mailbox: mtk-cmdq: Remove cmdq_cb_status

cmdq_cb_status is an error status. Use the standard error number
instead of cmdq_cb_status to prevent status duplication.

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>

Author: Chun-Kuang Hu

drivers/mailbox/mtk-cmdq-mailbox.c

@@ -180,7 +180,7 @@ static bool cmdq_thread_is_in_wfe(struct cmdq_thread *thread)
 	return readl(thread->base + CMDQ_THR_WAIT_TOKEN) & CMDQ_THR_IS_WAITING;
 }
 
-static void cmdq_task_exec_done(struct cmdq_task *task, enum cmdq_cb_status sta)
+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;
@@ -244,10 +244,10 @@ static void cmdq_thread_irq_handler(struct cmdq *cmdq,
 			curr_task = task;
 
 		if (!curr_task || curr_pa == task_end_pa - CMDQ_INST_SIZE) {
-			cmdq_task_exec_done(task, CMDQ_CB_NORMAL);
+			cmdq_task_exec_done(task, 0);
 			kfree(task);
 		} else if (err) {
-			cmdq_task_exec_done(task, CMDQ_CB_ERROR);
+			cmdq_task_exec_done(task, -ENOEXEC);
 			cmdq_task_handle_error(curr_task);
 			kfree(task);
 		}
@@ -415,7 +415,7 @@ static void cmdq_mbox_shutdown(struct mbox_chan *chan)
 
 	list_for_each_entry_safe(task, tmp, &thread->task_busy_list,
 				 list_entry) {
-		cmdq_task_exec_done(task, CMDQ_CB_ERROR);
+		cmdq_task_exec_done(task, -ECONNABORTED);
 		kfree(task);
 	}
 
@@ -453,7 +453,7 @@ static int cmdq_mbox_flush(struct mbox_chan *chan, unsigned long timeout)
 				 list_entry) {
 		cb = &task->pkt->async_cb;
 		if (cb->cb) {
-			data.sta = CMDQ_CB_ERROR;
+			data.sta = -ECONNABORTED;
 			data.data = cb->data;
 			cb->cb(data);
 		}

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

@@ -65,13 +65,8 @@ enum cmdq_code {
 	CMDQ_CODE_LOGIC = 0xa0,
 };
 
-enum cmdq_cb_status {
-	CMDQ_CB_NORMAL = 0,
-	CMDQ_CB_ERROR
-};
-
 struct cmdq_cb_data {
-	enum cmdq_cb_status	sta;
+	int			sta;
 	void			*data;
 };