linux-kernel - Re: [PATCH v2] crypto: cleanup warning in qm_get_qos

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Message-ID: <Yc7q8yhSp+aRy1Xg@gondor.apana.org.au>
Date:   Fri, 31 Dec 2021 22:35:15 +1100
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     trix@...hat.com
Cc:     wangzhou1@...ilicon.com, davem@...emloft.net, nathan@...nel.org,
        ndesaulniers@...gle.com, yekai13@...wei.com,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        llvm@...ts.linux.dev
Subject: Re: [PATCH v2] crypto: cleanup warning in qm_get_qos_value()

On Wed, Dec 22, 2021 at 09:29:23AM -0800, trix@...hat.com wrote:
> From: Tom Rix <trix@...hat.com>
> 
> Building with clang static analysis returns this warning:
> 
> qm.c:4382:11: warning: The left operand of '==' is a garbage value
>         if (*val == 0 || *val > QM_QOS_MAX_VAL || ret) {
>             ~~~~ ^
> 
> The call to qm_qos_value_init() can return an error without setting
> *val.  So check ret before checking *val.
> 
> Fixes: 72b010dc33b9 ("crypto: hisilicon/qm - supports writing QoS int the host")
> Signed-off-by: Tom Rix <trix@...hat.com>
> ---
> v2: Add Fixes: line
> 
>  drivers/crypto/hisilicon/qm.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Patch applied.  Thanks.
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt