From: "Horia Geantă" <horia.geanta@nxp.com>
To: Colin King <colin.king@canonical.com>,
Aymen Sghaier <aymen.sghaier@nxp.com>,
Herbert Xu <herbert@gondor.apana.org.au>,
"David S . Miller" <davem@davemloft.net>,
"linux-crypto@vger.kernel.org" <linux-crypto@vger.kernel.org>
Cc: "kernel-janitors@vger.kernel.org"
<kernel-janitors@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] crypto: caam/qi2: remove redundant assignment to ret
Date: Thu, 18 Jun 2020 13:54:55 +0300 [thread overview]
Message-ID: <8e08adcb-ef91-124d-d093-921fc97da3af@nxp.com> (raw)
In-Reply-To: <20200611153934.928021-1-colin.king@canonical.com>
On 6/11/2020 6:39 PM, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
>
> The variable ret is being assigned a value that is never read, the
> error exit path via label 'unmap' returns -ENOMEM anyhow, so assigning
> ret with -ENOMEM is redundamt.
>
> Addresses-Coverity: ("Unused value")
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
> drivers/crypto/caam/caamalg_qi2.c | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/drivers/crypto/caam/caamalg_qi2.c b/drivers/crypto/caam/caamalg_qi2.c
> index 28669cbecf77..ef2c4e095db3 100644
> --- a/drivers/crypto/caam/caamalg_qi2.c
> +++ b/drivers/crypto/caam/caamalg_qi2.c
> @@ -4044,7 +4044,6 @@ static int ahash_finup_no_ctx(struct ahash_request *req)
> DMA_TO_DEVICE);
> if (dma_mapping_error(ctx->dev, edesc->qm_sg_dma)) {
> dev_err(ctx->dev, "unable to map S/G table\n");
> - ret = -ENOMEM;
> goto unmap;
> }
> edesc->qm_sg_bytes = qm_sg_bytes;
> @@ -4055,7 +4054,6 @@ static int ahash_finup_no_ctx(struct ahash_request *req)
> if (dma_mapping_error(ctx->dev, state->ctx_dma)) {
> dev_err(ctx->dev, "unable to map ctx\n");
> state->ctx_dma = 0;
> - ret = -ENOMEM;
> goto unmap;
> }
>
The proper fix would be updating the ahash_finup_no_ctx() function
to return the specific error code:
return ret;
instead of returning -ENOMEM for all error cases.
For example error code returned by dpaa2_caam_enqueue()
should be returned instead of -ENOMEM.
Horia
next prev parent reply other threads:[~2020-06-18 10:55 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-11 15:39 [PATCH] crypto: caam/qi2: remove redundant assignment to ret Colin King
2020-06-18 7:58 ` Herbert Xu
2020-06-18 10:40 ` Horia Geantă
2020-06-18 10:44 ` Herbert Xu
2020-06-18 10:54 ` Horia Geantă [this message]
2020-06-18 11:00 ` Herbert Xu
2020-06-18 13:16 ` Horia Geantă
2020-06-19 13:22 ` [PATCH] crypto: caam/qi2 - fix return code in ahash_finup_no_ctx() Horia Geantă
2020-06-26 6:08 ` Herbert Xu
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