linux-kernel - RE: [PATCH] net: ethernet: chelsio: cxgb4: t4_hw.c: Cleaning up uninitialized variables

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Message-ID: <CBA48B605613B640864883107238931C13AC20@nice.asicdesigners.com>
Date:	Sun, 1 Jun 2014 19:11:24 +0000
From:	Dimitrios Michailidis <dm@...lsio.com>
To:	Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] net: ethernet: chelsio: cxgb4: t4_hw.c:  Cleaning up
 uninitialized variables

Rickard Strandqvist wrote:
> There is a risk that the variable will be used without being initialized.

There isn't actual risk here, this variable is not used uninitialized AFAICS.

> This was largely found by using a static code analysis program called cppcheck.

It seems this is a false inference by the tool.  I think the preferred method to suppress false tool warnings is to use uninitialized_var.
 
> Signed-off-by: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
> ---
>  drivers/net/ethernet/chelsio/cxgb4/t4_hw.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
> b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
> index bba6768..326c005 100644
> --- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
> +++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
> @@ -571,7 +571,7 @@ int t4_seeprom_wp(struct adapter *adapter, bool
> enable)
>   */
>  int get_vpd_params(struct adapter *adapter, struct vpd_params *p)
>  {
> -	u32 cclk_param, cclk_val;
> +	u32 cclk_param, cclk_val = 0;
>  	int i, ret, addr;
>  	int ec, sn, pn;
>  	u8 *vpd, csum;
> --
> 1.7.10.4

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