linux-kernel - Re: [PATCH][next] block: blk-crypto-fallback: remove redundant initialization of variable err

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Date:   Tue, 26 May 2020 16:20:50 -0700
From:   Eric Biggers <ebiggers@...nel.org>
To:     Colin King <colin.king@...onical.com>
Cc:     Jens Axboe <axboe@...nel.dk>, linux-block@...r.kernel.org,
        kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org,
        Satya Tangirala <satyat@...gle.com>
Subject: Re: [PATCH][next] block: blk-crypto-fallback: remove redundant
 initialization of variable err

On Tue, May 26, 2020 at 11:49:02PM +0100, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> The variable err is being initialized with a value that is never read
> and it is being updated later with a new value.  The initialization is
> redundant and can be removed.
> 
> Addresses-Coverity: ("Unused value")
> Signed-off-by: Colin Ian King <colin.king@...onical.com>
> ---
>  block/blk-crypto-fallback.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/block/blk-crypto-fallback.c b/block/blk-crypto-fallback.c
> index 74ab137ae3ba..6e49688a2d80 100644
> --- a/block/blk-crypto-fallback.c
> +++ b/block/blk-crypto-fallback.c
> @@ -529,7 +529,7 @@ static bool blk_crypto_fallback_inited;
>  static int blk_crypto_fallback_init(void)
>  {
>  	int i;
> -	int err = -ENOMEM;
> +	int err;
>  
>  	if (blk_crypto_fallback_inited)
>  		return 0;

Looks good, you can add:

	Reviewed-by: Eric Biggers <ebiggers@...gle.com>

- Eric