Re: [2.6 patch] dvb_frontend_ioctl(): fix check-after-use

From: Manu Abraham
Date: Tue Jul 31 2007 - 23:52:41 EST


On 7/31/07, Adrian Bunk <bunk@xxxxxxxxx> wrote:
> The Coverity checker spotted that we have already oops'ed if "fe" was NULL.
>
> Since "fe" being NULL seems impossible at this point this patch removes
> the NULL check.
>
> Signed-off-by: Adrian Bunk <bunk@xxxxxxxxx>
>
> ---
> --- linux-2.6.23-rc1-mm1/drivers/media/dvb/dvb-core/dvb_frontend.c.old 2007-07-29 21:41:56.000000000 +0200
> +++ linux-2.6.23-rc1-mm1/drivers/media/dvb/dvb-core/dvb_frontend.c 2007-07-29 21:42:16.000000000 +0200
> @@ -706,11 +706,11 @@ static int dvb_frontend_ioctl(struct ino
> struct dvb_frontend_private *fepriv = fe->frontend_priv;
> int err = -EOPNOTSUPP;
>
> dprintk ("%s\n", __FUNCTION__);
>
> - if (!fe || fepriv->exit)
> + if (fepriv->exit)
> return -ENODEV;
>
> if ((file->f_flags & O_ACCMODE) == O_RDONLY &&
> (_IOC_DIR(cmd) != _IOC_READ || cmd == FE_GET_EVENT ||
> cmd == FE_DISEQC_RECV_SLAVE_REPLY))
>
> -

Acked-by: Manu Abraham <manu@xxxxxxxxxxx>
-
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