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From: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
To: Dinghao Liu <dinghao.liu@zju.edu.cn>
Cc: kjlu@umn.edu, Marek Vasut <marek.vasut+renesas@gmail.com>,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>,
	Rob Herring <robh@kernel.org>,
	Bjorn Helgaas <bhelgaas@google.com>,
	linux-pci@vger.kernel.org, linux-renesas-soc@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] [v2] PCI: rcar: Fix runtime PM imbalance on error
Date: Tue, 7 Jul 2020 12:16:22 +0100
Message-ID: <20200707111622.GA14935@e121166-lin.cambridge.arm.com> (raw)
In-Reply-To: <20200607093134.6393-1-dinghao.liu@zju.edu.cn>

On Sun, Jun 07, 2020 at 05:31:33PM +0800, Dinghao Liu wrote:
> pm_runtime_get_sync() increments the runtime PM usage counter even
> the call returns an error code. Thus a corresponding decrement is
> needed on the error handling path to keep the counter balanced.
> 
> Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
> ---
> 
> Changelog:
> 
> v2: - Remove unnecessary 'err_pm_put' label.
>       Refine commit message.
> ---
>  drivers/pci/controller/pcie-rcar.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)

Can you rebase it on top of v5.8-rc1 and resend it with Yoshihiro's tags
please ?

Thanks,
Lorenzo

> diff --git a/drivers/pci/controller/pcie-rcar.c b/drivers/pci/controller/pcie-rcar.c
> index 759c6542c5c8..f9595ab54bc4 100644
> --- a/drivers/pci/controller/pcie-rcar.c
> +++ b/drivers/pci/controller/pcie-rcar.c
> @@ -1143,7 +1143,7 @@ static int rcar_pcie_probe(struct platform_device *pdev)
>  	err = rcar_pcie_get_resources(pcie);
>  	if (err < 0) {
>  		dev_err(dev, "failed to request resources: %d\n", err);
> -		goto err_pm_put;
> +		goto err_pm_disable;
>  	}
>  
>  	err = clk_prepare_enable(pcie->bus_clk);
> @@ -1206,10 +1206,8 @@ static int rcar_pcie_probe(struct platform_device *pdev)
>  	irq_dispose_mapping(pcie->msi.irq2);
>  	irq_dispose_mapping(pcie->msi.irq1);
>  
> -err_pm_put:
> -	pm_runtime_put(dev);
> -
>  err_pm_disable:
> +	pm_runtime_put(dev);
>  	pm_runtime_disable(dev);
>  	pci_free_resource_list(&pcie->resources);
>  
> -- 
> 2.17.1
> 

  parent reply index

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-07  9:31 Dinghao Liu
2020-06-08  1:49 ` Yoshihiro Shimoda
2020-07-07 11:16 ` Lorenzo Pieralisi [this message]
2020-07-09  6:31   ` dinghao.liu

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