diff options
| author |   Bharat Potnuri <bharat@chelsio.com> | 2018-04-27 16:41:16 +0530 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2018-04-27 14:38:44 -0400 |
| commit | 2df19e19ae90d94fd8724083f161f368a2797537 (patch) | |
| tree | b2f6622d07fb37ddb5501cddd377aeacdab72c6f /drivers/infiniband/hw/cxgb4/qp.c | |
| parent | IB/uverbs: Fix kernel crash during MR deregistration flow (diff) | |
| download | linux-dev-2df19e19ae90d94fd8724083f161f368a2797537.tar.xz linux-dev-2df19e19ae90d94fd8724083f161f368a2797537.zip | |
iw_cxgb4: Atomically flush per QP HW CQEs
When a CQ is shared by multiple QPs, c4iw_flush_hw_cq() needs to acquire
corresponding QP lock before moving the CQEs into its corresponding SW
queue and accessing the SQ contents for completing a WR.
Ignore CQEs if corresponding QP is already flushed.
Cc: stable@vger.kernel.org
Signed-off-by: Potnuri Bharat Teja <bharat@chelsio.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/cxgb4/qp.c')
| -rw-r--r-- | drivers/infiniband/hw/cxgb4/qp.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c index de77b6027d69..ae167b686608 100644 --- a/drivers/infiniband/hw/cxgb4/qp.c +++ b/drivers/infiniband/hw/cxgb4/qp.c @@ -1343,12 +1343,12 @@ static void __flush_qp(struct c4iw_qp *qhp, struct c4iw_cq *rchp, qhp->wq.flushed = 1; t4_set_wq_in_error(&qhp->wq); - c4iw_flush_hw_cq(rchp); + c4iw_flush_hw_cq(rchp, qhp); c4iw_count_rcqes(&rchp->cq, &qhp->wq, &count); rq_flushed = c4iw_flush_rq(&qhp->wq, &rchp->cq, count); if (schp != rchp) - c4iw_flush_hw_cq(schp); + c4iw_flush_hw_cq(schp, qhp); sq_flushed = c4iw_flush_sq(qhp); spin_unlock(&qhp->lock); |