mailbox: mtk-cmdq: Add struct cmdq_pkt in struct cmdq_cb_data

Current client use 'struct cmdq_pkt' as callback data, so
change 'void *data' to 'struct cmdq_pkt *pkt'. Keep data
until client use pkt instead of data.

Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Reviewed-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>

drivers/mailbox/mtk-cmdq-mailbox.c

@@ -188,6 +188,7 @@ static void cmdq_task_exec_done(struct cmdq_task *task, int sta)
 	WARN_ON(cb->cb == (cmdq_async_flush_cb)NULL);
 	data.sta = sta;
 	data.data = cb->data;
+	data.pkt = task->pkt;
 	if (cb->cb)
 		cb->cb(data);
 
@@ -456,6 +457,7 @@ static int cmdq_mbox_flush(struct mbox_chan *chan, unsigned long timeout)
 				 list_entry) {
 		data.sta = -ECONNABORTED;
 		data.data = cb->data;
+		data.pkt = task->pkt;
 		cb = &task->pkt->async_cb;
 		if (cb->cb)
 			cb->cb(data);

include/linux/mailbox/mtk-cmdq-mailbox.h

@@ -68,6 +68,7 @@ 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);