linux-kernel - Re: [PATCH 1/3] PCI: j721e: Propagate dev_err

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Message-ID: <a2cefc72-de44-4a23-92d2-44b58c8c13fe@web.de>
Date: Sat, 18 Oct 2025 10:56:13 +0200
From: Markus Elfring <Markus.Elfring@....de>
To: Anand Moon <linux.amoon@...il.com>, linux-pci@...r.kernel.org,
 linux-omap@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 Bjorn Helgaas <bhelgaas@...gle.com>,
 Krzysztof Wilczyński <kwilczynski@...nel.org>,
 Lorenzo Pieralisi <lpieralisi@...nel.org>,
 Manivannan Sadhasivam <mani@...nel.org>, Rob Herring <robh@...nel.org>,
 Siddharth Vadapalli <s-vadapalli@...com>,
 Vignesh Raghavendra <vigneshr@...com>
Cc: LKML <linux-kernel@...r.kernel.org>, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 1/3] PCI: j721e: Propagate dev_err_probe return value

> Ensure that the return value from dev_err_probe() is consistently assigned
> back to ret in all error paths within j721e_pcie_probe(). 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 better 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/controller/cadence/pci-j721e.c#L444-L636

	ret = dev_err_probe(dev, cdns_pcie_init_phy(dev, cdns_pcie), "Failed to init phy\n");
	if (ret)
		goto err_get_sync;


How do you think about to achieve such a source code variant also with the help of
the semantic patch language (Coccinelle software)?

Regards,
Markus