# Re: FIX ME locking is implemented?

- From: Kalle Valo \<hidden\>
- Date: 2014-11-22 14:41:16 
- List: netdev
- Page: https://ratatoskr.run/netdev/2014/11/4380261
- Thread: https://ratatoskr.run/linux-wireless/2014/11/4380261/t.md

```text
nick [ref] writes:

> I am wondering why the fix me in the code below still exists as this
> code is clearly being locked properly with a spin lock on the lock
> related to the created linked list in this code.

It would be nice to mention what driver and file you are referring to.
So this is from ath6kl_tx_queue_full() in
drivers/net/wireless/ath/ath6kl/txrx.c.

> /* FIXME: Locking */
> spin_lock_bh(&ar->list_lock);
> list_for_each_entry(vif, &ar->vif_list, list) {
> 	if (vif->nw_type == ADHOC_NETWORK ||
>  			action != HTC_SEND_FULL_DROP) {
>                         spin_unlock_bh(&ar->list_lock);
>
>                          set_bit(NETQ_STOPPED, &vif->flags);
>                          netif_stop_queue(vif->ndev);
>
>                          return action;
>               }
>         }
>         spin_unlock_bh(&ar->list_lock);

Most probably someone just forgot to update the comment, patches welcome :)

-- 
Kalle Valo
```