linux-kernel - Re: [PATCH v2] spi: pxa2xx-pci: Fix an issue about missing call to 'pci_free_irq

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Date:   Mon, 15 Feb 2021 20:59:27 +0800
From:   Dejin Zheng <zhengdejin5@...il.com>
To:     daniel@...que.org, haojian.zhuang@...il.com,
        robert.jarzmik@...e.fr, broonie@...nel.org, jan.kiszka@...mens.com,
        andriy.shevchenko@...ux.intel.com, jarkko.nikula@...ux.intel.com,
        linux-spi@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] spi: pxa2xx-pci: Fix an issue about missing call to
 'pci_free_irq_vectors()'

On Mon, Feb 15, 2021 at 08:44:29PM +0800, Dejin Zheng wrote:

Hi All:

I'm very sorry forgot to add change list in patch v2.

v1 -> v2:
	* modify subject name  pca2xx-pci to pxa2xx-pci.
	* add jan and Jarkko's review tag.

Dejin

> Call to 'pci_free_irq_vectors()' are missing both in the error handling
> path of the probe function, and in the remove function. So add them.
> 
> Fixes: 64e02cb0bdfc7c ("spi: pca2xx-pci: Allow MSI")
> Reviewed-by: Jan Kiszka <jan.kiszka@...mens.com>
> Reviewed-by: Jarkko Nikula <jarkko.nikula@...ux.intel.com>
> Signed-off-by: Dejin Zheng <zhengdejin5@...il.com>
> ---
>  drivers/spi/spi-pxa2xx-pci.c | 13 ++++++++++---
>  1 file changed, 10 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/spi/spi-pxa2xx-pci.c b/drivers/spi/spi-pxa2xx-pci.c
> index 14fc41ed2361..1ec840e78ff4 100644
> --- a/drivers/spi/spi-pxa2xx-pci.c
> +++ b/drivers/spi/spi-pxa2xx-pci.c
> @@ -254,8 +254,10 @@ static int pxa2xx_spi_pci_probe(struct pci_dev *dev,
>  	snprintf(buf, sizeof(buf), "pxa2xx-spi.%d", ssp->port_id);
>  	ssp->clk = clk_register_fixed_rate(&dev->dev, buf , NULL, 0,
>  					   c->max_clk_rate);
> -	 if (IS_ERR(ssp->clk))
> -		return PTR_ERR(ssp->clk);
> +	if (IS_ERR(ssp->clk)) {
> +		ret = PTR_ERR(ssp->clk);
> +		goto err_irq;
> +	}
>  
>  	memset(&pi, 0, sizeof(pi));
>  	pi.fwnode = dev->dev.fwnode;
> @@ -268,12 +270,16 @@ static int pxa2xx_spi_pci_probe(struct pci_dev *dev,
>  	pdev = platform_device_register_full(&pi);
>  	if (IS_ERR(pdev)) {
>  		clk_unregister(ssp->clk);
> -		return PTR_ERR(pdev);
> +		ret = PTR_ERR(pdev);
> +		goto err_irq;
>  	}
>  
>  	pci_set_drvdata(dev, pdev);
>  
>  	return 0;
> +err_irq:
> +	pci_free_irq_vectors(dev);
> +	return ret;
>  }
>  
>  static void pxa2xx_spi_pci_remove(struct pci_dev *dev)
> @@ -283,6 +289,7 @@ static void pxa2xx_spi_pci_remove(struct pci_dev *dev)
>  
>  	spi_pdata = dev_get_platdata(&pdev->dev);
>  
> +	pci_free_irq_vectors(dev);
>  	platform_device_unregister(pdev);
>  	clk_unregister(spi_pdata->ssp.clk);
>  }
> -- 
> 2.25.0
>