[PATCH 3/3] drm/mm: WARN for unclean mm takedown

[daniel.vetter at ffwll.ch (Daniel Vetter)]

The usual drm driver has tons of different drm_mm memory managers so the drm
error message in dmesg is pretty useless. WARN instead so that we have the full
backtrace.

Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
 drivers/gpu/drm/drm_mm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c
index f9d4873..d303e31 100644
--- a/drivers/gpu/drm/drm_mm.c
+++ b/drivers/gpu/drm/drm_mm.c
@@ -699,8 +699,8 @@ void drm_mm_takedown(struct drm_mm * mm)
 {
 	struct drm_mm_node *entry, *next;
 
-	if (!list_empty(&mm->head_node.node_list)) {
-		DRM_ERROR("Memory manager not clean. Delaying takedown\n");
+	if (WARN(!list_empty(&mm->head_node.node_list),
+		 "Memory manager not clean. Delaying takedown\n")) {
 		return;
 	}
 
-- 
1.8.3.1