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drm/ttm: Fix spinlock imbalance

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commit a8ff3ee211 upstream.

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 <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Thomas Hellstrom
2012-06-01 15:39:11 +02:00
committed by Greg Kroah-Hartman
parent df1dadab46
commit 166ab4d1f2
1 changed files with 1 additions and 0 deletions
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drivers/gpu/drm/ttm/ttm_bo.c
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@@ -1809,6 +1809,7 @@ 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;
}