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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: Yannick Cote <yannick.cote@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Yannick Cote 2008-09-29 21:24:04 -07:00 committed by Roland Dreier
parent 9403589675
commit e441d63428
1 changed files with 7 additions and 0 deletions
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7
drivers/infiniband/hw/ipath/ipath_verbs.c
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@ -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;