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path: root/drivers/infiniband/hw/cxgb4/qp.c
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Diffstat (limited to 'drivers/infiniband/hw/cxgb4/qp.c')
-rw-r--r--drivers/infiniband/hw/cxgb4/qp.c37
1 files changed, 25 insertions, 12 deletions
diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c
index 086f62f5dc9e..60cfc11a66e4 100644
--- a/drivers/infiniband/hw/cxgb4/qp.c
+++ b/drivers/infiniband/hw/cxgb4/qp.c
@@ -1066,7 +1066,7 @@ static void __flush_qp(struct c4iw_qp *qhp, struct c4iw_cq *rchp,
struct c4iw_cq *schp)
{
int count;
- int flushed;
+ int rq_flushed, sq_flushed;
unsigned long flag;
PDBG("%s qhp %p rchp %p schp %p\n", __func__, qhp, rchp, schp);
@@ -1084,27 +1084,40 @@ static void __flush_qp(struct c4iw_qp *qhp, struct c4iw_cq *rchp,
c4iw_flush_hw_cq(rchp);
c4iw_count_rcqes(&rchp->cq, &qhp->wq, &count);
- flushed = c4iw_flush_rq(&qhp->wq, &rchp->cq, count);
+ rq_flushed = c4iw_flush_rq(&qhp->wq, &rchp->cq, count);
spin_unlock(&qhp->lock);
spin_unlock_irqrestore(&rchp->lock, flag);
- if (flushed) {
- spin_lock_irqsave(&rchp->comp_handler_lock, flag);
- (*rchp->ibcq.comp_handler)(&rchp->ibcq, rchp->ibcq.cq_context);
- spin_unlock_irqrestore(&rchp->comp_handler_lock, flag);
- }
/* locking hierarchy: cq lock first, then qp lock. */
spin_lock_irqsave(&schp->lock, flag);
spin_lock(&qhp->lock);
if (schp != rchp)
c4iw_flush_hw_cq(schp);
- flushed = c4iw_flush_sq(qhp);
+ sq_flushed = c4iw_flush_sq(qhp);
spin_unlock(&qhp->lock);
spin_unlock_irqrestore(&schp->lock, flag);
- if (flushed) {
- spin_lock_irqsave(&schp->comp_handler_lock, flag);
- (*schp->ibcq.comp_handler)(&schp->ibcq, schp->ibcq.cq_context);
- spin_unlock_irqrestore(&schp->comp_handler_lock, flag);
+
+ if (schp == rchp) {
+ if (t4_clear_cq_armed(&rchp->cq) &&
+ (rq_flushed || sq_flushed)) {
+ spin_lock_irqsave(&rchp->comp_handler_lock, flag);
+ (*rchp->ibcq.comp_handler)(&rchp->ibcq,
+ rchp->ibcq.cq_context);
+ spin_unlock_irqrestore(&rchp->comp_handler_lock, flag);
+ }
+ } else {
+ if (t4_clear_cq_armed(&rchp->cq) && rq_flushed) {
+ spin_lock_irqsave(&rchp->comp_handler_lock, flag);
+ (*rchp->ibcq.comp_handler)(&rchp->ibcq,
+ rchp->ibcq.cq_context);
+ spin_unlock_irqrestore(&rchp->comp_handler_lock, flag);
+ }
+ if (t4_clear_cq_armed(&schp->cq) && sq_flushed) {
+ spin_lock_irqsave(&schp->comp_handler_lock, flag);
+ (*schp->ibcq.comp_handler)(&schp->ibcq,
+ schp->ibcq.cq_context);
+ spin_unlock_irqrestore(&schp->comp_handler_lock, flag);
+ }
}
}