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| author | Doug Ledford <dledford@redhat.com> | 2017-08-18 20:12:04 +0200 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2017-08-18 20:12:04 +0200 |
| commit | b0e32e20e3c63778d8c20a40d8bec8b18baffecb (patch) | |
| tree | 2e0c3311c53889473b94d49132fe5b7cdee71d51 /drivers/infiniband/hw/vmw_pvrdma | |
| parent | Merge branch 'misc' into k.o/for-next (diff) | |
| parent | IB/uverbs: Fix NULL pointer dereference during device removal (diff) | |
| download | linux-b0e32e20e3c63778d8c20a40d8bec8b18baffecb.tar.xz linux-b0e32e20e3c63778d8c20a40d8bec8b18baffecb.zip | |
Merge branch 'k.o/for-4.13-rc' into k.o/for-next
Merging our (hopefully) final -rc pull branch into our for-next branch
because some of our pending patches won't apply cleanly without having
the -rc patches in our tree.
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/vmw_pvrdma')
| -rw-r--r-- | drivers/infiniband/hw/vmw_pvrdma/pvrdma_cq.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/vmw_pvrdma/pvrdma_cq.c b/drivers/infiniband/hw/vmw_pvrdma/pvrdma_cq.c index 69bda611d313..90aa326fd7c0 100644 --- a/drivers/infiniband/hw/vmw_pvrdma/pvrdma_cq.c +++ b/drivers/infiniband/hw/vmw_pvrdma/pvrdma_cq.c @@ -65,13 +65,28 @@ int pvrdma_req_notify_cq(struct ib_cq *ibcq, struct pvrdma_dev *dev = to_vdev(ibcq->device); struct pvrdma_cq *cq = to_vcq(ibcq); u32 val = cq->cq_handle; + unsigned long flags; + int has_data = 0; val |= (notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED ? PVRDMA_UAR_CQ_ARM_SOL : PVRDMA_UAR_CQ_ARM; + spin_lock_irqsave(&cq->cq_lock, flags); + pvrdma_write_uar_cq(dev, val); - return 0; + if (notify_flags & IB_CQ_REPORT_MISSED_EVENTS) { + unsigned int head; + + has_data = pvrdma_idx_ring_has_data(&cq->ring_state->rx, + cq->ibcq.cqe, &head); + if (unlikely(has_data == PVRDMA_INVALID_IDX)) + dev_err(&dev->pdev->dev, "CQ ring state invalid\n"); + } + + spin_unlock_irqrestore(&cq->cq_lock, flags); + + return has_data; } /** |