[PATCH] ttm/pool: Don't leak LRU list on shutdown

[Ian Forbes <ian.forbes@broadcom.com>]

TTM pool was changed from a regular list to an lru list in the
referenced fixes commit. list_lru_init allocates state and it needs to
be freed unlike a simple list.

Found using the igt@core_hotunplug and kmemleak.

Fixes: 444e2a19d7fd ("ttm/pool: port to list_lru. (v2)")
Signed-off-by: Ian Forbes <ian.forbes@broadcom.com>
---
 drivers/gpu/drm/ttm/ttm_pool.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/ttm/ttm_pool.c b/drivers/gpu/drm/ttm/ttm_pool.c
index 26a3689e5fd9..a41addbf3ddf 100644
--- a/drivers/gpu/drm/ttm/ttm_pool.c
+++ b/drivers/gpu/drm/ttm/ttm_pool.c
@@ -395,6 +395,7 @@ static void ttm_pool_type_fini(struct ttm_pool_type *pt)
 
 	list_lru_walk(&pt->pages, pool_move_to_dispose_list, &dispose, LONG_MAX);
 	ttm_pool_dispose_list(pt, &dispose);
+	list_lru_destroy(&pt->pages);
 }
 
 /* Return the pool_type to use for the given caching and order */
-- 
2.54.0