drm/ttm: Delete an unnecessary check before the function call "ttm_tt_destroy"

The ttm_tt_destroy() function tests whether its argument is NULL
and then returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/54338f58-830c-a8b4-4554-5d4459bcd321@users.sourceforge.net

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 39386f5..4e55863 100644 (file)
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -146,9 +146,7 @@ static void ttm_bo_release_list(struct kref *list_kref)
        BUG_ON(bo->mem.mm_node != NULL);
        BUG_ON(!list_empty(&bo->lru));
        BUG_ON(!list_empty(&bo->ddestroy));
-
-       if (bo->ttm)
-               ttm_tt_destroy(bo->ttm);
+       ttm_tt_destroy(bo->ttm);
        atomic_dec(&bo->glob->bo_count);
        if (bo->resv == &bo->ttm_resv)
                reservation_object_fini(&bo->ttm_resv);