netdev - Re: rtlwifi: use tasklet_setup to initialize rx_work

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Date:   Mon,  8 Feb 2021 10:38:32 +0000 (UTC)
From:   Kalle Valo <kvalo@...eaurora.org>
To:     Emil Renner Berthing <kernel@...il.dk>
Cc:     linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        Emil Renner Berthing <kernel@...il.dk>,
        Ping-Ke Shih <pkshih@...ltek.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Allen Pais <allen.lkml@...il.com>,
        Romain Perier <romain.perier@...il.com>,
        linux-kernel@...r.kernel.org
Subject: Re: rtlwifi: use tasklet_setup to initialize rx_work_tasklet

Emil Renner Berthing <kernel@...il.dk> wrote:

> In commit d3ccc14dfe95 most of the tasklets in this driver was
> updated to the new API. However for the rx_work_tasklet only the
> type of the callback was changed from
>   void _rtl_rx_work(unsigned long data)
> to
>   void _rtl_rx_work(struct tasklet_struct *t).
> 
> The initialization of rx_work_tasklet was still open-coded and the
> function pointer just cast into the old type, and hence nothing sets
> rx_work_tasklet.use_callback = true and the callback was still called as
> 
>   t->func(t->data);
> 
> with uninitialized/zero t->data.
> 
> Commit 6b8c7574a5f8 changed the casting of _rtl_rx_work a bit and
> initialized t->data to a pointer to the tasklet cast to an unsigned
> long.
> 
> This way calling t->func(t->data) might actually work through all the
> casting, but it still doesn't update the code to use the new tasklet
> API.
> 
> Let's use the new tasklet_setup to initialize rx_work_tasklet properly
> and set rx_work_tasklet.use_callback = true so that the callback is
> called as
> 
>   t->callback(t);
> 
> without all the casting.
> 
> Signed-off-by: Emil Renner Berthing <kernel@...il.dk>
> Acked-by: Willem de Bruijn <willemb@...gle.com>

Patch applied to wireless-drivers-next.git, thanks.

ca04217add8e rtlwifi: use tasklet_setup to initialize rx_work_tasklet

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20210126171550.3066-1-kernel@esmil.dk/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches