drm/nouveau: Don't take dev->struct_mutex in ttm_fini

This is only called in driver load/unload paths, no need to grab any
locks at all. Also, ttm takes care of itself anyway.

Cc: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>

diff --git a/drivers/gpu/drm/nouveau/nouveau_ttm.c b/drivers/gpu/drm/nouveau/nouveau_ttm.c
index 18f4497..1f8ec0e 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_ttm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_ttm.c
@@ -424,10 +424,8 @@ nouveau_ttm_init(struct nouveau_drm *drm)
 void
 nouveau_ttm_fini(struct nouveau_drm *drm)
 {
-       mutex_lock(&drm->dev->struct_mutex);
        ttm_bo_clean_mm(&drm->ttm.bdev, TTM_PL_VRAM);
        ttm_bo_clean_mm(&drm->ttm.bdev, TTM_PL_TT);
-       mutex_unlock(&drm->dev->struct_mutex);
 
        ttm_bo_device_release(&drm->ttm.bdev);