drm/nouveau: fix reference count leak in nv50_disp_atomic_commit

[ Upstream commit a2cdf39536b0d21fb06113f5e16692513d7bcb9c ]

nv50_disp_atomic_commit() calls calls pm_runtime_get_sync and in turn
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>

diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c
index d735ea7e2d886869263aca2381046d1fe58b1aab..419a02260bfa75a8df8b0f8c3b7cda80d2b10e01 100644 (file)
--- a/drivers/gpu/drm/nouveau/dispnv50/disp.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c
@@ -2032,8 +2032,10 @@ nv50_disp_atomic_commit(struct drm_device *dev,
        int ret, i;
 
        ret = pm_runtime_get_sync(dev->dev);
-       if (ret < 0 && ret != -EACCES)
+       if (ret < 0 && ret != -EACCES) {
+               pm_runtime_put_autosuspend(dev->dev);
                return ret;
+       }
 
        ret = drm_atomic_helper_setup_commit(state, nonblock);
        if (ret)