linux-kernel - Re: [PATCH] staging: r8188eu: Fix uninitialized variable change

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Message-ID: <5229E9D2.9060000@lwfinger.net>
Date:	Fri, 06 Sep 2013 09:42:26 -0500
From:	Larry Finger <Larry.Finger@...inger.net>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
CC:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: r8188eu: Fix uninitialized variable change_inx

On 09/06/2013 07:45 AM, Geert Uytterhoeven wrote:
> drivers/staging/rtl8188eu/core/rtw_wlan_util.c: In function ‘WMMOnAssocRsp’:
> drivers/staging/rtl8188eu/core/rtw_wlan_util.c:634: warning: ‘change_inx’ may be used uninitialized in this function
>
> And the compiler is right: change_inx should be initialized to false.
>
> Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
> ---
>   drivers/staging/rtl8188eu/core/rtw_wlan_util.c |    2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/staging/rtl8188eu/core/rtw_wlan_util.c b/drivers/staging/rtl8188eu/core/rtw_wlan_util.c
> index 013ea48..8018edd 100644
> --- a/drivers/staging/rtl8188eu/core/rtw_wlan_util.c
> +++ b/drivers/staging/rtl8188eu/core/rtw_wlan_util.c
> @@ -631,7 +631,7 @@ void WMMOnAssocRsp(struct adapter *padapter)
>   	inx[0] = 0; inx[1] = 1; inx[2] = 2; inx[3] = 3;
>
>   	if (pregpriv->wifi_spec == 1) {
> -		u32	j, tmp, change_inx;
> +		u32	j, tmp, change_inx = false;
>
>   		/* entry indx: 0->vo, 1->vi, 2->be, 3->bk. */
>   		for (i = 0; i < 4; i++) {
>

Acked-by: Larry Finger <Larry.Finger@...inger.net>

This warning has not shown up on my x86_64 system with gcc 4.7.2. What 
architecture and gcc version were you using?

Thanks,

Larry

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