Barely anyone uses dma_fence_signal()'s (and similar functions') return code. Checking it is pretty much useless anyways, because what are you going to do if a fence was already signal it? Unsignal it and signal it again? ;p
Removing the return code simplifies the API and makes it easier for me to sit on top with Rust DmaFence.
Philipp Stanner (6): dma-buf/dma-fence: Add dma_fence_test_signaled_flag() amd/amdkfd: Ignore return code of dma_fence_signal() drm/gpu/xe: Ignore dma_fenc_signal() return code dma-buf: Don't misuse dma_fence_signal() drm/ttm: Remove return check of dma_fence_signal() dma-buf/dma-fence: Remove return code of signaling-functions
drivers/dma-buf/dma-fence.c | 59 ++++++------------- drivers/dma-buf/st-dma-fence.c | 7 +-- drivers/gpu/drm/amd/amdkfd/kfd_process.c | 5 +- .../gpu/drm/ttm/tests/ttm_bo_validate_test.c | 3 +- drivers/gpu/drm/xe/xe_hw_fence.c | 5 +- include/linux/dma-fence.h | 33 ++++++++--- 6 files changed, 53 insertions(+), 59 deletions(-)