linux-kernel - Re: [PATCH] ipmi_ssif: Fix uninitialized variable issue

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Message-ID: <738f2ba2-b0db-9120-4590-eade830dde25@acm.org>
Date:   Thu, 19 Apr 2018 08:40:47 -0500
From:   Corey Minyard <minyard@....org>
To:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Corey Minyard <cminyard@...sta.com>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     openipmi-developer@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ipmi_ssif: Fix uninitialized variable issue

On 04/19/2018 08:24 AM, Gustavo A. R. Silva wrote:
> Currently, function ssif_remove returns _rv_, which is a variable that
> is never initialized.
>
> Fix this by removing variable _rv_ and return 0 instead.

This fix is in my next tree now, thanks for catching this before it got 
any further than that.

-corey

> Addresses-Coverity-ID: 1467999 ("Uninitialized scalar variable")
> Fixes: 6a0d23ed338e ("ipmi: ipmi_unregister_smi() cannot fail, have it
> return void")
> Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
> ---
>   drivers/char/ipmi/ipmi_ssif.c | 3 +--
>   1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/char/ipmi/ipmi_ssif.c b/drivers/char/ipmi/ipmi_ssif.c
> index ecabfe2..37f9ae2 100644
> --- a/drivers/char/ipmi/ipmi_ssif.c
> +++ b/drivers/char/ipmi/ipmi_ssif.c
> @@ -1227,7 +1227,6 @@ static int ssif_remove(struct i2c_client *client)
>   	struct ssif_info *ssif_info = i2c_get_clientdata(client);
>   	struct ipmi_smi *intf;
>   	struct ssif_addr_info *addr_info;
> -	int rv;
>   
>   	if (!ssif_info)
>   		return 0;
> @@ -1247,7 +1246,7 @@ static int ssif_remove(struct i2c_client *client)
>   		}
>   	}
>   
> -	return rv;
> +	return 0;
>   }
>   
>   static int do_cmd(struct i2c_client *client, int len, unsigned char *msg,