linux-kernel - Re: [PATCH][next] crypto: asymmetric_keys: remove redundant pointer secs

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Date: Fri, 19 Jan 2024 21:12:58 +0000
From: "Jarkko Sakkinen" <jarkko@...nel.org>
To: "Colin Ian King" <colin.i.king@...il.com>, "David Howells"
 <dhowells@...hat.com>, "Herbert Xu" <herbert@...dor.apana.org.au>, "David S
 . Miller" <davem@...emloft.net>, <keyrings@...r.kernel.org>,
 <linux-crypto@...r.kernel.org>
Cc: <kernel-janitors@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH][next] crypto: asymmetric_keys: remove redundant pointer
 secs

On Thu Jan 18, 2024 at 12:07 PM UTC, Colin Ian King wrote:
> The pointer secs is being assigned a value however secs is never
> read afterwards. The pointer secs is redundant and can be removed.
>
> Cleans up clang scan build warning:
> warning: Although the value stored to 'secs' is used in the enclosing
> expression, the value is never actually read from 'secs'
> [deadcode.DeadStores]
>
> Signed-off-by: Colin Ian King <colin.i.king@...il.com>
> ---
>  crypto/asymmetric_keys/verify_pefile.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/crypto/asymmetric_keys/verify_pefile.c b/crypto/asymmetric_keys/verify_pefile.c
> index f440767bd727..2863984b6700 100644
> --- a/crypto/asymmetric_keys/verify_pefile.c
> +++ b/crypto/asymmetric_keys/verify_pefile.c
> @@ -28,7 +28,7 @@ static int pefile_parse_binary(const void *pebuf, unsigned int pelen,
>  	const struct pe32plus_opt_hdr *pe64;
>  	const struct data_directory *ddir;
>  	const struct data_dirent *dde;
> -	const struct section_header *secs, *sec;
> +	const struct section_header *sec;
>  	size_t cursor, datalen = pelen;
>  
>  	kenter("");
> @@ -110,7 +110,7 @@ static int pefile_parse_binary(const void *pebuf, unsigned int pelen,
>  	ctx->n_sections = pe->sections;
>  	if (ctx->n_sections > (ctx->header_size - cursor) / sizeof(*sec))
>  		return -ELIBBAD;
> -	ctx->secs = secs = pebuf + cursor;
> +	ctx->secs = pebuf + cursor;
>  
>  	return 0;
>  }

Reviewed-by: Jarkko Sakkinen <jarkko@...nel.org>

BR, Jarkko