drm/radeon: get rid of ttm_bo_is_reserved usage

Try to use lockdep_assert_held or other alternatives where possible.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
index d850dc6..0219d26 100644
--- a/drivers/gpu/drm/radeon/radeon_object.c
+++ b/drivers/gpu/drm/radeon/radeon_object.c
@@ -400,7 +400,7 @@
 	int steal;
 	int i;
 
-	BUG_ON(!radeon_bo_is_reserved(bo));
+	lockdep_assert_held(&bo->tbo.resv->lock.base);
 
 	if (!bo->tiling_flags)
 		return 0;
@@ -526,7 +526,8 @@
 				uint32_t *tiling_flags,
 				uint32_t *pitch)
 {
-	BUG_ON(!radeon_bo_is_reserved(bo));
+	lockdep_assert_held(&bo->tbo.resv->lock.base);
+
 	if (tiling_flags)
 		*tiling_flags = bo->tiling_flags;
 	if (pitch)
@@ -536,7 +537,8 @@
 int radeon_bo_check_tiling(struct radeon_bo *bo, bool has_moved,
 				bool force_drop)
 {
-	BUG_ON(!radeon_bo_is_reserved(bo) && !force_drop);
+	if (!force_drop)
+		lockdep_assert_held(&bo->tbo.resv->lock.base);
 
 	if (!(bo->tiling_flags & RADEON_TILING_SURFACE))
 		return 0;