dma-fence: Signal all callbacks from dma_fence_release()
authorChris Wilson <chris@chris-wilson.co.uk>
Sun, 9 Jun 2019 11:00:02 +0000 (12:00 +0100)
committerChris Wilson <chris@chris-wilson.co.uk>
Sun, 9 Jun 2019 12:01:44 +0000 (13:01 +0100)
commit427231bc6d585befe09ea793776f0ba4d032c3f8
tree9c3d2de4d74d84434d8589003dc1312f5e680b76
parentaec3925f093d3ac880c53ec03ea28ef8608b0a52
dma-fence: Signal all callbacks from dma_fence_release()

This is an illegal scenario, to free the fence whilst there are pending
callbacks. Currently, we emit a WARN and then cast aside the callbacks
leaving them dangling. Alternatively, we could set an error on the fence
and then signal fence so that any dependency chains from the fence can
be tidied up, and if they care they can check for the error.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190609110002.31915-1-chris@chris-wilson.co.uk
drivers/dma-buf/dma-fence.c