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Message-ID: <CAL_JsqJjm12LxpDg6LmpY=Ro_keHwnrWiYMLVnG=s_pSP4X2WQ@mail.gmail.com>
Date: Mon, 24 Nov 2025 11:01:45 -0600
From: Rob Herring <robh@...nel.org>
To: Kalle Niemi <kaleposti@...il.com>
Cc: Herve Codina <herve.codina@...tlin.com>, Andrew Lunn <andrew@...n.ch>,
Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>, "Rafael J. Wysocki" <rafael@...nel.org>,
Danilo Krummrich <dakr@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>, Pengutronix Kernel Team <kernel@...gutronix.de>,
Fabio Estevam <festevam@...il.com>, Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>, Andi Shyti <andi.shyti@...nel.org>,
Wolfram Sang <wsa+renesas@...g-engineering.com>, Peter Rosin <peda@...ntia.se>,
Arnd Bergmann <arnd@...db.de>, Saravana Kannan <saravanak@...gle.com>,
Bjorn Helgaas <bhelgaas@...gle.com>, Charles Keepax <ckeepax@...nsource.cirrus.com>,
Richard Fitzgerald <rf@...nsource.cirrus.com>, David Rhodes <david.rhodes@...rus.com>,
Linus Walleij <linus.walleij@...aro.org>, Ulf Hansson <ulf.hansson@...aro.org>,
Mark Brown <broonie@...nel.org>, Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
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Sakari Ailus <sakari.ailus@...ux.intel.com>, Len Brown <lenb@...nel.org>,
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Vishal Verma <vishal.l.verma@...el.com>, Ira Weiny <ira.weiny@...el.com>,
Dan Williams <dan.j.williams@...el.com>, Geert Uytterhoeven <geert+renesas@...der.be>,
Wolfram Sang <wsa@...nel.org>, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
linux-clk@...r.kernel.org, linux-i2c@...r.kernel.org,
linux-pci@...r.kernel.org, linux-sound@...r.kernel.org,
patches@...nsource.cirrus.com, linux-gpio@...r.kernel.org,
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linux-acpi@...r.kernel.org, linux-cxl@...r.kernel.org,
Allan Nielsen <allan.nielsen@...rochip.com>, Horatiu Vultur <horatiu.vultur@...rochip.com>,
Steen Hegelund <steen.hegelund@...rochip.com>, Luca Ceresoli <luca.ceresoli@...tlin.com>,
Thomas Petazzoni <thomas.petazzoni@...tlin.com>, mazziesaccount@...il.com
Subject: Re: [PATCH v4 01/29] Revert "treewide: Fix probing of devices in DT overlays"
On Mon, Nov 24, 2025 at 10:44 AM Kalle Niemi <kaleposti@...il.com> wrote:
>
>
> On 11/24/25 16:53, Rob Herring wrote:
> > On Mon, Nov 24, 2025 at 8:48 AM Kalle Niemi <kaleposti@...il.com> wrote:
> >> On 10/15/25 10:13, Herve Codina wrote:
> >>> From: Saravana Kannan <saravanak@...gle.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@...tlin.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@...gle.com>
> >>> Link: https://lore.kernel.org/lkml/20240411235623.1260061-2-saravanak@google.com/
> >>> Signed-off-by: Herve Codina <herve.codina@...tlin.com>
> >>> Acked-by: Mark Brown <broonie@...nel.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
>
> Yes the driver is in mainline linux: /drivers/mfd/rohm-bd718x7.c
I don't see any support to apply overlays in that driver.
Rob
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