linux-kernel - Re: [PATCH 1/2] Fix static checker warning

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Date:   Wed, 19 Sep 2018 13:40:53 +0000
From:   Gary R Hook <ghook@....com>
To:     "Natarajan, Janakarajan" <Janakarajan.Natarajan@....com>,
        "linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     "Lendacky, Thomas" <Thomas.Lendacky@....com>,
        "Hook, Gary" <Gary.Hook@....com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S . Miller" <davem@...emloft.net>,
        "Singh, Brijesh" <brijesh.singh@....com>,
        Dan Carpenter <Dan.Carpenter@...cle.com>
Subject: Re: [PATCH 1/2] Fix static checker warning

On 09/14/2018 05:32 PM, Janakarajan Natarajan wrote:
> Under certain configuration SEV functions can be defined as no-op.
> In such a case error can be uninitialized.
> 
> Initialize the variable to 0.
> 
> Cc: Dan Carpenter <Dan.Carpenter@...cle.com>
> Reported-by: Dan Carpenter <Dan.Carpenter@...cle.com>
> Signed-off-by: Janakarajan Natarajan <Janakarajan.Natarajan@....com>

Acked-by: Gary R Hook <gary.hook@....com>

> ---
>   drivers/crypto/ccp/psp-dev.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/crypto/ccp/psp-dev.c b/drivers/crypto/ccp/psp-dev.c
> index 72790d8..f541e60 100644
> --- a/drivers/crypto/ccp/psp-dev.c
> +++ b/drivers/crypto/ccp/psp-dev.c
> @@ -423,7 +423,7 @@ EXPORT_SYMBOL_GPL(psp_copy_user_blob);
>   static int sev_get_api_version(void)
>   {
>   	struct sev_user_data_status *status;
> -	int error, ret;
> +	int error = 0, ret;
>   
>   	status = &psp_master->status_cmd_buf;
>   	ret = sev_platform_status(status, &error);
>