Re: [PATCH] drm/ttm: fixup ttm_bo_add_move_fence

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Am 13.04.22 um 10:21 schrieb Matthew Auld:
It looks like we still need to call dma_fence_put() on the man->move,
otherwise we just end up leaking it, leading to fireworks later.

Closes: https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgitlab.freedesktop.org%2Fdrm%2Fintel%2F-%2Fissues%2F5689&data=04%7C01%7Cchristian.koenig%40amd.com%7C2c316b01285b4deacfda08da1d26a778%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637854349105267939%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=bWuQuQm6N5Lf183uo%2BsEw%2FxMWQFYVkyfYnB6SH61fto%3D&reserved=0
Fixes: 8bb31587820a ("drm/ttm: remove bo->moving")
Cc: Christian König <christian.koenig@xxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
Signed-off-by: Matthew Auld <matthew.auld@xxxxxxxxx>

Ah, yes! Previously we added the fence reference to bo->moving. I was already searching for that one as well.

Reviewed-by: Christian König <christian.koenig@xxxxxxx>

Going to push it to drm-misc-next in a minute.

Thanks,
Christian.

---
  drivers/gpu/drm/ttm/ttm_bo.c | 2 ++
  1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 015a94f766de..b15b77e10383 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -744,6 +744,8 @@ static int ttm_bo_add_move_fence(struct ttm_buffer_object *bo,
  		dma_fence_put(fence);
  		return ret;
  	}
+
+	dma_fence_put(fence);
  	return 0;
  }




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