drm/amdkfd: fix race condition in kfd_wait_on_events
Add the waiters to the wait queue during initialization, while holding the event spinlock. Otherwise the waiter will not get activated if the event signals before being added to the wait queue. Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> Reviewed-by: Philip Yang<Philip.Yang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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