[PATCH 2/3] mailbox: mtk-cmdq: Use mailbox rx_callback

[Chun-Kuang Hu]

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. But the client driver has already used cmdq_task_cb,
so keep cmdq_task_cb until all client driver use rx_callback instead of
cmdq_task_cb.

Cc: Jassi Brar <jassisinghb...@gmail.com>
Cc: Matthias Brugger <matthias....@gmail.com>
Cc: Houlong Wei <houlong....@mediatek.com>
Cc: Bibby Hsieh <bibby.hs...@mediatek.com>
Cc: Dennis YC Hsieh <dennis-yc.hs...@mediatek.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux-media...@lists.infradead.org
Signed-off-by: Chun-Kuang Hu <chunkuang...@kernel.org>
---
 drivers/mailbox/mtk-cmdq-mailbox.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/drivers/mailbox/mtk-cmdq-mailbox.c 
b/drivers/mailbox/mtk-cmdq-mailbox.c
index 3d37c1cd40f1..ef59e2234f22 100644
--- a/drivers/mailbox/mtk-cmdq-mailbox.c
+++ b/drivers/mailbox/mtk-cmdq-mailbox.c
@@ -188,7 +188,10 @@ 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;
-       cb->cb(data);
+       if (cb->cb)
+               cb->cb(data);
+
+       mbox_chan_received_data(task->thread->chan, &data);
 
        list_del(&task->list_entry);
 }
@@ -451,12 +454,13 @@ 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) {
+               data.sta = -ECONNABORTED;
+               data.data = cb->data;
                cb = &task->pkt->async_cb;
-               if (cb->cb) {
-                       data.sta = -ECONNABORTED;
-                       data.data = cb->data;
+               if (cb->cb)
                        cb->cb(data);
-               }
+
+               mbox_chan_received_data(task->thread->chan, &data);
                list_del(&task->list_entry);
                kfree(task);
        }
-- 
2.17.1