[PATCH] drm/amdgpu: Fix stub fence refcount underflow

[Felix Kuehling]

Don't drop the stub fence reference after installing it as a replacement
for the eviction fence. dma_resv_replace_fences doesn't take another
reference to the fence, so it takes ownership of the reference passed
in by us.

Fixes: 548e7432dc2d ("dma-buf: add dma_resv_replace_fences v2")
CC: Christian König <christian.koenig at amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index 87a3a3ae9448..a6c7dcd8c345 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -294,7 +294,6 @@ static int amdgpu_amdkfd_remove_eviction_fence(struct amdgpu_bo *bo,
 	replacement = dma_fence_get_stub();
 	dma_resv_replace_fences(bo->tbo.base.resv, ef->base.context,
 				replacement, DMA_RESV_USAGE_READ);
-	dma_fence_put(replacement);
 	return 0;
 }
 
-- 
2.32.0