linux-kernel - Re: [PATCH 7/9] sound/pci/sis7019.c: fix error return code

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Date:	Sun, 5 Apr 2015 14:13:17 +0200 (CEST)
From:	Julia Lawall <julia.lawall@...6.fr>
To:	Julia Lawall <Julia.Lawall@...6.fr>
cc:	Jaroslav Kysela <perex@...ex.cz>, kernel-janitors@...r.kernel.org,
	Takashi Iwai <tiwai@...e.de>, alsa-devel@...a-project.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 7/9] sound/pci/sis7019.c: fix error return code

Please ignore. Wrong patch set.

On Sun, 5 Apr 2015, Julia Lawall wrote:

> From: Julia Lawall <Julia.Lawall@...6.fr>
> 
> Initialize rc before returning on failure, as done elsewhere in the
> function.
> 
> A simplified version of the semantic match that finds this problem is as
> follows: (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> (
> if@p1 (\(ret < 0\|ret != 0\))
>  { ... return ret; }
> |
> ret@p1 = 0
> )
> ... when != ret = e1
>     when != &ret
> *if(...)
> {
>   ... when != ret = e2
>       when forall
>  return ret;
> }
> 
> // </smpl>
> 
> Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>
> 
> ---
>  sound/pci/sis7019.c |    5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/sound/pci/sis7019.c b/sound/pci/sis7019.c
> index 535efe2..51e4340 100644
> --- a/sound/pci/sis7019.c
> +++ b/sound/pci/sis7019.c
> @@ -1377,8 +1377,9 @@ static int __devinit sis_chip_create(struct snd_card *card,
>  	if (rc)
>  		goto error_out_cleanup;
>  
> -	if (request_irq(pci->irq, sis_interrupt, IRQF_SHARED, KBUILD_MODNAME,
> -			sis)) {
> +	rc = request_irq(pci->irq, sis_interrupt, IRQF_SHARED, KBUILD_MODNAME,
> +			 sis);
> +	if (rc) {
>  		dev_err(&pci->dev, "unable to allocate irq %d\n", sis->irq);
>  		goto error_out_cleanup;
>  	}
> --
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