linux-kernel - Re: [PATCH][next] block/mq-deadline: remove redundant assignment of variable ret

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Date:   Tue, 22 Jun 2021 14:14:44 -0700
From:   Bart Van Assche <bvanassche@....org>
To:     Colin King <colin.king@...onical.com>,
        Jens Axboe <axboe@...nel.dk>, linux-block@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH][next] block/mq-deadline: remove redundant assignment of
 variable ret

On 6/22/21 9:17 AM, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> Variable ret is being assigned a value at the end of the function
> and the value is never read. The assignment is redundant and can
> be removed.
> 
> Addresses-Coverity: ("Unused value")
> Signed-off-by: Colin Ian King <colin.king@...onical.com>
> ---
>  block/mq-deadline-main.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/block/mq-deadline-main.c b/block/mq-deadline-main.c
> index 4815e536091f..e3091d922ba2 100644
> --- a/block/mq-deadline-main.c
> +++ b/block/mq-deadline-main.c
> @@ -639,7 +639,6 @@ static int dd_init_sched(struct request_queue *q, struct elevator_type *e)
>  	if (ret)
>  		goto free_stats;
>  
> -	ret = 0;
>  	q->elevator = eq;
>  	return 0;

Reviewed-by: Bart Van Assche <bvanassche@....org>