[PATCH] mailbox: mtk-cmdq: Add unregister mailbox controller in cmdq_remove()

[Jason-JH . Lin]

Add unregister mailbox controller in cmdq_remove to fix cmdq unbind
WARN_ON message from pm_runtime_get_sync() in cmdq_mbox_shutdown().

Fixes: 623a6143a845 ("mailbox: mediatek: Add Mediatek CMDQ driver")
Signed-off-by: Jason-JH.Lin <jason-jh.lin@xxxxxxxxxxxx>
---
 drivers/mailbox/mtk-cmdq-mailbox.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/mailbox/mtk-cmdq-mailbox.c b/drivers/mailbox/mtk-cmdq-mailbox.c
index 4aa394e91109..1399e18a39a4 100644
--- a/drivers/mailbox/mtk-cmdq-mailbox.c
+++ b/drivers/mailbox/mtk-cmdq-mailbox.c
@@ -371,6 +371,8 @@ static void cmdq_remove(struct platform_device *pdev)
 {
 	struct cmdq *cmdq = platform_get_drvdata(pdev);
 
+	devm_mbox_controller_unregister(&pdev->dev, &cmdq->mbox);
+
 	if (cmdq->pdata->sw_ddr_en)
 		cmdq_sw_ddr_enable(cmdq, false);
 
-- 
2.18.0