Commits
David Windsor committed e7a41b27697
dlm: check if workqueues are NULL before flushing/destroying [ Upstream commit b355516f450703c9015316e429b66a93dfff0e6f ] If the DLM lowcomms stack is shut down before any DLM traffic can be generated, flush_workqueue() and destroy_workqueue() can be called on empty send and/or recv workqueues. Insert guard conditionals to only call flush_workqueue() and destroy_workqueue() on workqueues that are not NULL. Signed-off-by: David Windsor <dwindsor@redhat.com> Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>