On 07/14/2012 06:43 PM, Julia Lawall wrote: > From: Julia Lawall <julia.law...@lip6.fr> > > Typically, the return value desired for the failure of a function with an > integer return value is a negative integer. In these cases, the return > value is sometimes a negative integer and sometimes 0, due to a subsequent > initialization of the return variable within the loop. > > A simplified version of the semantic match that finds this problem is: > (http://coccinelle.lip6.fr/) > > //<smpl> > @r exists@ > identifier ret; > position p; > constant C; > expression e1,e3,e4; > statement S; > @@ > > ret = -C > ... when != ret = e3 > when any > if@p (...) S > ... when any > if (\(ret != 0\|ret < 0\|ret > 0\) || ...) { ... return ...; } > ... when != ret = e3 > when any > *if@p (...) > { > ... when != ret = e4 > return ret; > } > //</smpl> > > Signed-off-by: Julia Lawall <julia.law...@lip6.fr>
Thanks, applied to can-next
Marc
>
> ---
> drivers/net/can/softing/softing_main.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/can/softing/softing_main.c
> b/drivers/net/can/softing/softing_main.c
> index a7c77c7..f2a221e 100644
> --- a/drivers/net/can/softing/softing_main.c
> +++ b/drivers/net/can/softing/softing_main.c
> @@ -826,12 +826,12 @@ static __devinit int softing_pdev_probe(struct
> platform_device *pdev)
> goto sysfs_failed;
> }
>
> - ret = -ENOMEM;
> for (j = 0; j < ARRAY_SIZE(card->net); ++j) {
> card->net[j] = netdev =
> softing_netdev_create(card, card->id.chip[j]);
> if (!netdev) {
> dev_alert(&pdev->dev, "failed to make can[%i]", j);
> + ret = -ENOMEM;
> goto netdev_failed;
> }
> priv = netdev_priv(card->net[j]);
>
> --
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--
Pengutronix e.K. | Marc Kleine-Budde |
Industrial Linux Solutions | Phone: +49-231-2826-924 |
Vertretung West/Dortmund | Fax: +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |
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