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

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Message-ID: <aWVKTnatLTGwmNVh@smile.fi.intel.com>
Date: Mon, 12 Jan 2026 21:23:58 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: manivannan.sadhasivam@....qualcomm.com
Cc: 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>,
	Manivannan Sadhasivam <mani@...nel.org>,
	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 09:56:02PM +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()

>  		return -ENODEV;

-- 
With Best Regards,
Andy Shevchenko