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[2/2] drm/ttm: Don't unreserve swapped BOs that were previously reserved

Message ID 1516294577-29078-2-git-send-email-Felix.Kuehling@amd.com (mailing list archive)
State New, archived
Headers show

Commit Message

Felix Kuehling Jan. 18, 2018, 4:56 p.m. UTC 
If ttm_bo_swapout doesn't own the lock, don't release it. Someone
else probably depends on it still being locked.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
---
 drivers/gpu/drm/ttm/ttm_bo.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
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Patch

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 62518b6..893003f 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -1780,8 +1780,8 @@  int ttm_bo_swapout(struct ttm_bo_global *glob, struct ttm_operation_ctx *ctx)
 	 * Unreserve without putting on LRU to avoid swapping out an
 	 * already swapped buffer.
 	 */
-
-	reservation_object_unlock(bo->resv);
+	if (locked)
+		reservation_object_unlock(bo->resv);
 	kref_put(&bo->list_kref, ttm_bo_release_list);
 	return ret;
 }