linux-kernel - Re: [PATCH 02/18] char: mxser: call disable_pci_device() if pci

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Date:	Sun, 08 Aug 2010 22:29:04 +0200
From:	Jiri Slaby <jirislaby@...il.com>
To:	Kulikov Vasiliy <segooon@...il.com>
CC:	kernel-janitors@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Alan Cox <alan@...ux.intel.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 02/18] char: mxser: call disable_pci_device() if pci_probe()
 failed

On 08/06/2010 09:49 PM, Kulikov Vasiliy wrote:
> --- a/drivers/char/mxser.c
> +++ b/drivers/char/mxser.c
> @@ -2564,8 +2564,11 @@ static int __devinit mxser_probe(struct pci_dev *pdev,
>  	/* vector */
>  	ioaddress = pci_resource_start(pdev, 3);
>  	retval = pci_request_region(pdev, 3, "mxser(vector)");
> -	if (retval)
> -		goto err_relio;
> +	if (retval) {
> +		pci_release_region(pdev, 2);
> +		brd->info = NULL;
> +		goto err;
> +	}
>  	brd->vector = ioaddress;
>  
>  	/* irq */
> @@ -2616,10 +2619,11 @@ static int __devinit mxser_probe(struct pci_dev *pdev,
>  	pci_set_drvdata(pdev, brd);
>  
>  	return 0;
> -err_relio:
> -	pci_release_region(pdev, 2);
>  err_null:
>  	brd->info = NULL;
> +	pci_release_region(pdev, 2);
> +	pci_release_region(pdev, 3);
> +	pci_disable_device(pdev);

Why did you reorder this so that you cannot jump here from the fail path
above?

thanks,
-- 
js
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