linux-kernel - Re: [PATCH 19/25] fix error return code

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Message-ID: <CAMuHMdWQ5oiXsL7j3T0yuDhFe6uumwcv0S1Ym-L+uTwqqAvCcA@mail.gmail.com>
Date:	Sun, 29 Dec 2013 22:58:02 +0100
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Julia Lawall <Julia.Lawall@...6.fr>
Cc:	Geoff Levand <geoff@...radead.org>,
	"kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>,
	"James E.J. Bottomley" <JBottomley@...allels.com>,
	"linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
	"cbe-oss-dev@...ts.ozlabs.org" <cbe-oss-dev@...ts.ozlabs.org>,
	scsi <linux-scsi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 19/25] fix error return code

On Sun, Dec 29, 2013 at 11:47 PM, Julia Lawall <Julia.Lawall@...6.fr> wrote:
> From: Julia Lawall <Julia.Lawall@...6.fr>
>
> Set the return variable to an error code 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>

Acked-by: Geert Uytterhoeven <geert@...ux-m68k.org>

> ---
> Not tested.
>
>  drivers/scsi/ps3rom.c |    1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/scsi/ps3rom.c b/drivers/scsi/ps3rom.c
> index e6e2a30..04d77ce 100644
> --- a/drivers/scsi/ps3rom.c
> +++ b/drivers/scsi/ps3rom.c
> @@ -387,6 +387,7 @@ static int ps3rom_probe(struct ps3_system_bus_device *_dev)
>         if (!host) {
>                 dev_err(&dev->sbd.core, "%s:%u: scsi_host_alloc failed\n",
>                         __func__, __LINE__);
> +               error = -ENOMEM;
>                 goto fail_teardown;

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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