Fence signaling must be enabled to make sure that the dma_fence_is_signaled() and dma_fence_is_signaled_locked() function ever returns true. Since drivers and implementations sometimes mess this up, this ensures correct behaviour when DEBUG_WW_MUTEX_SLOWPATH is used during debugging. This should make any implementation bugs resulting in not signaled fences much more obvious. Arvind Yadav (3): [PATCH 1/3] dma-buf: Remove the signaled bit status check [PATCH 2/3] dma-buf: Enable signaling on fence for sw_sync [PATCH 3/3] dma-buf: Check status of enable-signaling bit on debug drivers/dma-buf/dma-fence.c | 5 ----- drivers/dma-buf/sw_sync.c | 2 ++ include/linux/dma-fence.h | 5 +++++ 3 files changed, 7 insertions(+), 5 deletions(-) -- 2.25.1
