linux-kernel - Re: [PATCH] media: dvbdev: remove redundant initialization of variable ret

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Date:   Mon, 25 Apr 2022 14:57:43 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Colin Ian King <colin.i.king@...il.com>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] media: dvbdev: remove redundant initialization of
 variable ret

On Sun, Apr 24, 2022 at 04:47:20PM +0100, Colin Ian King wrote:
> Variable ret is being ininitialized with a value that is never read.
> The ininitializtion is redundant and can be removed. Move the variable
> to the scope it is required.
> 
> Signed-off-by: Colin Ian King <colin.i.king@...il.com>
> ---
>  drivers/media/dvb-core/dvbdev.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c
> index 675d877a67b2..d5a142ef9876 100644
> --- a/drivers/media/dvb-core/dvbdev.c
> +++ b/drivers/media/dvb-core/dvbdev.c
> @@ -243,7 +243,7 @@ static void dvb_media_device_free(struct dvb_device *dvbdev)
>  static int dvb_create_tsout_entity(struct dvb_device *dvbdev,
>  				    const char *name, int npads)
>  {
> -	int i, ret = 0;
> +	int i;

It's better when "ret" has function scope.  Otherwise in the future
when someone adds a "ret" you're going to end up with two "ret"
variables.

regards,
dan carpenter