From a8ff3ee211fccf708e1911bbc096625453ebf759 Mon Sep 17 00:00:00 2001 From: Thomas Hellstrom Date: Fri, 1 Jun 2012 15:39:11 +0200 Subject: [PATCH] drm/ttm: Fix spinlock imbalance This imbalance may cause hangs when TTM is trying to swap out a buffer that is already on the delayed delete list. Signed-off-by: Thomas Hellstrom Reviewed-by: Jakob Bornecrantz Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie --- drivers/gpu/drm/ttm/ttm_bo.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index 36792bd..b67cfca 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -1834,6 +1834,7 @@ static int ttm_bo_swapout(struct ttm_mem_shrink *shrink) spin_unlock(&glob->lru_lock); (void) ttm_bo_cleanup_refs(bo, false, false, false); kref_put(&bo->list_kref, ttm_bo_release_list); + spin_lock(&glob->lru_lock); continue; } -- 2.7.4