diff mbox series

[4.19,172/245] drm/nouveau: fix runtime pm imbalance on error

Message ID 20200929105955.348976739@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg KH Sept. 29, 2020, 11 a.m. UTC 
From: Dinghao Liu <dinghao.liu@zju.edu.cn>

[ Upstream commit d7372dfb3f7f1602b87e0663e8b8646da23ebca7 ]

pm_runtime_get_sync() increments the runtime PM usage counter even
the call returns an error code. Thus a pairing decrement is needed
on the error handling path to keep the counter balanced.

Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/nouveau/nouveau_gem.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c
index 791f970714ed6..a98fccb0d32f9 100644
--- a/drivers/gpu/drm/nouveau/nouveau_gem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_gem.c
@@ -82,8 +82,10 @@  nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
 		return ret;
 
 	ret = pm_runtime_get_sync(dev);
-	if (ret < 0 && ret != -EACCES)
+	if (ret < 0 && ret != -EACCES) {
+		pm_runtime_put_autosuspend(dev);
 		goto out;
+	}
 
 	ret = nouveau_vma_new(nvbo, &cli->vmm, &vma);
 	pm_runtime_mark_last_busy(dev);