linux-kernel - Re: [PATCH] PCI/pwrctrl: Propagate dev_err

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Message-ID: <841b701a-ab6f-463e-b344-b3d9ffa34d76@web.de>
Date: Sat, 18 Oct 2025 17:13:20 +0200
From: Markus Elfring <Markus.Elfring@....de>
To: Anand Moon <linux.amoon@...il.com>, linux-pci@...r.kernel.org,
 Bartosz Golaszewski <brgl@...ev.pl>, Bjorn Helgaas <bhelgaas@...gle.com>
Cc: LKML <linux-kernel@...r.kernel.org>, kernel-janitors@...r.kernel.org,
 Christophe Jaillet <christophe.jaillet@...adoo.fr>
Subject: Re: [PATCH] PCI/pwrctrl: Propagate dev_err_probe return value

> Ensure that the return value from dev_err_probe() is consistently assigned
> back to return in all error paths within pci_pwrctrl_slot_probe()
> function. This ensures the original error code are propagation for
> debugging.

I find the change description improvable.


I propose to take another source code transformation approach into account.
https://elixir.bootlin.com/linux/v6.17.1/source/drivers/base/core.c#L5031-L5075

Example:
https://elixir.bootlin.com/linux/v6.17.1/source/drivers/pci/pwrctrl/slot.c#L30-L80

	ret = dev_err_probe(dev,
			    of_regulator_bulk_get_all(dev, dev_of_node(dev), &slot->supplies),
			    "Failed to get slot regulators\n");
	if (ret)
		return ret;


Regards,
Markus