[PATCH] staging: r8723au: Add missing initialization of change_inx in sort algorithm
Larry Finger
Larry.Finger at lwfinger.net
Thu Apr 10 18:01:24 UTC 2014
On 04/10/2014 12:46 PM, Geert Uytterhoeven wrote:
> drivers/staging/rtl8723au/core/rtw_wlan_util.c: In function ‘WMMOnAssocRsp23a’:
> drivers/staging/rtl8723au/core/rtw_wlan_util.c:684: warning: ‘change_inx’ may be used uninitialized in this function
>
> Depending on the uninitialized data on the stack, the array may not be
> sorted correctly.
>
> Signed-off-by: Geert Uytterhoeven <geert at linux-m68k.org>
> ---
Acked-by: Larry Finger <Larry.Finger at lwfinger.net>
Geert,
Thanks for this. I wonder why my gcc on x86_64 did not flag this problem.
Larry
> drivers/staging/rtl8723au/core/rtw_wlan_util.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/staging/rtl8723au/core/rtw_wlan_util.c b/drivers/staging/rtl8723au/core/rtw_wlan_util.c
> index 0dfcfbce3b52..a4361bb93865 100644
> --- a/drivers/staging/rtl8723au/core/rtw_wlan_util.c
> +++ b/drivers/staging/rtl8723au/core/rtw_wlan_util.c
> @@ -681,7 +681,7 @@ void WMMOnAssocRsp23a(struct rtw_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++) {
>
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