[PATCH AUTOSEL 4.4 10/38] drm: panel: simple: add missing platform_driver_unregister() in panel_simple_init

From: Sasha Levin
Date: Tue Dec 22 2020 - 21:29:14 EST


From: Qinglang Miao <miaoqinglang@xxxxxxxxxx>

[ 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@xxxxxxxxxx>
Signed-off-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20201031011856.137307-1-miaoqinglang@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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