RE: [PATCH v7 4/6] wifi: rtw88: sdio: track free TX pages and OQT credits for RTL8723BS

[Ping-Ke Shih <pkshih@realtek.com>]

Luka Gejak <luka.gejak@linux.dev> wrote:
> Hi Ping-Ke,
> 
> On August 25, 2026 8:12:58 AM GMT+02:00, Ping-Ke Shih <pkshih@realtek.com> wrote:
> > guard(mutex)(&rtwsdio->tx_credit_lock);
> 
> The lock is only taken for this chip, and guard() is unconditional, so I
> split the locked region into its own function instead of branching around
> the lock:
> 
>         if (!rtw_is_8723bs(rtwdev)) {
>                 txsize = sdio_align_size(rtwsdio->sdio_func, skb->len);
> 
>                 ret = rtw_sdio_check_free_txpg(rtwdev, queue, txsize);
>                 if (ret)
>                         return ret;
> 
>                 return rtw_sdio_write_to_port(rtwdev, skb, queue, txaddr,
>                                               txsize);
>         }
>         ...
>         guard(mutex)(&rtwsdio->tx_credit_lock);
> 
>         return rtw_sdio_8723bs_write_port(rtwdev, skb, queue, txaddr, txsize,
>                                           write_size);

I meant

    if (rtw_is_8723bs(rtwdev))
        guard(mutex)(&rtwsdio->tx_credit_lock);

Doesn't it work?