From c4c3f279cd8e9cc1d3e2f364a27beadb2e69cda8 Mon Sep 17 00:00:00 2001 From: Don Wood Date: Sat, 5 Sep 2009 20:36:36 -0700 Subject: [PATCH] RDMA/nes: Update refcnt during disconnect During termination, it is possible for the refcnt to go to zero while the worker thread is posting events upward. This fix increments the refcnt before the request is passed to the worker thread. The thread decrements the refcnt when the request is completed. Signed-off-by: Don Wood Signed-off-by: Roland Dreier --- drivers/infiniband/hw/nes/nes_cm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/infiniband/hw/nes/nes_cm.c b/drivers/infiniband/hw/nes/nes_cm.c index 114b802771ad..fe08eb57c99f 100644 --- a/drivers/infiniband/hw/nes/nes_cm.c +++ b/drivers/infiniband/hw/nes/nes_cm.c @@ -2456,6 +2456,7 @@ int nes_cm_disconn(struct nes_qp *nesqp) if (nesqp->disconn_pending == 0) { nesqp->disconn_pending++; spin_unlock_irqrestore(&nesqp->lock, flags); + nes_add_ref(&nesqp->ibqp); /* init our disconnect work element, to */ INIT_WORK(&nesqp->disconn_work, nes_disconnect_worker); @@ -2477,6 +2478,7 @@ static void nes_disconnect_worker(struct work_struct *work) nes_debug(NES_DBG_CM, "processing AEQE id 0x%04X for QP%u.\n", nesqp->last_aeq, nesqp->hwqp.qp_id); nes_cm_disconn_true(nesqp); + nes_rem_ref(&nesqp->ibqp); }