[PATCH AUTOSEL 4.19 16/87] drm: panel: simple: add missing platform_driver_unregister() in panel_simple_init

[Sasha Levin]

From: Qinglang Miao <miaoqinglang at 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 <miaoqinglang at huawei.com>
Signed-off-by: Sam Ravnborg <sam at ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20201031011856.137307-1-miaoqinglang@huawei.com
Signed-off-by: Sasha Levin <sashal at 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 8814aa38c5e7b..eead8f075c94b 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -2878,8 +2878,10 @@ 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