[PATCH 5.10 114/518] drm/stm: Fix an error handling path in stm_drm_platform_probe()

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5.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>

[ Upstream commit ce7c90bfda2656418c69ba0dd8f8a7536b8928d4 ]

If drm_dev_register() fails, a call to drv_load() must be undone, as
already done in the remove function.

Fixes: b759012c5fa7 ("drm/stm: Add STM32 LTDC driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
Acked-by: Raphael Gallais-Pou <raphael.gallais-pou@xxxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20fff7f853f20a48a96db8ff186124470ec4d976.1704560028.git.christophe.jaillet@xxxxxxxxxx
Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@xxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/gpu/drm/stm/drv.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/stm/drv.c b/drivers/gpu/drm/stm/drv.c
index 411103f013e25..08c50e68cfca6 100644
--- a/drivers/gpu/drm/stm/drv.c
+++ b/drivers/gpu/drm/stm/drv.c
@@ -195,12 +195,14 @@ static int stm_drm_platform_probe(struct platform_device *pdev)
 
 	ret = drm_dev_register(ddev, 0);
 	if (ret)
-		goto err_put;
+		goto err_unload;
 
 	drm_fbdev_generic_setup(ddev, 16);
 
 	return 0;
 
+err_unload:
+	drv_unload(ddev);
 err_put:
 	drm_dev_put(ddev);
 
-- 
2.43.0







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