[PATCH 0/6] dma-fence: Remove return code of dma_fence_signal() et al.

Philipp Stanner
2025-11-26T13:20:01Z

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(-)

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2.49.0