lkml.org 
[lkml]   [2012]   [Aug]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
SubjectRE: [PATCH 14/14] drivers/spi/spi-s3c24xx.c: fix error return code
Date
Julia Lawall wrote:
>
> From: Julia Lawall <Julia.Lawall@lip6.fr>
>
> Initialize return variable before exiting on an error path.
>
> 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@lip6.fr>
>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>

(Cc'ed Mark Brown who is handling spi for a moment)

> ---
> Perhaps -EINVAL is not the right value in this case.
>
Well, if (pin_cs < 0) is true, it is really invalid value. So I think, it
makes sense :-)

Thanks.

Best regards,
Kgene.
--
Kukjin Kim <kgene.kim@samsung.com>, Senior Engineer,
SW Solution Development Team, Samsung Electronics Co., Ltd.

> drivers/spi/spi-s3c24xx.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/spi/spi-s3c24xx.c b/drivers/spi/spi-s3c24xx.c
> index 8ee7d79..a2a080b 100644
> --- a/drivers/spi/spi-s3c24xx.c
> +++ b/drivers/spi/spi-s3c24xx.c
> @@ -611,6 +611,7 @@ static int __devinit s3c24xx_spi_probe(struct
> platform_device *pdev)
> if (!pdata->set_cs) {
> if (pdata->pin_cs < 0) {
> dev_err(&pdev->dev, "No chipselect pin\n");
> + err = -EINVAL;
> goto err_register;
> }
>



\
 
 \ /
  Last update: 2012-08-22 12:21    [W:0.375 / U:1.668 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site