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Commit e441d634 authored by Yannick Cote's avatar Yannick Cote Committed by Roland Dreier
Browse files

IB/ipath: Fix hang on module unload 

Handle the case where posting a send is requested when the link is
down.  This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=1117

>.

Signed-off-by: default avatarYannick Cote <yannick.cote@qlogic.com>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent 94035896

drivers/infiniband/hw/ipath/ipath_verbs.c

+7 −0
Original line number Diff line number Diff line
@@ -340,9 +340,16 @@ static int ipath_post_one_send(struct ipath_qp *qp, struct ib_send_wr *wr) 
	int acc;

	int ret;

	unsigned long flags;

	struct ipath_devdata *dd = to_idev(qp->ibqp.device)->dd;



	spin_lock_irqsave(&qp->s_lock, flags);



	if (qp->ibqp.qp_type != IB_QPT_SMI &&

	    !(dd->ipath_flags & IPATH_LINKACTIVE)) {

		ret = -ENETDOWN;

		goto bail;

	}



	/* Check that state is OK to post send. */

	if (unlikely(!(ib_ipath_state_ops[qp->state] & IPATH_POST_SEND_OK)))

		goto bail_inval;