linux-kernel - Re: [PATCH v3] pci: controller: pci-ftpci100: Release the clock resources

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Date:   Mon, 29 May 2023 10:24:42 +0200
From:   Lorenzo Pieralisi <lpieralisi@...nel.org>
To:     Krzysztof Wilczyński <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