From 6510ce3ff546ee3b3df13cd5574d2e8f68f9e546 Mon Sep 17 00:00:00 2001
From: "jason-jh.lin" <jason-jh.lin@mediatek.com>
Date: Thu, 28 Oct 2021 18:19:11 +0800
Subject: drm/mediatek: Add mbox_free_channel in mtk_drm_crtc_destroy
Git-commit: 593b655f05238536d476b2f872b8a1488700fa18
Patch-mainline: v5.17-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225

Add mbox_free_channel in mtk_drm_crtc_destroy.

Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index ffa54b416ca7..b48b76b796a6 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -156,6 +156,11 @@ static void mtk_drm_crtc_destroy(struct drm_crtc *crtc)
 	mtk_mutex_put(mtk_crtc->mutex);
 #if IS_REACHABLE(CONFIG_MTK_CMDQ)
 	mtk_drm_cmdq_pkt_destroy(&mtk_crtc->cmdq_handle);
+
+	if (mtk_crtc->cmdq_client.chan) {
+		mbox_free_channel(mtk_crtc->cmdq_client.chan);
+		mtk_crtc->cmdq_client.chan = NULL;
+	}
 #endif
 	drm_crtc_cleanup(crtc);
 }
-- 
2.38.1