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drm/nouveau/drm/noveau: fix reference count leak in nouveau_fbcon_open

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[ Upstream commit bfad51c7633325b5d4b32444efe04329d53297b2 ]

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>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Aditya Pakki 2020-06-13 20:33:42 -05:00 • committed by Greg Kroah-Hartman
commit 83443512a9
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/nouveau/nouveau_fbcon.c
View file

@ -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;
}