From: Qinglang Miao <miaoqingl...@huawei.com>

[ Upstream commit f2e66f212a9de04afc2caa5ec79057c0ac75c728 ]

Add the missing platform_driver_unregister() before return
from panel_simple_init in the error handling case when failed
to register panel_simple_dsi_driver with CONFIG_DRM_MIPI_DSI
enabled.

Signed-off-by: Qinglang Miao <miaoqingl...@huawei.com>
Signed-off-by: Sam Ravnborg <s...@ravnborg.org>
Link: 
https://patchwork.freedesktop.org/patch/msgid/20201031011856.137307-1-miaoqingl...@huawei.com
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 drivers/gpu/drm/panel/panel-simple.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/panel/panel-simple.c 
b/drivers/gpu/drm/panel/panel-simple.c
index 64b23bdebd1d1..7740772e4d575 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -1435,8 +1435,10 @@ static int __init panel_simple_init(void)
 
        if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) {
                err = mipi_dsi_driver_register(&panel_simple_dsi_driver);
-               if (err < 0)
+               if (err < 0) {
+                       
platform_driver_unregister(&panel_simple_platform_driver);
                        return err;
+               }
        }
 
        return 0;
-- 
2.27.0

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