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* [PATCH] drm/panel: add missing platform_driver_unregister() on error path
@ 2020-11-11  6:44 Yang Yingliang
  2020-11-11  7:20 ` Sam Ravnborg
  0 siblings, 1 reply; 2+ messages in thread
From: Yang Yingliang @ 2020-11-11  6:44 UTC (permalink / raw)
  To: dri-devel, linux-kernel; +Cc: thierry.reding, sam, yangyingliang

If mipi_dsi_driver_register() failed, platform_driver_unregister()
need be called.

Fixes: 210fcd9d9cf1 ("drm/panel: Add support for Panasonic VVX10F004B0")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
---
 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 2be358fb46f7..2966ac13c538 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -4644,8 +4644,10 @@ 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;
-- 
2.25.1


^ permalink raw reply related	[flat|nested] 2+ messages in thread

* Re: [PATCH] drm/panel: add missing platform_driver_unregister() on error path
  2020-11-11  6:44 [PATCH] drm/panel: add missing platform_driver_unregister() on error path Yang Yingliang
@ 2020-11-11  7:20 ` Sam Ravnborg
  0 siblings, 0 replies; 2+ messages in thread
From: Sam Ravnborg @ 2020-11-11  7:20 UTC (permalink / raw)
  To: Yang Yingliang; +Cc: dri-devel, linux-kernel, thierry.reding

Hi Yang,

On Wed, Nov 11, 2020 at 02:44:25PM +0800, Yang Yingliang wrote:
> If mipi_dsi_driver_register() failed, platform_driver_unregister()
> need be called.
> 
> Fixes: 210fcd9d9cf1 ("drm/panel: Add support for Panasonic VVX10F004B0")
> Reported-by: Hulk Robot <hulkci@huawei.com>
> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>

Thanks for the patch but this is already fixed in drm-misx-next.
See:

    commit f2e66f212a9de04afc2caa5ec79057c0ac75c728
    drm: panel: simple: add missing platform_driver_unregister() in panel_simple_init

	Sam

^ permalink raw reply	[flat|nested] 2+ messages in thread

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