linux-kernel - Re: [PATCH v4 3/9] serdev: Do not return -ENODEV from of_serdev_register

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Message-ID: <zvwvsflb6aejqwhwbacux3v46fwlfo7m54n5apvrxdqklnq6va@qxsxhk45gopi>
Date: Wed, 14 Jan 2026 21:32:30 +0530
From: Manivannan Sadhasivam <mani@...nel.org>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: manivannan.sadhasivam@....qualcomm.com, Rob Herring <robh@...nel.org>, 
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Jiri Slaby <jirislaby@...nel.org>, 
	Nathan Chancellor <nathan@...nel.org>, Nicolas Schier <nicolas.schier@...ux.dev>, 
	Hans de Goede <hansg@...nel.org>, Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>, 
	Mark Pearson <mpearson-lenovo@...ebb.ca>, "Derek J. Clark" <derekjohn.clark@...il.com>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Marcel Holtmann <marcel@...tmann.org>, Luiz Augusto von Dentz <luiz.dentz@...il.com>, 
	Bartosz Golaszewski <brgl@...ev.pl>, Bartosz Golaszewski <brgl@...nel.org>, 
	linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org, 
	platform-driver-x86@...r.kernel.org, linux-pci@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-arm-msm@...r.kernel.org, linux-bluetooth@...r.kernel.org, linux-pm@...r.kernel.org, 
	Stephan Gerhold <stephan.gerhold@...aro.org>, Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>, 
	linux-acpi@...r.kernel.org, Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [PATCH v4 3/9] serdev: Do not return -ENODEV from
 of_serdev_register_devices() if external connector is used

On Mon, Jan 12, 2026 at 09:23:58PM +0200, Andy Shevchenko wrote:
> On Mon, Jan 12, 2026 at 09:56:02PM +0530, Manivannan Sadhasivam via B4 Relay wrote:
> 
> > If an external connector like M.2 is connected to the serdev controller
> > in DT, then the serdev devices may be created dynamically by the connector
> > driver. So do not return -ENODEV from of_serdev_register_devices() if the
> > static nodes are not found and the graph node is used.
> 
> ...
> 
> > +	if (!found && !of_graph_is_present(ctrl->dev.of_node))
> 
> dev_of_node()
> 

Ack.

- Mani

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