[PATCH] drm/ttm: fixup ttm_bo_add_move_fence

[Christian König]

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 at amd.com>
> Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
> Signed-off-by: Matthew Auld <matthew.auld at intel.com>

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 at amd.com>

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;
>   }
>