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Date:   Mon,  8 Jul 2019 17:13:02 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Hsin-Yi Wang <hsinyi@...omium.org>,
        CK Hu <ck.hu@...iatek.com>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.9 069/102] drm/mediatek: fix unbind functions

[ Upstream commit 8fd7a37b191f93737f6280a9b5de65f98acc12c9 ]

detatch panel in mtk_dsi_destroy_conn_enc(), since .bind will try to
attach it again.

Fixes: 2e54c14e310f ("drm/mediatek: Add DSI sub driver")
Signed-off-by: Hsin-Yi Wang <hsinyi@...omium.org>
Signed-off-by: CK Hu <ck.hu@...iatek.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/mediatek/mtk_dsi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
index eaa5a2240c0c..bdbf358697cd 100644
--- a/drivers/gpu/drm/mediatek/mtk_dsi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
@@ -720,6 +720,8 @@ static void mtk_dsi_destroy_conn_enc(struct mtk_dsi *dsi)
 	/* Skip connector cleanup if creation was delegated to the bridge */
 	if (dsi->conn.dev)
 		drm_connector_cleanup(&dsi->conn);
+	if (dsi->panel)
+		drm_panel_detach(dsi->panel);
 }
 
 static void mtk_dsi_ddp_start(struct mtk_ddp_comp *comp)
-- 
2.20.1



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