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Message-Id: <168534865675.10610.11781973164480184341.b4-ty@kernel.org>
Date: Mon, 29 May 2023 10:24:42 +0200
From: Lorenzo Pieralisi <lpieralisi@...nel.org>
To: Krzysztof WilczyĆski <kw@...ux.com>,
Rob Herring <robh@...nel.org>,
Bjorn Helgaas <bhelgaas@...gle.com>,
Wei Yongjun <weiyongjun1@...wei.com>,
Linus Walleij <linus.walleij@...aro.org>,
Andrew Murray <amurray@...goodpenguin.co.uk>,
Junyan Ye <yejunyan@...t.edu.cn>
Cc: Lorenzo Pieralisi <lpieralisi@...nel.org>,
hust-os-kernel-patches@...glegroups.com,
Dongliang Mu <dzm91@...t.edu.cn>, linux-pci@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] pci: controller: pci-ftpci100: Release the clock resources
On Mon, 08 May 2023 12:36:41 +0800, Junyan Ye wrote:
> Smatch reported:
> 1. drivers/pci/controller/pci-ftpci100.c:526 faraday_pci_probe() warn:
> 'clk' from clk_prepare_enable() not released on lines: 442,451,462,478,512,517.
> 2. drivers/pci/controller/pci-ftpci100.c:526 faraday_pci_probe() warn:
> 'p->bus_clk' from clk_prepare_enable() not released on lines: 451,462,478,512,517.
>
> The clock resource is obtained by devm_clk_get(), and then
> clk_prepare_enable() makes the clock resource ready for use. After that,
> clk_disable_unprepare() should be called to release the clock resource
> when it is no longer needed. However, while doing some error handling
> in faraday_pci_probe(), clk_disable_unprepare() is not called to release
> clk and p->bus_clk before returning. These return lines are exactly 442,
> 451, 462, 478, 512, 517.
>
> [...]
Applied to pci/ftpci100, thanks!
[1/1] pci: controller: pci-ftpci100: Release the clock resources
https://git.kernel.org/pci/pci/c/c60738de85f4
Thanks,
Lorenzo
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