drm/nouveau: fix mtrr cleanup path

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --git a/drivers/gpu/drm/nouveau/nouveau_mem.c b/drivers/gpu/drm/nouveau/nouveau_mem.c
index 5f8f95d..5c48b1e 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_mem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_mem.c
@@ -253,7 +253,7 @@ nouveau_mem_close(struct drm_device *dev)
                drm_mtrr_del(dev_priv->fb_mtrr,
                             pci_resource_start(dev->pdev, 1),
                             pci_resource_len(dev->pdev, 1), DRM_MTRR_WC);
-               dev_priv->fb_mtrr = 0;
+               dev_priv->fb_mtrr = -1;
        }
 }