/drivers/i2c/i2c-core-of.c
> > index eb7fb202355f..30b48a428c0b 100644
> > --- a/drivers/i2c/i2c-core-of.c
> > +++ b/drivers/i2c/i2c-core-of.c
> > @@ -176,11 +176,6 @@ static int of_i2c_notify(struct notifier_block *nb, unsigned long action,
> >                       return NOTIFY_OK;
> >               }
> >
> > -             /*
> > -              * Clear the flag before adding the device so that fw_devlink
> > -              * doesn't skip adding consumers to this device.
> > -              */
> > -             rd->dn->fwnode.flags &= ~FWNODE_FLAG_NOT_DEVICE;
> >               client = of_i2c_register_device(adap, rd->dn);
> >               if (IS_ERR(client)) {
> >                       dev_err(&adap->dev, "failed to create client for '%pOF'\n",
> > diff --git a/drivers/of/dynamic.c b/drivers/of/dynamic.c
> > index 2eaaddcb0ec4..b5be7484fb36 100644
> > --- a/drivers/of/dynamic.c
> > +++ b/drivers/of/dynamic.c
> > @@ -225,7 +225,6 @@ static void __of_attach_node(struct device_node *np)
> >       np->sibling = np->parent->child;
> >       np->parent->child = np;
> >       of_node_clear_flag(np, OF_DETACHED);
> > -     np->fwnode.flags |= FWNODE_FLAG_NOT_DEVICE;
> >
> >       raw_spin_unlock_irqrestore(&devtree_lock, flags);
> >
> > diff --git a/drivers/of/platform.c b/drivers/of/platform.c
> > index f77cb19973a5..ef9445ba168b 100644
> > --- a/drivers/of/platform.c
> > +++ b/drivers/of/platform.c
> > @@ -739,11 +739,6 @@ static int of_platform_notify(struct notifier_block *nb,
> >               if (of_node_check_flag(rd->dn, OF_POPULATED))
> >                       return NOTIFY_OK;
> >
> > -             /*
> > -              * Clear the flag before adding the device so that fw_devlink
> > -              * doesn't skip adding consumers to this device.
> > -              */
> > -             rd->dn->fwnode.flags &= ~FWNODE_FLAG_NOT_DEVICE;
> >               /* pdev_parent may be NULL when no bus platform device */
> >               pdev_parent = of_find_device_by_node(parent);
> >               pdev = of_platform_device_create(rd->dn, NULL,
> > diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
> > index 2e0647a06890..b22944a207c9 100644
> > --- a/drivers/spi/spi.c
> > +++ b/drivers/spi/spi.c
> > @@ -4791,11 +4791,6 @@ static int of_spi_notify(struct notifier_block *nb, unsigned long action,
> >                       return NOTIFY_OK;
> >               }
> >
> > -             /*
> > -              * Clear the flag before adding the device so that fw_devlink
> > -              * doesn't skip adding consumers to this device.
> > -              */
> > -             rd->dn->fwnode.flags &= ~FWNODE_FLAG_NOT_DEVICE;
> >               spi = of_register_spi_device(ctlr, rd->dn);
> >               put_device(&ctlr->dev);
> >
> Sorry, some of you will receive this message now for second time. First
> message was sent to older series of patches.
> -
>
> Hello,
>
> Test system testing drivers for ROHM ICs bisected this commit to cause
> BD71847 drivers probe to not be called.

This driver (and overlay support) is in linux-next or something out of
tree on top of linux-next?

Rob