linux-kernel - Re: [PATCH] mailbox: mtk-cmdq: Remove proprietary cmdq_task

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Date:   Mon, 13 Jun 2022 15:39:53 +0200
From:   Matthias Brugger <matthias.bgg@...il.com>
To:     Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Jassi Brar <jassisinghbrar@...il.com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH] mailbox: mtk-cmdq: Remove proprietary cmdq_task_cb



On 08/06/2022 16:40, Chun-Kuang Hu wrote:
> rx_callback is a standard mailbox callback mechanism and could cover the
> function of proprietary cmdq_task_cb, so use the standard one instead of
> the proprietary one. Client driver has changed to use standard
> rx_callback, so remove proprietary cmdq_task_cb.
> 
> Signed-off-by: Chun-Kuang Hu <chunkuang.hu@...nel.org>

Reviewed-by: Matthias Brugger <matthias.bgg@...il.com>

> ---
>   drivers/mailbox/mtk-cmdq-mailbox.c       | 11 -----------
>   include/linux/mailbox/mtk-cmdq-mailbox.h | 10 ----------
>   2 files changed, 21 deletions(-)
> 
> diff --git a/drivers/mailbox/mtk-cmdq-mailbox.c b/drivers/mailbox/mtk-cmdq-mailbox.c
> index 2578e5aaa935..9465f9081515 100644
> --- a/drivers/mailbox/mtk-cmdq-mailbox.c
> +++ b/drivers/mailbox/mtk-cmdq-mailbox.c
> @@ -192,15 +192,10 @@ static bool cmdq_thread_is_in_wfe(struct cmdq_thread *thread)
>   
>   static void cmdq_task_exec_done(struct cmdq_task *task, int sta)
>   {
> -	struct cmdq_task_cb *cb = &task->pkt->async_cb;
>   	struct cmdq_cb_data data;
>   
>   	data.sta = sta;
> -	data.data = cb->data;
>   	data.pkt = task->pkt;
> -	if (cb->cb)
> -		cb->cb(data);
> -
>   	mbox_chan_received_data(task->thread->chan, &data);
>   
>   	list_del(&task->list_entry);
> @@ -448,7 +443,6 @@ static void cmdq_mbox_shutdown(struct mbox_chan *chan)
>   static int cmdq_mbox_flush(struct mbox_chan *chan, unsigned long timeout)
>   {
>   	struct cmdq_thread *thread = (struct cmdq_thread *)chan->con_priv;
> -	struct cmdq_task_cb *cb;
>   	struct cmdq_cb_data data;
>   	struct cmdq *cmdq = dev_get_drvdata(chan->mbox->dev);
>   	struct cmdq_task *task, *tmp;
> @@ -465,13 +459,8 @@ static int cmdq_mbox_flush(struct mbox_chan *chan, unsigned long timeout)
>   
>   	list_for_each_entry_safe(task, tmp, &thread->task_busy_list,
>   				 list_entry) {
> -		cb = &task->pkt->async_cb;
>   		data.sta = -ECONNABORTED;
> -		data.data = cb->data;
>   		data.pkt = task->pkt;
> -		if (cb->cb)
> -			cb->cb(data);
> -
>   		mbox_chan_received_data(task->thread->chan, &data);
>   		list_del(&task->list_entry);
>   		kfree(task);
> diff --git a/include/linux/mailbox/mtk-cmdq-mailbox.h b/include/linux/mailbox/mtk-cmdq-mailbox.h
> index 44365aab043c..a8f0070c7aa9 100644
> --- a/include/linux/mailbox/mtk-cmdq-mailbox.h
> +++ b/include/linux/mailbox/mtk-cmdq-mailbox.h
> @@ -67,24 +67,14 @@ enum cmdq_code {
>   
>   struct cmdq_cb_data {
>   	int			sta;
> -	void			*data;
>   	struct cmdq_pkt		*pkt;
>   };
>   
> -typedef void (*cmdq_async_flush_cb)(struct cmdq_cb_data data);
> -
> -struct cmdq_task_cb {
> -	cmdq_async_flush_cb	cb;
> -	void			*data;
> -};
> -
>   struct cmdq_pkt {
>   	void			*va_base;
>   	dma_addr_t		pa_base;
>   	size_t			cmd_buf_size; /* command occupied size */
>   	size_t			buf_size; /* real buffer size */
> -	struct cmdq_task_cb	cb;
> -	struct cmdq_task_cb	async_cb;
>   	void			*cl;
>   };
>