86f8b32d085a dma-buf/dma-fence: Remove return code of signaling-functions
a6dd56e7d358 drm/ttm: Remove return check of dma_fence_signal()
165e06ec09fd dma-buf: Don't misuse dma_fence_signal()
6cc5cce0e155 drm/gpu/xe: Ignore dma_fenc_signal() return code
11cece24b271 amd/amdkfd: Ignore return code of dma_fence_signal()
e18d6f299595 dma-buf/dma-fence: Add dma_fence_test_signaled_flag()