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drm/noveau: fix reference count leak in nouveau_fbcon_open

Message ID 20200614013342.122079-1-pakki001@umn.edu (mailing list archive)
State New, archived
Headers show
Series drm/noveau: fix reference count leak in nouveau_fbcon_open | expand

Commit Message

Aditya Pakki June 14, 2020, 1:33 a.m. UTC
nouveau_fbcon_open() calls calls pm_runtime_get_sync() that
increments the reference count. In case of failure, decrement the
ref count before returning the error.

Signed-off-by: Aditya Pakki <pakki001@umn.edu>
---
 drivers/gpu/drm/nouveau/nouveau_fbcon.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
index 3d11b84d4cf9..f10d28f8f132 100644
--- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c
+++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
@@ -189,8 +189,10 @@  nouveau_fbcon_open(struct fb_info *info, int user)
 	struct nouveau_fbdev *fbcon = info->par;
 	struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
 	int ret = pm_runtime_get_sync(drm->dev->dev);
-	if (ret < 0 && ret != -EACCES)
+	if (ret < 0 && ret != -EACCES) {
+		pm_runtime_put(drm->dev->dev);
 		return ret;
+	}
 	return 0;
 }