drm: Assert that BO is locked in drm_gem_vram_{pin, unpin}_locked() (9977e5b4) · Commits · 戴 / test

We may not call drm_gem_vram_{pin,unpin}_locked() with an unlocked BO. Now test for this. Signed-off-by:

drivers/gpu/drm/drm_gem_vram_helper.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -284,6 +284,8 @@ int drm_gem_vram_pin_locked(struct drm_gem_vram_object *gbo,
		int i, ret;
		struct ttm_operation_ctx ctx = { false, false };

		lockdep_assert_held(&gbo->bo.resv->lock.base);

		if (gbo->pin_count) {
		++gbo->pin_count;
		return 0;
		@@ -361,6 +363,8 @@ int drm_gem_vram_unpin_locked(struct drm_gem_vram_object *gbo)
		int i, ret;
		struct ttm_operation_ctx ctx = { false, false };

		lockdep_assert_held(&gbo->bo.resv->lock.base);

		if (WARN_ON_ONCE(!gbo->pin_count))
		return 0;