From: Dave Airlie <[email protected]>

Later attempts to refault the bo won't happen and the whole
GPU does to lunch. I think Christian's refactoring of this
code out to the driver broke this not very well tested path.

Fixes: 141b15e59175 ("drm/nouveau: move io_reserve_lru handling into the driver 
v5")
Cc: Christian König <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
---
 drivers/gpu/drm/nouveau/nouveau_bo.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c 
b/drivers/gpu/drm/nouveau/nouveau_bo.c
index c6c544d7c911..a4e8f625fce6 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -1271,6 +1271,8 @@ nouveau_ttm_io_mem_reserve(struct ttm_device *bdev, 
struct ttm_resource *reg)
                        drm_vma_node_unmap(&nvbo->bo.base.vma_node,
                                           bdev->dev_mapping);
                        nouveau_ttm_io_mem_free_locked(drm, nvbo->bo.resource);
+                       nvbo->bo.resource->bus.offset = 0;
+                       nvbo->bo.resource->bus.addr = NULL;
                        goto retry;
                }
 
-- 
2.43.2

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