linux-kernel - Re: [PATCH 2/8] PCI: brcmstb: Use "clk

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Message-ID: <f90b597d-1e0f-497f-b092-3cb4d5f9602d@web.de>
Date: Wed, 3 Jul 2024 20:45:34 +0200
From: Markus Elfring <Markus.Elfring@....de>
To: Jim Quinlan <james.quinlan@...adcom.com>, linux-pci@...r.kernel.org,
 bcm-kernel-feedback-list@...adcom.com, linux-arm-kernel@...ts.infradead.org,
 linux-rpi-kernel@...ts.infradead.org, Bjorn Helgaas <bhelgaas@...gle.com>,
 Cyril Brulebois <kibi@...ian.org>,
 Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
 Nicolas Saenz Julienne <nsaenz@...nel.org>,
 Stanimir Varbanov <svarbanov@...e.de>
Cc: LKML <linux-kernel@...r.kernel.org>,
 Florian Fainelli <florian.fainelli@...adcom.com>,
 Krzysztof Wilczyński <kw@...ux.com>,
 Lorenzo Pieralisi <lpieralisi@...nel.org>, Rob Herring <robh@...nel.org>
Subject: Re: [PATCH 2/8] PCI: brcmstb: Use "clk_out" error path label

> [-- Attachment #1: Type: text/plain, Size: 1600 bytes --]

Can improved adjustments be provided as regular diff data (without an extra attachment)?

> Instead of invoking "clk_disable_unprepare(pcie->clk)" in
> a number of error paths.

* Can a wording approach (like the following) be a better change description?
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?h=v6.10-rc6#n45

  Add a jump target so that a bit of exception handling can be better reused
  at the end of this function implementation.

* How do you think about to use a summary phrase like
  “Use more common error handling code in brcm_pcie_probe()”?

…
> +++ b/drivers/pci/controller/pcie-brcmstb.c
…
>  	ret = reset_control_reset(pcie->rescal);
> -	if (ret)
> +	if (ret) {
>  		dev_err(&pdev->dev, "failed to deassert 'rescal'\n");
> +		goto clk_out;
> +	}
>
>  	ret = brcm_phy_start(pcie);
…

Does this software update complete the exception handling?

Would you like to add any tags (like “Fixes” and “Cc”) accordingly?

…
> @@ -1676,6 +1677,9 @@ static int brcm_pcie_probe(struct platform_device *pdev)
>
>  	return 0;
>
> +clk_out:
> +	clk_disable_unprepare(pcie->clk);
> +	return ret;
>  fail:
…

I suggest to add a blank line before the second label.

Regards,
Markus