[PATCH 5.14 139/334] drm: rcar-du: Dont put reference to drm_device in rcar_du_remove()

Greg Kroah-Hartman
2021-09-13T14:36:19Z

From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

[ Upstream commit c29b6b0b126e9ee69a5d6339475e831a149295bd ]

The reference to the drm_device that was acquired by
devm_drm_dev_alloc() is released automatically by the devres
infrastructure. It must not be released manually, as that causes a
reference underflow..

Fixes: ea6aae151887 ("drm: rcar-du: Embed drm_device in rcar_du_device")
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/rcar-du/rcar_du_drv.c | 2 --
1 file changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
index bfbff90588cb..c22551c2facb 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
@@ -556,8 +556,6 @@ static int rcar_du_remove(struct platform_device *pdev)

drm_kms_helper_poll_fini(ddev);

- drm_dev_put(ddev);
-
return 0;
}

--
2.30.2