Commit 86f46aba authored Mar 08, 2017 by Sagi Grimberg Committed by Doug Ledford Mar 24, 2017

IB/core: Protect against self-requeue of a cq work item



We need to make sure that the cq work item does not
run when we are destroying the cq. Unlike flush_work,
cancel_work_sync protects against self-requeue of the
work item (which we can do in ib_cq_poll_work).

Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com&gt;-->
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

parent 871a8623

drivers/infiniband/core/cq.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -196,7 +196,7 @@ void ib_free_cq(struct ib_cq *cq)
		irq_poll_disable(&cq->iop);
		break;
		case IB_POLL_WORKQUEUE:
		flush_work(&cq->work);
		cancel_work_sync(&cq->work);
		break;
		default:
		WARN_ON_ONCE(1);