Re: [PATCH 5/6] staging: rtl8188eu: use safe iterator in rtw_sta_flush

Guenter Roeck
2021-05-16T19:24:55Z

On Sun, May 16, 2021 at 06:06:12PM +0200, Martin Kaiser wrote:
> Use list_for_each_safe, we may delete list items while iterating over
> the list.
>
> Fixes: 23017c8842d2 ("staging: rtl8188eu: Use list iterators and helpers")
> Signed-off-by: Martin Kaiser <martin@kaiser.cx>

Reviewed-by: Guenter Roeck <linux@roeck-us.net>

> ---
> compile-tested only
>
> drivers/staging/rtl8188eu/core/rtw_ap.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/staging/rtl8188eu/core/rtw_ap.c b/drivers/staging/rtl8188eu/core/rtw_ap.c
> index 601974df4114..8ffafc7eb316 100644
> --- a/drivers/staging/rtl8188eu/core/rtw_ap.c
> +++ b/drivers/staging/rtl8188eu/core/rtw_ap.c
> @@ -1579,7 +1579,7 @@ u8 ap_free_sta(struct adapter *padapter, struct sta_info *psta,
>
> int rtw_sta_flush(struct adapter *padapter)
> {
> - struct list_head *phead, *plist;
> + struct list_head *phead, *plist, *temp;
> struct sta_info *psta = NULL;
> struct sta_priv *pstapriv = &padapter->stapriv;
> struct mlme_ext_priv *pmlmeext = &padapter->mlmeextpriv;
> @@ -1594,7 +1594,7 @@ int rtw_sta_flush(struct adapter *padapter)
> spin_lock_bh(&pstapriv->asoc_list_lock);
> phead = &pstapriv->asoc_list;
> /* free sta asoc_queue */
> - list_for_each(plist, phead) {
> + list_for_each_safe(plist, temp, phead) {
> psta = list_entry(plist, struct sta_info, asoc_list);
>
> list_del_init(&psta->asoc_list);
> --
> 2.20.1
>